【作者】 兰雯；

【导师】 王双飞；

【作者基本信息】 广西大学 ， 环境工程， 2007， 硕士

【摘要】 上流式多级厌氧反应器(UMAR)是一种新型高效的厌氧反应器，具有投资少、占地面积小、有机负荷高、出水稳定和耐冲击负荷能力强等特点。本研究采用UMAR反应器对糖蜜酒精废水进行试验研究，试验结果表明：在进水COD浓度7400mg／l，水力停留时间(HRT)为7.1h，进水温度控制在35～37℃，pH值为7.0～7.2时，UMAR反应器对COD的去除率可达到81％。此外，试验还对UMAR反应器的启动性能、稳定运行特性、抗冲击负荷性能和再次启动性能进行了研究。试验表明：UMAR反应器在处理糖蜜酒精废水时，具有启动周期较短、负荷提高快、COD容积负荷和去除率高等优点。当容积负荷达到11kgCOD／(m~3·d)时，COD去除率达到80％左右。试验结果表明：UMAR反应器运行稳定，对有机物的去除效果好，抗冲击负荷能力强。反应器水力停留时间缩短至4.2h时，COD去除率可达到73％左右，容积负荷达40.5 kgCOD／(m~3·d)时，COD去除率仍可保持在65％以上，反应器在中断运行一段时间后，能快速恢复处理能力。反应器的启动结束后，颗粒污泥性质发生显著变化，污泥颜色加深，颗粒污泥平均直径由0.5-1.3mm增加到1.2-4.0mm，颗粒污泥最大沉降速度达到104.5m／h，比产甲烷活性是接种污泥的1.6倍，VSS／TSS值增加了6.9％。对反应器内的颗粒污泥进行的扫描电镜观察表明，颗粒污泥表面的菌种以球状菌、杆状菌和丝状菌为主，大量的丝状菌把球状菌和杆状菌紧紧地缠绕在一起。更多还原

【Abstract】 The Up-flow multistage anaerobic reactor (UMAR) is a new style and high efficiencyanaerobic reactor. It can be operated at high volume loading rates and high liquid up-flowvelocity with low investment cost and space occupation. The study on the UMAR dispose ofthe molasses alcohol wastewater indicates that the UMAR system can show it’s COD removalrate with 81%, when the influent temperature is controlled between 35～37℃, COD7400mg/l,pH 7.0～7.2, hydraulic retention time 7.1h.In addition, the experiment researched on the capacity of startup, stable running, resistimpact and re-startup of the UMAR system. The experiment shows that the UMAR has theadvantages of short startup period, loading enhance fast, high COD volumetric loading rateand COD removal rate.When the volumetric loading rate reached 11kgCOD/(m~3·d), and the COD removal wasabout 80%. After the system running had finished, the UMAR displayed its characteristics ofrunning stably, organic matter removal effect better and resist impact capacity strongly. In theaddition of hydraulic retention time 4.2h, the COD removal was 73%, when the volumetricloading rate reached 11kgCOD/(m~3·d), the COD removal was about 80%. The dispose effectof the UMAR could recover quickly after a long periods of time.Ater the startup, the characters of the granular sludge changed remarkably. The granularsludge was darker, the particle size obviously increased from 0.5-1.3mm to 1.2-4.0mm, thesedimentation capability was 104.5m/h, contrasted to the vaccination sludge, the specific methanogenic activity increased to 1.6 times, VSS/TSS value increased to 6.9%. ThroughSEM, granular sludge was covered by massive ball bacterium、bacillus and filamentousbacteria mainly, filamentous bacteria mutually twined the ball bacterium and bacillusbacteria.更多还原