CAJ | 학술논문

总结了新加坡樟宜回用水处理厂4次采样的结果,该厂日处理城市污水80万t.在好氧区很好地实现了部分硝化和亚硝酸盐积累,其中好氧氨氧化率平均为72.2%,亚硝酸盐积累率平均为76.0%.在缺氧区氨氮和亚硝酸盐得到了同步去除(厌氧氨氧化).物料衡算结果表明：初沉池的出水总氮的37.5%是通过自养脱氮去除,27.1%是通过传统的硝化/反硝化脱氮去除,其余部分总氮则存在于活性污泥和出水中.微生物和动力学研究表明：短悬浮或游离的厌氧氨氧化菌可存在于污泥龄较短的污水处理系统.最后从出水氮质量浓度、pH、碱度、曝气能耗及反应器容积等方面,将樟宜回用水处理厂的分段进水活性污泥法工艺与新加坡其他3个回用水处理厂的MEL/LE工艺进行了对比分析.
총결료신가파장의회용수처리엄4차채양적결과,해엄일처리성시오수80만t.재호양구흔호지실현료부분초화화아초산염적루,기중호양안양화솔평균위72.2%,아초산염적루솔평균위76.0%.재결양구안담화아초산염득도료동보거제(염양안양화).물료형산결과표명：초침지적출수총담적37.5%시통과자양탈담거제,27.1%시통과전통적초화/반초화탈담거제,기여부분총담칙존재우활성오니화출수중.미생물화동역학연구표명：단현부혹유리적염양안양화균가존재우오니령교단적오수처리계통.최후종출수담질량농도、pH、감도、폭기능모급반응기용적등방면,장장의회용수처리엄적분단진수활성오니법공예여신가파기타3개회용수처리엄적MEL/LE공예진행료대비분석.
This paper summarizes the results of four sampling programs in Changi Water Reclamation Plant ( WRP) in Singapore, which has a treatment capacity of 800 000 m3/d of municipal wastewater. Partial nitritation (72. 2% of percentage on average) and nitrite shunt ( nitrite accumulation ratio, NAR of 76. 0% on average ) were well established in the aerobic zones. NH4+ removal coupled with NO2-reduction ( Anammox process ) was observed in the anoxic zones. Mass balance showed autotrophic nitrogen removal contributed to 37. 5% removal of the total nitrogen in the primary effluent, while conventional denitritation/denitrification contributed to 27. 1% removal, and the rest was in wasting sludge and final effluent. Microbial and kinetic studies supported the hypothesis that suspension/free cells of Anammox bacteria were able to be retained in such a short SRT process. The comparisons between the process in Changi WRP and the MLE/LE processes in other three WRPs in Singapore with respect to nitrogen concentrations, pH, and alkalinity of the effluent, aeration energy consumption and reactor volume were presented and discussed.