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9 Cards in this Set
- Front
- Back
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The _____ and ______ ______ combine to make up mixed liquor. If there is no primary treatment MLSS is the combination of ______ and ______ _____. |
RAS and primary effluent. RAS and influential wastewater. |
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Log growth.... |
Usually has high CBOD5 and a low MLSS concentration. Meaning that the F/M ratio is high and the SRT is low (below 3 days). |
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Convenional aeration should have..... |
*F/M of about 0.2 to 0.5. *SRT of about 5 to 15 days. *Concentration of about 2,000 to 3,000 ppm. |
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In extended aeration _______ ______ is at it's porest. |
Oxygen utilization |
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In ______ _____ oxygen utilization is at it's most optium and bugs are at there most ________ state. |
Log growth, active |
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In contact stabilization the growth phase could be in ______ _____ to _____ _______ in the stabilizer tank depending on the MLSS, F/M, and SRT. |
Declining growth, endogenous respiration. |
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In contact stabilization the RAS flows through the aeration tank and is reaerrated and displaced into the contact tank. The aeration tank is called the ______. |
Stabilizer tank. |
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Step feed aeration mode |
Combines influential and RAS than disperses it across the length of the tank. Diluting the demand for oxygen throughout the tank |
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When ____ and _______ is at its highest the sludge yield and growth rate of heterotrophs is at its highest. |
DO and F/M |
