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
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  • 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 te

Method used

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  • 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
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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 ...

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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

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Application Information

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IPC IPC(8): C02F9/14C10C1/02C01C1/10C01C1/242C07C37/68
CPCY02A20/131
Inventor 张世文
Owner 张世文
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