Abstract: The influences of bicarbonate alkalinity on the growth of Cladophora and the removing capability of N and P have been investigated. The results show that Cladophora has tolerance to bicarbonate alkalinity with a certain concentration. The suitable condition for the growth of Cladophora is when the initial alkalinity is 11.7 mmol/L. In addition,on the 7th day since the experiments got started,the highest removing rates of TP,TN and NH₄⁺ are 35%,81% and 55%,respectively. Cladophora has a certain ability to utilize CO₃^2-. Cladophora may have higher competitive superiority in an environment with high bicarbonate alkalinity,compared with bloom-forming cyanobacteria.

Key words: Cladophora, alkalinity, denitrification, phosphorus removal

摘要： 研究了碳酸氢盐碱度对刚毛藻生长和脱氮除磷能力的影响。结果表明，刚毛藻对一定浓度的碳酸氢盐碱度有耐受性。初始碱度为11.7 mmol/L有利于刚毛藻生长，实验开始后的第7天，TP、TN、NH₄⁺最高去除率分别为35%、81%、55%。刚毛藻对CO₃^2-有一定利用能力。在高碳酸氢盐碱度环境中，刚毛藻相对于水华蓝藻更具竞争优势。

关键词: 刚毛藻, 碱度, 脱氮, 除磷

CLC Number: 

• X703