YSI and Saintaire team up to explain measuring nitrification and denitrification rates with the YSI IQ SensorNet in an ICEAS wastewater process.
Text of YSI and Sanitaire nitrification and denitrification in wastewater webinar
1. Measuring Nitrification & Denitrification Rates with YSIs IQ SensorNet in an Intermittent Cycle Extended Aeration SystemVisit us at WEFTEC,booth 6239September 2012
2. Presentation Overview Introduction ICEAS Technology YSI IQ SensorNet Nitrification & Denitrification Rate Calculations Design and Process Control g
3. Introduction Cedar Grove, WI Approximately 40 miles north of Milwaukee. Activated sludge process ICEAS. On-line instruments for nitrification & denitrification rates. Optimize process operations and design with deeper dd i ihd understanding of nitrification & denitrification capacity. 3
4. Cedar Grove, WI Commissioned 2006 Filters Digester ICEAS Reactors Lab L b Sludge Storage Discharge
5. Cedar Grove, WI Commissioned 2006 Influent Conditions Values Average Dry Weather Flow 0.4 mgd (1,515 m 3/day) Peak Wet Weather Flow 1.4 mgd (5,304 m 3/day) BOD5 167 mg/l TSS 297 mg/l NH3-N 23 mg/l P 9 mg/l Effluent Requirements BOD5 10 mg/l TSS 10 mg/l NH3-N 1 mg/l P 1 mg/l ICEAS Process Design Criteria F:M 0.04 1/day Normal Cycle Time 4.8 4 8 hr Number of Basins 2 Basin Length 78.83 ft. (24 m) Basin Width 25.0 ft. (7.6 m) Top Water Level 16.0 ft. (4.9 16 0 ft (4 9 m) Bottom Water Level 12.0 ft. (3.7 m)
6. ICEAS Technology
7. ICEAS - Intermittent Cycle ExtendedAeration SystemPre-React Zone Main React Zone Usually 12-15% of Basin Volume y Aeration Acts as Biological Selector Mixers Discourages Filamentous Growth Decanter Allows for Continuous Flow WAS Pump C ti Continuous S Supply of C b l f Carbon
9. ICEAS Operating Cycle Normal Cycle Operational Sequence (4.8 Hours) 0 24 48 72 96 120 144 168 228 288 AIR OFF AIR ON AIR ON AIR ON **AIR OFF AIR ON AIR ON SETTLE DECANTBasin #1 (24 min Mix) (0-24 min) (0-24 min) (0-24 min) (24 min Mix) (0-24 min) (0-24 min) (60 min) (60 min) 144 168 228 288/0 24 48 72 96 120 144 Storm Cycle Operational Sequence (3.6 Hours)Basin #2 AIR ON (0-24 min) SETTLE (60 min) DECANT (60 min) AIR OFF (24 min Mix) AIR ON (0-24 min) AIR ON (0-24 min) AIR ON (0-24 min) **AIR OFF (24 min Mix) AIR ON (0-24 min) Storm Cycle Operational Sequence (3.6 Hours) 0 18 36 54 72 90 108 126 162 216 AIR OFF AIR OFF AIR ON AIR ON AIR ON AIR ON AIR ON SETTLE DECANTBasin #1 (18 min (18 min (0-18 min) (0-18 min) (0-18 min) (0-18 min) (0-18 min) (45 min) (45 min) Mix) Mix) 108 126 162 216/ 0 18 36 54 72 90 108 AIR ON AIR OFF AIR ON AIR ON AIR ON AIR OFF AIR ON SETTLE DECANTBasin #2 (0-18 (18 min (0-18 (0-18 (0-18 (18 min (0-18 min) (45 min) (45 min) Mix) min) min) min) Mix) min)
10. ICEAS Basin Cross SectionDraw Down Buffer Zone Sludge Blanket Difference Between Typically 3 ft Function of F:M Top and Bottom Acts as Safety Ratio R ti Water Level Factor Function of Occupied by Influent Loading Limited to 1/3 of Sludge Blanket if Target SVI = 150 TWL or Max 6 ft SVI > 150 Function of Peak Flow and Cycle Times Drawdown Buffer Zone Sludge Blanket
11. Probes: Midpoint of Main React Basin
12. YSI Instrumentation
13. What is inside the black box? See whats behind the black box with on line what s on-line monitoring instrumentation.
