Method for absorbing saturated active carbon by in situ regeneration of peroxysulphate

A persulfate and in-situ regeneration technology, applied in filter regeneration, chemical instruments and methods, separation methods, etc., can solve the problems of high transportation costs, large loss of activated carbon, incomplete regeneration, etc., and achieve low cost and less pollution , the effect is obvious

Inactive Publication Date: 2013-07-17
FUDAN UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few successful reports on the biological regeneration of activated carbon. The main disadvantage is that the biological method is only suitable for biodegradable pollutants, but not for non-biodegradable and toxic and harmful organic substances, and the residual final product is adsorbed. On the surface of activated carbon, the regeneration is incomplete; the high-temperature heating regeneration method has a huge loss of activated carbon, usually more than 10%, and the transportation cost is high

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A drinking water plant uses coal-based granular activated carbon as an adsorption treatment process for organic pollutants. After three years of operation, the removal effect of activated carbon on organic matter has been significantly reduced. The removal rate of organic matter has dropped from 85% in the initial use to about 30%. Perform regeneration. During the operation of the activated carbon process, the average value of COD, the characteristic parameter of organic content in raw water, is 3.6mg / L, the highest is 4.9mg / L, and the lowest is 2.0mg / L; the turbidity is 24-45NTU. Raw water belongs to moderate organic pollution water body.

[0020] Take an appropriate amount of adsorbed saturated activated carbon and put it into the regeneration reactor prepared in advance. The reactor is a straight cylinder with a diameter of 30cm and a height of 60m. The water inlet and outlet are set, and the regeneration method of upward flow is adopted. After regeneration according...

Embodiment 2

[0023] A beer company adopted the activated carbon filtration process as an advanced sewage treatment process. After 2 years of operation, the adsorption efficiency of activated carbon on organic matter was significantly reduced, and the removal rate of organic matter was reduced from about 75% in the initial state to 15%. The enterprise's beer wastewater mainly comes from the malt workshop (wheat soaking wastewater), saccharification workshop (saccharification, filtering and washing wastewater), fermentation workshop (fermentation tank washing, filtering and washing wastewater), filling workshop (bottle washing, sterilization wastewater and bottle broken outflow) Beer) and cooling wastewater for production, etc., the sewage treatment adopts the secondary treatment of acidification-SBR method and the tertiary treatment of activated carbon adsorption. The COD of the secondary treatment water is 140-170mg / L. After activated carbon adsorption, the COD concentration of the initial ...

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 belongs to the technical field of environmental protection, and in particular relates to a method for absorbing saturated active carbon by in situ regeneration of peroxysulphate. The method comprises the following step of: generating sulfate ions [S2O8<2>-] and high strength sulfate free radicals [.SO4<2>-] by molecular oxidation or chemical activation of peroxysulphate, wherein the activated product can quickly decompose various saturated organic matters absorbed by active carbon. The method provided by the invention can be widely to drinking water plants or industrial enterprises for purifying water by active carbon for regeneration by active carbon.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for in-situ regeneration and adsorption of saturated activated carbon using persulfate. Background technique [0002] Under the background of the continuous increase of water pollution at home and abroad, activated carbon, as a high-efficiency adsorption material, has been widely used in the advanced treatment process of drinking water. Activated carbon can effectively remove a variety of different organic pollutants from water, but after long-term use, activated carbon continues to reach the state of organic matter adsorption saturation, and needs to be replaced or regenerated in time to ensure the water treatment effect. Activated carbon regeneration methods have been researched and applied at home and abroad. It is mainly divided into three categories: biological method, heating method and chemical method. There are few successful reports...

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 & AuthorityApplications(China)
IPC IPC(8): B01J20/34B01J20/20C02F1/28
Inventor安东
OwnerFUDAN UNIV