发明名称 |
Process for the disposal of hardening-shop wastewaters |
摘要 |
Hardening-shop wastewaters can be removed without salt incrustations and without creating harmful exhaust steam during the evaporation of the wastewaters only if the heat is supplied across the free liquid surface to temperatures of 50 DEG C. to 85 DEG C. and a flow of air is conducted across the free liquid surface.
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申请公布号 |
US4906330(A) |
申请公布日期 |
1990.03.06 |
申请号 |
US19880291624 |
申请日期 |
1988.12.29 |
申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
PREISSER, FRIEDRICH |
分类号 |
C02F1/10;C02F1/04;C02F9/00 |
主分类号 |
C02F1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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