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Preparation method and application of modified fly ash adsorbent

A technology of fly ash and adsorbent, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of ecological environment loss, ecological imbalance of water body, etc. Environmentally friendly effects

Pending Publication Date: 2016-11-02
西安亚岱新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the eutrophication of the water body is not controlled in time, it will cause the ecological imbalance of the water body and cause huge losses to the ecological environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Mix 10g water, 10g fly ash and 0.1g Fe 2 o 3 Mix evenly to obtain a muddy mixture; age under natural conditions for 12 hours to obtain a cement-like mixture; make it into columnar particles with a particle diameter of 2mm and a length of 4mm; finally dry for 24 hours under natural conditions; fly ash;

[0020] (2) Mix the treated fly ash and calcium oxide in a weight ratio of 1000:12 to obtain a modified fly ash adsorbent;

[0021] (3) get 10 grams of modified fly ash adsorbents prepared to treat the 2000g phosphorus-containing waste water of 25mg / L to the phosphorus-containing concentration, contact time 1h, measure the phosphorus-containing concentration of the waste water after the treatment by GB 11893-89 as 2.25mg / L, phosphorus removal rate is 91%.

Embodiment 2

[0023] (1) Mix 10g of water, 10g of fly ash and 0.1g of Al 2 o 3 Mix evenly to obtain a muddy mixture; age under natural conditions for 12 hours to obtain a cement-like mixture; make it into columnar particles with a particle diameter of 2mm and a length of 4mm; finally dry for 24 hours under natural conditions; fly ash;

[0024] (2) Mix the treated fly ash and calcium oxide in a weight ratio of 1000:1 to obtain a modified fly ash adsorbent;

[0025] (3) get 10 grams of modified fly ash adsorbents prepared to treat the 2000g phosphorus-containing waste water of 25mg / L to the phosphorus-containing concentration, contact time 1h, measure the phosphorus-containing concentration of the waste water after the treatment by GB 11893-89 as 2.45mg / L, phosphorus removal rate is 81%.

[0026] Compared with the prior art, the modified fly ash adsorbent prepared by the present invention is a resource comprehensive utilization of industrial waste, treating waste with waste, which is benef...

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Abstract

The invention relates to a preparation method and application of a modified fly ash adsorbent. The method is to mix fly ash, transition metal oxides and a certain proportion of adsorption aids. Compared with the prior art, the modified fly ash adsorbent prepared by the present invention is a resource comprehensive utilization of industrial waste, treating waste with waste, which is beneficial to environmental protection, and at the same time opens up opportunities for the resource utilization of fly ash. In addition, the method has a simple process and has a very positive significance for protecting the water environment. It also provides a cheap and effective adsorbent for the treatment of phosphorus-containing wastewater.

Description

technical field [0001] The invention relates to the technical field of solid waste comprehensive utilization and water treatment, in particular to a preparation method and application of a modified fly ash adsorbent. Background technique [0002] Coal is the main energy source in my country, and 76% of electricity is produced by coal. The annual coal consumption reaches more than 400 million tons, accounting for 1 / 3 of the country's raw coal output. Fly ash is an industrial waste produced during coal combustion. On average, the total amount of fly ash produced by power plants in my country is more than 100 million tons per year. At present, the disposal method of fly ash is mainly piled up in ash storage yards, and a large amount of fly ash is discarded, which not only pollutes the environment, but also causes waste of resources. [0003] With the increase of human development and utilization of environmental resources and the acceleration of industrial and agricultural pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/58
Inventor 贾贺雪
Owner 西安亚岱新能源科技有限公司