发明名称 Procedure and plant for biological treatment of water by activated sludge, uses preliminary stages to fix aeration and non-aeration times and values for nitrate concentrations
摘要 <p>The procedure in which water is passed through a biological tank with a free or mixed biomass and alternating oxidizing and reducing periods, subjecting the mixed liquor to a sludge and water separating phase, includes preliminary stages in which minimum (T1min, T2min) and maximum (T1max, T2max) authorized aeration and non-aeration times for the liquor are fixed. The procedure in which water is passed through a biological tank with a free or mixed biomass and alternating oxidizing and reducing periods, subjecting the mixed liquor to a sludge and water separating phase, includes preliminary stages in which minimum (T1min, T2min) and maximum (T1max, T2max) authorized aeration and non-aeration times for the liquor are fixed. The preliminary stages also include fixing lower (SB NO3) and upper (SH NO3) values for the concentration of nitrates in the treated water or mixed liquor, and fixing at least one upper value for the oxidation/reduction potential (SH redox) of the mixed liquor.</p>
申请公布号 FR2858609(A1) 申请公布日期 2005.02.11
申请号 FR20030009629 申请日期 2003.08.04
申请人 OTV SA 发明人 OGER LOIC;TAZI PAIN ANNIE;PAYRAUDEAU MICHELE
分类号 C02F1/00;C02F3/00;C02F3/30;(IPC1-7):C02F3/30 主分类号 C02F1/00
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