菱形藻在污水中的生长及其净化能力  

Growth and purification ability of Nitzschia sp. in wastewater

作　　者：邢荣莲[1,2] 苏群[2] 王长海[2] 孙利芹[2] 

机构地区：[1]山东省黄河三角洲生态环境重点实验室,滨州学院,山东滨州256600 [2]烟台大学海洋学院,山东烟台264005

出　　处：《海洋环境科学》2011年第1期72-75,共4页Marine Environmental Science

基　　金：山东省黄河三角洲生态环境重点实验室开放基金资助项目(2009KFJJ02);国家自然科学基金(31001113,31070368);山东省优秀中青年科学家科研奖励基金(2008BS06012);南京农业大学江苏省海洋生物学重点实验室研究基金资助课题(JSMK2008-004)

摘　　要：研究了菱形藻(Nitzschia sp.)在不同浓度污水中的生长及其对不同形态氮磷的去除情况。结果表明:(1)菱形藻在不同浓度污水中均可以生长,但比生长速率存在显著差异,其中在50%、80%污水环境与基础培养(f/2)环境中生长较快,比生长速率为5.9～8.5,不存在差异;(2)不同浓度污水培养菱形藻后N、P养分均有一定的去除,总磷(TP)和NO3-N利用率均在60%以上,NO2-N、总氮(TN)、NH4-N的利用率分别在40%、70%、90%以上,表明菱形藻有较强的净化水源的能力;(3)污水培养后菱形藻的营养成分含量均高于纯海水培养的,其中80%污水环境下藻细胞叶绿素、胞外多糖(EPS)、胞内多糖(IPS)、蛋白质和总脂肪含量最高,分别占干重的3.5%、2%、4%、1.5%和14.5%。The effects of wastewater on growth and purification ability of Nitzschia sp.were studied.（1） It could grow in all wastewater and showed the remarkable differences in the growth rate.It grew better in environment of 50% sewage,80% sewage and f/2,and the growth rate was 5.9～8.5.（2）After cultivation,ammonia-N、nitrite-N、nitrate-N and phosphate-P were much reduced.The uptake ratio of nitrate-N and total phosphorus exceeded 60%,nitrite-N、total nitrogen,ammonia-N exceeded 40%,70%,90%,respectively.It showed that Nitzschia sp.had the strong defecated ability.（3） The nutrient content was higher in wastewater than that in seawater.chlorophyll,extra-cellular polymeric substance,intracellular polymeric substance,protein and lipid were high in environment of 80% sewage,and the proportions in the dry weight of Nitzschia sp.were 3.5%,2%,4%,1.5%,14.5%,respectively.

关 键 词：菱形藻 生活污水 生长 净化 

分 类 号：Q178.53[生物学—水生生物学]