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KMID : 0382420010270030099
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Korean Journal of Environmental Health Society
2001 Volume.27 No. 3 p.99 ~ p.106
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Phosphorus and Nitrogen Removal from Synthetic Wastewater by Intermittently Activated Sludge combined with Aluminium Corrosion
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Cheong Kyung-Hoon
Jung Oh-Jin
Choi Hyoung-Il
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Abstract
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A laboratory experiment was performed to investigate phosphorus and nitrogen removal from synthetic wastewater by intermittently activated sludge process packed with aluminium plate. Three continuous experimental systems, i. e. an intermittently activated sludge process(Run A), an intermittently activated sludge process with an aluminium plate packed into the reactor(Run B), and a reactor post stage(Run C) were compared.
In the batch experiments, the phosphorus removal time in the reactor packed with copper and aluminium plate simultaneously was faster than that of the reactor packed with only an aluminium plates.´ However, the reactor packed with only an aluminium plate could be used for phosphorus removal. More phosphorus was removed with an increase of surface area of aluminium plate and electrolysis(NaCl) concentration. The efficiency of COD and nitrogen removal was not affected in Run B. However, the phosphorus removal efficiency decreased because of reaction products and activated sludge which gradually covered gradually the surface of the aluminium plate. The efficiency of phosphorus removal in Run C was 86.3% at the HRT of 3.2 hours. Especially, the efficiency of phosphorus removal in Run C was higher than that in Run B.
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