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Evaluation of microplastic polyvinylchloride and antibiotics tetracycline co-effect on the partial nitrification process
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2020-09-18 , DOI: 10.1016/j.marpolbul.2020.111671
Lu Li , Dan Liu , Zhouyang Li , Kang Song , Yanjiao He

This study investigated the co-effect of microplastic polyvinylchloride and antibiotics tetracycline to partial nitrification process in treating high ammonia wastewater. The average ammonia oxidation rate of all reactors was 53.58, 56.17 and 42.08 mg·N/L·h in round 1, round 7 and round 13, respectively. The ammonia oxidation rate was reduced to 89.40%, 79.08%, 80.60%, 73.37%, 69.50%, 75.72%, 98.93% and 66.04% from 1st round of test to 13th round of test at reactor R1 to R8. The average nitrosation rate was always over 80% in all conditions tested. Tetracycline removal rate was attributed to sludge adsorption in all reactors and was increased continuously with the increment of tetracycline concentration. The nitrous oxide emission was keep decreasing from round 1 to round 13 in all reactors tested. The microbial community results revealed that with the existence of tetracycline and microplastics, the relative abundance of Bacteroidetes were reduced and Proteobacteria were increased.



中文翻译:

微量聚氯乙烯和抗生素四环素对部分硝化过程的协同作用评估

这项研究调查的合作微聚氯乙烯和抗生素四环素对部分硝化工艺处理高氨废水的效果 在第1轮,第7轮和第13轮中,所有反应器的平均氨氧化速率分别为53.58、56.17和42.08 mg·N / L·h。从反应器R1至R8的第一轮测试至第13轮测试,氨氧化速率降低至89.40%,79.08%,80.60%,73.37%,69.50%,75.72%,98.93%和66.04%。在所有测试条件下,平均亚硝化率始终超过80%。四环素去除率归因于所有反应器中的污泥吸附,并且随着四环素浓度的增加而连续增加。在所有测试的反应器中,一氧化二氮的排放量从第1轮一直减少到第13轮。拟杆菌减少,变形杆菌增加。

更新日期:2020-09-20
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