Adsorbent for metal ions in soil of constructed wetland

A technology of metal ions and artificial wetlands, applied in the restoration of polluted soil, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of heavy metal toxicity, living health and environmental safety, etc., to achieve The effect of maintaining ecological balance, low cost, and reducing migration

Inactive Publication Date: 2018-11-16
JIANGSU DONGZHU LANDSCAPE CONSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the toxicity of heavy metals is relatively high, which ...

Method used

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  • Adsorbent for metal ions in soil of constructed wetland

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] An adsorbent for metal ions in constructed wetland soil, which is formed by mixing the following A, B and lignosulfonate in a ratio of A:B:lignosulfonate mass ratio of 1:4:2.5;

[0027] Among them, the materials in Group A are citrus, tangerine, tangerine, kumquat, tangerine, tangerine, lemon, grapefruit, and pomelo peel extracts;

[0028] Group B materials are modified attapulgite, and the modified attapulgite contains the following components in parts by weight:

[0029] Natural attapulgite 20 parts

[0030] 3.5 parts of silane coupling agent

[0031] 0.5 parts of polyaspartic acid.

Embodiment 2

[0033] An adsorbent for metal ions in constructed wetland soil, which is formed by mixing the following A, B and lignosulfonate in a ratio of A:B:lignosulfonate mass ratio of 1:4:2.5;

[0034] Wherein, the material of group A is citrus, tangerine, tangerine peel extract;

[0035] Group B materials are modified attapulgite, and the modified attapulgite contains the following components in parts by weight:

[0036] Natural attapulgite 22 parts

[0037] Silane coupling agent 2 parts

[0038] 1 part polyaspartic acid.

Embodiment 3

[0040] An adsorbent for metal ions in constructed wetland soil, which is formed by mixing the following A, B and lignosulfonate in a ratio of A:B:lignosulfonate mass ratio of 1:4:2.5;

[0041] Wherein, group A material is grapefruit peel extract;

[0042] Group B materials are modified attapulgite, and the modified attapulgite contains the following components in parts by weight:

[0043] Natural attapulgite 26 parts

[0044] 5.5 parts of silane coupling agent

[0045] Polyaspartic acid 2 parts.

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Abstract

The invention provides an adsorbent for metal ions in soil of constructed wetland. The adsorbent is formed by mixing A, B and lignosulfonate in the mass ratio being 1:4:2.5, wherein the material A isa citrus peel extract; the material B is modified attapulgite comprising components in parts by weight as follows: 20-30 parts of natural attapulgite, 2-8 parts of a silane coupling agent and 0.5-2 parts of polyaspartic acid. The adsorbent for metal ions in soil of the constructed wetland can improve the adsorption capacity of the wetland soil for metal ions, reduce migration of metal ions in thesoil to plants or water bodies and maintain ecological balance of the constructed wetland after application. Meanwhile, the preparation method of the adsorbent is convenient to operate, low in cost and suitable for promotion and use, and raw materials are easy to obtain.

Description

technical field [0001] The invention relates to an adsorbent for metal ions in artificial wetland soil. Background technique [0002] Constructed wetland is a semi-ecological sewage treatment system through artificial design and transformation. It is mainly composed of three parts: soil matrix, aquatic plants and microorganisms. Through the synergy of physics, chemistry and biology in the natural ecosystem to achieve Purification of sewage. Constructed wetlands mainly use natural processes such as wetland vegetation, soil and related microbial lag to assist in the treatment of wastewater, which is an effective ecological restoration technology. Specific forms include surface flow constructed wetlands, horizontal subsurface flow constructed wetlands, vertical subsurface flow constructed wetlands and composite vertical flow constructed wetlands. [0003] Soil is one of the main natural resources that human beings rely on for survival, and it is also an important part of the ...

Claims

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Application Information

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IPC IPC(8): B01J20/26C02F3/32B09C1/08
CPCB01J20/12B01J20/262B09C1/08C02F3/32
Inventor 张胜佳倪碧前丁竹泌朱锋华黄晓昕
Owner JIANGSU DONGZHU LANDSCAPE CONSTR
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