生物反应器
流出物
膜生物反应器
膜污染
污水处理
水力停留时间
反硝化细菌
化学
废水
制浆造纸工业
细菌
硝化细菌
反硝化
膜
生物
硝化作用
环境工程
结垢
氮气
环境科学
生物化学
有机化学
工程类
遗传学
作者
Enrique González,Oliver Díaz,Ignacio Ruigómez,Caterina Rodríguez de Vera,Luis Rodríguez-Gómez,Juan Rodríguez-Sevilla,Luisa Vera
标识
DOI:10.1016/j.biortech.2017.05.042
摘要
Anaerobic membrane bioreactors have attracted increasing interest in the field of wastewater treatment. However, significant amounts of organic matter, nitrogen and sulphide in the effluent may limit its reuse. A photosynthetic bacteria-based membrane bioreactor is proposed for the further treatment of this effluent. A pilot-scale unit was run outdoor for over 900h to assess the process performance at short hydraulic retention time. After an initial biomass development, simultaneous removal of soluble organic matter and nitrogen was achieved (65% and 39%, respectively). In addition, a significant concentration of sulphate was detected in the permeate, revealing an evident sulphide oxidation. Despite the accumulation of biopolymer clusters in the biological suspension, membrane fouling was effectively mitigated by air-aided backwashing, allowing a sustainable operation. Several strains of bacteria were identified including the photoheterotrophic bacteria Rhodopseudomonas sp. and the nitrifying and denitrifying bacteria Chryseobacterium sp.
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