Method for screening and arranging artificial wetland winter plants for purifying domestic sewage in subtropical regions

A technology of subtropical areas and artificial wetlands, applied in chemical instruments and methods, biological water/sewage treatment, sustainable biological treatment, etc., can solve problems such as easy death of plants, achieve expanded screening range, good purification effect, and good purification effect Effect

Active Publication Date: 2011-05-18
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that artificial wetland plants are easy to die in winter in subtropical regions, the purpose of this invention is to provide a method for screening winter plants, and rationally arrange the selected plants so that they have good purification and landscape effects , which is conducive to the operation and promotion of constructed wetlands under subtropical environmental conditions

Method used

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  • Method for screening and arranging artificial wetland winter plants for purifying domestic sewage in subtropical regions
  • Method for screening and arranging artificial wetland winter plants for purifying domestic sewage in subtropical regions
  • Method for screening and arranging artificial wetland winter plants for purifying domestic sewage in subtropical regions

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Embodiment Construction

[0016] 1. Screening species of winter plants in artificial wetlands for domestic sewage purification in subtropical regions

[0017] On the basis of extensive investigation and years of field observation, we selected the following 25 plants as screening materials from the plants that can survive winter in subtropical regions and can be planted in constructed wetlands (Table 1).

[0018] Table 1 Screening plant species

[0019]

[0020] 2. Screening methods and results of winter plants in constructed wetlands for domestic sewage purification in subtropical regions

[0021] 2. Comparison of physiological characteristics of 125 kinds of plants

[0022] Table 225 Comparison of Physiological Characteristics of Plants

[0023] plant

root length cm

Root activity ug·g -1 h -1

Malondialdehyde content nmol / g

rose

12

93.35

51.77

Privet

17

181.63

12.98

Bear palm

10

65.09

11.73

Hongjimu ...

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Abstract

The invention relates to technology for screening and arranging winter plants in artificial wetlands for purifying domestic sewage in subtropical regions. A method comprises the following steps of: screening seven plants with high purification capabilities, such as cress, rape, juncus effuses, saxifrage, Iris germannica, sweet osmanthus flower and flagIris according to adaptation capabilities andthree indexes such as a physiological property, a pollution resisting and removing capability and matrix enzyme activity; and combining and arranging the screened plants according to a sewage purification effect and a landscape effect. A winter artificial wetland plant mode has a good sewage purification effect, can operate safely and effectively in the subtropical regions and has certain landscape value.

Description

technical field [0001] The invention relates to the technology of how to screen and configure winter plants in artificial wetlands used for domestic sewage purification in subtropical regions. Background technique [0002] Constructed wetland is a kind of artificially designed and constructed wetland system for sewage treatment. It usually consists of artificial substrate and aquatic plants growing in it. It is a unique water-soil-plant-microbial ecosystem. Its physical, The synergistic effect of chemistry and biology can effectively treat sewage. Compared with traditional activated sludge treatment technology, constructed wetland has the advantages of good pollutant removal effect, strong impact load resistance, low operating cost, and easy maintenance and management, but its disadvantage is that it occupies a large area. Due to the above advantages, constructed wetlands have been widely used at home and abroad. Plants are an important part of constructed wetlands and pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 陈永华吴晓芙陈明利蒋丽娟王平李科林雷电
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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