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Phosphorus removal by ferrous iron and lime
1971
Alvord, E. Thomas
Spent pickle liquor, as a source of ferric ion, was added to primary treatment facilities and found to be effective in removing more than 60% of the phosphorus contained in the sewage. When advanced means for more complete removal of the insolubilized phosphates are available, removals in excess of 90% are indicated. In addition, overall suspended solids removals averaged 61.5% and BOD and COD removals averaged 61.6 and 55.3 percent during a 23 month test period. Required iron dosage ranged from the theoretical minimum of 2.7 to a maximum of approximately 3.1 weights of ferrous iron per weight of phosphorus. The weight increase in sludge solids due to chemical precipitation of phosphorus was 100 lbs/million gallons/mg/liter of phosphorus in the influent. Total costs for treating a raw sewage containing 13 mg/l phosphorus are given.
اظهر المزيد [+] اقل [-]Complete mix activated sludge treatment of citrus process wastes
1971
Reduction of salt content of food processing liquid waste effluent
1971
Mercer, Walter A. | Ralls, Jack W.
Water and water pollution handbook
1971-1973
Ciaccio, Leonard L.
A predictive model for thermal stratification and water quality in reservoirs
1971
Markofsky, Mark | Harleman, Donald R. F.
Information resource
1971
Faber, H. A. | Nardozzi, A. D.
Induced hypolimnion aeration for water quality improvement of power releases
1971
Leach, Lowell E.
An investigation of techniques for removal of cyanide from electroplating wastes
1971
