城市生活污水和工業(yè)廢水均含有高濃度的含磷化合物，磷是導(dǎo)致水體富營養(yǎng)化和水質(zhì)惡化的重要原因，因此污水除磷是十分必要的。 出水總磷的排放標(biāo)準(zhǔn)隨地域收納水體的不同而有差異。按照中國國標(biāo)GB18918–2002B排放標(biāo)準(zhǔn)，出水總磷排放濃度必須低于1mg/L。近年來水處理技術(shù)的研究日益深入，目前，快速絮凝技術(shù)由于其低投入、低成本的優(yōu)勢應(yīng)用也日益廣泛。 因此本研究將自制的絮凝劑應(yīng)用于城市生活污水(取自湯遜湖污水處理廠)的處理，實(shí)驗(yàn)室用赤泥、鋁土礦及粉煤灰為原料制備四種不同絮凝劑，分別為改性鋁土礦絮凝劑(1#)、改性赤泥絮凝劑(2#)、改性鋁土礦與赤泥絮凝劑(3#)及改性鋁土礦與粉煤灰絮凝劑(4#)。 分析四組絮凝劑的各項(xiàng)物化性質(zhì)并與《工業(yè)聚合氯化鋁國家標(biāo)準(zhǔn)》GB/T22627-2008對比可知，1#、3#、4#絮凝劑的pH達(dá)到國家標(biāo)準(zhǔn)規(guī)定的3.5-5.0的范圍，3#絮凝劑氧化鋁含量達(dá)到標(biāo)準(zhǔn)中≥29%的規(guī)定，4#(26.83%)接近國家標(biāo)準(zhǔn)�？傮w上，自制的四種絮凝劑物化性質(zhì)均可達(dá)到相關(guān)國家標(biāo)準(zhǔn)。 對自制的絮凝劑進(jìn)行模擬廢水實(shí)驗(yàn)，得出1#絮凝劑的最適pH在6⁸之間，最佳投加量為0...

【文章頁數(shù)】：92 頁

【學(xué)位級別】：碩士

【文章目錄】：
DEDICATION
ABSTRACT
摘要
CHAPTER ONE: INTRODUCTION
    1.1 OVERVIEW
    1.2 BACKGROUND
    1.3 PROBLEM STATEMENT
    1.4 PURPOSE AND SIGNIFICANCE OF STUDY
    1.5 ANALYSIS AND CURRENT RESEARCH
CHAPTER TWO: LITERATURE REVIEW
    2.1 SOURCES OF PHOSPHORUS AND THEIR STRUCTURES
    2.2 SOURCE CONTROL OF PHOSPHORUS
    2.3 PHOSPHORUS COMPOUNDS IN AQUEOUS SOLUTION
        2.3.1 PHOSPHORUS COMPOUNDS IN WATER ENVIRONMET
        2.3.2 HYDROLYSIS OF PHOSPHORUS COMPOUNDS
    2.4 PHOSPHORUS REMOVAL PROCESS
    2.5 PHOSPHORUS REMOVAL BY CHEMICAL PRECIPITATION
    2.6 CHEMISTRY OF CHEMICAL PRECIPITATION
    2.7 PROCESS CONFIGURATION
    2.8 COAGULATION AND FLOCCULATION
CHAPTER THREE: METHODOLOGY
    3.1 MATERIALS
        3.1.1 WASTE WATER SAMPLES
        3.1.2 EQUIPMENT AND INSTRUMENTS
        3.1.3 MAIN ANALYSIS AND CHARACTERISATION EQUIPMENT
    3.2 METHODS
        3.2.1 INDEX TEST METHOD OF WASTE WATER INDICATORS
        3.2.2 PREPARATION OF INORGANIC COMPOSITE COAGULANTS
        3.2.3 PROPERTIES OF INORGANIC COMPOSITE COAGULANT
CHAPTER FOUR: EXPERIMENTAL RESULTS AND ANALYSIS
    4.1 DETERMINATION OF OPTIMUM PH CONDITIONS
    4.2 DETERMINATION OF OPTIMUM COAGULANT DOSAGE
    4.3 DETERMINATION OF OPTIMUM HYDRAULIC CONDITIONS
    4.4 SELECTION OF COAGULANTS
    4.5 COAGULANTS USED IN SEWAGE WASTE WATER TREATMENT
    4.6 Chapter Summary
CHAPTER FIVE: COAGULANT MECHANISM
    5.1 X RAY FLUORESCENCE SPECTROSCOPY
    5.2 X RAY DIFFRACTION ANALYSIS
    5.3 INFRARED SPECTROSCOPY
    5.4 SCANNING ELECTRON MICROSCOPY ANALYSIS
    5.5 MECHANISM ANALYSIS OF THE COAGULANT
        5.5.1 CHARGE NEUTRALISATION
        5.5.2 ADSORPTION BRIDGING MECHANISM
        5.5.3 ELECTROSTATIC PATCH MECHANISM
        5.5.4 VOLUME SWEEPING NETTING EFFECT
CHAPTER SIX: CONCLUSION AND RECOMMENDATION
    6.1 CONCLUSION
    6.2 RECOMMENDATION
REFERENCES
ACKNOWLEDGEMENTS



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