Chlorine oxidation waste water treatment method

Details Chlorine oxidation waste water treatment method Chlorine oxidation waste water treatment method

1987-10-29

1988-09-06

Wyse, Tom

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210712, 210745, 210754, 210758, C02F 124, C02F 176

Patent

active

047691549

ABSTRACT:
A method for oxidation treatment of waste water material containing organic solid particles includes forming a discrete batch of waste water material, adjusting the pH of the entire batch to close to 7 or acid-alkaline neutral, and then flowing the batch through a reactor along with chlorine gas. The chlorine produces hypochlorous acid, which produces nascent oxygen and hypochlorite ions, for chemically oxidizing the organic solid particles and also forming minute gas bubbles, including nitrogen and carbon dioxide, which adhere to the particles. The treated material is flowed into a separation receptacle, where the gas bubble buoyed particles float to the surface of the water. The clear water is rapidly gravity-drained from beneath the particles, leaving the particles coalesced into a relatively dry, disinfected or stabilized sludge. The drained clear water may be substantially pH-neutralized and then flowed into a water system for reuse, while the stabilized, disinfected sludge may be deposited elsewhere as fertilizer or ground cover and the like.

REFERENCES:
patent: 3300402 (1967-01-01), Grich et al.
patent: 3904521 (1975-09-01), Stopka
patent: 3953331 (1976-04-01), Bradley
patent: 4179347 (1979-12-01), Krause et al.
patent: 4211651 (1980-07-01), Thomas
patent: 4482459 (1984-11-01), Shiver
patent: 4615807 (1986-10-01), Haines et al.

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