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Nested oxygen-enhanced landscape vertical current artificial wetland

A vertical flow wetland and nested technology, which is applied in the direction of aerobic and anaerobic process treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problem of small footprint and achieve high utilization rate, Improve water quality and promote the removal of nitrogen

Active Publication Date: 2011-07-27
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the current vertical subsurface flow constructed wetland technology, and provide a nested aerobic landscape vertical flow constructed wetland with small footprint, good treatment effect, high landscape effect and relatively simple maintenance and management.

Method used

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  • Nested oxygen-enhanced landscape vertical current artificial wetland
  • Nested oxygen-enhanced landscape vertical current artificial wetland
  • Nested oxygen-enhanced landscape vertical current artificial wetland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 and figure 2 , the vertical flow wetland of the present invention is formed by nesting descending pool 2, ascending pool 3 and landscape pool 4 from inside to outside in sequence. The main body of each pool is a concrete structure, and the bottom is treated with anti-seepage to prevent sewage from seeping down and polluting groundwater. The three pools are distributed in concentric circles, and the height of the three pools decreases from the inside to the outside, among which the lower pool 2 is 15cm-20cm higher than the upper pool 3. The bottom of the descending pool 2 is provided with equidistant holes, so that the descending pool 2 communicates with the ascending pool 3, and the height of the peripheral landscape pool 4 is the lowest. A circular perforated aeration pipe 7 is laid on the bottom of the descending pool 2 , and one end of the aeration pipe 7 is connected to the air compressor 5 through the air guide pipe 6 . Both the descending pool ...

Embodiment 2

[0024] Such as Figure 4 As shown, the layout of this embodiment is opposite to that of Embodiment 1. The nested layers are landscape pool 4, ascending pool 3 and descending pool 2 from the inside to the outside, the outermost periphery is the descending pool 2, the middle is the ascending pool 3, and the inner It is a landscape pool 4, and the internal structure of the descending pool 2 and the ascending pool 3 is the same as that of Embodiment 1. The height of the three ponds decreases step by step from the outside to the inside, wherein the descending pond 2 is 15cm to 20cm higher than the ascending pond 3, and the upper part of the ascending pond 4 is covered with micro-holes, which is beneficial to water discharge. Other structures are the same as in embodiment 1, and the landscape pond 4 is collected and processed. The final water flows out of the pool body by the bottom guide pipe 8.

Embodiment 3

[0026] Such as Figure 5 As shown, this embodiment is a landscape application example, and a wetland flower bed 9 is constructed from the vertical flow wetland of the present invention. This wetland flower bed 9 is composed of three same vertical flow wetlands described in Embodiment 2, the descending pool 2 and the ascending pool 3 are nested together, the interior is the descending pool 2, and the exterior is the ascending pool 3. A nested combination of multiple descending pools 2 and ascending pools 3 is set in the wetland flower bed 9, and a shared landscape pool 4 is set in the middle of the wetland flower bed 9. The landscape pool 4 is provided with a landscape sprinkler 10, and landscape plants are planted on the surface of the flower bed.

[0027] The operation mode of this embodiment is: after the sewage enters the descending pool 2, it enters the ascending pool 3 in reverse after being processed, and after further treatment, it flows into the landscape pool 4 in the...

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Abstract

The invention provides a nested oxygen-enhanced landscape vertical current artificial wetland. The artificial wetland comprises a downflow tank, an upflow tank and a landscape tank, wherein the downflow tank, the upflow tank and the landscape tank are arranged in a nesting manner, the heights of the three tanks are gradually reduced, the bottoms of the downflow tank and the upflow tank are communicated, at least three layers of substrate packings are paved in the downflow tank and the upflow tank, coarse sands are paved on the top layer, a water outlet groove is arranged on the upper part of the upflow tank, perforated aerator pipes are paved at the bottom of the downflow tank; and landscape plants are planted in the three tanks. The artificial wetland of the invention adopts the concentric nesting structure so as to increase the utilization rate of the land resource; and the effluent of the upflow tank falls into the landscape tank from all around in a high dropping manner and the dissolved oxygen content of the effluent is further increased during the dropping process, thus increasing the water quality of the effluent, promoting the removal of oxygen element in the sewage, improving the landscape value of the wetland system and facilitating that the wetland can be popularized widely.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in environmental engineering, and in particular relates to a composite oxygen-increasing landscape vertical flow constructed wetland system. Background technique [0002] The constructed wetland sewage treatment system has the advantages of low infrastructure investment, low operating cost, good effluent quality, and simple maintenance and management. It has been widely used in domestic sewage, agricultural runoff treatment and lake pollution prevention and control. [0003] Constructed wetlands are generally divided into two types: surface flow constructed wetlands and subsurface flow constructed wetlands. Compared with surface flow wetlands, the treatment process of subsurface constructed wetlands is less affected by factors such as climate and seasons, and can effectively prevent the breeding of mosquitoes and flies and the generation of odors in wetlands. Subsurface flow constructed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/30C02F9/14
CPCY02W10/10
Inventor 张建范金林张成禄李一冉徐景涛张金勇李聪
Owner SHANDONG UNIV
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