NH_4^+-N与NO_2^--N对连续流CANON反应器运行性能的影响  

Effect of Ammonium and Nitrite on Performance of Continuous CANON Reactor

作　　者：付昆明[1,2] 张杰[1] 曹相生[1] 李冬[1] 孟雪征[1] 朱兆亮[1] 王俊安[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124 [2]北京建筑工程学院环境与能源工程学院城市雨水系统与水环境省部共建教育部重点实验室,北京100044

出　　处：《北京工业大学学报》2011年第7期1038-1044,共7页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50878003);北京市自然科学基金资助项目(8092006);城市水资源与水环境国家重点实验室开放基金资助项目(08UWQA08);国家重大科技专项水专项资助项目(2008ZX07208-003-003)

摘　　要：为提高CANON反应器的TN去除效率,采用在好氧条件下直接启动的CANON反应器进行试验.试验过程中,控制温度在35℃±1℃、pH在7.39~8.01、曝气量为31.2 m3/(m3.h)、ρ(DO)约1.5~2.0 mg/L,水力停留时间为3.7 h,分别进行了ρ(NH4+-N)与ρ(NO2--N)的试验.试验发现,在曝气量恒定的条件下,ρ(NH4+-N)过高或过低都不利于TN去除率的提高,在上述试验条件下,当ρ(NH4+-N)为310~360 mg/L时,获得超过75%的TN去除率.提高反应器中的ρ(NH4+-N)与ρ(NO2--N)有利于TN负荷的提高,但二者超过50 mg/L时,继续提高无益.在进水不包含有机碳源的条件下,CANON反应器出水的ρ(TN)依然较高,还需要进一步的处理来满足排放标准.To increase the TN （total inorganic nitrogen） removal efficiency, a CANON （completely autotrophic nitrogen-removal over nitrite） reactor, which started directly under aerobic conditions in the laboratory was used. The temperature was controlled at 35℃ ±1℃ , aeration rate was 31.2 m^3/（ m^3·h） , dissolved oxygen was about 1.5 - 2.0 mg/L, hydraulic retention time was 3.7 h respectively. Tests of ammonium and nitrite concentration on performance of CANON reactor were conducted. It is found that when the aeration rate is kept stable, it is not suitable to obtain high TN removal rate when the ammonium concentration is too high or too low. When the ammonium concentration is about 310 - 360 mg/L, a TN removal rate of more than 75% is gained under the above-mentioned conditions. Increasing the concentration of ammonium and nitrite in the reactor is beneficial to improve the TN removal load until both concentrations of ammonium and nitrite is more than 50 mg/L. When the CANON reactor is used to treat ammonium-rich wastewater without any organic carbon, the TN concentration in effluent is still high, and a further step is necessary to meet discharge standards.

关 键 词：高氨氮废水 亚硝酸盐 全程自氧脱氮 厌氧氨氧化 

分 类 号：X701.3[环境科学与工程—环境工程]