Title page for etd-0028115-172250


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URN etd-0028115-172250
Author Yu-xin Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5387 times. Download 677 times.
Department Marine Environment and Engineering
Year 2014
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Feasibility Analysis of ANAMMOX Process Occurring in Microcosom Vertical-Flow Constructed Wetlands
Date of Defense 2015-01-09
Page Count 100
Keyword
  • Ammonia
  • ANAMMOX
  • VFCW
  • qPCR
  • Abstract Anoxic ammonium oxidation (ANAMMOX) is biochemical process based on the theory of autotrophic nitrogen removal through nitrite to nitrogen gas. Unlike heterotrophic denitrification requiring adding extra organic carbon sources, the process of ANAMMOX can remove ammonia to nitrogen gas from wastewaters characterized by a low content of organic materials.To reach the purpose, in this study a vertical-flow constructed wetland(VFCW) system with deep depth and high HRT was used. The VFCW system was installed with gravels and filled with some anaerobic sludge for ANAMMOX bacteria growth in the system.
    The three VFCW systems were all filled with gravels(20-40 mm in diam) as media, and controlled by three different conditions: anaerobic sludge seeding and with vegetation(Phragmites), anaerobic sludge seeding without vegetation, and without both seeding and vegetation, respetively. Artificial wastewater, with NH3 levels(50 mg N/L) and hydralic retention time (HRT) was controlled as 1 day for all three systems. The experimental results showed that nitrite was found in higher amounts than nitrate in depth of 20cm of the system, while nitrite was decreased down in large amounts with low dissolved oxygen (DO) of 0.5mg/L found in 40cm depth of same system, which was meant that ANAMMOX might occur in this area learned by nitrite removal through Anammox bacteria probably. It was inferred that for the VFCW systems used in this study, ANAMMOX occurred obviously in the areas of 40cm depth. For further study throuth the bio-technique of qPCR, the results exhibited that Anammox bacteria indeed existed in the VFCW systems of this study.
    Advisory Committee
  • Wen-Chien Kuo - chair
  • Jimmy Kao - co-chair
  • Lei Yang - advisor
  • Files
  • etd-0028115-172250.pdf
  • Indicate in-campus at 0 year and off-campus access at 1 year.
    Date of Submission 2015-02-05

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