亚硝态氮对同时产甲烷反硝化工艺处理畜禽粪水的影响  

Eflect of nitrite nitrogen on simultaneous methanogenesis and denitrification technology for treating livestock wastewater

作　　者：刁明月 谢影[1] 彭绪亚[1] 李治阳[1] 申嫄[1] 何清明[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆水利电力职业技术学院,重庆402160

出　　处：《环境工程学报》2014年第4期1333-1338,共6页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2009ZX07104-002-04);重庆市科技重大专项(CSTC2008AB7135)

摘　　要：为进一步提高同时产甲烷反硝化反应对畜禽粪水化学需氧量(COD)和氮的去除效率,应用畜禽粪水于接种颗粒污泥的厌氧混合式反应器,进行不同COD与亚硝态氮浓度比值(COD/NO-2-N)对同时产甲烷反硝化反应的影响研究。通过实时监测反应器内COD、凯氏氮(TKN)、辅酶F420、β-葡萄糖苷酶、产气率、pH和氧化还原电位(ORP)等指标得出,COD/NO-2-N为30/1、40/1时,COD去除率、辅酶F420和β-葡萄糖苷酶含量与空白无亚硝态氮的变化规律一致,亚硝态氮几乎未对糖类水解菌及产甲烷菌活性产生抑制作用;而COD/NO-2-N为10/1、20/1时,COD去除率、辅酶F420和β-葡萄糖苷酶含量较低,糖类水解菌及产甲烷菌活性受到抑制。To improve the technique efficiency of removing chemical oxygen demand （COD） and nitrogen of livestock wastewater in simultaneous methanogenesis and denitrification, the effects of different concentration ratio associated with COD and nitrite nitrogen were analyzed. The experiment was conducted through livestock wastewater reacting in anaerobic mixing reactor which has seeded with granular sludge. Experimental results ob- tained by real time monitoring. The criteria are as follows：COD,total kjeidahl nitrogen （TKN）, eoenzyme F420, β- glueosidase,gas production rate,pH and oxidation-reduction potential （ORP）. The results show that the removal rate of COD,concentration of coenzyme F420 and β-glucosidase would be consistent with no nitrite nitrogen,when COD/NO2- N reaches to 30/1 and 40/1. It is indicated that nitrite nitrogen would have few inhibition on the activ- ity of carbohydrate hydrolysis bacteria and methanogens. Otherwise, when COD/NO2- N equals 10/1 and 20/1, the removal rate of COD,concentration of coenzyme F420andcglucosidase would be low,which implies high inhibition on the activity of carbohydrate hydrolysis bacteria and methanogens.

关 键 词：同时产甲烷反硝化 亚硝态氮 产甲烷菌 

分 类 号：X703.1[环境科学与工程—环境工程]