城市污水處理基礎(chǔ)設(shè)施的高投入,城市污水廠的高運(yùn)行費(fèi)用,管網(wǎng)滲漏造成的二次污染,以及水資源缺乏地區(qū)對污水回用的需求,迫切需要運(yùn)行穩(wěn)定,低能耗污水處理工藝。本研究將SBR工藝與人工濕地工藝進(jìn)行組合,用于處理生活污水,以得到該組合工藝處理生活污水的最佳工況條件與最優(yōu)的經(jīng)濟(jì)運(yùn)行參數(shù),要求充分發(fā)揮人工濕地的處理效能,以降低SBR系統(tǒng)的能耗。 在該組合工藝中,人工濕地是自然處理工藝,人工濕地中間設(shè)置自然復(fù)氧槽可提高濕地內(nèi)部的溶解氧,為無能耗工藝。SBR系統(tǒng)是活性污泥工藝,須通過供氧來培養(yǎng)活性污泥和保持一定的活性污泥濃度。SBR系統(tǒng)的曝氣強(qiáng)度和曝氣時(shí)間是影響該組合工藝的能耗參數(shù)。 常溫下(氣溫≥15℃),活性污泥中微生物生長迅速,SBR中污泥濃度高,對有機(jī)污染物的去除效果好。為降低能耗,不斷降低SBR的曝氣時(shí)間,選用運(yùn)行方式1、2、3,4作為運(yùn)行工況,曝氣時(shí)間從5h降低到2h。同時(shí)采用限制曝氣,將SBR系統(tǒng)控制在低溶解氧狀態(tài)。出水要求達(dá)到《景觀用水標(biāo)準(zhǔn)》(GB/T18921-2002)。 低溫下(氣溫<15℃), SBR中活性污泥受到氣溫變化的影響,活性污泥中微生物活性降低,污泥濃度下降,加之...

【文章頁數(shù)】：191 頁

【學(xué)位級別】：博士

【文章目錄】：
中文摘要
英文摘要
CHAPTER ONE INTRODUCTION
    1.1 General Introduction
    1.2 Wastewater reuse
        1.2.1 Need for Wastewater Reuse
        1.2.2 Category of Wastewater Reuse
    1.3 Wastewater Treatment and Reuse in China
    1.4 Objective of Present Study
CHAPTER TWO BACKGROUND & LITERATURE REVIEW
    2.1 Introduction
    2.2 Utilization of SBR Technology for Wastewater Treatment
        2.2.1 Municipal Wastewaters
        2.2.2 Reject Water from Wastewater Treatment Plants (WWTPs)
        2.2.3 Winery and Brewery Wastewaters
        2.2.4 Landfill Leachates
        2.2.5 Tannery Wastewaters
        2.2.6 Hypersaline Wastewaters
        2.2.7 Wastewaters from Paper Industry
        2.2.8 Food Industry and Dairy Wastewaters
        2.2.9 Slaughterhouse Wastewaters
        2.2.10 Piggery Wastewaters
        2.2.11 SBBR: SBR with Biofilm
    2.3 Utilization of Wetland Technology for Wastewater Treatment
        2.3.1 Application of Constructed Wetlands
CHAPTER THREE MECHANISMS OF TREATMENT IN SEQUENCING BATCH REACTORS AND CONSTRUCTED WETLANDS
    3.1 Introduction
    3.2 Nutrient problems
    3.3 Biological Nutrient Removal
        3.3.1 Biological Nitrogen Removal
        3.3.2 Biological Phosphorus Removal
    3.4 Sequencing Batch Reactors (SBR)
        3.4.1 Operating Characteristics in SBR Process
    3.5 Constructed Wetland for water pollution control
        3.5.1 Water purification
        3.5.2 Ecological functions
        3.5.3 Constructed Wetlands (CWs)
        3.5.4 Macrophytes
        3.5.5 Treatment Wetland Advantages / Disadvantages
CHAPTER FOUR REACTORS & EXPERIEMENT DESIGN
    4.1 Sequencing Batch Reactors (SBR)
        4.1.1 Description of SBR equipment
    4.2 Constructed Wetland (CW)
        4.2.1 Description of Constructed Wetland
        4.2.2 Selection of the filter media
        4.2.3 Plantation of the Constructed Wetland Cells
    4.3 Experimental Design
        4.3.1 Characteristics of Influent Wastewater
        4.3.2 Experimental Combined Process
        4.3.3 Test Equipment and Analytical Methods
CHAPTER FIVE EXPERIEMENTAL PROCESS
    5.1 Start-up
        5.1.1 SBR start-up
        5.1.2 Constructed Wetland start-up
    5.2 SBR aeration
        5.2.1 Examination of COD removal under different aeration flux
        5.2.2 Examination of ammonia oxidation under different aeration flux
        5.2.3 Variation of DO
    5.3 Experiment Process
CHAPTER SIX RUSELTS & DISCUSSION
    6.1 Performance of Combined Processes under Normal Temperature
        6.1.1 COD Removal at Normal Temperature
        6.1.2 Ammonia Removal at Normal Temperature
        6.1.3 Total Nitrogen (TN) Removal at Normal Temperature
        6.1.4 Total Phosphorus (TP) Removal at Normal Temperature
        6.1.5 Best Operation Cyclic Mode under Normal Temperature
    6.2 Performance of Combined Processes under Low Temperature
        6.2.1 COD Removal at Low Temperature
        6.2.2 Ammonia Removal at Low Temperature
        6.2.3 Total Nitrogen &Total Phosphorus Removals at Low Temperature
        6.2.4 Best Operation Cyclic Mode under Low Temperature
CHAPTER SEVEN CONCLUSIONS
ACKNOWLEDGMENT
REFERENCES
LIST OF PUBLICATIONS



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