Method of treating effluents containing sulfur oxides

Details Method of treating effluents containing sulfur oxides Method of treating effluents containing sulfur oxides

1985-03-21

1986-04-22

Heller, Gregory A.

Liquid purification or separation

Processes

Chemical treatment

423242, C02F 128, C01B 1700

Patent

active

045841071

ABSTRACT:
A method of treating effluents containing sulfur oxide ions, such as sulfite ions, thiosulfate ions, thionate ions and bisulfite ions, comprises blowing ozone-containing air into the effluent to reduce the COD level in the effluent to 6 mg/l or below, and neutralizing the so treated effluent with an alkali. This method is capable of producing neutral effluents with small equipment and within a short period of time, and the treated effluent will not experience an appreciable drop in the pH even if it is left to stand for a prolonged period.

REFERENCES:
patent: 2795544 (1957-06-01), Williams et al.
patent: 4024220 (1977-05-01), Ostroff et al.
patent: 4166838 (1979-09-01), Tatani et al.
patent: 4255257 (1981-03-01), Greiner et al.

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