眾所周知,垃圾滲濾液污染物質(zhì)濃度含量高,是一種成分復(fù)雜且難以生物降解的廢水,對環(huán)境有較大的危害。由于垃圾滲濾液的成分有賴于垃圾填埋場固體廢棄物的堆積年限和堆積方式,其中有機物、無機物和重金屬成分的變化較大且不穩(wěn)定,因此,高濃度的垃圾滲濾液是很難處理的。本課題研究的垃圾滲濾液取自中國重慶市長生橋垃圾填埋場,滲濾液中COD, BOD₅, NH₃-N平均含量分別為1650 mg/l, 5mg/l,1100mg/l。本文在查閱國內(nèi)外相關(guān)文獻的基礎(chǔ)上,結(jié)合長生橋垃圾滲濾液高氨氮、低碳的特點,考慮到氨氮和碳難以同時去除,試驗采用生物處理法和物化處理法去除氨氮和COD,即分別采用序批式生物膜反應(yīng)器SBBR和MAP沉淀法去除滲濾液中的氨氮,考察了這兩種方法的處理效果以及各自的影響因素,并對這兩種方法的處理效果進行了比較;試驗還采用混凝沉淀、Fenton氧化法、混凝沉淀-Fenton氧化組合法,以及Fenton氧化-混凝沉淀組合法對COD進行去除,考察了這四種方法的去除效果,并對其處理效能進行了比較;此外,試驗通過用序批式間歇生物膜反應(yīng)器（SBBR）處理超聲波... 

【文章來源】：重慶大學重慶市 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：134 頁

【學位級別】：博士

【文章目錄】：
摘要
ABSTRACT
1 Introduction
    1.1 General
    1.2 Objectives
    1.3 Research contents
2 Background of Changsheng Bridge Landfill
    2.1 Introduction
    2.2 Site Selection of Changsheng Bridge Landfill
    2.3 Landfill Liners
        2.3.1 Synthetic Liners
        2.3.2 Soil Liners
    2.4 Rainwater and Leachate Management
    2.5 Gas collection System
    2.6 Monitoring wells
    2.7 Equipments configuration
    2.8 Daily operational works in Changsheng bridge landfill
    2.9 Landfill Closure
        2.9.1 Final cover design
        2.9.2 Procedures for landfill closure
3 Literature Review
    3.1 Sanitary Landfills
    3.2 Solid Waste Decomposition in a Sanitary Landfill
        3.2.1 Decomposition Phases
    3.3 Landfill Leachate
        3.3.1 Leachate Composition
        3.3.2 Mechanisms of leachate formation
    3.4 Leachate Treatment
        3.4.1 Biological Treatment
        3.4.2 Biological Nitrogen Removal
        3.4.3 Physical / Chemical Treatment
4 Materials and Methods
    4.1 Materials
        4.1.1 Leachate
        4.1.2 Chemical Additives
    4.2 Experimental Procedures
        4.2.1 Ultrasound Method
        4.2.2 Coagulation - Flocculation procedure
        4.2.3 Fenton treatment procedure
        4.2.4 Coagulation-Flocculation and Fenton Process procedure
        4.2.5 Sequencing Batch Biofilm Reactor （SBBR） procedure
        4.2.6 MAP （Magnesium: Ammonium: Phosphate） Precipitating procedure
    4.3 Analytical methods
5 Study of Ammonia Removal for High-Nitrogen and Low-Carbon Landfill Leachate
    5.1 Specified materials and methods for SBBR reactor
    5.2 Factors affecting on ammonia removal in SBBR reactor
        5.2.1 Effect of alkalinity on ammonia removal in SBBR reactor
        5.2.2 Effect of Temperature on ammonia removal in SBBR reactor
        5.2.3 Effect of Packing Density on ammonia removal in SBBR reactor
        5.2.4 Effect of Loading Rate on ammonia removal in SBBR reactor
    5.3 Ammonia removal by Using SBBR reactor
    5.4 Ammonia removal by MAP precipitation and its influencing factors
        5.4.1 Effect of pH value on ammonia removal by MAP
        5.4.2 Effect of Molar ratio on ammonia removal by MAP
    5.5 Comparison between SBBR and MAP method for ammonia removal
    5.6 Brief summary
6 Research on COD removal for high-nitrogen and low-carbon landfill leachate
    6.1 Research of COD removal by Coagulation-Flocculation
        6.1.1 COD removal by Coagulation-Flocculation
    6.2 Research of COD removal by Fenton Oxidation
        6.2.1 Effect of pH value on COD removal by Use Fenton Oxidation
        6.2.2 Effect of Reaction Time on COD removal by Use Fenton Oxidation
        6.2.3 Effect of Fe2+ and H202 addition on COD removal by Use Fenton Oxidation
        6.2.4 Effect of Temperature on COD removal by Use Fenton Oxidation
    6.3 Combination of Coagulation-Flocculation and Fenton for COD removal
        6.3.1 Research of COD removal by combined Treatment of Coagulation Flocculation and Fenton
        6.3.2 Research of COD removal by combined Treatment of Fenton and Coagulation-Flocculation
    6.4 Comparison among different methods for COD and color removal
    6.5 Brief summary
7 Improvement of Biodegradability for High-Nitrogen and Low-Carbon Landfill Leachate by Use Ultrasonic Method
    7.1 Effect of Ultrasonic Method on Biodegradability for High-Nitrogen and Low Carbon Landfill Leachate
        7.1.1 Effect of Ultrasonic Time on the COD Removal
        7.1.2 Effect of power supply in Ultrasonic device on COD removal
        7.1.3 Effect of temperature on the COD removal
    7.2 Use SBBR Reactor of Leachate Pretreated by Ultrasonic Wave
    7.3 Brief Summary
8 Conclusions and Recommendations
    8.1 Conclusions
    8.2 Recommendations
ACKNOWLEDGMENTS
REFERENCES
RELATED PUBLICATIONS



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