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JANUARY 1949 Number
Efficiency Studies of a Shallow Recirculating Sewage Filter By W A MooRE
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acid activated sludge aeration ammonia Asst average B.O.D. removal bacteria Bldg Calif cent Chem chemical chlorine City Engr Committee concentration Cons Corp cost Dept digestion dilution discharge disposal Dist effect effluent Engineering equipment Federation ferric chloride filtration flow grease hydrogen sulfide increase industrial wastes liquor loading ment method nitrification º º Ohio Ohio Ohio River operation organic oxygen P. O. Box period phenol problem production protozoa Public Health pump recirculation River Sales Engr samples sanitary Sanitary Engineer scouring settling tank sewage treatment plant Sewage Works Association sewer slime sludge digestion stream pollution sulfate sulfide sulfuric acid Supt suspended solids Tenn tests tion trickling filter volatile Wash waste treatment Water and Sewage