Control method for quantity of activated sludge
专利汇可以提供Control method for quantity of activated sludge专利检索，专利查询，专利分析的服务。并且PURPOSE: To secure an adequate quantity of activated sludge in the system and to stably treat with a high efficiency, by controlling surplus quantity of sludge of sewage to be treated by the activated sludge method in accordance with the total quantity of treated sewage of previous day and the quantity of inflow sewage at present.
CONSTITUTION: Total quantity of surplus sludge to be drawn out to-day is found by the deflection from the aimed value of the concentration of the liquid mixtue in the aeration vessel of yestenday at the sewage treatment by the activated sludge method. When the total quantity of treated sewage of the previous day is lower than prescribed value on the holiday etc., said value is revised by the coefficient given by the relation of the total quantity of treated sewage of the previous day and its changed part is eliminated. Also, on occasion of exceeding the quantity of inflow sewage at present over the upper limit value, decided value of draw out quantity at present, is revised by the coefficient given by the function of the amount of the inflow sewage at present and the draw out quantity of the surplus sludge, is controlled. Control standard of generating quantity of surplus sludge of the day, can be allowed to follow to the time change of a day etc., by assembling thus operating part in treating apparatus and the draw out control of the surplus sludge is automated.
COPYRIGHT: (C)1981,JPO&Japio，下面是Control method for quantity of activated sludge专利的具体信息内容。
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