Chemical pre-treatment and biological destruction of propylene c

Details Chemical pre-treatment and biological destruction of propylene c Chemical pre-treatment and biological destruction of propylene c

1992-08-04

1994-01-04

Silverman, Stanley S.

Liquid purification or separation

Processes

Treatment by living organism

210631, 210908, 210749, C02F 312

Patent

active

052757340

ABSTRACT:
Disclosed is a method of treating a process stream from a process producing a non-biodegradable alkylene carbonate stream. The alkylene carbonate is hydrolyzed in a strong, aqueous, alkaline solution to form an aqueous alkaline solution of the corresponding alkylene glycol. This solution is then acidified to a pH of about 8 to 8.5. The acidified solution is aerated in activated sludge to reduce the biological oxugen demand (BOD) of the solution.

REFERENCES:
patent: 3926796 (1975-12-01), Fujita et al.
patent: 4760014 (1988-07-01), Wong
patent: 4786417 (1988-11-01), Miki et al.
patent: 5112491 (1992-05-01), Strantz, Jr.
patent: 5182029 (1993-01-01), Erb

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