정수처리장내 급속모래 여과지의 이단복합여과시스템으로의 개량

• 영문명: Improvement of Rapid Sand Filtration to Two Stage Dual Media Filtration System in Water Treatment Plant
• 발행기관: 한국환경보건학회
• 저자명: 우달식(Dal-Sik Woo) 황규원(Kyuwon Hwang) 김준언(Jooneon Kim) 황병기(Byung-Gi Hwang) 조관형(Kwanhyung Jo)
• 간행물 정보: 『1. 한국환경보건학회지』제37권 제2호, 141~149쪽, 전체 9쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2011.04.30

영문 초록

This study aimed for developing a two stage dual media filtration system. It has a sand and activated carbon layer above the under-drain system, and a sand layer above the middle-drain system for pretreatment. When retrofitting an old sand filter bed or designing a new one, this technology can substitute the existing sand filter bed without requiring a new plant site. The removal rate of total particle is 93, and 3~7 μm and 5~15 μm particles are all 97%. These high removal efficiencies of each pollutant due to adsorption and biological oxidation in activated carbon filter layer. The best backwashing method of two stage dual media filtration system is ascertained by air injection, air + water injection and water injection sequence. In this study, a pilot plant of two stage and dual filtration system was operated for 4 months in water treatment plant. The stability of turbidity was maintained below 1 NTU. The TOC, THMFP and HAAFP were removed about 90% by two stage and dual media filtration system, which is almost 2 times higher than existing water treatment plant.

키워드

Two stage Dual media Filtration GAC DBPs Backwashing