采用浸没式平板陶瓷膜处理东江原水的应用试验  

Experiment on Application of Treatment for Raw Water From Dongjiang River with Immersion-Type Flat Ceramic Membrane

作　　者：范小江[1] 盛德洋 张建国 加藤秀生 李泰日 张锡辉[1] 

机构地区：[1]清华大学深圳研究生院,广东深圳518055 [2]东莞市东江水务有限公司,广东东莞523000 [3]明电舍株式会社

出　　处：《净水技术》2012年第5期15-19,24,共6页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07423)

摘　　要：采用过滤面积0.571 2 m2,孔径为60～70 nm的平板陶瓷膜,对东江原水进行过滤试验,研究在不同渗透通量、原水浊度、原水有机物浓度下陶瓷膜对浊度和有机物的去除效果,以及陶瓷膜跨膜压差的变化。结果表明,渗透通量、原水浊度和有机物浓度的升高都会引起跨膜压差的升高,其中有机物浓度的影响大于浊度的影响;膜出水水质分析表明陶瓷膜出水浊度稳定在0.1 NTU以下,各项指标除氨氮外都满足新的国家饮用水水质标准;陶瓷膜过滤能将病原微生物有效去除,从而提高水体的微生物安全保障水平;陶瓷膜能显著去除水中分子量大于2 000 Da的有机物,但对小分子有机物和无机离子基本没有去除效果。膜清洗试验表明,使用单种化学清洗剂时NaOH的效果最好。A comprehensive filtration experiment for Dongjiang raw water was conducted by adopting fiat ceramic membrane with filtration area of 0.571 2 m2 and aperture of 60-70 nm to analysis the water quality and transmembrane pressure （TMP） under various filtration flux, turbidity as well as organic matter concentration of raw water. Research results indicate that the TMP is increased with the increasing of filtration flux, turbidity and organic matter concentration of raw water. The influence of organic matter concentration of raw water is greater than that of turbidity. The analysis results of effluent water indicate that the turbidity is less than 0.1 NTU stably, every index except ammonia nitrogen meets the latest national drinking water quality standards. The results also show that the pathogenic microorganisms are removed effectively by ceramic membrane so that the biological safety of effluent is improved. The organic matter whose molecular weight is more than 2 000 Da can be marked removed by the ceramic membrane as well. However, organic matter with smaller molecular weight and inorganic ions can be hardly removed by the ceramic membrane. In addition, results of membrane cleaninz exoeriment show that NaOH is the best reazent when single chemical cleaning reazont is aoolied.

关 键 词：陶瓷膜 东江原水 过滤 浊度 生物安全 

分 类 号：TU991.2[建筑科学—市政工程]