摘要
利用连续流双污泥生物澄清反应器(BCR)反硝化除磷系统,以模拟城市生活污水为处理对象,研究双污泥系统对COD、NH4+-N、TN的去除效果及不同NO3--N浓度对反硝化除磷的影响。试验结果表明:双污泥BCR反硝化除磷系统对COD、NH4+-N和TN具有良好的去除效果,平均去除率分别为83.22%、97.2%、75.47%。控制生物膜好氧硝化反应池中DO浓度为3、4、5 mg/L,池内NO3--N浓度分别达到22、30、38 mg/L,TP的平均出水浓度分别为2.11、0.96、2.69 mg/L。当硝化池中NO3--N浓度为30 mg/L时,系统的运行情况较好,出水TP的浓度相对较理想。
The removal efficiency for COD, NH4^＋-N, TN and the effect about different concentrations of NO3^--N on denitri-fying dephosphatation was investigated by using a laboratory scale continuous flow two-sludge biological clarifying reactor （BCR） denitrifying phosphorus removal system. Results showed that the two-sludge BCR denitrifying phosphorus removal system has good removal effect on COD, NH4^＋-N and TN, with average removal rate of 83.22%, 97.2%, 75.47% respectively. When the DO of biofilm aerobic nitrification reactor was controlled as 3, 4, 5 mg/L, NO3^--N concentration reached up to 22, 30, 38 mg/L respectively, average effluent concentration of TP as 2.11, 0.96, 2.69 mg/L respectively. The system of operation is favorable with relatively ideal effluent concentration of TP when the concentration of NO3^--N in nitration pool is 30 mg/L.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第3期74-77,88,共5页
Environmental Science & Technology
基金
国家自然科学基金(51178125
51278133)
广东省科技计划项目(2012B030800005)
广东省教育厅科技创新项目(2012KJCX0085)
关键词
双污泥BCR
反硝化脱氮除磷
生物膜
硝酸盐
two-sludge BCR
denitrifying denitrification and phosphorus removal
biological membrane
nitrate
