フェノール性工場廃水の活性汚泥法

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The authors studied the treatment of industrial phenolic waste from a coke oven using activated sludge especially from the kinetic point of view.It is necessary to acclimagte the activated sludge to industrial waste for about two to three weeks. Though pH of the waste was not ajusted, threre was little effect on the treatment of the waste. Determining the phenol load in an aeration tank, the relationships between aeration times and phenol concentration, and sludge concentration were found as follows in flask tests as well as in bench-scale continuous treatment tests. θ=0.18(y_0)/(S_a) θ : aeration times (hr.) y_o : initial phenol concentration (ppm) S_a : average sludge concentraion for aeration times (separated sludge volume per cent with 1600G centrifugal separator) If 120 ppm phenolic waster are added and 6% sludge concentration are placed in an aeration tank, retention times are caluculated by above equation.The produced sludge were caluculated as follows ΔS=0.23y-0.0962S'_a ΔS : produced sludge per day (dry matter) (mg) y : removed phenol (mg) S'_a : avarage mixed liquor suspended solid (mg) If total oxidation, namely non produced sludge operation is desired, the phenol load can be caluculated by above equation as ΔS=0.
社団法人日本生物工学会の論文
1965-03-25