摘要
以人工模拟氨氮废水为研究对象，采用序批式活性污泥法，研究了实时控制条件下短程生物脱氮的实现及稳定性。结果表明：控制硝化过程中pH在7．7～8．6、D0在0．35～0．80mg／L，经过24d的运行，曝气结束时出水主要以亚硝酸盐为主。在此基础之上，逐渐提高曝气量、降低进水pH，短程硝化并没有被破坏，亚硝化率依然维持在70％以上。过度曝气6d之后，硝化类型由亚硝化率为90．7％的短程硝化转变为亚硝化率为40．7％的全程硝化。
Taking artificially prepared high ammonia nitrogen wastewater as the research object,the sequencing batch reactor （SBR） has been used for investigating the achievements and stability of shortcut biological nitrogen removal under real-time control conditions. The experimental results indicate that the pH in nitrification process should be controlled at 7.7-8.6, and DO 0.35-0.80 mg/L. Nitrite is the main element in the effluent when aeration has ended after running for twenty-four days. Based on this,gradually increasing aeration rate, and lowing influent pH, the short-cut nitrification is not destroyed and the rate of nitrosation remains over 70%. After over aeration for 6 d, as to the nitrification type, the shortcut nitrification whose rate of nitrosation is 90.7% changes into full nitrifi- cation whose rate of nitrosation is 40.7%.
出处
《工业水处理》
CAS
CSCD
北大核心
2011年第11期53-56,共4页
Industrial Water Treatment
关键词
序批式间歇反应器
短程硝化
氨氮废水
sequencing batch reactor
shortcut nitrification
ammonia nitrogen wastewater
