TREATMENT OF ORGANIC WASTE WATER CONTAINING COLORED SUBSTANCE

摘要

PURPOSE:To separate and remove COD components resulting from undecomposed colored substances by anaerobically and then aerobically treating waste water contg. high-concn. BOD components and colored substances which are hardly decomposed by microbes and then passing the waste water through a reverse osmosis membrane. CONSTITUTION:For example, waste water such as alcohol distillation waste soln. contg. hhigh-concn. BOD components and colored substances which are hardly decomposed by microbes is anaerobically and then aerobically treated to decompose and remove the greater part of the BOD components. Then the SS components in the waste water are removed by prefiltration, etc., using a precision filter membrane. The waste water is then passed through a reverse osmosis membrane to separate and remove COD components resulting from undecomposed colored substances. Consequently, the waste water contg. high- concn. BOD components and colored substances which are hardly decomposed by mirobes can be efficiently treated.