产甲烷反硝化工艺处理畜禽粪液可行性试验研究

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50d的启动运行中,当反应器中COD和NO2--N负荷分别从1.5kg·m^-3·d^-1和0.15kg·m^-3·d^-1逐渐增加至10.5kg·m^-3·d^-1和1.05kg·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2kg·m^-3·d^-1和0.2kg·m^-3·d^-1逐渐提高至7kg·m^-3·d^-1和0.7kg·m^-3·d^-1后,COD去除率从50%逐渐提高至80%,亚硝态氮去除率大于98%。因此,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。

Feasibility Analysis on the Treatment of Animal Manure with Denitrification and Methanogenesis Process

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 1.5 to 10.5 kg·m^-3·d^-1 and that of NO2——N from 0.15 to 1.05 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 0.2 to 0.7 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.