- Application of polyaluminum chloride prepared by a membrane reactor to dyestuff wastewater
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- 论文类型： 期刊论文
- 发表时间： 2007-04-05
- 发表刊物： DESALINATION
- 收录刊物： SCIE、EI
- 卷号： 208
- 期号： 1-3
- 页面范围： 49-61
- ISSN号： 0011-9164
- 关键字： polyaluminum chloride; membrane reactor; application; dyestuff; wastewater
- 摘要： In this study polyaluminurn chloride (PAC) has a high Al-b content, 80.1 %. It was the most efficient species of PAC. PAC was synthesized with a membrane reactor which made of a hollow-fiber (HF) ultrafiltration membrane (UFM). The UFM was made from PPESK, a novel membrane material with properties of excellent thermal, chemical and mechanical stability. In this reactor, a sodium hydroxide solution permeated slowly through the microspores of HF UFM into AlCl3 wastewater. Because the alkali drop size was reduced to nano-scale, it is beneficial to bring a dramatic reduction of localized super-saturation and enhancement of the Al-b quantity. The purpose of the study is to prepare liquid PAC utilizing the aluminum chloride wastewater as a raw material through a membrane reactor system and to evaluate the performance by using an orthogonal array of the design of experiments (OADE) on the sedimentation to four different dyestuffs: Titan Yellow, Methyl Orange, Food Yellow and Procion Red. The results show that PAC prepared by the membrane reactor has higher Al-b and better flocculation properties to different dyestuffs than the commercial PAC, whose average sedimentation can exceed 96%.
