【作者】 赵贤慧；

【导师】 邵林广；

【作者基本信息】 武汉科技大学 ， 环境工程， 2003， 硕士

【摘要】 本课题针对我国南方城市污水处理工艺现状及存在的问题，结合南方城市污水浓度普遍偏低的特点，提出“厌氧水解—生物接触氧化工艺”。并对该工艺处理低浓度城市污水的处理效果、运行特性、以及生物降解动力学等方面进行了试验研究。 试验研究表明，厌氧水解—生物接触氧化工艺启动快、抗冲击负荷能力强、污泥产率低，出水水质稳定。在常温下，当水力停留时间为6h时，系统对低浓度城市污水处理效果良好，对CODcr、BOD₅、SS、NH₃-N的平均去除率分别为77.6％、80.9％、88.6％、67.4％，其出水可达到国家《污水综合排放标准》（GB8978—1996）一级标准，在回流比为200％时，系统对总氮的去除率可达55.6％，随着回流比的增加，系统对有机物、氨氮、总氮的去除率有所增加。试验得出了厌氧水解段处理低浓度污水的基质降解动力学模型：U=0.002Se，生物接触氧化段处理低浓度污水的基质降解动力学模型：U=263·（S_e-S_n）/226+（S_e-S_n）。 此外，在经济上，厌氧水解—生物接触氧化工艺与传统工艺比较有较大优势，具有投资省、能耗低、处理效率高的特点，对南方城市污水处理厂的建设和工艺改造具有现实意义。更多还原

【Abstract】 Aiming at the problems in municipal wastewater treatment process, this paper presents Hydrolysis and Bio-contact oxidation process based on the fact of the lower concentration wastewater in South China, and test was made on low concentration sewage treatment effect, operational property, kinetics, and so on.The test result showed that Hydrolysis and Bio-contact oxidation process can start quickly, work steadily, have low sludge production and excellent ability of bearing high impact loads .Under the normal temperature, when the hydraulic retention time(HRT) is 6h, the general removal rate of CODcr BOD5 suspended solids and ammonia nitrogen are found to be 77.6% 80.9% 88.6% 67.4%. The effluent concentration can up to national primary emission standard of wastewater (GB8978-1996) When the recycle rate is 200%, the removal rate of total nitrogen is 55.6%, and with the increase of recycle rate, the removal rate of organic ammonia nitrogen and total nitrogen will increase. In the test, a kinetics model of organic biodegradation was established , in Hydrolysis tank , which is U=0.002Se , as isin Bio-contact oxidation tank.Comparing with traditional treatment process, the costs of construction and operation of Hydrolysis and Bio-contact oxidation process is much lower, Hydrolysis and Bio-contact oxidation has reality significance on the construction and process alteration of wastewater treatment plants in South China更多还原