title: Effects of carbon-to-sulfur (C/S) ratio and nitrate (N) dosage on Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorus Removal (DS-EBPR).
abstract: In this study, the Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorous Removal (DS-EBPR) with 20 mg P/L/d of the volumetric P removal rate was successfully achieved in a Sequencing Batch Reactor (SBR). The effects of carbon-to-sulfur (C/S) mass ratio and nitrate (N) dosage were investigated through two batch tests to reveal the role of wastewater compositions in DS-EBPR performance. The optimal specific P release and uptake rates (0.4 and 2.4 mg P/g VSS/h, respectively) were achieved at C/S/P/N mass ratio of 150/200/20/20, and poly-S is supplied as a potential electron and energy storage. The nitrate dosage in a range of 10-50 mg N/L had no significant influence on P uptake rates (2.1 ~ 2.4 mg P/g VSS/h), but significantly affected the storage of inclusion poly-S, the poly-S oxidation rate was increased about 16% while dosing nitrate from 20 to 30 mg N/L. It implies that nitrate is denitrified in the P uptake phase, and excess nitrate is further consumed by poly-S. Moreover, the microbial analysis showed that the functional bacteria should mostly belong to denitrifying bacteria or Unclassified genera.
authors.affiliation: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.|Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, 510275, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Yu
authors.affiliation: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.|Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, 510275, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Lu
authors.affiliation: Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
authors.forename: Di
authors.initials: D
authors.lastname: Wu
authors.affiliation: School of Civil Engineering, Guangzhou University, Guangzhou, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.|Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, 510275, China.
authors.forename: Fangang
authors.initials: F
authors.lastname: Meng
authors.affiliation: Shenzhen Fengrun Environmental Technology Co., Ltd, Shenzhen, China.
authors.forename: Yudan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Urban Stormwater System and Water Environment -MoU/R and D Centre for Sustainable Wastewater Treatment, Beijing University of Civil Engineering and Architecture, Beijing 100044, P. R. of China.
authors.forename: Xiaodi
authors.initials: X
authors.lastname: Hao
authors.affiliation: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.|Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.|Key Laboratory of Urban Stormwater System and Water Environment -MoU/R and D Centre for Sustainable Wastewater Treatment, Beijing University of Civil Engineering and Architecture, Beijing 100044, P. R. of China.
authors.forename: Guang-Hao
authors.initials: GH
authors.lastname: Chen
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D018533:Biomass; D002244:Carbon / Q000378:metabolism*; D004269:DNA, Bacterial / Q000235:genetics / Q000378:metabolism; D058440:Denitrification; D017404:In Situ Hybridization, Fluorescence; D009573:Nitrites / Q000378:metabolism*; D010084:Oxidation-Reduction; D010758:Phosphorus / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D012722:Sewage / Q000382:microbiology; D013455:Sulfur / Q000378:metabolism*; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000032:analysis
chemical_list: D002244:Carbon; D004269:DNA, Bacterial; D009573:Nitrites; D010758:Phosphorus; D012722:Sewage; D013455:Sulfur; D062065:Wastewater