发明名称 |
PROCEDE DE TRAITEMENT BIOLOGIQUE D'UN EFFLUENT ET INSTALLATION POUR LA MISE EN OEUVRE D'UN TEL PROCEDE |
摘要 |
The invention concerns a method for the biological treatment of an aqueous effluent for its purification whereby the effluent is contacted with activated sludge in at least a biological treatment pond (1), the biologically treated effluent is then clarified (2), part of the excess sludge derived from clarification (2) being returned (6) to the top of said pond. Said method is characterised in that it consists in retaining a second part of the excess sludge derived from clarification (2) in at least one aerated pond for biological activation (3) to constitute a biomass reserve and, when said aqueous effluent contains additional polluting agents, in using this biomass reserve for treating said additional polluting agents.
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申请公布号 |
FR2760232(A1) |
申请公布日期 |
1998.09.04 |
申请号 |
FR19970002706 |
申请日期 |
1997.03.03 |
申请人 |
OTV OMNIUM DE TRAITEMENTS ET DE VALORISATION |
发明人 |
GILLES PIERRE;GAID ABDELKADER |
分类号 |
C02F3/12;C02F3/30;(IPC1-7):C02F9/00 |
主分类号 |
C02F3/12 |
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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