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结果 41-50 的 113
Projects [of the] Industrial Pollution Control Branch
1970
Mathematical programming for regional water quality management
1970
Feasibility study manual--mine water pollution control demonstrations | Mine water pollution control demonstrations
1970
Treatment of waste water, waste oil mixtures
1970
Microstraining and disinfection of combined sewer overflows
1970
Glover, George E.
The electro-oxidation of ammonia in sewage to nitrogen
1970
Marincic, Ljiljana
Aerial photographic tracing of pulp mill effluent in marine waters
1970
Burgess, Frederick J. | James, Wesley P.
Proposed combined sewer control by electrode potential
1970
Storm water pollution from urban land activity
1970
Underground coal mining methods to abate water pollution
1970
Wilson, Larry W. | Matthews, Noah J. | Stump, James L.
The report is a review of published information pertaining to the abatement of harmful drainage from underground coal mines. Reviewed are new physical approaches to the problem of interdicting water entry into coal mines. These include land management for surface and sub-surface water diversion, the exploitation of water carrying strata, and new mining methods. Some chemical approaches to abatement reviewed include the use of silica gel solutions underground to prevent acid formation, the use of inert gas in active mines, and the use of new and the refinement of known grouting agents.
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