Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for carrying out treatment and regenerative cyclic utilization on semi-coke wastewater and recycling resources

A semi-coke waste water and resource recovery technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply conservation, etc., can solve problems such as insufficient treatment depth, achieve high activity, reduce consumption, and achieve The effect of recycling

Inactive Publication Date: 2015-08-26
张世文
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for the regeneration and recycling of semi-coke wastewater and the comprehensive utilization of resources, the main purpose of which is to overcome the technical deficiency of the existing semi-coke wastewater treatment depth and the technical vacancy of simultaneously recovering tar, ammonia and phenol in the 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
  • Method for carrying out treatment and regenerative cyclic utilization on semi-coke wastewater and recycling resources
  • Method for carrying out treatment and regenerative cyclic utilization on semi-coke wastewater and recycling resources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A semi-coke wastewater treatment regeneration recycling and resource comprehensive utilization method.

[0055] (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.

[0056] (2) Membrane filtration: add acid to adjust the pH to 2-6 to the semi-coke wastewater that has been coarsely filtered to remove large particles, and then filter through the membrane to obtain a concentrated solution rich in coal tar and a dialysate that removes coal tar. The concentration ratio is 8 to 10.

[0057] The membrane filtration is ceramic membrane filtration; the pore diameter of the ceramic membrane element of the ceramic membrane filtration system is 50nm; the working pressure is 3-6bar, and the temperature is 15-55°C.

[0058] (3) Recovery of coal tar: The concentrated solution rich...

Embodiment 2

[0080] A semi-coke wastewater treatment regeneration recycling and resource comprehensive utilization method.

[0081] (1) Coarse filtration: Coarsely filter the semi-carbon wastewater with a COD of 75,000 mg / L, ammonia nitrogen of 5,000 mg / L, total phenols of 6,000 mg / L, a chroma of 30,000 times, and a pH of 10 through a grid or screen to remove Large particles of debris.

[0082] (2) Membrane filtration: add acid to adjust the pH to 2-6 to the semi-coke wastewater that has been coarsely filtered to remove large particles, and then filter through the membrane to obtain a concentrated solution rich in coal tar and a dialysate that removes coal tar. The concentration ratio is 3 times.

[0083] The membrane filtration is metal membrane filtration; the metal membrane element of the metal membrane filtration system has a pore size of 30-100nm; the working pressure is 3-6bar, and the temperature is 15-55°C.

[0084] (3) Coal tar recovery: centrifuge the concentrated solution rich...

Embodiment 3

[0108] A semi-coke wastewater treatment regeneration recycling and resource comprehensive utilization method.

[0109] (1) Coarse filtration: Coarsely filter the blue carbon wastewater with COD of 34967mg / L, ammonia nitrogen of 1911mg / L, total phenols of 6000mg / L, chroma of 2000 times, and pH value of 8.1 through a screen to remove large particles sundries.

[0110] (2) Membrane filtration: add acid to adjust the pH to 2-6 to the semi-coke wastewater that has been coarsely filtered to remove large particles, and then filter through the membrane to obtain a concentrated solution rich in coal tar and a dialysate that removes coal tar. The concentration ratio is 5 times.

[0111] The membrane filtration is one of ceramic membrane filtration or metal membrane filtration; the ceramic membrane element of the ceramic membrane filtration system has a pore size of 20-100 nm, a working pressure of 3-6 bar, and a temperature of 15-55°C.

[0112] (3) Coal tar recovery: The concentrated ...

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
Membrane pore sizeaaaaaaaaaa
Apertureaaaaaaaaaa
Current densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for carrying out treatment and regenerative cyclic utilization on semi-coke wastewater and recycling resources. The method comprises the steps of (1) coarse filtration, (2) membrane filtration, (3) coal tar recovery, (4) phenol recovery, (5) ammonia recovery, (6) anaerobic treatment, (7) aerobic treatment, (8) electrolysis, (9) secondary anaerobic treatment, (10) membrane treatment or biochemical reaction of a biological aerated filter, and (11) desalting. According to the method, through a combined treatment process of the membrane filtration, the coal tar recovery, the phenol recovery, the ammonia recovery, the anaerobic treatment, the aerobic treatment, the electrolysis, the desalting and the like, the semi-coke wastewater is deeply treated, so that the resources such as coal tar, phenol and ammonia are recycled, and the treatment cost of the semi-coke wastewater is greatly reduced.

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 treating, regenerating, and recycling semi-charcoal wastewater and resource recycling. Background technique [0002] Semi-coke, also known as semi-coke and coke powder, is an important raw material for ferroalloy, coal gas, and coal chemical production. It is obtained by low-temperature dry distillation (about 650°C) of raw coal. Semi-coke production and gas purification process will produce wastewater, called semi-coke wastewater, which is an industrial wastewater with complex components, high concentration of pollutants, stable properties, poor biodegradability, and extremely difficult to treat. 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. ...

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
IPC IPC(8): C02F9/14C10C1/02C01C1/10C01C1/242C07C37/68
CPCY02A20/131
Inventor 张世文
Owner 张世文
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com