污水中存在過量的磷酸鹽與氨氮將會加劇水體富營養(yǎng)化,導(dǎo)致藻類無法遏制的增長。這一現(xiàn)象將對湖泊、河流、水庫以及沿海地區(qū)產(chǎn)生影響,也是近幾年造成嚴(yán)重的水污染問題原因之一。因此,去除磷酸鹽與氨氮對于控制富營養(yǎng)化是十分必要的。本研究的目的是為了優(yōu)化電絮凝方法以提高去除模擬污水中磷、氨氮以及化學(xué)需氧量的效率并將其應(yīng)用于實際污水處理。本研究分兩個階段進行:第一階段采用鐵、鋁電極進行電化學(xué)除磷。在這一階段中考察了電極間距、初始p H值、初始濃度、電流密度、COD、氨氮和氯化鈉添加量等因素的影響。在電極間距分別為1cm、2cm和5cm時,磷的去除率分別為92.2%、92.0%以及89.0%。對于p H值的研究結(jié)果發(fā)現(xiàn),當(dāng)p H等于3時磷的去除效果最好,但是為了避免過酸的環(huán)境,我們考慮適宜p H為5,且在此p H下除磷效率在55分鐘時可達(dá)到89.2%。同時,較小的初始濃度下除磷效率隨處理時間延長可提升至93.0%,并且當(dāng)電流密度從8.68 m A/cm2升至13.88 m A/cm2時,除磷效率相應(yīng)地從61.0%增加到89.2%。此外,實驗結(jié)果發(fā)現(xiàn)氨氮和COD的增加會使除磷效率微增,從89.2%升至91.... 

【文章來源】：中國地質(zhì)大學(xué)(北京)北京市 211工程院校 教育部直屬院校

【文章頁數(shù)】：143 頁

【學(xué)位級別】：博士

【文章目錄】：
摘要
Abstract
Chapter 1 Introduction
    1.1 Sources of phosphorus in wastewater
        1.1.1 Discharge due to household laundry detergents and its structure in municipal wastewater
        1.1.2 Discharge linked to human metabolism and its structure in municipal wastewater
        1.1.3 Discharge due to detergents household dishwashers and its structure in municipal wastewater
    1.2 Basic control of phosphorus
    1.3 Forms of phosphorus in wastewater
        1.3.1 Phosphorus compounds in aqueous solution
        1.3.2 Hydrolysis of phosphorus compound
        1.3.3 Hydrolysis of low- weight polyphosphates
        1.3.4 Hydrolysis of chain high – weight polyphosphate
        1.3.5 Hydrolysis of cyclic metaphosphate
    1.4 Sources of nitrogen from wastewater
    1.5 Forms of nitrogen
    1.6 Wastewater treatment technologies
        1.6.1 Physical and chemical phosphorus removal
        1.6.2 Phosphorus removal by chemical precipitation
        1.6.3 Biological phosphorus removal
        1.6.4 Influence of parameters of treatment management
        1.6.5 Interactions between biological mechanisms and physico-chemical
        1.6.6 Nitrogen treatment
        1.6.7 Electrocoagulation treatment
        1.6.8 Electro-oxidation
        1.6.9 Purpose and significance of this study
        1.6.10 Innovation
        1.6.11 Diagram of the contents of the study
Chapter 2 Optimization of phosphorous by electrocoagulation
    2.1 Introduction
    2.2 Materials and Methods
        2.2.1 Wastewater
        2.2.2 Apparatus
        2.2.3 Experiment methods
        2.2.4 Description of analytical tools and measurements
    2.3 Result and Discussion
        2.3.1 Phosphorus removal with iron electrode
        2.3.2 Phosphorus removal by electrochemical using aluminum plate
        2.3.3 Efficiency between Fe and Al electrode on phosphorus removal
    2.4 Conclusion
Chapter 3 Electro-oxidation removal of ammonium using Cu, Fe and Cu/Zn
    3.1 Introduction
    3.2 Materials and Methods
        3.2.1 Wastewater
        3.2.2 Apparatus
        3.2.3 Experiment methods
        3.2.4 Analysis
    3.3 Results and Discussion
        3.3.1 Performance removal of ammonium without NaCl
        3.3.2 Performance of ammonium removal with NaCl
        3.3.3 Effect of temperature
        3.3.4 Treatment of real wastewater under optimal conditions
        3.3.5 Comparison among the electrodes
        3.3.6 Degradation kinetic of NH4+-N
    3.4 Conclusion
Chapter 4 Real wastewater treatment by electrochemical Method
    4.1 Introduction
    4.2 Materials and Methods
        4.2.1 Wastewater
        4.2.2 Apparatus
        4.2.3 Experiment methods
    4.3 Results and Discussion
        4.3.1 Fe electrode
        4.3.2 Cu electrode
    4.4 Conclusion
Chapter 5 Conclusion and Recommendations
    5.1 Conclusion
    5.2 Recommendations
References
Published in International Scientific Journals indexed


【參考文獻(xiàn)】：
期刊論文
[1]Electrochemical oxidation of ammonia-containing wastewater using Ti/RuO2-Pt electrode[J]. Wei-wu HU1,2,Bin GONG3,Chuan-ping FENG1 1.School of Water Resources and Environment,China University of Geosciences(Beijing),Beijing 100083,P.R.China 2.Journal Center of China University of Geosciences(Beijing),Beijing 100083,P.R.China 3.Institute of Eco-environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,P.R.China.  Water Science and Engineering. 2009(04)



本文編號：3171343