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Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method

A technology for the treatment of blue carbon wastewater and wastewater, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Effect

Inactive Publication Date: 2015-09-23
张世文
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for comprehensive utilization of tar, phenol and ammonia in semi-coke wastewater and waste water treatment and recycling method, the main purpose of which is to overcome the technical deficiency of insufficient treatment depth of existing semi-coke wastewater, and simultaneously recover tar, Disadvantages such as technical vacancies for ammonia and phenol

Method used

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  • Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method
  • Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method
  • Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method

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Embodiment 1

[0048] refer to figure 1 , the comprehensive utilization of tar, ammonia and phenol in semi-coke wastewater and the recycling method of wastewater treatment:

[0049] (1) Coarse filtration: Coarsely filter the semi-carbon wastewater with a COD of 10,000 mg / L, ammonia nitrogen of 500 mg / L, total phenols of 1,000 mg / L, a chroma of 10,000 times, and a pH value of 8 through a grid or screen. Remove large particles of debris;

[0050] (2) Recovery of coal tar: add sulfuric acid to the semi-coke wastewater after coarse filtration in step (1) to adjust its pH to 2-6, and then separate by gravity sedimentation to obtain recovered coal tar and detarred wastewater;

[0051] The gravity sedimentation separation is to put the semi-coke concentrated waste water which is adjusted to pH 2-6 by adding sulfuric acid into the gravity separation tank, and then separate into the coal tar in the lower layer and the decoking waste water in the upper layer through gravity sedimentation, and the coa...

Embodiment 2

[0075] refer to figure 1 , the comprehensive utilization of tar, ammonia and phenol in semi-coke wastewater and the recycling method of wastewater treatment:

[0076] (1) Coarse filtration: Coarsely filter the semi-carbon wastewater with a COD of 75000mg / L, ammonia nitrogen of 5000mg / L, total phenols of 6000mg / L, a chroma of 30000 times, and a pH value of 10 through a grid or screen. Remove large particles of debris;

[0077] (2) Recovery of coal tar: add hydrochloric acid to the semi-coke wastewater after coarse filtration in step (1) to adjust its pH to 2-6, and then separate by gravity sedimentation to obtain recovered coal tar and detarring wastewater;

[0078] The gravity sedimentation separation is to pump the semi-coke concentrated waste water adjusted to pH 2 to 5 by adding hydrochloric acid into the gravity separation tank to separate the coal tar in the lower layer and the decoking waste water in the upper layer, and the coal tar in the lower layer is recovered thro...

Embodiment 3

[0100] refer to figure 2 , the comprehensive utilization of tar, ammonia and phenol in semi-coke wastewater and the recycling method of wastewater treatment:

[0101] (1) Coarse filtration: Coarsely filter the semi-carbon wastewater with a COD of 34967mg / L, ammonia nitrogen of 1911mg / L, total phenols of 6000mg / L, a chroma of 30000 times, and a pH value of 8.1 through a grid or screen. Remove large particles of debris;

[0102] (2) Recovery of coal tar: adding sulfuric acid to the semi-coke wastewater after coarse filtration in step (1) to adjust its pH value to 3-5, and then centrifuging to obtain recovered coal tar and detarred wastewater;

[0103] The centrifugal separation is to pump the semi-coke concentrated wastewater whose pH value is adjusted to 3 to 5 by adding sulfuric acid into the centrifuge. After centrifugal separation, the coal tar in the lower layer and the decoking wastewater in the upper layer are recovered. Get coal tar 17.6kg / m 3 , the centrifugal force...

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Abstract

A comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method comprises the following steps: (1) coarse filtering; (2) coal coke recycling; (3) phenol recycling; (4) ammonia recycling; (5) desulfurizing; (6) oxidating; (7) aerobic treatment; (8) anaerobic treatment; (9) secondary aerobic treatment; (10) electrolyzing; (11) membrane disposal or biological aerated filter biochemistry; (12) desalting. Deep disposal of semi coke sewage is performed by a combined disposal process of processes of membrane filtering, coal coke recycling, phenol recycling, ammonia recycling, desulfurizing, oxidating, aerobic treatment, anaerobic treatment, electrolyzing and the like, finally regeneration water is generated by desalting, full disposal of the sewage is realized, sewage pollution is eliminated, and recycle of water resource is realized by sewage regeneration.

Description

technical field [0001] The invention belongs to the field of water pollution control of environmental engineering, and more specifically refers to a method for comprehensive utilization of tar, phenol and ammonia in semi-charcoal waste water and waste water treatment and recycling. Background technique [0002] Semi-coke wastewater is a kind of industrial wastewater that is difficult to treat. It usually has the characteristics of complex composition, high concentration of pollutants, and stable properties. The inorganic pollutants in semi-coke wastewater mainly include sulfide, cyanide, ammonia nitrogen and thiocyanide; the organic pollutants are mainly coal tar substances, and the content of phenolic compounds is very high. In addition, it also contains polycyclic aromatic compounds. Group compounds and heterocyclic compounds containing nitrogen, sulfur, oxygen, etc. [0003] The water quality characteristics of semi-coke wastewater determine its complex hazards. For ex...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02A20/131
Inventor 张世文
Owner 张世文
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