投加介体强化低温污水生物反硝化脱氮的研究  

Enhanced Biological Denitrification of Low-temperature Sewage by Adding Redox Mediator

作　　者：苑宏英 李原玲[1,2] 李华 孙锦绣 王小佩 何旭东[1,2] 蔺能 YUAN Hong-ying;LI Yuan-ling;LI Hua;SUN Jin-xiu;WANG Xiao-pei;HE Xu-dong;LIN Neng(School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China;Nanshan Wastewater Treatment Plant, Shenzhen Water 〈 Group 〉 Co. Ltd., Shenzhen 518067, China)

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]深圳市水务<集团>有限公司南山水质净化厂,广东深圳518067

出　　处：《中国给水排水》2018年第13期110-114,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51308374);天津市水质科学与技术重点实验室开放研究基金资助项目(TJKLAST-2011-11);天津城建大学2017年大学生创新创业项目(201810792085);天津城建大学2016年大学生创新创业项目(201710792125)

摘　　要：污水的生物脱氮效果易受低温条件抑制,通过投加介体可以提高脱氮效果。在(10±1)℃的低温条件下,研究了投加不同浓度的介体1,2-萘醌-4-磺酸(NQS)对生物反硝化脱氮的影响。结果表明,随着介体投加浓度的增加,介体对脱氮效果的强化作用先升高后下降,当介体投加浓度为200μmol/L时对生物脱氮的强化效果最佳,脱氮效率与速率均达到最大,分别为96.7%和31.9 mg NO_x^--N/(g VSS·h),相比空白试验[56.5%和12 mg NO_x^--N/(g VSS·h)]分别提高了1.7和2.7倍。Nitrogen removal from sewage is inhibited by low temperature, but it can be improved by adding redox mediators. At low temperature of （ 10 ± 1 ） ℃,the effects of adding different concentra- tions of redox mediator 1,2-naphthoquinone-4-sulfonic acid （NQS） on biological denitrification were studied. The results showed that the enhancement of denitrification by adding redox mediator increased first and then decreased with the increasing of redox mediator concentration. When the redox mediator concentration was 200 μ mol/L, optimal denitrification was achieved, and the highest denitrification effi- ciency and denitrification rate reached 96.7% and 31.9 mgNOx- -N/（ gVSS·h） respectively, which increased by 1.7 times and 2.7 times compared with the blank test results [56.5% and 12 mgNOx- - N/ （gVSS· h） 3.

关 键 词：生物反硝化脱氮 低温 介体浓度 脱氮效率 脱氮速率 

分 类 号：TU992.3[建筑科学—市政工程]