高藻进水条件下常见滤池过滤性能研究

第31卷2016焦第6期l2月山东建筑大学学报JOURNALOFSHANDONGJIANZHUUNIVERSITYV01．3lNo．6Dec．2016文章编号：1673—7644(2016)06—0549—07高藻进水条件下常见滤池过滤性能研究张克峰，王珊，聂荣飞，王小侥(1．山东建筑大学市政与环境工程学院，山东济南250101；2．清华大学环境学院，北京100084)摘要：高藻进水条件下常见滤池过滤性能的研究可为滤池构建参数优化提供一定理论依据，为新建和改造地表水厂滤池工程提供技术支持。文章针对地表水源水厂滤池表层滤料堵塞、水头损失急剧增加和过滤周期急剧缩短问题，通过不同类型常见滤池滤柱模拟试验，研究了不同类型滤池对高藻水的抗负荷冲击能力，对比分析了其出水浊度、颗粒数分布、藻类数量、过滤周期、水头损失等变化情况。结果表明：原水预氧化、增加絮凝剂投加量方式不能使藻类在絮凝沉淀过程中得到有效去除；煤砂滤池对高藻水有较强抗负荷冲击能力，过滤周期最长，可达20h左右；过滤初期水质较差，随时间增加出水水质提高；藻细胞主要被表层滤料黏附截留，且表层滤料对藻细胞的去除率高达97％。关键词：高藻水；滤池；过滤性能中图分类号：TU991．24文献标识码：AStudyontheperformanceofdiferenttypicalfiltersundertheinfluentofhighalgae-ladenwaterZhangKefeng，WangShan，NieRongfei，eta1．(SchoolofMunicipalandEnvironmentalEngineering，ShandongJianzhuUniversity，Jinan250101，China)Abstract：Thestudyontheperformanceofdiferenttypicalfiltersundertheinfluentofhi【ghalgae—ladenwatermayprovidemanybasictheoriesandtechnicalsuppo~sforthedrinkingwatertreatmentplants’operationanddesignundertheinfluentofhighalgae—ladenwater．Insurfacedwatertreatmentplant，alargenumberofalgalcellsflowintothefilter，whichcaneasilyblockthesurfacefiltrationmedia，causedramaticallyincreasewaterheadlossandshortentheperiodoffilter．Throughsimulationexperimentofthedifferenttypicalfiltercolumns，theresistanceloadcapacitiesofhighalgaewaterbetweenthedifferenttypicalfilterswereresearched．Thisstudycomparativelyanalyzedthechangeinefluentwater，suchastheturbidity，distributionofparticlenumber，theamountofalgae，thetimeoffiltrationcycle，headlossandSOon．Theresultsindicatethatcoal-sandfilterhasstrongabilitytoresistimpactloadforhighalgaewater，andthatfilteringcyclehourismuchlongerwhichcanamounttoabout20h；GACfilter，gradatingmaterialfilterandhomogeneoussandfilterhaveweakabilitytoresistimpactloadforhighalgaewaterwithfiltercycleshortenedhalf．Theinitialfilterwaterqualityispoorer，butimprovingovertime；Algalcellsaremainlyadheredandinterceptedbythesurfacefiltermaterialwhichremoved97％algalcells．Keywords：highalgae-ladenwater；typicalfilters；filtrationperformance收稿日期：2016—10—24基金项目：国家重大水专项(2