굴껍질을 이용한 하수슬러지의 탈수특성에 관한 기초연구

• 영문명: The Characteristics of Municipal Wastewater Sludge Dewatering Using Oyster Shell Powder
• 발행기관: 한국환경보건학회
• 저자명: 신남철 문종익 정유진 장혜정 성낙창
• 간행물 정보: 『1. 한국환경보건학회지』제26권 제2호, 30~33쪽, 전체 4쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2000.06.30

영문 초록

The objective of this study is to examine the subsitiution effect of the waste oyster shell powder as the conditioning agent in municipal wasterwater sludge dewatering process. Beacuse the oyster shells have a large amount(about 38% by weight) of alkaline minerals, such as calcium and magnesium, they are thought to have the potential as a good conditioning agent. In this study, the physico-chemical properties of powdered oyster shells (75 or 200 mesh) and the dewatering characteristics of municipal waste water sludge using powdered oyster shells and CaCO3 are investigated. The conclusions are as follows, 1. Oyster shell could produce calcium ions up to 14ppm at pH-7.0, and this represents that oyster shell is a potential properties as a good conditioner. 2. 100ml of wastewater sludges, conditioned with pretreated oyster shell, are dewatered to the level of 25% solid concentration. 3. Wasterwater sludges, conditioned with oyster shell and CaCO3 are dewatered to the level of 32% solid concentration. And this shows that two-stage combined conditioning process is desirable than the one-stage conditioning process.

목차

Powdered oyster shell;Conditioning agent;Municipal wastewater sludge