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PLEASANT HARBOR MARINA & GOLF RESORT
WASTEWATER RECLAMATION PLANT (WRP)APR012.3
PROCESS DESCRIPTION
1.0 DESCRIPTION OF RECOMMENDED WRP & SEWER & STORMWATER
PUMPING STATIONS
This section covers a description of the recommended Wastewater Reclamation Plant (WRP)
processes and brief coverage of operating the processes, for operation of a membrane extended
aeration activated sludge process, the membrane ultra-filtration system, the disinfection system
and the instrumentation and control systems for meeting the requirements of State of
Washington Class A Reclaimed Water. Each process in the plant is planned to have 100%
backup with the largest unit out of service. There will be a single "point of compliance" for
meeting all Class A Reclaimed Water requirements, at the end of the chlorine contract
chamber.
The WRP design criteria are shown in Table A. The Preliminary Site Plan, Sl, is attached.
TABLE A _ WASTEWATER RECLAMATION PLANT DESIGN DATA
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Design Flows & Loadings
FLOWS, million gallons per day (mgd)
Annual Average
Winter Average (Nov thru Mar)
Mid Season Average (Apr, May, Oct)
High Season Average (Jun thru Sept)
Max Monthly Average
Max Week Average
Max 3-day weekend average
Equalized maximum week flow*
Peak hour, hydraulic
LOADING, pounds per day (lbs/day)
D & rss
- $ill:X,9.:i:'&ov thru Mar)
- Mid season average (Apr, May, Oct)
- High season average (Jun thru Sept)
- Max month average
- Max week equalized average
- Max 3-day weekend
Total Nitrogen - max monthly average
Desisn Year
0.12 mgd
0.07 mgd
0.11 mgd
0.18 mgd
0.21 mgd
0.22 mgd
0.23 mgd
0.21 mgd *
350 gpm
300lbs/day
175 lbs/day
275lbslday
450lbs/day
530lbs/day
630lbs/day
760lbs/day
90lbs/day
* Based upon 70,000 gallon basin for flow equalization- flow paced pumping to Anoxic
Basins; used for sizing membrane capaciW.
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Table A, continued
EFFLUENT REQUIREMENTS - Class A Reclaimed Water
BOD and TSS
Total Nitrogen
Total Coliform
Turbidity
Median No. in last 7 days
2.21100 rnL
Average Monthly
0.2 NTU
Monthly Average Goals
5 mglL* - not permit, but needed to meet turbidity & coliform
10 mg/L**
Any Sample
231100 mL
0.5 NTU
* BOD and TSS permitted limits are higher than shown, but must approximately be as listed to
meet turbidity and total coliform limits.
** Municipal wastewater that meets the requirements of Water Reclamation and Reuse
Standards, issued jointly by Washington Departments of Health and Ecology in September
1997, for Class A reclaimed water, is acceptable for percolation to groundwater, provided it
meets all known and reasonable technology. All known and reasonable technology has been
interpreted by WDOE as meeting total nitrogen of less than l0 mg/L monthly averages.
1.1 RECOMMENDED PUMPING FACILITIES FOR PLEASANT HARBOR MARINA
& GOLF COURSE SERVICE AREAS
A Marina area and condos up the road to the South will be served by several E-1
grinder pump stations. These stations are single phase, 110 volt grinder pumps
(electrical from building power). Each station has emergency storage for storing
wastewater during power outages and each will have alarm transmission through
buried line (buried with 3-inch diameter force main) to the treatment plant
monitoring and alarm system. For and area with flows this small, the E-1 grinder
with storage in each is a much more cost effective solution than collection
sewers, pump station with odor control and standby generator and the same
force main to the wastewater treatment plant.
B.Black Point Road Entrance Condos (North of Hole 3) will be served by several
E-l grinder pump statioins, same as for the Marina. This force main will
discharge to the gravity sewer for Terrace I which will be served by gravity
sewer to the WRP.
C.Halfuay House Sewer Pump Station (HWPS) and Hole 10 Stormwater Pump
Station (Hl0PS):
I HWPS will be a duplex pump, on/off pump station 120 gpm at 90 feet
TDH, 15 HP submersible pumps (one is standby). This pump station will
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at the West side of the parking lot for the Halfway House at about station
28+50 on the street and North of tee for Hole 10. The force main from
HWPS will be approximately 4,500If and discharge into the gravity
sewer manhole (gravity to the WRP) at street station 8+60, west of the
dog leg on Hole 18 (hole station 6+20). This station could also be located
in the opening between condos at street station 22+50, but this location
will present problems with the generator/electrical bldg location as per b.
The alarms and telemetry and electrical / generator building will be
common for both the HWPS and HIOPS and will be located near the
parking lot for the Halfway House Restaurant.
H10PS stormwater pump station will be 4 - 2,000 gpm, 40 HP pumps
(one standby) vertical turbine pumps (the motors and discharge piping
will be visible on top of the wet well) for pumping stormwater up to the
Stormwater Pond East of Hole 8 tee. The pump station will be located
near the parking lot for the Halfiray House Restaurant. The sizing for
this pump station is based upon the assumption the directionally drilled
30-inch stormwater pipe from this stormwater pond to the South Kettle is
acceptable.
Storm Water Pump Station (SWPS) will have 4 vertical turbine pumps (1
standby) to pump stormwater from the golf course Hole 10 stormwater
storage pond (HDPE lined). Pumps will be vertical turbine for high head
pumping.
RECOMMENDED WASTEWATER RECLAMATION PLANT PROCESS FLOW
TRAIN
A. HEADWORKS BUILDING
The headworks equipment is enclosed in a building to protect the equipment
against vandalism and theft and to contain, ventilate and scrub odors through a
self contained odor scrubber / ventilation fan system. The room with the
equipment will be classified as Class 1, Div l, explosion proof.
In-Channel Fine Screens
Flow from the force main from the Pump Stations will be discharged into a
channel, which will split into two channels, each with an In-Channel Fine
Screen with 2mm openings. 2mm openings will remove all non-degradable
solids and grit from the system. Organics removed by the screen will be washed
back into the treatment train with sprays. Each screen will have a capacity to
treat peak flows (100% standby capacity). The fine screen in operation
(operator selected) is turned on when the level upstream of the screen (measured
with an ultrasonic depth transducer) reaches an operator set level and turns off
after an operator set time period of operation. When the screen turns on the
control panel (located in the Electrical Room, an unclassified area) opens the
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solenoid valve for the screen in operation to operate the screenings washer spray
nozzles and turns the screen on. Wash water is supplied by the plant utility
water (UW) system from the treated effluent manhole.
Influent Flow Measurement
Flow measurement will be with a 3-inch throat Parshall flume and ultrasonic
depth meter and transmitter. Transmitter is mounted in the Electrical Room,
which is sealed from the Class 1, Division I area in the rest of the Headworks
Building. The Parshall flume measures flow and as the flow increases, the depth
is increased proportionately into the downstream side of the ftne screen,
providing effi cient screen operation.
Influent Sampling
The influent sampler will be a refrigerated, composite sampler (all samples go
into the same container). The sampler is flow paced from FE4l0, taking a
sample after each increment of total flow (operator adjusted) is recorded on the
flow meter or can be programmed to take a sample after an operator set amount
of time has elapsed.
B. EQUALIZATION BASIN
All screened effluent from the Headworks Building will flow into the
Equalization (EQ) Basin. The EQ basin will have ultrasonic depth/level
indicator, with signal to plant control PLC and two discharge pumps (one is
standby) and a magnetic flow meter to monitor the flow to the extended aeration
activated sludge process flow stream. Aeration air from the blower that also
provides aeration air to the digester system, will supply air to the EQ basin
diffuser system to keep the contents aerobic and mixed. The PLC will control
pump speed /flow rate to provide a calculated uniform flow rate to the process
throughout the 24-hour day.
C. ANOXTC BASINS
The Anoxic Basins well be set up to operate in series, with the ability to take
either basin offline for cleaning or during low plant flows. Under normal
operation the first basin will be the lead basin. The flow from the EQ discharge
pump will be combined with the mixed liquor recirculation (from the overflow
in the membrane basins) to the first basin.
Mixers, one in each basin, will keep the basin contents well mixed. A manually
operated telescoping valve scum skimmer will be installed in each basin. The
scum will flow through glass lined pipe to a common Scum Manhole (with the
aeration basin scum skimmer discharge). Level controls in the Scum Manhole
actuate the scum pump located inside of the Process Building. The scum will be
pumped through a flow meter to the primary sludge digester basin.
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Either Anoxic Basin will be able to be drained through a mud valve to the in-
plant drain pump station covered below.
D. AERATION BASIN FLOW DISTRIBUTION BOX
All flow from the Anoxic Basins will go to an aeration basin flow distribution
box (flow D box), which will split the flow evenly to each aeration basins (AB)
in service.
E. AERATTON BASINS
The AB's will operate in parallel following the flow D box. Each basin will be
equipped with tubular, fine bubble diffusers and submersible mixers. Each AB
has a designated blower with variable frequency drive that aerates the mixed
liquor suspended solids (mlss) in the basin.
A dissolved oxygen (DO) monitoring system proposed for each AB, measures
and controls the DO to operator adjustable concentration to optimize the
activated sludge process, by controlling blower output through a vfd on each
blower. When the DO level lowers in the basin, blowers will be speeded up to
put out more air, and when the DO level rises toward the upper set point, the
blowers slow down. When the DO reaches the set point, the blowers will shut
down and the mixers will come on, insuring that anoxic conditions are
maintained in the mixed liquor being re-circulated back to the Anoxic Basins for
nitrogen reduction & pH control.
Scum skimmers in each basin are proposed to be manually operated as covered
under Anoxic Basins, above. The basin will be drained through mud-valves to
the in-plant drain pump station covered below. Three sound attenuated blowers
are proposed to provide aeration air for the two aeration basins. Each basin will
also be equipped with a mixer as part of the control system to control DO within
the basins.
F. MEMBRANE ULTRAFILTRATION BASINS
Four (4) membrane basins are proposed to provide ultra-filtration of the mlss
from the Aeration Basins. Each membrane basin will have a filtration capacity
of 70,000 gallons per day (gpd) for a total average flow capacity of 280,000 gpd.
Therefore, at maximum monthly average design one basin will act as a standby
basin. In the event that permeate turbidity (effluent from each of the membrane
basins is monitored continuously on a turbidimeter) goes above an operator set
level (which will be above the out-of-compliance limit of 0.5 NTU, usually
about 0.3 NTU), the influent valve to the standby basin opens, the standby basin
goes on line; and the motor operated influent valve to the basin with the high
turbidity closes and the tank goes off line, an alarm sounds to alert the operator.
Each basin has a flow meter on the influent along with the motor operated valve,
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an overflow to the mixed liquor recirculation (MLR) pump station wet well, an
aeration system, and a discharge to a skid mounted equipment for controlling the
membrane system in each basin.
Each skid is equipped with a blower which feeds air below the membranes in a
pulsing action to clean the membranes, perneate pump, turbidity meter, and
control panel which will be tied into the plant control and monitoring system
PLC. The mlss in the membrane basins will overflow into a pipeline to the
MLR pump station for recirculation to back to the Anoxic Basin. Water that has
been filtered through the ultrafiltration membranes is called the permeate. The
permeate will be pumped by the skid mounted permeate pump to the under-floor
permeate pipelie to the hypochlorite disinfection system and chlorine contact
tank. The permeate pump is also used to back-flush the membranes with filtered
water stored on the top of the membrane basins.
The Owner previously selected the Zenon membrane system as described in the
FETS.
G MIXED LIQUOR RECIRCULATION AND WASTE SLUDGE PUMP
STATION
The MLR Pump Station will contain two submersible MLR pumps, with the
disconnect elbows and piping, and one submersible waste sludge (WAS) pump
(with an on shelf standby pump). The MLR pumps flow rate will be manually
controlled through variable frequency drives (vfd) and level controlled on/off for
high and low levels in the wet well. MLR and WAS flows will each be
monitored by magnetic flow meters. The waste sludge will be pumped to the
Primary Sludge Digester Basin on a time of day on and total flow pumped per
cycle (adjustable by the operator) off.
H. HYPOCHLORITE DISINFECTION SYSTEM
Liquid hypochlorite (12.5% concentration) is proposed for disinfection to meet
Class A Reclaimed Water Requirements. The Department of Health requires a
chlorine residual in the force main to the point of storage, and therefore
hypochlorite is recommended for the disinfection as well. Hypochlorite will be
delivered in bulk and stored in two storage tanks located within a spill
containment room in the Process Building that will be sealed from the rest of the
building due to the corrosive nature of hypochlorite.
Hypochlorite will be pumped at arate proportional to the total permeate flow
and will be further diluted with utility water before injection into the corlmon
permeate pipeline (leading from all of the membrane systems). A full standby
backup system will be provided in the event of loss of hypochlorite flow from
the first system (indicated by falling residual chlorine). The hypochlorite
solution will be injected into the common permeate pipe for complete mixing
before entering the chlorine contact chamber. The chlorine contact chamber will
provide adequate detention time to insure the total coliform kill required. A
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chlorine residual analyzer will monitor residual at the end of the contact
chamber to insure effluent compliance. An alarm and automatic switchover to
the backup system will occur if the hypochlorite residual starts to fall below the
out-of-compliance concentration.
I. POINT OF COMPLIANCE
The point-of-compliance where effluent from the plant will be established as
meeting the requirements for Class A Reclaimed Water (see Table A, above) is
proposed to be at the end of the chlorine contact basin. Two turbidity analyzers
(one is redundant) and chlorine residual analyzer (with on-shelf standby) will be
panel mounted and effluent will be continuously pumped to the analyzers for
continuous monitoring.
A flow paced refrigerated composite sampler will sample the effluent for
laboratory testing. The flow signal for pacing the sampler will come from the
EQ basin pump discharge to the activated sludge process flow stream.
J. RW EFFLUENT PUMP STATION WITH UTILITY WATER (UW) PUMP
The effluent pump station will consist of two vertical turbine pumps each
capable of pumping 100% of the reclaimed water (R!V) produced by the plant,
and a magnetic flow meter that will measure all of the flow to the storage
reservoir.
UW pump will feed water to the utility water system for in-channel fine screens
sprays, in-basin sprays, hose-down water, centrifuge cleaning water, etc. and
will be a vertical turbine pump.
K. IN-PLANT DRAIN PUMP STATION (IPPS)
The [PPS, as mentioned above, allows for drainage for each of the Anoxic
Basins, Aeration Basins and Membrane Basins and drains located inside the
Process Building (floor drains, lavatory, lunch room and laboratory) and
discharges to the Headworks Building. The pump station operates on float level
controls from a duplex alternating control panel. The pump station has two
submersible pumps with one acting as standby.
L. SLUDGE DIGESTER BASINS
With any of the sludge to biosolids (treated sludge is referred to as biosolids)
alternative processes, the first requirement is storage and then stabilization and
"disposal"; preferably a beneficial use. Storage and stabilization can, at a
minimum, provide sufficient stabilization to produce biosolids that meet the
requirements for Class B (see below). Alternative biosolids disposal are
developed and evaluated in 1.2 below.
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The recommended initial biosolids treatment will include two sludge digester
basins, a primary and secondary, for digestion of the sludge to meet State of
Washington requirements for Class B biosolids (suitable for liquid application to
agricultural or forest land with restricted public access or hauling to a licensed
facility for further treatment and disposal).
One (1) Blower (standby blower for aeration basins will also serve as standby
for digester blower) will provide aeration and mixing for the Primary and
Secondary Digester Basins (and also will provide aeration air for mixing and
aeration of the EQ basin). The blower has a manually controlled speed through
a variable frequency drive to meet the mixing and aeration needs of the three
basins.
M. SUPPORT FACILITIES
The Process Building will include: l) four (4) membrane equipment skids for
each Membrane Basin; 2) Blower room with all four (4) blowers; 3) Scum
pump; 4) centrifuge dewatering room; 5) electrical room with Motor Control
Centers, Instrumentation, Control and alarm instrumentation and control system
with PLC and operator's computer for monitoring, alarms and control of the
plant; 6) a full laboratory, crew lunch room and lavatory; 7) hypochlorite room
for storage and feed systems; and 8) a shop area for maintenance and repair of
equipment.
The plant will have a standby generator and automatic transfer switch for full
operation of the plant in the event of power failure.
1.3 SLUDGE HANDLING ALTERNATIVES
A Class A Biosolids - Dewatering and Haul to Permitted Sludge Handling Facility
Sludge is proposed to be pumped from the secondary digester basin through a
positive displacement sludge feed pump which has a manually controlled vfd to
control sludge feed rate to the Centrifuge. Sludge flow rate is measured by 2-
inch magnetic flow meter. Sludge will be prepared for dewatering in the
centrifuge with polymer addition from a polymer feed system to condition the
sludge for dewatering. Dewatered sludge will be carried to a sludge truck or
container with a sludge auger conveyor.
This alternative is dependant upon receiving approval from the City of Shelton
for hauling dewatered biosolids to their drying facility, which is scheduled to be
in service in late 2010.
B. Liquid Haul of Class B Biosolids for Forest or Farmland Application Sites
The aerobic digestion facility proposed above will produce biosolids that will
meet the State of Washington requirements for Class B biosolids.
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Altematives for land application of biosolids include thickening to reduce the
number of truckloads hauled and applied, purchase and application of biosolids
by the owner or contract haul and disposal. Other issues include finding forest
or agricultural land and obtaining permits for biosolids land application on the
parcels of land.
C Further investigation and inquiry will be required before making a
recommendation for final biosolids disposal. Space will be left in the planning
of the WRP to accommodate either of the above alternatives or a third
alternative, if one arises.
2.0 DESIGN CRITERIA AND DATA
The detailed design criteria and data for the recommended wastewater reclamation plant
(showing the alternative biosolids handling using dewatering and haul to an off-site permitted
biosolids handling facility) is shown on Table B.
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TABLE B _ RECOMMENDED WASTEWATER RECLAMATION PLANT
DESIGN CRITERIA & DATA Build-Out
HEADWORKS
Influent In-Channel Fine Screens, no. 2
Capacity, each 0.6 mgd
Type ofscreen in-channel fine screen
Screen opening 2 mm
Influent flow measurement, type ultrasonic
downstream of fine screens, 24" side walls 3" Parshall flume
Influent sampling, refrigerated flow paced composite sampler
Odor Scubber, type package blower & activated carbon canister
Blower motor 2hp
ACTIVATED SLUDGE _ NUTRIENT REMOVAL TREATMENT
Equalization Basin, no. I
Equalization volume, each (equalize 4+ hours of peak flow) 70,000 gallons
Basins (Side water depth, maximum) 32' x24' inside x 12' swd, 14' walls
Diffirsers, capacity for mixing and aeration 150 scfrn
aeration required for mixing 100 scfrn
EQ to Anoxic Basin submersible pumps, no. (l is standby) 2
capacity, each (vfd flow control, PLC control) 170 gallons/minute
motor, each 5 HP
Anoxic Basins (AnB), no. 2 basins
Flow from EQ Bains
volume, each, operate in series 46,000 gallons
Basins (Side water depth at max mon avg flow) 32' x 16' inside x 12' swd, 14' walls
Side water depth at max day flow (peak flow) 12 feet
Mixers, high speed floating, total no. 2
Motor 3 horsepower
Detention nme @ max mon avg + 4 x mlss recirculation
(mma: 0.21+ 0.84 mgd): 1.05 mgd 2.1 hours
Aeration Basins (AB), no. 2
Pre-Aeration Basins, volume, each, operate in parallel 52,000 gallons
MCRT, minimum 20 days
Basins (Side water depth at max mon avg flow) 32' x 18' inside x 12' swd, 14' walls
Detention time, theoretical, max monthly average flow 12 hours
Mixers, submersible, one per basin 2hp
Aeration blowers, no. (one standby) 3
capacity, each, variable frequency drive DO control 300 scfm
operating pressure 7.0 psig
motors, each 20 horsepower
aeration blower control (on vfd's) DO probes/control system
Aeration, type EPDM fine bubble diffusers
aeration sizing for diffi.rsers 400 scfm
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Table continued - DESIGN CRITERIA - DATA
Membrane Aeration Basins (MAB), no. (1 is standby for N+l) 4
Volume, each 7,000 gal
total volume in operation at design flow 21,000 gal
Turbidity analyzers, total, continuous effluent monitoring I / permeate pump
Effluent (permeate) Flow meters I / permeate pump
Theoretical detention time (total aerated volume, AB + MAB, without MLSS recirculation)
at annual average (0.12 mgd) 25 hours
at max monthly average (0.21 mgd) 14 hours
Mixed Liquor (MLSS) Recirculation (MLR) pump station, pumps 2
Recycle to Anoxic Basin flow rate at 4Q, max mon avg 0.84 mgd
Pump capacity, each, one is standby 600 gpm
motor l0 hp
Magnetic flow meters, 4 inch, number I
Waste Sludge Pumps, no. (+ I uninstalled standby), in MLR wetwell I
Capacity, each 80 gpm
Motor 3 horsepower
Flow control type time on, total flow off
Magnetic flow meters,2 inch, no. I
Scum Pump, positive displacement, no. (+1 uninstalled standby) I
Capacity 40 gpm
Motor 3 horsepower
Control manual or level on and level off
EFFLUENT DISINFECTION
Disinfection for Class A Reclaimed Water requirements, type
Liquid feed systems, no
Chlorine concentration achieved, minimum
Chlorine Contact Chamber volume
Detention time at max week flow & peak flow
Effluent residual analyzers, no.
Effluent turbidity meters, no.
hypochlorite
2
10 mg/L
9,000 gallons
60 minutes
2
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REUSE WATER SUMP/PUMPS TO REUSE STORAGE RESERVOIR
Effluent Reuse Pumps, no (l is standby) 2Capacity 200 gpmMotor 20hp
Effluent flow measurement, type 6" mag meter
Utility Water Pumps, no. (+l on shelf standby) 1Capacity 100 gpmMotor 7.5hp
System components pressure tank, pressure switchOperation pump on at 85 psig and off at 105 psig
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Table continued - DESIGN CRITERIA - DATA
SLUDGE AERATED DIGESTER BASINS, no. 2
Volume of digester #1 52,000 gallons
Basins (Side water depth) 32' x 18' inside x 12' swd, 14' walls
Volume of digester #2 46,000 gallons
Basins (Side water depth) 32' x 16' inside x 12' swd, 14' walls
Aeration blowers, no. (AB standby is standby for this blower) I
capacity, each 300 scfm
operating pressure 7.0 psigmotors 20 horsepower
Pressure transducer for level indication 1
SLUDGE DEWATERING (if used), type centrituge
Feed rate capacity, max 30 gallons/minute dewatering
Drive motor 25 horsepower
Backdrive motor 7.5 hp
Polymer feed systems (2 feed pumps, 1 neat polymer pump), type wet polymer
Thickener feed pumps, no. (+ 1 un-installed) I
Capacity, each 80 gallon/minuteMotor 7.5 horsepower
flow control manual set vfd at BFP control panel
Magnetic flow meter 1 at 4 inches
Dewatering conveyor 2hp
DRAINAGE PUMP STATION - may be able to use with flow measurement on retum at the
valley (casino) location
Pumps, duplex alternating, no 2
capacity, each 120 gallons/minutemotor 5 horsepower
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3.2 PHASE 2
3.0 WASTEWATER RECLAMATION PLANT PHASING
Phase 1 capacity will be to treat flows up to a maximum monthly average flow
of 70,000 gallons per day (the capacity of one membrane basin). The process
components that will be constructed are:
o Headworks Building with fine screens (trvo required initially to protect
the investment in the membranes), influent flow measurement and
sampling and odor control
o Two Aeration Basins (AB) and one Sludge Digester; the first AB will be
used for influent equalization with influent eqrualization pumps installed,
and the second AB will have diffusers and mixer installed for extended
aeration activated sludge with cyclical aeration for nitrification/
denitrification in one basin.
o One membrane basin will be put info use with membrane modules
o The first half of the Operations Building will be constructed.
o The chlorination equipment (liquid hypochlorite) and one chlorine
contact basin. Chlorine solution feed will be included to insure the
system meets chlorine residual concentrations at the point of use.
. Liquid biosolids (digested sludge) will be hauled from the single digester
by septic tank pump trucks to a licensed treatment plant for disposal.
Phase 1 components of the Recommended WRP will not meet requirements for
Class A Reclaimed Water, since 100 percent backup of all processes will not at
this point be installed. Therefore, effluent during this phase will not be used for
toilet flushing or irrigation of areas that are open to public access. Effluent will
be discharged to subsurface drip irrigation for landscaping irrigation and
disposal during non-growing season, point of use irrigation (not sprinkler
application, but individual drippers) of grapes, irrigation of orchards and other
non-public contact irrigation needs (plus buffer areas, if applicable for type of
irrigation).
Phase 2 construction will increase capacity to treat a maximum monthly average
flow of 140,000 gallons per day, with process components added to meet the
requirements for Class A Reclaimed Water. The process components that will
be constructed are:
o InfluentEqualization Basin, with pumps moved from Aeration Basin.
o Aeration Basin #l will have diffusers and mixer installed to provide full
backup to AB#2. Each AB will provide extended aeration activated
sludge process with cyclical aeration for nitrificatiorV denitrification in
each basin, for the Phase 2 capacity.
o Membranes will be installed in the second membrane basin to provide
Class A Reclaimed Water capacity of 70,000 gallons per day and when
the maximum monthly average flows reach 70,000 gallons per day (gpd),
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membranes will be installed in the third membrane basin to provide
Class A Reclaimed Water capacity of 140,000 gpd. [Even though
210,000 gpd total capacity of membranes will be installed, the capacity
for Class A Reclaimed Water will be 140,000 gpd, since 100%
redundant capacity membrane process component must be available to
automatically come on line with high turbidity or out-of-compliance
storage must be provided - which will be evaluated if space is available.]
Redundant hypochlorite feed equipment and basin will be installed.
3.3 PHASE 3
3.4 PHASE 4
A.Phase 3 construction will increase capacity to treat a design year maximum
monthly average flow of 210,000 gallons per day, with process components
added to meet the requirements for Class A Reclaimed Water. The process
components that will be constructed are:
o Anoxic Basin #l and Aeration Basin flow distribution box
o Membranes will be installed in the fourth membrane basin to provide
Class A Reclaimed Water capacity of 210,000 gallons per day, when
maximum monthly after flow reaches 140,000 gallons per day.
o Last half of the Operations Building
o Centrifuge dewatering can be installed in this phase or phase 4 along
with biosolids truck loading bay
Phase 4 construction will add the remainder of the recommended wastewater
reclamation plant process components to provide additional treatment capability
and bring the operating annual costs down for biosolids disposal down. The
process components that will be constructed are:
Anoxic Basin #2 for additional nitrogen reduction, if required to prevent
algae growth in the Class A Reclaimed Water Storage Reservoir.
Centrifuge installation, if not done in Phase 3 for reducing biosolids
disposal costs.
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Electrical Equipment Load List
Attachment A
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EQUIPMENT LIST - ELECTRICAL LOADS
P LEASANT HARBOR WASTEWATER TREATM ENT PLAN N ! NG
Pleasant Harbor Wastewater Relcamation Plant - Eng Report DATE: 6112108
BY: Rick Esvelt P.E.based on RSE work
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DESCRIPTION OF LOADEQUIP. NO.NO HP FACTOR
On
Gen
FM31-H 3" Parshallflume in Headworks, dwnstrn 4-20mAto PLC, total w/FM.3
scs1-H ln-channelfine screen, 480V, 3-ph.Mnftr's control panel 1 2
GR53-H Mechanical grit chamber drive, 480V, 3-l Mnftr's control panel 1 1
1
1
1
from GR-43 panel. time on/2 5 1GR-P53-H Grit pump, 480V, 3-phase
on when pump is on 2 2 1GR54-H Grit cyclone separator / clasifier, 480V, 3
SA4B-H Sampler - refriqerated, flow proportional 4-20 mA sionalfrom FM31 3 1
VBL56-H Headworks ventilation fan manualon/off I 5 1
Area totalconnected HP 15.0
ANOXIC BASINS
M21-AB Floating Mixer #1 - Anoxic Basin #1 manual on/off 8
M22-AB Floating Mixer #2 - Anoxic Basin #2 manual on/off 8
M23-AB (F) Mixer #3 - Future Anoxic Basin #3 manual on/off F
M24-AB (F) Mixer lf4 - Future Anoxic Basin #4 manual on/off F
AERATION BASINS
M25-ARB Floating Mixer #5 - Aeration Basin #1 manual on/off 1
M26-ARB Floating Mixer #6 - Aeration Basin #2 manual on/off 1
M27-ARB (F) Mixer #7 - Future Aeration Basin #3 manual on/off F
M28-ARB (F) Mixer #8 - Future Aeration Basin #4 manual on/off F
AE101-ABR DO Monitoring/Control System - Basins ' blower vfd & on/off control 3
AE102-ABR DO Monitoring/Control System - Basins I blower vfd & on/off control 3
MIXED LIQUOR PUMP STATION - in Aeration Basins (1 in each aeration basin)
P-ML01-ARB Submersible Pump in AB #1 vfd, auto/manual control 1
P-ML02-ARB Submersible Pump in AB #2 vfd, auto/manual control 1
P-MLO3-(F) Submersible Pump in future AB #3 vfd, auto/manual control F
P-MLO4-(F) Submersible Pump in future AB # vfd, auto/manual control F
FM33-ML Mixed Liquor Recycle Mag Flow Meter signal to PLC for P-ML 3
FM34-ML (F) Mixed Liquor Recycle Mag Flow Meter signalto PLC for P-ML 3, F
ELECTRICAUBLOWER ROOM, in Operations Bldg
BL81-B Aeration basin blower
BL82-B Aeration basin standby blower
BL83-B (F) Aeration basin blower
BL84-B Sludge Holding Basin blower
ACTIVATED SLUDGE CLARIFIERS
CL01 36'dia clariifierCL02 36'dia clariifier
CL03 (F) 36'dia clariifier, future
MV61 motor valves for WAS fr clarifie auto control w/ WAS
5
5
5
5
5
5
5
5
0.5
0.5
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
7.5
7.5
7.5
7.5
0.5
0.5
0.75
0
0.75
0.5
1
,|
,|
I
1
40
40
40
20
on vfd, DO
on vfd, DO
on vfd, DO
1
1
1
control
control
control
1
0
F
2
1
1
F
automatic on/off
manualon\off
manualon\off
manualon\off
1
1
1
32
Page 'l of 3 Equip List
lotal HP anoxtc to elecvblr 213.0
Shelton-Satellite WRP
NOTELOADIDEMANDI On
I No. I HP lrncronloenEQUIP. NO.DESCRIPTION OF LOAD
Sludoe loadino flow meter 3" maq meter to PLC 3FM39
CLASS A RECLAIMED WATER FITLERS
MV 65 12" aulo 3-way valve, one outlet to each PLC divert alarm activated 16
mnfr control panel 1 10FlL91 cloth disk filter with motor operated valve 0
FlL92 cloth disk filter. exist w/15 HP backwash mnfr control panel 1 20 1
POL93,94 Two polvmer feed system (total HP oiver flow paced from FM42 1 4 0.5
M95 flocculation mixer manual on/off 8 0.5 1
AE45, AE46 turbidity analysers, notice & bypass alarr PLC/flow divert at 5 NTU 3 1
Hypochlorite Disinfection
FM42 effluent Parshallflume flow meter PLC & UV intensity paced 3
UV71 U.V. disinfection-Class A Reclaimed Wat Mnftr panel control all bank 14 see 15 1
flow oacinq sionalfrom FM42 flow divert at low UV
SA49 Sampler - refriqerated, flow proportional 4-20 mA siqnalfrom FM31 3 1
Area totalconnected HP 85
basin level transducer
mnftr control panel 11 5 0.25
control fr GBT-110 panel 11 5 0.25
control fr GBT-110 panel 11 2 0.5
control fr GBT-1 10 panel 11 1.5 0.5
signal to GBT-110 panel 3 0.5
control fr GBT-1'10 panel 11 7.5 0.5
Area totalconnected HP 24
DRAIN PUMP STATION - for tank drains, filter backwash & filtrate from thickener
7P13-DPS submersible pump lead/lag control panel 5 1
P14-DPS submersible pump, standby local control panel I 5 0
RECLAIMED WATER EFFLUENT SUMP
P16-UW vertical turbine utility water pump pressure switch control pan 13 7.5 1
P18-EFF vertical turbine effluent pump automatic.level 7 30 ,l
P1g-EFF vertical turbine effluent pump I
level siqnal from control panel transduce
automatic.level
sump levelto PLC
0
Area Connected HP 77.5
TOTAL CONNECTED 15 441.5
tn
P-RAS04
P-RASOs
P-RAS06(F)
P-WASO7
P-WASOB
P-STO9
P-SL1O
P-SC11
FM36
FM37
FM38
RAS pump
RAS pump
RAS pump for future clarifier
WAS pump
WAS pump (standby)
vfd, auto/manual control
vfd, auto/manual control
vfd, auto/manual control
auto control, w/auto valves
auto control
1
1
1
1
I
1
I
2
3
3
3
7.5
7.5
7.5
5
5
7.5
7.5
3
1
0
1
1
0
1
0
1
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
Y
N
Y
Y
Y
Sludge transfer pump, positive displacen manual fr thickener panel
Sludge truck loading pump, positive disp manualfrom GBT panel
Scum Pump, positive displacement level control
RAS flow meter
RAS flow meter
WAS flow meter
6" mag meter to PLC
6" mag meter to PLC
2"m meter to PLC
M1O-SHB
AE44-SHB
Floati Mixer #10 - S auto on/off - oppos blower 1
3
3 0.s
sl levelto PLC
Shelton-Satellite WRP Page 2 of 3 Equip List
30
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1
2
3
4
5
6
7
8I
't0
11
12
13
14
15
16
F
COMMENTS NOTES:
Equipment operates continuously on automatic controls
Equipment operates intirmitently on automatic controls
240 volt, 1 ph circuit, 20 or 30 amp breaker
3 pumps on for full flow with 1 standby, pressure transducer level control w/high/low override floatr
Plant control PLC
Manual set flow control from gravity thickener control panel
Standard duplex pump control - alternating, LEAD/LAG
Manualon-off
Pump is redundant backup to other pump(s).
Equipment is automatically controlled on timer
Gravity Belt Thickener panel will control GBT, Sludge and Polymer
Positive displacement blower, standby
Utility water control panel - controls pumps - ON/OFF based on
UV System panel includes AUTO operation of UV system(s),
and lamp life monitors, failure alarms, lnitial = 3 units + 1 stndby
etc. Failure/low intensity alarm diverts 2020 = 5 banks+1 stndbyflow. total = 20 kW future
Does NOT include lab, offices, heating.
3-way valve controls flow to FlL91 or FlL92, on hgih turbidity alarm, flow diverted to standby filter, standby starts
Future equipment
Shelton-Satellite WRP Page 3 of 3 Equip List
Mechanical Equipment List
Attachment B
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Equipment List
PLEASANT HARBOR MARINA & GOLF RESORT - Wastewater Reclamation Plant
MECHANICAL EQUIPMENT LIST HRE 6lt2l08
Equip No.description Power/HP
Headworks Bldg (in-channel fine screen room is Class 1, Div 1)
SCI l0 In channel fine screeno2 mm openings, 16" min 2.0 hp
SCl20 In channel fine screen,2 mm openings, 16" min (full standby) 2.0 hp
FV531 & FV532 solenoid valve on screen washers -controlled by screen panels I l5v
FE410 Influent flow meter on 3" Parshall flume 115 v*
SA5 10 Influent refrigerated sampler, flow paced from FL4l0 I 15 v
Bl350-fan air ventilation fan & odor scrubber 2.0 hp
No.
Anoxic Basins / EO Basin:
Equalization (EO) Basin
PzlllP2l2 EQ pumps to either Anoxic Basin (1 standby; -170 gpm) 2
PLC flow rate control for feed to extended aertion activated sludge process
AE561 EQ Basin level indicator to PLC
Anoxic Basins
MIX351/T\41X352 High speed floating mixers in each anoxic 2 3hp
Aeration Basins (AB's)
MIX36ll362 Submersible mixers
AE55llAE552 dissolvedoxygencontrolprobes/system
3hp
115 v
5hp
115 v
2
2
Hypochlorite Room. Process Building full strength hypochloite (12.5o/o) mixed with UW
CFS710 I CFS720 Chemical feed pump systems (hypochlorite), 1 is standby 2 230 volt
Flow pace feed rate positive displacement pump; panel mounted system
Membrane Equipment & Shop Room. Process Building
Z\l0l820l830l840 Zenon membranes is concrete basins (1 basin is standby)
with equipment skid and control panel in building 4
BL8l l/82ll83ll84l package blowers for skid modules (1 is standby) 4
28511852 package chemical feed systems for Zenon 2
SA520 Effluent refrigerated sampler, flow paced from FL42-x
CR730 (if used) overhead crane, electric drives (hoist truck & bridge) and hoist
P270-scum Vogelsang Scum pump (level or/off in Scum MH) 1
FE430-scum 2" mag flow meter on scum discharge to Sludge Basin
Chlorine Contact Chamber - Point of Compliance Monitoring -
P730A lP730B Sample pumps, one is on-shelf spare,Yzhp
AE740A I AE740B Chlorine Residual Analyzers, one is on-shelf spare
TA750A / TA750B Turbidity Analyzers
Analyzers are panel mounted
page ll2
l0 hp ea
115 v
230v, lph
3hp
115 v
115 volt
115 volt
2
2
Equipment List
Reclaimed Water (RW) Wet Well
P25l-rwlP252-wv Reclaimed Water Effluent Pumps, I is standby (or/off)
Vertical turbine pumps
FE420-rw 6" mag flow meters, on effluent to reuse storage
P26l-uw Utility Water pump/pressure tank, 1 10 psi at 120 gpm
Vertical turbine pump
2
1
I
20 hp
115 v
7.5 hp
Mixed Liquor Recirculation (MLR) Wet Well
P2}l-mlrlP222-mlr MLR Recirc submersible pumps, manual set vfd, level on/off 2
FE440-mlr 4" magmeter on mixed liquor recirculation back to Anoxic
P24l-was/P242-was WAS submersible pumps (timer on, total flow off),
1 is un-installedm on-shelf standby 2
FE450-was 2" magwaste sludge flow meter
Blower Room. Process Building
BL3l0/BL320|BL330 (l standby), DO monitor system in ea aeration basin
20 hp
(DO system to vfd control, max. of 2 on at any one time)
8L340 Sludge Holding Basin blower (AB blowers standby)
GEN9l0 Emergency standby generator/auto transfer switch
7.5 hp
115 v
5hp
l15v
1 20hp
3hp
115 v
3
Sludge Dieester Basins - one primary digester and one secondary digester
MIX37I Primary digester submersible mixer
AE562 Sludge Basin level indicator in secondary digester to PLC
I
In-Plant Pump Station (IPS), plant drains
P231-ips/P232-ips duplex alternating pump station 2 5.6 HP
Dewatering/thickening Room. Process Building (non of these to be on standby generator)
CEN60I Centrifuge drives, variable speed main drive
(all below control from BFP panel), variable speed back drive
CN64l dewatered sludge screw conveyor
P620 /630-F Vogelsang sludge feed pump, on vfd, one more in future
manual control from centrifuge control panel
l0 hp
CF65l-pol polymer feed system
FE460 2" magmeter, sludge feed flow rate to centrifuge (control panel)
25hp
7.5 hp
3hp
1.5 hp
l15v
NOTES:
*
cen
cn
cf
mag
mlr
all items listed as 115 or 230 volt are I phase, 60Hz
centrifuge -rw reclaimed water
conveyor -uw Utility Water system
chemical / hypochlorite feed -was waste sludge
magnetic flow meter
mixed liquor recirculation
page 212
!
Equipment List
vfd variable frequency drive
-gr grit equipment
page 312
Preliminary Equipment Description
Attachment C
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PLEASANT HARBOR MARINA & GOLF COURSE June 1 1,2008
PRELIMINARY EQUIPMENT LIST DESCRIPTION H. R. Esvelt, P.E.
Wastewater Reclamation Plant - design criteria attached; - 100% reliabilitv standby in case of
failure of initial system
. with Owner selected (from EIS) Zenon membranes; similar to Kamiche WRP. 4 membrane modules in concrete basins, each with 70,000 gpd capacity; 3 initial, I future
within two years. One will serve as standby.
A.Influent fine screens (in Class 1 Div I room):
1. two (2) IPEC screens, each with a capacity of 400 gpm, with spare solenoid valve & wye
strainers
2. followedby 2" Parshall flume with ultrasonic depth/flow meter (transmitter/control
penals in non-classified room)
3. odor scrubber - same as Squaxin/Kamilche WRP, 2 hp fan
B.Equalization Basin - One basin - Volume 70,000 gallons, l2' swd, 32' x24'wide (14'walls),
with mixer (?) and diffrrsers - all flow will eo into the EO basin and be flow rate controlled
to Anoxic Basins by PLC.
1. diffusers - 150 scfm capacity - fine bubble tube diffusers (aeration reqrd: 100 scfrn)
2. mixer, if used - 2.1 + hp
3. vfd controlled submersible duplex pumps - 170 gpm each - see Pump summary, below
Anoxic Basins - two in series - Volume 46,000 gallons each,12'swd, 32'x l6'wide (14
walls)
l. mixers - 1.5 + hp, each basin
Aeration Basins - 2 in parrellel - Volume 52,000 gallons each,12'swd, 32'x l8'wide (14'
walls)
1. mixers - 1.6 + hp, each basin
2. diffusers capacity - 400 scfm each basin - fine bubble tube diffusers
3. DO Control System - to control blower output and offlon with mixers when loading is low
4. Sound affenuated blowers -
3 for aeration basins - 300 scfm at7.0 psig, each, vfd controlled 20 hp motor
I for digester basins - 300 scfm at7.0 psig, vfd controlled 20 hp motor
E.Aerobic Digesters - two basins -
Volume, primary digester 52,000 gallons, 12'swd, 32'x l8'wide (14'walls)
Volume, 2ndary digester 46,000 gallons, l2' swd, 32' x 16' wide
l. mixers - 1.6 + hp, primary digester
2. diffusers capacity - 200 scfrn in primary (aeration req'd: 100 to 150 scfrn)
- 150 scfm in 2ndary (aeration roqrd: 50 to 100 scfm)
Disinfection - Hypochlorite, for Class A and for residual req'd by DOH in pipeline
I . two (2) systems, redundant, each capable of feeding l0 mg/L of diluted hypochlorite
(with UW carrier) into system with I hour detention time at 170 gpm peak effluent flow rate
C.
D.
F
I
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(chlorine contact basin volume :0.21mgd, avg x 60 minutes : 8,750 gallons (93' of 48" dia
pipe - or - 50 feet of 60" diameter pipe, not including manholes at each end)
2. two effluent residual analyzers
3. nvo effluent turbidity meters
PUMP Summary:
1. EQ Basin process feed pumps - 170 gpm at 16 ft. TDH , each of two, vfcl control
2. MLR pumps - 600 at20 ft each of 2. vfd, manual set with level control in wet
well, pump back to Anoxic Basins
3. WAS pump - 40 gpm at 20'tdh; two pumps, one installed (one on-shelf standby)
4. UW water pump - -120 gpm at 110 psi (vertical turbine): one pump
5. Effluent purple pipe pumps - 200 gpm at 110 psi (vertical turbine): two pumps. I standby
6. Scum Pump (Vogelsang) - 40 qrm at 15 psi: one pump
7. Sludge-FEED pump - 120 gpm at 30 psi: one pump. vfd controlled
Blower Summary: each with sound attenuated enclosure:
Four (4) blowers, each 300 scfm at 7.0 psi, vfd control on each
Flow Meters:
l. Headworks, 2" Parshall flume with24" sides & Ultrasonic flow meter, Class l, Div 1
2. EQ pumps discharge: 3" mag meter
3. MLR pumps discharge: 4" mag meter
4. WAS pump to digester: 2" magmeter
5. Scum pump to digester: 2" magmeter
6. Sludge feed pump: 3" mag meter
7. Effluent Pumps - 4" magmeter
8. Zenon membrane basin flow meters - four at6" magmeters
J. Motor operated valves: one to eachZenon membrane basin - four on 8" plug valves
H.
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