高盐废水浓缩结晶回用工艺技术
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摘要
高盐废水处理零排放系统工艺包含三大部分:预处理,浓缩分盐和再浓缩结晶出盐。原水经过预处理后,达到进入膜浓缩系统要求;进入膜浓缩系统对原水进行浓缩,产生淡水准备回用,浓水进行纳滤分盐,浓缩过程中反渗透产水回用。整个工艺过程,产水实现达标回用,氯化钠、硫酸钠盐满足盐回用标准,实现废水零排放、盐的资源化、产水回用化。
The zero-discharge system process for high-salt wastewater treatment consists of three parts: pretreatment,concentration and crystallization. After pretreatment,raw water meets the requirements of membrane concentration system;raw water is concentrated into membrane concentration system to produce fresh water for reuse,concentrated water for nanofiltration and salt separation,and reverse osmosis water for reuse in the process of concentration. In the whole process,the produced water can be reused up to the standard. Sodium chloride and sodium sulfate can meet the standard of salt reuse and realize zero discharge of wastewater,resource utilization of salt and reuse of produced water.
The zero-discharge system process for high-salt wastewater treatment consists of three parts: pretreatment,concentration and crystallization. After pretreatment,raw water meets the requirements of membrane concentration system;raw water is concentrated into membrane concentration system to produce fresh water for reuse,concentrated water for nanofiltration and salt separation,and reverse osmosis water for reuse in the process of concentration. In the whole process,the produced water can be reused up to the standard. Sodium chloride and sodium sulfate can meet the standard of salt reuse and realize zero discharge of wastewater,resource utilization of salt and reuse of produced water.
引文
[1]朱勇强,张战军,张鸿雁.化工高盐度废水治理技术的探讨[J].应用技术学报,2018(2):114-117.
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[4]黄欣,陈业钢,苏楠楠,等.高盐废水分质结晶及资源化利用研究进展[J].化学工业与工程,2019(1):10-23.
[2]陈文杰,黄晓东,刘其海,等.工业高盐废水混合盐高效分离与回收研究[J].广州化工,2019(4):61-63.
[3]李丹丹,韩建秋.高盐废水生态处理技术研究进展及展望[J].应用技术学报,2018(4):340-345.
[4]黄欣,陈业钢,苏楠楠,等.高盐废水分质结晶及资源化利用研究进展[J].化学工业与工程,2019(1):10-23.