本文關(guān)鍵詞：連續(xù)攪拌微生物電化學(xué)系統(tǒng)處理高濃度模擬廢水的效能　出處：《哈爾濱工業(yè)大學(xué)學(xué)報》2017年08期 　論文類型：期刊論文

  更多相關(guān)文章： 連續(xù)攪拌微生物電化學(xué)系統(tǒng) 連續(xù)攪拌釜式反應(yīng)器 電能輸出 COD去除率 焦磷酸測序

【摘要】：微生物電化學(xué)系統(tǒng)在面向?qū)嶋H廢水處理時,表現(xiàn)出產(chǎn)電性能下降、出水水質(zhì)差等缺點.為了提高其處理中高濃度、含發(fā)酵類底物廢水的性能,將連續(xù)攪拌釜式反應(yīng)器與之耦合,構(gòu)建一體式連續(xù)攪拌微生物電化學(xué)系統(tǒng)(CSMER).確定系統(tǒng)的最佳運行條件:以連續(xù)流方式運行,在水力停留時間為12 h,進水COD濃度為6 000 mg·L~(-1)時,系統(tǒng)內(nèi)4個電池的最大功率密度分別達(583±9),(562±7),(533±10)和(572±6)mW·m~(-2),COD去除率為(87.1±1.1)%,甲烷產(chǎn)率為(1.48±0.15)L·L~(-1)·d~(-1).與對照的連續(xù)攪拌釜式反應(yīng)器相比,其COD去除率及甲烷產(chǎn)率分別提高了61.6%及244.2%.焦磷酸測序結(jié)果表明,CSMER底端的全混流攪拌區(qū)(CMZ)以Clostridium(10.0%)、Acidaminococcus(11.7%)及Lactococcus(10.8%)等水解發(fā)酵菌群為優(yōu)勢細菌菌屬;頂端的微生物電化學(xué)區(qū)(MEZ)以產(chǎn)電菌Geobacter(14.5%)占優(yōu)勢.CSMER中相對復(fù)雜的細菌群落結(jié)構(gòu)使其同時含有豐度較高的嗜乙酸產(chǎn)甲烷菌科(52.2%)和嗜氫產(chǎn)甲烷菌科(47.1%),而底端CMZ的厭氧消化過程與頂端MEZ的產(chǎn)電過程之間的協(xié)同作用是實現(xiàn)該系統(tǒng)性能優(yōu)于對照反應(yīng)器的主要原因.
[Abstract]:In order to improve the performance of wastewater containing fermentative substrates, microbial electrochemical system has some disadvantages, such as the degradation of electrical performance and the poor quality of effluent in order to improve the performance of wastewater containing fermentative substrates in the process of actual wastewater treatment. The continuous stirred tank reactor was coupled to construct an integrated continuous stirred microbial electrochemical system (CSM ERA). The optimal operating conditions of the system were determined as follows: running in a continuous flow mode. When the HRT was 12 h and the influent COD concentration was 6 000 mg 路L ~ (-1), the maximum power density of the four batteries in the system was 583 鹵9). The removal rate of COD was 87.1 鹵1.1%. The methane yield was 1.48 鹵0.15 L 路L ~ (-1) 路d ~ (-1) 路d ~ (-1), which was compared with the control continuous stirred tank reactor. The removal rate of COD and methane yield were increased by 61.6% and 244.2, respectively. The bottom end of CSMER is the whole mixed mixing area (CMZ) with Clostridium 10. 0). Acidaminococcus 11. 7) and Lactococcus 10.8). The top of the microbial electrochemical region (MEZ) to produce electric bacteria Geobacter 14. 5). The relatively complex community structure of CSMER makes it contain high abundance methanophiles (52.2) and hydrophilic methanogens (47.1). The synergy between the anaerobic digestion process of the bottom CMZ and the power generation process of the top MEZ is the main reason for the performance of the system to be better than that of the control reactor.
【作者單位】： 哈爾濱工業(yè)大學(xué)市政環(huán)境工程學(xué)院;城市水資源與水環(huán)境國家重點實驗室(哈爾濱工業(yè)大學(xué));哈爾濱工業(yè)大學(xué)生命科學(xué)與技術(shù)學(xué)院;
【基金】：國家杰出青年科學(xué)基金(51125033)
【分類號】：X703
【正文快照】： 微生物電化學(xué)系統(tǒng)(microbial electrochemicalsystems,MESs)是以電化學(xué)活性細菌為催化劑將有機物中的化學(xué)能直接轉(zhuǎn)化為電能的裝置,將有機物分解代謝的同時,能夠以電能、清潔能源(氫氣)或生成有用代謝副產(chǎn)物等方式回收能量[1].MESs與其他技術(shù)相耦合衍生出多種具有不同功能的系

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1 楊發(fā)文;;城市亮化與光污染[J];物理教學(xué);2003年12期

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