发明名称 |
FOERFARANDE FOER BEHANDLING AV AVFALLSVATTEN VILKET GRUNDAR SI PAO ANVAENDNING AV AKTIVSLAM |
摘要 |
<p>1512693 Phosphate stripping of sewage UNION CARBIDE CORP 20 June 1975 [21 June 1974 4 June 1975] 26229/75 Heading C1C A mixed liquor of phosphate-containing sewage and activated sludge is aerated to reduce the BOD and cause the micro-organisms to take up phosphate. Phosphate-enriched sludge is separated to give a phosphate-free effluent. The enriched sludge is passed to a phosphate stripping zone to give supernatant liquor and settled sludge. At least part of the settled sludge is treated anaerobically to release phosphate, which is extracted by a lower phosphate-containing medium to transfer the soluble phosphate to this medium which is used to enrich the supernatant liquor. At least a portion of the anaerobic sludge is recycled to the aeration zone.</p> |
申请公布号 |
FI62275(C) |
申请公布日期 |
1982.12.10 |
申请号 |
FI19750001833 |
申请日期 |
1975.06.19 |
申请人 |
BIOSPHERICS INC |
发明人 |
LEVIN GILBERT VICTOR;TOPOL GEORGE JIRI;TARNAY ALEXANDRA GREGOR |
分类号 |
C02F1/52;C02F1/58;C02F3/12;C02F3/30;C02F11/02;(IPC1-7):C02F3/12 |
主分类号 |
C02F1/52 |
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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