过氧化氢与硫酸铜组合强化处理高藻景观水效果研究

过氧化氢与硫酸铜组合强化处理高藻景观水效果研究*朱佳1汪小雄1陶益2张锡辉3雷中凯2(1.深圳职业技术学院城市水良性循环利用工程开发中心，广东深圳518055;2．清华大学深圳研究生院环境工程与管理研究中心，广东深圳518055;3.湖南大学土木工程学院，长沙410082)摘要:以深圳市发生水华的某景观湖水为研究对象，研究过氧化氢(H2O2)与硫酸铜(以Cu2+计)组合投加对水样藻类生物量的控制效果及对水样溶解氧、pH、浊度的影响。结果表明:组合投药能显著抑制藻类生长，在处理第7天，组合投药A组(20mg/LH2O2+0.2mg/LCu2+)、B组(10mg/LH2O2+0.4mg/LCu2+)、C组(5mg/LH2O2+0.8mg/LCu2+)的Chla浓度分别降至对照组的58%、30%、18%。投加过氧化氢有助于增强硫酸铜的抑藻效果，A组Chla浓度在第1天降至49μg/L，显著低于单独投加0.2mg/LCu2+的处理组(81μg/L)。投加过氧化氢有助于降低Cu2+投加量，B组抑藻效果与单独投加0.6mg/LCu2+处理组第7天数值相同。组合投药使水样溶解氧、pH值、浊度均显著变化，第7天时，溶解氧由17.5mg/L降至8.7～13.3mg/L，pH值由10.0降至8.5～9.2，浊度由200NTU降至84～94NTU。关键词:景观水;藻生物量;过氧化氢;硫酸铜DOI:10.13205/j．hjgc．201408010EFFECTSOFH2O2ANDCuSO4ONENHANCEDSUPPＲESSINGALGALBIOMASSOFALANDSCAPELAKEZhuJia1WangXiaoxiong1TaoYi2ZhangXihui3LeiZhongkai2(1.UrbanWaterBenignCycleEngineeringＲesearchandDevelopmentCenter，ShenzhenPolytechnic，Shenzhen518055，China2．ＲesearchCenterforEnvironmentEngineeringandManagement，GraduateSchoolatShenzhen，TsinghuaUniversity，Shenzhen518055，China;3.CollegeofCivilEngineering，HunanUniversity，Changsha410082，China)Abstract:Theeffectsofhydrogenperoxide(H2O2)andcoppersulfate(Cu2+)onsuppressingalgalbiomassofthewatersamplestakenfromalandscapelakeatShenzhenwithalgalbloomaswellasthevariationsofdissolvedoxygen(DO)，pHandturbidityofthewatersampleswereinvestigated．TheresultsshowthatcombinedaddingH2O2andCu2+significantlysuppressedalgalbiomass．TheChlaconcentrationsofgroupA(adding20mg/LH2O2+0.2mg/LCu2+)，groupB(adding10mg/LH2O2+0.4mg/LCu2+)andgroupC(adding5mg/LH2O2+0.8mg/LCu2+)werereducedto58%，30%and18%ofthecontrollevelonthe7thdayaftertheadditionofH2O2andCu2+．TheresultsindicatedthataddingH2O2remarkablyenhancedthesuppressioneffectsofCu2+onalgalbiomassastheChlaconcentrationofgroupAonthe1stdaywasrapidlyreducedto49μg/L，muchlowerthanthatofjustadding0.2mg/LCu2+(81μg/L)．TheChlaconcentrationofgroupBonthe7thdaywasthesameasthatofjustadding0.6mg/LCu2+，suggestingtheadditionofH2O2mayreducetheCu2+doserequiredforalgalbiomasssuppression．TheadditionofH2O2andCu2+ledtosignificantvariationsinpH(fro