Method for processing and recycling strong brine by membrane desalination process

A technology of concentrated brine and process, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low treatment utilization rate, waste of water resources, etc., and reduce treatment costs , the effect of stable operation

Active Publication Date: 2013-03-20
云南天朗环境科技有限公司
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In view of the low utilization rate of concentrated brine in the membrane desalination process and the large waste of water resources at home and abroad, the present invention provides a method for the treatment and reuse of concentrated brine in the membrane desalination process to improve the utilization rate of water and meet the Increasingly stringent water requirements

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 processing and recycling strong brine by membrane desalination process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The main components of concentrated brine are: pH: 6.5~8.0, conductance ≤20000μs / cm, COD≤300mg / l, TDS≤15000mg / l, turbidity≤50 NTU, SS≤500 mg / l.

[0038] Go through the following steps:

[0039] A. Send the above-mentioned concentrated brine to be treated to the adjustment mixing tank 3 through the delivery pipe 1 and pump 2, adjust the pH value of the concentrated brine to 2.5, and then add H 2 o 2 with Fe 2+ Mix the reagents until the mass concentration of hydrogen peroxide in water is 0.05%, stir and mix, and use sulfuric acid to control the pH of the mixed solution to be 2.5, wherein: H 2 o 2 with Fe 2+ The molar ratio is: H 2 o 2 :Fe 2+ =1:2, Fe 2+ It is conventional ferrous sulfate;

[0040] B, the mixed solution of step A is sent in the microwave waste water treatment equipment 4, in the microwave field that frequency is 915MHz, and power is 5kW, process 5s;

[0041] C. Send the mixed solution processed by the microwave in step B to the sedimentation tan...

Embodiment 2

[0049] The main components of concentrated brine are: pH: 6.5-8.0, conductance ≤20000μs / cm, COD≤300mg / l, TDS≤15000mg / l, turbidity≤50 NTU, SS≤500 mg / l.

[0050] Go through the following steps:

[0051] A. Send the above-mentioned concentrated brine to be treated to the adjustment mixing tank 3 through the delivery pipe 1 and pump 2, adjust the pH value of the concentrated brine to 3.0, and then add H 2 o 2 with Fe 2+ Mix the reagents until the mass concentration of hydrogen peroxide in water is 0.1%, stir and mix, and use hydrochloric acid to control the pH of the mixed solution to be 3.0, wherein: H 2 o 2 with Fe 2+ The molar ratio is: H 2 o 2 :Fe 2+ =1:3, Fe 2+ It is conventional ferrous carbonate;

[0052] B, the mixed solution of step A is sent in the microwave waste water treatment equipment 4, in the microwave field that frequency is 2450MHz, and power is 40kW, process 10s;

[0053] C. Send the mixed solution processed by the microwave in step B to the sedimenta...

Embodiment 3

[0061] The main components of concentrated brine are: pH: 6.5-8.0, conductance ≤20000μs / cm, COD≤300mg / l, TDS≤15000mg / l, turbidity≤50 NTU, SS≤500 mg / l.

[0062] Go through the following steps:

[0063] A. Send the above-mentioned concentrated brine to be treated to the adjustment mixing tank 3 through the delivery pipe 1 and pump 2, adjust the pH value of the concentrated brine to 3.5, and then add H 2 o 2 with Fe 2+ Mix the reagents until the mass concentration of hydrogen peroxide in water is 0.6%, stir and mix, and use nitric acid to control the pH value of the mixed solution to be 3.5, wherein: H 2 o 2 with Fe 2+ The molar ratio is: H 2 o 2 :Fe 2+ =1:4.5, Fe 2+ It is conventional ferrous chloride;

[0064] B, the mixed solution of step A is sent in the microwave waste water treatment equipment 4, in the microwave field that the frequency is 915MHz and 2450MHz, and the power is 150kW, process successively for a total of 20s;

[0065] C. Send the mixed solution proc...

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
turbidityaaaaaaaaaa
turbidityaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for processing and recycling strong brine by a membrane desalination process. The strong brine produced by the membrane desalination process is effectively processed by microwave and oxidation treatment in cooperation with the synergistic effect of multistage filtering, therefore, the recycling rate of the strong brine is greatly improved; and the entire recovery rate is improved to 90%. Compared with other domestic processes, the method disclosed by the invention has the advantages of advanced process, small occupied floor, good effect, low operating cost, low energy consumption and the like, and has highly integrated automatic control and low labor intensity. The method is flexible in process selection, and can flexibly combine the process routes based upon water quality. Thus, the effects of energy conservation and emission reduction are achieved; the social and environmental benefits are obvious; the environmental risk of an enterprise is greatly reduced, and parameters collected by the device in operation have practical significance on treatment of the membrane desalination process for the strong brine.

Description

[0001] technical field [0002] The invention relates to a method for treating and reusing industrial wastewater, in particular to a method for treating concentrated brine in a membrane desalination process so as to improve the recycling rate of the water, and belongs to the technical field of industrial water treatment. Background technique [0003] In recent years, membrane desalination technology has developed rapidly in China and is widely used in various industries. Similarly, membrane desalination technology is also playing an increasingly important role in the field of water treatment, but for membrane desalination technology concentrated brine There is no good way to deal with it. [0004] At present, the most commonly used membrane desalination process concentrated brine treatment methods in the world can be divided into two categories, one is direct discharge, such as discharged into the ocean, surface water, sewage treatment system, etc.; the second is to recyc...

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): C02F9/08
Inventor 曹阳张燕玲毛永泽赵鹏徐祯张林杨林华官金莲
Owner 云南天朗环境科技有限公司
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
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