خيارات البحث
النتائج 21 - 27 من 27
Federal pollution control programs: water, air, and solid wastes
1969
Degler, Stanley E. | Bloom, Sandra C.
Use of mathematical models in water quality control studies
1969
Goodman, Alvin S.
The cost of clean water and its economic impact
1969-9999
Collected papers regarding nitrates in agricultural waste waters
1969
A study of flow reduction and treatment of waste water from households
1969
Bailey, James R. | Benoit, Richard J. | Dodson, John L. | Robb, James M. | Wallman, Harold
This study was conducted to find practical means of waste flow reduction or waste treatment for the ordinary household. Present water quality and quantity requirements were reviewed to determine the areas where better water and waste management would be most beneficial. Homeowners, plumbers, architect-engineers, and equipment manufacturers were surveyed to obtain representative opinions from the people who would control the use of any flow reduction or treatment schemes. The results of the study and the consumer survey show that the water used in household functions such as bathing and toilet flushing can be substantially reduced by the use of more efficient appliances and plumbing devices. The use of most advanced waste treatment techniques and the reuse of waste waters is not considered practical except for cases of unusual problems and extremely high water or waste disposal costs.
اظهر المزيد [+] اقل [-]An illustrated key to the British freshwater ciliated protozoa commonly found in activated sludge
1969
Curds, Colin Robert
Public works for water, pollution control, and power development, and Atomic Energy Commission appropriations for fiscal year 1970 | AEC and public works appropriations, 1970
1969-9999
