发明名称 |
METHOD OF RECOVERING COAGULANT FROM HYDROXIDE-CONTAINING WATER- TREATMENT SLUDGE |
摘要 |
FIELD: waste water treatment. SUBSTANCE: invention relates to reagent treatment of industrial sewages followed by recovery of aluminum-containing coagulant from oil-hydroxide-containing sludge. The latter operation is effected by treatment with acidic aluminum- containing waste solution obtained from water decomposition of catalyst complex used in industrial Friedel-Crafts-Gustavson process characterized by pH 0.6-1.0 and contents of free hydrochloric acid 0.94-2.20 wt.pts, aluminum chloride 0.79-1.86 wt.pts, and alkylaromatic hydrocarbons 200-500 mg/cu.dm. Secondary coagulant solution has good physico-chemical and coagulation properties. EFFECT: reduced operational expenses due to utilized waste. 2 cl |
申请公布号 |
RU2133225(C1) |
申请公布日期 |
1999.07.20 |
申请号 |
RU19980102174 |
申请日期 |
1998.01.26 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "ANGARSKAJA NEFT |
发明人 |
VORONINA V.M.;POLUBENTSEVA M.F.;ELSHIN A.I.;DUGANOVA V.V. |
分类号 |
C02F1/52;C01F7/74;C02F101/32 |
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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