Dissertation > Excellent graduate degree dissertation topics show

Release of Characteristics Heavy Metals in Pipe Scale of Water Distribution System and Its Effect on Water Quality

Author: DuanChunYi
Tutor: ZhaoZhiLing
School: Huaqiao University
Course: Environmental Science and Engineering
Keywords: ArcGIS Water Distribution System Pipeline Information System Heavy metal Release Control measures
CLC: TU991.21
Type: Master's thesis
Year: 2013
Downloads: 2
Quote: 0
Read: Download Dissertation

Abstract


The management of urban water distribution system information and drinkingwater security technology had been one of the hot issues of social concern. In recentyears, heavy metal poisoning events occurred frequently due to the drinking watercontaminated by heavy metal so that the impact of heavy metals on the water qualityin the water distribution system also gradually caused widespread concern in theinternational community. Urban water supply network structure involved the safety ofdrinking water quality. And water distribution system information system is animportant foundation of the scientific management, hydraulic control and waterquality. Therefore, the establishing water distribution system information system,studying on the basis of changes in water quality of the water supply network and therelease of heavy metals was to protect the safety of water supply were of greatsignificance not only to improve the water quality and management of pipelineinformation by the relevant departments, but also maintain social stability.This thesis finished fundamental census work for water distribution system ofDistrict A to improve the area’s water supply pipeline database, combined with GISdevelopment platform for secondary development, further established themanagement system of the water distribution system information of District.Theconstruction of the information management system was divided into the major steps,the first step was to analyze water supply pipeline system framework and overalldemand, design their functional modules, and select ArcGIS Engine as a secondarydevelopment platform. Secondly, the carried out a census of the pipeline beforeestablished of the database by field data collection and office operation. Organizedand managed data by Access model in ArcGIS. Pipe network graphics stored werekept up with and attribute information integration. Finally, the integration of data andsecondary development to realize information system management functions.Research was based on the information of GIS management system of DistrictAs water distribution system. Firstly, set the sampling point before sampling in waterdistribution system to evaluate the variation of the water quality. Along with the extension of water supply line, various water quality indicators were rose. Singlefactor variable simulation experiments were based on a large number of formerstudies to selected most significantly influencing factors on heavy metal release. pH,immersion time, chloride ion, sulfate ion, flow velocity were the studied factors of therelease of heavy metals obviously. Decreasing velocity, increasing pH and heavymetal in the water did not have a negative impact on water quality. When the waterflow speed was of1.0to1.3m/s or above, there was significant heavy metal releasephenomenon. As and Fe was in positive correlation between the degree of net release.According to the study results, the proposals of control of operating conditions of thewater distribution system and water quality were put forward.

Related Dissertations

  1. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  2. Preparation and Properties of Highly Active Dietary Fiber and Carboxymethylcellulose from Gracilaria Residue,TS254.9
  3. Research on Liquidity Requirements and Efficiency in Large-value Payment Systems,TP301.6
  4. Plant-mediated Methane Transport and Methane Emissions from Phragmites Australis Marsh in Minjiang River Estuary,X502
  5. The Comprehensive Evaluation of Flue-cured Tobacco Origin Place Environment and Tobacco Leaf of Fangxian,S572
  6. Theanalysis of Harmfulness Factors about Heavy Metals in the Course of Beef Cattle Feeding,S823
  7. Influence of Biochar Amendments on Decomposition of Soil Organic Carbon and Morphology of Heavy Metal in Red Paddy Soil,S153.6
  8. Preparation and Properties of Chitosan-based Thermosensitive Composite Hydrogel,R943
  9. Preparation and Properties of the Olive Oil (Jasmine Oil) Microcapsules,TS225.1
  10. Study on Monitoring and Early Warning for Heavy Metal in Textiles,TS107
  11. Field In-Situ Remediation of Cu-Cd Polluted Soil by Amendments,X53
  12. Study on Nitrogen and Phosphorus Release Fluxes of Sediment-water Interface in Dutang Reservoir,X524
  13. Experimental Study on Heavy Metals Adsorption or Release from Sediments of East Dongting Lake,X524
  14. Design and Development of the Early-Warning System for Soil Pollution Based on .NET and ArcGIS Engine,X833
  15. Spatial Variability and Quality Evaluation of Soil Nutrient in the Small Watershed of Red Eroded Soil Area,S158
  16. Website design and construction of grass-roots units,TP311.52
  17. Preparationandapplication of the Strong Alkali Anion Exchange Fiber Based the Polyethylene,TQ342.84
  18. Cloning, Identification and Eukaryotic Expression of Variable Region of Monoclonal Antibodies Against Chelated Mercury, Copper and Zinc and Three Dimentional Modeling of Recombinant Antibody,X171.5
  19. The Removal of Heavy Metal Ions from Wastewater by Graphene/MnO2 Adsorbent,X703
  20. The Heavy Metals Distribution Characteristics and Risky Evaluations of Farmland Soils-Crops Around Different Types of Chemical Industrial Park,X833
  21. Transfer and Transformation of Cu in Black Soil-Crop System and In-sit Immobilization Mechanism,X53

CLC: > Industrial Technology > Building Science > Municipal Engineering > Water supply project ( on the Water Works ) > Clean Water ( water treatment ) > Water quality
© 2012 www.DissertationTopic.Net  Mobile