内聚营养源固定化SRB去除硫酸盐和铬的研究  

Effect of Internal Nutrient Sources and Mechanism of Chromium and Sulfate Removal by Immobilized SRB

作　　者：张鸿郭[1] 钟铿锵 林洁松 吴梦杰[1] 温项斯 陈光仕 邓康蓝 陈梓莹 宫昌辰 孙健 罗定贵[1] 陈永亨[1] ZHANG Hong-guo;WEN Xiang-si;ZHONG Keng-qiang;LIN Jie-song;CHEN Guang-shi;DENG Kang-lan;WU Meng-jie;CHEN Zi-ying;GONG Chang-chen;SUN Jian;LUO Ding-gui;CHEN Yong-hengl(Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources,Key Laboratory for Water Quality Security and Protection in Pearl River Delta 〈 Ministry of Education 〉,School of Environmental Science and Engineering,Guangzhou University,Guangzhou 510006,China;Institute of Environmental Health and Pollution Control,School of Environmental Science and Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广州大学环境科学与工程学院珠江三角洲水质安全与保护教育部重点实验室广东省放射性核素污染控制与资源化重点实验室,广东广州510006 [2]广东工业大学环境科学与工程学院环境健康与污染控制研究院,广东广州510006

出　　处：《中国给水排水》2018年第21期42-46,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51208022;51778156;41372248);广东省科技计划项目(2014A020216042);广州市科技计划项目(201607010318;201707010256);广州市珠江科技新星项目(2011061);广州大学2017年度大学生创新训练项目;广州市教育局重大创新项目(13XT02)

摘　　要：内聚营养源生物固定化技术对于缺乏营养源、存在重金属污染风险的水源地水质安全保障具有独特的意义。以聚乙烯醇和海藻酸钠为交联剂,制备内聚蔗糖、葡萄糖、正丙醇、乙酸钠为营养源的固定化硫酸盐还原菌(SRB)小球。在Cr^(6+)初始浓度为100 mg/L、SO_4^(2-)初始浓度为200mg/L的条件下,探讨不同内聚营养源对固定化SRB小球去除Cr^(6+)和SO_4^(2-)效果的影响。结果表明:内聚蔗糖、葡萄糖、正丙醇、乙酸钠的固定化硫酸盐还原菌能得到较好的Cr^(6+)和SO_4^(2-)去除效果,对Cr^(6+)的最大去除量分别达到333.74、297.14、289和260.54μg/g,对SO_4^(2-)的最大去除量分别达到1 553.60、1 375.64、1 374.46和1 267μg/g。固定化小球去除Cr^(6+)和SO_4^(2-)的最适营养源为蔗糖,其对Cr^(6+)和SO_4^(2-)的最高去除率分别达到99.89%和98.65%。小球内羟基化合物、碳酸氢根离子和硫酸盐成分及其反应效果影响了内聚营养源包埋小球对Cr^(6+)和SO_4^(2-)的去除。Microbial immobilization technology has a unique significance to the security of water sources which are encountering challenges such as heavy metal contamination and lack of nutrition sources. Several kinds of immobilized beads of sulfate reducing bacteria （SRB） were prepared, which embedded several types of internal carbon sources including sucrose, glucose, n-propanol, and sodium acetate. The polyvinyl alcohol and the sodium alginate were used as crosslinking agents. With initial concentrations of 100 mg/L Cr6^＋ and 200 mg/L SO4^2-, the removal efficiency of Cr6^＋ and SO4^2- was dis- cussed. It was demonstrated that great removal effect of Cr6^＋ and SO4z- was achieved when using internal carbon sources of sucrose, glucose, n-propanol, and sodium acetate. The maximum Cr6^＋ removal a mounts were up to 333.74, 297.14, 289 and 260.54 trg/g, and the maximum SO4^2- removal amounts reached 1 553.60, 1 375.64, 1 374.46 and 1 267 μg/g, corresponding to the carbon sources. The most suitable carbon source was sucrose, and the maximum removal rates of Cr6^＋ and SO4^2- were 99.89% and 98.65%, respectively. The components of hydroxyl compound, bicarbonate ion, sulfate, and their effects on the beads affected the removal efficiency of Cr6^＋ and SO4^2- by immobilized SRB.

关 键 词：硫酸盐还原菌 固定化 营养源 铬 硫酸盐 

分 类 号：TU991[建筑科学—市政工程]