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Device and method for purifying sewage by utilizing horizontal subsurface flow constructed wetland

A technology of constructed wetland and horizontal subsurface flow, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. The effect of high production rate and processing intensity

Inactive Publication Date: 2014-11-19
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

But its treatment effect is poor, so a set of reasonable sewage treatment technology is particularly important

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  • Device and method for purifying sewage by utilizing horizontal subsurface flow constructed wetland

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Embodiment Construction

[0028] see figure 1 , the device for purifying sewage in a horizontal subsurface flow artificial wetland provided by the present invention, its main structure includes:

[0029] The horizontal spiral unloading decanter centrifuge 6 is composed of a centrifuge casing, a drum 5, a large spiral disk 4, a small spiral disk 2, a differential 7, and a bearing seat and a base. The livestock and poultry wastewater enters from the feed port 1 of the centrifuge. Under the action of the high-speed rotating drum and the screw with the same rotation direction as the rotating drum and a slightly higher or lower rotating speed than the rotating drum, the rotating drum at high speed generates a strong centrifugal force to The solid phase particles with a higher density than the liquid phase settle to the inner wall of the drum. Due to the different rotational speeds of the screw and the drum, there is a relative motion between the two (that is, a difference in rotational speed). The solid ph...

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Abstract

The invention provides a device for purifying sewage by utilizing a horizontal subsurface flow constructed wetland. The device comprises a horizontal spiral discharge sedimentation centrifuge, the horizontal subsurface flow constructed wetland, a nano aerated coagulation-micro-vortex flocculation device and a three-stage backwashing and screening device. The invention also discloses a method for treating the sewage by utilizing the device. The device has high treatment intensity, can adapt to sewage with different hydraulic loads, has better treatment effects on the sewage with higher volatility, deeply removes organic suspended substances and impurities in water, adsorbs inorganic harmful substances, simultaneously oxidizes residual toxic pollutants into low-toxicity or nontoxic small molecular substances, reduces the operating cost and improves the effluent effects.

Description

technical field [0001] The invention relates to a combined device for purifying sewage in a horizontal subsurface flow constructed wetland. [0002] The invention also relates to a method for purifying, reusing or discharging sewage by using the device. Background technique [0003] Reclaimed water development and reuse technology has developed rapidly recently, and has been widely used in the United States, Japan, India, Britain and other countries (especially Japan). These countries have determined the reclaimed water reuse technology suitable for their national conditions and strengths based on their own national and regional characteristics, making the reclaimed water reuse technology more and more perfect. In China, this technology has been valued by governments at all levels and relevant departments, and a lot of theoretical research and practical work have been done on water reuse in buildings. Reclaimed water projects have been carried out in many cities across the ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 王雷席北斗张列宇何连生黄彩红霍守亮贾璇李曹乐
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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