摘要
就C/N对Carrousel 2000氧化沟同步脱氮除磷的影响进行了研究。结果表明,进水C/N值在5~13之间时,进水C/N不影响氧化沟系统对NH3-N的去除效果。出水NH3-N浓度〈1mg/L,平均去除率达到97.40%。当C/N低于11时,TN、TP的去除率随C/N的升高而快速大幅提高,分别从5时的26.47%和14.99%升至11时的93.48%和97.03%。当C/N〉11时,氧化沟TN去除率达到93.48%,TP去除率接近100%,氧化沟具有了良好的同步脱氮除磷的效果,出水水质满足国家《城镇污水处理厂污染物排放标准》(GB18918.2002一级A标准)要求。TP去除率与TN去除率相关系数R^2=0.985。
The effect of C/N ratio on simultaneous nitrogen and phosphorus removal in Carrousel 2000 oxidation ditch was studied. The experimental results show that when the influent C/N ratio was between 5 and 13, ammonia nitrogen removal efficiency in oxidation ditch was not affected by influent C/N ratio. The ammonia nitrogen concentration in the effluent was below 1 mg/L,the average removal rate was 97.40%. When influent C/N ratio was lower than 11, TN and TP removal rates increased sharply as C/N ratio increased,from 26.47% and 14.99% of 5 to 93.48% and 97.03% of 11 respectively. When influent C/N ratio was bigger than 11 ,TN removal rate was 93.48% , TP removal rate approached to 100%. Oxidation ditch achieved a good effect of simultaneous nitrogen and phosphorus removal. The characteristics of the effluent satisfied the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB18918-2002 primary standard A). The removal rate of TP was related to TN,the correlation index R^2 = 0. 9396.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第3期451-454,共4页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(50878058)
广东省自然科学基金资助项目(8151009101000015)
广州市教委科技计划项目(62018)
关键词
同步脱氮除磷
碳氮比
CARROUSEL氧化沟
simultaneous nitrogen and phosphorus removal
C/N ratio
Carrousel oxidation ditch