不同环境因子作用下仿生植物附着微生物膜对氮素降解效能  

EFFECT OF BIONIC PLANTS ATTACHED BIOFILM ON NITROGEN DEGRADATION EFFICIENCY UNDER DIFFERENT ENVIRONMENTAL FACTORS

作　　者：储金宇[1] 王晓娟[1] 周晓红[1] 刘彪[1] 周艺[1] 

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013

出　　处：《水处理技术》2014年第6期45-49,共5页Technology of Water Treatment

基　　金：国家自然科学基金(51109097);江苏省基础研究计划(自然科学基金)面上研究项目(BK2011520);中国博士后科学基金第五批特别资助项目(2012T50464);江苏省高等学校大学生实践创新训练计划项目(2012JSSPITP1264)

摘　　要：通过野外挂膜和室内控制实验,研究pH（4-5、7-8、10-11）、DO（曝气、非曝气）、初始氨氮质量浓度（20、200、400 mg/L）等3种环境因素作用下仿生植物附着微生物膜对氮的降解效能。结果表明,实验系统中氨氮及NO3--N的含量变化受环境因素影响显著,DO含量的增加显著提高仿生植物附着微生物膜对氮素的去除效果,曝气组氨氮含量显著下降,去除率介于21.37%-55.86%,而非曝气组的氨氮最高去除率仅为5.4%;水体pH介于7-8时,水体初始氨氮的质量浓度为20mg/L左右时,仿生植物处理系统具有较高的氨氮去除效能。因此不同水体理化因子作用下仿生植物附着微生物膜对氮素降解效能有显著差异,因此,在运用该项技术实现重污染水体的原位修复时,亦要同时考虑水质理化指标的适宜范围。The effect ofpH （4-5, 7-8, 10-11）, DO （aeration, non-aeration）, the initial ammonia concentration （20 rag/L, 200 mg/L, 400 mg/L） on nitrogen degradation efficiency of bionic plants attached biofilm were investigted via the wild plug-film and indoor controlled experiments. The results indicated that the concentration of ammonia and nitrate nitrogen were affected significantly by environmantal factors in the test system, the increasing of dissolved oxygen content can improve nitrogen removal efficiency of bionic plants attached biofilm significantly, aeration group ammonia concentration decreased significantly, the removal rate between 21.37%-55.86%. However, the non-aeration group just had 5.4% in highest; It showed that pH 7-8, and when the mass concentration of initial ammonia was 20 mg/L, the treatment system had a high nitrogen removal efficiency on the range of three concentrations which were set. These results indicated that bionic plants attached biofilm has different nitrogen degradation efficiency under the different action of physical and chemical factors. Therefore, we should also consider physical and chemical indicators of water quality suitable range when we use the technology in the heavily polluted water bodies to achieve situ repair.

关 键 词：仿生植物 微生物膜 环境因子 氨氮去除 硝化强度 

分 类 号：X703.1[环境科学与工程—环境工程]