Class A Training Manual - Ohio EPA

Class A Training Manual For the Ohio Wastewater Treatment CerƟficaƟon Exam

Division of Surface Water Compliance Assistance Unit March 2015

Class A Manual

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Table of Contents i IntroducƟon i Basic Treatment Units i Controlling the Units i Maintenance i RegulaƟons i How do I

Ohio Environmental ProtecƟon Agency

Table of Contents

IntroducƟon

Class A Manual

Introduction

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IntroducƟon — Page 1

IntroducƟon

Class A Manual

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IntroducƟon

Class A Manual

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Basic Treatment Units

Class A Manual

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Preliminary

Secondary

TerƟary

Solids Handling

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Basic Treatment Units — Page 1


Class A Manual

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Preliminary Stage

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Trash Trap

Flow EqualizaƟon

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Secondary Stage

Clarifier

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AeraƟon




Class A Manual

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Post Air

Sand FiltraƟon DisinfecƟon

Dosing Tank

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Solids Handling Stage

Digester

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Class A Manual

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Trash Trap

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Class A Manual

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Preliminary Stage

Flow EqualizaƟon

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Class A Manual

Preliminary Stage: Flow Equalization ,QWKHH[DPSOHEHORZWKHFKDUWLQGLFDWHVWKHWRWDOJDOORQVUHFHLYHGDWDSDFNDJHSODQWRQDQKRXU O\EDVLV)ORZVDUHWKHORZHVWDWQLJKWZKHQIHZHUXVHUVDUHFRQWULEXWLQJWRWKHIORZ$VWKHGD\ FRQWLQXHVSHDNIORZVDUHUHDFKHGDWDPSPDQGSP

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Class A Manual

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Preliminary Stage

Flow EqualizaƟon

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Preliminary Stage

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Flow EqualizaƟon



Class A Manual

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Class A Manual

Secondary Stage: Aeration 7KHGLVVROYHGDQGVXVSHQGHGSROOXWDQWVHQWHULQJWKH VHFRQGDU\VWDJHZLOOUHTXLUHDGLIIHUHQWSURFHVVWKDQ WKHSK\VLFDOSURFHVVXVHGE\WKHWUDVKWUDS7KHILUVW WUHDWPHQWXQLWLQWKHVHFRQGDU\VWDJHLVWKHDHUDWLRQ WDQN7KHDHUDWLRQWDQNUHOLHVRQDELRORJLFDOSURFHVV WRFRQYHUWGLVVROYHGDQGVXVSHQGHGVROLGVLQWREDFWH ULD

Secondary Stage

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AeraƟon

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Class A Manual

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Clarifier

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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TerƟary Stage

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Post Air

Sand FiltraƟon DisinfecƟon

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Controlling the Units

Class A Manual

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Controlling the Units — Page 1


Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

Preliminary – Flow Equalization (EQ)

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Preliminary Effluent

Aeration Tank Effluent

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

Activated Sludge Process Control and Troubleshooting Chart Box # 1:

Clarifier Effluent Ammonia < 1 mg/L

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Class A Manual

Activated Sludge Process Control and Troubleshooting Chart

Box # 2:

Aeration Effluent Ammonia: <1 mg/L

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Aera on Effluent

Clarifier Effluent

Ammonia

Ammonia

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> 1 mg/ L

Figure 1: failure in aera on tank

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Aera on Effluent

Clarifier Effluent

Ammonia

Ammonia

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> 1 mg/ L

Figure 2: failure in clarifier

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Class A Manual


Aeration Effluent: Water Temperature < 10 C

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Class A Manual

Activated Sludge Process Control and Troubleshooting Chart Box # 4

Clarifier: Solids breaking down in clarifier (ammonia re-release)

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Class A Manual


Aeration Effluent: total alkalinity <100 mg/L

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Class A Manual


Aeration: Decrease heat loss of aeration tank

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Class A Manual


Aeration Effluent: Dissolved Oxygen (D0) < 2 mg/L

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Class A Manual


Aeration: Increase alkalinity in aeration tank to >100 mg/L

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Class A Manual


Aeration Effluent: Centrifuge Spin < 4%

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Class A Manual


Aeration: Increase air supply in aeration tank

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Class A Manual


System Loading Rate: Loading greater than design

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Influent Flow = 15,000 gpd = 0.015 Million Gallons/day Influent BOD = 200 mg/L

Actual Pounds of BOD/day = (0.015 MGD) x (200 mg/L) x (8.34) = 25 lbs BOD/day

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Class A Manual


Aeration: Increase biomass in aeration tank

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Class A Manual


Aeration: Evaluate for possible toxicity issues.

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Class A Manual


Capacity: Increase capacity or decrease loading to aeration system

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Class A Manual


Aeration Effluent: Settleometer Analysis < 80% in 5 minutes

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Separa on Acceptable

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>80 % in 5 minutes




Class A Manual


Aeration Effluent: Centrifuge Spin > 4%

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Class A Manual


Aeration or Clarifier: Brown foam on surface

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Class A Manual


Aeration: Too much biomass in system, increase wasting rate

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Excessive Biomass

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Establishing a wasting rate is simply a process of maintaining sufficient biomass to achieve complete conversion in the aeration tank (ammonia < 1 mg/L), while not maintaining an excessive amount of biomass to inhibit the settling rate in the clarifier (< 80% in 5 minutes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




Class A Manual


Aeration: Dissolved oxygen < 1 mg/L for extended period of time

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Class A Manual


Aeration: Low F/M ratio, increase wasting rate

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Class A Manual


Aeration: Evaluate influent/internal side streams for septic sources

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Class A Manual


Aeration: Increase air supply to match organic loading

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Aeration Tank Dissolved Oxygen , mg/L 8.0

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Class A Manual


Clarifier Effluent: Biomass observed leaving the clarifier

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Class A Manual


Compliance

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Separation

Conversion

Ammonia > 1 mg/L

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Violations

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Class A Manual


Clarifier: Sludge blanket < 30% of clarifier water depth

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Class A Manual


Clarifier: Return Activated Sludge rate

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Class A Manual


Clarifier: Hydraulic issues in clarifier.

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Class A Manual


Clarifier: Adjust return activated sludge (RAS) rate.

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Class A Manual


Clarifier: SOR or SLR in excess of clarifier design capacity

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

Solids Handling Stage - Digester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hio Environmental Protec on Agency



Class A Manual

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Class A Manual

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Class A Manual

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Preliminary

Secondary

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Solids Handling

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Maintenance

Class A Manual

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Secondary

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Maintenance — Page 1

Maintenance

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Class A Manual

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Class A Manual

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Class A Manual

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Class A Manual

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How do I — Page 1


Class A Manual

How do I measure ammonia in the clarifier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³VSOLW VDPSOLQJ´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hio Environmental ProtecƟon Agency

How do I — Page 2


Class A Manual

How do I measure ammonia in the aeration tank? 7KHGLIIHUHQFHEHWZHHQPHDVXULQJDPPRQLDLQWKHDHUDWLRQWDQNDQGLQWKHFODULILHULVWKDWWKHVXV SHQGHGVROLGVFRQFHQWUDWLRQLQWKHDHUDWLRQWDQNZLOOLQYDOLGDWHWKHUHVXOWV8VHWKHFHQWULIXJHWR TXLFNO\VHSDUDWHWKHVXVSHQGHGVROLGVDQGREWDLQDVXIILFLHQWVDPSOHIRUDPPRQLDDQDO\VLV Collect a sample from the aeration tank effluent.)LOOWZRFHQWULIXJHWXEHVWRWKHPDUN DQGVSLQWKHVDPSOHIRUWZRPLQXWHV$IWHUFHQWULIXJLQJWKHFOHDUOLTXLGRQWRSZLOOEHRIVXIILFLHQW YROXPHWRDQDO\]HIRUDPPRQLD $QRWKHUPHWKRGLVWRGUDZDVDPSOHIRUDPPRQLDDQDO \VLVIURPWKHVXSHUQDWDQWRIDVHWWOHRPHWHUDQDO\VLVDI WHULWKDVKDGWLPHWRDOORZIRUEDFWHULDVHSDUDWLRQIURP WKHFOHDUZDWHU&ROOHFWDIUHVKVDPSOHIURPWKHDHUD WLRQWDQNEXWGRQ¶WDOORZWKHVHWWOHRPHWHUWRVLWIRU PRUHWKDQDIHZPLQXWHVEHIRUHDVDPSOHLVFROOHFWHG IRUDQDO\VLV 2QFHDFOHDUVDPSOHRIWKHDHUDWLRQWDQNHIIOXHQWLVFRO OHFWHGDQDO\]HZLWKWKHVDPHDPPRQLDWHVWPHWKRGROR J\\RXXVHIRUSURFHVVFRQWURO


How do I — Page 3


Class A Manual

How do I eliminate the biological foam on the aeration tank? $VWKHGLVVROYHGDQGVXVSHQGHGSROOXWDQWVFRQWLQXHWRIORZLQWRWKHDHUDWLRQWDQNPRUHEDFWHULDDUH JHQHUDWHG,IH[FHVVEDFWHULDDUHQRWUHPRYHGRU³ZDVWHGÍURPWKH6HFRQGDU\6WDJHWKHEDFWHULD FRQFHQWUDWLRQLQFUHDVHVWRDSRLQWZKHUHFRPSHWLWLRQIRUWKHLQFRPLQJ³IRRGÉHFRPHVH[WUHPH 7KHUHDUHFHUWDLQEDFWHULDZKLFKFDQQDWXUDOO\RXWFRPSHWHIRUWKHIRRGVRXUFHZKHQWKHIRRGEH FRPHVPRUHVFDUFH7KHVHW\SHVRIEDFWHULDDUHDOVRNQRZQWRJHQHUDWHDEURZQIRDPRQWKHDHUD WLRQWDQN¶VVXUIDFH7KLV³VWDUYHGJURZWK´FRQGLWLRQLVFRPPRQO\UHIHUUHGWRDVDORZ)0UDWLRHQYL URQPHQWORZIRRGWRPLFURRUJDQLVPUDWLR $ORZ)0UDWLRLQWKHDHUDWLRQWDQNFDQSURPRWHELR ORJLFDOIRDPZKLFKPD\PLJUDWHWRWKHFODULILHUVXUIDFH7RSUHYHQWWKLVORZ)0UDWLRLQWKHDHUDWLRQ WDQNDQRSHUDWRUPXVWHLWKHULQFUHDVHWKHIRRGLQIOXHQWF%2' FRPLQJLQWRWKHDHUDWLRQWDQNRUGH FUHDVHWKHR[LGDWLYHSUHVVXUHZLWKLQWKHDHUDWLRQWDQN 2SHUDWRUVKDYHOLWWOHFRQWURORIWKHRUJDQLFORDGFRPLQJLQWRWKHWUHDWPHQWV\VWHP+RZHYHURSHUD WRUVKDYHVHYHUDOPHWKRGVWRFRQWUROWKH³R[LGDWLYHSUHVVXUH´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³SUHVVXUH´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hio Environmental ProtecƟon Agency

How do I — Page 4


Class A Manual

How do I determine if ammonia is being released in the clarifier blanket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¶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hio Environmental ProtecƟon Agency

How do I — Page 5


Class A Manual

How do I measure total alkalinity in the aeration tank? Collect a sample from the aeration tank effluent.)LOOWZRFHQWULIXJHWXEHVWRWKHPDUN DQGVSLQWKHVDPSOHIRUWZRPLQXWHV7KHFOHDUOLTXLGOHIWRQWRSDIWHUFHQWULIXJLQJLVRIVXIILFLHQW YROXPHWRDQDO\]HXVLQJPRVWILHOGWHVWNLWV ,WLVUHFRPPHQGHGWKDW\RXGRQRWXVH³WHVWVWULSV´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


How do I — Page 6


Class A Manual

How do I determine how much aeration capacity is required? 7KHWUHDWPHQWV\VWHPLVGHVLJQHGIRUDQLQIOXHQWF%2'FRQFHQWUDWLRQDQGDYHUDJHGDLO\IORZUDWH 7KHWRWDORUJDQLFORDGLQJWRWKHV\VWHPLVDIXQFWLRQRIERWKRIWKHVHYDOXHV,ILQIOXHQWF%2'FRQ FHQWUDWLRQVUHPDLQWKHVDPHEXWWKHLQIOXHQWIORZVGHFUHDVHWKHQOHVVDHUDWLRQRU³R[LGDWLYHSUHV VXUH´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How do I — Page 7


Class A Manual

How do I measure solids in the clarifier? $VLPSOHPHWKRGWRLGHQWLI\LIEDFWHULDDUH³KLGLQJ´LQWKHFODULILHULVWRXVHWKHFRUHVDPSOHUDQG PHDVXUHWKHFRPSDFWHGVOXGJHEODQNHWLQWKHFODULILHU,IWKHVOXGJHEODQNHWVDUHOHVVWKDQRI WKHFODULILHUZDWHUGHSWKWKHQWKHPDMRULW\RIVROLGVDUHLQWKHDHUDWLRQWDQN,IWKHVOXGJHEODQNHW LQWKHFODULILHULVJUHDWHUWKDQWKHEDFWHULDDUH³KDQJLQJRXW´LQWKHFODULILHUWRRORQJ)RUFODUL ILHUVGHVLJQHGZLWKPXOWLSOHKRSSHUVPHDVXUHWKHEODQNHWGHSWKRIHDFKKRSSHUDQGDYHUDJHWKH YDOXHV,WLVFRPPRQWRVHHWKHILUVWKRSSHULQDPXOWLSOHKRSSHUFODULILHUPDLQWDLQDKLJKHUEODQNHW OHYHOWKDQGRZQVWUHDPKRSSHUV /RZHUWKHFRUHVDPSOHUVORZO\LQWRWKHPLGGOHRIWKHKRS SHUFODULILHUFDUHIXOO\DYRLGLQJVXEPHUJHGSLSLQJ ³'URSSLQJ´WKHFRUHVDPSOHULQWRWKHFODULILHUZLOOSURYLGH LQDFFXUDWHVOXGJHEODQNHWGHSWKV$OVRORZHUWKHFRUHVDP SOHUYHUWLFDOO\DQGGRQRWFROOHFWDVDPSOHDVLI\RXZHUH ³VSHDUILVKLQJ´ ,IWKHVOXGJHEODQNHWLVOHVVWKDQWRRIWKHFODULIL HUZDWHUGHSWKWKHQWKHPDMRULW\RIWKHEDFWHULDDUHLQWKH DHUDWLRQWDQN 2QHZD\WRTXDQWLI\RUPHDVXUHWKHDPRXQWRIEDFWHULDLQ WKHFODULILHULVWRGLVFKDUJHWKHFODULILHUFRUHVDPSOHLQWRD EXFNHWDQGXVHWKHFHQWULIXJHWRGHWHUPLQHWKHDPRXQWRI EDFWHULDLQ WKLVFODULILHU ³SURILOH´ VDPSOH ,IWKHUHLVDWZRKRSSHUFODULILHUFRUHHDFKKRSSHU DQGPL[ERWKFRUHVDPSOHVLQDEXFNHWEHIRUHFHQWUL IXJLQJ1HLWKHUKRSSHUVKRXOGKDYHDVOXGJHEODQNHW JUHDWHUWKDQRIWKHFODULILHUZDWHUGHSWKKRZ HYHUWKHILUVWKRSSHUVOXGJHEODQNHWGHSWKLVW\SLFDOO\ KLJKHUWKDQWKHVHFRQGKRSSHU 7KHFHQWULIXJHYDOXHVRIFODULILHUFRUHVDPSOHVVKRXOG EHOHVVWKDQWKHDHUDWLRQWDQNFHQWULIXJHYDOXHV,I WKHFODULILHUFRUHVDPSOHVDUHVLPLODULQYDOXHWRDHUD WLRQWDQNYDOXHVWKHQWKHUHLVWRRPXFKPDVVLQWKH FODULILHU Ohio Environmental ProtecƟon Agency

How do I — Page 8


Class A Manual

How do I determine how much sludge to waste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³FDOFXODWH´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hio Environmental ProtecƟon Agency

How do I — Page 9


Class A Manual

How do I measure DO in the aeration tank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How do I — Page 10


Class A Manual

How do I determine how much aeration time is required? 0DWFKLQJWKHDHUDWLRQEHLQJDSSOLHGWRWKHZDVWHORDGEHLQJUHFHLYHGSURYLGHVIRURSWLPDOWUHDWPHQW FRQGLWLRQVDQGVDYHVRSHUDWLRQDOFRVWVE\UHGXFLQJEORZHUPRWRUUXQWLPHV+RZHYHUQRWPHHWLQJ WKHDHUDWLRQUHTXLUHPHQWVZLOOOHDGWRXSVHWVDQGSHUPLWYLRODWLRQV$VLPSOHZD\WR³HVWLPDWH´ EORZHUUXQWLPHLVWRFDOFXODWHWKHDFWXDORUJDQLFORDGLQJEHLQJUHFHLYHGDQGFRPSDUHLWWRWKHGH VLJQRUJDQLFORDGLQJRIWKHV\VWHP )RUH[DPSOH$WUHDWPHQWV\VWHPLVGHVLJQHGIRUDIORZRIJDOORQSHUGD\DQGDQLQIOXHQW F%2'FRQFHQWUDWLRQRIPJ/7KLVV\VWHPDFWXDOO\UHFHLYHVRQO\JSGZLWKDQLQIOXHQW F%2'FRQFHQWUDWLRQRIPJ/:KDWLVWKHSHUFHQWR[LGDWLYHFDSDFLW\EHLQJXVHG" 'HVLJQ2UJDQLF/RDGLQJ


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Class A Manual

How do I measure biomass in the aeration tank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




Class A Manual

How do I identify internal side streams as additional pollution sources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³VOXJÓRDGRIKLJKDPPRQLDVXSHUQDWDQW FRXOGSDVVWKURXJKWKHVHFRQGDU\V\VWHPQRW FRPSOHWHO\FRQYHUWHG7KHDPPRQLDQLWUR JHQLVQRWQHFHVVDULO\WR[LFEXWUDWKHULWPD\ SURYLGHDORDGWKDWH[FHHGVWKHGHVLJQFD SDFLW\$KLJKDPPRQLDVOXJORDGFRXOG FDXVHD³WR[LF´HIIHFWLIWKHWRWDODONDOLQLW\LV GHSOHWHGDQGWKHDHUDWLRQWDQNS+GURSVWRR ORZLPSDFWLQJWKHFRQYHUVLRQSURFHVV ,IWKHGHFDQWLVKLJKLQVXVSHQGHGVROLGVXVH WKHFHQWULIXJHWRVHSDUDWHVROLGVIURPWKH ZDWHUDQGSHUIRUPDQDPPRQLDDQDO\VLVRQ WKHFHQWUDWHRIWKHFHQWULIXJHWXEH




Class A Manual

How do I evaluate settling with the two-minute diluted settleometer analysis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³WUXH´VHWWOLQJFKDUDFWHULVWLFVRIWKHELRPDVV *HQWO\VWLUERWKVHWWOHRPHWHUVDQGWKHQKROGWKHSDGGOHVWLOOD IHZVHFRQGVWRHOLPLQDWHDQGZDWHUPRYHPHQWLQWKHVHWWOH RPHWHUV3XOOWKHSDGGOHVRXWDQGEHJLQWLPLQJWKHVHWWOHRPH WHUV5HFRUGWKHYDOXHVDIWHU PLQXWHVWRGHWHUPLQHWKH FDXVHIRUWKHVORZVHWWOLQJ

Diluted and Undiluted Se leometers of Dense Biomasss

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Class A Manual

How do I interpret the clarifier core sampler results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




Class A Manual

How do I determine the correct RAS pumping rate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heoreƟcal CalculaƟon )RULQVWDQFHLIWKHDFWXDO5$6VSLQLV SeƩled Sludge SeƩle Sludge Time Volume Per- SeƩled Sludge WKHQWKHVROLGVUHWHQWLRQWLPHLQ centage Spin WKHFODULILHULVMXVWRYHUPLQXWHV %XWWKHVOXGJHGRHVQRWVWRSVHWWOLQJ XQWLODERXWPLQXWHVLQGLFDWHGE\ 0 100 3.2 3.2 / 1.00 = 3.2 YHU\OLWWOHVHWWOLQJLQWKHWLPHLQWHUYDO 'HWHUPLQHWKHWDUJHW5$6UDWHZLWK VHWWOHRPHWHUDQGFHQWULIXJHE\ILQG LQJZKHUHWKHVHWWOHRPHWHUEHJLQVWR ³IODWWHQRXW´,QWKHH[DPSOHWKDW ZRXOGEHEHWZHHQDQGPLQXWHV ZLWKDWKHRUHWLFDOVHWWOHGVOXGJHVSLQ EHWZHHQDQG&KRRVLQJ IRUWKHWDUJHW5$6VSLQDGMXVWWKH WHOHVFRSLQJYDOYHXSZDUGXQWLOWKH 5$6VSLQUHDFKHVWKHGHVLUHGFRQFHQ WUDWLRQ,IWKHDFWXDO5$6VSLQZRXOG KDYHEHHQWKHQWKHWHOHVFRSLQJ YDOYHZRXOGKDYHWREHORZHUHGWR LQFUHDVHWKH5$6UDWHWRWKHGHVLUHG VSLQ


5

78

4.1

3.2 / 0.78 = 4.1

10

64

5.0

3.2 / 0.64= 5.0

15

51

6.3

3.2 / 0.51 = 6.3

20

42

7.6

3.2 / 0.42 = 7.6

25

39

8.2

3.2 / 0.39 = 8.3

30

38

8.4

3.2 / 0.38 = 8.4

35

37

8.6

3.2 / 0.37= 8.6

40

37

8.6

3.2 / 0.37= 8.6

45

36

8.9

3.2 / 0.36 = 8.9



Class A Manual

How do I correct a flow splitting issue into a clarifier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

Random Flow Spli er: No weirs, no flow control.

Proper Flow Spli er: Overflow weirs of equal length. Ohio Environmental ProtecƟon Agency



Class A Manual

How do I eliminate a density current within a clarifier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³KLW´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³ZURQJVLGHRIWKHVNLPPHU Ohio Environmental ProtecƟon Agency



Class A Manual

How do I correct effluent weirs which are causing solids loss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




Class A Manual

How do I calculate the SOR in the clarifier? 7KH6XUIDFH2YHUIORZ5DWH625 LVDGHVLJQFULWHULDIRUFODULILHUV7KHQXPEHULVFDOFXODWHGE\GH WHUPLQLQJWKHSHDNIORZUDWHLQWRWKHFODULILHUJDOORQVSHUGD\ DQGWKHQGLYLGLQJWKDWQXPEHUE\WKH FODULILHUVXUIDFHDUHDVTXDUHIHHW 7KHVLJQLILFDQFHRIWKHVXUIDFHRYHUIORZUDWHLVWKDWLWSURYLGHVDQXPHULFYDOXHIRUWKHK\GUDXOLFFD SDFLW\RIDFODULILHU,QDFODULILHUVXVSHQGHGVROLGVVHWWOHZLWKDGRZQZDUGYHORFLW\%XWFOHDUZDWHU LVIORZLQJXSZDUGWRZDUGWKHHIIOXHQWZHLUDWWKHVDPHYHORFLW\WKDWWKHPL[HGOLTXRUHQWHUVWKHFODU LILHU7KLVUHVXOWVLQRSSRVLQJIORZV,IWKHXSZDUGIORZUDWHRIWKHFOHDUZDWHULVJUHDWHUWKDQWKH VHWWOLQJVOXGJHIORZUDWHRIWKHPL[HGOLTXRUWKHQVROLGVFDQEHFDUULHGRYHUWKHZHLULQWRWKHHIIOX HQWWURXJK,IWKHVHWWOLQJVOXGJHYHORFLW\LVJUHDWHUWKDWWKHXSZDUGYHORFLW\RIWKHHIIOXHQWWKHQ WKHUHVKRXOGEHQRVROLGVORVV )RUH[DPSOHDSDFNDJHSODQWFODULILHUPD\KDYHVXUIDFHGLPHQVLRQRIIHHWZLGHE\IHHWORQJ 7KHFODULILHUVXUIDFHDUHDZRXOGEH 6 ft x 15 ft = 90 ft2 ,IWKHGHVLJQSHDNIORZWRWKHFODULILHULV40,000 gallons per dayWKHQ SOR

=

40,000 gpd 90 ft

2

= 444 gpd/ft2

)RUVPDOOSDFNDJHSODQWFODULILHUVWKHPD[LPXPGHVLJQVXUIDFHRYHUIORZUDWHLVW\SLFDOO\² JSGIW)RUODUJHUFODULILHUVZLWKDFWLYHVOXGJHVFUDSHUVWKHGHVLJQVXUIDFHRYHUIORZUDWHLVXVXDOO\ JSGIW.




Class A Manual

How do I calculate the solids loading rate in the clarifier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ft x 15 ft = 90 ft2 7KHGHVLJQPDVVLQWRWKHFODULILHUFDQEHFDOFXODWHGE\PXOWLSO\LQJWKHPL[HGOLTXRUVXVSHQGHGVROLGV FRQFHQWUDWLRQE\GHVLJQSHDNLQIOXHQWIORZUDWHSOXVWKHSHDNGHVLJQUHWXUQVOXGJHIORZUDWHDQG WKHQPXOWLSO\LQJE\WKHFRQYHUVLRQIDFWRURI )RUH[DPSOH

0/66 PJ/

&ODULILHU,QIOXHQW)ORZ 0*'

5$6)ORZ 0*'

lb/d of solids

SLR

=

=

3000 mg/L MLSS x 0.080 MGD x 8.34 = 2002 lb/d 2002 lb 90 Ō

2

= 22.2 lbs/d/ ft2

)RUVPDOOSDFNDJHSODQWFODULILHUVWKHOLPLWLQJGHVLJQVROLGVORDGLQJUDWHLVOEVGD\IW )RUODUJHU FODULILHUVZLWKDFWLYHVOXGJHVFUDSHUVWKHGHVLJQVROLGVORDGLQJUDWHLVXVXDOO\OEVGD\IW



Class A Training Manual - Ohio EPA

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