摘要
为了解决矿井水处理现有工艺流程长、出水水质不稳定等问题,优化矿井水处理工艺,以河北某矿井水为研究对象,采用直接超滤短流程工艺进行试验研究,探究反洗时长、反洗周期、工作压力等工艺参数对超滤的影响,并筛选膜污染清洗药剂。结果表明:最佳工艺参数为反洗时长120 s,反洗周期60 min,跨膜压差0.25 MPa,在此条件下经过300 min试验测试,膜通量为136 L/(m^(2)·h),维持在初始膜通量的91%,出水浊度稳定在0.05 NTU以下;膜污染最佳清洗药剂为0.2%HCl,对污染前后及酸洗碱洗后的膜片进行SEM和EDS测试分析,结果表明造成酸洗碱洗效果差异的主要因素为矿井水中的硬度离子和铝离子。
In order to solve the problems of the existing mine water treatment process such as long process flow and unstable effluent water quality,optimize mine water treatment process as well,taking the mine water of a mine in Hebei province as the research object,the direct ultrafiltration short process was used to carry out experimental research,the influence of backwashing time,backwashing cycle,working pressure and some other process parameters on ultrafiltration were investigated,and proper cleaning reagent was screened also.The results indicated that,the optimal process parameters were as follows:the backwashing time was 120 s,the backwashing cycle was 60 min,and the transmembrane pressure was 0.25 MPa.Through a 300-minute test under the above condition,the membrane flux was 136 L/(m^(2)·h),which maintained at 91% of the initial membrane flux,the effluent turbidity was stable below 0.05 NTU,the optimal cleaning reagent for membrane fouling was 0.2% HCl.The unpolluted membrane and polluted membrane before and after acid washing and alkali washing were tested by SEM and EDS respectively,the results indicated that,the main factors causing the difference of acid and alkali washing effect were hardness ions and aluminum ions in mine water.
作者
李福勤
梁桢
王瑾
王世奕
何绪文
代其彬
田莉
LI Fuqin;LIANG Zhen;WANG Jin;WANG Shiyi;HE Xuwen;DAI Qibin;TIAN Li(School of Energy and Environmental Engineering,Hebei Universwity of Engineering,Handan 056038,China;Hebei Province Water Pollution Control and Water Ecological Restoration Technology Innovation Center,Handan 056038,China;Hebei Engineering Research Center for Sewage Treatment and Resource Utilization,Handan 056038,China;School of Chemistry and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Jizhong Energy Fengfeng Group Co.,Ltd.,Handan 056001,China)
出处
《工业用水与废水》
CAS
2024年第1期49-53,75,共6页
Industrial Water & Wastewater
基金
河北省自然科学基金智慧矿山联合基金资助项目(E2021402015)。
关键词
直接超滤
矿井水
悬浮物
膜比通量
膜污染
direct ultrafiltration
mine water
suspended solids
membrane specific flux
membrane fouling
