alexa Characteristics of contaminants in water and sediment of a constructed wetland treating piggery wastewater effluent.
Engineering

Engineering

Journal of Civil & Environmental Engineering

Author(s): Lee S, Maniquiz MC, Kim LH

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Abstract 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 effluent 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 effluent 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.
This article was published in J Environ Sci (China) and referenced in Journal of Civil & Environmental Engineering

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