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Optimum Depth and Volume Ratio of Aerobic to Anaerobic Bed for Development of Small-Scale Sewage Treatment Apparatus by Natural Purification Method
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 Title & Authors
Optimum Depth and Volume Ratio of Aerobic to Anaerobic Bed for Development of Small-Scale Sewage Treatment Apparatus by Natural Purification Method
Seo, Dong-Cheol; Park, Mi-Ryoung; Kwak, Nae-Woon; Hwang, Ha-Na; Lee, Hong-Jae; Cho, Ju-Sik; Heo, Jong-Soo;
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 Abstract
To develop small-scale sewage treatment apparatus for detached house of agricultural village, a small-scale sewage treatment apparatus by natural purification method that consisted of aerobic and anaerobic bed was constructed. To reduce the area of a sewage treatment apparatus, four different fitter media were used and each filter medium was coarse sand, broken stone, steel slag, and mixed fitter media (coarse sand : broken stone : steel slag = 1:1:1). The efficiency of sewage treatment according to the depth of aerobic and anaerobic bed and the volume ratio of aerobic to anaerobic bed were investigated in small-scale sewage treatment apparatus. The removal rate of pollutants according to the depth of aerobic and anaerobic bed in small-scale sewage treatment apparatus was high in the order of 50 cm < 70 cm < 90 cm. The removal rate of pollutants according to the ratio of aerobic to anaerobic bed in small-scale sewage treatment apparatus was high in the order of 1:1 < 1:2 1:3. Under the optimum conditions, removal rate of BOD, COD, SS, T-N and T-P were respectively, in small-scale sewage treatment apparatus.
 Keywords
natural purification method;sewage treatment apparatus;depth;volume ratio;aerobic bed;anaerobic bed;coarse sand;broken stone;steel slag;mixed filter media;
 Language
Korean
 Cited by
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