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Novel method for treating surplus ammonia water by coking dedusted coke powder

A technology of coke powder and ammonia water, applied in water/sewage treatment, chemical instruments and methods, heating water/sewage treatment, etc., can solve problems such as high energy consumption, difficult treatment of biochemical wastewater, and raw materials for adsorbents

Inactive Publication Date: 2019-03-15
铜陵泰富特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problems to be solved by the present invention are technical problems such as high energy consumption and equipment blockage in the remaining ammonia distilling process in the prior art, difficult treatment of biochemical wastewater, and treatment of adsorbent raw materials and adsorption waste. The present invention provides a new type of coke powder Applied to the method of residual ammonia water treatment

Method used

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  • Novel method for treating surplus ammonia water by coking dedusted coke powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The specific implementation is as figure 1 In the device process shown, the residual ammonia water of the coking enterprise and the dedusted coke powder collected in the coking production process are sent to the reaction tank, stirred and mixed; the dedusted coke powder is directly sent into the reaction tank by pneumatic conveying, and the particle size Distributed at 0.1-0.5mm, the ratio of residual ammonia water volume to dedusted coke powder mass ratio during adsorption treatment is 40:1 (m 3 / t); the remaining ammonia water after mixed adsorption treatment in the reaction tank is separated by a centrifuge to remove the mixed wet dedusting coke powder in the remaining ammonia water; the remaining ammonia water after centrifugation is sent to the automatic backwash filter; the remaining ammonia water after the filter The ammonia water is sent to the ammonia distillation process.

[0025] After treatment, the removal rate of COD is 35-40%, the removal rate of sulfide...

Embodiment 2

[0027] The specific implementation is as figure 1 In the device process shown, the residual ammonia water of the coking enterprise and the dedusted coke powder collected in the coking production process are sent to the reaction tank, stirred and mixed; the dedusted coke powder is directly sent into the reaction tank by pneumatic conveying, and the particle size Distributed at 0.1-0.5mm, the ratio of residual ammonia water volume to dedusted coke powder mass ratio during adsorption treatment is 40:1 (m 3 / t); the remaining ammonia water after mixed adsorption treatment in the reaction tank is separated by a centrifuge to remove the mixed wet dedusting coke powder in the remaining ammonia water; the remaining ammonia water after centrifugation is sent to the automatic backwash filter; the remaining ammonia water after the filter The ammonia water is sent to the ammonia distillation process.

[0028] After treatment, the removal rate of COD is 35-40%, the removal rate of sulfide...

Embodiment 3

[0031] The specific implementation is as figure 1 In the device process shown, the residual ammonia water of the coking enterprise and the dedusted coke powder collected in the coking production process are sent to the reaction tank, stirred and mixed; the dedusted coke powder is directly sent into the reaction tank by pneumatic conveying, and the particle size Distributed at 1.0-1.5mm, the ratio of residual ammonia water volume to dedusted coke powder mass ratio during adsorption treatment is 70:1 (m 3 / t); the remaining ammonia water after mixed adsorption treatment in the reaction tank is separated by a centrifuge to remove the mixed wet dedusting coke powder in the remaining ammonia water; the remaining ammonia water after centrifugation is sent to the automatic backwash filter; the remaining ammonia water after the filter The ammonia water is sent to the ammonia distillation process.

[0032] After treatment, the removal rate of COD is 30-35%, the removal rate of sulfide...

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Abstract

The invention relates to a novel method for treating surplus ammonia water by coking dedusted coke powder. The method is mainly characterized in that the adsorption effect of dedusted coke powder collected in a production process is fully utilized in the process of treatment of the surplus ammonia water in coking enterprises, so that the objectives of reducing oil content and other pollutant indexes of the surplus ammonia water, improving operation of an ammonia distilling process, solving the problem that an ammonia still and a heat exchanger are easy to block, and reducing the treatment loadof a biochemical treatment station of a coking wastewater treatment terminal facility are achieved. Besides, in combination with the production process of the coking enterprises, the dedusted coke powder produced after adsorption and centrifugation can be used for coal blending, and thus, environmental issues of difficult treatment of hazardous waste and the like in the use of other adsorption materials at present are solved. The treatment method can be used in the coking wastewater treatment industrial production process.

Description

technical field [0001] The invention belongs to the field of coking wastewater treatment, in particular to a method for applying novel coking dust-removing coke powder with clean production characteristics to the treatment of residual ammonia water. Background technique [0002] The composition of biochemical wastewater is complex and contains many aromatic organics, heterocyclic and polycyclic compounds that are difficult to biodegrade. For the treatment of coking wastewater, the most effective treatment method currently recognized in China is to use A 2 The / O method, that is, two stages of biological anaerobic and one stage of biological aerobic process, can greatly reduce COD and ammonia nitrogen. However, according to the investigation, it is difficult to meet the emission standard by strictly following the national emission standard of ammonia nitrogen ≤ 25mg / L (secondary standard in the national standard GB8978-1996). As we all know, the main source of biochemical wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/34C02F101/18C02F101/10
CPCC02F9/00C02F1/001C02F1/04C02F1/26C02F1/281C02F2101/101C02F2101/18C02F2101/345
Inventor 周稳华
Owner 铜陵泰富特种材料有限公司
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