通過上流式厭氧污泥床(UASB)系統(tǒng)處理甘蔗廢水制氫
發(fā)布時間:2022-02-17 07:02
上流式厭氧污泥床(UASB)是一種生物反應(yīng)器裝置,可以利用有機(jī)原料和富含碳水化合物的基質(zhì)產(chǎn)生沼氣。UASB反應(yīng)器已廣泛應(yīng)用于各種底物的制氫。眾所周知,它的能源需求低,能夠產(chǎn)生富含甲烷的沼氣作為可回收能源,污泥產(chǎn)量低。它也成功地應(yīng)用于處理各種類型的廢水。UASB被稱為最健壯的高速厭氧反應(yīng)器,目前已廣泛安裝了近1000個反應(yīng)器。UASB是一種操作穩(wěn)定、過程高效的反應(yīng)堆。甘蔗廢水已被用作制氫的底物。研究的主要參數(shù)包括產(chǎn)氫量、pH值、水力停留時間(HRT)、COD和底物濃度。底物濃度設(shè)計(jì)分別為1.33gr/L、1.78gr/L、2.22gr/L、4gr/L和8gr/L。HRT設(shè)計(jì)為下降模式,分別為24小時、12小時、7小時和4小時。在79天的運(yùn)行時間內(nèi),總產(chǎn)氣量可達(dá)到8 m3。氫產(chǎn)率隨底物濃度的增加而增加。但是,本研究的產(chǎn)氫量低于其他研究。運(yùn)行期間COD去除率最低為0.78%,最高為90.25%。對UASB處理單糖、復(fù)糖和多糖進(jìn)行了比較研究。氫、二氧化碳和甲烷是主要由UASB反應(yīng)器產(chǎn)生的氣體類型,可以是單級的,也可以是兩級的。乙酸、丁酸、丙酸、異戊酸和戊酸是可溶性代謝產(chǎn)物,主要由單糖(單糖)、...
【文章來源】:東北林業(yè)大學(xué)黑龍江省211工程院校教育部直屬院校
【文章頁數(shù)】:88 頁
【學(xué)位級別】:碩士
【文章目錄】:
Acknowledgements
Dedications
摘要
Abstract
1. Introduction
1
1.1 Research Background
1.2 Hydrogen
1.2.1 Hydrogen in the transport sector
1.2.2 Hydrogen as electricity sources
1.3 Anaerobic Digestion
1.3.1 Conditions and variables influencing anaerobic digestion
1.3.2 Advantages and disadvantages of anaerobic digestion
1.4 Hydrogen production by anaerobic fermentation
1.5 Basic types of reactors used in the anaerobic process
1.6 Brief introduction of UASB
1.6.1 Up-flow anaerobic sludge blanket
1.6.2 UASB reactor size and shape
1.6.3 The working principle of UASB
1.6.4 Advantages and disadvantages of using UASB reactor for wastewater tretament
1.6.5 Parameters influencing the effieciency of UASB reactors
1.7 Sugarcane
1.7.1 Manufacturing process
1.7.2 Derivation of sugarcane wastewater
1.7.3 The characteristic of sugarcane wastewater and its effect on the environment
1.8 Current research and trend development
1.8.1 Current research situation in China
1.8.2 Current research situation in foreign countries
1.9 Purpose of the study
2 Research questions
3 Summary of this chapter
2. Materials and method
2.1 Experimental device
2.2 Preparation of sludge inoculation
2.3 Experimental substrate
2.4 Parameter measurement
2.4.1 Gas yields
2.4.2 pH of influent and effluent
2.4.3 Determination of COD
2.4.4 Data analysis
2.4.5 Soluble metabolic products and hydrogen content
2.5 Technology roadmap
2.6 Summary of this chapter
3. Results and discussion
3.1 Gas production generated during operation time
3.2 Changes in pH
3.3 Changes in substrate concentration
3.4 Changes in COD
3.5 Effects of the change substrate concentration to pH
3.5.1 Substrate concentration corresponding to different pH
3.5.2 Substrate concentrations corresponding to COD
3.6 Soluble metabolic products (Volatile Fatty Acids) in various studies
3.6.1 Soluble metabolic products generated in some studies
3.7 Hydrogen production and content in some studies
3.8 Summary of this chapter
Conclusion
References
Paper published in the period of master education
致謝
個人簡歷
本文編號:3629006
【文章來源】:東北林業(yè)大學(xué)黑龍江省211工程院校教育部直屬院校
【文章頁數(shù)】:88 頁
【學(xué)位級別】:碩士
【文章目錄】:
Acknowledgements
Dedications
摘要
Abstract
1. Introduction
1
1.1 Research Background
1.2 Hydrogen
1.2.1 Hydrogen in the transport sector
1.2.2 Hydrogen as electricity sources
1.3 Anaerobic Digestion
1.3.1 Conditions and variables influencing anaerobic digestion
1.3.2 Advantages and disadvantages of anaerobic digestion
1.4 Hydrogen production by anaerobic fermentation
1.5 Basic types of reactors used in the anaerobic process
1.6 Brief introduction of UASB
1.6.1 Up-flow anaerobic sludge blanket
1.6.2 UASB reactor size and shape
1.6.3 The working principle of UASB
1.6.4 Advantages and disadvantages of using UASB reactor for wastewater tretament
1.6.5 Parameters influencing the effieciency of UASB reactors
1.7 Sugarcane
1.7.1 Manufacturing process
1.7.2 Derivation of sugarcane wastewater
1.7.3 The characteristic of sugarcane wastewater and its effect on the environment
1.8 Current research and trend development
1.8.1 Current research situation in China
1.8.2 Current research situation in foreign countries
1.9 Purpose of the study
2 Research questions
3 Summary of this chapter
2. Materials and method
2.1 Experimental device
2.2 Preparation of sludge inoculation
2.3 Experimental substrate
2.4 Parameter measurement
2.4.1 Gas yields
2.4.2 pH of influent and effluent
2.4.3 Determination of COD
2.4.4 Data analysis
2.4.5 Soluble metabolic products and hydrogen content
2.5 Technology roadmap
2.6 Summary of this chapter
3. Results and discussion
3.1 Gas production generated during operation time
3.2 Changes in pH
3.3 Changes in substrate concentration
3.4 Changes in COD
3.5 Effects of the change substrate concentration to pH
3.5.1 Substrate concentration corresponding to different pH
3.5.2 Substrate concentrations corresponding to COD
3.6 Soluble metabolic products (Volatile Fatty Acids) in various studies
3.6.1 Soluble metabolic products generated in some studies
3.7 Hydrogen production and content in some studies
3.8 Summary of this chapter
Conclusion
References
Paper published in the period of master education
致謝
個人簡歷
本文編號:3629006
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