System and method to control laundry waste water treatment

Details System and method to control laundry waste water treatment System and method to control laundry waste water treatment

1994-12-02

1996-07-02

Drodge, Joseph W.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210 961, 2101981, 210746, B01D 2132, B01D 2101

Patent

active

055319050

ABSTRACT:
A system and method are disclosed for controlling the amount of cationic coagulant to be introduced into a laundry waste water having a content of non-solid fats, oils and/or grease (FOG) which is to be reduced. This system comprises a detector, located upstream from the introduction of cationic coagulant and upstream of the reduction of FOG level, adapted to determine the electric charge value of a material comprising the laundry waste water having a non-solid FOG level which is to be reduced, and being substantially free of cationic coagulant, and to provide a signal indicative of this electric charge value and an automatic processor provided with a relationship of the amount of cationic coagulant to be introduced into the material to reduce the non-solid FOG level to a given level as a function of the signal, and adapted to receive the signal and to provide a control signal to a source of cationic coagulant to control the amount of cationic coagulant introduced from the source of cationic coagulant into the material.

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"An On-Line Monitor for Flocculation Control", Brown et al, pp. 239-245, Undated.

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