Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Phenol wastewater treatment method and preparation method of CuO/ZSM-5 catalyst

A technology of ZSM-5 and treatment method, which is applied in the direction of physical/chemical process catalyst, molecular sieve catalyst, water/sewage treatment, etc., can solve the problem of low mineralization degree, achieve simple and easy method, significant environmental advantages and economic advantages , Response equipment does not require high effect

Active Publication Date: 2016-07-20
合肥沃雨环保科技有限公司
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, studies have found that CuO / PMS (persulfate) heterogeneously catalyzes the degradation of RhodamineB (Rhodamine B) and phenol. The results show that the organic matter treatment effect is good, but the degree of mineralization is not high; activate persulfate with copper oxide For the treatment of p-chloroaniline (p-chloroaniline), it is found that the treatment effect is better than that of Cu 2+ / persulfate or persulfate system alone; use zero-valent iron (ZVI) and CuO to activate persulfate oxidation OrangeG (acid orange G), consider SO 4 -. and OH · The diradical system played an important role, however, there is no related report on the oxidative degradation of phenol by activating the persulfate system with CuO / ZSM-5

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
  • Phenol wastewater treatment method and preparation method of CuO/ZSM-5 catalyst
  • Phenol wastewater treatment method and preparation method of CuO/ZSM-5 catalyst
  • Phenol wastewater treatment method and preparation method of CuO/ZSM-5 catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation of CuO / ZSM-5 catalyst comprises the following steps:

[0033] (1) Adopt commercial ZSM-5 zeolite (silicon-aluminum ratio (SiO 2 / Al 2 o 3 )=18~30; relative crystallinity: Na type>85%; pore size: ), take 150mL of deionized water to dissolve 1.758g of copper nitrate (concentration is 0.0625mol / L), impregnate 5g of dried ZSM-5 powder with this solution, stir in a constant temperature water bath at 60°C for 3h to make ZSM-5 Zeolite and copper nitrate are uniformly mixed to obtain a catalyst precursor;

[0034] (2) The obtained catalyst precursor was first dried at 120°C for 12h, washed and dried with deionized water, then roasted in a muffle furnace at 500°C for 4h, and ground into powder (the same particle size as the original ZSM-5 zeolite powder). CuO / ZSM-5 catalyst (m(Cu) / m(ZSM-5)2) = 12%).

[0035] ZSM-5, CuO / ZSM-5 catalyst scanning electron microscope SEM picture and energy spectrometer EDS picture are shown in the accompanying drawings of ...

Embodiment 2- Embodiment 9

[0041] The treatment method of a kind of phenol waste water is the same as embodiment 1, changes the concentration of phenol waste water, the addition amount of CuO / ZSM-5 catalyst, the addition amount of sodium persulfate, the amount of adding sodium hydroxide are different, specifically see Table 1, other operations Same as Example 1, see Table 1 for phenol conversion rate and COD removal rate after treatment.

[0042] Table 1

[0043]

[0044] The preparation of the CuO / ZSM-5 catalyst used in embodiment 2-4 is specifically:

[0045] A kind of preparation of CuO / ZSM-5 catalyst comprises the following steps:

[0046] (1) Adopt commercial ZSM-5 zeolite (silicon-aluminum ratio (SiO 2 / Al 2 o 3 )=18~30; relative crystallinity: Na type>85%; pore size: ), take 150mL of deionized water to dissolve 1.624g of copper nitrate (concentration is 0.0577mol / L), impregnate 5g of dried ZSM-5 powder with this solution, and stir in a constant temperature water bath at 60°C for 5h to ma...

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 phenol wastewater treatment method and a preparation method of a CuO / ZSM-5 catalyst. Compared with the prior art, CuO is loaded on ZSM by an impregnation method to prepare a composite catalyst with good performance; persulfate is catalyzed to generate sulfate radicals to play stronger oxidizing ability; the treatment cost is reduced, the requirements on reaction equipment are not high, and the method is simple and easy to implement, has high operability and facilitates practical promotion and application; and moreover, the mineralization conversion of pollutants is thorough, the pollutants are converted into corresponding nontoxic substances, secondary pollution is avoided, the highest conversion rate of phenol can reach 99%, and the method has remarkable environmental advantages and economic advantages.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a method for treating phenol wastewater and a method for preparing a CuO / ZSM-5 catalyst. Background technique [0002] With the development of petroleum, chemical, printing and dyeing industries, the pollution of phenol wastewater has become increasingly prominent. Phenol and its derivatives have potential biological toxicity of carcinogenicity, teratogenicity, and mutagenesis. The benzene ring structure is stable and difficult to degrade. It is widely distributed in the environment and has caused serious damage to the water ecological environment. Included in the blacklist of priority pollutants. [0003] At present, the treatment methods of phenol wastewater mainly include: physical and chemical methods (adsorption, extraction, membrane separation, etc.), biological methods (activated sludge, enzyme treatment, immobilized microorganisms, etc.) and advanced oxida...

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
IPC IPC(8): C02F1/72B01J29/46C02F101/34
CPCB01J29/46B01J2229/183C02F1/725C02F2101/345
Inventor 唐海李洋沙俊鹏
Owner 合肥沃雨环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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