Ecological issues of liquid manure application | Экологические аспекты использования бесподстилочного навоза
2010
Tivo, P.F. | Krutko, S.M. | Saskevich, L.A. | Gendik, N.A., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Land Reclamation
The Republic of Belarus possesses more then 200 animal breeding complexes, accumulating 19-20 million m3 of liquid manure sewage. During its uncontrolled utilization soil, air and plants pollute with toxins, causing such diseases as salmonellosis, tuberculosis, foot-and-mouth disease and more. Utilization of the liquid manure sewage is carried out by several directions: separating of manure wastes on liquid and solid fractions with the aim of it's usage for agricultural irrigation; removal of liquid manure by auto transport and utilization of the fields; artificial biological clearance of liquid fraction and pumping on sewage dispersal plants. All the methods of liquid manure sewage utilization are analyzed. The crop yield of perennial grasses irrigated with liquid manures from pig complex (per 5 years) is calculated. Dependence of the crop productivity of perennial grasses on nitrogen content of liquid manure sewage is shown. The quality of the crop yield of perennial grasses irrigated with liquid manures from pig complex is evaluated. A principal scheme of biogas unit is presented and analyzed. Economic efficiency of the fermented manure utilization is estimated. Pollution of underground water by liquid manure sewage is displayed. The measures minimizing environment pollution by liquid manure sewage are suggested.
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