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

Integral composite catalytic oxidation-membrane separation wastewater treatment method and device

A catalytic oxidation and wastewater treatment technology, applied in the direction of oxidized water/sewage treatment, anaerobic digestion treatment, water/sewage treatment, etc., can solve the problems of slow biological treatment speed, unstable effluent, large treatment space, etc., and achieve improvement The effect of catalytic oxidation efficiency, prolonging membrane replacement cycle, and increasing degradation rate

Pending Publication Date: 2017-05-24
中节能工程技术研究院有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biological method has a slow treatment speed, requires a large treatment space, and has high requirements for the influent water, and the effluent water is not stable enough, and has low removal efficiency for some refractory organic substances; the coagulation method has low removal efficiency for hydrophilic pollutants and small molecular organic substances; adsorption The method has certain selectivity to pollutants, and requires the regeneration of adsorbent, so there is a problem of secondary pollution; membrane technology can effectively remove most pollutants in water, but the problem of concentrated water treatment and membrane fouling restricts the technology's application in wastewater treatment. application

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
  • Integral composite catalytic oxidation-membrane separation wastewater treatment method and device
  • Integral composite catalytic oxidation-membrane separation wastewater treatment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A composite catalytic oxidation-membrane separation treatment method for refractory wastewater, see figure 1 , the device used includes a gas-liquid mixer 3, a composite catalytic oxidation reactor 6, an energy field generating device 7, and a ceramic membrane filter 8;

[0039] The liquid outlet of the gas-liquid mixer 3 is connected to the composite catalytic oxidation reactor 6, the energy field generating device 7 is arranged on the composite catalytic oxidation reactor, and the waste water outlet of the composite catalytic oxidation reactor 6 is connected to the ceramic membrane filter 6;

[0040] The ceramic membrane filter is provided with a concentrated water outlet and a standard wastewater outlet, the concentrated water outlet is connected to a circulating water tank 2, and a circulating water tank liquid level gauge 17 is arranged in the circulating water tank; the standard wastewater outlet is connected to a buffer through a backwash pipeline Tank 9 and wat...

Embodiment 2

[0048] The composite catalytic oxidation-membrane separation integrated device of Example 1 is used to treat the biochemical effluent of coking wastewater, the conditions are as follows: the influent flow rate is 10L / h, the raw water CODCr=112mg / L, pH=7.4, the catalyst is powdered activated carbon, and the catalyst is added The volume is 0.5g / L waste water, the output power of the energy field generating device is 25W (ultrasonic power 10W, microwave power 15W), the mixed gas flow rate is 0.2L / min, and enters the ozone / oxygen gas mixture in the gas-liquid mixer. The ozone concentration is 4.3mg / L, and the amount of hydrogen peroxide added is 30mg / L.

[0049] A tubular ceramic membrane is used in the ceramic membrane filter. The average pore size of the ceramic membrane is 0.05μm, the transmembrane pressure difference is 0.3MPa, the air backwash pressure is 0.5MPa, the backwash cycle is 5min, the backwash time is 10s, and the exhaust The time is 5s.

[0050] Applying the devic...

Embodiment 3

[0052] The above composite catalytic oxidation-membrane separation integrated device is used to treat the biochemical effluent of papermaking wastewater, and the conditions are as follows: raw water COD Cr =232mg / L, pH=7.4, SS=115mg / L, before entering the above-mentioned disposal device through coagulation, sedimentation and quartz sand filtration pretreatment, the experimental conditions are as follows: add 500mg / L polyaluminium chloride and 2mg / L polyacrylamide, coagulation reaction 5min, precipitation 30min.

[0053] After filtration, the water quality indicators are as follows: COD Cr =105mg / L, pH=6.9, SS=12mg / L, the wastewater after the above pretreatment enters the composite catalytic oxidation-membrane separation integrated device, the influent flow rate is 10L / h, the catalyst is powdered γ-alumina, and the catalyst is added The volume is 2 / L waste water, the output power of the energy field generating device is 50W (ultrasonic power 25W, microwave power 25W), the flo...

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
The average particle sizeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides an integral composite catalytic oxidation-membrane separation wastewater treatment method which comprises the following steps: S1, introducing wastewater with a suspension catalyst, a mixed gas of ozone and oxygen and hydrogen peroxide into a gas-liquid mixer; S2, introducing the wastewater into a composite catalytic oxidation reactor, and inputting into an energy field through an energy field generation device; S3, filtering the wastewater by using a ceramic membrane filter, performing up-to-standard emission on effluent, emptying the treated gas, and feeding back membrane concentrated water which does not pass through the ceramic membrane filter and contains the suspension catalyst to the step S1. Devices used in the method provided by the invention comprise one gas-liquid mixer which can generate micro-nano bubbles, so that the apparent solubility of ozone and oxygen in the wastewater can be effectively improved, and the catalytic oxidation efficiency can be improved. Due to adoption of the energy field generation device, microwaves, ultrasonic waves, the catalyst and an oxidant have synergic effects in a composite catalytic oxidation reactor, so that the degradation velocity of pollutants by the oxidant can be increased.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a treatment method and a treatment device for refractory waste water. Background technique [0002] With the rapid development of modern industry, especially coal chemical industry, petrochemical industry, fine chemical industry, textile printing and dyeing, pharmaceutical pesticide, pulp and paper making and other industries, various refractory organic wastewaters are increasing, and these wastewaters generally have high pollutant concentration, toxicity It is characterized by large size and poor biodegradability, which seriously pollutes the water environment and endangers human health. After this type of industrial wastewater undergoes conventional physical, chemical and biochemical secondary treatment, the wastewater still contains a large amount of toxic and biodegradable organic pollutants, and further advanced treatment is required to meet discharge standar...

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): C02F9/08C02F9/14
CPCC02F9/00C02F1/36C02F1/302C02F1/001C02F2001/007C02F3/28C02F1/56C02F1/54C02F1/5236C02F1/44C02F3/02C02F1/78C02F1/727C02F1/725C02F1/722
Inventor 李海涛刘杰孔祥西邹结富邱明建
Owner 中节能工程技术研究院有限公司
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