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Closed system waste management for livestock
1971
Ngoddy, Patrick O.
Water and water pollution handbook
1971-1973
Ciaccio, Leonard L.
Design guides for biological wastewater treatment processes
1971
Role of animal wastes in agricultural land runoff
1971
Robbins, Jackie W. D. | Howells, David H. | Kriz, George J.
Twelve typical agricultural areas representing three types of animal waste management techniques--lagooning, direct discharge into streams, and land spreading including pasture and drylot units--were studied to determine the amounts of and factors governing stream pollution from swine, dairy, beef, and poultry production operations. More than 1500 stream and lagoon effluent samples were collected with an automatic sampler developed for the study. The samples were analyzed for bacteria, nutrients, and degradable organics. Hydrological and waste management data were also collected. Study results point to the superiority of land spreading for the disposal of animal wastes.
Mostrar más [+] Menos [-]Studies on effects of watershed practices on streams
1971
The river basin model: chairman and council
1971
Wastewater demineralization by ion exchange
1971
Kreusch, Ed | Schmidt, Kenneth D. (Kenneth Dale)
Utilization of phosphate slimes
1971
Vasan, Srini
Denitrification by anaerobic filters and ponds
1971
Sword, Bryan R.
Surface discharge of heated water
1971
Stefan, Heinz G. | Hayakawa, N. | Schiebe, F. R.
