Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal
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概要
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This study examined the ability of charcoal to remove organic matter, nutrients and heavy metals from agricultural drainage. Water treatment equipment containing wood charcoal was installed in a test paddy field. Concentrations of total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP) and heavy metals (Cr, Fe, Zn and Pb) in water samples taken before and after passing through the equipment were analyzed. The equipment was installed simply at the outlet in the test field and removed environmental load substances during a contact time of more than one hour. The reduction rates of TOC and TN ranged from 20 % to 40 %. The reduction rate of TP ranged from 20 % to 90 %. The reduction rates of metals (Cr, Fe, Pb) ranged from 23 % to 62 %. These results suggest that charcoal can be used in water treatment equipment to treat paddy field drainage water.
著者
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HITOMI Tadayoshi
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, Japan
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KUBOTA Tomijiro
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, Japan
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SHIRATANI Eisaku
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, Japan
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Hamada Koji
Laboratory Of Plant Pathology Graduate School Of Agricultural And Life Sciences The University Of To
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Yoshinaga Ikuo
Research Team for Subtropical Farming, National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization (NARO), Japan.
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Hamada Koji
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, National Agriculture and Food Research Organization (NARO), Japan.
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Miura Asa
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, National Agriculture and Food Research Organization (NARO), Japan.
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Shiratani Eisaku
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, National Agriculture and Food Research Organization (NARO), Japan.
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Hitomi Tadayoshi
Laboratory of Water Environment Conservation, National Institute for Rural Engineering, National Agriculture and Food Research Organization (NARO), Japan.
関連論文
- Evaluation of the Characteristics of Microorganisms that Contribute to Denitrification in the Paddy Drainage Treatment Apparatus by Quinone Composition Measurement
- Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal
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