Purification of the wastewater from aquaculture ponds using the mangrove ecosystem
Description
[Synopsis]
An experiment was carried out using a semi-closed system, in which the wastewater from the prawn aquaculture ponds was passed through a mangrove afforested area with the aim of improving its quality before its return to the aquaculture ponds. The effect on the decrease in environmental load was examined. Watercourse 1, leading from the aquaculture ponds to the mangrove ponds, appeared to be the main site of decomposition for uneaten feed and generation of nutrients. Furthermore, a balance between decomposition and generation was observed in the mangrove pond; and nutrients were taken up by the phytoplankton in the prawn aquaculture ponds. During the experimental period, 22.37 kg of nitrogen was removed by the mangrove ecosystem. The nitrogen removal rate was calculated to be 62 - 232 mgN/m3 /day.
- Affiliation
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Japan International Research Center for Agricultural Sciences Fisheries Division
- Classification
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Administration
- Term of research
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FY2000 (FY1998-2000)
- Responsible researcher
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SHIMODA Toru ( Fisheries Division )
- ほか
- Japanese PDF
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2000_24_A3_ja.pdf890.83 KB