ポリビニルアルコール(PVA)含有廃水の活性スラッジ処理の基礎的条件の検討 : ポリビニルアルコール(PVA)の活性スラッジ処理に関する研究(第1報)

概要

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Basic studies were done on the treatment of polyvinyl alcohol (PVA) by activated sludge. Activated sludges were obtained from CSL waste water and soap waste water or made up from Pseudomonas boreopolis which degrades and assimilates PVA. Activated sludges were acclimated to waste water containing PVA or PVA and starch (their relative concentration was 10 to 3) for about a month and half. Waste water containing PVA or PVA and starch waere treated by these acclimated sludges and TOC(COD) values of treated water were measured. Over 90 per cent of TOC in the waste water was removed by the treatment when COD loadings were 0.2-0.3kg/m^3・day for PVA waste water and 0.3-1.0kg/m^3・day for PVA and starch waste water. Optimum COD loadings were estimated to be 0.5kg/m^3・day for PVA waste water and 1.0〜1.5kg/m^3・day for PVA and starch waste water. The addition of a nitrogen compound and phosphate was essential for the treatment. Production of excess activated sludges was 13-26 per cent based on COD loadings. Possibilities for the treatment of waste water containing PVA by activated sludge were discussed.
公益社団法人日本生物工学会の論文
1973-09-25