Zhou Yan-Qing, Hao Rui-Xia, Wang Zhen, Zhu Xiao-Xia, Wan Jing-Jing
Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing 100124, China.
Envionmental Engineering Assessment Center of Shaanxi Province, Xi'an 710054, China.
Huan Jing Ke Xue. 2016 Jun 8;37(6):2229-2234. doi: 10.13227/j.hjkx.2016.06.028.
To study the effects of sulfur/sponge iron ratio on denitrification and phosphorus removal, a series of static experiments were conducted using different ratios of sulfur and sponge iron. The results showed that the denitrification and phosphorus removal effect of sulfur/sponge iron composite fillers was significantly higher than that of single filler, and sulfur/sponge iron ratio was one of the key factors influencing nitrogen and phosphorus removal by composite fillers. When the volume ratio was equal to or greater than 1:1, the removal efficiency of TN and TP reached 85% and 97%, respectively. The denitrification and phosphorus removal process of the composite fillers both fitted second-order kinetic equation, the denitrification was dependent on heterotrophic denitrification and sulfur autotrophic denitrification; the phosphorus removal was mainly chemical phosphorus removal caused by sponge iron corrosion.
为研究硫/海绵铁比例对脱氮除磷效果的影响，采用不同硫与海绵铁比例进行了一系列静态实验。结果表明，硫/海绵铁复合填料的脱氮除磷效果显著高于单一填料，且硫/海绵铁比例是影响复合填料脱氮除磷的关键因素之一。当体积比等于或大于1:1时，TN和TP的去除效率分别达到85%和97%。复合填料的脱氮和除磷过程均符合二级动力学方程，脱氮依赖于异养反硝化和硫自养反硝化；除磷主要是由海绵铁腐蚀引起的化学除磷。
