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Porous adsorption medium for water treatment and preparation method of porous adsorption medium

A porous adsorption and water treatment technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. big effect

Active Publication Date: 2014-05-21
RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art discloses a variety of technical solutions for utilizing silica sand foundry recycled ash, such as the technical solutions for using silica sand dust to prepare proppant, fireproof materials, moisture-proof materials and building stones, etc., but there is no application of it to water Relevant studies or reports dealt with

Method used

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  • Porous adsorption medium for water treatment and preparation method of porous adsorption medium
  • Porous adsorption medium for water treatment and preparation method of porous adsorption medium
  • Porous adsorption medium for water treatment and preparation method of porous adsorption medium

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Ingredients: 75kg of regenerated silica sand foundry ash, 10kg of sludge, 10kg of fly ash, 5kg of activated carbon, and 8kg of mixture of straw and stem and leaf plant debris. Among them, the sludge is taken from the remaining sludge discharged from the sewage biological treatment system of a sewage treatment plant in Beijing; the sieve mesh of the fly ash is 45000-45500 mesh, the fineness is 0.03-0.05mm, and the loss on ignition is not more than 10%, stalks, stems and leaf plant debris passed through a 30-40 mesh sieve.

[0029] The porous adsorption medium described in this example is prepared by the following preparation method:

[0030] (1) Sieve the regenerated ash of 3 μm to 20 μm from the dust collection device of the silica sand regeneration equipment;

[0031] (2) Ingredients, weigh 75kg of silica sand foundry reclaimed ash, 10kg of sludge, 10kg of fly ash, 5kg of activated carbon, and 8kg of a mixture of straw and stem and leaf plant debris, mix and grind;

...

Embodiment 2

[0037] Ingredients: 70kg of regenerated silica sand foundry ash, 5kg of sludge, 5kg of fly ash and 5kg of straw.

[0038] The porous adsorption medium described in this example is prepared by the following preparation method:

[0039] (1) Sieve the regenerated ash of 3 μm to 20 μm from the dust collection device of the silica sand regeneration equipment;

[0040] (2) Ingredients, weigh 70kg of silica sand foundry recycled ash, 5kg of sludge, 5kg of fly ash and 5kg of straw, mix and grind;

[0041] (3) Dosing water into the mixed raw materials, and granulating through the spray granulation tower;

[0042] (4) Roast the wet particles; first preheat and roast at 500 °C for 20 minutes, and then perform high-temperature roasting at 1100 °C for 1 hour;

[0043] (5) After cooling out of the furnace, the finished product is graded and screened, that is, the porous adsorption medium.

[0044]The relevant parameters of the porous adsorption medium obtained in this example are: the re...

Embodiment 3

[0046] Ingredients: 80kg of regenerated silica sand foundry ash, 15kg of sludge, 15kg of fly ash, 10kg of activated carbon, and 10kg of stem and leaf plant debris.

[0047] The porous adsorption medium described in this example is prepared by the following preparation method:

[0048] (1) Sieve the regenerated ash of 3 μm to 20 μm from the dust collection device of the silica sand regeneration equipment;

[0049] (2) Ingredients, weigh 80kg of silica sand foundry recycled ash, 15kg of sludge, 15kg of fly ash, 10kg of activated carbon and 10kg of stem and leaf plant debris, mix and grind;

[0050] (3) Dosing water into the mixed raw materials, and granulating through the spray granulation tower;

[0051] (4) Roast the wet particles; first preheat and roast at 600 °C for 45 minutes, and then perform high-temperature roasting at 1200 °C for 2 hours;

[0052] (5) After cooling out of the furnace, the finished product is graded and screened, that is, the porous adsorption medium....

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Abstract

The invention discloses a porous adsorption medium for water treatment. The porous adsorption medium is prepared from the following raw materials in parts: 70-80 parts of silica sand casting regenerated ash, 5-15 parts of sludge, 5-15 parts of coal ash, 0-10 parts of activated carbon and 5-10 parts of straws or stem plant broken materials. The porous adsorption medium provided in the invention is hard, has the specific gravity of more than 1, is completely sunk into the bottom, is high in porosity and large in specific surface area and suitable for serving as biological stuffing (such as a filling body in a biofilter) in an environmental water treatment technology. Wastes are fully utilized, the porous adsorption medium is successfully applied to environmental protection and management, the waste is changed into a valuable material, and a great contribution is made to beautifying the ecological environment.

Description

technical field [0001] The invention relates to the field of water treatment materials, in particular to a porous adsorption medium for water treatment and a preparation method thereof. Background technique [0002] As we all know, there are more than 25,000 foundry enterprises in my country, and the output of castings has ranked first in the world for many years. Among them, silica sand casting accounts for the vast majority of the foundry industry, which is about 80% to 90%. The recycling and regeneration of waste silica sand will produce a large amount of regeneration. Ash, most enterprises mainly discard it, which is a great waste of recycled ash resources and will cause serious environmental pollution. The utilization of silica sand foundry regenerated ash can not only realize the recycling of resources, but also help protect and manage the environment, thereby contributing to society and benefiting mankind. Therefore, the utilization of silica sand foundry recycled ash...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/08B01J20/06B01J20/28B01J20/30C02F3/00
Inventor 秦升益孙青亮刘志王宏斌
Owner RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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