电Fenton耦合过硫酸盐强化DT-3的降解效能  

Enhanced Decomposition of DT-3 Contaminated Wastewater Using Electro-Fenton Coupled Persulfate

作　　者：周振 马文 方小军 孔慧 张统[1] 姚吉伦 ZHOU Zhen;MA Wen;FANG Xiaojun;KONG Hui;ZHANG Tong;YAO Jilun(State Key Laboratory of Technologies in Space Cryogenic Propellants,Beijing Special Engineering Design and Research Institute,Beijing 100028,China;Engineering and Technological Research Center of National Disaster Relief Equipment,Army Logistics University,Chongqing 401311,China)

机构地区：[1]北京特种工程设计研究院航天低温推进剂技术国家重点实验室,北京100028 [2]陆军勤务学院国家救灾应急装备工程技术研究中心,重庆401311

出　　处：《水处理技术》2023年第5期80-84,共5页Technology of Water Treatment

基　　金：国家重点研发计划(2017YFC0806305);水体污染控制与治理科技重大专项(2013ZX07312-001)。

摘　　要：为探索DT-3推进剂废水的降解新方法,采用电Fenton耦合过硫酸盐强化DT-3的去除。优化了DT-3降解过程中的Na_(2)S_(2)O_(8)与DT-3摩尔比浓度、电流强度、初始pH及初始DT-3浓度,获得了最优运行工况:在Na_(2)S_(2)O_(8)与DT-3摩尔比浓度为1.35、电流强度0.11 A、初始pH=3时,20 min内能去除148 mg/L DT-3的99.8%、COD去除率84.5%。·OH是电Fenton耦合过硫酸盐强化DT-3降解体系中的主导活性自由基。该研究对于现场DT-3推进剂废水的工业化设计及运行具有借鉴意义。To probe new technique in enhance DT-3 decomposition,electro-Fenton enhanced persulfate technique was employed.Factors encompassed Na_(2)S_(2)O_(8)/DT-3 mole ratio,current intensity,initial pH,and initial DT-3 dosage that affected the decomposition capacity of DT-3 were examined.It was found that over 99.8%DT-3 and 84.5%COD were eliminated in the optimum circumstance within 20 min when the Na_(2)S_(2)O_(8)/DT-3 mole ratio,current intensity,initial pH and DT-3 dosage was 1.35,0.11 A,pH=3 and 148 mg/L,respectively.Radical-trapping experiment authenticated that·OH was the predominant radicals in the electro-Fenton/Na_(2)S_(2)O_(8) system.The results of present study will be crucial in contrivance and operation of an industrial treatment of DT-3 contaminated wastewater.

关 键 词：过硫酸盐 DT-3 电FENTON 物种分布 

分 类 号：V511[航空宇航科学与技术—航空宇航推进理论与工程] X703[环境科学与工程—环境工程]