Method and apparatus for controlling sludge flocculant flow

Details Method and apparatus for controlling sludge flocculant flow Method and apparatus for controlling sludge flocculant flow

1988-07-25

1989-09-19

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210745, 210783, 210 86, 210104, 210203, 210330, 210401, 210744, B01D 3322

Patent

active

048678864

ABSTRACT:
The flow of waste water sludge flocculant to a dewatering system is regulated by a surface proximity sensor located downstream of the flocculant addition point. Depth, variability and continuity of a partially drained sludge mat are evaluated by a depth sensor signal processor/analyzer. Signal characteristics representative of an optimally flocculated sludge mat are referenced by the processor/analyzer to establish high and low control set-point values. A variable speed flocculant supply pump or flow control valve is adjusted in response to an operational signal from the depth sensor which exceeds the set-point range.

REFERENCES:
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patent: 4053234 (1977-10-01), McFarlane
patent: 4181616 (1980-01-01), Bahr
patent: 4341628 (1982-07-01), Fujinami et al.
patent: 4587023 (1986-05-01), Srivatsa et al.
patent: 4612123 (1986-09-01), Eustacchio et al.
patent: 4707272 (1987-11-01), Kistler
patent: 4824581 (1989-04-01), Cooper

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