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Iron-carbon micro-electrolysis composite filler based on wetland plant residues and preparation method of iron-carbon micro-electrolysis composite filler

An iron-carbon micro-electrolysis, wetland plant technology, applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc. Problems such as poor denitrification of water bodies and the addition of wetland systems to reduce sewage treatment costs, low production costs, and good treatment effects

Pending Publication Date: 2022-05-27
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the lack of carbon sources, ecological treatment facilities such as vertical green walls, roof green tanks, and artificial wetlands have poor denitrification effects on water bodies with low carbon-to-nitrogen ratios.
Adding carbon sources as electron donors for denitrification can significantly improve the efficiency of denitrification, but it will increase the CO in wetland systems. 2 、CH 4 and other greenhouse gas emissions are very inconsistent with my country's major national strategic needs for carbon emission reduction

Method used

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  • Iron-carbon micro-electrolysis composite filler based on wetland plant residues and preparation method of iron-carbon micro-electrolysis composite filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of an iron-carbon micro-electrolysis composite filler based on wetland plant residues, characterized in that it comprises the following steps:

[0027] Step 1. Combine the skeleton material (the skeleton material is a soil skeleton material, and at least one of clay, bentonite and kaolin can be used) and the wetland plant residue (the wetland plant residue is the calamus, reed and cattail residues); at least one) were crushed to 10 mesh, and then screened through a sieve with an aperture of 2.0 mm;

[0028] Step 2, pulverize the reducing iron powder to 200 mesh, and then carry out the screening operation through a sieve with an aperture of 0.075 mm;

[0029] Step 3, mixing the skeleton material, wetland plant residue and reducing iron powder obtained in step 1 and step 2 in a ratio of 1:1:1 to form a mixed raw material;

[0030] Step 4. Sodium carboxymethyl cellulose is prepared into an aqueous solution of 5‰ to form a binder;

[0031] Step 5. The...

Embodiment 2

[0037] A preparation method of an iron-carbon micro-electrolysis composite filler based on wetland plant residues, its raw materials and specific steps are the same as in Example 1, and the difference is only in that in step 3, the skeleton material, the wetland plant residues and the reducing iron powder press 2: The ratio of 2:1 is mixed to form a mixed raw material.

Embodiment 3

[0039] A preparation method of an iron-carbon micro-electrolysis composite filler based on wetland plant residues, its raw materials and specific steps are the same as those in Example 1, and the difference is only in that in step 3, skeleton material, wetland plant residues and reducing iron powder are pressed according to 3: The ratio of 2:1 is mixed to form a mixed raw material.

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Abstract

The invention discloses and relates to an iron-carbon micro-electrolysis composite filler based on wetland plant residues. The iron-carbon micro-electrolysis composite filler is prepared from a framework material, the wetland plant residues and reducing iron powder through a series of working procedures of crushing, sieving, mixing and bonding, anaerobic high-temperature calcination and the like. By the adoption of the scheme, the defects of an existing wetland plant residue resourceful treatment technology are overcome, the iron-carbon micro-electrolysis composite filler based on the wetland plant residues is provided, the preparation cost is low, the treatment effect is good, and the iron-carbon micro-electrolysis composite filler based on the wetland plant residues has the advantages that the wetland plant residues are utilized in a resourceful mode; the porous carbon has the advantages of high porosity, large specific surface area, high electron transfer rate and the like, so that the sewage treatment efficiency of ecological treatment facilities such as vertical greening walls, roof greening grooves, constructed wetlands and the like can be improved, and the sewage treatment cost is reduced; meanwhile, the invention provides a manufacturing method of the iron-carbon micro-electrolysis composite filler based on the wetland plant residues.

Description

technical field [0001] The invention relates to the technical field of environmental engineering solid waste recycling and water treatment, in particular to an iron-carbon micro-electrolysis composite filler based on wetland plant residues and a preparation method. Background technique [0002] At present, wetland restoration technology has become a common method to improve the quality of surface water environment around the world. With the continuous increase of wetland construction area, a large number of wetland plant residues are produced every year. The existing technology cannot meet the treatment and disposal of the increasing wetland plant residues, which is easy to cause secondary pollution and is not conducive to the carbon emission reduction of the wetland system. How to effectively deal with and dispose of wetland plant residues and avoid secondary pollution of water bodies caused by their in-situ stacking has become one of the key factors affecting the sustaina...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/46104Y02W10/10
Inventor 吴苏清陈琪范春贞郑向勇赵敏金展贝克王芝权刘仁兰汤烨金华长华皖婷胡雯茜周铖杨璞
Owner WENZHOU UNIVERSITY