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 Continuous Flow Process ti Fl P Two Stage Extended Aeration Process Groundwater Discharge

Design Flow: 0.200 MGD Design Loading BOD 5 : 240 mg/l Ammonia N: Ammonia-N: 30 mg/l 30 mg/l C rrent A erage Flo Current Average Flow: 0 100 MGD 0.100 MGD Maximum: 0.123 MGD Minimum: 0.089 MGD

Influent Characteristics • BOD 5 : 180 mg/l 5 • COD: 250 - 500 mg/l • TSS: TSS: 100 – 160 mg/l 100 160 mg/l • T. Phosphorus: 4.5 – 6.5 mg/l • Ammonia-N: Ammonia N 25 25 – 46 mg/l 46 mg/l • Temperature: 6 - 22° C

Effluent Permit Parameters • TIN: 5 mg/l • Sodium: 150 mg/l • Chloride: Chloride: 250 mg/l 250 mg/l Monitor Well Permit Parameters Monitor Well Permit Parameters • T. Phosphorus: 1 mg/l

Start Up Issues • Influent BOD 5 was lower than expected 5 • Process achieved complete nitrification • Not enough BOD 5 remaining to denitrify to less Not enough BOD 5 remaining to denitrify to less than 5 mg/l

• We expected we would need to add BOD 5 (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 BOD 5 : <10 - 20 mg/l 5 COD: 50 - 90 mg/l TSS: TSS: 4 – 12 mg/l 4 12 mg/l T. Phosphorus: 0.7 – 2.0 mg/l TIN TIN: 0 2 0.2 – 4.5 mg/l 4 5 mg/l Sodium: 60 - 150 mg/l Chlorides: 110 – 220 mg/l

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