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

Method for cleaning spiral-wound membrane for water treatment

A roll membrane, water treatment technology, applied in osmosis/dialysis water/sewage treatment, chemical instruments and methods, membrane technology, etc., can solve the problem that the performance of membrane elements cannot be effectively restored, the service life of membrane elements is affected, and the production load is affected. problems, to achieve the effect of shortening the cleaning time, reducing the consumption of cleaning chemicals, and prolonging the service life

Pending Publication Date: 2022-07-29
内蒙古大唐国际克什克腾煤制天然气有限责任公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for cleaning the roll-type membrane for water treatment, so as to improve the difficulty in cleaning after the fouling of the roll-type membrane in water treatment in the related art, and the performance of the membrane element cannot be effectively restored, which not only affects the service life of the membrane element, but also Affect the production load, resulting in a significant increase in costs

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 cleaning spiral-wound membrane for water treatment
  • Method for cleaning spiral-wound membrane for water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see Figure 1-Figure 2 , the present invention provides a method for cleaning a roll membrane for water treatment, comprising the following steps:

[0039] S1, cleaning liquid configuration, use 1 / 2 of the total produced water of the membrane device to distribute water, and add acid cleaning liquid to the cleaning water tank 3;

[0040] S2. The cleaning liquid is heated, and the cleaning water pump 4 is switched to the cleaning water tank 3 for self-circulation. After the liquid level of the cleaning water tank 3 reaches 1 / 2, the cleaning water pump 4 is started, and the mixed medicine is circulated. The monitoring system monitors that the pH value of the acid cleaning liquid is less than 2, and the cleaning water tank is 3. After the liquid level reaches 100%, the heating system of the cleaning water tank 3 is put into operation according to the actual needs, and the control temperature is lower than 40 ℃, and the heating methods include but are not limited to steam he...

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 spiral-wound membrane cleaning method for water treatment. The spiral-wound membrane cleaning method comprises the following steps: S1, preparing a cleaning solution; s2, heating the cleaning liquid; s3, performing low-flow circulation; s4, performing sectional cleaning, namely performing second-section reverse cleaning on the membrane device, performing first-section reverse cleaning on the membrane device, performing second-section forward cleaning on the membrane device, performing first-section forward cleaning on the membrane device, and observing circulating flow; s5, performing low-pressure flushing, performing valve switching on the first section of the membrane device and the second section of the membrane device, performing flushing by using a low-pressure flushing system, and performing standby application or commissioning after qualification; and S6, discharging the cleaning liquid, namely discharging the effluent of the security filter to a cleaning waste liquid pool, emptying the cleaning liquid in a cleaning water tank and a pipeline to prepare for next cleaning, and when the liquid level in the cleaning waste liquid pool is too high, sending the effluent to other devices for treatment. According to the scheme, a reverse and forward sectional switching cleaning method is adopted, the spiral-wound membrane element water passing channel is cleaned more effectively, and the cleaning effect is improved.

Description

technical field [0001] The invention relates to the technical field of roll membrane cleaning, in particular to a roll membrane cleaning method for water treatment. Background technique [0002] With the increasing shortage of water resources, protecting water sources and controlling water pollution is not only a global problem, but also an urgent task faced by urban and rural areas in my country. The application of the membrane system in water treatment is a key technology for reuse of recycled water, optimization of water quality and reduction treatment, as well as an effective technology for improving the quality of production and domestic water. [0003] In the practical application of water treatment membrane technology, due to different influent water quality conditions, as well as improper control and cleaning operations, the phenomenon of frequent fouling and cleaning is difficult, especially in some industrial wastewater treatment, which is more serious, not only se...

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): B01D65/02B01D69/00C02F1/44
CPCB01D65/02B01D69/00C02F1/44C02F2303/14
Inventor 曹迎军赵永恒张志宝
Owner 内蒙古大唐国际克什克腾煤制天然气有限责任公司
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