Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1980-08-27
1982-07-20
Castel, Benoit
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210721, 210750, 210758, 210764, 210765, C02F 172, C02F 152
Patent
active
043404898
ABSTRACT:
Wastewater is continuously disinfected by combining the wastewater with sufficient acid to reduce the pH of the wastewater to less than about 4 and with sufficient SO.sub.2 that the wastewater has a selected free SO.sub.2 content of at least 5 mg/liter. The combined SO.sub.2 /wastewater is maintained at the selected free SO.sub.2 content for at least about 5 minutes. The wastewater can be treated by dissolving SO.sub.2 into a first portion of the wastewater and combining the first portion with SO.sub.2 dissolved therein with a second portion of the wastewater stream. SO.sub.2 can be stripped from the wastewater, and the stripped SO.sub.2 can be recycled.
REFERENCES:
patent: 1229305 (1917-06-01), Menzies
patent: 1543939 (1925-06-01), Machlachlan
patent: 2069621 (1937-02-01), Patrick
patent: 2134679 (1938-11-01), Allen
patent: 2171203 (1939-08-01), Urbain et al.
patent: 2728726 (1955-12-01), Basset
patent: 3690860 (1972-09-01), Salutsky et al.
patent: 3948774 (1976-04-01), Lindman
patent: 4029574 (1977-06-01), Reimann
patent: 4123355 (1978-10-01), Poradek et al.
patent: 4178239 (1979-12-01), Lowther
M. B. Kim-E et al.; "Reclamation of Hyperion Secondary Effluent by Reverse Osmosis"; UCLA School of Eng. & Appl. Sci. Jun. 1975 (pp. 66-72).
A. J. Lingg; "Potential of Sulphur Dioxide for Disinfection of Waste Water".
Skinner et al.; "Inhibition and Inactivation of Vegetative Microbes"; Academic Press, 1976 (pp. 89-110).
Rahn et al.; "Effect of Increase in Acidity on Antiseptic Efficiency"; Ind. & Eng. Chem.; vol. 36, 2, (pp. 185-187) 1944.
Adams V. Dean
Reynolds James H.
Castel Benoit
International Environmental, Inc.
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