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Method for reducing content of phenol in water through unburnt carbon in solid waste fly ash

A solid waste and fly ash technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of high cost of phenol-containing wastewater and harsh operating conditions, and achieve low cost and easy raw materials Obtained, simple operation effect

Inactive Publication Date: 2016-12-21
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for reducing phenol content in water by using unburned coal in solid waste fly ash to solve the current problems of high cost and harsh operating conditions for treating phenol-containing wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A method for reducing phenol content in water by using unburned coal in solid waste fly ash, 200 milliliters concentration of 160 mg / liter phenol aqueous solution is tested for removal of phenol. A fly ash with an ash content of 79.12% was passed through a 1 mm sieve to remove large particles of slag, and the product under the sieve was mixed with water to make a pulp with a mass concentration of 25%, and 1600 g / t of diesel oil was added to the pulp, stirred for 6 minutes, and then Add 900 grams / ton of secondary octanol, stir for 4 minutes, and the flotation time is 5 minutes to obtain roughed unburned charcoal; the roughed unburned charcoal is selected under the condition that the concentration is 17%, and the flotation time is 4 minutes to obtain the final Unburned charcoal, the ash content of unburned charcoal is 20.95%. Take 19 grams of unburned charcoal and add it to 200 milliliters of 160 mg / liter phenol aqueous solution and stir evenly, place it on a magnetic sti...

Embodiment 2

[0017] A method for reducing phenol content in water by using unburned coal in solid waste fly ash, 200 ml concentration of 50 mg / L phenol aqueous solution is tested for removal. The ash content of a certain fly ash is 79.12%. Pass through a 1 mm sieve to remove large particles of slag on the sieve. Mix the product under the sieve and add water to make a slurry with a mass concentration of 25%. Add 1600 g / ton of diesel oil to the slurry and stir for 6 minutes , then add 900 grams / ton of secondary octanol, stir for 4 minutes, and the flotation time is 5 minutes to obtain the roughed unburned charcoal; the roughed unburned charcoal is refined under the condition that the concentration is 17%, and the refined time is 4 minutes to obtain The final unburned charcoal has an ash content of 20.95%. Take 6 grams of unburned charcoal and add it to 200 ml of 50 mg / L phenol aqueous solution and stir evenly, place it on a magnetic stirrer for stirring, the stirring intensity is 500 rpm, an...

Embodiment 3

[0024] A method for reducing phenol content in water by using unburned coal in solid waste fly ash, 200 milliliters concentration of 100 mg / liter phenol aqueous solution is tested for removal. The ash content of a certain fly ash is 85.12%. Pass through a 1mm sieve to remove large particles of slag on the sieve. Mix the product under the sieve and add water to make a slurry with a mass concentration of 25%. Add 1200 g / ton of diesel oil to the slurry and stir for 6 minutes , then add 500 grams / ton of secondary octanol, stir for 4 minutes, and the flotation time is 5 minutes to obtain roughing unburned charcoal; roughing unburned charcoal is selected under the condition of 14% concentration, and the flotation time is 4 minutes, The final unburned char was obtained with an ash content of 23.95%. Take 12 grams of unburned charcoal and add it to 200 ml of phenol aqueous solution with a concentration of 100 mg / L and stir evenly, place it on a magnetic stirrer for stirring, the stirr...

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Abstract

The invention provides a method for reducing the content of phenol in water through unburnt carbon in solid waste fly ash. The method includes the steps of fly ash flotation, unburnt carbon stirring and adsorption, centrifugal solid and liquid separation, detection and the like. Industrial solid waste fly ash is subjected to flotation to obtain the foam product, namely unburnt carbon; the unburnt carbon is added into sewage containing phenol to be adsorbed, solid and liquid separation is conducted by means of a centrifugal machine after adsorption is finished, and supernate is purified water obtained after treatment; the unburnt carbon removal rate of unburnt carbon in water is calculated. Fine granularity, large specific surface area and a rich porous structure of unburnt carbon are used for adsorbing and removing phenol in water, accordingly the content of phenol in water is reduced, and the effect of reducing waste by means of waste is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical beneficiation and sewage treatment, and in particular relates to a method for reducing phenol content in water by using unburned charcoal in solid waste fly ash. technical background [0002] The treatment of phenol-containing wastewater mainly adopts three categories: adsorption method, biological method and chemical oxidation method. Among them, the biological method needs to strictly control the operating conditions and the adaptability of microorganisms, which is difficult to operate; the chemical oxidation method requires specific conditions such as high temperature and high pressure, light, sound, catalyst, and light radiation, and the processing cost is high, so it is difficult for industrial application; adsorption The method has the advantages of simple operation method and low pollution. The adsorbents currently used mainly include resin and activated carbon, etc., and their cost is rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F101/34
CPCC02F1/283C02F2101/345
Inventor 任琳珠王李鹏吉鸿安张红许素敏何海涛白守元
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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