Dissertation > Excellent graduate degree dissertation topics show

Bacteria Community Attached to Iron Pipe Wall in Drinking Water Distribution System of Jinan

Author: ChenZuo
Tutor: LiLi
School: Shandong University
Course: Environmental Engineering
Keywords: Drink water distribution system PCR-DGGE bacteria attached to pipewall iron corrosion AOC
CLC: TU991
Type: Master's thesis
Year: 2012
Downloads: 73
Quote: 0
Read: Download Dissertation

Abstract


Deterioration of drinking water quality in distribution pipes remains to be a serious problem for drinking water supply. Cast iron pipes have been common used in water distribution systems, e.g., in China, about50%of water distribution pipes are iron pipes because of economic and historical reason. Most water distribution pipelines have a buildup of iron corrosion products inside the iron pipes, and corrosion scales not only restrict the flow of water, but also degrade the water quality. This study has focused on iron pipes of the drinking water distribution system in Jinan.Firstly, the bacteria community of corrosion products was investigated in distribution system and colored tap water using culture-based method and PCR-DGGE method. Three dominant groups-Bacilli, Actinobacteria, and Proteobacteria (α,β, y-Proteobacteria), including Rhizobium, Pseudomonas, Lactococcus, Brevundimonas, Rheinheimera, Arthrobacter, Bacillus, and Herbaspirillum-were detected by PCR-DGGE method. XRF analysis indicated that the composition of elements in iron corrosion products and colored tap water were similar, and the most frequently detected element was Fe. X-ray diffraction analysis showed that the crystallographic composition of corrosion products were goethite (a-FeOOH), magnetite (Fe3O4) and CaCO3. The retentate of colored tap water was non-crystalline material. It indicated that the occurrence of colored water was not driven by hydraulic scour. Iron release will cause the intrusion of bacteria from corrosion products into the bulk water, which leads to pollution.Secondly, in this study, the effect of AOC on the re-growth of bacteria in distribution pipes we studied using the tap water in Shandong University with the addition of appropriate amount of acetic acid carbon. With biofilm annular reactors (BARs), the relationship between suspended bacteria and biofilm growth was tested in different AOC conditions. At the same time, detection of microbial species in the reactor under the conditions of different AOC level was performed. The results showed that high AOC favored growth of diverse bacterial species, including Sphingomonas sp., Pseudomonas sp., Flavobacterium sp., Acinetobacter sp., Hydrogenophaga sp., and Leptothrix sp. But in low AOC reactor, there were only Sphingomonas sp. and Pseudomonas sp. growing on slides.

Related Dissertations

  1. Studies on Microbial Contamination and Microbial Decontamination of Chemical Substances of Fresh Chicken,TS251.1
  2. Effect of Organic Nutritiveadditives on Soil Micro-ecological Restoration and Its Mechanism.,S143
  3. Ecological Control of Tobacco Bacterial Wilt in Continous-cropping Field and the Microecological Mechanisms,S435.72
  4. Investigation on the Diversity and Phylogenetic of Methanogens and the Relationship between Methanogenesis and Acetogenesis in the Hindgut of Pigs,S828
  5. Effect of Probiotics on Growth Performance, Digestive Enzymes Activities, Immunity and Gut Microbiota of Epiniphelus Coioides,S917.4
  6. The Applied Research on Microbial Agents in the Reduction of Crop Fertilizer Application Technology,S144
  7. Structral Modulation of Gut Microbiota in A Non-Alcoholic Fatty Liver Disease Rat Model during Treatment with a Chinese Herbal Formula (Qushi Huayu Fang),R285.5
  8. The Community Structure of Iron-Reducing Geobacteraceae in Rice Rhizosphere under the Stress of Polycyclic Aromatic Hydrocarbons,X53
  9. Microbial Diversity of Oral Saliva from Healthy Youths,R780.2
  10. Research on Tobacco Fields Microbial Diversity of Different Ecological Condition and Cultivation System,S154.3
  11. Plant-microbial Remediation for Crude Oil Contaminated Soil under Different Salt Content,X172
  12. The Establishment and Applications of the Methods to Quantify and Profile Feacalibacterium prausnitzii in Human Gut Microbiota,R378
  13. Structural Characteristics Research of Intestinal Microflora of Type 2 Diabetes Mellitus in Xinjiang Uygur and Kazak,R587.1
  14. Uygur four kinds of normal human intestinal microflora fluid mass distribution characteristics of,R291.5
  15. Microbial Community Diversity in Seismic Fault Belt Spring in Xinjiang,Q938.8
  16. Research on Microbial Community Structure of Phosphorus Removing Bacteria in MBR and Conventional Wastewater Treatment Systems,X172
  17. Effects of Different Long-term Fertilizations on Community Properties and Functions of Methanotrophs of Black Soil in Northeastern China,S154.3
  18. Variation of Bacteria Community Stuctures in Eutrophic Water Body During Water Bloom,X524
  19. Removal of Perchlorate from Drinking Water in an Ion Exchange Membrane Bioreactor,TU991.2
  20. Detection of Acute Viral Necrosis Virus (AVNV) in Plankton and Macroalgae Using FQ-PCR and Diversity Analysis of the Plankton,S917
  21. Study on Biological Effect of Controlling Cotton Virticillium Wilt with Antagonistic Bacillus and Bio-organic Fertilizer,S435.62

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