Dissertation > Excellent graduate degree dissertation topics show

A Study on the Simulation Measure of Throwing Microorganisms to Waihuan River in Tianjin

Author: LiYingLi
Tutor: SunBaoSheng
School: Tianjin University
Course: Environmental Engineering
Keywords: THROWING BACTERIA Mixed cast fungus Optimum dosage Complex microbial Vote bacteria
CLC: X703
Type: Master's thesis
Year: 2007
Downloads: 49
Quote: 2
Read: Download Dissertation

Abstract


China 's water environment pollution situation is very grim , especially of widespread pollution of the river basin , and was the development trend . Tianjin Outer Ring River since 2005 to serious mess resurgence phenomenon , serious river pollution . Tianjin Science and Technology Committee established research programs \parameters, the CODCr removal rate of 30 % , TN removal efficiency of 25% or more . In the simulation test , due to the presence of model design error , the first model of the calibration test , reducing the objective of the simulation test error ; eight bacterial mixed dosing conclusions drawn by the static test , whereby to determine at different CODCr mixed bacteria under optimum dosage ; purchase clean water agent MICROPAN of AQUA is determined by the simulation test continuous dosing is the best investment and bacteria . Based on the above mixed bacteria dosing trial of CODCr removal rate of 20 % , the removal rate of NH3 -N does not exceed 15% , the results show that the hybrid dosing is not feasible . Since then , based on the characteristics of yeasts and photosynthetic bacteria , do only small pilot trial dosing of these two bacteria CODCr and NH3-N removal rate reached 41.9% and 72.8% , respectively , the treatment effect can meet the engineering requirements . In order to verify the test results of a small trial simulation test also identified a number of important investment and bacteria parameters : the relative decline from the first vote bacteria thirteen days of NH3-N removal rate began to complex cast bacteria , complex vote scheduled for 13 days ; the complex dosage is 1 / 3 starts ; determine the optimal retention time of 8 days , counting from the point of investment and bacteria can reach the water flow through the eight days later , CODCr and NH3-N degradation engineering requirements. The blank comparison group CODCr and NH3-N degradation occur several times in the course of the above tests than the degradation of the vote bacteria group but also a good sign , do a pilot study of the aeration . The highest removal rate of CODCr about 20% , the highest removal efficiency of NH3 -N can reach about 13% , indicating that only through aeration reach engineering requirements .

Related Dissertations

  1. Yunnan High-altitude Area of Asphalt Pavement Composition and Properties of Materials,U414
  2. Cow muck fermentation production of biological organic fertilizer process optimization and application research,S141
  3. Study on Treating City Wastewater Using Efficiently Coupling Microorganism,X703
  4. Study on the Bioremediation of City Lake’s Water by Superior Strain,X524
  5. Research on the Mix Design and Construction Technology for Asphalt Concrete Pavement of State Road 318 China-nepal Highway,U414
  6. Onsite Biological Treatment of Micro-polluted Source Water under Conditions of Lifting Water and Aeration,TU991.2
  7. Sewage treatment technology research for the green watering,X703
  8. Application of Compound Microorganism Producting MBF in Treating Leather Water,X703.5
  9. Research and Application of Compound Microbial Treated Cornstalks and Growth Performance in Growing Cow,S823.5
  10. Research on Culture Optimization of a Bioflocculant-producing Bacterium and Bioactive Flora Compounding,X172
  11. The Primary Research on Complex Microbial Community in Municipal Solid Waste Composting,X705
  12. Fermentation of Apple Pomace for Fulvic Acid and Research the Application of Fulvic Acid on Maize Seed Coating,S482.99
  13. Primary Studies on the Application of Compound Microorganisms in Bioremediation of Polluted-river,X174
  14. Construction of a Microbial Consortium Used for Solid-State Fermentation on Rice Chaff for Its Cellulose Degradation,Q939.9
  15. Study on Flocculation Properties of Bioflocculant Produced by Complex Microorganism,X703.5
  16. Study on the Distribution of Nitrogen Ceycling Microbial Community in Bioremediation Process of Buji River,X703.1
  17. Screening of a Complex Microbial System Rss-4 for Effective Decomposition of Rice Straws,S141.4
  18. Research on Treating the Anaerobic Fermentation Liquor of Large and Medium Scale Piggery Wastewater with Coagulate Beforehand,X703
  19. Study on the Manufacture of the Efficient Complex Microbial Communit and Its Application in Composting,X705
  20. In-situ Bioremediation of Complex Organic Polluted Groundwater by Bio-augmentation in Laboratory,X172

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