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Village of Kingsley WWTP

Operation, Maintenance and Management

Began Operation June 2005Began Operation June 2005

First Aero-Mod System in Michigan

C ti Fl PContinuous Flow Process

Two Stage Extended Aeration Process

Groundwater Discharge

Design Flow: 0.200 MGD

Design Loading

BOD5: 240 mg/l

Ammonia-N: 30 mg/lAmmonia N: 30 mg/l

C rrent A erage Flo 0 100 MGDCurrent Average Flow: 0.100 MGD

Maximum: 0.123 MGD

Minimum: 0.089 MGD

Influent Characteristics

•BOD5: 180 mg/l5

•COD: 250 - 500 mg/l

•TSS: 100 – 160 mg/lTSS: 100 160 mg/l

•T. Phosphorus: 4.5 – 6.5 mg/l

Ammonia N 25 46 mg/l•Ammonia-N: 25 – 46 mg/l

•Temperature: 6 - 22° C

Effluent Permit Parameters

•TIN: 5 mg/l

•Sodium: 150 mg/l

•Chloride: 250 mg/lChloride: 250 mg/l

Monitor Well Permit ParametersMonitor Well Permit Parameters

•T. Phosphorus: 1 mg/l

Start Up Issues

•Influent BOD5 was lower than expected5

•Process achieved complete nitrification

•Not enough BOD5 remaining to denitrify to lessNot enough BOD5 remaining to denitrify to less than 5 mg/l

•We expected we would need to add BOD5(ethylene glycol) to the influent

•Discussed the problem with Aero-Mod Process Engineer Todd Steinbach

•Aero-Mod came up with a fix using automatic valve modification that alternates the first and second stage aerationg

•Aero-Mod provided the valves

•WTOS provided the labor to complete the•WTOS provided the labor to complete the modification

Effluent Range

BOD5: <10 - 20 mg/l5

COD: 50 - 90 mg/l

TSS: 4 – 12 mg/lTSS: 4 12 mg/l

T. Phosphorus: 0.7 – 2.0 mg/l

TIN 0 2 4 5 mg/lTIN: 0.2 – 4.5 mg/l

Sodium: 60 - 150 mg/l

Chlorides: 110 – 220 mg/l

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