Simulation test device and method for sediment adsorption and release of pollutants at river intersections

Abstract

The invention discloses a simulation test device and method for absorbing and releasing pollutants from sediments at river junctions. The simulation test device comprises a water circulation device, aflow adjustment device, a sediment laying device and a sampling device. The sediments are laid at the river junctions, equal-height PVC boards are laid on other areas of a water tank, an junction angle is changed by rotating hinges at the junctions of a main stream and branches, pipes are led out from a downstream water tank to return to an upstream main stream and branches, a perforated plate isarranged at a water inlet of the water tank, and energy is dissipated to stabilize inflow in the water tank. The device can further monitor and control the flow of the main stream and the branches. The device can flexibly change the junction angle and the flow ratio of the junctions of the main stream and the branches and is applicable to rivers with different junction ratios under natural conditions; and meanwhile, the device further realizes the self-circulation function in the simulation process, water in a water storage tank can be reused, water consumption can be greatly saved, and the collection and centralized treatment of pollutant-containing wastewater can be facilitated to avoid secondary pollution.

Description

technical field [0001] The invention belongs to water environment and pollution treatment simulation test thereof, in particular to a simulation test device and method for sediment adsorption and release of pollutants at river intersections. Background technique [0002] The confluence of open channels in natural rivers is very common. The complex hydraulic characteristics of the confluence area have a huge impact on the migration and diffusion of pollutants, which is a key link in the transport of nutrients and pollutants in the river. The confluence of river reaches can be roughly divided into two types: the tributary slanted to the main stream, and the "Y" confluence. Among them, the confluence of tributaries and main streams is a typical geomorphic unit of the river system. Its complex morphological structure and hydrological conditions make its pollutant transport and mixing characteristics very complicated. To protect the water environment reasonably and effectively, i...

AI Technical Summary

Problems solved by technology

[0008] Purpose of the invention: In view of the deficiencies in the experimental devices for simulating sediment adsorption and release of pollutants in confluence rivers in the prior art, the purpose of the present invention is to provide a simulation test device for sediment adsorption and release of pollutants in river confluences

Images