Sun Ya-Li, Zhang Guo-Chen, Yan Zhong, Li Xiu-Jin, Wang Kai-Jun
Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Huan Jing Ke Xue. 2010 Jun;31(6):1494-8.
In this research, COD release of rotten wood was studied and rotten wood was investigated as the sole carbon source as well as biofilm carrier to remove nitrate from wastewater in up-flow laboratory reactor. The experimental results indicated that rotten wood could release carbon source continuously. COD released of rotten wood inoculated with humus was 2. 3 times higher than that of sterilized rotten wood, and VFA was 5 times. The research of denitrification was carried out at 25 degrees +/- 1 degrees C, 30 mg/L of initial NO3(-) -N concentration and 12 h of hydraulic retention time. Nitrate removal efficiency was above 80%. A time-dependent decrease in nitrate removal efficiency was observed after 46 days of operation. The results showed that rotten wood could be used as an effective carbon source for denitrification.
本研究对腐朽木材的化学需氧量（COD）释放情况进行了研究，并将腐朽木材作为唯一碳源及生物膜载体，用于上流式实验室反应器中去除废水中的硝酸盐。实验结果表明，腐朽木材能够持续释放碳源。接种腐殖质的腐朽木材的COD释放量比灭菌腐朽木材高2.3倍，挥发性脂肪酸（VFA）则高5倍。反硝化研究在25℃±1℃、初始硝酸根离子（NO3(-) -N）浓度为30mg/L以及水力停留时间为12小时的条件下进行。硝酸盐去除效率高于80%。运行46天后，观察到硝酸盐去除效率随时间下降。结果表明，腐朽木材可作为有效的反硝化碳源。
