Continuous process for non-catalytic oxidation of sulfite-contai

Details Continuous process for non-catalytic oxidation of sulfite-contai Continuous process for non-catalytic oxidation of sulfite-contai

1975-11-12

1978-01-03

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

162 36, C02C 504

Patent

active

040665437

ABSTRACT:
Waste water streams containing sulfite and bisulfite ions but substantially no sulfide or thiosulfate ions are treated to convert sulfites to sulfates which can be discharged in receiving streams with no concomitant increase in Chemical or Biological Oxygen Demand. The process is a non-catalytic oxidation effected at 25 to 50 psi, 175.degree.-250.degree. F using from 50 to 350 percent excess of oxygen when utilizing air or any suitable oxygen containing gas basis stoichiometric conversion of sulfite to sulfate.

REFERENCES:
patent: 2640758 (1953-06-01), Aries et al.
patent: 2665249 (1954-01-01), Zimmerman
patent: 3178260 (1965-04-01), Tirado
patent: 3761409 (1973-09-01), McCoy et al.

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