反渗透技术在氨氮废水处理中的应用研究

*易秀1，2田浩1刘意竹1叶凌枫1侯燕卿1王育科31.7100542.7100543.710054。11.0～1.4MPa0.10MPa4.8～5.0MPa0.10MPa2SDI43150μs/cmTDS50mg/L4pH。pH＜710mg/L。DOI10.13205/j．hjgc．201409001APPLICATIONOFＲEVEＲSEOSMOSISTECHNOLOGYINTHETＲEATMENTOFNITＲOGENWASTEWATEＲYiXiu12TianHao1LiuYizhu1YeLingfeng1HouYanqin1WangYuke31.CollegeofEnvironmentalScienceandEngineeringChang'anUniversityXi'an710054China2.KeyLaboratoryofSubsurfaceHydrologyandEcologyinAridAreasMinistryofEducationXi'an710054China3.ShaanxiProvinceEnvironmentalMonitoringCenterXi'an710054ChinaAbstractTakingammonianitrogenwastewaterfromnanometerzincoxideindustryasanobjectreverseosmosistechnologywasusedtotreatitandtheproductionwatercouldrecycletoproductionprocess．Theresultsshowedthat1Processingunitofreverseosmosiswouldrunstablywhenoperatingpressureofthefirstreverseosmosissystemstabilizedbetween1.0MPaand1.4MPaandpressuredifferenceoffeedwaterandproductionwaterwaswithin0.10MPaandoperatingpressureofthesecondaryreverseosmosissystemstabilizedbetween4.8MPaand5.0MPaandpressuredifferencewaswithin0.10MPa．2AfterthetreatmentofflocculatingandtwostagesofsandfiltertheSDIofwastewaterwaslessthan4whichcouldmeettherequirementsoffeedwaterinreverseosmosissystemsoitwasnotnecessarytotakeultra-filtrationasthepretreatmentofreverseosmosis．3Conductivityofproductionwaterofthefirstreverseosmosiswaslessthan150μs/cmandTDSwaslessthan50mg/Linthesecondaryreverseosmosiswhichmetthestandardsofrecyclewaterinproductionprocessofnanometerzincoxide．4pHinfluenceddirectlythequalityoftreatingflushingwastewater．WhilepHofwastewaterwasadjustedlessto7thereverseosmosissystemwasmoststableintheprocessoftreatingammonianitrogenwastewaterandammonianitrogencontentofproductionwatercouldbecontrolledwithin10mg/L．Keywordsammonianitrogenwastewaterreverseosmosistechnologynanometerzincoxiderecycleutilization*51378067201301084B08039。2013－11－26、1-4。、、、、、、1WaterPollutionControl5-6。。1t45t1000mg/L。7-10。11-13、。11.1试验工艺流程。20m3/h10%。3。50%。、、、、。。1。1Fig．1Theflowchartofpilot-scaleproductionprocesses1.2纳米氧化锌工艺冲洗废水成分分析、、、、。。1。、、、COD5.44100311145.2mg/LGB8978—1996《》、、2.72、75.31.58。1Table1Determinationresultsofflushingwastewaterofnanometerzincoxidemg/LρCa2+ρMg2+ρZn2+ρFe2+ρSiO2ρCO2ρNH3－NρCO2－320.38.245.44＜0.053.4915710030ρHCO－3ρSO2－4CaCO3CaCO3ρCODρ781263584.5641489245.2111381.3试验设计负荷及出水水质指标TDS4000～7000mg/L。、TDS、、SDIpH。400μs/cmρ＜100mg/L。22.1设备运行参数2.1.1。、。0.08MPa1114。1。0.38MPa0.19MPa0.26MPa0.10MPa0.19MPa0.08MPa。。。2EnvironmentalEngineering、。0.08MPa。2。TDS6000mg/L15℃0.85151.60MPa。1.00MPa1.40MPa0.10MPa。3。5.0MPa4.90MPaTDS。36000mg/L15000mg/L5000mg/L16。2.1.21.6～1.8m3/h。。90%90%。、50%、1.2～1.7m3/h0.42～0.48m3/h。2.2废水处理效果2.2.1SDISDISDI6.7SDISDISDI4。2.2.2TDSTDS。2、。2Table2DesalinationrateandproductionwaterqualityoffirstandsecondaryreverseosmosisTDS/mg·L－1/μs·cm－1/%TDS/mg·L－1TDS/mg·L－1/%1650011598.82130002799.802750011099.02150002699.833620010098.92125002499.81462709798.97120002899.73561209998.92115003099.686701013398.73145002999.807425013697.869240——8650013798.59100004499.56943007699.8896302999.7010475012298.2991004699.5011640011699.09127004099.691261007899.15125002099.841345607398.9310800——1461309398.9913100——15560010598.7511000——1660007999.1211400——3WaterPollutionControl298%150μs/cm137μs/cm73μs/cm。400μs/cm。TDSTDS2∶150%1。。12。298%99.84%TDS50mg/L46mg/L20mg/L。TDS。2.2.3pH1。3。3820mg/L843.76mg/L25.61mg/L。。3Table3Ammonianitrogencontentinreverseosmosisproductionwatermg/L49.166.6957.825.20614.005.08713.11—843.7625.6196.795.551011.3010.40119.66—126.443.90135.824.50146.83—1510.48—165.43—800～1200mg/L98%。2pH。pH2pH7.74～8.49pHpHpH4.8210.03CO2NH317-18pH＜7pH＞7。CO2+H2OHCO－3+H+1NH3+H2ONH+4+OH－22pHFig．2ChangedtrendofpHinfirstreverseosmosissystem1HCO－3HCO－3HCO－31CO2CO2HCO－399%171H+pH。1CO2pHpHpHpHCO2pH。HCO－3CO2HCO－3TDS。pH3、4。NH+42NH32OH－pH。24EnvironmentalEngineeringNH3pHpHNH3pHpHNH3pH。3pHFig．3ChangedtrendofpHandammonianitrogencontentinfirstreverseosmosisproductionwater4pHFig．4ChangedtrendofpHandammonianitrogencontentinsecondaryreverseosmosisproductionwater3pH。pH56pHpHpH。58pH＞8ρ40mg/L。pH＜710mg/L。6pH。pH7。311.0～1.4MPa0.10MPa4.8～5.0MPa5pHFig．5pHoffeedwaterandammonianitrogenofproductionwaterinfirstreverseosmosis6pHFig．6pHoffeedwaterandammonianitrogenofproductionwaterinsecondaryreverseosmosis0.10MPa。2SDI4。398%150μs/cm99%TDS50mg/L。4pHpH。pH710mg/L。1．AOMBＲJ．200733868-71.2．J．2007255102-104.3．MBBＲJ．201127390-93.105WaterPollutionControlgrowthusinghomogenizationdisruptionJ．BioresourceTechnology201313443-50.19HeMHWeiCH．PerformanceofmembranebioreactorMBＲsystemwithsludgeFentonoxidationprocessforminimizationofexcesssludgeproductionJ．JournalofHazardousMaterials2010176597-601.20HosseinHJalalS．UpgradingactivatedsludgesystemsandreductioninexcesssludgeJ．BioresourceTechnology201110210327-10333.21XingCHYamamotoKFukushiK．Performanceofaninclined-platemembranebioreactoratzeroexcesssludgedischargeJ．JournalofMembraneScience2006275175-186.22ChudobaPMorelACapdevilleB．ThecaseofbothenergeticuncoupleingandmetabolicselectionofmicroorganismsintheOSAactivatedsludgesystemJ．EnvironmentalTechnology1992138761-770.23SabySDjaferMChenGH．EffectoflowOＲPinan