本文選題：黑臭底泥 + 微生物燃料電池��； 參考：《華南理工大學(xué)》2015年碩士論文

【摘要】：本研究利用黑臭河涌底泥、50 m M/L的鐵氰化鉀緩沖液、雙室型有機玻璃反應(yīng)器和質(zhì)子交換膜構(gòu)建了一種雙室型微生物燃料電池(Microbial fuel cell,MFC),通過改變MFC的運行條件,研究了電池的啟動及產(chǎn)電能力,分析了MFC對底泥的修復(fù)效果,并進一步研究了MFC產(chǎn)電過程中甲烷的排放情況。研究結(jié)論如下:(1)以底泥為陽極接種物,1 g/L的葡萄糖溶液為營養(yǎng)液,采用序批式培養(yǎng)方法啟動電池。經(jīng)過約720 h的運行后,MFC成功啟動,且電壓最高可達到0.767 V。啟動成功后,以底泥為陽極基質(zhì),能在較長時間內(nèi)(200 h)維持較高的電壓水平。(2)本研究分別以底泥、50 m M/L的鐵氰化鉀緩沖液構(gòu)建實驗系統(tǒng),每個運行周期均設(shè)置處理組和對照組進行實驗。在只改變外接電阻、對陰極室曝氣和添加鐵氰化鉀的運行周期中,各個電池的內(nèi)阻比較接近,均在1300Ω左右。電池的功率密度分別在外接電阻為1500Ω處、陰極室曝氣6 h和陰極室鐵氰化鉀濃度為200 m M/L時達到最大,對應(yīng)的最大功率密度分別為4.94 m W·m-2、6.00 m W·m-2和6.45 m W·m-2。在向陰極室添加氯化鈉溶液,改變?nèi)芤弘妼?dǎo)率和改變陽極基質(zhì)組成后,電池電阻有了較大變化。隨著氯化鈉濃度的增加,內(nèi)阻呈降低的趨勢,最大功率密度出現(xiàn)在氯化鈉濃度為200 m M/L處,為6.64 m W·m-2,內(nèi)阻為1140.4Ω。在泥水體積比例為1:1時,內(nèi)阻僅為902.1Ω,最大輸出功率密度為7.24 m W·m-2。電池內(nèi)阻整體上較大的原因主要是質(zhì)子交換膜的存在增大了內(nèi)阻,且底泥本身為泥水混合物,內(nèi)阻比水溶液要大許多。(3)構(gòu)建的雙室MFC系統(tǒng)能夠在產(chǎn)電的同時能實現(xiàn)對底泥的修復(fù)。研究結(jié)果表明,電極生物膜的存在大大促進了有機質(zhì)的降解。五個運行周期中,電池對底泥有機質(zhì)的最高去除率分別達到7.83%、11.65%、10.15%、11.35%和11.57%。有機質(zhì)的最高去除率均在電池的最大功率密度處達到。同一運行周期中,隨著功率密度的提升,有機質(zhì)的去除率增加。(4)陽極生物膜的存在在一定程度上達到了將磷從底泥中去除的效果。在以底泥有機質(zhì)為主要燃料來源時,系統(tǒng)的輸出功率密度變化與銨態(tài)氮的去除趨勢沒有呈現(xiàn)出特別明顯的規(guī)律。底質(zhì)中銨態(tài)氮可作為電子供體被生物膜氧化去除。陽極室的厭氧環(huán)境有利于反硝化作用對硝酸鹽的去除。同時,底泥中的硝酸鹽也是陽極潛在的電子競爭體,可作為電子受體,需要生物膜降解足夠電子供體來保證電子的提供以去除硝態(tài)氮。(5)構(gòu)建的雙室MFC系統(tǒng)在產(chǎn)電與修復(fù)底泥的同時加快了底泥中甲烷的排放速率。就各處理組而言,CH4表現(xiàn)出功率密度越大產(chǎn)生量越小的趨勢。在陽極室基質(zhì)相同時,甲烷的產(chǎn)生受到物質(zhì)傳遞與電子數(shù)量的影響。當(dāng)改變陽極室基質(zhì)時,基質(zhì)中有機物的種類與含量對甲烷產(chǎn)生有較大影響。(6)構(gòu)建的雙室MFC系統(tǒng)在產(chǎn)電與修復(fù)底泥的同時,也能影響CO2和N2O的產(chǎn)生與排放。CO2和N2O的產(chǎn)生和排放總體趨勢在同一個運行周期內(nèi)均呈現(xiàn)出隨著功率密度的變大而增加的趨勢。CO2的產(chǎn)生量與有機物降解有關(guān),有機物降解越多,相應(yīng)的CO2的產(chǎn)生量就越大。N2O的產(chǎn)生主要來源于反硝化作用。陽極室中厭氧環(huán)境有利于反硝化作用的發(fā)生。
[Abstract]:In this study, a double chamber microbiological fuel cell (Microbial fuel cell, MFC) was constructed with the bottom mud of black smelly river, 50 m M/L potassium ferricyanide buffer, double chamber organo glass reactor and proton exchange membrane. The starting and producing capacity of the battery were studied by changing the operating conditions of MFC, and the restoration effect of MFC to the sediment was analyzed. The emission of methane in the process of MFC production was further studied. The conclusions were as follows: (1) the anode inoculation with bottom mud and 1 g/L of glucose solution as nutrient solution were used to start the battery. After the operation of about 720 h, the MFC was successfully started and the maximum voltage could reach 0.767 V. and the anode substrate was used as the anode substrate. A higher voltage level can be maintained for a long time (200 h). (2) the experimental system was constructed in this study with sediment and potassium ferricyanide buffer solution of 50 m M/L respectively. Each operation period set the treatment group and the control group to experiment. In the operation period of only the external resistance, the aeration of the cathode chamber and the addition of potassium ferricyanide, each battery is inside. The power density of the battery is about 1300 Omega. The power density of the battery is at 1500 Omega, the cathode chamber aeration 6 h and the cathode chamber potassium ferricyanide concentration are 200 m M/L. The maximum power density is 4.94 m W. M-2,6.00 m W. M-2 and 6.45 m W. The Sodium Chloride Solution is added to the cathode chamber to change the solution electricity. The resistance of the battery has been greatly changed after the conductivity and the composition of the anode matrix. With the increase of NaCl concentration, the internal resistance is decreasing. The maximum power density appears at the concentration of 200 m M/L, which is 6.64 m W. M-2 and the internal resistance is 1140.4 Omega. The internal resistance is only 902.1 omega and the maximum output power density is 7.24 when the volume ratio of mud water is 1:1. The main reason for the overall internal resistance of M W / m-2. battery is that the existence of the proton exchange membrane increases the internal resistance, and the sediment itself is a muddy mixture, and the internal resistance is much larger than that of the water solution. (3) the double chamber MFC system can be built to repair the sediment at the same time in the production of electricity. In the five cycles, the maximum removal rates of organic matter to the bottom mud were 7.83%, 11.65%, 10.15%, 11.35% and 11.57%., the highest removal rate of organic matter was reached at the maximum power density of the battery. The removal rate of organic matter increased with the increase of power density. (4) anodic biofilm. When the organic matter in the sediment is the main source of fuel, the change of the output power density of the system and the removal of ammonium nitrogen do not show a special rule. The ammonium nitrogen in the substrate can be oxidized by the biofilm by the biofilm. The anaerobes of the anode chamber are removed. The environment is beneficial to the removal of nitrite by denitrification. At the same time, the nitrate in the sediment is also the potential electronic competitive body of the anode, which can be used as the electron acceptor, and the biofilm is required to degrade enough electron donor to ensure the supply of electrons to remove nitrate nitrogen. (5) the double room MFC system has accelerated the sediment in the bottom mud while producing electricity and repairing the sediment. The rate of the emission of alkane. As far as the treatment group is concerned, CH4 shows a trend of smaller power density. At the same time in the anode chamber matrix, the production of methane is affected by the transfer of material and the number of electrons. When the anode chamber matrix is changed, the types and content of organic matter in the matrix have a great influence on the production of methane. (6) the dual chamber MFC is constructed. At the same time, the system can affect the production and repair of the bottom mud, it can also affect the production and emission of CO2 and N2O and the general trend of emission and emission of.CO2 and N2O in the same cycle. The increasing trend of.CO2 is related to the degradation of organic matter. The more degradation of organic matter and the greater the amount of corresponding CO2 production The production of.N2O is mainly due to denitrification. The anaerobic environment in the anode chamber is conducive to denitrification.

【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X522;TM911.45

【參考文獻】

相關(guān)期刊論文 前10條

1 王維奇;曾從盛;仝川;;濕地甲烷產(chǎn)生的測定方法及主要控制因子研究綜述[J];亞熱帶資源與環(huán)境學(xué)報;2007年02期

2 林曉;袁斌;吳對林;呂松;;趕潮河涌污染修復(fù)的對策研究——以東莞市蜆涌河為例[J];廣東化工;2006年02期

3 諶偉;李小平;孫從軍;趙振;;低強度曝氣技術(shù)修復(fù)河道黑臭水體的可行性研究[J];中國給水排水;2009年01期

4 羅家海;;影響珠江廣州河段局部水體黑臭的主要原因剖析[J];廣州環(huán)境科學(xué);2001年02期

5 田偉君,翟金波;生物膜技術(shù)在污染河道治理中的應(yīng)用[J];環(huán)境保護;2003年08期

6 黃雁云;溫琰茂;任露陸;;珠三角城市河道污染特征及治理措施——以佛山水道為例[J];環(huán)境;2008年S1期

7 駱芳;秦雪娜;彭勃;;黑臭河流治理技術(shù)的研究進展[J];科技信息;2011年09期

8 張濤;高大文;;稻田CH_4排放研究進展[J];濕地科學(xué);2008年02期

9 鄂焱;仝川;王維奇;姚順;楊紅玉;;底物和電子受體對互花米草濕地沉積物甲烷產(chǎn)生潛力的影響[J];濕地科學(xué)與管理;2010年01期

10 仲海濤;吳啟堂;;從廢水中回收能源——微生物燃料電池和發(fā)酵生物制氫技術(shù)[J];可再生能源;2006年03期

相關(guān)博士學(xué)位論文 前1條

1 姜魯青;感潮河段沉積物—水界面營養(yǎng)鹽交換行為研究[D];中國海洋大學(xué);2011年

相關(guān)碩士學(xué)位論文 前3條

1 李程亮;底泥對氮磷的吸附及投加微生物對底泥磷釋放的影響[D];華中農(nóng)業(yè)大學(xué);2011年

2 李賀;無媒介雙室微生物燃料電池運行影響因素的研究[D];哈爾濱工業(yè)大學(xué);2006年

3 鄺臣坤;城市河涌受污染底泥的固化/穩(wěn)定化及其植生性能研究[D];華南理工大學(xué);2012年

，

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