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3DBER-S-Fe同步脱氮除磷及去除邻苯二甲酸酯的工艺特性
引用本文:张娅,郝瑞霞,徐鹏程,徐忠强.3DBER-S-Fe同步脱氮除磷及去除邻苯二甲酸酯的工艺特性[J].环境科学,2016,37(11):4268-4274.
作者姓名:张娅  郝瑞霞  徐鹏程  徐忠强
作者单位:北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100124,北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100124,北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100124,北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100124
基金项目:国家自然科学基金项目(51378028)
摘    要:为探究三维电极生物膜耦合硫铁新工艺(3DBER-S-Fe)脱氮除磷并同步去除邻苯二甲酸酯(PAEs)的工艺特性,在水力停留时间(HRT)分别为8、6、4 h条件下,研究分析了系统内总氮(TN)、总磷(TP)、邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二(2-乙基)己酯(DEHP)、NO-3-N、SO2-4及pH的变化情况.结果表明,3DBER-S-Fe系统具有较好的脱氮除磷及PAEs去除效果.当水力停留时间为8、6、4 h时,TN去除率分别为80.99%、78.85%、64.76%;TP去除率分别为65.18%、67.17%、43.44%;DBP去除率分别为96.72%、97.32%、96.53%;DEHP去除率分别为91.89%、81.57%、74.30%.在3DBER-S-Fe系统内,存在异养、氢自养、硫自养反硝化脱氮过程,当HRT由8h缩短到4h时,单质硫可以弥补进水NO-3-N负荷增加所导致的反硝化电子供体相对不足问题,维持系统高效的脱氮效率;系统中海绵铁填料腐蚀产生的铁离子能够高效持续沉淀除磷;3DBER-S-Fe工艺结合了物理吸附、生物降解及电化学作用,使其在不同HRT条件下具有较高的DBP与DEHP去除率.

关 键 词:再生水  三维电极生物膜  水力停留时间  邻苯二甲酸酯  脱氮除磷
收稿时间:4/9/2016 12:00:00 AM
修稿时间:2016/5/28 0:00:00

Operational Characteristics of the Simultaneous Nitrogen and Phosphorus Removal and Removal of Phthalate Esters by Three-dimensional Biofilm-electrode Coupled with Iron/Sulfur Reactor
ZHANG Y,HAO Rui-xi,XU Peng-cheng and XU Zhong-qiang.Operational Characteristics of the Simultaneous Nitrogen and Phosphorus Removal and Removal of Phthalate Esters by Three-dimensional Biofilm-electrode Coupled with Iron/Sulfur Reactor[J].Chinese Journal of Environmental Science,2016,37(11):4268-4274.
Authors:ZHANG Y  HAO Rui-xi  XU Peng-cheng and XU Zhong-qiang
Institution:Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China,Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China,Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China and Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
Abstract:In order to explore the technological characteristics of the simultaneous removal of phthalate esters (PAEs) as well as nitrogen and phosphorus by the novel technology of three-dimensional biofilm-electrode coupled with iron/sulfur reactor (3DBER-S-Fe), the changes of the total nitrogen (TN),total phosphorus (TP),DBP,DEHP,NO3--N, SO42- and pH value were analyzed under the hydraulic retention time (HRT) of 8 h, 6 h and 4 h respectively. The results showed that 3DBER-S-Fe could remove nitrogen, phosphorus and PAEs effectively. Under the HRT of 8 h, 6 h and 4 h, the removal rates of TN were 80.99%, 78.85% and 64.76%; TP were 65.18%, 67.17% and 43.44%; DBP were 96.72%, 97.32% and 96.53%; DEHP were 91.89%, 81.57% and 74.30%, respectively. There were heterotrophic denitrification, hydrogen autotrophic denitrification and sulfur autotrophic denitrification processes in the 3DBER-S-Fe, the elemental sulfur could compensate for the relative shortage of denitrification electron donor caused by the increase of NO3--N load in the influent as a result of maintaining a high efficiency of the denitrification system when the HRT was shortened from 8h to 4h; the iron ions produced by the corrosion of the sponge iron filler in the system had a sustainable and efficient function of removing phosphorus by precipitation; the 3DBER-S-Fe process combined the interactions of physical adsorption, biological degradation and electrochemical processes which supported its high removal rates of DBP and DEHP under the different HRT conditions.
Keywords:reclaimed water  three-dimensional biofilm-electrode  hydraulic retention time  phthalate esters (PAEs)  nitrogen and phosphorus removal
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