Dissertation > Excellent graduate degree dissertation topics show

Study on Domestic Seawater Treatment by Biological Contact Oxidation Process

Author: DanKe
Tutor: JiMin;ZhangYuShan
School: Tianjin University
Course: Environmental Engineering
Keywords: Domestic Seawater Toilet-flush Seawater Biological Contact Oxidation Process Bio-treatment
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 24
Quote: 0
Read: Download Dissertation

Abstract


Domestic Seawater technology is an important part of seawater direct utilization technology. It’s also an efficient way to solve the shortage of freshwater problem in coastal area. With development and application of the comprehensive utilization of seawater in coastal cities, more and more saline wastewater has been produced and becomes a pollution source that can’t be ignored. Toilet-flush seawater and other wastewater from living quarters, islands, ships and warships contained many organic and other pollutions will hurt the environment. Biological contact oxidation process has the merits such as low energy consumption, low sludge production and small footprint. The biological contact oxidation process is very suitable for biological treatment of toilet-flush seawater from islands, living quarters, ships and other special occasions. It can solve the treatment question of saline wastewater after utilization of seawater. Therefore this study has important theoretical significance and broad prospects.Based on experiments, the paper investigated the efficiency of biological contact oxidation process on removing the pollutions from domestic wastewater containing seawater under different salinity. The characters of two kinds of filler were compared. And it indicated that the combined filler was more suitable. The result of experiments presented that it was feasible to treat the domestic wastewater containing seawater by biological contact oxidation process. When the salinity was low, the ratio of seawater lower than 36%, the removal rate of CODCr could reach 90% in the reactor filled with composite filler, and CODCr was lower than 50mg/L. When the salinity was higher, the ratio of seawater between 72%~100%, the removal rate of CODCr could reach 80% and the CODCr was also about 50mg/L.This study optimized the biological contact oxidation process by membrane bioreactor(MBR). The results showed that the removal rate of total nitrogen(TN) and ammonia enhanced much by the optimized process. And it also improved the effect of removing CODCr. But it had little improvement on removing total phosphorus(TP). The optimized process showed strong adaptability to salinity shock and loading shock. In addition, the membrane fouling in the optimized process was slight. The membrane flux decreaseed only 18% within more than a month.

Related Dissertations

  1. Study on the Preparation and Application on Water Treatment of Fiber-Fly Ash Ceramisite,X703
  2. Study on Bioremediation and Ecological Restoration in Dishui Lake Diversion Channel,X703
  3. Study on the Treatment of Rural Non-point Source Sewage by Biological Contact Oxidation Process in Ditch Shape,X703
  4. Research on the Treatment of Cornstarch Wastewater by Hydrolytic-aerobic Biological Contact Oxidation Process,X703.1
  5. Technology Analysis and Post-treatment Process Study on Domestic Sewage Purification Biogas Digester,X703
  6. Study on Organic Wastewater Treatment by Pressurized Biological Contact Oxidation Technology,X703
  7. Technical Study on Biotreatment of Cyclohexanone Processing Wastewater,X783
  8. Study on Chemical Fiber Wastewater Biotreatment with an Airlift Loop Reactor,X783.4
  9. The seawater flushing regional wastewater denitrification study,X703
  10. The Prepatation of Bio-Philic Carbon Fiber and Its Effects Evaluation,TQ342.742
  11. Isolation and identification of three strains of degradation of the herbicide atrazine and applied research,X592
  12. Preparation of Polyferric Inorganic Polymer Composites and Application in Treatment of the Starch Wastewater,X703
  13. Experimental Study on the Treating of Fermentation Mother Liquid of Monosodium L-glutamate,X703
  14. Effects of Copper on Anaerobic-Aerobic Biotreatment of Swine Wastewater,X703
  15. Study on Shortcut Nitrification-Denitrification and Influence Factor in Hypersaline Wastewater Treatment by MBR,X703
  16. Distribution of Chemical Fractions and Potential Mobility of Heavy Metals during Bio-treatment Process of Municipal Wastewater,X703
  17. Study on Enzymatic Activities in an Anaerobic-Anoxic-Aerobic System,X703
  18. Effect of Non-Fiber Components in Bamboo on the Bamboo SCMP’s Properties,TS749.3
  19. Study on the Treatment Process of Rubber Accelerator Manufacturing Wastewater,X703
  20. Studies on Biotreatment Technology for Starch Wastewater,X792

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