Process for preventing the formation of black spots on the walls

Details Process for preventing the formation of black spots on the walls Process for preventing the formation of black spots on the walls

1996-09-25

1998-02-03

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210702, 210912, C02F 152

Patent

active

057140766

ABSTRACT:
A method for preventing the formation of black marks on the walls of sunken pools containing water contaminated by copper ions, which consists in treating the water using an effective amount of a metal sulfide having a water solubility at least equal to the solubility of copper sulfide. The treatment reduces the concentration of copper ions in the water and prevents the formation of black marks on the walls.

REFERENCES:
patent: 2220667 (1940-09-01), Travis
patent: 3544476 (1970-12-01), Aiba et al.
patent: 4070281 (1978-01-01), Tagashira et al.
patent: 4102784 (1978-07-01), Schlauch
patent: 4414115 (1983-11-01), The
patent: 5279748 (1994-01-01), Hackett

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