Characteristics of contaminants in water and sediment of a constructedwetland treating piggery wastewater e uent
Soyoung Lee , Marla C. Maniquiz , Lee-Hyung Kim
DOI:
Received September 24, 2009,Revised January 11, 2010, Accepted , Available online
Volume 22,2010,Pages 940-945
- Summary
- References
- Related Articles
Constructed wetland (CW) is the preferred means of controlling water quality because of its natural treatment mechanisms and
function as a secondary or tertiary treatment unit. CW is increasingly applied in Korea for secondary e uent of livestock wastewater
treatment. This study was conducted to recognize the characteristics of contaminants in the accumulated sediment at the bottom soil
layer and to reduce the phosphorus release from sediments of the free water surface CW for the treatment of secondary piggery
wastewater e uent from a livestock wastewater treatment facility. The results revealed that the dominant phosphorus existence types
at near the inlet of the CW were non-apatite phosphorus (59%) and residual phosphorus (32%) suggesting that most of the particles of
the influent are made up of inorganic materials and dead cells. Sediment accumulation is important when determining the long-term
maintenance requirements over the lifetime of CW. Continuous monitoring will be performed for a further assessment of the CW
system and design.
