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Résultats 21-30 de 161
Characterization and agricultural utilization of swine waste lagoon effluents.
1980
Wilhelm R.G. | Martens D.C. | Hallock D.L. | Collins E.R. | Kornegay E.T.
This investigation was conducted to determine the elemental composition of effluents from three anaerobic swine waste lagoons and one aerobic swine waste lagoon and to evaluate effects of effluent application on growth of corn (Zea mays L.). Wide variation occurred in the elemental composition of effluents among the four lagoons and among four sampling dates from each lagoon. Use of these effluents as irrigation water would lead to application of a wide range in amounts of nutrients to soil. Effluent application increased corn grain yield on a Woodstown loamy fine sand. This yield increase was attributed to alleviation of moisture stress and to correction of N deficiency.
Afficher plus [+] Moins [-]Composting and disposal of industrial wastewater sludge.
1980
Nese P.A. | Galandak J. | Frederick J.A.
Rapid-infiltration research at Flushing Meadows Project, Arizona [Use of wastewater effluent for irrigation].
1980
Bouwer H. | Rice R.C. | Lance J.C. | Gilbert R.G.
Mechanisms and methods for polymer conditioning of activated sludge.
1980
Novak J.T. | Haugan B.E.
Relationship between organic loading, dissolved oxygen concentration and sludge settleability in the completely-mixed activated sludge process.
1980
Palm J.C. | Jenkins D. | Parker D.S.
Analysis of non-point pollution export from small catchments [Runoff, Occoquan and Four-Mile Run basins, in northern Virginia].
1980
Griffin D.M. Jr. | Grizzard T.J. | Randall C.W. | Helsel D.R. | Hartigan J.P.
Agricultural runoff during a drought period [Dee Creek watershed, Nebraska].
1980
Schepers J.S. | Vavricka E.J. | Andersen D.R. | Wittmuss H.D. | Schuman G.E.
Experience with belt filter presses in the pulp and paper industry [Sludge handling practices].
1980
Miner R.
Bacteriological monitoring of pollution in shellfish: methodological evaluation.
1980
Volterra L. | Aulicino F.A. | Tosti E. | Zicarelli M.
This paper compares three different methods to determine faecal pollution in shellfish. Two of these are related to MPN (Most Probable Number) technique and the last one is a direct count. The different results which may be obtained using these different techniques are shown. The relevance that introduction of the intervalve water may have on the bacterial titres in shellfish is presented. The shellfish utilized in this work came from two location situated in the same bay. Simultaneous analyses on flesh, intervalve water and shellfish growing water show the different microbial titre that these three elements may have at the same time.
Afficher plus [+] Moins [-]Microbiology: detection of bacterial pathogens and their occurrence [Includes livestock].
1980
Reasoner D.J.
