【摘要】：湖北西北部某工業(yè)園制藥企業(yè)以化學(xué)合成類制藥為主，其產(chǎn)生的廢水主要為生產(chǎn)類廢水，并與園區(qū)內(nèi)少量生活污水混合后進行集中處理。針對園區(qū)現(xiàn)有工藝處理（混凝反應(yīng)沉淀池+水解酸化池+MBR+消毒池）出水水質(zhì)不能達到《化學(xué)合成類制藥工業(yè)水污染排放標準》（GB21904-2008），提出采用鐵碳微電解作為原工藝前置強化預(yù)處理工藝。通過單因素及正交試驗進行分析探討，得到鐵碳微電解最佳運行參數(shù)，即鐵碳投加量為400g/L，鐵碳質(zhì)量比為4:5，反應(yīng)時間為3h，pH為4是鐵碳微電解預(yù)處理合成制藥廢水最佳組合參數(shù)，并采用該投配參數(shù)進行驗證試驗，進水COD為6090mg/L，出水COD為2627mg/L，其COD去除率可達56.87%。同時以廢水為研究對象，通過對鐵碳微電解出水COD濃度與時間的關(guān)系進行計算和線性擬合，得到鐵碳微電解降解該制藥廢水COD的反應(yīng)基本符合一級反應(yīng)動力學(xué)規(guī)律，擬合線型方程為-ln(Ci/C0)=0.00466t+0.01054，相關(guān)性高達0.9937，表明在該制藥廢水降解過程中，鐵碳微電解對COD去除起主要作用。 在單因素及正交實驗的基礎(chǔ)上，建立“鐵碳微電解/水解酸化/MBR”組合工藝模擬原工藝進行小試試驗。小試研究表明：鐵碳微電解對COD去除率達47.42%，預(yù)處理效果較好，經(jīng)鐵碳微電解后，廢水可生化性由0.23提升到0.38，促使后續(xù)工藝運行效果大幅提升，小試最終出水COD值達到《化學(xué)合成類制藥工業(yè)水污染排放標準》（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).
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X787

【參考文獻】

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本文編號：2294295