System using sulfide ion-selective electrodes for control of che

Details System using sulfide ion-selective electrodes for control of che System using sulfide ion-selective electrodes for control of che

1993-03-08

1994-07-12

Hruskoci, Peter A.

Liquid purification or separation

Constituent mixture variation responsive

210101, 210143, 210199, 210202, 210206, 2102571, 364502, C02F 154

Patent

active

053285999

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
patent: 4943377 (1990-07-01), Legare
patent: 5106508 (1992-04-01), Schwitzgebel

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