Dissertation > Excellent graduate degree dissertation topics show

Preparation of Active Microporous Elastomer and Research on Their Biological Fixation Effects

Author: LiuYuHang
Tutor: LuXiaoZhong
School: Beijing University of Chemical Technology
Course: Materials Science
Keywords: Suspended filler moving bed process EVA high foam filler suspension PVF foam padding Porous carrier Simultaneous nitrification and denitrification
CLC: X703
Type: Master's thesis
Year: 2005
Downloads: 127
Quote: 0
Read: Download Dissertation

Abstract


Suspended filler moving bed process is that people in the activated sludge process based on the transformation from a highly efficient method of sewage disposal , the core part is the proportion of the aeration tank dosing as close to the water suspended filler growing microbial attachment carrier. Therefore , developed as a microbial habitat upon which new packing method of microbes key technologies for waste water treatment , and its performance directly affects the sewage treatment effects and investment costs. This article was prepared by two new porous polymer carrier - high foaming EVA foam padding suspended filler and PVF . Studies show that high elastic EVA foam filled with activated carbon particles suspended filler preparation of the novel , when the twin-screw extruder temperature was 185 ℃, dicumyl peroxide crosslinking agent mass fraction of 1% foaming agent azodicarboxylic amide mass fraction of 1.5 %, the packing density and void 0.85g/mL and 60% , respectively . In composite bioreactor wastewater treatment simulation , COD removal efficiency higher than 80% , and most are in the 90% to 95 % range , with a strong impact resistance ; dissolved oxygen was 2.0 ~ 2.2mg / L when ammonia nitrogen removal rate of 75 % or more ; hydraulic retention time is 5h , the highest biomass attachment ; sewage treatment effects than currently developed polyurethane and nonwoven filler removal effect is more ideal . EVA high foaming suspended filler due to its surface to the interior of different dissolved oxygen gradient , can be adapted to different requirements of the aerobic and anaerobic microbial growth , it can occur simultaneous nitrification and denitrification , the most suitable reaction conditions for the dissolved oxygen concentration of 2.0 ~ 2.2mg / L, N ratio (CODCr / NH 4 -N, abbreviated as C / N) is 30.

Related Dissertations

  1. Cultivation and Research of Aerobic Granular Sludge in Membrane Bioreactor,X703
  2. Research on Denitrification and Recovery of Phosphorus in Residual Sludge by Hybrid Membrane Bioreactor,X703
  3. Low temperature, dissolved oxygen and sludge age on the denitrification performance of SMBR,X703.1
  4. The Efficiency Using Membrane Bio-reactor to Treat Livestock Wastewater,X703
  5. Study on MBR Reclaimed Water Recycling System,X703
  6. Research on the Performance and the Membrane Fouling of Aerobic Granules Membrane Bioreactor,X703
  7. Research on the High-Ammonia Domestic Wastewater Treatment in the MBR Process,X703
  8. High Strength Ammonium Wastewater Treatment with Aerobic Granules by Simultaneous Nitrification Denitrification,X703
  9. Cultivation and Characteristics of Aerobic Granular Sludge in Sequencing Batch Airlift Reactor,X703
  10. Optimization of Submerged Membrane Bioreactor System and Study on Nitrogen Removal Performance,X703
  11. Removing Ammonia Nitrogen by Zeolite Combined Microbe Immobilization Technology in SBR,X703
  12. Study on the Optimum Operational Condition and Control Strategy of the Removal of Nitrogen in the Carrousel Oxidation Ditch,X703
  13. Study on the Performance and Processes of Simultaneously Nitrogen and Phosphorus Removal by Aerobic Granular Sludge at Low Temperature,X703
  14. Characteristics of Denitrification Bacteria in Wastewater Treatment and Self-Immobilization,X522
  15. For carbon carrier and in urban rivers and lakes Water Treatment Research,X52
  16. Research on Rapid Cultivation of Aerobic Granular Sludge and Its Characteristics in Biological Nutrient Removal,X703
  17. The Study of Denitrifying Technology of Heterotrophic Simultaneous Nitrification and Denitrification and Microbial Character,X703.1
  18. Study on Removing Ammonia Nitrogen from Eutrophication Water Bodies by Zeolite-Microbe Combined Immobilization Technology,X703
  19. Study on the Wastewater Treatment of Carrousel Oxidation Ditch,X703
  20. Study on Wastewater Treatment in Trash Repeater Station by A-HMBR Process,X703

CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
© 2012 www.DissertationTopic.Net  Mobile