南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (04): 105-108.doi: 10.3969/j.jssn.1000-2006.2009.04.022

• 研究论文 • 上一篇    下一篇

不同pH条件下铜对固定化小球藻除氮效果的影响

李川,薛建辉,苏莹莹,许鹏成,刘栋,沈家禾   

  1. 南京林业大学,江苏省林业生态工程重点实验室,江苏南京210037
  • 出版日期:2009-08-18 发布日期:2009-08-18
  • 基金资助:
    收稿日期:2008-11-10修回日期:2009-03-31基金项目:国家“十一五”科技支撑计划(2006BAD03A19);江苏省林业生态工程重点实验室开放研究课题资助项目;南京林业大学大学生科技创新基金资助项目作者简介:李川(1972—),讲师,博士生,研究方向为环境生态。Email: lichuan_2001@hotmail.com。引文格式:李川,薛建辉,苏莹莹,等. 不同pH条件下铜对固定化小球藻除氮效果的影响[J]. 南京林业大学学报:自然科学版,2009,33(4):105-108.

Effects of copper at different pH on the nitrogenremoval efficiencies of immobilized Chlorella pyrenoidosa

LI Chuan, XUE Jianhui, SU Yingying, XU Pengcheng, LIU Dong, SHEN Jiahe   

  1. Jiangsu key Laboratory of Forestry and Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Online:2009-08-18 Published:2009-08-18

摘要: 采用海藻酸钙凝胶包埋固定小球藻,对人工污水进行静态模拟净化试验,研究了不同pH条件下铜对固定化小球藻去除污水中氨氮和硝酸氮能力的影响。结果表明:有铜存在时第5天,pH为4、5、6、7、8时固定化小球藻的NH+3N的去除率相对无铜条件分别下降了4.0%、0.6%、5.9%、6.0%和4.4%,悬浮态小球藻的NH+3N的去除率分别下降了10.9%、22.4%、15.5%、14.5%和20.2%;pH为6、7、8时固定化小球藻的NO-3N的去除率相对无铜条件分别下降了4.1%、2.8%和4.2%,但pH为4、5时固定化小球藻的NO-3N的去除率却上升了0.8%和02%,在pH为4、5、6、7、8时悬浮态小球藻的NO-3N的去除率相对无铜条件则分别下降了4.4%、92%、5.3%、10.6%和10.2%。总体而言,铜抑制了小球藻的除氮能力,尤其对悬浮态小球藻的除氮能力产生了较大的抑制性,而固定化处理在一定程度上减弱了铜对小球藻除氮能力的影响。

Abstract: The static simulation test for synthetic wastewater purification was carried out by using Chlorella pyrenoidosa entrapped in calcium alginate, and influence of copper at different pH on the nitrogenremoval efficiencies of immobilized Chlorella pyrenoidosa for ammonia and nitric acidcontaining wastewater were also investigated. Test results showed that comparing without copper in wastewater, when copper was added,the NH+3N removal of immobilized Chlorella pyrenoidosa in 5 days at pH=4, 5, 6, 7, 8 was reduced 4.0%, 0.6%, 5.9%, 6.0% and 4.4% respectively, the NH+3N removal of suspended Chlorella pyrenoidosa was reduced 10.9%, 22.4%, 15.5%, 14.5%, 20.2% respectively; The NO-3N removal of immobilized Chlorella pyrenoidosa at pH=6, 7, 8 was reduced 4.1%, 2.8% and 4.2% respectively, but the NO-3N removal at pH=4, 5 was increased 0.8%, 0.2%, the NO-3N removal of suspended Chlorella pyrenoidosa was reduced 4.4%, 9.2%, 5.3%, 10.6%, 10.2% respectively. So copper has inhibited the nitrite uptake efficiency of Chlorella pyrenoidosa in free cells than the immobilized ones, and the treatment of immobilization to algae smoothed the disruption of copper.

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