发明名称 |
Chemical pre-treatment and biological destruction of propylene carbonate waste streams effluent streams to reduce the biological oxygen demand thereof |
摘要 |
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.
|
申请公布号 |
US5275734(A) |
申请公布日期 |
1994.01.04 |
申请号 |
US19920924740 |
申请日期 |
1992.08.04 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
SHURTLEFF, JAMES A.;UNGER, KEVIN P. |
分类号 |
C02F3/12;C02F9/00;G03F7/30;G03F7/42;H01L21/027;H01L21/30;(IPC1-7):C02F3/12 |
主分类号 |
C02F3/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|