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Bactericidal effects of algae on enteric organisms
1970
Davis, Ernst M. | Gloyna, Earnest F.
Use of Fungi Imperfecti in waste control
1970
Church, Brooks D. | Nash, Harold A.
Aerated lagoon treatment of sulfite pulping effluents
1970
Amberg, Herman Robert | Aspitarte, T. R. | Coma, J. G. | Byington, K. | Ehli, J.
Weak washwater from a pulp mill, evaporator condensate from the spent liquor recovery system, and paper machine white water effluents were treated over a 17 month period in a secondary treatment plant consisting of 2 aeration basins. One basin was equipped with two 75 hp aerators and the other with six 25 hp aerators. Piping was designed to permit series and parallel operation of the two basins, and provisions were made to recycle treated waste. Series operation was superior to parallel operation for the wastes treated. The two 75 hp aerators were much more efficient in both mixing and aeration capacity than the smaller 25 hp units. An 80% BOD reduction in the system was achieved at a loading of 2.2 lbs BOD/hp-hr equivalent to a daily load of 16,000 lbs BOD. Total operating costs are discussed.
Показать больше [+] Меньше [-]Air quality criteria for carbon monoxide
1970
Relationship between concentration of carbon monoxide in the air and its adverse effects on man and the environment.
Показать больше [+] Меньше [-]Feasibility of computer control of wastewater treatment
1970
In-sewer fixed screening of combined sewer overflows
1970
Feuerstein, D. L.
Field sampling and measuring were conducted in conjunction with laboratory investigations on the characterization of combined sewage and the effects of solids removal on chlorination practices. Sixty combined sewage bulk samples and 60 combined sewage screenings samples retained on screens of 0.125-, 0.25-, 0.5-, and 1.0 in. aperture were analyzed and evaluated. Removals of deoxygenating materials, oils and greases, and bacteria by fixed screens placed in combined sewers were marginal. Reductions in chlorine requirements as a result of prior solids removal by fixed screening appear small. Screens with aperture sizes ranging from 0.0164 to 1.0 in. appear to have very little effect on bacterial concentrations.
Показать больше [+] Меньше [-]Control of infiltration and inflow into sewer systems
1970
Treatment techniques for removing phosphorus from municipal wastewaters
1970
Convery, John J.
Joint treatment of municipal sewage and pulp mill effluents
1970 | 1972
Voelkel, K. G. | Deering, R. W. | Wilms, L. R.
Toxic action of water soluble pollutants on freshwater fish
1970
Fromm, Paul Oliver
