发明名称 |
WATER TREATMENT METHOD AND WATER TREATMENT FLOCCULANT |
摘要 |
There is provided a water treatment method using a water treatment flocculant that suffers from minimal secondary contamination with flocculation residues and contains an alkaline solution of a phenolic resin. A water treatment method involving the addition of a flocculant to water to be treated and subsequent membrane separation treatment. The flocculant contains an alkaline solution of a phenolic resin having a melting point in the range of 130� C. to 220� C. The water treatment flocculant is produced by a resole-type second-order reaction in the presence of an alkaline catalyst in which an aldehyde is added to an alkali solution of a novolak phenolic resin. The novolak phenolic resin is produced by a reaction between a phenol and an aldehyde in the presence of an acid catalyst. |
申请公布号 |
US2012241377(A1) |
申请公布日期 |
2012.09.27 |
申请号 |
US201013389171 |
申请日期 |
2010.08.05 |
申请人 |
OOI YASUHIRO;TADA KEIJIROU;ABE YUKIO;IIZUKA TAKESHI;KITANO SATORU;GUN EI CHEMICAL INDUSTRY CO., LTD.;KURITA WATER INDUSTRIES LTD. |
发明人 |
OOI YASUHIRO;TADA KEIJIROU;ABE YUKIO;IIZUKA TAKESHI;KITANO SATORU |
分类号 |
C02F1/54;C02F1/44;C08L61/14 |
主分类号 |
C02F1/54 |
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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