| 摘要 |
An internal circulation typed vegetation filter apparatus is provided to gain excellent nature-friendly filtration/purification effects with aquatic plants by supplying river water in a tank easily. An internal circulation typed vegetation filter apparatus(100) includes a depot(10), a vegetation part(20), a transfer pipe(30) and an air supply unit(40). The depot flows and ejects foul water etc. The depot includes an inlet(11), an outlet(12), a removing port(13). The vegetation part includes a culture soil layer(22), a sand layer(23), a nonwoven fabric layer(24), a reticular vegetation member layer(25) and a support layer(26). The transfer pipe includes a wastewater suction pipe(31) and a wastewater distribution pipe(32).
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