Comprehensive utilization and treatment recycling method for semi-coke wastewater resources

A technology for semi-coke wastewater and resources, which is applied in the field of comprehensive utilization of semi-coke wastewater resources and treatment, regeneration, and recycling, can solve the problems of insufficient treatment depth of semi-coke wastewater, achieve a high degree of comprehensive utilization, reduce the amount of alkali, and realize treatment and The effect of recycling

Inactive Publication Date: 2015-09-23
张世文
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for comprehensive utilization of semi-coke wastewater resources, treatment, regeneration and recycling, the main purpose of which is to overcome the technical deficiency of insufficient treatment depth of existing semi-coke wastewater and the technical vacancy of simultaneous recovery of tar, ammonia and phenol in semi-coke wastewater and other shortcomings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comprehensive utilization and treatment recycling method for semi-coke wastewater resources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] An example of comprehensive utilization and treatment, regeneration and recycling of semi-coke wastewater resources.

[0054] (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.

[0055] (2) Demulsification: add acid to adjust the pH of the semi-coke wastewater from step (1) to remove large particles to adjust its pH to 2-5, destroy the emulsion of coal tar and water, and precipitate coal tar.

[0056] The acid used is a kind of in sulfuric acid, nitric acid, hydrochloric acid, most is sulfuric acid.

[0057] (3) Recovery of coal tar: the waste water after step (2) demulsification is separated by gravity sedimentation to obtain recovered coal tar and detarred waste water.

[0058] The gravity sedimentation separation is to put the semi-coke wastewater demulsified in...

Embodiment 2

[0084] An example of comprehensive utilization and treatment, regeneration and recycling of semi-coke wastewater resources.

[0085] (1) Coarse filtration: the blue charcoal wastewater with COD of 20,000-75,000 mg / L, ammonia nitrogen of 500-5,000 mg / L, total phenols of 1,000-6,000 mg / L, chroma of 10,000-30,000 times, and pH value of 10 is passed through the grid Grille or sieve for coarse filtration to remove large particles of debris.

[0086] (2) Demulsification: add acid to adjust the pH value to 2-6 to the semi-coke wastewater obtained by coarse filtration in step (1) to remove large particles, destroy the emulsion of coal tar and water, and precipitate coal tar.

[0087] (3) Recovery of coal tar: Centrifuge the waste water after demulsification in step (2) to obtain recovered coal tar and detarred waste water.

[0088] The centrifugal separation is to pump the semi-coke waste water demulsified in step (2) into the centrifuge, and then centrifugally separate it into coal ...

Embodiment 3

[0108] An example of comprehensive utilization and treatment, regeneration and recycling of semi-coke wastewater resources.

[0109] (1) Coarse filtration: Coarsely filter the semi-carbon wastewater with a COD of 35000mg / L, ammonia nitrogen of 2215mg / L, total phenols of 3500mg / L, a chroma of 22000 times, and a pH value of 8.6 through a grid or screen. Remove large particles of debris.

[0110] (2) Demulsification: add acid to adjust the pH value to 3-4 to the semi-coke wastewater obtained by coarse filtration in step (1) to remove large particles, and destroy the emulsion of coal tar and water to precipitate coal tar.

[0111] The acid used is one of sulfuric acid, nitric acid, hydrochloric acid or phosphoric acid, preferably sulfuric acid.

[0112] (3) Recovery of coal tar: Centrifuge the waste water after demulsification in step (2) to obtain recovered coal tar and detarred waste water.

[0113] The centrifugal separation is to pump the semi-coke wastewater demulsified in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a comprehensive utilization and treatment recycling method for semi-coke wastewater resources. The method comprises the steps of (1) coarse filtration; (2) emulsion breaking; (3) tar recycling; (4) phenol recycling; (5) ammonia recycling; (6) oxidization; (7) anaerobic treatment; (8) aerobic treatment; (9) electrolyzation; (10) secondary anaerobic treatment; (11) membrane treatment with an MBR (membrane bioreactor) or biochemical reaction with a biological aerated filter; (12) desalination. According to the method, semi-coke wastewater is deeply treated by a combined treatment process comprising the processes of emulsion breaking, coal tar recycling, dephenolization, deamination, oxidization, anaerobic treatment, aerobic treatment, electrolyzation and the like, and is finally desalinated to generate recycled water, so that the wastewater is completely treated to eliminate wastewater pollution, and moreover, the wastewater is recycled to realize the recycling of water resources.

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, treatment, regeneration and recycling of semi-charcoal wastewater resources. 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 example, ammonia nitr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 张世文
Owner 张世文
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap