The Activated Sludge Process of Sewage Treatment a Bibliography of the Subject
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Chem. Ind. 39, 347 A. Chem. Abst. 14, 2388.
Chem. & Met. Eng'rg. 23, 440. During the first few minutes of contact of raw sewage with activated sludge, there is a considerable reduction in am- monia without a corresponding increase in nitrate N, which shows a marked increase only after one hour. The phenomenon is less appreciable if old sludge is used, and in this case, if aeration is prolonged excessively, there results a decomposition of the sludge with production of nitrate. The effects of ae...rating ammonia-free water in the presence of washed activated sludge for a period of several days, was to reduce its volume from 500 to 50 cc. , and to produce in the liquid 360 mg. Nitrogen trioxide. The sludge was found to be entirely inactivated. In the presence of activated sludge nitrification is most rapid between 20 and 25 C. Aeration for 2 hours are required as compared with 15 hours at C. And 4 hours at 5 C. Above 30 C. Nitrate is produced in very slight amounts, and at 37 C. (optimum temperature for nitrification in pure culture) only a trace of nitrate is formed and there is The Activated Sludge Process no clarification of the sewage.
What to read after The Activated Sludge Process of Sewage Treatment a Bibliography of the Subject?
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To quickly assess the difficulty of the text, read a short excerpt:
Chem. Ind. 39, 347 A. Chem. Abst. 14, 2388.
Chem. & Met. Eng'rg. 23, 440. During the first few minutes of contact of raw sewage with activated sludge, there is a considerable reduction in am- monia without a corresponding increase in nitrate N, which shows a marked increase only after one hour. The phenomenon is less appreciable if old sludge is used, and in this case, if aeration is prolonged excessively, there results a decomposition of the sludge with production of nitrate. The effects of ae...rating ammonia-free water in the presence of washed activated sludge for a period of several days, was to reduce its volume from 500 to 50 cc. , and to produce in the liquid 360 mg. Nitrogen trioxide. The sludge was found to be entirely inactivated. In the presence of activated sludge nitrification is most rapid between 20 and 25 C. Aeration for 2 hours are required as compared with 15 hours at C. And 4 hours at 5 C. Above 30 C. Nitrate is produced in very slight amounts, and at 37 C. (optimum temperature for nitrification in pure culture) only a trace of nitrate is formed and there is The Activated Sludge Process no clarification of the sewage.
What to read after The Activated Sludge Process of Sewage Treatment a Bibliography of the Subject?
You can find similar books in the "Read Also" column, or choose other free books by James Edward Porter to read onlineMoreLess
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