| Abstract |
| Comparative of dry oyster shell and calcined oyster shell in the phosphorus removal rate study that used waste oyster shell, phosphorus removal rate of pH change, cohesion experiment. used a column and studied a phosphorus and organic removal rate at A20 processes to have been included in phosphorus reactor tank. Result of research is as follows. Phosphorus removal rate appeared high more, small particle size, lot input quantity, removal rate was confirmed more dry oyster shell to high things at calcined oyster shell in batch reactor experiment. A removal rate pH is high and to have risen in experiment along a pH change appeared high. the phosphorus removal rate that a dry oyster shell was higher looked at calcined oyster shell. Phosphorus removal rate appeared high to an oyster shell to activated sludge process, floc formation and precipitation rate was proved low to be compare with cohesion experiment. Therefore, be thought phosphorus reactor so that it is desirable that installs it to the biological process latter part. Surface area increases in the experiment that used column included it, and phosphorus removal rate appeared high. Appeared by a degree in 8-10 days maintenance of cohesion in time. Average concentration of influent to phosphorus reactor was 1.765mg/1 and average concentration of effluent appeared to 0.257mgll in A20 processes. Appeared in biological experiment so that phosphorus removal rate was high. |
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| Key Words |
| dry oyster shell, calcined ouster shell, phosphorus removal, precipitation rate |
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