Ultraviolet-photochemical compound water purifying process and device capable of realizing synchronous cleaning

A water purification device and photochemical technology, applied in the directions of oxidized water/sewage treatment, light water/sewage treatment, magnetic field/electric field water/sewage treatment, etc. Large odor and other problems, to achieve the effect of convenient operation and maintenance, small footprint and simple structure

Inactive Publication Date: 2014-07-23
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are single-stage ultraviolet and two-stage ultraviolet-ozone joint effects in ultraviolet sterilization devices (first-stage 180-200nm ultraviolet ozone production and secondary 232-238nm ultraviolet / ozone combination), the latter has a certain degree of treatment effect compared with the former Improve the effect, but the ozone concentration may be too high to cause a strong odor in the effluent, and there is no tail gas reuse function, and the energy consumption of the secondary treatment will be too large; the existing automatic ultraviolet cleaning methods generally use mechanical cleaning, chemical cleaning and two Combined cleaning method is the main method, the structure is complicated, it is inconvenient to manufacture and install, and the cost of energy consumption is high, chemical substances will also be introduced, and water treatment needs to be interrupted during cleaning

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
  • Ultraviolet-photochemical compound water purifying process and device capable of realizing synchronous cleaning
  • Ultraviolet-photochemical compound water purifying process and device capable of realizing synchronous cleaning
  • Ultraviolet-photochemical compound water purifying process and device capable of realizing synchronous cleaning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Surface water often contains organic matter such as humus, which can absorb ultraviolet energy and reduce the effect of ultraviolet disinfection. Use tap water to prepare water to be treated containing Escherichia coli and humic acid, wherein the total number of Escherichia coli is 1.2×10 6 CFU / L, humic acid is 2mg / L. The air flow rate is 90L / h, the ozone production amount is 0.66mg / L (mixed gas), and the treatment effects on E. coli and humic acid are shown in Table 1 when the treated water volume is 540L / h and 900L / min. It can be seen that the treated water volume increases by nearly doubled, the pathogenic bacteria inactivation rate and humic acid removal rate changed little.

[0022] Table 1 embodiment 1 processing effect

[0023]

Embodiment 2

[0025] The difference in the amount of air intake leads to the difference in the ozone production rate, the difference in the photooxidation efficiency leads to the difference in the sterilization efficiency, and the initial concentration of pathogenic bacteria also has a certain influence on the inactivation rate. Use tap water to prepare water to be treated containing Escherichia coli and humic acid, wherein the total number of Escherichia coli is 1.5×10 6 CFU / L, humic acid is 2mg / L. The air flow rate is 120L / h, the ozone production is 0.82mg / L (mixed gas), and the treated water volume is 540L / h and 900L / min. The treatment effects on Escherichia coli and humic acid are shown in Table 2. The results showed that increasing the air intake increased the humic acid removal rate; the initial total number of pathogenic bacteria increased, but the inactivation rate was almost unaffected.

[0026] Table 2 embodiment 2 processing effect

[0027]

Embodiment 3

[0029] Due to the presence of particulate matter in surface water, water turbidity often affects UV penetration and disinfection effectiveness. Use tap water to prepare water containing Escherichia coli to be treated, and the total number of Escherichia coli is 9.3×10 5 CFU / L, adjust the turbidity of water with kaolin, respectively 3NTU and 5NTU. The air flow rate is 120L / h, the ozone production is 0.82mg / L (gas mixture), and the treated water volume is 540L / h. The inactivation effect on Escherichia coli is shown in Table 3. The results showed that common surface water turbidity had little influence on the bactericidal efficiency in this reaction system.

[0030] Table 3 embodiment 3 processing effect

[0031]

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

PropertyMeasurementUnit
magnetic flux densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to an ultraviolet-photochemical water treatment process capable of realizing synchronous cleaning with economy, high efficiency and simple operation and a reaction device. The process comprises the following steps of: irradiating the air to generate ozone by utilizing an ultraviolet lamp with the dominant wavelength of 254nm and the secondary wavelength of 185nm (10-15%), forming an air water mixture by virtue of a jet device, enhancing free radicals of ozone by virtue of a high-strength magnetic field, introducing the mixture into a reactor, carrying out a photochemical free radical chain reaction by synergy of two ultraviolet beams with different wavelengths, introducing tail ozone into a water collecting tank by utilizing the air pressure by virtue of a top pipeline, and carrying out ozone oxidation and ultraviolet / ozone photooxidation multi-stage treatment to achieve the aims of inactivating pathogenic bacteria and removing micro pollutants, wherein the air water mixture enters from a tangent line at the bottom of the reactor to impact a spirally ascending air water flow produced by a rotary blade under the synergism of three-dimensional cross flow effect of a high position punched baffle plate and scour the surface of a sleeve, and biological and materialized adhesion and scaling are prevented. The method and the reaction device provided by the invention have good water purifying and synchronous cleaning effects.

Description

technical field [0001] The invention relates to a process and device for highly efficient disinfection and removal of micro-pollutants. It uses single-stage multi-wavelength ultraviolet rays to irradiate air to generate ozone, and uses a magnetic field to strengthen ozone free radicalization and the multi-stage physical and chemical combination of ozone and multi-stage ultraviolet photochemistry. Photochemical action to achieve efficient disinfection and removal of micro-pollutants. Using tangential flow to drive the non-electric power rotating blades to generate spiral upward flow, and cooperate with the three-dimensional cross-flow effect of multi-layer perforated baffles to achieve the effect of mixing water and synchronously washing and cleaning the ultraviolet sleeve. The strong magnetic field magnetization treatment can also change the calcium The crystalline state of substances reduces the risk of scaling, and belongs to the technical field of drinking water treatment. ...

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): C02F1/32C02F1/48C02F1/78
Inventor 强志民史彦伟李梦凯曲久辉刘锐平刘娟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap