| 摘要 |
A multi-diameter water collection pipe used for a riverbed filtration system is provided to make large-capacity riverbed capacity possible by increasing the length of an effective water collection pipe, to stably obtain good-quality water at a low price by heightening economical efficiency, and to improve the water quality of river water by discharging filtered water to a river. A multi-diameter water collection pipe used for a riverbed filtration system is installed to the appointed depth of a riverbed, and composed of a perforated pipe for conveying river water, which is filtered through an aquifer and flows inward, to a collecting well or lake, wherein the diameter of the multi-diameter water collection pipe becomes larger toward an outlet of filtered water, that is, the collecting well or lake. |
