Abstract

생물학적 처리공정의 이차침전지의 고액분리 효율 증대는 전체 시스템 운전의 효율를 증대시키는 것으로 알려져 있다. 하수처리장 방류수 SS는 대부분 유기물질로 구성되어 있어 이차침전지 방류수에서 SS성분을 낮추기 위해서는 이 성분을 구성하는 미세 SS성분을 자체 응집(self flocculation)을 통해서 그 크기와 무게를 증대시켜 이들의 침전을 통해서 제거할 수 있다, 이에 이차침전지내에 이중정류벽 설치를 통한 이차침전지 유출수 부유물질 (SS) 농도 감소를 확인하였고, 유입수의 일간 변화에 의해 하수가 급격히 증가할 경우 유량변동에 따른 충격부하에 의한 유출 부유물질이 안정적으로 처리되는 것을 확인하였다. 따라서 장방향 이차침전지 부유물질 저감을 위해 자체응집을 시킬 수 있는 시설물의 설치가 필요하다. Improvement of the solid-liquid separation efficiency in the secondary sedimentation tank of the biological treatment process, is known to be increasing effectiveness of the overall system operation. Sewage treatment plant effluent SS is composed of most organic substances. In order to reduce the SS component in the secondary sedimentation tank discharge, fine SS components constituting the heterogeneous should be increased by its own aggregation (self flocculation), so that can be deleted through their precipitation. So, it is improved through using the installation of double rectification wall in this secondary tank. In case, sewage is rapidly increased due to the daily change of the influent water, it was confirmed that suspended solids caused by the impact load are processed stably. Therefore, there is a need for a facility installation which can be its own aggregation for reduction suspended solids in secondary sedimentation tank.

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