Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for removing refractory pollutant in water body by using bamboo pretreatment waste gas

A pretreatment, refractory technology, applied in water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of equipment-specific technology promotion, complex treatment technology, etc., to achieve excellent removal effect, overcome The effect of complex equipment, efficient degradation effect

Active Publication Date: 2018-06-19
SICHUAN AGRI UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, the current treatment technologies for refractory water pollutants are complex or based on solid treatment agents.
Although relying on equipment for water treatment has the advantages of scale and automation, the particularity of the equipment makes the promotion of the technology unsuitable.
Although the solid treatment agent has the advantages of quickness and convenience, some solid treatment agents can even be made from waste raw materials, and have the function of "treating waste with waste", but the solid treatment agent also faces difficulties in the subsequent solid waste treatment. Environmental issues that cannot be ignored
More importantly, the existing "waste to waste" solid treatment agent preparation technology still faces the problem of production cost, which makes it face cost pressure when it is used to treat refractory pollutants in wastewater

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 removing refractory pollutant in water body by using bamboo pretreatment waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The column debris is crushed through a 40-mesh sieve to obtain the column debris powder; 8g of the column debris powder is put into the reactor, and 80g of phosphoric acid and hydrogen peroxide mixed solution are added to the reactor at a ratio of 1:10 according to the solid-to-liquid ratio, wherein The mass fraction of concentrated phosphoric acid is 65.0%, the mass fraction of hydrogen peroxide is 7.0%, the temperature of pretreatment is 50 ℃, and the pretreatment time is 4h; The degradation reaction is carried out at 50°C in a closed container (50ml specification) in 7.5ml of water refractory pollutant waste liquid.

[0031] PFOS potassium salt, bisphenol A, atrazine, and tetracycline at a concentration of 100ppm were used as refractory water pollutants, and four corresponding experiments were carried out.

[0032] And based on the change of reaction concentration before and after, the removal rate of pollutants was measured for the above four groups of experiments, ...

Embodiment 2

[0036] Adjust the mass fraction of concentrated phosphoric acid to be 68.0%, the mass fraction of hydrogen peroxide to be 5.0%, and the rest remain consistent with Example 1. The removal rate of 4 kinds of pollutants still reached more than 80%, and the removal rate of bisphenol A was 89.1%.

Embodiment 3

[0038] Adjust the weight of the column dust powder to 10g, the volume of the refractory pollutant waste liquid in the water body to 5ml, and keep the rest consistent with Example 1. The removal rate of 4 kinds of pollutants still reached more than 80%, and the removal rate of bisphenol A was 92.8%.

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 provides a method for removing a refractory pollutant in a water body by using bamboo sawdust pretreatment waste gas. The method comprises the following steps: collecting the waste gas produced in the pretreatment of a bamboo sawdust, introducing the waste gas into a closed container filled with a pollutant liquid waste difficult to degrade in the water body, and degrading and reacting at the temperature of 50-80 DEG C. The method has an excellent effect on removing the common pollutant difficult to degrade in the water body, overcomes the defect of requirement on complicated equipment in the prior art, avoids the defect that the raw material needs to be specially modified in the existing base solidifying treatment technology, achieves the effect of efficient degradation of the refractory water pollutant, fulfills the technical purpose of directly treating wastes through wastes in the true sense, and implements the organic combination of two industries of preparation of bioethanol and wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a method for removing refractory pollutants in water bodies by using bamboo chips to pretreat waste gas. Background technique [0002] my country is a traditional textile country. In recent years, with the request for economic structural transformation, the improvement of textile production waste treatment technology will receive more and more attention. Dyestuff is one of the main pollutants in the textile production process. Its composition is complex, and most of them are biologically toxic and refractory. It is a kind of wastewater that is difficult to treat. [0003] At present, the traditional methods of pollution treatment are adsorption, membrane separation, ozone oxidation and photocatalysis. [0004] However, the current water treatment technology for refractory pollutants (such as perfluorooctane sulfonate potassium salt, bisphenol A, atrazin...

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): C02F1/58C02F101/36C02F101/34
CPCC02F1/58C02F2101/34C02F2101/345C02F2101/36
Inventor 沈飞龙琭璐刘章林王卿向春晓吴孟珂刘太聪曾咏梅张延宗杨刚邓仕槐
Owner SICHUAN AGRI UNIV