DESIGN - psc.state.wv.us

DESIGN CALCULATIONS

15

25

Min. Temperature

Max. Temperature

OVERVIEW:

I OC

"C

----- OC

O C -----

A submerged membrane bioreactor (MBR) plant has been designed for the Old Standard Development WWTP. The design basis is per the wastewater characterktics snppkd by the cmsu!thg engineer.

Anoxic Tank Volume

MBR Blower Capacity Pre-Air

Requirement

Recycle Pump Capacity

VANOX,,

AirBLmR

AirBL,pA

QRR

The aeration system has been designed to allow for MBR operation between about l0,100mg/l and 15,000 mg/l MCSS. Tables 1 and 2 below summarize the results of the MBR process design calculations.

7,300 gal Volume needed for full denit (to meet nitrogen limit)

50% extra capacity for increased air scour 525

@ design flow / loading 167

52 1 €Pm 44 at average daily flow

SCFM

SCFM

Project: Old Standard Development, WV Datesubmitted 5i3/2004

IPart 1 : Membrane Specification 1 1. The hydraulic capacity of an MBR plant is a function of temperature ~ n d the number c!f membrane

cartridges. At the minimum design temperature, the estimated membrane flux will be:

Minimum Operating I eriiperaiure, TMM T

Membrane Flux, Fc

i5 - -

= 14.5

"C

gal/fi2*day

2. Once the design flux is determined, the required number of membrane cartridges can be calculated as follows :

Design Flow, Q D

Membrane Area Per Cartridge, Ac

Required Number of Membrane Cartridges, Cad,,

Selected Nu~,b,er of Membrane Units, #Units

Actual Number of Cartridges, CartAcT

= 125,000

= 8.6

gayday

f-t2

= WFC) * (QD) * WAC)

= 986 cartridges

= 10

= 1,000

ESlOO

c2rtridges

Project: Old Standard Development, W V Date Submitted: 5/3/2004

2

SECTION 2: TANK SIZING CALCULATIONS

IPart 1 : Aeration Tank (MBR) -~ I 1. Initially, the volume of an M E R is ca!cu!atitec! based QE the number m d t y p of mexbrzne wits used

to provide the design hydraulic capacity (see Section 1, Part 1):

Available SWD, HsYG

Minimum MBR Tank Width, WmR

Distance Between Membrane Unit Centerlines, LcL

Distance from End Membrane Unit to Tank Wall, LwaL

Number of MBR Tanks, #Tanks

Number of Units Per Basin, #Units

Minimum MBR Tank Length, LMBR

Total MBR Volume, v. n..... ~ 1Jm- 1

Volume Displaced by Each Cartridge, VDISp,CART

= 8.3

= 7.46

= 3.33

= 2.10

= 2

= 5

ft

ft

ft

ft

tanks

units

=

= 17.5 ft

[LcL* (#Units per basin - l)] + 2 * LWML

= 0.7926 gaycartridge

Project: OId Standard Development, WV Date Submitted: 5/3/2004

3

ToraI Volume Displaced by Membranes, VDISp = VD!SP,C.ART * cart,cT

= 793 &a1

Volume Available for Nitrification, VAVAIL,MVI13R = VII.IBR,T - VDIS?

Pal = 15:436 0---

2. The MBR can be operated at total sludge ages (nitrification and denitrification) from 10 days and up. The nitrates produced in the MBR Basin are sent back to the Anoxic Tank for denitrification. The net nitrogen load based on plant design parameters is:

Influent BOB Concentration, CBoDo = 220 mg/l

Influent BOD Load, NBoDo = CBODo * [8.34 (Ib/MGD)/(mg/l)] * (Qd106)

Effluent BOD Concentration, CBoDl

= 229.4

= 5

Effluent BOD Load, NBoDl = CBoD, * [8.31

Influent Nitrogen Concentration, CNo

Influent Nitrogen Load, NNo

Yield, Y

Nitrogen Concentration in Waste Sludge, CwAs

= 5.2

= 35

Ib BOD / day

mdl

(lbNGD)/(mg/l)] *

lb BOD / day

mdl

= CNO * [8.34 (lb/MGD)/(mg/l)] * (QD/106 gal/MG)

= 36.5 Ib N / day

= 0.70 lb TSS / Ib BOD

= 6.0% lb N / lb SS

Project: Old Standard Development, WV Date Submitted: 5/3/2004

4

Waste Sludge Nitrogen Lnad, N,-,., - - NBGDG * y * C,WAS

= 9.6 It> N / day

- 11, X T / A-.. - 26.9 1u 1-4 I uay

Amount of NO3-Nitrogen Denitrified, D N N = VANOX 1 VANOX,CALC * NNNET

(amount of denit possible) = 26.9 Ib N / day (See Sect 2, Part 2)

Calculated Effluent

(Amount of target not achieved) = -0.1 Ib N / day

Nitrate Load, NNI,cALc = NmET-DNN

Calculated Effluent Nitrate Concentration CNI,CALC - NNI,CALC / r8.34 (Ib/MGD)/(mg/l)] *

(Amount of target not

-

(Qdl O6 ga1N.G)

achieved) = -0.1 mg/l

Design Effluent Nitrate Concentration Based on Full Denitrification, CNo3,i = 5.c .Id:

Design Effluent Nitrate Loading Based on Full Denitrification, NpJo3,: - - CN03,I * l5.34 (~b/mgd)/(mg/l)] * (QD/106 gal/I/iG)

= 5.2 lb N / day


5

. > 3. 3ecaiise the rate at which TI(&' is consrmed is SIQW relative to ihe ~ o n s u m p t i o ~ of BOD, the reqwec aeration process vo!ume is given by:

Minimum Concentration of Suspended Solids in miz , SSh/IBR = 10,000 m g / l

= 0.08 Ib TSS / gal

Maximum Concentration of Suspended Solids in

ssm,MAx = 18,000 mg/i

= 0.15 ib TSS / gal

Rate of Nitrification at Minimum Temp, rNIT = 0.039 ib N / Ib SS*day

Safety Factor, SF = 10%

Minimum Volume Required for Nitrification, VN,M, = NNNET * (1/rMT) * (1/ssMBR) * (1 -I- SF)

IPart 2: Anoxic (Denitrification) Tank 1

I. The concefitratior? cf suspended so!ids in the Anoxic Tmk is a frjiiction ofthe recycle rate and the MLSS concentration in the MBR. The recycle rate is calculated by:

Net Nitrogen Concentration, C m T = N ~ E T * (1 mg/l/ 8.34 1bMGD) * (1 06/QD)

RAS Recycle Rate, &ALC

= 4.2


6

2: The required vo!ume ofthe Anoxic Tank is determined by the minim~rn rate zt which denitrificatior, occurs, the concentration of heterotrophic organisms, and the nitrate load:

= 0.83

Concentration of Suspended Solids in Anoxic Tank, SSmox = R R * S S M f ) R

= 0.07

Rate of Denitrification at Minimum Temp, rDmIT = 0.047


lb TSS / gal

lb NO3 / lb TSS*day

Volume Available for Denitrification, VANOX = 7,300 gal


7

1.

2.

If the minimum nitrification volume exceeds the MBR voluine (see Section 2, Part 1) then a Pre- Aeration Tank is required to meet effluent nitrogen limits:

Pre-Aeration Tank VPA,NIT = VNMIN - VAVAIL,MBR

= -6,393 gai

< 0 (Not required to meet nitrification volume)

Sufficient aerated. basin volume is needed to provide enough biomass to maintain a reasonabie food to mass (F:M) ratio for the process (0.1 to 0.2). The volume ofthe pre-aeration basin can be calculated as follows:

F:M Ratio Assumed to Calculate Pre-Air Volume, F:'ASSDpppp ~ ~~~p~~ ~ ~ = ~p 0.15

Volume Available for Pre-Aeration, VpA

= 3,514

(Pre-aeration volume required)

= 5,800

Projeet: Old Standard Development, WV Date Submitted: 5/3/2004

8

SECTHOPU' 3: PIL-M4T F:M, HRT, 6; SRT

1. The F:M ratio can be calculated as follows:

Plant Food to Mass Ratio, F:M

= 0.10

2. HRT is an estimate of the average time liquid stays in a given volume. For the MEIR and Anoxic Tank, the design HRT is:

MBR Hydraulic Residence Time, QMBR

Anoxic Tank Hydraulic Residence Time, QANOX

Pre-AerZtion Tank Hydraulic Residence Time, €IpA

Total Hydraulic Residence Time, CIT

= 3.0 hr

= VANOX * (l/QD) * (24 hrkiay)

= 1.4 hr

=

= 1.1 hr

=

= 5.5 hr

VpA * (l/QD) * (24 hr/day)

O ~ R + ANO OX + @PA


9

3. Similar to I-IRT ia coficept, SRT is an estimate ofthe a-wage time solids spend in a given vo!un?e and is calculated as follows:

Wasting Rate of Activated Sludge, NwAs

Total Mass of Suspended Solids, Mss

Total Solids Residence Time, eC

= Y * (4380, - CBODI) * 8.34 * (QD/i06)

= 157 Ib TSS I day

= 2,194

= MSSfNWAS

= 14

lb TSS

days


10

- m u a l Oxygen Requirements 1

1. Carbonaceous biochemical oxygen demand (CBOD) is a measure of the oxygen consumed during assimilation ofwaste carbon entering the MBR. The actual CBOE load is:

= 0.8 lb 0 2 I Ib BOD

= 179 lb 0, I day

2. Nitrifying organisms are able to utilize reduced ammonia in place of CBOD as an electron acceptor in cell synthesis. The oxygen demand exerted during this process is referred to as nitrogenous biochemical oxygen demand (NBOD) and can be calculated by:

Unit Nitrogen Oxygen Demand, OZUNIT = 4.57 lb 0 2 I lb N

Total Nitrogen Oxygen Demand, 0 2 m I T = 0 2 ~ T * I \ J N N E T

= 123 lb O2 I day

3. Microorganisms will consume other microorganisms in a process called endogenous decay. The oxygen demand exerted by endogenous decay is:

Endogenous Oxygen unit Requirement, c = 0.07 ib O2 I ib VSS*day T T

Volatile Fraction of Suspended Solids, S S N S S = 0.75


11

Total Endogenous Oxygen Demand, OZEND

4. During denitrification a certain amount of BOD is consumed. Therefore, we can take a denitrification credit when calculating the oxygen demand. The denitrification credit can be calculated as follows:

Unit BOD Consumed During Denitrification, BODUNIT

Total Denitrification Credit, OZCREDIT

= 2.86 lb BOD I lb N

= (NNNET - NN03,l) * BODUNIT * 02UBOD

= 50 lb 0, I day

5. The oxygen demand of the process is the sum total of the demands calculated in the previous three steps and represents the actual oxygen requirement (AOR) of the plant. The AOR is:

Total Oxygen Demand, AOR

= 341' lb 0, I day


12

1. The membrane units are supplied with integral coarse bubble diffusers (4 mm). The air supplied by the diffuser is used tc provide membrane scouring, fiixing, and process oxygen. The minimtm air required for cleaning is:

Cleaning Air Required Per Cartridge, AircaRT

Total Cleaning Air Required, Air,,,,,

= 0.350 SGFM

2. The rnininium air required for mixing is:

Unit Mixing Air, Air- = 0.015 SCFM / ft3

Mixing Air For MBR, AirMmR - - VA,,,,, * (1 ft3/7.48 gal) * 0.015 SCFM / ft3

= 31 SCFM

AirMMBR < Cleaning Air Supplied

3. The amount ofusabk oxygen provided by the membrane units is ii function of several factors, including: site conditions, diffuser depth, residual dissolved oxygen concentration @O), and thermodynamickinetic correction factors, and is given by:

Kinetic Correction Factor, a = 0.765

Thermodynamic Correction Factor, p = 0.95


13

Temperatwe Correction Factor, 8 = 1.024

Oxygen Saturation at Site Barometric Pressure and Wastewater Temp, CTp = 7.94 mg/l

Oxygen Saturation at Standard Temp and Pressure (STP), C,, = 9,08 mgl!.

Residual Oxygen Concentration in TvlBR, CR = 1.0 mg/i

Max Design Operating Temp, T "C = 25

Standard Oxygen Transfer Rate, SOTR 1 = AOR * 1/[a * ((p * C T ~ - C3/C2,) * 0T-20

lb O2 I day = 550

4. The process air requirement can be calculated as following:

Diffuser Submergence, Hs

Oxygen Transfer Efficiency per Foot , SOTE, per foot submergence = 0.5%

Standard Oxygen Transfer Efficiency, SOTE

= 4%

Density of Air, PAIR = 0.075


14

n Mass rrzction of Oxygen In Air, CO2 = 0.232 Ib O2 / lb Air

= 601 SCFM

IPart 3 : MBR Blower Capacity I

1. The blo.wer capacity is calcuIated as follows:


Blower Capacity, AirBLowR = (1 + SF) * AIRCLEAN

= 525 SCFM

QAIR > AIRBLOWER (Fine bubble pre-aeration required)

Fihpercent extra air is provided as a safety factor

IPart 4: Fine Bubble Air

1 - In the event of insufficient nitrification volume or relatively high loadings, supplemental aeration may be required. Any air not supplied in the MBR will be supplied in a fine bubble pre-aeration basin. The aeration requirements for this basin can be calculated as follows:

Total Gxygen Demand, AOR = 341 lb O2 I day

Process Air Required, QArR = 601 SCFb.4

Minimum Air Available in MBR, AirMsqMIN = 350 SCFM


15

- Standard Oxygen Transfer Rate, SOTRAVAIL

c i'ota.1 Oxygen Demand, AORAVAIL

Air Required in Pre-Aeration Basin, AORpA

Kinetic Correction Factor, a

Thermodynamic Correction Factor, p

Temperature Correction Factor, 8

Oxygen Saturation at Site Barometric Pressure and Wastewater Temp, CTp

Oxygen Saturation at Standard Temp and Pressure (STP), C2,

Residual Oxygen Concentration in MBR, CR

Max Design Operating Temp, T

= 320 Ib O2 I day

= AOR - AORAvNL

lb Q2 I day = 143

(he-Aeration required)

= 0.42

= 0.95

= 1.03

= 7.94

= 9.08

= 0.5

= 25 "C

Project: Oid Standard Development, WV Date Submitted: 5/3/2004

16

= 2%

SWD in Pre-Air Basin = 9 Ft. pASWD

Standard Oxygen Transfer Efficiency: SOTE = PAsW*SOTEx

Air Required in Pre-Aeration Basin, QPA = AOR,, * l/[a * ((p * CTp - C&&) * 0T-20] *

(l/pAIR) * (1/Co2) * (MOTE) * (day/1440 min)

= 88 SCFM


17

- __ [Part 1 : Sodium Hypochlorite (Bi-Annual Cleaning) I

1. Approximately once every six months a recovery cleaning of the membrane cartridges is required for organic fouling. A 0.5% soiution of sodium hypochlorite is used €or this cleaning, and the volume of chemical needed can be calculated by:

Actual Nurnbei of Cartridges, CahACT = 1,000 cartridges

Volume of Dilute Chemical Needed per cartridge, VCART = 0.8 gal dilute / cart

Total Volume of Dilute Chemical Needed per Cleaning, VT,DL = C ~ ~ A C T * VCART

= 800 gal dilute solution

Concentration of Dilute NaoC1~ CD,NaOCI = 0.5%

Concentration of Stock NaoCi, CS,NaOCI = 12.5% -

Dilution Rate, DRNaocl = CS,NaOCI / CD,NaOCI c

= 25 -

Number of NaOCl Cleanings Per Year, clpNaOCl = 2 cleanings / year

I

t = clpNaOCl * VT,DIL / DRNaOCl

= 64. gal stock NaOCl / year

Project: Oid Standard iieveiopmeni, ivV Date Submitted: 5/3/2004

18

1 : In case of inorganic fouling (or scaling), the membrane cartridges should be cleaned with a 0.5% solution of oxalic or citric acid once per year.

Actual Number of Cartridges, CartAcl = 1,000 cartridges

Volume of Dilute Chemical Needed per cartridge, VCART = 0.8 gal dilute / cart

Total Volume of Oilute Chemical Needed per Cleaning, VT>,,

= 800 gal dilute solution

Concentration of Dilute Acid, %,Acid = 0.5%

Concentration of Stock Acid, CS,Acid = 100%

a Dilution Rate, DRA,.id = CS,Acid / CD,Acid

= 200

Number of NaOCl Cleanings Per Year, clpAcid

Total Volume of Stock Chemical Needed per Year, VT,STOCK

= 1 cleanings / year

= CIPAcid * VT,DIL/ DRAcid

= 4 gal stock acid / year

Project: Old Standard Development, ‘WV Date Submitted: 5/3/2004

19

A. One set of special tools required for normal operations and maintenance, and spare parts9 shall be provided for each piece of equipment. Spare parts shall be effectively protected fi-om moisture and corrosion with appropriate wrappings or coatings or a Combination thereof. Spare parts shall be hrnished in sturdy labeled L,-n, U V A b O .

B. Additional spare parts shall include, as a minimum, for each different size unit:

1. Two seal and gasket kits for each different sized pump.

2. One complete set of all pump bearings for each different sized pump.

3. One complete set of aii gaskets, O-rings, etc.

C. The following spare parts shall be finished with the blower:

Blower Spare Parts

Shaft Bearings

End Cover Oil Seal

Main Oil Seals

Gear Keys

End Cover 0-Rings

Gearbox Gasket

Gear End Bearing Carrier Gasket

Drive Belts

Quantitv Furnished

2

1

2

1 pair

1

1

1

1

D. The following spare parts shall be furnished with the internal recycle pumps:

i . One set of 0-Rings

2. One set of wear rings

3. One mechanicai seal, each type of pump

The foiiowing list represents the items EWiGROQUlir", 2K. supplies as standard for ail MBR projects, excluding M-PAC packzge plants:

MBR Basins

A. Piping and Fittings

1. Air Supply System a) Type 304 SS header including all branch connections for air supply to each

membrane unit (scope break is 1'4" downstream of the last branch connection).

b) Type 304 SS branch piping fiom branch connections for air supply to the Dl Connection of each membrane unit.

c) Type 304 SS header including all branch connections for air SCOUT fiom each membrane unit.

d) Type 304 S S branch piping from the 9UT coimection of each rnembrme unit to each branch connection for air scour.

e) Type 304 SS clamp couplings to adjoin branch piping to/fiom the IN/OUT connections of each membrane unit.

2. Permeate Collection System a) Sch 80 PVC header, including all branch connections for permeate collection

from each membrane unit (scope break is 1'-0" downstream of the last branch connection).

b) Sch 80 PVC branch pipinghose fiom the header to each membrane unit. c) Type 304 SS clamp couplings to adjoin branch pipinghose to each membrane

U d .

3. Chemical Dosing System (Sodium Hypochlorite/Oxalic Acid) a) Sch 80 PVC header, including all branch connections for chemical dosing to

each membrane unit (scope break is 1'-0" downstream of the last branch connection).

b) Sch 80 PVC branch piping from header to the siphon brealdchemical injection point on each membrane unit.

B. Valves

1. Air Supply System 2) Type 304 SS wafer-style butterfly valve for each brmch comectim to each IN on membrane unit (see literature for connection sizes of diffuser cases).

b) Type 304 SS full port ball valve for each branch connection to each OUT on membrane unit (see literature for connection sizes of diffuser cases),

1

c> Type 304 SS fill1 port bali valve wifh electric actuator for air scour.

2. Permeate Collection System a) Sch 80 PVC bail valves for sampling ai each b~anch pipe?fiose. b) Sch 80 PVC ba!l valves for Feme& isdatior, on gravity systems. c) Sch 80 FVC 3-way ball valves for permeate isolation on pumped systems.

3. Chemical Dosing System (Sodium Hypochlorite/Oxalic Acid) a) Sch 80 PVC ball valves for isolation.

C. Miscellaneous

1. Two (2) Type 304 S S Guide rails per membrane unit/diffuser housing. 2. Two (2) Type 304 SS Stabilizer rails per membrane unit/diffuser housing. 3. Four (4) Type 304 SS Lifting chain assemblies for pumped systems (optional for

gravity systems). 4. Lot of Type 18-8 SS Bolts, Nuts, Washers €or fastening Guide rails to Stabilizer

rails. 5. Lot of Type 304 SS pipe supports for supplied piping inside MBR tank.

2

To determine the status of the membrane cartridges, please follow these steps:

1 1 f t h . e ~ is a spike In the turbidity, the SCMIA- system will set off afi. alam,

3. Isolate the unit with the damaged membrane(s).

4. Take the basin with the damaged membrane@) offline.

5. Lower the water level to just below the clear tubes.

6 . Rinse off tubes with a water hose.

7. The clear tube on the damaged membrane(s) will be discolored.

8. Remove the damaged membrane(s) and replace.

9. Put basin back online. ~ ~ -~ ~~~~~~~~~

The E i i ~ i ~ ~ ~ p i p h@3R is designed specifically as an easy to ~onsim~i~f, low mairitename, easy to operate system The following is a list of s t m p and commissioning services we shall provide for the Old Standard LLC, James Town, WV facility. Please see Table I for a break down of site visits and number of service days provided for this project.

Instauation Supervision Enviroquip field representatives shall provide guidance with installation, inspect all equipment during installation, and respond to the Engineer and Contractor queries.

Process Start-up Enviroquip field service representatives shall perform all loop checking and function testing as required for commissioning and operation of the MBR plant.

Operator Training Enviroquip field service representatives shall train the Owner’s representatives in routine membrane troubleshooting and process oplirnizaiion.

With nearly forty years of experience providing complete conventional and MBR wastewater treatment plants, Enviroquip, Inc. has trained thousands of operators and conducted scores of seminars. experience in commissioning and maintaining over a thousand MBR plants worldwide, each treating a unique waste stream.

# In addition, the Kubota Corporation has unparalleled

Our long history in the wastewater treatment industry? coupled with Kubota’s resume; has allowed Enviroquip to develop targeted training tools that generally allow operator training to be conducted in two eight-hour classroom sessions.

Session I In the first session, operators are given an overview of the process and introduced to our membrane technology using a multi-media presentation that includes a short video and a Powerpoint presentation. Also during this session, the plant operation and maintenance manuai is reviewed and the following items addressed in detail:

Process Requirements Y I %zpling a ~ d Testing Prc?tc?sa! Routine Maintenance Requirements Troubleshooting Guidelines

Session 2 Following Session 1, a short written test ensures a complete understanding of the process and indicates that personnel are ready for hands-on training. Hands-on training is

1

provided in Session 2 using the O&M manual as a i?amework for discussion and note taking. Procedures covered during this session indude:

Diffuser Assessment and Cleaning Membrme AssessmeEt a d Cleaing -halysis of Mixed Liq71or Characteristics Identifying Membrane Integrity

QqJQ;,n,g Teeh,nicza, Scpp& Enviroquip’s proposed SZABA system will include the ability to monitor key performance parameters remotely. This will allow the Owner’s representatives and Enviroquip’s personnel to jointly review plant data at any time during normal working hours and to make necessary control adjustments. This online support will be available to the Owner’s representatives for a minimum of 3 years from the date of startup.

Table 1. Field Service

Total: 10 man-days

2

Enviroquip’s scope of design generally iciudes aeration, pumping, mixing, filtration, a d air delivery systems. Specific211y? our desim scope is defined by the following tasks:

1. Modeling of MBR process performance.

3. Preparation of -MBi3 process and instrumentation drawings (Enviroquip scope of supply only).

4. Preparation of MBR mechanical, electrical, site layout and equipment drawings for installation (Enviroquip scope of supply only).

5. Preparation of MBR equipment specifications and submittals (5 copies). 6. Scheduling of equipment fabrication and order long-lead equipment. 7. MBR Operation & Maintenance Manual development.

2. ,kIn,a!;.sis Gf?.rnR system ky&mEcs.

1

ElIv1Poqii.ip7 klfIi c. Old Standard ELC WWTP Charles Town, WV Proposal No. 03 1904-O%-JP,-R-3

2. Mechanical componexts including the drive assembly, shop assembled by ENVIROQUIP, INC. shall be shop cleaned and coated with Dupont acrylic enamel cdzr: gmy. A!! ether mechmica! c ~ m p a m t s shall receive the

. manufacturer’s standard finish coating.

3. All non-ferrous surfaces including stainless steei, aiuminum, brass, PVC, and galvanized items shall not be coated or painted.

1.

,7 L.

3.

4.

5.

6.

7.

8.

9.

10.

11.

i2.

13.

EIWROQUP, INC. does not include any material or labor for concrete work, grouting, or sealant. ENVXOQyUP9 and shop or field coating/cleaning of any piping being supplied. ENVIROQUIP, INC. is not providing any wrapping tape or cathodic protection for any pipe penetrations. ENVIROQUP, INC. shall not provide any plastic coding pipe markers, legend markers, or directional arrows. Piping will be piece-marked for erection purposes. ENVIROQUIP, INC. shall not provide materials or labor for heat tracing, insulation, or related controls and appurtenances. EWIROQUTP, INC. shall not provide any factory testing of equipment being supplied. ENVIRQQUIP, INC. shall not provide a factory-based engineer or representative, other than Enviroquip’s representatives, to commission any equipment being supplied. ENVIROQUIP, INC. is not supplying or installing any instrument block and bleed valves. ENVIRQQUIP, INC. does not include pickling/passivating of any stainless steel piping. ENVIRQQUIP, INC. does not include cathodic protection for the MBRRre-Air tanks. ENVIROQUIP, INC. does not include any plant lighting for the MBR package plant. ENVIROQUIP, INC. does not inchcle any material OF labor for the comectiorr of the main power utilities to the MBR plant. ENVIROQUIP, INC. does not include any equipment or services not explicitly outlined in the purchase agreement.

does not include any shop priming, surface prepmtion,

Ai! information included as a part of ine accompanying bid documenis shall remain the sole property of Enviroquip, Inc. in conformance with the copyrighi laws and feguiafions of the ilnifea' States. This bid documeni may not be photocopied or faxed without prior approval of Enviroauip: Inc. The data provided herein is furnished on a resfricted basis and is not to be used in acy way detrimental to the interests of Enviroquip, Inc.

,

c

Enviroquip, Inc.

Niernbrane Bioreactor for Wastewater 7 - - .

'reatment

DESIGN - psc.state.wv.us

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