The initiative.Bung makkasan waste water treatment projects, due to the initiative. King Bhumibol Adulyadej gave the initiative. When April 15 and April 20, b.e. 2528, related departments improve the swamp, makkasan. To help water drain and relieve the samsen Canal wastewater conditions. Using the format "natural water filter." Part of this highway project "a swamp called a poor principle that water hyacinth exists around the plant is absorbed, sewage and clean water, it gives a very natural filtration using solar energy and the nature of the growth of plants ..."
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