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Application and treatment methods of hybrid Wedelia in the treatment of cadmium-polluted water bodies

A technology for wedelium and cadmium pollution, applied in water pollutants, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as poor repair effect of cadmium pollution, secondary pollution of water bodies, difficult implementation of water bodies, etc. Effects of secondary pollution, soil and water conservation, and low cost

Active Publication Date: 2021-07-13
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there are many disadvantages in the above methods. For example, the precipitation method can only form insoluble cadmium hydroxide under alkaline conditions. For acidic water bodies, the repair effect of cadmium pollution is poor; The characteristics of high efficiency, but the price is expensive; the use of grass ash, weathered coal, sulfonated coal and other substitutes has high treatment efficiency, but at the same time of removing cadmium, on the one hand, it involves the problem of secondary pollution of water bodies, and also involves Problems that are difficult to implement for large areas of polluted water bodies

Method used

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  • Application and treatment methods of hybrid Wedelia in the treatment of cadmium-polluted water bodies
  • Application and treatment methods of hybrid Wedelia in the treatment of cadmium-polluted water bodies
  • Application and treatment methods of hybrid Wedelia in the treatment of cadmium-polluted water bodies

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Experimental program
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Effect test

Embodiment 1

[0029] 1.1 Materials and methods

[0030] In this experiment, wedelia and wedelia were used as controls to investigate the cadmium tolerance of hybrid wedelia. The materials used were all collected from the South China Botanical Garden of the Chinese Academy of Sciences (23°10′N, 113°21′E).

[0031] The hybrid Wedelia described in this experiment is a species produced by natural hybridization with Wedelia chinensis as the male parent and Wedelia as the female parent.

[0032] A kind of method for controlling cadmium polluted water body comprises the steps:

[0033] S1. Collect the hybrid Wedelia, remove the leaves, trim the stems into small sections with a length of 10 ± 2cm, each section is guaranteed to have two internodes, and soak the internodes at the lower end of the morphology in ABT rooting powder solution for 4-5h, take out Then transfer to tap water and wait for it to take root and germinate;

[0034] S2, when growing buds and root segments 2-3cm, the hybrid Wedeli...

Embodiment 2

[0051] 2.1.1 Experimental design

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Abstract

The invention discloses the application and treatment method of hybrid wedelia in treating cadmium-polluted water bodies. The hybrid wedelia is a new species produced by crossing wedelia chinensis as the male parent and wedelia chinensis as the female parent. The treatment method includes the following steps: absorbing cadmium using a hybrid wedelia plant floating bed, and the hybrid wedelia plant floating bed is a planting bed where the hybrid wedelia plant is transplanted and planted on the cadmium-polluted water body. The treatment method of the invention has the advantages of low cost, simple operation and remarkable treatment effect, and is suitable for water bodies with a cadmium concentration as high as 200 μmol / L, without secondary pollution, and can maintain water and soil and beautify the environment.

Description

technical field [0001] The invention relates to the field of heavy metal pollution treatment and repair, in particular, the invention relates to the application and treatment method of hybrid wedelia in the treatment of cadmium-polluted water bodies. Background technique [0002] Cadmium is a heavy metal widely used in electroplating industry, chemical industry, electronics industry, nuclear industry and other fields. A considerable amount of cadmium enters water bodies, causing cadmium pollution in water bodies. The pollution of cadmium in water bodies mainly comes from surface runoff and industrial wastewater. Common treatment methods for cadmium-polluted water bodies are precipitation (sulfide, hydroxide), adsorption, electrolysis, ion exchange, membrane separation, bioflocculation and other methods. However, there are many disadvantages in the above methods. For example, the precipitation method can only form insoluble cadmium hydroxide under alkaline conditions. For aci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F101/20
CPCC02F3/32C02F2101/20
Inventor 彭长连古晓倩朱浩强曾令达彭奕阳乐高雷
Owner SOUTH CHINA NORMAL UNIVERSITY
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