本文選題：竹制品廢水 + 竹炭��； 參考：《浙江大學(xué)》2017年碩士論文

【摘要】：近年來,我國竹制品行業(yè)蓬勃發(fā)展,其加工過程產(chǎn)生的大量竹制品廢水具有COD濃度與色度高、污染組成復(fù)雜等特點(diǎn),為此研發(fā)穩(wěn)定高效適用的竹制品廢水處理工藝技術(shù)意義重大。厭氧膜生物反應(yīng)器(AnMBR)具有高效降解有機(jī)物、能源回收利用等特點(diǎn),逐漸應(yīng)用于高濃度有機(jī)廢水處理領(lǐng)域,但其穩(wěn)定性較差、膜污染嚴(yán)重等問題制約其工業(yè)化應(yīng)用。論文以高濃度竹制品廢水為處理對象,研發(fā)高效穩(wěn)定的AnMBR強(qiáng)化工藝,應(yīng)用X-射線能譜分析(SEM-EDX)、三維熒光光譜(3D-EEM)、共聚焦顯微鏡(CLSM)、高通量測序等技術(shù)手段,開展投加竹炭顆粒強(qiáng)化AnMBR工藝性能、堿度對AnMBR工藝的影響、厭氧膜污染特性及竹炭減緩膜污染機(jī)制、厭氧顆粒與膜垢微生物菌群結(jié)構(gòu)解析等研究,取得如下研究成果:1、以AnMBR為研究平臺,竹制品廢水為處理對象,研究投加竹炭顆粒對AnMBR工藝污染物去除、污泥顆�；�、產(chǎn)氣量及氣體組成等的影響發(fā)現(xiàn),投加竹炭顆粒的B-AnMBR反應(yīng)器污染物去除性能顯著提升,COD、氨氮去除率分別達(dá)94.5±2.9%、75.7±2.1%,平均污泥濃度增至25.3 g/L,厭氧污泥顆�；潭鹊玫教岣�。研究還發(fā)現(xiàn),處理高濃度竹制品廢水過程兩組AnMBR反應(yīng)器均未發(fā)生酸化,相比而言B-AnMBR反應(yīng)器的ORP與出水VFA值更低,系統(tǒng)運(yùn)行性能與產(chǎn)氣能力更為穩(wěn)定,其產(chǎn)氣量、甲烷產(chǎn)率分別高達(dá)13.2±1.2 L/d、0.25 LCH4/g COD。2、研究不同進(jìn)水堿度對AnMBR工藝pH、COD去除率、產(chǎn)甲烷能力等影響發(fā)現(xiàn),進(jìn)水堿度由4328 mg/L降至549 mg/L時,兩組AnMBR反應(yīng)器的出水pH仍保持在7.5以上,系統(tǒng)運(yùn)行性能良好。與對照組相比,B-AnMBR的COD去除率穩(wěn)定在89.2%,產(chǎn)氣量、甲烷產(chǎn)率略有增加,分別達(dá)14.03 L/d、0.32 LCH4/g COD。推測投加竹炭顆粒后AnMBR工藝每消耗1gCOD產(chǎn)生0.19-0.27 g堿度,高于對照組的0.18-0.24 g,有效提升AnMBR工藝性能與穩(wěn)定性。3、研究竹炭投加對AnMBR工藝膜組件性能的影響發(fā)現(xiàn),B-AnMBR運(yùn)行期間膜通量顯著高于AnMBR(p0.05),至反應(yīng)器停止運(yùn)行時B-AnMBR膜阻為8.41×1012m-1,低于AnMBR的5.23×1012m-1(p0.01),膜清洗后B-AnMBR膜通量恢復(fù)較好、使用壽命延長。應(yīng)用SEM-EDX、CLSM等技術(shù)分析膜表面結(jié)構(gòu)發(fā)現(xiàn),投加竹炭顆粒的B-AnMBR體系中溶解性微生物產(chǎn)物(SMP)含量降低,形成的膜垢松散、多孔,易引起膜污染的Ca、Al、Si、Fe等金屬元素以及蛋白、多糖含量明顯下降,表明竹炭的投加可有效減緩膜孔堵塞、增加膜通量。4、應(yīng)用高通量測序等分子生物學(xué)手段分析AnMBR反應(yīng)器污泥與膜垢微生物菌群結(jié)構(gòu)演變發(fā)現(xiàn),投加竹炭后厭氧生物反應(yīng)器的污泥微生物菌群多樣性得到提高,Methanosaeta、Methanospirillum、Methanobacterium等產(chǎn)甲烷菌群得到富集。分析膜垢菌群結(jié)構(gòu)發(fā)現(xiàn),竹炭的投加抑制了Bacteroidetes、OP11等產(chǎn)EPS菌在膜表面的富集。綜合分析認(rèn)為,竹炭顆粒通過吸附、成核等途徑增強(qiáng)污染物去除與污泥顆�；�,進(jìn)而優(yōu)化污泥菌群結(jié)構(gòu)、降低反應(yīng)體系SMP含量,有效改善膜垢優(yōu)勢菌群與表面結(jié)構(gòu),最終實(shí)現(xiàn)AnMBR工藝性能提升與膜污染有效控制。
[Abstract]:In recent years, the bamboo products industry in China has developed vigorously. A large number of bamboo products produced in the process of processing have the characteristics of high concentration of COD, high chromaticity and complicated pollution composition. Therefore, it is of great significance to develop a stable and effective treatment technology for bamboo waste water treatment. The anaerobic membrane bioreactor (AnMBR) has high efficiency in degradation of organic matter and energy recovery. It is gradually applied to the field of high concentration organic wastewater treatment, but its stability is poor, membrane pollution is serious and other problems restrict its industrial application. The paper takes high concentration bamboo waste water as the treatment object, develops a highly efficient and stable AnMBR strengthening process, uses X- ray spectrum analysis (SEM-EDX), three-dimensional fluorescence spectroscopy (3D-EEM), confocal microscopy CLSM, high throughput sequencing and other technical means, the effects of adding bamboo charcoal particles to strengthen the AnMBR process, the influence of alkalinity on the AnMBR process, the characteristics of the anaerobic membrane pollution and the mechanism of bamboo charcoal to slow the membrane fouling, the analysis of the structure of the anaerobic particles and the membrane fouling microorganism, and so on, have been obtained as the following research achievements: 1, the research platform of AnMBR is the research platform of the bamboo products, and the waste water of bamboo products is The effects of bamboo charcoal particles on the removal of pollutants in AnMBR process, sludge granulation, gas production and gas composition have been studied. The removal performance of pollutants in the B-AnMBR reactor added with bamboo charcoal particles was significantly improved, COD, the removal rate of ammonia nitrogen was 94.5 + 2.9%, 75.7 + 2.1%, and the average sludge concentration increased to 25.3 g/L, and the anaerobic sludge particles were increased. The study also found that the two groups of AnMBR reactors in the process of treating high concentration bamboo waste water were not acidified. Compared to the B-AnMBR reactor's ORP and the effluent VFA value, the system operating performance and gas production capacity were more stable, and the gas production and methane yield were as high as 13.2 + 1.2 L/d and 0.25 LCH4/g COD.2. The effect of water alkalinity on the pH, COD removal rate and methane production capacity of AnMBR process showed that when the alkalinity of the influent was reduced from 4328 mg/L to 549 mg/L, the effluent pH of the two groups of AnMBR reactors remained above 7.5 and the system operating performance was good. Compared with the control group, the COD removal rate of B-AnMBR was 89.2%, gas production and methane yield increased slightly, up to 14.03 L/d, respectively. 0.32 LCH4/g COD. speculated that after the addition of bamboo charcoal particles, the AnMBR process produced 0.19-0.27 g alkalinity per 1gCOD, higher than the 0.18-0.24 g of the control group, effectively improving the AnMBR process performance and stability.3. The effect of the addition of bamboo charcoal on the performance of the AnMBR process membrane module was found to be significantly higher than that of the reactor during the operation. At the time of operation, the B-AnMBR film resistance is 8.41 x 1012m-1, lower than 5.23 x 1012m-1 (P0.01) of AnMBR. After the membrane cleaning, the flux of B-AnMBR membrane is better and the service life is prolonged. The application of SEM-EDX, CLSM and other techniques to analyze the surface structure of the membrane found that the content of the dissolved microbiological products (SMP) in the B-AnMBR system of bamboo charcoal particles is reduced, and the film scale is loose and porous. The content of Ca, Al, Si, Fe and other metal elements and proteins, which can easily cause membrane fouling, decreased obviously. It showed that the addition of bamboo charcoal could effectively slow the blockage of membrane pore and increase the membrane flux.4. The structural evolution of AnMBR reactor sludge and membrane fouling microorganism group was analyzed by high throughput sequencing, and the anaerobic biological reaction after adding bamboo charcoal was found. The diversity of microbial flora of the sludge was enhanced, and methanogenic bacteria groups such as Methanosaeta, Methanospirillum and Methanobacterium were enriched. Analysis of the structure of membrane fouling bacteria found that the addition of bamboo charcoal inhibited the enrichment of Bacteroidetes, OP11 and other EPS producing bacteria on the surface of the membrane. The removal of strong pollutants and the granulation of sludge, then optimize the structure of the sludge flora, reduce the SMP content of the reaction system, effectively improve the bacteria group and the surface structure of the membrane fouling, and finally achieve the improvement of the performance of the AnMBR process and the effective control of the membrane fouling.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X798

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 李允超;王賢華;楊海平;譚增強(qiáng);李攀;陳漢平;;竹炭表面結(jié)構(gòu)及其對糠醛的吸附特性[J];農(nóng)業(yè)工程學(xué)報;2012年12期

2 俞言文;朱亮;戚韓英;徐向陽;田志娟;;廢水處理系統(tǒng)中生物聚集體胞外多聚物研究進(jìn)展[J];應(yīng)用與環(huán)境生物學(xué)報;2012年02期

3 王冰;韓洪軍;劉碩;馬文成;;顆�；钚蕴考铀賲捬醴磻�(yīng)器污泥顆�；难芯縖J];中國給水排水;2011年11期

4 李松;單勝道;陳斌;曾林慧;潘杰;;氣浮+A/O工藝處理竹原纖維加工廢水[J];環(huán)境工程;2008年06期

5 葉茂盛;張捍民;楊鳳林;崔霞;;動態(tài)膜-生物反應(yīng)器中新型預(yù)涂劑的抗污染特性研究[J];環(huán)境科學(xué);2007年11期

6 馬承愚;姜安璽;彭英利;李芬;;超臨界水氧化法處理竹子溶解漿生產(chǎn)廢水的實(shí)驗(yàn)研究[J];環(huán)境保護(hù)科學(xué);2006年06期

7 吳志超,王志偉,顧國維,俞國平;厭氧膜生物反應(yīng)器污泥組分對膜污染的影響[J];中國環(huán)境科學(xué);2005年02期

8 韓劍宏,倪文,江翰;投加硬硅鈣纖維粒對UASB低溫運(yùn)行的影響[J];中國給水排水;2003年10期

，

本文編號：1830935