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

Method for removing acetanilide in wastewater

A technology of acetanilide and waste water, applied in chemical instruments and methods, water pollutants, neutralization water/sewage treatment and other directions, can solve the problems of complex catalytic oxidation equipment, high catalyst cost, unfavorable industrial waste water treatment and wide application, etc. There is no secondary pollution problem and the effect of improving biodegradation performance

Inactive Publication Date: 2018-02-09
EAST CHINA UNIV OF SCI & TECH +1
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the disadvantages of complex catalytic oxidation equipment and high catalyst cost, which is not conducive to the wide application of industrial wastewater treatment.

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 acetanilide in wastewater
  • Method for removing acetanilide in wastewater
  • Method for removing acetanilide in wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Acetanilide (analytical pure) and distilled water were used to prepare simulated wastewater containing acetanilide, wherein the concentration of acetanilide was 500mg / L. Take several parts of simulated wastewater with a volume of 100mL and place them in different 250mL conical flasks, and use solid sodium hydroxide (analytical pure) to dilute the OH of the wastewater - The concentrations were all adjusted to 0.5mol / L. Then, they were all reacted in a water bath at 90°C for 15-120 minutes, and one of the water samples was taken at regular intervals, and finally the pH value of the water sample was adjusted to about 7 with concentrated sulfuric acid. The results are shown in Table 1.

[0026] Table 1

[0027]

[0028] It can be seen from Table 1 that when high-temperature alkaline hydrolysis is used to treat simulated wastewater containing acetanilide, the reaction time has a greater impact on the removal rate of acetanilide by alkaline hydrolysis. When the reaction ...

Embodiment 2

[0030] Acetanilide (analytical pure) and distilled water were used to prepare simulated wastewater containing acetanilide, wherein the concentration of acetanilide was 500mg / L. Take several parts of simulated wastewater with a volume of 100mL and place them in different 250mL Erlenmeyer flasks. Add different amounts of solid sodium hydroxide (analytical pure) to these several parts of simulated wastewater, and then place them in a water bath at 90°C. After reacting for 2 hours, the pH value of the water sample was adjusted to about 7 with concentrated sulfuric acid. The results are shown in Table 2.

[0031] Table 2

[0032]

[0033] It can be seen from Table 2 that when high-temperature alkaline hydrolysis is used to treat simulated wastewater containing acetanilide, as the alkaline hydrolysis system OH - With the increase of concentration, the alkaline hydrolysis removal rate of acetanilide in wastewater gradually increased, but the alkaline hydrolysis rate gradually dec...

Embodiment 3

[0035] Acetanilide (analytical pure) and distilled water were used to prepare simulated wastewater containing acetanilide, wherein the concentration of acetanilide was 500mg / L. Take several parts of simulated wastewater with a volume of 100mL and place them in different 250mL conical flasks, and use solid sodium hydroxide (analytical pure) to dilute the OH of the wastewater - The concentrations were all adjusted to 0.5mol / L. Then alkaline hydrolysis was carried out at room temperature (20°C) and in a water bath at 50°C to 100°C for 2 hours, and finally the pH value of the water sample was adjusted to about 7 with concentrated sulfuric acid. The results are shown in Table 3.

[0036] table 3

[0037]

[0038] It can be seen from Table 3 that when high-temperature alkaline hydrolysis is used to treat simulated wastewater containing acetanilide, as the reaction temperature increases, the alkaline hydrolysis removal rate of acetanilide in wastewater increases gradually, and th...

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 relates to the field of industrial wastewater treatment, in particular to a method for removing acetanilide in wastewater. The method includes steps of regulating the wastewater with theacetanilide by the aid of inorganic alkali under normal-pressure conditions until the wastewater is strongly alkaline; carrying out alkali hydrolysis under high-temperature conditions; regulating a pH (potential of hydrogen) value of the wastewater by the aid of inorganic acid until the wastewater is neutral. The method for treating the wastewater has the advantages that the acetanilide in the wastewater can be efficiently and economically removed by the aid of the method, the biodegradability of the industrial wastewater can be greatly improved (as the acetanilide which is a biologically toxic inhibiting substance is removed), and solid material foundations can be laid for follow-up treatment on the industrial wastewater; the method is simple and feasible, the problem of secondary pollution can be solved by the aid of the method, and the like.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a method for removing acetanilide in wastewater. Background technique [0002] Acetanilide is an important intermediate in organic synthesis, widely used in the synthesis of medicines, dyes, spices, etc. Based on the production process, a large amount of acetanilide remains in industrial wastewater every year, and acetanilide is the main source of chemical oxygen demand (COD) in industrial wastewater. In addition, because acetanilide has a strong inhibitory effect on organisms, it is difficult to carry out biological treatment of industrial wastewater containing acetanilide (industrial wastewater containing acetanilide belongs to refractory biodegradable wastewater). [0003] At present, there are few reports on the treatment methods for acetanilide wastewater, and there are mainly the following: [0004] (1) Highly microporous activated carbon adsorption treatmen...

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): C02F1/66C02F101/38
CPCC02F1/66C02F2101/38
Inventor 丁雷郑舍予贝浩锋赵楠楠韩冰史沐赵一先
Owner EAST CHINA UNIV OF SCI & TECH
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