Village of Kingsley WWTP Operation, Maintenance and Management - - PowerPoint PPT Presentation

Village of Kingsley WWTP Operation, Maintenance and Management

Began Operation June 2005 Began Operation June 2005 First Aero-Mod System in Michigan C ti Fl P Continuous Flow Process Two Stage Extended Aeration Process Groundwater Discharge

Design Flow: 0.200 MGD Design Loading BOD5: 240 mg/l Ammonia-N: 30 mg/l Ammonia N: 30 mg/l C rrent A erage Flo 0 100 MGD Current Average Flow: 0.100 MGD Maximum: 0.123 MGD Minimum: 0.089 MGD

Influent Characteristics

• BOD5:

180 mg/l

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• COD:

250 - 500 mg/l

• TSS:

100 – 160 mg/l TSS: 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/l Chloride: 250 mg/l Monitor Well Permit Parameters Monitor Well Permit Parameters

• T. Phosphorus:

1 mg/l

Start Up Issues

• Influent BOD5 was lower than expected

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• Process achieved complete nitrification
• Not enough BOD5 remaining to denitrify to less

Not 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 aeration g

• 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/l

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COD: 50 - 90 mg/l TSS: 4 – 12 mg/l TSS: 4 12 mg/l

• T. Phosphorus:

0.7 – 2.0 mg/l TIN 0 2 4 5 mg/l TIN: 0.2 – 4.5 mg/l Sodium: 60 - 150 mg/l Chlorides: 110 – 220 mg/l

Question and Answ er

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