[产甲烷反硝化工艺处理畜禽粪液可行性试验研究] 硝化甲烷

产甲烷反硝化工艺处理畜禽粪液可行性试验研究 硝化甲烷 摘 要：接种颗粒污泥于厌氧反应器，以含有葡萄糖和亚硝氮的模拟废水为进水，进行同一反应器产甲烷反硝化的研究。结果表明，在50 d的开启运行中，当反应器中COD和NO2-N负荷分别从 kg?m-3?d-1和 kg?m-3?d-1逐步增加至 kg?m-3?d-1和 kg?m。-3?d-1后，COD去除率大于80%，NO2-N去除率大于98%；反应器稳定运行后对畜禽粪液进行处理，当COD和NO2-N负荷分别从2 kg?m-3?d-1和 kg?m-3?d-1逐步提升至7 kg?m-3?d-1和 kg?m-3?d-1后，COD去除率从50%逐步提升至80%，亚硝态氮去除率大于98%。所以，同一反应器产甲烷反硝化去除畜禽粪液有机质和氮是可行的。关键词：畜禽粪液；反硝化；脱氮；产甲烷中图分类号：文件标志码：A文章编号：1674-476404-0131-05Feasibility Analysis on the Treatment of Animal Manure with Denitrification and Methanogenesis ProcessPENG Xuya, LI Zhiyang, HONG Junhua, HE Qingming, LIU YuhaoAbstract:The anaerobic granular sludge was inoculated in an anaerobic reactor, and the simulated wastewater containing glucose and nitrite was used to analyse the process of methanogenesis and dennitrication. The results showed that while the loading rate of COD was increased from to kg?m-3?d-1 and that of NO2- -N from to kg?m-3?d-1 during the 50 d operation ofof the reactor, the removal efficiencies of COD and NO2- -N reached more than 80% and 98%, respectively. The reactor was used to treat the animal manure. The removal efficiency of COD was increased from 50% to 80% and that of NO2- -N reached more than 98%, while the loading rate of COD increased from 2 to 7 kg?m-3?d-1, and NO2- -N from to kg?m-3?d-1. Therefore, the results indicated that it was possible to remove bots nitrogen and organic matter of the animal manure through denitrification and methanogenesis process in the same reactor.Key words:animal manure; denitrification; nitrogen removal; methanogenesis重庆三峡库区众多的畜禽养殖场建在次级支流沿岸，畜禽排放物大多未经处理直接排入水体，畜禽粪液已成为三峡水库的关键污染源之一，严重威胁三峡库区水环境安全，且伴随经济的增加，养殖业必将深入发展，其畜禽粪液必将会对环境造成更严重的影响，所以，开发高效经济的畜禽粪液处理技术含有必须性和迫切性。现在，在同一反应器进行产甲烷反硝化方面我国外学者进行了有意义的研究。Lin1提出应用同时产甲烷反硝化去除有机质和氮源，并提出了厌氧同时反硝化产甲烷颗粒污泥的代谢模型。Hendriksen2以含有挥发性脂肪酸和硝酸盐的模拟废水为进水，在UASB反应器成功实现了同时反硝化产甲烷反应；An3，Zhang4，Im5，Peng6，Corral7在废水处理过程中应用了同时产甲烷反硝化技术处理不一样的有机废水。陈莉莉8在UASB反应器中成功实现了同时产甲烷反硝化，其COD和NO3-N负荷分别达 kg?m-3d-1和 kg?m-3d-1时，二者去除率分别达95%和靠近100%。孙宏伟9应用UASB-A/O系统同时深度去除高浓度有机物和氨氮的渗滤液，在原液COD平均为6 537 mg?L-1，NH4+-N为2 021 mg?L-1的条件下，系统COD和NH4+-N去除率分别为954%和%；袁志丹10应用同时产甲烷反硝化反应器和好氧硝化反应器串联处理实际淀粉废水，将好氧反应器的硝化液出水按1:13:1的回流比回流到UASB反应器，实现同时产甲烷反硝化；孙寓娇11，迟文涛12-13，祖波14，韩晓宇15也对同时产甲烷反硝化进行了一定的研究，不过利用上流式反应器产甲烷反硝化不适合处理高悬浮物的畜禽粪液，故提出于完全混合式反应器产甲烷反硝化去除畜禽粪液中的有机质和氮。