Desilting system suitable for riverway

Abstract

The invention provides a desilting system suitable for a riverway. The desilting system comprises at least two weir bodies, floating filter strips and ecological floating islands are arranged on the lower course of the weir bodies, the floating filter strips are installed on the lower portions of the ecological floating islands, aquatic plants are arranged in the ecological floating islands, a desilting basin is arranged on the lower course of the filter strips, the bottom of the desilting basin is lower than the bottom surface of a river bed, and an ecology landscape weir is arranged on the lower course of the desilting basin. The multi-stage stepped weir bodies can reduce the flow speed of the bottom layer of the riverway, and sedimentation of silt, particulate matter and other large suspended solids in water is facilitated. The floating filter strips can intercept and adsorb suspended solids in river water. The desilting basin plays a role of a secondary sedimentation tank, the suspended solids in the water are further precipitated. The ecology landscape weir is the end point of the whole desilting system, inflow water overflows to the lower course from the upper ends of the weir bodies, it is ensured that the final outflow water is clear, and the desilting system has a landscape efficacy.

Description

technical field

[0001] The invention relates to water treatment technology, in particular to river sediment treatment, in particular to a sedimentation system suitable for river courses. Background technique

[0002] Affected by factors such as the environment and human over-exploitation, the sediment content of rivers in China is generally high. The main causes of high sediment concentration in rivers are as follows:

[0003] 1) Vegetation coverage - one of the main determinants;

[0004] 2) Soil quality - one of the main determinants; low vegetation coverage, loose soil, and river water scouring the river bank will easily increase the sediment content of the river;

[0005] 3) Rainfall intensity; when the rainfall intensity is high, surface runoff scours and brings in sediment;

[0006] 4) Terrain; if the terrain has a large drop and the scour kinetic energy of the surface runoff is strong, the sediment concentration will be high, and if the terrain is flat, the sedimen...

Images