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南湖截污工程對(duì)湖區(qū)水質(zhì)改善的研究

發(fā)布時(shí)間:2020-09-27 13:13
   隨著中國(guó)社會(huì)與經(jīng)濟(jì)的不斷發(fā)展,城市污水排放量迅速增加,大量城市污水直接排入湖泊水體,使其受到嚴(yán)重污染。南湖是一個(gè)較大的封閉性內(nèi)陸湖泊,由于污水的長(zhǎng)期排入,湖泊的水體自凈功能已基本喪失。為了改善南湖水體的水質(zhì)狀況,有必要對(duì)南湖周邊排污口現(xiàn)狀及水體中水質(zhì)變化規(guī)律進(jìn)行深入研究。 南湖周邊排污口的調(diào)查結(jié)果表明,目前南湖共有43個(gè)排污口,每天向南湖中排放的污水量約有16.4萬(wàn)噸,其中排入小南湖中的污水約有15萬(wàn)噸/天,直接排入大南湖中的污水約有1.4萬(wàn)噸/天。南湖周邊的大多數(shù)排污口排放污水的水質(zhì)特性與武漢市城市污水的水質(zhì)特性相似,有機(jī)物濃度很低。其CODCr、TN、TP濃度均較高,對(duì)南湖的水體造成嚴(yán)重污染。南湖周邊排污口排放的污水是南湖污染的一個(gè)主要來(lái)源。 本研究的第一部分是對(duì)南湖目前水體水質(zhì)的污染狀況、南湖周邊排污口的排污狀況、排污流量、排污的水質(zhì)進(jìn)行調(diào)查和監(jiān)測(cè)。得到通過排污口向南湖排放的污水量及污染物負(fù)荷,對(duì)南湖的點(diǎn)源污染進(jìn)行定量分析,為南湖的截污及截污后的綜合治理提供前期研究。分析污染物在排污口的自凈規(guī)律,建立排污口附近水域的水質(zhì)模型,模擬計(jì)算排污口附近水域污染物濃度場(chǎng)分布,為分析整個(gè)南湖的污染物濃度變化規(guī)律提供理論基礎(chǔ)。龍王咀污水廠排污口是南湖排污量較大的排污口,每天超過15萬(wàn)噸。將污水中的污染物分為可沉降污染物與不可沉降污染物兩部分,其中可沉降污染物在水體中的自凈主要依靠沉淀,不可沉降污染物在水體中的自凈主要依靠平流擴(kuò)散稀釋和紊流擴(kuò)散稀釋,可沉降污染物與不可沉降污染物進(jìn)入湖泊水體中,最后與湖泊水體完全混合。由排污口附近水域的水質(zhì)監(jiān)測(cè)數(shù)據(jù)可推求得到CODCr、TN、TP綜合自凈系數(shù)分別為:362.88d-1、362.88d-1、152.91d-1。 本研究的第二部分關(guān)注南湖截污工程對(duì)湖區(qū)水質(zhì)改善,主要考慮不同污染源對(duì)南湖水質(zhì)的影響。在南湖周圍已經(jīng)建立了污水收集系統(tǒng),同時(shí)還建立了龍王嘴污水處理廠和榮軍泵站。這些都對(duì)南湖周圍排污口的截污狀況提供了良好的基礎(chǔ)。 為了解截污對(duì)南湖水體水質(zhì)的改善情況,對(duì)南湖的自凈容量現(xiàn)狀進(jìn)行分析是十分必要的。要實(shí)現(xiàn)對(duì)水體自凈容量的準(zhǔn)確分析,首先要建立污染物與水體之間的相互關(guān)系模型,在此模型基礎(chǔ)上分析污染物在水體中的遷移轉(zhuǎn)化規(guī)律。根據(jù)對(duì)南湖水體和周邊環(huán)境的調(diào)查,建立了南湖水體污染物遷移轉(zhuǎn)化模型。 根據(jù)南湖水體污染物遷移轉(zhuǎn)化模型,將污染物在南湖水體中的遷移轉(zhuǎn)化分為點(diǎn)源(排污口)、面源(大氣降雨、降塵)、內(nèi)源(底泥釋放)、漁業(yè)養(yǎng)殖、調(diào)蓄和水體自凈等六個(gè)方面。南湖水體中的K'C,K;N和K'P自凈系數(shù)分別為0.0245d-1,0.0132d-1,0.0754d-1 然而,隨著南湖周邊地區(qū)經(jīng)濟(jì)的飛速發(fā)展,該區(qū)域的排水現(xiàn)狀和南湖本身都不斷發(fā)生變化,整個(gè)南湖地區(qū)的排水規(guī)劃也在進(jìn)行相應(yīng)的調(diào)整。因此,南湖的截污工作迫切需要根據(jù)實(shí)際情況進(jìn)行調(diào)整和完善。
【學(xué)位單位】:武漢理工大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位年份】:2010
【中圖分類】:X52
【文章目錄】:
ABSTRACT
論文摘要
LIST OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
CHAPTER 1:INTRODUCTION
    1.1 THE GENERAL SITUATION OF LAKES IN WUHAN
    1.2 THE GENERAL SITUATION AND CURRENT SITUATION OFPOLLUTION IN SOUTH LAKE
        1.2.1 The general situation of south lake
        1.2.2 The current situation of pollution in South Lake
        1.2.3 The morphological analysis of South Lake pollution
    1.3 WATER QUALITY MODELING
        1.3.1 The theoretical basis of water quality modeling
            1.3.1.1 The effect of physical purification
            1.3.1.2 The purification of biochemistry
        1.3.2 The selection of parameter in water quality model
        1.3.3 The application of water quality model
        1.3.4 Existing problems
    1.4 THE OBJECTIVES AND THE MAJOR CONTENT OF RESEARCH
        1.4.1 The object of research
        1.4.2 The main content of research
CHAPTER 2:REVIEW OF LITERATURE
    2.1 GENERAL
    2.2 THE CURRENT RESEARCHING SITUATION IN CHINA ANDABROAD
        2.2.1 The general survey of research abroad
        2.2.2 Research in china and abroad
CHAPTER 3:THE RESEARCH ON WATER QUALITY OF WATER AREAAROUND DRAIN OUTLETS OF LONGWANGZUI WASTEWATERTREATMENT PLANT
    3.0 INTRODUCTION OF LONGWANGZUI WASTEWATER TREATMENTPLANT
    3.1 THE PHYSICAL FORMS ANALYSIS OF THE POLLUTANTS IN THETREATED WATER
        3.1.1 The analysis purpose of the physical forms distribution characteristics
        3.1.2 Measurement methods
        3.1.3 Result and discussion
            3.1.3.1 Result and discussion of the three states analysis
            3.1.3.2 The result and analysis of the still sediment experiment
Cr,TN,TP'>            3.1.3.3 The equation analysis of the still sediment experiment curve of CODCr,TN,TP
    3.2 MONITORING OF WATER QUALITY OF THE WATER AREA NEAROUTLET OF LONGWANGZUI WWTP
        3.2.1 The Purpose of monitoring
        3.2.2 The monitoring parametres and methods
        3.2.3 The selection of sites
        3.2.4 The results and obeservations
    3.3 THE WATER QUALITY MODEL OF WATER AREA NEAR THELONGWANGZUI WASTEWATER TREATMENT PLANT OUTLETS
        3.3.1 The assumed conditions of building model
        3.3.2 The determination of parameters in water quality model
            3.3.2.1 Mixed pollution zone and its formulation mechanism
            3.3.2.2 The determination of parameters in the range of pollution zone
        3.3.3 The equation composition of water quality model
            3.3.3.1 The equation of diluting model
            3.3.3.2 The sedimentation equation of water quality model
            3.3.3.3 The determination of mixed equation of water quality model
            3.3.3.4 The determination of degradable equation of water quality model
        3.3.4 The establishment of the water quality model equation
            3.3.4.1 The conditions of the pollutant discharging outlet
            3.3.4.2 The self-purification model of the non-sedimentable materials
            3.3.4.3 The establishment of the model equation of sediment
            3.3.4.4 The establishment of the mixed model equation
        3.3.5 The identification of the parameter of the model water quality equation
        3.3.6 The simulation of the water quality model equation
            3.3.6.1 Diluted and mixed model equation
            3.3.6.2 The solution of the diluted and mixed model equation
    3.4 CONCLUSIONS
CHAPTER 4:THE RECENT SITUATION OF THE POLLUTION SOURCESOF SOUTH LAKE
    4.1 THE RECENT SITUATION OF THE POINT SOURCE POLLUTIONSAROUND THE SOUTH LAKE
        4.1.1 The quantity investigations of the discharging outlet
        4.1.2 The water quality monitoring of the pollutant discharging points
    4.2 THE RECENT SITUATION OF THE INNER SOURCE POLLUTIONS OFTHE SOUTH LAKE
        4.2.1 The release mode of the pollutants in the sediments
        4.2.2 The research on the release law of the bottom mud near the dischargingoutlets of the point sources
            4.2.2.1 Testing program
            4.2.2.2 The result analysis
            4.2.2.3 The deduce of the bottom mud release model
            4.2.2.4 Determination of the migration velocity constant K
        4.2.3 The changing law of the pollutant index of bottom mud in the SouthLake
            4.2.3.1 Experiment program
            4.2.3.2 The pollutant index determination in the bottom mud
    4.3 THE CALCULATION OF POLLUTANT AMOUNT ENTERING THELAKE FROM THE NEARBY POINT SOURCES
        4.3.1 The calculation of the pollutant amount entering the lake from the pointsources recently
            4.3.1.1 The calculation of COD amount entering the lake
            4.3.1.2 The calculation of TN amount entering the lake
            4.3.1.3 The calculation of TP amount entering the lake
        4.3.2 The calculation of the pollutant amount entering the lake from the pointsources in a long term(After the interception of sewage improvement)
            4.3.2.1 The calculation of COD amount entering the lake
            4.3.2.2 The calculation of TN amount entering the lake
            4.3.2.3 The calculation of TP amount entering the lake
        4.3.3 The statistic of the pollutants amount entering the lake from the pointsources in the short and long term
    4.4 THE CALCULATION OF THE POLLUTANTS AMOUNT ENTERINGTHE LAKE FROM THE NEARBY AREA SOURCES
        4.4.1 The pollutant load of surface runoff in the South Lake
            4.4.1.1 The range of the South Lake watercollecting area
            4.4.1.2 The analysis of the rainfall characteristics
            4.4.1.3 The calculation of the surface runoff amount
            4.4.1.4 The evaluation of the pollutant amount of the surface runoff entering thelake
        4.4.2 The pollutant load entering the lake from the rainfall
        4.4.3 The calculation of the water amount entering the lake from the areasources
        4.4.4 The confirm of the total amount and concentration of the area sourcepollutants
    4.5 THE CALCULATION OF THE INNER SOURCE POLLUTANTRELEASE AMOUNT
        4.5.1 The confirmation of the point source silt area
            4.5.1.1 Longwangzui Sewage Plant outlet siltation area
            4.5.1.2 The silt area calculation of the pollutant discharging outlets in the big andsmall South Lake
        4.5.2 The confirm of the annual release amount
    4.6 THE REDUCTION CALCULATION ABOUT THE SOUTH LAKEPOLLUTANTS CAUSED BY FISHERY
    4.7 THE REDUCTION CALCULATION ABOUT THE SOUTH LAKEPOLLUTANTS CAUSED BY REGULATING AND STORING
        4.7.1 The confirmation of the regulating and storing water amount
        4.7.2 The pollutant amount reduction caused by regulating and storing
CHAPTER 5:THE PRESENT SITUATION ANALYSIS OF THE SOUTHLAKE SELF-PURIFICATION CAPACITY
    5.1 THE TEST RESEARCH ON THE SELF-PURIFICATION ABILITY OFTHE SOUTH LAKE
        5.1.1 The basic principles of water body self-purification
            5.1.1.1 The process of physical purification
            5.1.1.2 The process of chemical purification
            5.1.1.3 The process of biological purification
        5.1.2 The self-purification experiment of lake water
            5.1.2.1 Experiment program
            5.1.2.2 The result analysis
            5.1.2.3 The self-purification model deduction of the South Lake
    5.2 THE PRESENT SITUATION ANALYSIS OF SELF-PURIFICATIONCONTENTS IN THE SOUTH LAKE
        5.2.1 Point source pollutants amount
        5.2.2 The area source pollutant amount
        5.2.3 The inner source pollutant amount
        5.2.4 The pollutant amount reduction caused by fishery cultivation
        5.2.5 The pollutant amount reduction caused by regulating and storing
        5.2.6 Water body self-purification content
            5.2.6.1 The self-purification content and the self-purification coefficient of the bigSouth Lake
            5.2.6.2 The self-purification content and the self-purification coefficient of thesmall South Lake
            5.2.6.3 The self-purification content present statistic of the South Lake
    5.3 THE CONFIRM OF THE SELF-PURIFICATION COEFFICIENT OFTHE SOUTH LAKE WATER BODY
CHAPTER 6: THE RESEARCH ON THE WATER QUALITY CHANGERULE OF THE SOUTH LAKE AFTER THE POINT SOURCESINTERCEPTION
    6.1 THE STUDY OF THE POLLUTANTS TOTAL AMOUNT AFTER THEPOINT SOURCE INTERCEPTION OF SEWAGE
        6.1.1 The point source pollutant amount after the interception of sewage
        6.1.2 The area source pollutant amount after the interception of sewage
        6.1.3 The inner source pollutant amount after the interception of sewage
        6.1.4 The pollutant reduction caused by fishery cultivation after the interceptionof sewage
        6.1.5 The pollutant reduction caused by regulating and storing after theinterception of sewage
        6.1.6 The self-purification content of the South Lake water body after theinterception of sewage
    6.2 THE CHANGE TREND PREDICTION OF SOUTH LAKE WATERQUALITY
CHAPTER 7:CONCLUSIONS AND RECOMMENDATIONS
    7.1 CONCLUSIONS
    7.2 RECOMMENDATIONS
REFERENCES
APPENDIX
ACKNOWLEDGEMENT

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 鄭保強(qiáng);水閘調(diào)度對(duì)河流水質(zhì)作用機(jī)制及可調(diào)性研究[D];鄭州大學(xué);2012年



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