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26. Why would nitrification be significantly reduced when the oxygen level in an activated sludge system falls to 0.2 milligrams per liter or less? 1.

26. Why would nitrification be significantly reduced when the oxygen level in an activated sludge system falls to 0.2 milligrams per liter or less? 1. Excess nitrite production by ammonia- oxidizing bacteria 2. Lack of alkalinity in the aeration basin 3. Increased mixed liquor volatile suspended solids 4. Oxygen starvation of the nitrifying bacteria Wun 30
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26. Why would nitrification be significantly reduced when the oxygen level in an activated sludge system falls to 0.2 milligrams per liter or less? 1. Excess nitrite production by ammoniaoxidizing bacteria 2. Lack of alkalinity in the aeration basin 3. Increased mixed liquor volatile suspended solids 4. Oxygen starvation of the nitrifying bacteria

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