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Constructed Wetland with Three Dikes and Two Channels Enhanced Surface Flow and Its Operation Method

A technology of artificial wetlands and embankments, applied in chemical instruments and methods, aerobic process treatment, water/sludge/sewage treatment, etc., can solve the problems of low water purification efficiency, large floor space, difficult maintenance, etc., to overcome Effects of large footprint, increased contact area, and increased processing efficiency

Active Publication Date: 2017-12-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of existing surface flow artificial wetlands, such as low water purification efficiency, difficult maintenance, and large floor area, the present invention provides a three-dyke and two-channel strengthening system with large contact area, good biodiversity, and can significantly improve sewage treatment efficiency. Surface flow constructed wetlands, while providing a method of operating the wetlands

Method used

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  • Constructed Wetland with Three Dikes and Two Channels Enhanced Surface Flow and Its Operation Method
  • Constructed Wetland with Three Dikes and Two Channels Enhanced Surface Flow and Its Operation Method
  • Constructed Wetland with Three Dikes and Two Channels Enhanced Surface Flow and Its Operation Method

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Embodiment 1

[0029] The artificial wetland with three embankments and two roads in this embodiment, such as figure 1 with figure 2 As shown, it includes bed body 1 (made of concrete body) and matrix 2. The bed body 1 is filled with a matrix 2, and the matrix 2 is soil. The water inlet end of the bed body 1 is provided with a water distribution weir 6 and a water inlet pipe 9, the water outlet end is provided with a drain pipe 8, and both ends are provided with baffle plates 7 to separate the two water inlet pipes or drain pipes. Control valves can be set on the water inlet pipe 9 and the drain pipe 8 to adjust the water inlet and outlet. The water distribution weir 6 is a triangular weir with a height of 0.4-0.45m piled up by gravel or stones with a particle size of 12-20cm. The cross section of the bed body 1 is rectangular, and the ratio of the width to the height of the bed body 1 is 1.8:1-2.0:1. The bed body 1 is inclined from the water inlet end to the water outlet end in the len...

Embodiment 2

[0033] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the height of the middle embankment is 20cm-30cm higher than the left embankment and the right embankment, and the non-submerged operation mode is adopted:

[0034] By controlling the speed of water in and out, and adjusting the water level of the two grooves, the middle embankment will not be submerged; the water flows through multiple filtrations of substrates, animals, plants and microorganisms to achieve sufficient purification and is discharged through the drain pipe.

[0035] In this embodiment, because the middle embankment is higher than the left embankment and the right embankment, the system realizes the symbiosis of wet plants and aquatic plants, which increases the degree of natural restoration of the system, thereby increasing the biodiversity in the system. The slope design greatly increases the contact area between the substrate and the sewage, improving the efficie...

Embodiment 3

[0037] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the height of the middle embankment is the same as that of the left embankment and the right embankment, and the alternate dry and wet operation mode is adopted:

[0038] Make the two trenches run alternately between dry and water, provide sufficient oxygen to enable plants and microorganisms to perform aerobic respiration, switch between aerobic respiration and anaerobic respiration, and maintain the activity of plants and microorganisms to the greatest extent; by controlling the in and out Water speed, adjusts the water level in the gutter.

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Abstract

The invention provides three-dike two-passage reinforced surface flow artificial wetland and an operation method of the three-dike two-passage reinforced surface flow artificial wetland. The artificial wetland comprises a bed body and a substrate, wherein the inside of the bed body is filled with the substrate; the cross section of the bed body is in a rectangular shape; the bed body is inclined from the water inlet end to the water outlet end in the length direction; two ditches are arranged in the substrate to form three dikes including a left side dike, a middle dike and a right side dike. According to the operation method, (1), when the height of the middle dike is lower than that of the left side dike and the right side dike, the submerging operation is adopted; (2) when the height of the middle dike is greater than the height of the left side and the height of the left side dike, the non-immersing operation is adopted; (3) when the height of the middle dike is identical to the height of the left side dike and the height of the right side dike, dry and wet alternate operation is adopted. The structure of the artificial wetland is changed; the sewage treatment area and the biodiversity are increased; the defects of great occupied area and low efficiency of the artificial wetland are overcome; meanwhile, after one passage is changed into two passages, the dry and wet alternate operation of the treatment process can be realized; the biodiversity is realized; the sewage processing efficiency is obviously improved.

Description

technical field [0001] The invention relates to a surface flow constructed wetland for purifying sewage and an operating method thereof, belonging to the technical field of sewage treatment. Background technique [0002] Constructed wetland is a comprehensive ecological system that is artificially built, controlled and operated in imitation of natural wetlands. After the sewage is discharged into the constructed wetland in a controlled manner, it is adsorbed, filtered and decomposed by the media, plants and microorganisms in the wetland under the synergistic effect of physics, chemistry and biology to achieve sewage treatment and resource utilization. Constructed wetlands have many advantages such as low investment, operation and maintenance costs, wide application range, impact resistance and strong load. Surface flow wetlands have been widely used because of their simple construction, easy control and operation, and good landscape effects. [0003] However, the tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/02
CPCY02W10/10
Inventor 张建李盛结张成禄钟文李旭阳韩松霖
Owner SHANDONG UNIV
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