LIJia-ze,WUBao-li,LIUFu-rong,et al.Treatment of Tetracyclines Antibiotics Pharmaceutical Wastewater by BAF Process[J].China Water & Wastewater,2022,38(5):24-31.
BAF工艺深度处理四环素类制药废水研究
- Title:
- Treatment of Tetracyclines Antibiotics Pharmaceutical Wastewater by BAF Process
- Keywords:
- biological aerated filter (BAF); hydraulic retention time (HRT); tetracycline antibiotics; high?throughput sequencing; microbial community
- 摘要:
- 针对市政污水处理厂、制药厂和医院污水处理厂出水中的抗生素残留，采用曝气生物滤池（BAF）工艺进行深度处理。分别建立了两组曝气生物滤池实验装置，研究不同抗生素残留浓度、不同水力停留时间条件下对污染物降解及微生物菌群变化规律。长期实验结果表明，在进水抗生素浓度低于1 mg/L的情况下，COD、氨氮的去除效果稳定，在水力停留时间为10 h时，四环素类抗生素的去除率均在82.5%以上。对BAF中微生物群落的分析表明：投加抗生素后，BAF中微生物种群多样性明显降低。Proteobacteria（变形菌门）是主要的菌群，且丰度变化最大；Alphaproteobacteria（α-变形杆菌纲）、Flavobacteriia（黄杆菌纲）和Betaproteobacteria（β-变形杆菌纲）丰度增加，该菌属可以适应抗生素废水；Acidovorax（嗜酸菌属）和Flavobacterium（黄杆菌属）丰度增加，具有反硝化作用的菌属可优势生长。
- Abstract:
- To investigate the characteristics of antibiotic residues removal in municipal sewage treatment plants, pharmaceutical wastewater treatment plants and hospital sewage treatment facilities, biological aerated filter (BAF) process was built and run under different working conditions. Two sets of BAF columns ran with different antibiotic concentrations and different hydraulic retention time (HRT) respectively, and the pollutants degradation in the effluent were detected. The results of the long?term experiments indicated that when the influent antibiotic concentration was less than 1 mg/L, the removal effect of ammonia nitrogen and COD was stable. When the HRT was 10 hours, the removal rate of tetracycline antibiotics was above 82.5%. Results of high-throughput sequencing showed that at phylum level, Proteobacteria was the main group and had the largest change in abundance. At class level, Alphaproteobacteria, Flavobacteriia and Betaproteobacteria significantly increased in abundance and could adapt to antibiotic wastewater. And at genus level, Acidovorax and Flavobacterium with denitrification function predominated in the system.
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