Water reuse device and treatment method for purifying sewage in vertical subsurface flow artificial wetland

Abstract

The invention provides a reclaimed water reusing device for purifying sewage by utilizing a vertical subsurface flow constructed wetland. The device comprises a grillage machine, the vertical subsurface flow constructed wetland, a nano aerated coagulation-micro-vortex flocculation device, a three-stage backwashing and screening device and an ultrafiltration device. The invention also discloses a method for treating sewage by utilizing the device. By adopting the device, advanced oxidation treatment can be carried out on the clarified sewage, so that the treatment efficiency and treatment capacity are improved, the processing properties are optimized and the effluent quality is improved while the operating cost is reduced; the removal rates of bacteria and pathogens in the sewage are high, the aromatic fulvic acid substances in the treated sewage are reduced by more than 95% and the turbidity of the sewage is reduced by 99%, so that the effluent has high quality and transparency, thus avoiding the threats to body health after the effluent is discharged into water bodies.

Description

technical field [0001] The present invention relates to a vertical submerged flow artificial wetland purification device for water reuse in sewage, in particular to a vertical subsurface flow artificial wetland purification device for removing pollutants (such as nitrogen, phosphorus, organic matter, microorganisms, inorganic substances and other chemical impurities) in sewage Sewage water reuse device. [0002] The present invention also relates to a method for sewage treatment using the above-mentioned device. Background technique [0003] At present, due to the excessive and unrestrained development of water resources, the awareness of environmental protection is relatively poor, so that surface water and groundwater have been polluted to varying degrees, and the supply of fresh water with good water quality is limited; moreover, the undeveloped Fresh water sources are far away from centralized water supply points, and the one-time investment costs are high. Many water-s...

AI Technical Summary

Problems solved by technology

[0004] There are too many impurities in the effluent of conventional biological treatment or ecological treatment, and the quality of effluent water is not up to standard, so the inherent ecological treatment cannot meet the needs of reclaimed water reuse, but the construction cost of ecological sewage treatment is low and the operation is simple, so the present invention adopts the concept of new technology Design a set of devices and methods to make the effluent meet the standard of reclaimed water reuse

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