Configuration method for undercurrent type artificial wetland woody plants in subtropical areas
A technology for subtropical regions and artificial wetlands, applied in the field of ecological environment, can solve problems such as winter plant problems and herbaceous plants withering, and achieve the effects of convenient reproduction management, expansion of screening range, and good purification effect.
Active Publication Date: 2013-01-16
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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[0005] The present invention aims to overcome the common problem of dead herbaceous plants in subtropical wetlands in winter, and provides a method for disposing woody plants in subsurface flow constructed wetlands, so that it has a stable water purification effect, especially in winter, and solves the problem of Plant problems in artificial wetlands in winter, which is more conducive to the promotion of artificial wetlands in subtropical regions
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[0018] The present invention will be further described below in conjunction with embodiment:
[0019] 1 Screening of woody plants
[0020] Based on extensive surveys and years of field observations, we selected 16 species of woody plants that can survive winter in subtropical regions and can be planted in subsurface constructed wetlands (Table 1).
[0021] Table 1 Plant species
[0022]
[0023] 1.1 Experimental materials and design
[0024] It is carried out in the constructed wetland pilot base of Zhuzhou Campus of Central South University of Forestry and Technology. The facility scheme system adopts a set of subsurface flow constructed wetland. The unit bed size is: length × width × depth = 5 × 2 × 1m, and the filler layer is vermiculite.
[0025] 1.2 Test process and operation management
[0026] The influent is sewage from the student living area, the main water quality index: chemical oxygen demand (COD Cr ) is 164.58-207.09mg·L -1 , total nitrogen (TN) is 37.5-5...
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The invention discloses a configuration method for undercurrent type artificial wetland woody plants in subtropical areas. The method includes: utilizing the characteristics that water of undercurrent type artificial wetland flows below 10-20cm of surface matrix to select from woody plants which can live through the winter safely in the subtropical areas according to staining resistance and decontamination capability, adaptability and physiological property indexes to obtain woody plants which can be applied to the undercurrent type artificial wetland, and configuring according to purification capability of the woody plants. The plants after configured can be engaged with various base materials, plants and microorganisms originally existing in the undercurrent type artificial wetland, andthe plants are configured to be oleander, hibiscus and gardenia. By the configuration method for the undercurrent type artificial wetland woody plants in the subtropical areas, the problem of withering of most herbaceous plants in artificial wetland in winter can be solved, selection range of artificial wetland plants is widened, and diversity of species is increased. The configuration method forthe undercurrent type artificial wetland woody plants in the subtropical areas is good in wastewater purification effect in the subtropical areas, can safely and effectively operate in the subtropical areas, and has good application prospects.
Description
technical field [0001] The invention belongs to the technical field of ecological environment, and in particular relates to a method for arranging woody plants in subtropical subtropical wetlands. Background technique [0002] Subsurface flow constructed wetland is the most commonly used constructed wetland type at present. In the subsurface constructed wetland system, the sewage flows under the surface of the wetland bed. On the one hand, the biofilm growing on the surface of the filler, the rich root system, the surface soil and the interception of the filler can be fully utilized to improve its treatment effect and capacity; On the other hand, because the water flows below the surface, it has the characteristics of good thermal insulation performance, little impact on the treatment effect by climate, and good sanitation conditions. This process makes full use of the oxygen transport function of the plant root system, and is especially beneficial to the root induction of ...
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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 陈永华吴晓芙郝君陈明利
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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