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CN-113663525-B - Movable membrane shearing device capable of effectively controlling membrane pollution and control method

CN113663525BCN 113663525 BCN113663525 BCN 113663525BCN-113663525-B

Abstract

The invention discloses a movable membrane shearing device capable of effectively controlling membrane pollution and a control method thereof, comprising a gear set, a chain and at least one membrane component, wherein the chain is arranged on the gear set, and the membrane component is arranged on the chain through a fixed structure; the outlet pipe of the membrane component is provided with a fluid universal joint. The power device drives the chain to rotate through the gear, so that the membrane component is driven to move, the surface of the filtering membrane generates shearing force, and the deposition of pollutants on the filtering membrane is reduced. The movable shearing device enables the membrane component to always keep filtering under the maximum shearing rate, so that the problem of uneven shearing rate of the vibrating membrane in the application process is solved, the membrane filtering efficiency and the anti-pollution performance of the membrane are further improved, the cleaning of the membrane is reduced, the damage to the membrane is reduced, and the running cost can be saved.

Inventors

  • ZHAO FANGCHAO
  • HAN XIXI
  • LIU CHANGQING
  • BI XUEJUN
  • SHAO ZHUANG
  • LI ZHICHAO

Assignees

  • 青岛理工大学

Dates

Publication Date
20260512
Application Date
20210906

Claims (16)

  1. 1. A movable film shearing device capable of effectively controlling film pollution is characterized by comprising a gear set, a chain and at least one film component, wherein, The chain is arranged on the gear set, and the membrane component is arranged on the chain through a fixed structure; A fluid universal joint is arranged on an outlet pipeline of the membrane component; the included angle between the filtering membrane and the chain in the membrane component is 0-60 degrees; the outlet of each membrane component is connected with a membrane water outlet branch pipe, each membrane water outlet branch pipe is connected with a membrane water outlet main pipe, and the water outlet of the membrane water outlet main pipe is provided with the fluid universal joint; the membrane component is arranged on the chain through a connecting and fixing plate; The membrane water outlet is connected with a membrane water outlet branch pipe, the membrane water outlet branch pipe is distributed in a hollow connecting and fixing plate and is connected with a membrane water outlet main pipe, the membrane water outlet main pipe is arranged on the connecting and fixing plate along the direction of a chain, the membrane water outlet main pipe is connected end to end by utilizing a tee joint, one end of a fluid universal joint is connected with the water outlet of the membrane water outlet main pipe, and the other end of the fluid universal joint is connected with a rotary water outlet pipe, so that the rotary water outlet pipe can rotate along with a membrane assembly; the pump is fixed on the pump fixing platform, the water sucking port of the pump is connected with the rotary water outlet pipe, the membrane filtration process is completed through the suction of the pump, and the membrane component moves along with the chain in an elliptical shape in the membrane filtration process to generate a shearing action on the surface of the membrane; The transmission chain is fixed with the membrane component fixing grooves through the connecting and fixing plates, the membrane components are fixed in the membrane component fixing grooves, and 1 to 100 membrane component fixing grooves are fixedly connected on each connecting and fixing plate at the same time; The length of each connecting and fixing plate and the number of the transmission chains are determined according to the number and the weight of the membrane assemblies to be installed on each connecting and fixing plate, and the number of the transmission chains is 1 to 50; the membrane components are fixed on the membrane component fixing groove, and the number of the filled flat membrane components is varied from 1 to 10000; The distance between every two membrane components is more than 0.1 cm; the device is fixed in a filter tank, and the membrane component is completely immersed; When the device works, the membrane component is driven to do constant-speed advancing movement; The connecting and fixing plate is perpendicular to the chains and fixed on the chains.
  2. 2. The mobile shear membrane device effective to control membrane fouling of claim 1 wherein: The included angle between the filtering membrane and the chain in the membrane component is 0-30 degrees.
  3. 3. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 1, wherein the gear sets are at least divided into two rows, the number of gears in each row is at least 2, and the gears in each row are arranged on the same gear support column.
  4. 4. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 3, wherein the gears on the two rows of gears are in one-to-one correspondence, and the two gears in one-to-one correspondence are connected through a chain.
  5. 5. The movable membrane shearing apparatus capable of effectively controlling membrane fouling as in claim 4 wherein the number of gears in each row is 1-50.
  6. 6. The movable membrane shearing apparatus capable of effectively controlling membrane fouling as in claim 5 wherein the number of gears in each row is 2-50.
  7. 7. The movable membrane shearing apparatus capable of effectively controlling membrane fouling as claimed in claim 6, wherein the diameter of the gear is 0.01-10m.
  8. 8. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 1, wherein 1-100 membrane module fixing grooves are formed in the connecting fixing plate, and the membrane modules are installed in the membrane module fixing grooves.
  9. 9. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 8, wherein 3-50 membrane module fixing grooves are formed in the connecting fixing plate.
  10. 10. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 9, wherein 5-25 membrane module fixing grooves are formed in the connecting fixing plate.
  11. 11. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 1, wherein the connecting and fixing plate is hollow, and the membrane water outlet branch pipe of each membrane assembly is arranged in the connecting and fixing cavity.
  12. 12. The movable membrane shearing apparatus capable of effectively controlling membrane fouling as recited in claim 11 wherein the membrane water main is disposed around the periphery of the chain.
  13. 13. The movable membrane shearing device capable of effectively controlling membrane pollution according to claim 1, wherein the two sides of the gear are provided with isolation nets.
  14. 14. A control method for effectively controlling membrane pollution, realizing the movable membrane shearing device capable of effectively controlling membrane pollution according to any one of claims 1-13, comprising the following steps: the power device drives the chain to rotate through the gear, so that the membrane component is driven to move, the surface of the filtering membrane generates shearing force, and the deposition of pollutants on the filtering membrane is reduced.
  15. 15. The method of claim 14, wherein the membrane module is moved at a rate of 0.01 to 10 m/s.
  16. 16. The method of claim 14, wherein the power unit is activated prior to filtration to initiate movement of the membrane module prior to filtration.

Description

Movable membrane shearing device capable of effectively controlling membrane pollution and control method Technical Field The invention belongs to the technical field of water treatment, aquatic product and environmental treatment and restoration, and particularly relates to a movable film shearing device capable of effectively controlling film pollution and a control method. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. More and more microfiltration and ultrafiltration technologies are used in water treatment, aquatic products and other fields, and membrane technologies have the advantages of high separation precision, good effluent quality, high treatment efficiency, stability, low energy consumption and the like, but the problem of easy pollution of the filter membrane limits the further popularization of the membrane technologies. The anti-pollution capability of the membrane is improved, the filtering efficiency is improved, the cleaning frequency of the membrane is reduced, and the frequency of membrane replacement is reduced, so that the overall manufacturing cost and the running cost of the membrane filtering device are reduced. Therefore, it is highly desirable and meaningful to improve the anti-fouling properties of membranes in filtration. The use of a diaphragm is very effective in improving the anti-fouling ability of the diaphragm by vibration of the diaphragm, and the inventors have found that the shear rate produced by the conventional diaphragm is uneven, and the shear rate produced by the conventional diaphragm gradually increases from zero to a maximum value and then gradually decreases to zero, so that the anti-fouling ability of the diaphragm and the stability of the membrane filtration are weakened. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide the movable shearing membrane device capable of effectively controlling membrane pollution and the control method, and the movable shearing device enables a membrane assembly to be always filtered under the maximum shearing rate so as to solve the problem of uneven shearing rate generated in the application process of a vibrating membrane, further improve membrane filtering efficiency and anti-pollution performance of the membrane, reduce membrane cleaning and damage to the membrane, and further save operation cost. In order to achieve the above object, the present invention is realized by the following technical scheme: in a first aspect, the present invention provides a mobile shear membrane device effective for controlling membrane fouling comprising a gear train, a chain and at least one membrane module, wherein, The chain is arranged on the gear set, and the membrane component is arranged on the chain through a fixed structure; the outlet pipe of the membrane component is provided with a fluid universal joint. In a second aspect, the present invention provides a control method for effectively controlling membrane fouling, comprising the steps of: the power device drives the chain to rotate through the gear, so that the membrane component is driven to move, the surface of the filtering membrane generates shearing force, and the deposition of pollutants on the filtering membrane is reduced. The beneficial effects achieved by one or more of the above embodiments of the present invention are as follows: in the filtration process, the device can slow down membrane pollution through constant-speed travelling movement, so that the membrane cleaning frequency is reduced. In the filtration process, the smaller membrane flux can reduce the filtration efficiency, and the larger flux can easily cause membrane pollution, and the device can effectively prevent pollutants from being deposited on the membrane surface through shearing action generated by constant-speed advancing movement, so that the membrane flux is improved. The device can always keep the maximum shear rate during working, thereby obviously improving the anti-pollution capability and the filtering stability of the membrane. When the device works, only the membrane component is driven to move at a constant speed, and the aqueous solution in the reactor is not driven, so that the working energy consumption can be reduced. Along with the improvement of the advancing speed, the device can improve the retention rate of organic matters in the membrane effluent, thereby reducing the subsequent water treatment cost. Drawings The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. FIG. 1 is a front view of a mobile shear membrane device according to one or more embodiments of the invention; FIG. 2 is a top view of a moving sh