发明名称 |
METHOD OF RETRIEVING OVERLOADED PURIFIER DURING CONTINUOUS OPERATION AND DEVICE FOR PURIFYING TO PERFORM SAME METHOD |
摘要 |
<p>A method to upgrade existing sewage treatment plants which become overloaded in long-term continuous operation by passing waste water or a part stream thereof through a filter device which is installed additionally prior and/or subsequent to at least one overloaded stage of the treatment plant. Thus method replaces preclarification, clearing, thickening and sludge dehydration steps for a part of waste water to be treated and also a part of the biological degradation by a simple purification process using the separated solids as an alluvial filter layer. A sewage treatment plant for waste water treatment by said method is described.</p> |
申请公布号 |
JPS5491959(A) |
申请公布日期 |
1979.07.20 |
申请号 |
JP19780154280 |
申请日期 |
1978.12.15 |
申请人 |
HOECHST AG |
发明人 |
DEIITERU DEITSUSERUBETSUKU |
分类号 |
B01D24/48;B01D29/60;C02F1/52;C02F1/56;C02F3/02;C02F3/04;C02F3/12;C02F9/00;C02F11/12 |
主分类号 |
B01D24/48 |
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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