中文关键词
反硝化除磷(DPR)部分亚硝化(PN)厌氧氨氧化(ANAMMOX)耦合脱氮除磷 英文关键词denitrifying phosphorus removal(DPR)partial nitritation(PN)anaerobic ammonium oxidation(ANAMMOX)couplingnitrogen and phosphorus removal |
作者 | 单位 | E-mail | 陈亚 | 苏州科技大学环境科学与工程学院, 苏州 215009 | m15862351567@163.com | 印雯 | 苏州科技大学环境科学与工程学院, 苏州 215009 | | 张星星 | 苏州科技大学环境科学与工程学院, 苏州 215009 | | 张钰 | 苏州科技大学环境科学与工程学院, 苏州 215009 | | 宋吟玲 | 苏州科技大学环境科学与工程学院, 苏州 215009 城市生活污水资源化利用技术国家地方联合工程实验室, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009 | 807118983@qq.com | 吴鹏 | 苏州科技大学环境科学与工程学院, 苏州 215009 城市生活污水资源化利用技术国家地方联合工程实验室, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009 | | 徐乐中 | 苏州科技大学环境科学与工程学院, 苏州 215009 城市生活污水资源化利用技术国家地方联合工程实验室, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009 | |
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中文摘要 |
采用厌氧折流板反应器与完全混合反应器(ABR-CSTR)组合的一体式工艺作为试验载体,在连续流的运行条件下,针对低碳高氨氮(NH4+-N ≥ 200mg·L-1)污水,将不同隔室内的普通厌氧污泥驯化培养为分别具有反硝化除磷、部分亚硝化和厌氧氨氧化功能,以实现三者功能的耦合.A4(CSTR)段通过限氧(DO=0.8 mg·L-1)和间歇曝气(曝:停比=30 min:30 min)的方式经过30 d成功实现部分亚硝化的启动.随后进一步采取缩短水力停留时间(HRT)的方式实现部分亚硝化的稳定运行,为厌氧氨氧化提供了NO2--N/NH4+-N为1.0~1.1的稳定进水基质.A5和A6隔室运行154 d后实现了厌氧氨氧化功能,NH4+-N和NO2--N的去除率分别为94%和97%,其出水中NO3--N浓度稳定在22 mg·L-1左右.A1~A3隔室利用回流中的NOx--N作为电子受体成功实现了反硝化除磷功能,PO43--P的去除率为77%.一体式工艺经过175d成功耦合,实现了碳、氮和磷的同步高效去除. |
英文摘要 |
An integrated process uses an anaerobic baffled reactor combined with a fully mixed reactor (ABR-CSTR) as a test carrier for low-carbon, high-ammonia nitrogen (NH4+-N ≥ 200 mg·L-1) wastewater under continuous flow operating conditions; the normal anaerobic sludge in different compartments is subjected to domestication and cultivation to realize denitrifying phosphorus removal, partial nitritation, and anaerobic ammonium oxidation, thereby achieving the coupling effect of the three. Partial nitritation was successfully achieved in the A4 (CSTR) section by the strategy of limited oxygen (dissolved oxygen DO=0.8 mg·L-1) and intermittent aeration (exposure ratio=30 min:30 min) after 30 days. Subsequently, a strategy of shortening the hydraulic retention time (HRT) was adopted to achieve a stable operation of partial nitritation, and a stable influent substrate of NO2--N/NH4+-N 1.0-1.1 was provided for anaerobic ammonium oxidation. The anaerobic ammonium oxidation function was achieved after 154 days in the A5 and A6 compartments. The removal rates of NH4+-N and NO2--N were 94% and 97%, respectively, and the NO3--N concentration in the effluent was stable at 22 mg·L-1. The denitrifying phosphorus removal function was successfully achieved in the A1-A3 compartments by using NOx--N in the reflux as an electron acceptor. The removal rate of PO43--P was 77%. The integrated process was successfully coupled through 175 days, achieving simultaneous removal of C, N, and P. |
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