特殊産業廃水の微生物処理に関する研究 : (第2報) ニトリル化合物を含む工場廃水の活性汚泥による処理(生物化学工学特集号-I廃液処理)

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The waste from an acrylonitrile industry containing mainly lactonitrile and acrylonitrile were tested by activated sludge in flasks and in continuous 2-desk units. The results were as follows; 1) There was almost no difference between the sludges acclimated for a few weeks with different sludge seeds. The activity of the sludge increased greatly.2) For good activity an aeration ratio to the activated sludge as a K_d value of 3〜5×10^<-7> indicating the oxygen absorption rate was adequate. This K_d value was almost the same as for other industrial wastes.3) It was found from the results of flask tests that the CN loading could be calculated by the next equation, if the reduction was 95 per cent. θ=0.7 (Y_0)/(S_a) θ : aeration times (hr) Y_0 : initial CN concentraiton (ppm) S_a : average sludge concentraiton for aeration times (separated sludge volume percent using a 1600 G centrifugal separator) 4) It was found that 0.21 CN kg/m^3/day loading could each a 98% reduction and 0.25 CN kg/m^3/day loading a 94% reduction in continuous treatment tests. These results were nearly similar to the flask test.5) An addition of peptone or phosphate salts was effective in the treatment of the waste.
社団法人日本生物工学会の論文
1965-06-25