title: Effects of iron and calcium carbonate on the variation and cycling of carbon source in integrated wastewater treatments.
abstract: Iron and calcium carbonate were added in wastewater treatments as the adjusting agents to improve the contaminant removal performance and regulate the variation of carbon source in integrated treatments. At different temperatures, the addition of the adjusting agents obviously improved the nitrogen and phosphorous removals. TN and TP removals were respectively increased by 29.41% and 23.83% in AC-100 treatment under 1-day HRT. Carbon source from dead algae was supplied as green microbial carbon source and Fe2+was supplied as carbon source surrogate. COD concentration was increased to 30mg/L and above, so the problem of the shortage of carbon source was solved. Dead algae and Fe2+as carbon source supplement or surrogate played significant role, which was proved by microbial community analysis. According to the denitrification performance in the treatments, dead algae as green microbial carbon source combined with iron and calcium carbonate was the optimal supplement carbon source in wastewater treatment.
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Zhimiao
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China. Electronic address: newmountain@dhu.edu.cn.
authors.forename: Song
authors.initials: S
authors.lastname: Xinshan
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Yufeng
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Yanping
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Yuhui
authors.affiliation: College of Environmental Science and Engineering, Donghua University, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Junfeng
authors.affiliation: China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Denghua
mesh_terms: D019149:Bioreactors; D002119:Calcium Carbonate / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry* / Q000378:metabolism; D058440:Denitrification; D007501:Iron / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry / Q000302:isolation & purification; D010758:Phosphorus / Q000737:chemistry / Q000302:isolation & purification; D013696:Temperature; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D002119:Calcium Carbonate; D002244:Carbon; D007501:Iron; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater
keywords: Algal pond; Constructed wetland; Microbial carbon source; Variation and cycling