生物强化生态床修复景观水过程中氮转化积累研究  

Nitrogen Transition in Landscaping Water Remediation by Micro-ecology Filter of Biology Intensify

作　　者：刘书宇[1] 马放[2] 姜钦鹏[2] 

机构地区：[1]上海大学 环境与化学工程学院,上海201800 [2]哈尔滨工业大学 市政环境工程学院,哈尔滨150090

出　　处：《北京工业大学学报》2008年第6期642-645,651,共5页Journal of Beijing University of Technology

基　　金：国家“九七三”计划资助项目(2004CB418505);上海大学创新基金(A10-0111-07-90);上海市优秀青年教师科研专项(B．37-0111-07-701)

摘　　要：以沸石和煤渣为主要基质构建复合生态床修复景观水体,从土著微生物中筛选驯化优势菌群对修复过程强化,考察生物强化过程对系统氮污染去除的强化及系统内氮的转化途径,并以天然土著微生物群强化和无生物强化为对比.结果表明,无生物强化的自然基质生态床可在短时间内通过离子交换吸附作用将ρ(NH_4^+-N)降低,系统内存在硝化作用,且NO_3^--N发生积累;而优势菌群强化系统对ρ(NH_4^+-N)的降低较快,且最后ρ<0.5 mg/L,NO_3^--N积累量较小;优势菌群使系统很好完成对氮的循环去除.且优势菌群强化系统离子交换去除率及硝化去除率延程均显著提高,即从原污染水中驯化的氮转化功能菌群能强化系统的氮转化,菌群功能与活性在延程中受到影响较小.Took zeolite and coal cinder as main substrates to construct micro-ecology filter to remedy landscaping water body. Screening and domesticating dominant colony to intensify remedying process, took aboriginal colony and naked substrate as contrast. Results showed that, naked substrate filter could reduce NH4^＋ -N concentration in short period through ion exchange and adsorption, nitrification exist in system and there was accumulation of NO3^--N; dominant colony intensified system decreased NH4^＋-N more quickly and last concentration of NH4^＋-N was lower than 0.5 mg/L, accumulation of NO3^--N was little, removal and circle of nitrogen was carried well in dominant colony system. Ion exchange rates and nitrification rate in dominant colony system increased evidently along hydraulic distance. Nitrogen transition colony could intensify nitrogen circle in the system, the function and activity of nitrous colony was affected little.

关 键 词：优势菌群 生态床 景观水体 生物强化 氮转化 

分 类 号：X17[环境科学与工程—环境科学]