中水水源循环水排污水难降解有机物去除的试验研究

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关键词：循环水排污水；芬顿氧化法；中水；难降解有机物

中图分类号：X773 文献标识码：A 文章编号：1008-9500（2025）07-0018-05

DOI： 10.3969/j.issn.1008-9500.2025.07.06

Experimental Study on Removal of Recalcitrant Organic Compounds in Wastewater Discharged from Recirculating Water in Reclaimed Water Source

ZHANG Lixin'，XUJun'，LIZiang'，LIRuirui²，XIE Zhouhua²，FUQinxue'，ZENGXiaing 1 ，LEISuyu 1 （1.Guoneng Shenhua Jiujiang Power Generation Co.，Ltd.，Jiujiang332oOo， China; 2.Xi'an Thermal Power Research Institute Co.，Ltd.，Xi'an 710054，China）

Abstract： In order to actively promote thereuse of wastewaterresources，power plantsare graduallyadopting urban reclaimed waterasasupplementary water sourcefor the circulating water system.Afterreducing theamount of wastewater dischargedfromcirculating water，itisreused，however，itswaterqualityispor，withighhardnesslkalinityand recalcitrantorganiccompoundscontent，withoutpretreatment，itcan lead toscalingandseverefouling inthemembrane treatment system，seriouslyaffecting thesafeand stableoperationof thesystem.Atpresent，conventional biological treatment processes have poor removal eficiency for recalcitrant organic compounds inreclaimed water.The Fenton advancedoxidationmethod isused toefectivelyremoverecalcitrantorganiccompounds fromthewastewaterofrecycled water sources，withafocus onstudying theoptimal process conditions forthemain influencingfactors.Thetestresults show that the pH value of wastewater before reaction is about 4，the dosage of H2O2 is 2mL/L ，the dosage of FeSO4⋅7H2 is 0.90g/L ，the total reaction time is controlled at 1.5h ，and the reaction temperature is controlled at ，when the pH value of wastewater isadjustedto5after reaction，theconcentrationof Total Organic Carbon （TOC）inthe supernatant after treatment is 12.38mg/L ，and the removal rate isashigh as 67.08% ，which can meet the requirements of influent water qualityof membrane system.Aftercalculation，thecostofthepre-treatment processper tonof waterchemicals is approximately O.94 yuan/t， which has good economic and environmental benefits.

Keywords：wastewaterdschargedfromeiculatingaterFentonodatiomethod;cycledwaterecalcitantorgancoounds

循环水排污水占循环冷却型火电厂总废水量的80% 左右，是该类型火电厂节水减排的关键，对其进行处理回用可大幅降低新鲜水取水量。（剩余5032字）