A method for breeding and domesticating subsurface flow constructed wetland plants

A technology of subsurface wetlands and constructed wetlands, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of poor adsorption and enrichment capacity, low oxygen transport capacity, etc. The effect of strong ability, developed root system and dense stems and leaves

Active Publication Date: 2016-06-22
SHENYANG ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for breeding and domesticating subsurface constructed wetland plants, which solves the shortcomings of existing seedling pollutants such as poor absorption, utilization, adsorption and enrichment capabilities, and low ability to transport oxygen to root zone aerobic microorganisms. Strong stress resistance, strong ability to absorb and absorb pollution, well-developed root system, dense stems and leaves, etc.

Method used

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  • A method for breeding and domesticating subsurface flow constructed wetland plants

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Experimental program
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Effect test

Embodiment 1

[0024] The length of the subsurface wetland unit designed in this embodiment is 30m, the width is 20m, the hydraulic gradient of the subsurface wetland unit is 0.5%, and the adjustable water depth of the subsurface wetland unit is controlled at 0.3m. The designed organic load of the wetland unit is set at 60kgBOD / ha.d for BOD, and the designed hydraulic load is 0.3m / day.

[0025] The present embodiment selects any one of reed, cattail and wild rice stem to be planted alone, and the reed is taken as an example below to illustrate: the selection and domestication method of subsurface flow constructed wetland plants comprises the following steps:

[0026] Step 1: Select the above subsurface wetland unit, including the first subsurface wetland unit for the first acclimatization and the second subsurface wetland unit for the second acclimatization.

[0027] Step 2: Plant reed seedlings on the planting soil with a thickness of 150 mm in the first subsurface wetland unit, and the pla...

Embodiment 2

[0036] The subsurface wetland unit designed in this embodiment has a length and width of 30m and a width of 20m; the hydraulic gradient of the subsurface wetland unit is 1.0%, and the adjustable water depth of the subsurface wetland unit is controlled at 1.2m. The designed organic load of this wetland unit is 80kgBOD / ha.d, and the designed hydraulic load is 0.4m / day.

[0037] The present embodiment selects any one of reed, cattail and wild rice stem to be planted alone, and the cattail is taken as an example below to illustrate: the selection and domestication method of subsurface flow constructed wetland plants comprises the following steps:

[0038] Step 1: Select the above subsurface wetland unit, including the first subsurface wetland unit for the first acclimatization and the second subsurface wetland unit for the second acclimatization.

[0039] Step 2: Plant reed seedlings on the planting soil with a thickness of 300mm in the first subsurface flow wetland unit, and the ...

Embodiment 3

[0047] The subsurface wetland unit designed in this embodiment has a length and width of 30m and a width of 20m; the hydraulic gradient of the subsurface wetland unit is 0.8%, and the adjustable water depth of the subsurface wetland unit is controlled at 0.8m. The designed organic load of this wetland unit is 110kgBOD / ha.d, and the designed hydraulic load is 0.45m / day.

[0048] The present embodiment selects any one of reed, cattail and wild rice stem to be planted separately, and the wild rice stem is taken as an example below to illustrate: the breeding and domestication method of subsurface flow constructed wetland plants comprises the following steps:

[0049] Step 1: Select the above subsurface wetland unit, including the first subsurface wetland unit for the first acclimatization and the second subsurface wetland unit for the second acclimatization. The subsurface flow wetland unit in this embodiment includes:

[0050] Step 2: Plant reed seedlings on the planting soil w...

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Abstract

The invention discloses an undercurrent artificial wetland plant breeding and domesticating method, and relates to biological treatment of water, wastewater or sewage. The undercurrent artificial wetland plant breeding and domesticating method comprises the following steps: by a dry-wet alternate seedling domestication method, through primary domestication, with 14 days as a period, gradually increasing a hydraulic load and an organic load to screen out seedlings with the heights of 1.8-2.0 m; performing secondary domestication to obtain wetland plants with high stress resistance, strong pollution absorbing capacity, a developed root system and dense stems and leaves. By the undercurrent artificial wetland plant breeding and domesticating method, the treatment capacity of a wetland is increased by 10-20%; intergenerational transmission can be performed on the seedlings with a certain genetic property, which are bred and domesticated for a long time.

Description

technical field [0001] The invention relates to biological treatment of water, waste water or sewage, in particular to a method for breeding and domesticating subsurface flow artificial wetland plants. Background technique [0002] Wetland plants have the following advantages in water pollution treatment: 1) they can provide energy sources for purification through photosynthesis; 2) they can improve the landscape ecological environment and have certain aesthetic appreciation; 3) the huge plant root system is bacteria Provide a variety of living environments; 4) Transport oxygen to the root zone, which is conducive to the aerobic respiration of microorganisms. [0003] However, conventional aquatic plants have poor pollutant absorption and utilization, adsorption and enrichment capabilities in sewage treatment, and low ability to transport oxygen to aerobic microorganisms in the root zone, which makes the wetland treatment efficiency low and is not conducive to the constructi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCC02F3/32Y02W10/10
Inventor 陈晓东张华邵春岩王磊张帆孙文章袁英兰
Owner SHENYANG ACAD OF ENVIRONMENTAL SCI
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