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活性砂过滤器工作原理过滤物料过滤的机理Transporttosandparticle移动到砂粒Attachmenttosandparticle吸附到砂粒后Moleculardiffusion分子扩散Sedimentation沉淀Chancecontact偶然接触Straining变形Surfaceforces表面张力进水洗砂脏水滤后水传统反洗式砂滤WORKINGPRINCIPLEOFTHEASTRASANDFILTERASTRASAND活性砂滤的工作原理WaterFlow水路Thewateristransportedintothefilter进水输入活性砂滤系统Andentersthefilterbedviathesupplypipeandthedistributors通过输水管和分配器进入砂层Waterflowsupwardsthroughthefilterbedandfiltratespace水上流进入滤床和过滤空间Waterleavesthefilterattheoverflowweir通过出水堰板离开砂滤系统进水滤后出水WaterFlow水路feedfiltrate有效滤床厚度：2m;上流速度：15m/h;================有效过滤时间：8minSandbedismovingdownward砂床向下移动andwashed并被清洗DirtySandisliftedintheairlift肮脏砂在提砂管中气提sandfallsbackontopofthefilterbed通过洗砂器回落到滤床WORKINGPRINCIPLEOFTHEASTRASANDFILTERASTRASAND活性砂滤的工作原理SandFlow砂流Realtime:4-6hrs真实循环洗砂时间：4~6小时SandFlow砂路airliftprinciple气提提砂原理滤后水水流通过洗砂器液位高差Washwater洗砂脏水Thewasher–waterflow洗砂器---水路滤后水空气Airscoursdirtfromsand空气冲刷滤砂上的脏物Sandfallsthroughwasher滤砂通过洗砂器回落Dirttakenawaywithwashwater脏物通过清洗水被移除Sand砂Dirt脏物Thewasher–sandflow洗砂器---砂路