공극개선재의 혼합비율에 따른 제지 • 하수슬러지의 퇴비화과정중 이화학성 변화

• 영문명: Changes of Physicochemical Properties of Paper MiII Sludge and Sewage Sludge Mixed with Various Ratios of a Bulking Agent During Composting
• 발행기관: 유기성자원학회
• 저자명: 유영석(Young-Suk Yu) 장기운(Ki-Woon Chang)
• 간행물 정보: 『유기물자원화』제6권 제2호, 45~57쪽, 전체 13쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1998.12.30

영문 초록

The object of this experiment was to determine the optimum mixing ratio of paper mill sludge and sewage sludge with woodchips as a bulking agent. ’The bulking agent was mixed with the mixture of paper mill sludge and sewage sludge(2 : 1 by dried weight) at the rates of O(W애)， 20(W-20). 33(W-33), and 50(W-50)% on volume basis. and then the mixtures were composted by forced aerated static pile. The changes of physicochemical properties of the mixtures were measured during the composting in order to evaluate the maturity of composts. The temperatures of W-30 and W-50 treatments increased rapidly as soon as the composting started. and reached 60t in the fifth day of composting. Reduction of hot water soluble C/N ratio of W-33 and W-50 treatments showed faster than that of W-0 and W-20 treatments at early stage of composting. The contents of hot water soluble NO3-N showed little change in the early stage of the composting in all treatments. but increased rapidly after 20 days of the composting. and the contents of W-O among all treatments were lower than the others. The G. 1. values of W-50 treatment were over 80 before 20 days after starting the composting. those of W-O treatment were over 80 after 30 days. As a result of evaluation of compost. W-33 and W-50 treatments were found very reasonable at the mixing ratio of a bulking agent. But it is verγ difficult to aerate compost pile for W-50 treatment than W-33 treatment due to intensified fluctuation of temperature. Considering cost. avai1ability of a bulking agent. and productivity of compost. W-33 treatment is more efficient than W-50 treatment.

목차

1. 서 론

2. 실험재료 및 방법

3. 결과 및고찰

4. 결 론

키워드

공극개선재 목편 퇴비화 B비 king agent Woodchips Composting