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Water permeable brick capable of removing various pollutants and preparation method thereof

A technology of pollutants and permeable bricks, applied in clay products, other household appliances, roads, etc., can solve the problems of heavy metal overflow, clogging of inorganic particles of adsorbent materials, and disorderly distribution, etc., to extend service life, reduce resistance coefficient, and increase maintenance. effect of cycles

Active Publication Date: 2020-01-14
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing permeable bricks only play the role of simple water filtration, and the longitudinal distribution of material particle gradation is generally from top to bottom, using small particles to large particles, or irregular and chaotic distribution of large and small particles, making the medium The precipitation above the rain cannot pass through quickly, and it is easy to produce stagnant water
It has been documented that the pores of permeable bricks are distributed vertically from large to small, but this method speeds up water filtration and at the same time causes a large amount of pollutants entrained in the rainwater runoff to flow into the soil and cause groundwater pollution, or infiltrate into the rainwater storage tank, especially In the industrial park, the pollutants that may be carried include heavy metals, ammonia nitrogen, orthophosphate, etc. The existing permeable bricks cannot make the filtered water quality meet the water quality standard for irrigation and reuse, and additional treatment is required
[0004] The permeable bricks with adsorption capacity in existing inventions generally add adsorption materials such as activated carbon, zeolite, etc. to the granular aggregates, but the adsorption materials are easily blocked by inorganic particles when the permeable bricks are formed, and the efficiency of heavy metal adsorption in practical applications It is not high enough to achieve sustainable adsorption and removal of heavy metals, and there may be heavy metal overflow problems during the flushing process

Method used

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  • Water permeable brick capable of removing various pollutants and preparation method thereof
  • Water permeable brick capable of removing various pollutants and preparation method thereof
  • Water permeable brick capable of removing various pollutants and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing a permeable brick capable of removing various pollutants, the steps of which are as follows:

[0042] 1) Raw materials are weighed in proportion, 35% of discarded ordinary electromagnetic ceramic tiles, 30% of recycled concrete, 18% of clinoptilolite, 7% of sintering aids, and 10% of iron-aluminum mud for later use;

[0043] 2) Crushing and sieving 65% of the total weight of waste ceramic tiles so that the particle size is less than 1.5mm accounts for more than 90%, take the sieve material and remove the large edges and corners by ball milling, and then mix it with sintering aids to obtain coarse ceramic particle layer raw materials ;

[0044] 3) Continue to crush the remaining materials from the above sieving and the remaining waste ceramic bricks until the particles with a particle size of 0.3-0.5mm account for more than 80%, and then mix them with iron-aluminum mud and sintering aids to obtain a mixed layer of fine ceramic particles iron-alumin...

Embodiment 2

[0049] A method for preparing a permeable brick capable of removing various pollutants, the steps of which are as follows:

[0050] 1) Raw materials are weighed in proportion, 35% of discarded magnesia ceramic bricks, 30% of recycled concrete, 18% of clinoptilolite, 7% of sintering aids, and 10% of iron-aluminum mud for later use;

[0051] 2) Crushing and sieving 65% of the total weight of waste ceramic tiles so that the particle size is less than 1.5mm accounts for more than 90%, take the sieve material and remove the large edges and corners by ball milling, and then mix it with sintering aids to obtain coarse ceramic particle layer raw materials ;

[0052] 3) Continue to crush the remaining materials from the above sieving and the remaining waste ceramic bricks until the particles with a particle size of 0.3-0.5mm account for more than 80%, and then mix them with iron-aluminum mud and sintering aids to obtain a mixed layer of fine ceramic particles iron-aluminum mud raw mat...

Embodiment 3

[0057] A method for preparing a permeable brick capable of removing various pollutants, the steps of which are as follows:

[0058] 1) Raw materials are weighed in proportion, 35% of discarded magnesia ceramic bricks, 30% of recycled concrete, 18% of clinoptilolite, 7% of sintering aids, and 10% of iron-aluminum mud for later use;

[0059] 2) Crushing and sieving 65% of the total weight of waste ceramic tiles so that the particle size is less than 1.5mm accounts for more than 90%, take the sieve material and remove the large edges and corners by ball milling, and then mix it with sintering aids to obtain coarse ceramic particle layer raw materials ;

[0060] 3) Continue to crush the remaining materials from the above sieving and the remaining waste ceramic bricks until the particles with a particle size of 0.3-0.5mm account for more than 80%, and then mix them with iron-aluminum mud and sintering aids to obtain a mixed layer of fine ceramic particles iron-aluminum mud raw mat...

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Abstract

The invention relates to a water permeable brick capable of removing various pollutants and a preparation method of the water permeable brick. The water permeable brick comprises the following raw materials in percentage by mass: 32-36% of waste ceramic bricks, 27-31% of recycled concrete, 16-20% of clinoptilolite, 7-11% of iron-aluminum mud and 6-8% of a sintering aid. The water permeable brick capable of removing various pollutants is divided into four layers from top to bottom, namely a coarse ceramic particle layer, a recycled concrete medium particle layer, a fine ceramic particle iron-aluminum mud mixed layer and a zeolite layer in sequence. According to the invention, the service life of the water permeable brick can be prolonged, the water permeable brick is prolonged in maintenance period, convenient to wash and good in water permeability recovery after washing; meanwhile, the water permeable brick has good water purification effect on rainwater runoff, and infiltrated rainwater can be stored after collection and can be directly used for sprinkling green landscapes, cleaning pavements and the like.

Description

technical field [0001] The invention belongs to the technical field of permeable bricks, and in particular relates to a permeable brick capable of removing various pollutants and a preparation method thereof. Background technique [0002] In urbanization construction, with the enhancement of ecological environmental protection awareness, the rise of sponge city construction has been promoted. The application of permeable paving materials is also becoming more and more extensive. As one of the main permeable paving materials, permeable bricks are used in sidewalks, squares and various garden landscape roads. It can play the role of collecting rainwater to replenish groundwater, and contribute to reducing the pressure on the municipal drainage network and reducing urban waterlogging. [0003] However, most of the existing permeable bricks only play the role of simple water filtration, and the longitudinal distribution of material particle gradation is generally from top to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/32C04B35/19C04B35/64E01C11/22E01C15/00
CPCC04B33/1324C04B33/1328C04B33/32C04B35/19C04B35/64C04B33/1321E01C15/00E01C11/225C04B2235/3267C04B2235/3232C04B2235/3206C04B2235/6562C04B2235/6567C04B2235/96Y02P40/60
Inventor 李孟李泽丰张倩许入义钟敏
Owner WUHAN UNIV OF TECH
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