摘要
采用改进的聚乙烯醇、海藻酸钠包埋法固定微球菌修复受污染地表水,结果表明:相同时间内固定化细菌对COD的去除率明显高于游离菌, 72h的去除率可达到 64. 7%;固定化颗粒的适宜接种量为 10%;固定化颗粒对环境的耐受能力远远强于游离菌;固定化颗粒再生性能好,可以长期反复使用。扫描电镜分析显示,固定化颗粒微观结构适合微球菌的生长,但也存在一些需改进的结构缺陷。
The modified polyvinyl alcohol-sodium alginate (PVA-Na·Alg) immobilized micrococcus sp. N3-9P was used to bio-rehabilitate the polluted surface water. The result shows that COD removal rate of immobilized particle is significant higher than that of free cell during the same period, with removal rate up to 64.7% at 72 h. The inoculation capacity suitable to the immobilized particle is 10%. The environmental adaptability of the particle is far more than that of free cell. The particle has good regenerative ability and can be repeated use for long time. The SEM analysis shows that the micro-structure of immobilized particle is fit for micrococcus sp. N3-9P growth, but there exists some defects in structure to be improved.
出处
《中国给水排水》
CAS
CSCD
北大核心
2005年第2期6-10,共5页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目2002AA601022)
沈阳环境工程重点实验室基金资助项目(04002)
关键词
生物修复
微生物固定化
受污染地表水
bioremediation
microbe immobilization
polluted surface water
