【作者】 解岩；

【导师】 孙秀云； 罗人明；

【作者基本信息】 南京理工大学 ， 环境工程， 2007， 硕士

【摘要】 青霉素废水成份复杂、含有大量微生物难以降解，甚至对微生物有抑制作用的物质，可生化性较差。针对目前采用常规的生物工艺处理该类废水投资大，处理效果差，难以稳定达标的现状，本论文在全面分析青霉素废水水质的基础上，提出了“水解酸化-膜生物反应”处理工艺，进行了小试研究。通过对青霉素废水进行水解酸化反应试验，发现在不同稀释倍数时，水解酸化反应水力停留时间为6h～10h时，总有机酸酸化率达到10％左右，COD_cr去除率20％左右，废水的可生化性大大提高(BOD₅／COD_cr从0.31提高到了0.40左右)。通过对青霉素废水进行膜生物反应（MBR）工艺处理的研究，发现MBR的COD_cr运行负荷达到6 kg／m³·d～8kg／m³·d，去除率90％左右；系统COD_cr和总氮去除率可稳定在90％和60％以上。研究确定了膜生物反应器的优化工艺参数，其中微生物固体平均停留时间（SRT）为20d、水力停留时间（HRT）为10h～12h、污泥浓度（MLSS）为8g／L～12g／L左右。研究结论为水解酸化-膜生物反应工艺的实际应用提供了相关参数和方法指导。更多还原

【Abstract】 The composition of the penicillin wastewater is complicated, includes a great deal of matters that are hard to degrade by microbe or even repress the activities of the microbe. Since the conventional treatment processes need large investment, have low-efficiency and are difficult to steadily reach the discharge standards. In the paper, the process of "hydrolytic acidification - MBR" was put forward on the basis of the overall analysis of the penicillin wastewater quality, and a set of laboratory experiment equipments was built up.Through the hydrolytic acidification experiments on the penicillin wastewater, it could be found that the total organic acid rate is up to 10%, the COD_cr removal rate is about 25%, and the biodegradability of this wastewater improve greatly (BOD₅/COD_cr increase from 0.31 to 0.40 or so), with different dilute proportion ,when the HRT is about 6 h～10 h.On the research of the treatment processes of the penicillin wastewater with MBR, the operation load of MBR reach 6 kg/m².d～8 kg/m³.d, the removal rate of COD_cr reach about 90%,the COD_cr and total nitrogen removal rate of the whole system reach about 90% and 60%. The research has determined the optimized craft parameters of the MBR, among which the SRT is 20d, the HRT is 10 h～12 h, the MLSS is about 8g/L～12g～L.The conclusion of the research could supply related operational parameter and method for practicality application of the "hydrolytic acidification -MBR".更多还原