The purification of rainwater with nanofiltration membrane
The harvest and reuse of rainwater as a way to help relieve the water shortage is getting increased attention globally, especially in the countries facing water shortage or in rural areas without access to centralized water supply systems.As rainwater generally contains substantial amounts of contaminants including particles, microorganisms, heavy metals, and organics, further treatment of the collected rainwater is necessary.The removal efficiencies of contaminants under different conditions was studied in nanofiltration (NF) process.The results indicated that the optimum conditions in purification of rainwater were as follows: the transmembrane pressure 1.0 MPa, the flow rate 30 L/min.The removal rate of CODMn was more than 76.5%, turbidity was beyond 95%, the hardness was over 72.4%, and the nitrogen and phosphorus were in the ranges of 32.5-33.3% and 17.4-18.5%, respectively.The NF technology could remove organic substances and inorganic ions more effective, which ensured the water safety.After purification, the effluent can meet the drinking water standard.
Nanofiltration membrane Rainwater Removal rate Treatment
Ping Xiao Feng Xiao
Green Intelligence Environmental School, Yangtze Normal University, No.16 Juxian Road, Fuling Distri School of Renewable Energy, North China Electric Power University, No.2 Beinong Road, Changping Dist
国际会议
法国巴黎
英文
160-165
2019-03-13（万方平台首次上网日期，不代表论文的发表时间）