[1]孙宇明,胡金玲,姜雪松,等.微生物电解组合工艺降解酸性红73废水研究[J].中国给水排水,2021,37(17):86-93.
SUN Yu-ming,HU Jin-ling,JIANG Xue-song,et al.Degradation of Acid Red 73 Wastewater by Microbial Electrolysis Combined Process[J].China Water & Wastewater,2021,37(17):86-93.
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SUN Yu-ming,HU Jin-ling,JIANG Xue-song,et al.Degradation of Acid Red 73 Wastewater by Microbial Electrolysis Combined Process[J].China Water & Wastewater,2021,37(17):86-93.
微生物电解组合工艺降解酸性红73废水研究
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第37卷
期数:
2021年第17期
页码:
86-93
栏目:
出版日期:
2021-09-01
- Title:
- Degradation of Acid Red 73 Wastewater by Microbial Electrolysis Combined Process
- Keywords:
- microbial electrolysis; aerobic biochemical treatment; Fenton oxidation; acid red 73; aniline
- 摘要:
- 利用微生物电解(MEC)组合工艺处理酸性红73（AR73）废水，该组合工艺包括微生物电解、好氧生化、Fenton氧化，分析各工艺单元对AR73、COD、色度的去除效果及脱氮效能，并将MEC/O与传统A/O进行对比，重点考察好氧段NO2--N和NO3--N的变化及对苯胺的去除效果。结果表明，组合工艺对AR73、COD、苯胺、色度的去除率分别为98.97%、86.5%、99%、90%。当进水AR73浓度低时，MEC/O的AR73生成率为进水AR73浓度的3%～5%，表现出更低的再偶合性。A/O中NO2--N/NO3--N值为151.1%～380.97%，MEC/O中NO2--N/NO3--N值为0～84.24%。与A/O对比，MEC/O对硝化菌的抑制作用更小。当苯胺超过24 mg/L时，氨氮的氧化率最低。引入Fenton氧化法后，在去除微量苯胺的同时，色度大幅降低，可减少后续活性炭投量。
- Abstract:
- The microbial electrolysis combined process composed of microbial electrolysis, aerobic biochemical treatment and Fenton oxidation, was employed to treat the acid red 73 (AR73) wastewater. The removal efficiencies of AR73, COD and chromaticity and denitrification performance in each treatment unit were investigated. The performance of the MEC/O process was compared with that of the traditional A/O process, and the variations in concentrations of NO2--N and NO3--N and the removal efficiency of aniline in the aerobic stage were mainly investigated. The results showed that the removal efficiencies of AR73, COD, aniline and chromaticity were 98.97%, 86.5%, 99% and 90%, respectively. When the concentration of AR73 in the influent was low, the generation rate of AR73 in the MEC/O process was between 3% and 5% of AR73 concentration of influent, indicating that it had a lower recoupling. The ratio of NO2--N/NO3--N was between 151.1% and 380.97% in the A/O process, and that was between 0 and 84.24% in the MEC/O process. Compared with A/O process, MEC/O process had a smaller inhibitory effect on nitrifying bacteria. When the concentration of aniline was greater than 24 mg/L, the ammonia nitrogen oxidation rate was the lowest. After the introduction of Fenton oxidation process, the chromaticity was greatly reduced while the trace aniline was removed, and the dosage of the activated carbon was reduced in the subsequent process.
更新日期/Last Update:
2021-09-01