膜耦合化学除硬技术在循环排污水零排工艺中的应用
Application of membrane coupled chemical dehardening technology in zero discharge process of circulating wastewater
周建强 1张智超 2董庆华 2毕飞 2张林3
作者信息
- 1. 宁夏煤矿设计研究院有限责任公司,银川 750004
- 2. 利得膜(北京)新材料技术有限公司,北京 100010
- 3. 浙江大学化学工程与生物工程学院,杭州 310058
- 折叠
摘要
创新性地运用膜耦合化学除硬技术,代替传统的"高密池+V型滤池+超滤"组合工艺,使多晶硅循环冷却排污水经过膜耦合化学除硬、除浊预处理后,直接进入"阳床+反渗透系统",提出了"膜耦合化学除硬+阳床+多段反渗透"的高水回收率短流程技术路线.工程实践表明该技术路线运行可靠,可大幅缩短工艺流程、降低运行能耗、延长阳床的再生周期、同时可使整体系统水回收率达到90％以上.
Abstract
Membrane coupled chemical dehardening technology is innovatively used to replace the traditional combination process of"high-density pool+V-type filter+ultrafiltration".The polycrystalline silicon circulating cooling sewage is pre-treated with membrane coupled chemical dehardening to remove hardness and turbidity,and then directly enters the"cation bed+reverse osmosis system"process.A high water recovery rate and short process technology route of"membrane coupled chemical dehardening+cation bed+multi-stage reverse osmosis"was proposed.The engineering practice results indicate that the technical route operates reliably and can significantly shorten the process flow,reduce operating energy consumption,extend the regeneration cycle of the cation bed,and make the water recovery rate of the whole system reach more than 90％at the same time.
关键词
循环冷却排污水/膜耦合化学除硬/除硬/短流程/零排放Key words
circulating cooling sewage/membrane coupled chemical dehardening/removal of hardness/short process/zero discharge引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据