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Stereo artificial wetland system for treating sewage

A constructed wetland system and a technology for constructed wetlands, applied in the field of three-dimensional constructed wetland systems, can solve the problems of short operating life of the system, few plant species, low hydraulic load and pollution load, etc., to increase the oxygen content and dissolved oxygen concentration, The effect of improving hydraulic conductivity and ensuring the treatment effect

Inactive Publication Date: 2008-05-28
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the problems of existing constructed wetlands used in sewage treatment, such as large floor area, easy blockage, low hydraulic load and pollution load, single matrix composition, few plant species, and long system operating life. Insufficient short-term and poor winter operation effect, provide a small footprint, less economic investment, lower operating cost, not easy to block, high hydraulic load and pollution load, stable operation, long operating life, high thermal insulation performance in winter , three-dimensional constructed wetland system for sewage treatment with good treatment effect

Method used

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Embodiment 1

[0038] A three-dimensional artificial wetland system for sewage treatment is used for amino acid wastewater treatment.

[0039] Before amino acid wastewater treatment, the pH in the wastewater is 9.43, the COD is 1100mg / l, the ammonia nitrogen is 1220mg / l, and the suspended matter is 600mg / l.

[0040] The structure of a three-dimensional constructed wetland system for sewage treatment is designed as follows:

[0041] Pretreatment unit: the design size is 5m×3m×0.8m in length×width×height, and it is divided into two parts. There are two thick and thin grids, with a grid spacing of 10mm, made of glass fiber reinforced plastics, the primary treatment of suspended solids is carried out in the grid pool (14), and the water quality and water quantity are adjusted in the primary adjustment tank (6).

[0042] Drop trough (13): the design size length * width * height is 5.03m * 3m * 0.6m, and the slope is 6%.

[0043] Porous filtering vertical flow artificial wetland bed (3): built o...

Embodiment 2

[0047] A three-dimensional artificial wetland system for sewage treatment is used for galvanizing wastewater treatment.

[0048] Before galvanizing wastewater treatment, the pH in the wastewater is 3.48, the chromium is 22.77mg / l, the zinc is 15.44mg / l, the iron is 40.69mg / l, the manganese is 20.33mg / l, and the suspended matter is 165mg / l.

[0049] The structure of a three-dimensional constructed wetland system for sewage treatment is designed as follows:

[0050] Pretreatment unit: the design size is 9m×2.5m×0.8m in length×width×height, and it is divided into two parts. ) is provided with two thick and thin grids with a grid bar spacing of 10mm and made of glass fiber reinforced plastics. The suspended matter is initially treated in the grid tank (14), and the water quality and water quantity are adjusted in the primary adjustment tank (6).

[0051] Drop trough (13): the design size length * width * height is 9.02m * 2.5m * 0.6m, and the slope is 4%.

[0052] Porous filter ...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment tridimensional artificial wetland system that is used for the industrial waste water treatment of small-scale isolated pollution sources. The invention aims at providing a tridimensional artificial wetland system that is used for sewage treatment and that has small floor occupancy, high hydraulic load, high pollution load and long service life so as to overcome the defects of the current sewage treatment of big artificial wetland floor occupancy, low hydraulic load, low pollution load and short system service life. The key points of the invention are that: the artificial wetland for sewage treatment adopts a tridimensional assembled structure of vertical current artificial wetland and horizontal subsurface flow artificial wetland, and base materials are filled in various directions to form the tridimensional artificial wetland system for sewage treatment; the tridimensional artificial wetland system for sewage treatment comprises a water collecting header, a porous water-filtering vertical current artificial wetland bed, a first-stage regulating tank, a water drop chute, a grid tank, a second-stage regulating tank, a horizontal subsurface flow artificial wetland bed and a water collecting tank.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a three-dimensional constructed wetland system for sewage treatment for industrial waste water treatment of small-scale isolated pollution point sources. Background technique [0002] At present, constructed wetlands are widely used in sewage treatment. Constructed wetlands have low investment, good effluent quality, strong impact resistance, simple operation, low construction and operation costs, convenient maintenance, and organic sewage treatment and environmental ecological construction. Combining the characteristics of creating an ecological landscape while treating sewage. The existing artificial wetland method to treat sewage still stays in the treatment of small-scale domestic sewage, but for industrial wastewater with large amount of pollution, complex components, deadly heavy metals in wastewater, and serious harm to human life and safety, In particular, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/32C02F3/34
CPCY02W10/10
Inventor 刘鹏李星徐根娣张晓斌
Owner ZHEJIANG NORMAL UNIVERSITY
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