基于固态碳源的同步硝化反硝化反应器对海水养殖废水中氮的去除性能  

Performance of simultaneous nitrification and denitrification reactor based on solid-phase carbon source on nitrogen removal from mariculture wastewater

作　　者：汪鲁 刘军 李永富 刘质浩 崔鸿武 WANG Lu;LIU Jun;LI Yongfu;LIU Zhihao;CUI Hongwu(Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,China;First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266000,China;College of Oceanography,Hohai University,Nanjing 210098,China)

机构地区：[1]青岛海洋科学与技术试点国家实验室,青岛266237 [2]中国水产科学研究院黄海水产研究所,青岛266071 [3]自然资源部第一海洋研究所,青岛266000 [4]河海大学海洋学院,南京210098

出　　处：《环境工程学报》2022年第6期2001-2009,共9页Chinese Journal of Environmental Engineering

基　　金：山东省自然科学基金博士基金(ZR2019BC026);国家自然科学基金青年基金(32102854);青岛海洋科学与技术试点国家实验室科研启动项目(JCZX202029)。

摘　　要：通过批次实验考察了非生物作用下3-羟基丁酸/戊酸酯共聚物(PHBV)的有机碳释放规律;以PHBV颗粒和陶粒作为填料建立了填充柱生物膜反应器,并通过长期(90 d)运行考察了其对海水养殖废水中氮的去除性能。结果表明,非生物作用下PHBV难以向水体中释放有机碳;以PHBV作为固态碳源的生物膜反应器可以实现同步硝化反硝化。反应器运行状态(HRT为2 h)稳定后,氨氮和总氮的去除率分别为(91.8±1.3)%和(87.5±2.2)%,硝化速率和反硝化速率分别为0.11 g·(L·d)^(-1)和0.20 g·(L·d)^(-1)。填充柱沿水流方向可以分为2个区段,0~20 cm柱体内主要进行同步硝化反硝化过程,20~100 cm柱体内主要进行反硝化过程;反应器中微弱的亚硝酸盐积累可以归因于短程反硝化。以上研究成果可以为海水养殖业绿色发展提供参考。Batch experiments were conducted to investigate the organic carbon release of poly-3-hydroxybutyrate-co-hyroxyvelate(PHBV) under abiotic condition.A biofilm reactor packed with PHBV granules and ceramsite was established and operated for 90 d to determine its performance on nitrogen removal from mariculture wastewater.Batch experiment results indicate that the negligible release of organic carbon from PHBV to water occurred under abiotic condition.Simultaneous nitrification and denitrification could be achieved in the biofilm reactor utilizing PHBV as solid-phase carbon source.When the biofilm reactor reached steady-state operation status(HRT = 2 h),the removal efficiencies of ammonia and total nitrogen were(91.8±1.3)% and(87.5±2.2)%,respectively,together with the nitrification rate of 0.11 g·(L·d)^(-1) and the denitrification rate of 0.20 g·(L·d)^(-1).The packed-bed reactor could be divided into two distinct sections,namely,the section of 0~20 cm for simultaneous nitrification and denitrification and the section of 20~100 cm for denitrification.Slight nitrite accumulation in the packed-bed reactor could be attributed to the short-cut denitrification.Therefore,the achievements of this study could provide a technical support for the green development of mariculture.

关 键 词：固态碳源 3-羟基丁酸/戊酸酯共聚物(PHBV) 同步硝化反硝化 生物膜反应器 海水养殖废水 

分 类 号：X703.1[环境科学与工程—环境工程]