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

A method for removing refractory organic matter in industrial wastewater

A technology for refractory organic matter and industrial wastewater, which is applied in the field of wastewater treatment and can solve the problems of limiting the removal efficiency of activated carbon for refractory organic matter and the complex water quality of industrial wastewater.

Active Publication Date: 2021-09-14
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water quality of industrial wastewater is complex. For example, the macromolecular humus substances carried by the coking wastewater coal itself and the macromolecular biopolymers produced during the biochemical treatment of wastewater exist at the same time, which will block the pores of activated carbon (especially the micropores). Limits the removal efficiency of activated carbon for refractory organic matter

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
  • A method for removing refractory organic matter in industrial wastewater
  • A method for removing refractory organic matter in industrial wastewater
  • A method for removing refractory organic matter in industrial wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Example 1: Biochemical effluent treatment of coking wastewater by oxidation adsorption technology-activated carbon adsorption combined process

[0092] 1. Prepare compound oxidants and compound soluble metal salts

[0093] 1-1, the H 2 o 2 , sodium hypochlorite and sodium persulfate (both pure substances) are mixed uniformly to prepare a composite oxidizer for subsequent use, wherein the H in the composite oxidant 2 o 2 , The molar ratio of sodium hypochlorite and sodium persulfate is 1:0.046:0.043, H 2 o 2 , The mass ratio of sodium hypochlorite and sodium persulfate is 1:0.1:0.3;

[0094] Sodium hypochlorite in composite oxidizer can use potassium hypochlorite, hypochlorous acid to replace; Sodium persulfate can use potassium persulfate, ammonium persulfate to replace; In the embodiment of the present invention, H 2 o 2 , the mol ratio of sodium hypochlorite and sodium persulfate except being 1: 0.046: 0.043, other ratios such as 1: (0.027-0.456): (0.009-0.143)...

Embodiment 1A

[0122] Example 1A: Biochemical effluent treatment of coking wastewater by oxidation adsorption technology-activated carbon adsorption combined process

[0123] 1. Prepare compound oxidants and compound soluble metal salts

[0124] 1-1, the H 2 o 2 , sodium hypochlorite and sodium persulfate are mixed evenly according to the mass ratio of 1:0.2:0.06, and prepared into a composite oxidant for standby use, that is, H in the composite oxidizer 2 o 2 , hypochlorite (ClO - ), persulfate (S 2 o 8 2- ) in a molar ratio of 1:0.091:0.009;

[0125] 1-2, the soluble metal salt FeSO 4 、CuSO 4 , MnSO 4 、CoSO 4 , CaCl 2 and MgSO 4 According to the mass ratio of 100: 0.5: 30: 0.5: 25: 0.1, it is mixed to make a composite soluble metal salt, which is ready for use, that is, Fe in the composite metal salt 2+ 、Cu 2+ , Mn 2+ 、Co 2+ , Ca 2+ , Mg 2+ The molar ratio is 100:0.475:30.2:0.490:34.2:0.127;

[0126] 2. In-situ oxidative degradation-adsorption treatment

[0127] Except...

Embodiment 1B

[0131] Example 1B: Biochemical effluent treatment of coking wastewater by oxidation adsorption technology-activated carbon adsorption combined process

[0132] 1. Prepare compound oxidants and compound soluble metal salts

[0133] 1-1, the H 2 o 2 , sodium hypochlorite and sodium persulfate are mixed evenly according to the mass ratio of 1:0.06:1, and prepared into a composite oxidant for standby use, that is, H in the composite oxidizer 2 o 2 , hypochlorite (ClO - ), persulfate (S 2 o 8 2- ) The molar ratio is 1:0.027:0.143;

[0134] 1-2, the soluble metal salt FeSO 4 、CuSO 4 , MnSO 4 、CoSO 4 , CaCl 2 and MgSO 4 Mix according to the mass ratio of 100:50:0.2:15:0.4:10 to prepare a composite soluble metal salt for future use, that is, Fe in the composite metal salt 2+ 、Cu 2+ , Mn 2+ 、Co 2+ , Ca 2+ , Mg 2+ The molar ratio is 100:47.5:0.201:14.7:0.548:12.7;

[0135] 2. In-situ oxidative degradation-adsorption treatment

[0136] Except that the ratio of the CO...

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

No PUM Login to View More

Abstract

The invention discloses a method for removing refractory (bio)degradable organic matter in industrial wastewater, which comprises adding composite oxidants, composite soluble metal salts and modified activated carbon with well-developed mesopores to the wastewater, and adjusting the pH value of the wastewater to ≥4. Simultaneous in-situ oxidation-adsorption treatment and activated carbon adsorption treatment for refractory organic matter in industrial wastewater. The method of the present invention has high removal efficiency for refractory organic matter in wastewater; and significantly reduces the problem that activated carbon is blocked by macromolecular organic matter, and promotes the adsorption and removal of refractory organic matter by activated carbon; in-situ oxidation-adsorption and activated carbon adsorption assist each other; and The method of the invention has mild process conditions, easy reaction control, low consumption of oxidant and active carbon, short reaction time, and saves the occupied area of ​​equipment.

Description

technical field [0001] The invention relates to a method for treating waste water, in particular to a method for removing refractory organic matter in industrial waste water, and belongs to the field of waste water treatment. Background technique [0002] The effluent of industrial wastewater after biodegradation treatment is the biological effluent of industrial wastewater, in which there are still a large amount of organic matter that is difficult to be biodegraded. We call this type of organic matter difficult-to-biodegradable organic matter. Compared with general urban sewage, the refractory organic matter in industrial wastewater has the characteristics of high content, large chroma and complex composition. Therefore, a water treatment terminal guarantee technology is needed to further remove refractory organic matter to meet the requirements of water reuse or standard discharge. [0003] As a common advanced treatment technology for industrial wastewater, coagulation ...

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 Patents(China)
IPC IPC(8): C02F9/04C02F9/14C02F1/72C02F1/76C02F1/28C02F101/30
CPCC02F1/283C02F1/5245C02F1/66C02F1/72C02F1/722C02F1/76C02F3/1257C02F3/1263C02F3/1268C02F9/00C02F2001/007C02F2101/30
Inventor 杨敏孙光溪张昱田哲丁然高迎新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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