title: [Feasibility of 3BER-S Process for the Deep Denitrification in Synch with the Removal of PAEs from Reclaimed Water].
abstract: In order to investigate the feasibility of deep denitrification and simultaneous removing phthalate esters (PAEs) in the process of reclaimed water treatment uses three-dimensional biofilm-electrode reactor coupled with sulfur autotrophic deep denitrification technology (3BER-S), the technological characteristics and mechanisms were analyzed based on determining the static adsorption capacity of biofilm cultured active carbon fillers in 3BER-S reactor together with the operation results of dynamic denitrification and simultaneous PAEs removing. The results showed that the average adsorption rates of DBP, DEHP were 85.84% and 97.12% in the biofilm cultured active carbon fillers, the equilibrium adsorption capacities were 0.1426 mg x g(-1) and 0.162 mg(-1) and the time spans of reaching adsorption saturation were 120 min and 60 min, respectively; The existence of PAEs had no obvious effect on denitrification, the reactor effluent concentration of TN was in range of 1-2 mg x L(-1) before and after the addition of PAEs, and the average removal rate of TN reached above 94%; 3BER-S denitrification system showed significant ability in removing PAEs, leading to effluent concentrations of DBP and DEHP of no more than 6 microg x L(-1) with removal rates of above 96%; this was due to the synergistic effect of absorption, biodegradation and electrochemistry. After treatment with 3BER-S technology, DBP and DEHP in simulative municipal secondary effluent met the regulated limitation of The Reuse of Urban Recycling Water Quality Standard for Groundwater Recharge (GB/T 19772-2005).
authors.forename: Peng-cheng
authors.initials: PC
authors.lastname: Xu
authors.forename: Rui-xia
authors.initials: RX
authors.lastname: Hao
authors.forename: Ya
authors.initials: Y
authors.lastname: Zhang
authors.forename: Dong-yue
authors.initials: DY
authors.lastname: Wang
authors.forename: Li-yan
authors.initials: LY
authors.lastname: Zhong
authors.forename: Hao-dan
authors.initials: HD
authors.lastname: Xu
mesh_terms: D000327:Adsorption; D052818:Autotrophic Processes; D001673:Biodegradation, Environmental; D018441:Biofilms; D058440:Denitrification; D004952:Esters / Q000737:chemistry*; D010795:Phthalic Acids / Q000737:chemistry*; D016999:Sulfur-Reducing Bacteria; D014867:Water; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification
chemical_list: D004952:Esters; D010795:Phthalic Acids; D014874:Water Pollutants, Chemical; D014867:Water; C032279:phthalic acid