State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioresour Technol. 2018 Mar;251:311-319. doi: 10.1016/j.biortech.2017.12.048. Epub 2017 Dec 18.
This study combined sludge MBR technology with algae to establish an effective wastewater treatment and low membrane fouling system (ASB-MBR). Compared with control-MBR (C-MBR), the amelioration of microbial activity and the improvement of sludge properties and system environment were achieved after introducing algae resulting in high nutrients removal in the combined system. Further statistical analysis revealed that the symbiosis of algae and sludge displayed more remarkable impacts on nutrients removal than either of them. Additionally, membrane permeability was improved in ASB-MBR with respect to the decreased concentration, the changed of characteristics and the broken particular functional groups of extracellular polymeric substances (EPSs). Moreover, the algae inoculation reduced sludge diversity and shifted sludge community structure. Meantime, the stimulated bacteria selectively excite algal members that would benefit for the formation of algal-bacterial consortia. Consequently, the stimulated or inhibited of some species might be responsible for the performance of ASB-MBR.
本研究将污泥膜生物反应器（MBR）技术与藻类相结合，建立了一种有效的废水处理和低膜污染系统（ASB-MBR）。与对照 MBR（C-MBR）相比，引入藻类后，改善了微生物活性，提高了污泥特性和系统环境，从而在组合系统中实现了高养分去除。进一步的统计分析表明，藻类和污泥的共生对养分去除的影响比单一因素更为显著。此外，ASB-MBR 中的膜透过性得到了改善，这是由于胞外聚合物（EPS）的浓度降低、特性改变和特定功能基团的断裂所致。此外，藻类接种减少了污泥多样性，并改变了污泥群落结构。同时，被刺激的细菌选择性地激发藻类成员，这有利于藻类-细菌共生体的形成。因此，ASB-MBR 的性能可能与某些物种的刺激或抑制有关。
