摘要
通过模拟实验探讨了污水处理中底栖藻类的群落结构、生长状况及其对氮(N)、磷(P)的去除能力。实验期间,被试藻类(丝状绿藻占优势)在污水中生长良好,培养5 d后收获的藻类生物量可达14.36±0.72 g;污水总氮(TN)、总磷(TP)含量分别由36.97±0.26 m g.L-1、2.88±0.02 m g.L-1降至1.44±0.09 m g.L-1、0.07±0.01 m g.L-1,对氨氮(NH4-N)和硝氮(NO3-N)的去除率亦达95%以上;藻体总凯氏氮(TKN)和TP含量分别为5.75±0.20%和1.5±0.22%。实验证明,底栖藻类对污水中的N、P营养有明显的去除效果,在污水的三级处理以及水体富营养化的防治方面具有较大的应用潜力。
This paper is aimed to discuss the removal ability on nitrogen and phosphorus from synthetic wastewater by freshwater benthic algae. A simulated test was conducted using the tested benthic algae collected from a discharge way of a paper mill wastewater in Wuhan. The results showed that the community structure of the benthic algae was mainly composed of filamentous green algal species with the most abundant alga of Stigeoclonium sp., which could grow well and showed a relatively high ability to removal nitrogen （N） and phosphorus （P） from synthetic wastewater. During a 5-days treatment, the concentrations of total nitrogen （TN） and total phosphorus （TP） in synthetic wastewater were changed from 36. 97±0. 26 mg·L^-1 and 2.88± 0.02 mg·L^-1 to 1.44±0. 09 mg·L^-1 and 0. 07±0. 01 mg·L^-1, respectively. The removal rates on TP, TN, ammonia-nitrogen （NH4-N） and nitric-nitrogen （NO4-N） were up to 96%, 98%, 98% and 97%, respectively. Simultaneity, algal biomass could be harvested to 14.36±0.72 g. The contents of total Kelvin-nitrogen （TKN） and TP of harvested algal biomass were 5.75± 0. 20% and 1.56±0.22%. It is implicated that freshwater benthic algal treatment system may have potential use in controlling lake eutrophication and be served as a means to restore lake ecosystem.
出处
《武汉植物学研究》
CSCD
北大核心
2005年第5期465-469,共5页
Journal of Wuhan Botanical Research
基金
国家863计划项目(2002AA601021)
中国科学院知识创新工程重要项目(KSCX2-1-10)
关键词
底栖藻类
污水处理
富营养化
N、P去除
Benthic algae
Wastewater treatment
Eutrophication
Nitrogen and phosphorus removal
