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Study on the treatment of synthetic domestic sewage by membrane aeration bioreactor (MABR)

Authors： DING Guoliang1, CHENG Qibo1,ZHAO Jingwei1, Lü Zhenhua1, 2, YU Sanchuan2, *

Units： 1. Hangzhou Tianchuang Environmental Technology Co., LTD. Hangzhou, 311121, China; 2. School of Science, Zhejiang Sci-Tech University, Hangzhou, 310018, China.

KeyWords： Membrane aerated bioreactor (MABR); PVDF hollow fiber membrane; Carbon and nitrogen removals; Biofilm; Synthetic domestic sewage

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2020,40(5):95-100

Abstract：

In this study, membrane aeration bioreactor (MABR) was constructed using polyvinylidene fluoride (PVDF) hollow fiber membrane module and was employed to treat synthetic domestic sewage under different aeration pressure, pH, circulating flow and C/N ratio. The microorganisms of MABR were analyzed in terms of Alpha diversity, species community richness and community composition. It was found that the constructed MABR could effectively remove COD, ammonia nitrogen and total nitrogen from domestic sewage. Under the conditions of aeration pressure=0.6 bar, pH=8.0, circulating flow=90 mL/min and C/N=5.0, the constructed MABR attained its optimal efficiency, showing COD, ammonia nitrogen (NH4+-N) and total nitrogen (TN) removals of 95.4%, 79.6% and 71.8%, respectively. The results of microbial analysis revealed that the biofilm of MABR under optimum conditions possessed higher microbial community richness and diversity, and the main microbials of biofilm were Saccharimonadia and Gammaproteobacteria on Class level. The constructed MABR exhibits good performance in treatment of domestic sewage and potential value in practical application.

Funds：

浙江省重点研发计划项目（2020C03081）

AuthorIntro：

丁国良（1973—），男，浙江金华人，工程师，研究方向为膜法水处理技术；联系电话：0571-88620831；E-mail：dgl1973@163.com

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