电极-生物膜法在生物脱氮处理中的潜力

阐述了以氢自养型反硝化为基础的电极-生物膜法及其在脱氮处理中的优势;着重从电极材料、工艺布置和影响处理效果的因素等方面对该技术进行了分析;对如何利用惰性阳极电解产氧来促进生物硝化,以开发出更加高效、环保的脱氮工艺提出了新思路:即电解产氧为主,曝气为辅,控制适当的水力停留时间,并主要通过电流调节控制氧水平,实现亚硝酸盐积累;同时利用电解产氢为电子供体进行反硝化,使限氧的硝酸盐型脱氮在BER中得以实现。

Potential of biofilm-electrode process in biological nitrogen removal

Biofilm-electrode process based on autohydrogentrophic denitrification and its advantages were elaborated,with the electrode material,disposal of the process,factors influencing the treatment effect and some other aspects of the said technology emphatically analyzed.A new idea of developing a more effective and cleaner process was proposed,which using oxygen derived from inert anode electrolysis to accelerate the biological nitration.The process theory was: In order to realize the accumulation of nitrite,HRT was controlled mainly through adjusting oxygen derived from electrolysis,with aeration as the auxiliary treatment;as well as the oxygen level was controlled by adjusting the electrical current.Meanwhile,the denitrification was carried out with hydrogen derived from electrolysis as electron donor so as to realize the generation of nitrogen from nitrate under the oxygen-limited condition in BER.