PROCESS FOR PURIFYING SEWAGE
    1.
    发明专利

    公开(公告)号:ZA754562B

    公开(公告)日:1976-07-28

    申请号:ZA754562

    申请日:1975-07-16

    Applicant: HOECHST AG

    Inventor: KLEIN R HELBERG J

    Abstract: 1480661 Reducing Ti and Al in aqueous waste HOECHST AG 17 July 1975 [17 July 1974] 30018/75 Heading C1C A process for reducing the Ti and Al content of aqueous waste liquid comprises establishing a pH of 4À5 to 9 and separating the resulting Ti and Al-containing deposit. A flocculating agent may be incorporated with the waste liquid to assist formation of the said deposit; a suitable agent is one based on polyacrylamide. The method is suitable for waste liquid obtained from the polymerization of olefins by, e.g., a Ziegler process.

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