title: Comparative study of wastewater treatment and nutrient recycle via activated sludge, microalgae and combination systems.
abstract: Algal-bacterial synergistic cultivation could be an optional wastewater treatment technology in temperate areas. In this study, a locally screened vigorous Chlorella strain was characterized and then it was used in a comparative study of wastewater treatment and nutrient recycle assessment via activated sludge (AS), microalgae and their combination systems. Chlorella sp. cultured with AS in light showed the best performance, in which case the removal efficiencies of COD, NH3-N and TP were 87.3%, 99.2% and 83.9%, respectively, within a short period of 1day. Algal-bacterial combination in light had the best settleability. Chlorella sp. contained biomass, could be processed to feed, fertilizer or fuel due to the improved quality (higher C/H/N) compared with sludge. PCR-DGGE analysis shows that two types of rhizobacteria, namely, Pseudomonas putida and Flavobacterium hauense were enriched in sludge when cultured with algae in light, serving as the basics for artificial consortium construction for improved wastewater treatment.
authors.affiliation: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: Jinli
authors.initials: J
authors.lastname: Liu
authors.affiliation: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: Quanyu
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wei
authors.affiliation: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; ShanghaiTech University, 319 Yueyang Road, Shanghai 200031, China. Electronic address: sunyh@sari.ac.cn.
authors.forename: Yuhan
authors.initials: Y
authors.lastname: Sun
mesh_terms: D018533:Biomass; D002708:Chlorella / Q000378:metabolism*; D005417:Flavobacterium / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D058086:Microalgae / Q000378:metabolism*; D009584:Nitrogen / Q000032:analysis; D016958:Pseudomonas putida / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D059027:Recycling; D012722:Sewage / Q000382:microbiology*; D018505:Waste Management / Q000379:methods*; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology
chemical_list: D009584:Nitrogen; D012722:Sewage; D062065:Wastewater
keywords: Activated sludge; Microalgae; Nutrient recycle; Rhizobacteria; Wastewater treatment