发明名称 |
Process and system for treating waste water |
摘要 |
A process of treating raw or primary waste water using a powdered, activated carbon/aerated biological treatment system is disclosed. Effluent turbidities less than 2 JTU (Jackson turbidity units), zero TOC (total organic carbon) and in the range of 10 mg/l COD (chemical oxygen demand) can be obtained. An influent stream of raw or primary waste water is contacted with an acidified, powdered, activated carbon/alum mixture. Lime is then added to the slurry to raise the pH to about 7.0. A polyelectrolyte flocculant is added to the slurry followed by a flocculation period - then sedimentation and filtration. The separated solids (sludge) are aerated in a stabilization sludge basin and a portion thereof recycled to an aerated contact basin for mixing with the influent waste water stream prior to or after contact of the influent stream with the powdered, activated carbon/alum mixture.
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申请公布号 |
US4076615(A) |
申请公布日期 |
1978.02.28 |
申请号 |
US19750619628 |
申请日期 |
1975.10.06 |
申请人 |
BATTELLE PACIFIC N. W. LABORATORIES |
发明人 |
OLESEN, DOUGLAS E.;SHUCKROW, ALAN J. |
分类号 |
C02F3/08;B01D21/01;C01B31/08;C02F3/12;(IPC1-7):C02C5/04 |
主分类号 |
C02F3/08 |
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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