发明名称 |
METHOD PURIFYING WASTE WATER FROM LEATHER PRODUCTION |
摘要 |
FIELD: chemistry.SUBSTANCE: method includes homogenising waste water, mixing with a solution of an aluminium-containing coagulant, correcting pH, pressure floatation while saturating the waste water with air and removing floatation sludge. Correction of pH is carried out while homogenising the waste water to a value not lower than 10.5 by adding a 4% suspension of slaked lime in the presence of ethanolamine borate in amount of 4.0-6.0 mg/l. The aluminium-containing coagulant used is 10% aqueous aluminium chlorohydrate in amount of 10.0-20.0 mg/l. Before pressure floatation, 0.2% aqueous flocculant solution and ethanolamine borate are added to the mixture in amount of 15.0-25.0 and 3.0-5.0 mg/l, respectively. Saturation of the waste water with air during floatation is carried out by forced supply under a pressure of 0.11-0.25 MPa purified recycled effluent after treatment thereof with an ultrasonic field with frequency of 25-35 KHz with simultaneous supply of compressed air.EFFECT: invention simplifies the purification process, reduces purification time and broadens technological capabilities of the method.6 cl, 1 tbl |
申请公布号 |
RU2530042(C1) |
申请公布日期 |
2014.10.10 |
申请号 |
RU20130117310 |
申请日期 |
2013.04.17 |
申请人 |
BAJANDIN MAKSIM VALER'EVICH;KLENOVSKIJ DMITRIJ VALER'EVICH;BAJANDINA EVGENIJA NIKOLAEVNA;KLENOVSKAJA MARINA ALEKSANDROVNA;BAJANDIN DMITRIJ VALER'EVICH;GALUSHKINA JULIJA VLADIMIROVNA;SHARAPOV NIKOLAJ VLADIMIROVICH;CHEPYGOVA EKATERINA VITAL'EVNA;DONTSOV ANTON ALEKSANDROVICH;GALUSHKIN VLADIMIR SERGEEVICH |
发明人 |
BAJANDIN MAKSIM VALER'EVICH;KLENOVSKIJ DMITRIJ VALER'EVICH;BAJANDINA EVGENIJA NIKOLAEVNA;KLENOVSKAJA MARINA ALEKSANDROVNA;BAJANDIN DMITRIJ VALER'EVICH;GALUSHKINA JULIJA VLADIMIROVNA;SHARAPOV NIKOLAJ VLADIMIROVICH;CHEPYGOVA EKATERINA VITAL'EVNA;DONTSOV ANTON ALEKSANDROVICH;GALUSHKIN VLADIMIR SERGEEVICH |
分类号 |
C02F9/08;C02F1/24;C02F1/36;C02F1/52;C02F1/56;C02F103/24 |
主分类号 |
C02F9/08 |
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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