Quaternary ammonium salt positive ion-type organic polymeric flocculant and preparation method thereof

Abstract

The invention relate to a quaternary ammonium salt positive ion-type organic polymeric flocculant and a preparation method thereof. The polymeric flocculant contains a quaternary ammonium group, the positive ion degree is between 40% and 50%, and the raw material of the flocculant comprises the following components in parts by mass: 5-50 parts of dimethylamine, 1-45 parts of urea, 20-60 parts of epichlorohydrin, 1-40 parts of water, 1-5 parts of catalyst and 2-8 parts of cross-linking agent. In the invention, the product is less in dosage, is obvious in waste water-treating effect, and is especially suitable for treating slurry-preparing and paper-making paper waste water, printing and dyeing waste water and organic waste water containing active groups; and the preparation method is simple, the process conditions are mild, the preparation method is carried out by adopting a conventional device under the ordinary pressure, and no three wastes are discharged.

Description

technical field [0001] The invention belongs to the fields of fine chemical industry and environmental protection, and more specifically relates to a quaternary ammonium salt cationic organic polymer flocculant and a preparation method thereof. Background technique [0002] With the rapid growth of our country's economy, more and more enterprises are about to face the problem of water shortage. At the same time, the pollution of water environment is becoming more and more serious. The paper industry and the printing and dyeing industry are two major traditional water users, and they are also important sources of water pollution. At present, my country's paper industry is in a period of rapid development. It is understood that the average annual growth rate of production and consumption of my country's paper industry has been 18% in the past 10 years. However, due to insufficient capital and technology, the production technology of my country's paper industry generally lags ...

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Problems solved by technology

[0005] In recent years, Gao Baoyu, Zhang Hua, Yue Qinyan, etc. have reported on the research on epichlorohydrin-dimethylamine polymers. Preparation of polyepichlorohydrin amine and its decolorization performance [J]. Fine Chemical Industry, 2005, 22 (8): 611-615. Zhang Changjun, Zhang Bo, Ai Shiyun, etc. Preparation and performance research of quaternized functional polymer flocculant [J]. Journal of Shandong University (Natural Science Edition), 2006, 41(5): 134-137. Sun Xun, Gao Baoyu, Zhang Donghua, etc. Epichlorohydrin-dimethylamine polymer and polyaluminum chloride for the treatment of printing and dyeing wastewater [J]. Environmental Chemistry, 2007, 26(1): 51- 54. Wang Sufang, Lin Bei, Ma Ying, etc. Synthesis and Performance Evaluation of Polyquaternium Inverse Demulsifier [J]. Industrial Water Treatment, 2008, 28(6): 56-58. Pu Hongyu. Cationic Modified Polycyclic Synthesis and application of oxychloropropane [J]. Guangzhou Chemical Industry, 2008, 36(6): 31-33. Huang Xinzhao, Zhang Zhongyi, Zhang Xiaodong. Preparation and application properties of cationic polymers [J]. Chemical Industry and Engineering, 2009 , 26(2): 114-118. However, in the synthesis process of epichlorohydrin-dimethylamine polymer, part of dimethylamine is replaced with urea to reduce cost and improve wastewater treatment effect. There is no literature at home and abroad. to report

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