基于低压纳滤膜的家用净水处理工艺研究

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关键词：低压纳滤膜；净水处理；化学清洗；恒流平板过滤；浓差极化中图分类号：TU991.2 文献标识码：A 文章编号：1008-9500（2025）05-0108-04DOI： 10.3969/j.issn.1008-9500.2025.05.031

Abstract： Thereare many safety hazards in the purification processof drinking water.In orderto improvethe safetyof drinking water，reducetheuseof chemical agents，lower theriskofsecondary polution，and enhance theantipollution ability and stabilityof membranes，low pressre nanofiltration membrane technologyis adopted for household water treatment.Byusing aconstant pressure flat platecross flow filtration system and controlling the pre membrane pressure to 0.5 MPa，experiments were conducted toanalyzethe waterpurification efectof lowpressure nanofiltration membranes in diferent seasons.The results showed that inspringandautumn，the removalrates offluoride，microorganisms，and lead compounds by low pressure nanofiltration membranes reached 97.5% ， 96.8% ，and 96.5% ，respectively. In addition， the specificfluxoflow pressure nanofiltration membranes variesslightly indiferent seasons，demonstrating good stabilityand anti polution ability.In terms ofresistance changes，the self resistance increases significantly under winter water sources， reaching O.4N.Theresearch results indicate thatlow pressure nanofiltration membrane technologycan efectivelyremove harmful substances from water，improve water qualitysafety，and demonstrate good stabilityandanti polutionability.

Keywords：low pressure nanofiltration membrane;water treatment;chemical cleaning; constant current plate filtration concentration polarization

随着生活水平的不断提高，人们对饮用水质量和安全性的关注日益增加。（剩余3641字）