基质浓度对ABR-MBR短程反硝化除磷工艺效能的影响  

Effect of substrate concentration on the efficiency of ABR-MBR partial denitrifying phosphorus removal process

作　　者：韦佳敏 沈耀良[2] 黄慧敏 蒋志云 刘文如 WEI Jiamin;SHEN Yaoliang;HUANG Huimin;JIANG Zhiyun;LIU Wenru(School of Chemical and Environmental Engineering,Jiangsu University of Technology,Changzhou 213001,China;School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;WELLE Environmental Technology Group Co.Ltd.,Changzhou 213125,China)

机构地区：[1]江苏理工学院化学与环境工程学院,常州213001 [2]苏州科技大学环境科学与工程学院,苏州215009 [3]维尔利环保科技集团股份有限公司,常州213125

出　　处：《环境工程学报》2021年第3期939-945,共7页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51578353)。

摘　　要：以低C/N值生活污水为处理对象,重点考察了基质浓度对厌氧折流板反应器-膜生物反应器(ABRMBR)系统短程反硝化除磷效能的影响。结果表明:控制C/N/P值不变,逐步提高进水基质浓度,在工况A、B、C和D下所对应的ABR容积负荷(VLR,以COD计)分别为1.02、1.53、2.04和2.55 kg·(m^(3)·d)^(−1);在MBR反应器中,通过游离氨(FA)选择性抑制亚硝酸盐氧化菌(NOBs),使得氨氧化菌(AOBs)逐渐成为优势菌群,亚硝酸盐积累率(NAR)稳定在61.7%;通过逐步驯化DPBs对NO_(2)^(-)-N的耐受能力,以实现不同微生物的协同作用,优化系统的稳定运行。在ABR容积负荷为2.55 kg·(m^(3)·d)^(−1)时,游离亚硝酸(FNA)为0.0013 mg·L^(−1),对DPBs产生了严重抑制作用,吸磷效果降至最低。The effect of substrate concentration on the efficiency of partial denitrifying phosphorus removal in an anaerobic baffled reactor-membrane bioreactor(ABR-MBR)system treating low C/N domestic wastewater was investigated.Results showed that at a constant C/N/P value,the gradual increase of the substrate concentration resulted in the ABR volume loading rates(VLR)as follows:1.02,1.53,2.04 and 2.55 kg·(m^(3)·d)^(−1),which corresponded to the operating conditions A,B,C and D,respectively.In the MBR,free ammonia(FA)was used to selectively inhibit nitrite oxidizing bacteria(NOBs),and then ammonia oxidizing bacterias(AOBs)gradually became the dominant flora,and the nitrite accumulation rate(NAR)stably reached 61.7%.By gradually domesticating the tolerance of DPBs to NO_(2)^(-)-N,the synergistic effects of different microorganisms occurred and the stable running of the system was optimized.At the ABR volume load rate of 2.55 kg·(m^(3)·d)^(−1),the free nitrous acid(FNA)of 0.0013 mg·L^(−1) had a serious inhibitory effect on DPBs,and minimized the phosphorus absorption effect.

关 键 词：反硝化除磷 基质浓度 游离亚硝酸 游离氨 亚硝酸盐积累率 

分 类 号：X52[环境科学与工程—环境工程]