铁碳微电解预处理制药废水实验研究
发布时间：2018-10-25 17:13
【摘要】：湖北西北部某工业园制药企业以化学合成类制药为主，其产生的废水主要为生产类废水，并与园区内少量生活污水混合后进行集中处理。针对园区现有工艺处理（混凝反应沉淀池+水解酸化池+MBR+消毒池）出水水质不能达到《化学合成类制药工业水污染排放标准》（GB21904-2008），提出采用铁碳微电解作为原工艺前置强化预处理工艺。通过单因素及正交试验进行分析探讨，得到铁碳微电解最佳运行参数，即铁碳投加量为400g/L，铁碳质量比为4:5，反应时间为3h，pH为4是铁碳微电解预处理合成制药废水最佳组合参数，并采用该投配参数进行验证试验，进水COD为6090mg/L，出水COD为2627mg/L，其COD去除率可达56.87%。同时以废水为研究对象，通过对铁碳微电解出水COD浓度与时间的关系进行计算和线性拟合，得到铁碳微电解降解该制药废水COD的反应基本符合一级反应动力学规律，拟合线型方程为-ln(Ci/C0)=0.00466t+0.01054，相关性高达0.9937，表明在该制药废水降解过程中，铁碳微电解对COD去除起主要作用。 在单因素及正交实验的基础上，建立“铁碳微电解/水解酸化/MBR”组合工艺模拟原工艺进行小试试验。小试研究表明：铁碳微电解对COD去除率达47.42%，预处理效果较好，经铁碳微电解后，废水可生化性由0.23提升到0.38，促使后续工艺运行效果大幅提升，小试最终出水COD值达到《化学合成类制药工业水污染排放标准》（GB21904-2008）。
[Abstract]:A pharmaceutical enterprise in an industrial park in northwestern Hubei province is mainly composed of chemical synthetic pharmaceutical. The wastewater produced is mainly production wastewater, which is mixed with a small amount of domestic sewage in the park for centralized treatment. In view of the fact that the effluent quality of the existing process treatment (hydrolytic acidification tank MBR sterilizing tank) in the park can not meet the Water pollution discharge Standard of Chemical synthetic Pharmaceutical Industry (GB21904-2008), the iron-carbon microelectrolysis is proposed as the original process. Pre-reinforcement pretreatment process. Through the analysis of single factor and orthogonal test, the optimum operating parameters of iron-carbon microelectrolysis were obtained. The optimum parameters of iron-carbon micro-electrolysis were as follows: the dosage of iron and carbon was 400 g / L, the ratio of iron to carbon was 4: 5, the reaction time was 3 h and pH was 4, which was the best combination parameter of iron-carbon micro-electrolysis pretreatment synthetic pharmaceutical wastewater. The COD of influent is 6090 mg / L, the COD of effluent is 2627 mg / L, and the removal rate of COD can reach 56.87%. At the same time, taking wastewater as the research object, the relationship between the concentration of COD and the time of iron and carbon microelectrolysis effluent was calculated and linear fitting. It was obtained that the degradation of COD in the pharmaceutical wastewater by iron and carbon microelectrolysis basically accords with the first-order reaction kinetics. The fitting linear equation is-ln (Ci/C0) = 0. 00466t 0.01054, the correlation is as high as 0. 9937, which indicates that iron and carbon microelectrolysis plays a major role in the removal of COD in the degradation process of the pharmaceutical wastewater. On the basis of single factor and orthogonal experiment, the combined process of "iron and carbon micro-electrolysis / hydrolytic acidification / MBR" was established to simulate the original process. The results showed that the removal rate of COD by iron and carbon microelectrolysis was 47.42, and the pretreatment effect was better. After micro-electrolysis of iron and carbon, the biodegradability of wastewater increased from 0.23 to 0.38, which promoted the operation effect of the subsequent process greatly. The COD value of the final effluent reached the Water pollution discharge Standard of Chemical synthetic Pharmaceutical Industry (GB21904-2008).
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X787
[Abstract]:A pharmaceutical enterprise in an industrial park in northwestern Hubei province is mainly composed of chemical synthetic pharmaceutical. The wastewater produced is mainly production wastewater, which is mixed with a small amount of domestic sewage in the park for centralized treatment. In view of the fact that the effluent quality of the existing process treatment (hydrolytic acidification tank MBR sterilizing tank) in the park can not meet the Water pollution discharge Standard of Chemical synthetic Pharmaceutical Industry (GB21904-2008), the iron-carbon microelectrolysis is proposed as the original process. Pre-reinforcement pretreatment process. Through the analysis of single factor and orthogonal test, the optimum operating parameters of iron-carbon microelectrolysis were obtained. The optimum parameters of iron-carbon micro-electrolysis were as follows: the dosage of iron and carbon was 400 g / L, the ratio of iron to carbon was 4: 5, the reaction time was 3 h and pH was 4, which was the best combination parameter of iron-carbon micro-electrolysis pretreatment synthetic pharmaceutical wastewater. The COD of influent is 6090 mg / L, the COD of effluent is 2627 mg / L, and the removal rate of COD can reach 56.87%. At the same time, taking wastewater as the research object, the relationship between the concentration of COD and the time of iron and carbon microelectrolysis effluent was calculated and linear fitting. It was obtained that the degradation of COD in the pharmaceutical wastewater by iron and carbon microelectrolysis basically accords with the first-order reaction kinetics. The fitting linear equation is-ln (Ci/C0) = 0. 00466t 0.01054, the correlation is as high as 0. 9937, which indicates that iron and carbon microelectrolysis plays a major role in the removal of COD in the degradation process of the pharmaceutical wastewater. On the basis of single factor and orthogonal experiment, the combined process of "iron and carbon micro-electrolysis / hydrolytic acidification / MBR" was established to simulate the original process. The results showed that the removal rate of COD by iron and carbon microelectrolysis was 47.42, and the pretreatment effect was better. After micro-electrolysis of iron and carbon, the biodegradability of wastewater increased from 0.23 to 0.38, which promoted the operation effect of the subsequent process greatly. The COD value of the final effluent reached the Water pollution discharge Standard of Chemical synthetic Pharmaceutical Industry (GB21904-2008).
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X787
【参考文献】
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1 周健;齐建华;何强;陈W，
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