【摘要】 为研究平板膜处理景观水体的特性,采用孔径为0.1μm、0.2μm和0.3μm平板膜处理景观水体用水。结果表明,三种膜对悬浮物和藻类有很好的去除效果,去除率都在95%以上,对于溶解态的N、P去除效果不好;三种膜处理效果相比较,孔径最小的0.1μm膜对各种污染物去除效果最好;在过滤不同污染物配水时,0.1μm膜的膜通量下降速率最慢,稳定后较0.2μm和0.3μm膜的膜通量大;通过对污染物的粒径分析和膜表面污染物分析认为,景观水体中,主要污染物对膜通量的影响顺序为:腐殖酸>藻>悬浮物;150nm是景观水体中污染物质粒径的分界点,污染物质粒径主要集中在150nm以上;与0.2μm、0.3μm膜相比,0.1μm膜抗污染能力更强,更适合用来处理景观水体用水。更多还原

【Abstract】 To investigate the features of landscape water treatment by flat panel membranes,the membranes with different pore sizes of 0.1 μm,0.2 μm,and 0.3 μm were used for the treatment.The results showed that the suspended solids and algae could be removed effectively by all three kinds of membranes with the removal rates reaching up to 95%,while the dissovled nitrogen and dissovled phosphorus removal effects were not satisfying.Comparing the removal effects of three kinds of membrane,it was shown that the membrane with 0.1 μm pore size had best removal efficiency to all sorts of pollutants.In the filter of water with different pollutants,flux decline rate of the membrane with 0.1 μm pore size was the slowest and the flux was higher than the membranes with 0.2 μm and 0.3 μm pore sizes after stablization.Through the analysis of the contaminants particle size and membrane surface pollutants,the order of main pollutants influencing the flux as follows: humic acid > algae > suspended solids.In landscape water,150 nm was the boundary of pollution particle size,and main part of pollutants consisted of particles with size more than 150 nm.Compared with 0.2 μm and 0.3 μm pore sizes membrane,pollution-resistant ability of 0.1 μm pore sizes membrane was the best and more suitable for treating landscape water.更多还原