Yi Peng, Zhang Shu-Jun, Gan Yi-Ping, Chang Jiang, Peng Yong-Zhen, Cao Xiang-Sheng
Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
Huan Jing Ke Xue. 2010 Oct;31(10):2390-7.
Using a three-sludge system consisted of anaerobic/oxic (A/O) process, partial nitritation and anaerobic ammonium oxidation (ANAMMOX) reactors, cost-effective removal of nitrogen and phosphate from municipal wastewater was achieved. The experimental results showed that effluent total phosphorus (TP) of the A/O system was less than 0.5 mg/L under hydraulic retention time (HRT) of 3.6 h. Partial nitritation with nitrite accumulation efficiency of 75% -96% was realized in the partial nitritation system under room temperature, DO < 0.2 mg/L and HRT of 4.6 h. Under temperature of 27-30 degrees C and HRT of 1.4 h, effluent total nitrogen (TN) and TN removal rate of ANAMMOX reactor were less than 8 mg/L with the minimum value of 1.6 mg/L and 0.57 kg/(m3 x d), respectively. In the three-sludge system, phosphate accumulating organisms, ammonia-oxidizing bacteria and Anammox bacteria existed under suitably environmental condition to optimize the microbial community structure and improve treatment efficiency of various units. Autotrophic nitrogen removal can reduce 62.5% of the oxygen supply, save 100% of denitrification carbon sources theoretically, lower the sludge production, and greatly decrease carbon dioxide emission. As compared to traditional biological nutrient removal process, the three-sludge system has great advantages and potential in energy saving and carbon dioxide emission reduction to realize sustainable development of water resources.
采用由厌氧/好氧（A/O）工艺、部分亚硝化和厌氧氨氧化（ANAMMOX）反应器组成的三污泥系统，实现了从城市污水中经济高效地去除氮和磷。实验结果表明，在水力停留时间（HRT）为3.6 h的条件下，A/O系统的出水总磷（TP）小于0.5 mg/L。在室温、溶解氧（DO）<0.2 mg/L和HRT为4.6 h的条件下，部分亚硝化系统实现了亚硝酸盐积累效率为75%-96%的部分亚硝化。在27-30℃的温度和1.4 h的HRT条件下，ANAMMOX反应器的出水总氮（TN）和TN去除率分别小于8 mg/L，最小值分别为1.6 mg/L和0.57 kg/(m³·d)。在三污泥系统中，在适宜的环境条件下存在聚磷菌、氨氧化细菌和厌氧氨氧化细菌，以优化微生物群落结构并提高各单元的处理效率。自养脱氮可减少62.5%的氧气供应，理论上节省100%的反硝化碳源，降低污泥产量，并大幅减少二氧化碳排放。与传统生物营养物去除工艺相比，三污泥系统在节能和减少二氧化碳排放以实现水资源可持续发展方面具有巨大优势和潜力。
