摘要
针对矿井水零排放的迫切需求与矿区水资源短缺的现状,研究了某矿井水零排放项目纳滤分盐系统的运行情况.从调试到正常运行半年以来,该系统运行情况良好,超滤膜对COD的截留率达到70%,对硅的截留率在40%~70%之间,纳滤膜可以有效地将来水中的氯化钠与硫酸钠进行分离,产水侧NaCl/Na2SO4比达到55以上,浓水侧Na2SO4/NaCl比达到9以上,为后续蒸发结晶产出纯盐奠定基础.
In view of the urgent need for mine water zero discharge and the current situation of water shortage, the operation of the nanofiltration salt separation system of a mine water zero discharge project were studied. From the commissioning to the normal operation for half a year, the system ran well and could effectively separate the sodium chloride and sodium sulfate in the influent. The retention rate of COD by ultrafiltration membrane was 70%, and the rejection of silicon was between 40% and 70%. The ratio of NaCl/Na2SO4 on the produced water side was above 55, and the ratio of Na2SO4/NaCl on the concentrated water side was above 9, which laid a foundation for subsequent evaporation and crystallization of pure salt.
作者
史元腾
王小强
荆波湧
赵泽盟
张孔思
程海涛
SHI Yuanteng;WANG Xiaoqiang;JING Boyong;ZHAO Zemeng;ZHANG Kongsi;CHENG Haitao(China Coal Energy Research Institute Co., Ltd, Xi'an 710054, China;China Coal Xi'an Design Engineering Co., Ltd, Xi'an 710054, China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2019年第3期119-124,共6页
Membrane Science and Technology
关键词
纳滤膜
超滤膜
矿井水
分盐
硫酸钠
氯化钠
nanofiltration membrane
ultrafiltration membrane
mine water
salt separation
sodium chloride
sodium sulfate
