Bung makkasan, a large swamp is located in the heart of Bangkok, where the railway authority of Thailand has dug up. In the year to be used as a source of 2474 drainage and waste water in the receptacle, including the factory rail Lubricator makkasan, rajthevee, make shallow marshes from the sedimentation of suspended matter composed of a swamp, with slum communities including Highway 3 729 households, most of whom are taking what interaction, click.And the amount of solid waste into the swamp, makkasan. Fertility problems, environmental degradation and spoiling become sources of the germs. His Majesty hath realizes semantically the pollution gave the initiative. When April 15 and April 20, b.e. 2528, various agencies together to improve highway marshes to help drainage and alleviate the State Canal samsen. Using the method of "natural water filter" is used, water hyacinth, which is the most chaphuet watchara do absorb toxic chemicals and sewage from spoiling, and sources at the same time, it must constantly bring out the water hyacinth from the swamp every 10 weeks, so no water hyacinth has obscured the Sun until the fertility that will shine into the swamp.
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