Exploration on the comprehensive sewage-treating technology in dairy farm

文献类型： 外文期刊

第一作者： Qian, WQ

作者： Qian, WQ;Chen, B;Weng, BQ;Lin, DY;Bao, W;Fang, ZJ;Lu, JS

作者机构：

关键词： milk-cow;pollution;treatment using biogas fermentation

期刊名称：Land and Water Management: Decision Tools and Practices, Vols 1 and 2

ISSN：

年卷期： 2004 年

页码：

收录情况： SCI

摘要： With the development of modern agriculture and the enhancement of human living level, the milk-cow industry has been developed rapidly in China since 21st century. However, a milk-cow makes 25kg of dung each day, the draining sewage from cowshed contains COD 15539mg (.) L-1, BOD 3651 mg (.) L-1, NH3 - N 2298mg (.) L-1 respectively, even removing the cow dung before washing the cowshed. It brings serious problem in environmental pollution. In order to solve the contradictory between development and environment, A technological route was put forward to control the sewage pollution in dairy farm by using biogas fermentation, i.e. the sewage is anaerobically fermented by mesophilous bacteria, the dung residues which were separated into sold and liquid parts, the sold used to produce organic manure, and the biogas liquid used to produce the non-harmful fruits and vegetables, thus the waste materials become an useful ones after the comprehensive utilization, zero-draining of pollution and good ecological recycling will be realized. So the comprehensive benefits will be attained in environment, ecosystem and energy utilization.

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