Underflow type back flushing multifunctional ecological filter dam

Abstract

The invention relates to an underflow type back flushing multifunctional ecological filter dam. The filter dam comprises a dam body, wherein the dam body is composed of an upstream area, a backwater area, a reaction area between the upstream area and the backwater area, and Reynolds mats laid on the outer surface of the dam body. The upstream area and the backwater area are both composed of firstpebbles, the end of the upstream area and the end of the backwater area are provided with gabions filled wit the first pebbles, the reaction area is composed of a filter material, and the Reynolds mats are filled with the first pebbles; the upstream area is provided with a row of back flushing branch pipes inclined upwards in the water flow direction, the lower ends of the back flushing branch pipes are provided with openings, and the upper ends of the back flushing branch pipes extend to the reaction area and are communicated with a back flushing main pipe; the end, extending out of the reaction area, of the back flushing main pipe is provided with a gas pump communicated with the back flushing main pipe; the upper end of the reaction area is evenly and fixedly provided with biological ribbons in the vertical direction of the water flow. The filter dam is simple in structure, novel and unique, easy to install and use and multifunctional, can purify a water body of a river channel, canflush silt of a blocked part of the filter dam, and has good social and economic benefits.

Description

technical field [0001] The invention relates to river ecological protection, in particular to an underflow backwash multifunctional ecological filter dam. Background technique [0002] Rivers are an important part of urban resources. Urban rivers not only provide water sources for cities to survive, but also play an important role in flood control and drainage and improving urban landscapes. However, with the rapid development of urbanization and industrialization, the amount of pollution received by urban rivers has been much higher than the amount of pollution that can be "digested" by rivers through self-purification. River pollution control has become an important part of environmental governance. Ecological filter dams, also known as permeable dams or filter dams, are the main facilities for river pollution control. They are in-situ purification facilities for rivers developed by combining artificial wetlands and rapid infiltration principles. Traditional ecological fil...

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a kind of submerged backwashing multifunctional ecological filter dam, which can effectively solve the problem that the existing ecological filter dam is easy to block, has poor filtering and purification capabilities, and cannot reach To ensure the normal drainage of the flood river

Images