분말 폐굴껍질을 이용한 정수슬러지의 탈수 개선방안

• 영문명: The Study on the Dewaterability Improvement of Water Treatment Sludge Using Powdered Waste Oyster Shells
• 발행기관: 한국환경보건학회
• 저자명: 문종익 최성문 임영석 성낙창 김철 곽영규
• 간행물 정보: 『1. 한국환경보건학회지』제27권 제2호, 17~21쪽, 전체 5쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2001.06.30

영문 초록

The object of this study is to find out the characteristics of waste oyster shells and determine the proper dosage of powdered waster oyster shells as the conditioning agent for water treatment sludge dewatering process. The large amount of waste oyster shells which discharges from the oyster farming, occurs serious environmental hazards. However, oysters shell contain large amount(about 38% by weight) of alkaline minerals, such as calcium and magnesium and so on, this natural material is thought to have the petential ability as a good conditioning agent. The results of this study are as follows. The optimum condition for improvement of the water treatment sludge dewaterability is when 6 g of waste oyster shell powder added to 200ml of water treatment sludge. At optimum condition, the solid contents can reach to 31.78% and the specific resistance of conditioned sludge is 0.16x108 sec2/g. However, exceeding the of powdered waste oyster shell is needed to get the effective result. Consequently, the waste oyster shell can be a recyclable material to improve the dewaterability of water treatment sludges.

키워드

Powdered waste oyster shells water treatment sludge dewaterability