Fe/AC內电解-H_2O_2联合技术降解浮选废水中苯胺黑药  

Degradation of dianilino dithiophosphoric acid in flotation wastewater by Fe/AC IME-H_2O_2 process

作　　者：李天国[1,2] 韩振宇[1] 徐晓军[1] 刘树丽[1] 聂蕊[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500 [2]云南农业大学资源与环境学院,昆明650500

出　　处：《环境工程学报》2016年第9期4919-4926,共8页Chinese Journal of Environmental Engineering

基　　金：云南省教育厅科学研究基金项目(2013Y327);昆明理工大学分析测试基金(20140550;20150460);云南睿锦环保科研奖学金支持项目

摘　　要：研究了Fe/AC內电解-H_2O_2联合技术在降解浮选废水中浮选药剂苯胺黑药（DDA）的效果及可行性。通过正交和单因素实验,考察了其工艺条件参数对DDA和COD处理效果的影响。结果表明,在初始p H=3,Fe/AC质量比为2∶1,H_2O_2投加量为0.6 mmol·L-1,Fe/AC IME和Fenton氧化工段HRT分别为60 min和20 min的条件下,模拟废水DDA和COD浓度由200 mg·L-1、395 mg·L-1分别降至28.7 mg·L-1和32.9 mg·L-1,去除率分别高达85.6%和91.7%。Fe/AC IME-H_2O_2连续处理实际浮选废水（COD 880～910 mg·L-1）96 h后,COD去除率仍维持在88.0%以上,残留浓度低于《污水综合排放标准》（GB 8978-1996）二级标准值。The feasibility and efficiency of the Fe/AC internal micro-electrolysis/H2O2 （Fe/AC IME- H2O2） process for the degradation of dianiline dithiophosphoric acid （DDA） in flotation wastewater was investi- gated. With the aid of orthogonal and single factor experiments, the influence of process parameters on the re- moval of DDA and COD was discussed. Results indicate that the concentrations of DDA and COD in simulated wastewater decreased from 200 mg· L-1 and 395 mg ·L-1 to 28.7 mg· L-1 and 32.9 mg· L-1, respectively. Furthermore, a removal efficiency of DDA and COD of 85.6 and 91.7% , respectively, was achieved with a pH of 3, Fe/AC mass ratio of 2： 1, dosing quantity of 0.6 mmol· L-1 H202, and a hydraulic retention time （HRT） of the Fe/AC IME and Fenton-oxidation sections of 60 min and 20 rain, respectively. The removal efficiency of COD in actual flotation wastewater with a COD of 880 to 910 mg· L-1 could reach as high as 88.0% after 96 h of continuous Fe/AC IME-H202 processing. The residual concentration of COD in the outlet wastewater satisfied the secondary standard of the Integrated Wastewater Discharge Standard of China （ GB 8978-1996）.

关 键 词：浮选废水 苯胺黑药 Fe/AC内电解-H2O2 降解 

分 类 号：X703[环境科学与工程—环境工程]