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Model-based evaluation of algal-bacterial systems for sewage treatment

文献类型：期刊论文

作者Yang, Jixiang1; Li, Zhe1; Lu, Lunhui1; Fang, Fang2; Guo, Jinsong2; Ma, Hua2
刊名JOURNAL OF WATER PROCESS ENGINEERING
出版日期2020-12-01
卷号38页码:9
关键词Algal-bacterial Algae Model Wastewater Sewage
ISSN号2214-7144
DOI10.1016/j.jwpe.2020.101568
通讯作者Yang, Jixiang(jixiang.yang@cigit.ac.cn)
英文摘要Many papers on wastewater treatment by algal-bacterial systems have been published. Current reactor models cannot model the simultaneous removal of organic matter, ammonium and phosphate from an algal-bacterial reactor. Because a powerful theoretical analysis platform is not available, how the consortia function in bioreactors is still not clear. In this study, the activated sludge model NO.3 was extended with a modified algal biokinetics for modeling wastewater treatment by algal-bacterial consortia. The applied model was calibrated and verified by experiments. The model shows that phosphate accumulating organisms (PAOs) and nitrifying bacteria consumed over 80% of phosphate and 60% of ammonium under different aeration conditions, respectively, whereas algae played a minor role in removing nutrients. In addition, the model shows that maintaining alkalinity at 1 mol/m(3) (100 mg/L CaCO3) can significantly promote nutrient removal by increasing activities of PAOs and nitrifying bacteria, despite that algae consume less nutrients. Light intensity decreased quickly in suspended algal-bacterial consortia, which was accurately modelled. Compared with algae, bacteria played a more significant role in reducing light intensity. A defined light utilization efficiency decreased by 50% when doubling biomass concentration, showing that concentrated biomass should not be applied at large-scale when artificial illumination is applied. The model predicts that efficient wastewater treatment by algal-bacterial consortia at a biomass concentration of approximately 1 g/L can be achieved in eight hours under non-aerated conditions. This study proved that biological wastewater treatment by algal-bacterial consortia can be modeled, while heterotrophic bacteria, nitrifying bacteria, PAOs and algae simultaneously function in the consortia. The model can be a useful tool to study and optimize algal-bacterial reactors.
资助项目Youth Innovation Promotion Association[2019375] ; Key Research Project from Chongqing City[cstc2018jszx-zdyfxmX0013]
WOS研究方向Engineering ; Water Resources
语种英语
WOS记录号WOS:000598142400004
出版者ELSEVIER
源URL[http://119.78.100.138/handle/2HOD01W0/12673]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Yang, Jixiang
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China
2.Chongqing Univ, Coll Environm & Ecol, Chongqing, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Jixiang,Li, Zhe,Lu, Lunhui,et al. Model-based evaluation of algal-bacterial systems for sewage treatment[J]. JOURNAL OF WATER PROCESS ENGINEERING,2020,38:9.
APA Yang, Jixiang,Li, Zhe,Lu, Lunhui,Fang, Fang,Guo, Jinsong,&Ma, Hua.(2020).Model-based evaluation of algal-bacterial systems for sewage treatment.JOURNAL OF WATER PROCESS ENGINEERING,38,9.
MLA Yang, Jixiang,et al."Model-based evaluation of algal-bacterial systems for sewage treatment".JOURNAL OF WATER PROCESS ENGINEERING 38(2020):9.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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