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A kind of zeolite ceramsite prepared by using coal gangue and construction waste and its preparation technology

A technology for construction waste and coal gangue, which is applied in applications, household appliances, ceramic products, etc., can solve the problems of difficult solid-liquid separation, inability to effectively remove heavy metal pollutants, and limit the removal effect and rate of pollutants in water, so as to alleviate the environment. Harmful, high value-added resource utilization effect

Inactive Publication Date: 2015-12-09
INNER MONGOLIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical and chemical properties of the current ceramsite fillers limit its removal effect and rate of pollutants in water, and it cannot effectively remove heavy metal pollutants that are more harmful to the environment in water bodies. Therefore, the current application of ceramsite filter materials in wastewater treatment Limited to simple filtration or biofilms
[0004] Zeolite is an inorganic porous material with a large specific surface area, adsorption capacity, and ion exchange capacity. It has been applied to a certain extent in the process of wastewater treatment. However, most of the synthetic zeolites are zeolite powders. Solid-liquid separation brings some difficulties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 1 kg of construction waste and 0.5 kg of coal gangue, and use a crusher to crush the construction waste and coal gangue into particles with a diameter of less than 3 cm. Put the construction waste and coal gangue particles into the ball mill, run it at 300 rpm for 15 minutes, and take out the obtained mixed powder. Mix the powder, rice husk ash, and water in a weight ratio of 20:1:3, and stir evenly to make a slurry. The slurry is made into balls with a diameter of 10-15mm by using a ball forming disc. The pellets are put into a muffle furnace for sintering, the sintering temperature is 1000°C, and the temperature is kept for 10 minutes. Put the obtained construction waste and gangue ceramsite into a closed heatable reaction kettle, and add NaOH solution with a concentration of 1mol / L, and the solid-liquid ratio is 1 / 5. The solid-liquid mixture in the kettle was stirred for 3 minutes, then the reaction kettle was heated to 100° C., and kept at this temperature fo...

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Abstract

The invention discloses zolite ceramic prepared by utilizing coal gangue and construction waste and a preparation technology thereof. Construction waste and coal gangue are taken as main raw materials, and technological means such as sintering, hydro-thermal processing and the like are utilized for preparing the zeolite ceramic filter material. The technology comprises two key points: 1, sintering construction waste and coal gangue to form an internally-porous ceramic particle material; and 2, performing alkali hydro-thermal processing, so as to change the surfaces of the ceramic particles into a zeolite structure. The prepared porous biological filter material has a multi-stage pore structure and has the density close to the density of water. The prepared porous biological filter material is applicable to technologies of aeration biological filter tanks, oxidation tanks and the like in field of sewage processing, and also has functions of biofilm colonization, adsorption and removal of heavy metal ions, and the like.

Description

technical field [0001] The invention relates to a composite pore structure zeolite ceramsite filter material with construction waste and coal gangue as the main raw materials and a preparation method thereof, which simultaneously includes high value-added resource utilization technology of construction waste and coal gangue, and belongs to environmental functional materials and solid waste The field of comprehensive utilization of resources. The zeolite ceramsite filter material is a multi-functional, high-performance porous water treatment biological filler, which belongs to a new type of environmental functional material. This product is suitable for the treatment of wastewater containing multiple pollutants (heavy metals, BOD, ammonia nitrogen, total phosphorus). This product has the advantages of large specific surface area and high adsorption performance, especially for the control of sudden pollution sources. Background technique [0002] With the rapid take-off of C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/02B01J20/18B01J20/28B01J20/30C02F3/10C02F3/00C04B38/00
CPCY02W10/15Y02W10/10
Inventor 王川贾志斌刘崎峰赵玲刘东伟卓义
Owner INNER MONGOLIA UNIVERSITY
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