在厭氧消化過程中,氨氮是最主要的氮源,對(duì)微生物的生長(zhǎng)有重要作用。但是,高濃度的氨氮會(huì)對(duì)能量轉(zhuǎn)換效率和運(yùn)行穩(wěn)定性有抑制作用。本論文意在更好地理解高氨氮濃度下添加礦石和載體對(duì)厭氧消化過程的影響,為緩解高氨氮抑制問題尋找合理的解決途徑。本文首先篩選出對(duì)厭氧消化產(chǎn)甲烷過程有促進(jìn)效果的礦物和載體。而后對(duì)添加礦物和載體的反應(yīng)器進(jìn)行長(zhǎng)期運(yùn)行的評(píng)價(jià)。最后,闡明了添加礦物和載體對(duì)微生物群落的影響。（1）采用磁鐵礦、褐錳礦、活性炭、熱解碳、沸石、載體進(jìn)行間歇實(shí)驗(yàn)。同時(shí)添加磁鐵礦和載體的反應(yīng)器內(nèi),甲烷產(chǎn)量最高,約為373.24 mL CH4/g Glu,同時(shí)遲滯期時(shí)間較短,少于1天（0.77天）,而且產(chǎn)甲烷速率較快,λ=78.26 mL CH4/葡萄糖/d。在加入載體的反應(yīng)器（約46.21 mg/L）以及同時(shí)加入磁鐵礦和載體的反應(yīng)器（約65.8 mg/L）中,均出現(xiàn)揮發(fā)性脂肪酸的積累。總氨濃度的結(jié)果表明,不同礦物和載體對(duì)氨氮的吸收量有一定的閾值。在添加了磁鐵礦或褐錳礦的反應(yīng)器中,可溶性鐵沒有顯著差異,說(shuō)明可溶性鐵不是影響反應(yīng)器性能的關(guān)鍵因素。同時(shí)加入磁鐵礦和載體的反應(yīng)器中,以乙酸鹽、甲酸鹽和H2/CO2為底... 

【文章來(lái)源】：北京化工大學(xué)北京市 211工程院校 教育部直屬院校

【文章頁(yè)數(shù)】：105 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
學(xué)位論文數(shù)據(jù)集
ABSTRACT
摘要
List of Abbreviations
Chapter 1: Introduction
    1.1 Energy shortage and Chemical waste/wastewater treatment status
        1.1.1 Energy shortage
        1.1.2 Chemical wastewater/wastes
        1.1.3 Strategies to deal with wastes
    1.2 Anaerobic digestion
        1.2.1 Hydrolysis
        1.2.2 Acidogenesis
        1.2.3 Acetogenesis
        1.2.4 Methanogenesis
    1.3 Parameters affecting the anaerobic digestion
        1.3.1 pH value
        1.3.2 Temperature
        1.3.3 Salt concentration
        1.3.4 Organic loading
    1.4 Ammonia inhibition in anaerobic digestion
        1.4.1 Identification of ammonia equilibria and free ammonia concentration
        1.4.2 Mechanism of ammonia inhibition to methanogenesis
        1.4.3 Strategies to alleviate ammonia inhibition during anaerobic digestionprocess
    1.5 Research objective and significance
    1.6 Research content and route
Chapter 2: Experimental setup
    2.1 Experimental materials
    2.2 Experimental design and procedure
    2.3 Analytical methods
        2.3.1 Biogas compositions
        2.3.2 Volatile fatty acids analysis
        2.3.3 pH value
        2.3.4 Total ammonia nitrogen test
        2.3.5 Chemical oxygen demand analysis
        2.3.6 Fe soluble
        2.3.7 Carbohydrate concentration
        2.3.8 Specific methanogenic activity test
        2.3.9 Microbial community analysis
    2.4 Data analysis
Chapter 3. Mineral and carrier selection and process evaluation in anaerobic digestionprocess
    3.1 Introduction
    3.2 Batch experimental procedures
    3.3 Results and discussion
        3.3.1 Cumulative methane production
        3.3.2 Volatile fatty acids concentration
        3.3.3 Soluble Fe
        3.3.4 Total ammonia nitrogen concentration
        3.3.5 Specific methanogenic activity
    3.4 Chapter summary
Chapter 4. Long-term evaluation and microbial community of media and carriersaddition to alleviate ammonia inhibition
    4.1 Introduction
    4.2 Anaerobic fed-batch experimental procedures
    4.3 Results and discussion
        4.3.1 Methane production
        4.3.2 Volatile fatty acids concentration
        4.3.3 pH value
        4.3.4 Chemical oxygen demand removal efficiently
        4.3.5 Carbohydrate degradation
        4.3.6 Specific methanogenic activity
        4.3.7 2-bromoethanesulfonate addition
        4.3.8 Microbial community
            4.3.8.1 Archaea community
            4.3.8.2 Bacterial community
    4.4 Chapter summary
Conclusion
Innovations
References
Acknowledgements
List of publications
Introduction of the Author and Supervisor
附件



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