固定化包埋硝化菌去除源水中氨氮研究  

Study on Removing Ammonia Nitrogen from Drinking Source Water by Using Immobilized Nitrobacteria

作　　者：葛晓虹[1] 张振家[1] 王毅军[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《中国给水排水》2006年第3期51-54,共4页China Water & Wastewater

摘　　要：采用固定化包埋技术将硝化菌包埋在半透性聚合物内，并利用内循环流化床生物反应器（包埋颗粒的体积填充率为10％）进行了处理低浓度氨氮人工配水的连续流试验，同时借助扫描电子显微镜对包埋硝化菌菌群的分布进行了分析。结果表明，在水温为20～30℃、DO为3～4mg／L的条件下，当进水NH4^＋～N为10～15mg／L、HRT为30min时，对NH4^＋-N的去除率〉90％；当进水NH4^＋-N〈10mg／L、HRT为27min时，出水NH4^＋-N和NO2^--N浓度都稳定在0．25mg／L以下，且出水pH值维持在7．2～7．3，NH4^＋-N去除负荷达256．1mg／（L·h）。颗粒的呼吸活性从驯化阶段的319．4mg／（L·h）增至高效段的1170．9mg/（L·h）。The removal of ammonia nitrogen at a low immobilized nitrobacteria pellets （ 10% pellets stuffing ratio idized bed reactor was investigated with the system operated ture 20 -30 ℃, DO 3 -4 mg/L. The situation of microbe concentration in synthetic drinking water by in volume） in inner-circulated biological flucontinuously under the condition of tempera- growth and distribution of immobilized nitrobacteria was observed with scanning electron microscope. The results show that the removal rate for NHf - N remains above 90% at the influent concentration of 10 - 15 mg/L with the hydraulic retention time controlled at 30 min. When the influent concentration is below 10 mg/L, both the concentrations of effluent NH4^＋ - N and NO2^- - N are below 0.25 mg/L after 27 min. The pH value of the effluent remains at 7.2 -7.3 automatically. The NH4^＋ -N removal loading can reach 256.1 mg/（ L · h）. The oxygen uptake rate rises from 319.4 mg/（ L· h） in the phase of acclimation to 1 170.9 mg/（ L · h） in the phase of efficient operation.

关 键 词：固定化包埋硝化菌 氨氮 内循环流化床 

分 类 号：TU991.2[建筑科学—市政工程]