【摘要】：厭氧自電解(Anaerobic self-electrolysis,ASE)將無(wú)能耗微電解、微生物降解和生物電化學(xué)工藝融為一體,回收利用有機(jī)物微生物降解過(guò)程中產(chǎn)生的質(zhì)子和電子使得反應(yīng)器形成電勢(shì)差進(jìn)而產(chǎn)生電流,凈化廢水。本研究以豬場(chǎng)廢水、模擬豬場(chǎng)廢水啟動(dòng)、運(yùn)行厭氧自電解反應(yīng)器,考察臭味組分去除效果、氨氮損失途徑以及金霉素、磺胺二甲嘧啶、羅紅霉素及諾氟沙星等抗生素對(duì)厭氧自電解體系產(chǎn)電除污性能影響以及抗生素在厭氧自電解體系中的去除效果。主要結(jié)果如下:(1)通過(guò)度量電化學(xué)指標(biāo)和進(jìn)出水水質(zhì),考察了構(gòu)建的厭氧自電解反應(yīng)器處理豬場(chǎng)廢水原水的效果。結(jié)果表明,成功啟動(dòng)后,反應(yīng)器ASE-8和ASE-0(對(duì)照)在連續(xù)流條件下的電壓及最大功率密度分別穩(wěn)定在0.527 V、5.76 W/m3和0.503 V、7.37 W/m3。出水COD去除率86.57~87.27%,總氮去除率可達(dá)51.57~52.90%,氨氮和硝氮的去除率分別為31.03~37.27%和79.45~84.03%�？梢钥闯�,構(gòu)建的厭氧自電解反應(yīng)器能夠有效凈化豬場(chǎng)廢水。(2)在反應(yīng)器處理豬場(chǎng)廢水穩(wěn)定運(yùn)行情況下,采用GC-FID法對(duì)反應(yīng)器ASE-8和ASE-0進(jìn)出水11種臭味組分進(jìn)行檢測(cè),研究了厭氧自電解過(guò)程對(duì)豬場(chǎng)廢水臭味去除的效果。結(jié)果顯示,大部分臭味組分如異丁酸、丁酸、己酸、糞臭素去除率達(dá)100%。從而說(shuō)明厭氧自電解技術(shù)能夠有效去除豬場(chǎng)廢水中的臭味。(3)通過(guò)收集陰極揮發(fā)氨、FISH法檢測(cè)氨氧化和厭氧氨氧化等特征菌存在與否,分析了ASE體系中氨氮損失途徑。結(jié)果表明,在ASE反應(yīng)器處理廢水過(guò)程中,氨氮以5.4 mg/(d·m2)速率從陰極揮發(fā),FISH檢測(cè)出陽(yáng)極碳?xì)�、活性炭均有氨氧化和厭氧氨氧化菌的存在。這說(shuō)明陰極氨揮發(fā)、氨氧化、厭氧氨氧化等途徑均存在與厭氧自電解體系中,共同協(xié)助實(shí)現(xiàn)體系氨氮的損失。(4)以模擬豬場(chǎng)廢水為底物,依次添加金霉素、磺胺二甲嘧啶、羅紅霉素及諾氟沙星四種抗生素,通過(guò)度量電化學(xué)指標(biāo)、水質(zhì)指標(biāo)及進(jìn)出水抗生素LC-MS分析,考察了抗生素對(duì)ASE體系產(chǎn)電除污性能影響和ASE體系去除抗生素的效果。結(jié)果表明,金霉素、磺胺二甲嘧啶、羅紅霉素及諾氟沙星四種抗生素依次添加后,ASE輸出電壓明顯降低,由0.51 V降至0.41 V�？股貪舛冉档蜁r(shí),輸出電壓有所上升,而COD、總氮、硝態(tài)氮等污染物去除效果沒(méi)有明顯變化,氨氮、總磷的去除效果則有明顯好轉(zhuǎn)。同時(shí),抗生素的LC-MS分析結(jié)果顯示,金霉素、羅紅霉素及諾氟沙星四類(lèi)抗生素得到有效去除,去除率可達(dá)100%,而出水磺胺二甲嘧啶濃度低于0.1μg/L,去除率達(dá)99.9%。這表明抗生素可明顯抑制ASE產(chǎn)電性能但對(duì)出水水質(zhì)影響不大,ASE過(guò)程對(duì)典型抗生素有明顯的去除作用。
[Abstract]:Anaerobic autoelectrolysis (Anaerobic self-electrolysis,ASE) integrates energy free microelectrolysis, microbial degradation and bioelectrochemistry. The proton and electron produced in the process of microbial degradation of organic matter make the reactor form potential difference and generate electric current to purify the wastewater. In this study, the anaerobic autoelectrolysis reactor was run with pig farm wastewater and simulated pig farm wastewater. The removal efficiency of odor components, ammonia nitrogen loss pathway, chlortetracycline and sulfadimethazine were investigated. The effects of antibiotics such as roxithromycin and norfloxacin on the performance of electricity production and decontamination in anaerobic autoelectrolysis system and the removal effect of antibiotics in anaerobic autoelectrolysis system were studied. The main results are as follows: (1) the effect of anaerobic autoelectrolysis reactor on raw water treatment of pig farm wastewater was investigated by measuring electrochemical indexes and water quality. The results showed that the voltage and maximum power density of ASE-8 and ASE-0 were stable at 0.527 V / V 5.76 W/m3 and 0.503 V / 7. 37 W / m ~ (3), respectively. The removal rate of COD in effluent was 86.57 ~ 87.27 and the removal rate of total nitrogen was 51.57 ~ 52.90. The removal rates of ammonia nitrogen and nitrate nitrogen were 31.03 ~ 37.27% and 79.45 ~ 84.03 respectively. It can be seen that the constructed anaerobic autoelectrolysis reactor can effectively purify the wastewater from pig farm. (2) under the condition of stable operation of the reactor for treatment of pig farm wastewater, In this paper, GC-FID method was used to detect 11 odor components of ASE-8 and ASE-0 inlet and outlet water, and the effect of anaerobic autoelectrolysis on the removal of odor from pig farm wastewater was studied. The results showed that the removal rate of most odor components such as isobutyric acid, caproic acid and faecal odor was 100. It is concluded that anaerobic autoelectrolysis can effectively remove the odour in the wastewater from pig farm. (3) the ammonia nitrogen loss in ASE system is analyzed by collecting ammonia from cathode volatile ammonia and detecting the presence of ammonia oxidation and anaerobic ammonia oxidation by FISH method. The results showed that ammonia nitrogen volatilized from cathode at 5.4 mg/ (d m 2) rate in ASE reactor, and anodic carbon felt was detected by FISH. There were ammonia oxidation and anaerobic ammonia oxidation bacteria in activated carbon. This shows that ammonia volatilization, ammonia oxidation and anaerobic ammonia oxidation all exist in anaerobic-autoelectrolysis system, and help to realize ammonia nitrogen loss. (4) chlortetracycline and sulfadimethazine are added to simulated pig wastewater as substrate. Four kinds of antibiotics, roxithromycin and norfloxacin, were measured and analyzed by electrochemical index, water quality index and LC-MS analysis. The effects of antibiotics on the electric decontamination of ASE system and the removal of antibiotics by ASE system were investigated. The results showed that the output voltage of ASE decreased from 0. 51 V to 0. 41 V after the addition of chlortetracycline, sulfamethazine, roxithromycin and norfloxacin. When the concentration of antibiotics decreased, the output voltage increased, while the removal efficiency of total COD, nitrogen, nitrate nitrogen and other pollutants did not change obviously, while the removal efficiency of ammonia nitrogen and total phosphorus was improved obviously. At the same time, LC-MS analysis of antibiotics showed that chlortetracycline, roxithromycin and norfloxacin were effectively removed, the removal rate was up to 100, and the concentration of sulfadimethazine in water was less than 0.1 渭 g / L, The removal rate is 99.9%. The results showed that antibiotics could significantly inhibit the electrical properties of ASE, but had little effect on the effluent quality. The typical antibiotics could be removed by ASE process.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：X713

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