Gravel bed structure and in-situ purification system of riverway water formed thereby

Abstract

The invention provides a gravel bed structure and an in-situ purification system of riverway water formed thereby. The gravel bed structure and the in-situ purification system of riverway water formed thereby have following beneficial effects: firstly, the gravel bed structure is disposed on a river bottom without occupying additional soil area and changing external appearance of an embankment; secondly, the overall system is flexible and changeable in such a manner that the overflow amount and processing amount of a river can be controlled by a flap regulating dam so that in flood seasons, the flap regulating dam can be completely opened for allowing river water to surmount and reponses are made based on variation in flow amount of riverway water; thirdly, back flushing operation can be realized by closing a water intake gate and completely opening the flap dam while by fully utilizing the terrain slope in association with a sludge pump, fine sludge discharge and back flushing effects are obtained; finally, productization equipment are adopted by the flap dam and the water inlet gate so that the whole set of system is easy to automatically control and helps to save manual cost during operation and is convenient to manage and maintain.

Description

technical field [0001] The invention belongs to the field of river channel purification, and in particular relates to a gravel bed structure and a system for in-situ purification of river channel water composed of the same. Background technique [0002] With the development of regional economy and the acceleration of urbanization, the problems of river water quality pollution and ecological degradation have become more and more serious. The input of oxygen-consuming organic pollutants and nitrogen and phosphorus nutrients has caused the water quality of rivers to deteriorate significantly. It poses a greater threat to the health of urban residents and the ecological security of the city. Therefore, how to deal with urban river water, which is typically characterized by low-pollution water, is an urgent scientific problem to be solved. Reducing the pollutant load in low-pollution water is of great significance for restoring the ecology of water bodies and the social function ...

AI Technical Summary

Problems solved by technology

[0003] At present, the low-pollution river treatment technologies used at home and abroad mainly include physical methods (such as dredging, mechanical algae removal, water diversion dilution, artificial flow, aeration, etc.), chemical methods (such as chemical reagents to remove algae, adding iron salts to promote phosphorus precipitation, adding lime for denitrification, etc.) and biological methods (such as artificial wetland treatment, aquatic plant restoration, microbial restoration and ecological floating beds, etc.), these methods have their own advantages and disadvantages

The obvious disadvantages of these methods include: large area and change of river channel shape (artificial wetland, restoration of aquatic plants), high energy consumption (such as aeration, mechanical algae removal), high cost (such as artificial flow, dredging, water diversion) dilution), additional costs (labor costs for harvesting ecological floating bed plants, chemical reagents for chemical methods), and inability to respond to changes in river water flow, etc.

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