Sulfide ion-selective electrodes for control of chemical feed of

Details Sulfide ion-selective electrodes for control of chemical feed of Sulfide ion-selective electrodes for control of chemical feed of

1994-03-23

1995-03-28

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210725, 210727, 210912, 210743, 210746, C02F 162

Patent

active

054014204

ABSTRACT:
A wastewater treatment system and method for chemical precipitation and removal of metals from wastewater in a continuous or batch treatment process includes an ion-selective sulfide electrode and a reference electrode disposed in a precipitation tank for measuring an electrochemical potential therebetween in a predetermined range. A controller unit is provided which is responsive to the electrochemical potential in the predetermined range and is connected to a precipitant feed unit for automatically controlling the chemical precipitant fed into the precipitation tank.

REFERENCES:
patent: 4329224 (1982-05-01), Kim
patent: 4465593 (1984-08-01), Wemhoff
patent: 4724084 (1988-02-01), Pahmeier et al.
patent: 4943377 (1990-07-01), Legare
patent: 5106508 (1992-04-01), Schwitzgebel
patent: 5328599 (1994-07-01), Siefert et al.

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