Dissertation > Excellent graduate degree dissertation topics show

The Treatment of Micro-polluted Water by Hydrogen Peroxide and Activated Carbon

Author: WanHaiYan
Tutor: WangZuo
School: Wuhan University of Science and Technology
Course: Municipal Engineering
Keywords: Micro-polluted water Peroxide Activated carbon CODMn UV254
CLC: TU991.2
Type: Master's thesis
Year: 2008
Downloads: 348
Quote: 1
Read: Download Dissertation

Abstract


With industrial development and the improvement of people's living standards, excessive emissions of industrial wastewater and domestic wastewater, more and more widespread use of the chlorinated organic compounds, resulting in global surface water is seriously contaminated. Conventional water treatment processes (such as coagulation - sedimentation - filtration - disinfection) to remove to such pollutants only organic matter from one form to another form, can not be completely oxidized and decomposed organic pollutants. Compared with conventional water treatment processes, oxidation technology (especially advanced oxidation processes) can be micro-pollutants harmless. Advanced oxidation process mechanism is mainly based on the formation of hydroxyl radicals, OH, followed by hydroxyl radicals · OH degradation of organic pollutants into carbon dioxide and water. A hydroxy radical · OH has a strong oxidation ability, can be directly oxidized into water, carbon dioxide, trace organics in water, such oxidation process without secondary pollution of drinking water, the treatment effect can be achieved over conventional processing. Hydrogen peroxide - activated carbon for the treatment of slightly polluted water craft is now at home and abroad more cutting-edge research topics. Hydrogen peroxide is a relatively strong oxidizing agent, which can produce a large number of hydroxyl free radicals · OH, able to resist degradation, oxidation of organic matter decomposition. Hydrogen peroxide - activated carbon for the treatment of slightly polluted water aimed at the removal of organic pollutants and turbidity, and create favorable conditions for subsequent conventional treatment process. Hydrogen peroxide - activated carbon for the treatment of slightly polluted water test results show that: (1) H2O2 pretreatment micro-polluted water, treated water, regardless of the type or quantity of organic matter, compared with conventional water treatment water are larger The rate of decline. When the PAC dosage of 3 mg / L hydrogen peroxide dosage of 2 mg / L, the UV 254 the value and CODMn value decreased very significantly, decreased by 85.14% and 54.32%, respectively, of the original most of the organic matter of the water is removed. (2) H2O2 pretreatment process than conventional water turbidity, a decreasing precipitation water and filtered water turbidity, thus significantly improve the water quality of the filtered water, extending the duty cycle of the filtration column, saving from the water consumption of the water treatment plant. Dosing over the hydrogen peroxide Shen turbidity can be achieved following 1NTU, better than the corresponding individual dosing PAC; while the turbidity of the filtered water can be up to 0.38NTU. (3) granular activated carbon filtration column removal of organic micro-pollutants and turbidity. Settled water filtration, granular activated carbon filtration column quartz sand filtration column and then can make a decreasing effluent turbidity of the filtered water, and removal of organic matter also have a certain effect. Filtered water turbidity reached 0.38NTU the UV 254 values ??and the CODMn value decreased by 94.60% and 75.76%, while the filtered the water H 2 the O 2 residual amount of 0.31 × 10 -5 mol / L, almost trace, thereby significantly improving the water quality of the filtered water. The application of micro-polluted water treatment works to provide technical support available for reference, and laid the foundation for further study of the complex process slightly polluted water.

Related Dissertations

  1. New Technology and Basic Study on the Direet Preparation of PbO Powder from Galena by Selective Leaching Technology,TQ134.33
  2. Effects of Different Vegetation Restoration Types on Soil Carbon, Nitrogen and Microbial Flora in Guandi Mountain,S154.4
  3. A Preliminary Investigation on Regulation of Mitochondrial Motility by Hydrogen Peroxide in Myoblast,Q244
  4. Biofilter treatment of slightly polluted source water study,X52
  5. Grope for Treatment of the Refractory Organic Compounds in Reverse Osmosis Brine for Pertrochemiscal Wastewater,X703
  6. Study on the Preparation and Application of Activated Carbon of Xinjiang Thin-skinned Walnut Shell,TQ424.1
  7. The Mechanism of the Degradation of DNS and Its Kinetics,O643.12
  8. Preparation of Trans-1,2-cyclohexanediol,TQ233.1
  9. Study on Synthesis of Cyclohexene from H2O2 and Cyclohexene with Heteropolyphosphatotungstate or Heteropolyphosphatomolybdate as Catalyst,TQ231.1
  10. Research on Refractory Wastewater by Microwave Induced Catalytic Process,X703
  11. Gentiana Manshurica Kitagawa Prevents Acetaminophen-induced Acute Hepatic Injury in Mice via Inhibiting JNK/ERK MAPK Pathway,R285
  12. Study on the Effect of Phytoestrogen of Chinese Medicine on Estrogen Receptor Expression in Human Lens Epithelial Cells and Mechanisms of Signal Transduction,R285.5
  13. The Effect of EGB761 on Renal Tubular Epithelial Cells Apoptosis Induced by Hydrogen Peroxide Invitro,R285.5
  14. Research on the Treatment of Antibiotics Pharmaceutical Wastewater,X703
  15. High Salt Chemical Wastewater Treatment Process and Parameter Optimization of Research,X703
  16. The Studies of on Domestic Wastewater Treated by Three-phase Inner Loop Biological Fluidized Bed Process,X703
  17. Study on Nitrogen Renmoval in PAC and Bentonite Strengthened SBR System,X703
  18. Catechins on acid -mediated neuronal injury in rats and its mechanism,R743.3
  19. Effects of Long-Term Continuous Cropping on Cotton Growth and on Cotton Field Soil Biological Activity,S562
  20. Study on Electrospun PAN Nano-ACF and Its Adsorption Property,TQ342.74
  21. Preparation of sodium hypophosphite mud phosphorus heterogeneous catalytic oxidation of exhaust,TQ203.2

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