Simulative nature river course water purification system

Abstract

The invention discloses a simulative nature river course water purification system. A river section is based on the trapezoidal compound section, multiple segments of filler purification regions are arranged at two sides in a main channel in a staggered manner so as to form sub-channels meandering on a plane, and the height of the filler purification region is higher than the low water level of the river; the filler purification region is filled with ripraps, broken stones and surface fillers from the bottom to the top; and a riprap banket is arranged between each two segments of filler purification regions. The simulative nature river course water purification system provides diversified habitat environments while strengthening the self cleaning capacity of the river and improving the river water environment quality, and plays an active role in repairing the biological diversity recovery of the stream segment. The simulative nature river course water purification system has the following remarkable advantages that the system operates in a passive unpowered manner, can improve the flow state, has no influence on the flood discharge of the main stream in the flood season, and has the advantages in multiple aspects, such as excellent water purification and ecological restoration effect and so on, especially, the system is suitable for the small rivers with low sediment amount and low flow velocity, or the scenic rivers.

Description

technical field [0001] The invention belongs to the technical field of river water quality purification and ecological restoration, and in particular relates to a pseudo-natural river water purification system for improving the water quality of polluted rivers and restoring river ecology. Background technique [0002] At present, our country is facing the dual problems of water resource shortage and water environment pollution. Some rivers undertake the sewage discharge function of industrial wastewater, domestic sewage and non-point source pollution, which makes the problem of river pollution extremely prominent, causing serious damage to urban water security and residents' health. Therefore, the technical demand for river water quality improvement is extremely urgent. At present, the main excessive pollutants in rivers are COD and ammonia nitrogen. [0003] River purification technologies are mainly divided into physical, chemical, ecological, biological and combined tech...

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Problems solved by technology

[0010] There have been some practices in the construction of artificial wetlands using riverbeds, such as the contact oxidation technology between gravels, but the general problem is that the flow state of the river is not in an optimal state, and the particle size of the filler is small, and the growth of algae is easy to cause blockage. Unable to smoothly flow through the bed in the packing purification area, the river water and the matrix material in the packing mainly conduct mass transfer and exchange of pollutants and metabolites through convection and conduction, and the wetland treatment efficiency is low

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