钝顶螺旋藻脱氮除磷效果及条件优化  

Optimizing the Conditions in Removal of Nitrogen and Phosphorus by Spirulinap latensis

作　　者：彭方[1] 唐斐[1] 梁志杰[1] 苏肖铃[1] 葛飞[1] 

机构地区：[1]湘潭大学环境科学与工程系,湖南湘潭411105

出　　处：《农业环境科学学报》2013年第9期1870-1875,共6页Journal of Agro-Environment Science

基　　金：湖南省教育厅重点项目(11A119);国家自然科学基金项目(21277114);教育部新世纪优秀人才支持计划(NCET-10-0148)

摘　　要：以丝状蓝藻钝顶螺旋藻(Spirulinap latensis)为受试生物,采用批量培养方法研究其对污水中氮磷的去除效果,并对初始藻密度、初始氮磷浓度、氮磷比、饥饿处理及无机碳源等条件进行了优化。结果表明,在实验条件下钝顶螺旋藻对氮磷的去除能力随着初始藻密度的增加而增强。当NH+4-N和TP的初始浓度分别低于25 mg·L-1和2.5 mg·L-1时,钝顶螺旋藻对氮磷的去除率均可达90%以上;在氮磷比为5∶1和10∶1时,钝顶螺旋藻对NH+4-N去除效率相对较高,TP去除率受氮磷比影响较小。钝顶螺旋藻经饥饿处理2~3 d后,比未饥饿处理组对NH+4-N和TP的去除率分别提高了20%和10%;含有无机碳源的钝顶螺旋藻,对NH+4-N和TP的去除率比无碳组分别提高80%和30%。This paper investigated the optimization of conditions in removal of nitrogen and phosphorus by a filamentous blue alga Spirulinap late nsis, which included algae density, initial concentrations of NH^-N and total phosphorus （TP）, ratio of nitrogen to phosphorus （N/P ra- tio）, starvation treatment and inorganic carbon. The results showed that under experimental conditions, the removal efficiency of NH^-N and TP increased with the enhancement of initial algae density. 90% NH^-N and TP could been removed as initial concentrations of NHJ-N and TP not more than 25 mg＂ L-1 and 2.5 rag＂ L-1, respectively.The removal efficiencies of NH^-N was higher under N/P ratios of 5：1 and 10：1 than those under other N/P ratios, while TP removal was little affected. Futher more, the removal efficiencies of NH^-N and TP exhibited 20% and 10% higher with starvation treatment of 2 days to 3 days than that without-starvation treatment, and increased about 80% and 30% for the treatments with inorganic carbon source compared to that without inorganic carbon source, respectively.

关 键 词：钝顶螺旋藻 脱氮除磷 污水处理 

分 类 号：X703.1[环境科学与工程—环境工程]