Departamento de Ingeniería Química y Tecnología Farmacéutica, Universidad de La Laguna, Astrof. Fco. Sanchez s/n, 38200 La Laguna, Spain.
Departamento de Ingeniería Química y Tecnología Farmacéutica, Universidad de La Laguna, Astrof. Fco. Sanchez s/n, 38200 La Laguna, Spain.
Bioresour Technol. 2017 Sep;239:528-532. doi: 10.1016/j.biortech.2017.05.042. Epub 2017 May 10.
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.
厌氧膜生物反应器在废水处理领域受到越来越多的关注。然而，废水中大量的有机物、氮和硫化物可能限制其再利用。提出了一种基于光合细菌的膜生物反应器来进一步处理这种废水。一个户外中试规模的单元运行了 900 多个小时，以评估在短水力停留时间下的工艺性能。在初始生物量发展之后，实现了可溶性有机物和氮的同时去除（分别为 65%和 39%）。此外，在渗透物中检测到大量的硫酸盐，表明明显的硫化物氧化。尽管生物悬浮液中生物聚合物簇的积累，通过空气辅助反冲洗有效地减轻了膜污染，实现了可持续的运行。鉴定出了几种细菌，包括兼性光合细菌红假单胞菌和硝化反硝化细菌黄杆菌。
