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Advanced wastewater treatment with microalgae-indigenous bacterial interactions

作     者:Xue Li Shengnan Li Peng Xie Xi Chen Yuhao Chu Haixing Chang Jian Sun Qing Li Nanqi Ren Shih-Hsin Ho 

作者机构:State Key Laboratory of Urban Water Resource and EnvironmentSchool of EnvironmentHarbin Institute of TechnologyHarbin150090PR China College of Chemistry and Chemical EngineeringChongqing University of TechnologyChongqing400054PR China Central Southern China Municipal Engineering Design and Research Institute Co.LtdWuhan430010PR China 

出 版 物:《Environmental Science and Ecotechnology》 (环境科学与生态技术(英文))

年 卷 期:2024年第20卷第4期

页      面:198-207页

核心收录:

学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 08[工学] 

基  金:supported by the State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology(No.2022TS13) the National Key Research and Development Program(No.2019YFC0408503) the Key Research Program of Wuhan(No.2022022202015015) 

主  题:Continuous flow systems Microalgal-indigenous bacterial interactions Advanced treatment Self-adaptation mechanisms Nutrient removal mechanisms 

摘      要:Microalgal-indigenous bacterial wastewater treatment(MBWT)emerges as a promising approach for the concurrent removal of nitrogen(N)and phosphorus(P).Despite its potential,the prevalent use of MBWT in batch systems limits its broader ***,the success of MBWT critically depends on the stable self-adaptation and synergistic interactions between microalgae and indigenous bacteria,yet the underlying biological mechanisms are not fully *** we explore the viability and microbial dynamics of a continuous flow microalgae-indigenous bacteria advanced wastewater treatment system(CFMBAWTS)in processing actual secondary effluent,with a focus on varying hydraulic retention times(HRTs).The research highlights a stable,mutually beneficial relationship between indigenous bacteria and *** and indigenous bacteria can create an optimal environment for each other by providing essential cofactors(like iron,vitamins,and indole-3-acetic acid),oxygen,dissolved organic matter,and *** collaboration leads to effective microbial growth,enhanced N and P removal,and energy *** study also uncovers crucial metabolic pathways,functional genes,and patterns of microbial ***,the effluent NH4 t-N and P levels complied with the Chinese national Class-II,Class-V,Class-IA,and Class-IB wastewater discharge standards when the HRT was reduced from 15 to 6 *** results,including the highest rates of CO_(2) fixation(1.23 g L^(-1)),total energy yield(32.35 kJ L^(-1)),and the maximal lipid(33.91%)and carbohydrate(41.91%)content,were observed at an HRT of 15 ***,this study not only confirms the feasibility of CFMBAWTS but also lays a crucial foundation for enhancing our understanding of this technology and propelling its practical application in wastewater treatment plants.

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