Renewable unfired filter material and preparation method, application and regeneration method thereof

A filter material and industrial technology, applied in the field of renewable burn-free filter material and its preparation, can solve the problems of difficult processing and high processing cost, and achieve huge economic and social value and good adsorption performance

Active Publication Date: 2019-10-18
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a renewable burn-free filter material and its preparation method, application and regeneration method, which are used to solve the problems of difficult and high processing costs of construction waste, sludge and industrial solid waste

Method used

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  • Renewable unfired filter material and preparation method, application and regeneration method thereof

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preparation example Construction

[0058] The present invention also provides the preparation method of above-mentioned technical scheme filter material, comprises the following steps:

[0059] Mix silicon-aluminum industrial solid waste with construction waste, add alkali activator or sludge for first stirring, then add sludge or alkaline activator and foaming agent for second stirring, and stop stirring after forming a uniform slurry. Stand still to obtain filter material.

[0060] The preparation method of filter material more specifically comprises:

[0061] Mix silicon-aluminum industrial solid waste with construction waste, add alkali activator for first stirring, then add sludge and foaming agent for second stirring, stop stirring after forming a uniform slurry, let stand, and obtain filter material; or

[0062] Mix silicon-aluminum industrial solid waste with construction waste, add sludge for first stirring, then add alkaline activator and foaming agent for second stirring, stop stirring after forming...

Embodiment 1

[0091] The present embodiment carries out the preparation of ceramsite filter material, and preparation raw material is: the mixture of silico-aluminum industrial solid waste is 30 parts of fly ash, 20 parts of metakaolin and 50 parts of cinder, and alkali activator is 50 parts of water glass (water glass It is the aqueous solution of sodium silicate, the modulus is 3.2, the content is 47wt%, the Baume degree is 45°) and 10 parts of sodium hydroxide (analytical pure) mixture, the construction waste is the waste concrete produced by the demolition of old houses in a community in Guangzhou A total of 25 parts of blocks and waste bricks, the sludge is 50 parts of sludge from a water purification plant in Baiyun District, Guangdong (the sludge composition is as shown in Table 1), and the blowing agent is 2 parts of hydrogen peroxide (content is 30wt%, analytically pure), The mass ratio of silicon-aluminum industrial solid waste, alkali activator, construction waste, sludge and blow...

Embodiment 2

[0106] This embodiment carries out the preparation of spherical filter material, and the preparation raw material is the mixture of 20 parts of sulfur-fixed ash, 20 parts of carbide slag, 15 parts of slag and 45 parts of metakaolin for the preparation of silicon-aluminum industrial solid waste, and the alkali activator is 60 parts of water. A mixture of glass (modulus 3.3, content 37wt%, Baume degree 40°) and 12 parts of potassium hydroxide (analytically pure, content > 90%), construction waste is the waste produced by the excavation of urban roads in the suburbs of Guangzhou City. There are 40 parts of concrete blocks and slag, 60 parts of sludge from a water supply plant in Guangzhou (water content 95%), and 4 parts of sodium bicarbonate as foaming agent. The mass ratio of silicon-aluminum industrial solid waste, alkali activator, construction waste, sludge and blowing agent is 100:72:40:60:4. In kg as the unit, 100kg of silicon-aluminum industrial solid waste, 72kg of alkal...

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Abstract

The invention belongs to the technical field of resource reuse, and particularly relates to a renewable unfired filter material and a preparation method, application and regeneration method thereof. The invention provides a filter material, which is mainly prepared from the following components: sal industrial solid waste, construction waste, sludges, alkali activators and foaming agent; the sal industrial solid waste is selected from one or more kinds of flyash, metakaolin, solid sulfur ash, coal gangue, cinder, slag, zeolite slag, red mud, waste gypsum, desulfurization ash, carbide slag andindustrial dust; the construction waste is selected from one or more kinds of waste concrete blocks, waste cement mortar, crushed stones, waste slag soil, waste bricks and waste tiles. According to the renewable unfired filter material and the preparation method, application and regeneration method thereof, the consumption of the construction waste, the sludge and the industrial solid waste is realized simultaneously, and the resource utilization of the construction waste, the sludge and the industrial solid waste is achieved, and great economic and social values are brought.

Description

technical field [0001] The invention belongs to the technical field of resource reuse, and in particular relates to a regenerated burn-free filter material and its preparation method, application and regeneration method. Background technique [0002] With the continuous deepening of the modernization process, buildings are a symbol of the city and the improvement of living standards, and people's demand for buildings continues to increase. Therefore, construction projects have been carried out in various places in recent years, and the generation rate and quantity of construction waste have also increased rapidly. . Construction waste refers to the waste residue, waste bricks, waste tiles, waste concrete, cement mortar and a small amount of wood, glass, steel, etc. generated in the process of new construction, existing building reconstruction and demolition of dangerous old buildings. According to statistics, the total amount of urban construction waste in my country is 30%...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/02B01J20/20B01J20/16B01J20/12C02F1/28B01J20/30B01D39/06C02F101/10C02F101/16C02F101/20
CPCB01D39/06B01D2239/10B01J20/02B01J20/041B01J20/045B01J20/10B01J20/103B01J20/12B01J20/16B01J20/20B01J2220/4806B01J2220/4875B01J2220/4887C02F1/281C02F2101/105C02F2101/16C02F2101/20C04B28/006C04B18/0427C04B18/16C04B18/0418C04B18/08C04B14/041C04B18/10C04B12/04C04B22/062C04B22/068C04B38/02C04B18/062C04B18/0481C04B22/10
Inventor 蒋树贤李宇峰
Owner GUANGDONG UNIV OF TECH
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