Title page for etd-0809111-125718


[Back to Results | New Search]

URN etd-0809111-125718
Author Hsiao-Yu Hsieh
Author's Email Address No Public.
Statistics This thesis had been viewed 5345 times. Download 1731 times.
Department Marine Environment and Engineering
Year 2010
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The Treatment of Swine Wastewater by Horizontal Biofilter and Subsurface Constructed Wetland
Date of Defense 2011-07-04
Page Count 113
Keyword
  • Subsurface System Constructed Wetland (SFSCW)
  • Horizontal Biofilter (HBF)
  • Canna indica
  • Three-Process Treatment
  • Swine Wastewater
  • Abstract Swine wastewater is one of the major pollutions in Taiwan. The abundant nutrition and organic matters in it may lead eutrophication of water body. Meanwhile, the low dissolved oxygen level and high suspended solids concentration may also make it more difficult to handle the wastewater treatment. At present facility of swine wastewater in Taiwan is the three-process treatment which includes the solid-liquid separation, anaerobic digestion, and activated sludge system. Even though the three-process treatment is widely used, the efficiency of sediment and filter effectively to remove the nutrition, e.g., ammonia and phosphate is still in question. On the other hand, the activated sludge system is a difficult technique that the swine farmers can’t easily to operate. Based on these reasons, an efficient swine wastewater treatment process should be established. In this study, we replace the activated sludge system in three-process treatment with the horizontal biofilter (HBF) and subsurface system constructed wetland (SFSCW) to assess the practicability of improving the traditional process. HBF is a fix-biofilm system which is superior to the suspended growth of activated sludge system by its simple operation and no need to return the sludge from the final clarifier. Porosity in the gravel of SFSCW and the root zone of Canna indica can also help to remove the nutrients from the outflow of HBF. The tested HRT (hydraulic retention time) has been controlled at about 30 hours and results show that SS, BOD and COD removal efficiencies as 84.07%, 86.48%, and 68.45%, respectively. HBF and SFSCW provided approximate 70~80% and 10~20% removal efficiencies, respectively. This design of combining HBF and SFSCW system has high potential to treat the swine wastewater, and adding the backwash unit may further facilitate the operation in the future.
    Advisory Committee
  • Wen-Chien Kuo - chair
  • Chin-Ming Kao - co-chair
  • Lei Yang - advisor
  • Files
  • etd-0809111-125718.pdf
  • indicate access worldwide
    Date of Submission 2011-08-09

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys