Toshio Oshida*, Tsuguaki Fukuyasu** and Ken-ichi Kohzaki***

*Laboratory of Animal Health I, School of Veterinary Medicine, Azabu University
**Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University
***Laboratory of Public Health I, School of Veterinary Medicine, Azabu University

+ Correspondence should be addressed to Toshio Oshida:
(1-17-71 Fuchinobe, Sagamihara, Kanagawa 229 Japan)

Abstract

Treatment of animal waste, excreta, urine and cleaning waste water is one of the biggest problems in animal husbandry from the environmental point of view, especially in urban districts. A new way of resolution of this problem in urban districts is that animal waste water can be treated together with waste of residents using public sewerage. Three cases of such treatment in pig farms were surveyed in Kanagawa prefecture. And performance, as well as problems, of the treatment are described in the paper.

Key words: animal waste water, public sewerage, pig farming, environmental protection, effluent disposal