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        변형된 혐기 - 호기법을 이용한 폐수처리에 관한 연구 - 1 . 유기물 농도변화에 따른 영향 -

        박우균,정광용,신응배 ( Woo Kyun Park,Kwang Yong Jung,Eung Bai Shin ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.4

        In most cases, wastewater treatment processes have been developed for the treatment of organic matters and suspended solids. However, the removal of nitrogen and phosphorus from wastewater have attracted little attention. This study seeks a possibility of cost reduction and of simple to operation through a modification of existing processes which have already been well developed. The study was conducted to evaluate removal efficiencies of organic matter, nitrogen and phosphorus which are coexistent in wastewater. The laboratory scale experiment was done in using various concentrations of synthetic wastewater. BOD removal efficiency between modified anaerobic-oxic process and activated sludge process was similar 94.7%, 91.4%, respectively. Nitrogen and Phosphorus removal efficiency were 81.67%, 87.91%, respectively in modified anaerobic-oxic process, but nitrogen and phosphorus removal efficiency in activated sludge process were only 32.88%, 65.17%, respectively. The removal efficiency of organic matter in anaerobic-oxic process with was observed to be 94% regardless of influent concentration of organic matter with of wastewater, and over 80% removal being occurred in anaerobic tank. Nitrogen removal efficiency in nitrogen level of 25, 50 and 75㎎/l of inflow were 43.14, 81.67 and 41.54%, respectively. Higher nitrogen removal efficiency was observed with a higher influent concentration of nitrogen. In case of simultaneous result was not observed. The results demonstrated that the modified anaerobic-oxic process may better be applied to a rural treatment plant for a simultaneous removal of organic matter, nitrogen and phosphorous.

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