CN210457588U - Ultrafiltration system - Google Patents

Ultrafiltration system Download PDF

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Publication number
CN210457588U
CN210457588U CN201921257660.2U CN201921257660U CN210457588U CN 210457588 U CN210457588 U CN 210457588U CN 201921257660 U CN201921257660 U CN 201921257660U CN 210457588 U CN210457588 U CN 210457588U
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ultrafiltration
discharge port
air
water discharge
water
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逯安国
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Hangzhou Zhenshui Fluid Technology Co ltd
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Hangzhou Zhenshui Fluid Technology Co ltd
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Abstract

The utility model provides an ultrafiltration system, including chemical cleaning tank, many ultrafiltration apparatuses and a plurality of gas distribution device that communicate each other. The ultrafiltration apparatus has a raw water inlet, a product water discharge port, and a concentrate water discharge port. The chemical agent cleaning box is communicated with the concentrated water discharge port of each ultrafiltration device. The chemical agents stored in the chemical agent cleaning box respectively enter the ultrafiltration devices from the concentrated water discharge port for chemical cleaning and respectively flow out from the raw water inlets so as to perform back washing on each ultrafiltration device in a segmented manner. The gas distribution devices are arranged at one end of the ultrafiltration equipment where the concentrated water discharge port is located in a one-to-one correspondence manner, and the gas distribution devices are communicated with the interior of the ultrafiltration equipment. Compressed air is introduced into the air distribution device and respectively enters and washes each ultrafiltration device. The adoption of the sectional steam-water combined backwashing mode avoids impurities or pollutants at the front section from being flushed into the ultrafiltration equipment at the rear section, so that the cleaning effect is better, and the cleaning efficiency is improved.

Description

Ultrafiltration system
Technical Field
The utility model relates to a water treatment technical field especially relates to an ultrafiltration system, ultrafiltration system adopts bag filter and ultrafiltration apparatus to separate in proper order, draws, water treatment processes such as purification, adopts multiple modes such as segmentation back flush, air water combination back flush, medicine adding back flush to rinse the maintenance to ultrafiltration apparatus moreover.
Background
Ultrafiltration (UF) is a membrane separation technique that purifies and separates solutions. The ultrafiltration membrane system is a solution separation device which takes ultrafiltration membrane filaments as a filter medium and takes the pressure difference between two sides of the membrane as a driving force. The ultrafiltration membrane only allows the solvent (such as water molecules), inorganic salt and small molecular organic matters in the solution to permeate, and retains suspended substances, colloids, proteins, microorganisms and other macromolecular substances in the solution, thereby achieving the purpose of purification or separation. The inlet water to be treated entering the ultrafiltration equipment is called raw water, and the qualified water quality obtained by ultrafiltration equipment treatment is called produced water; the sewage discharged after the treatment by the ultrafiltration equipment is called concentrated water.
In practical application, a plurality of ultrafiltration devices are connected in series and communicated in sequence in a series and parallel mode in a similar circuit, or a plurality of ultrafiltration devices are firstly grouped and connected in parallel and then connected in series and communicated in sequence, so that raw water is treated for a plurality of times, and the quality of produced water is improved. After the ultrafiltration equipment runs for a period of time, impurities, pollutants and the like attached to the ultrafiltration membrane need to be cleaned regularly. For a plurality of mutually communicated ultrafiltration devices, the ultrafiltration membrane of the ultrafiltration device positioned at the front section is adhered with more impurities and pollutants, and the cleanliness is poor; and the ultrafiltration membrane of the ultrafiltration equipment positioned at the rear section has relatively less impurities or pollutants and relatively better cleanliness. If water is used for sequentially flushing the first (or the first group) of ultrafiltration equipment to the last (or the last group) of ultrafiltration equipment, impurities or pollutants in the ultrafiltration equipment at the front section are easily flushed to the ultrafiltration equipment at the rear section, and more serious membrane pollution is caused to the ultrafiltration equipment with relatively good cleanliness at the rear section, so that the cleaning effect is poor, and the cleaning efficiency is not high.
On the other hand, the impurities, pollutants and the like blocked on the ultrafiltration membrane are washed away by adopting a forward washing mode; that is, during rinsing, the water flow is directed in the direction of the water flow during the original operation of the ultrafiltration device. However, the inventor finds that the positive flushing effect is not good because the gap of the ultrafiltration membrane is small, so that impurities, pollutants and the like attached to the surface of the ultrafiltration membrane are not easy to flush out, and the impurities, the pollutants and the like are easy to flush into the ultrafiltration membrane.
Third, the concentrate side of the ultrafiltration apparatus often has sludge, scale build-up and clogging, which cannot be completely flushed away by conventional clean water flushing. And the water yield is reduced due to the fact that ultrafiltration equipment cannot be cleaned in place, and the service life of the ultrafiltration membrane component is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an ultrafiltration system solves prior art ultrafiltration apparatus cleaning performance not good, washs unclean, causes cross contamination's problem easily.
In order to solve the above problems, the utility model provides an ultrafiltration system, ultrafiltration system includes that chemical washs case, many ultrafiltration apparatuses and a plurality of gas distribution device. All ultrafiltration units are communicated with each other, and each ultrafiltration unit is provided with a raw water inlet, a produced water discharge port and a concentrated water discharge port. Chemical agent is stored in the chemical agent cleaning box, and the chemical agent cleaning box is communicated with the concentrated water discharge port of each ultrafiltration device. When the ultrafiltration membranes of the ultrafiltration equipment are cleaned, the chemical agents stored in the chemical agent cleaning box respectively enter the ultrafiltration equipment from the concentrated water discharge port for chemical cleaning and respectively flow out from the raw water inlets so as to perform back washing on each ultrafiltration equipment in a segmented manner. The gas distribution devices are arranged at one end of the ultrafiltration equipment where the concentrated water discharge port is located in a one-to-one correspondence manner, and the gas distribution devices are communicated with the interior of the ultrafiltration equipment. In the using state, compressed air is introduced into the air distribution device and respectively enters and washes each ultrafiltration device.
According to an embodiment of the present invention, the air distribution device is an arc aeration plate disposed at one end of the concentrated water discharge port of the ultrafiltration apparatus, and the air distribution device is distributed with a plurality of aeration holes.
According to the utility model discloses an embodiment, the gas distribution device includes a plurality of air injection grids that set up in the inside and interval distribution of ultrafiltration apparatus, and each air injection grid all jets towards ultrafiltration apparatus's milipore filter.
According to the utility model discloses an embodiment, jet-propelled grid is one of S type, wave or zigzag.
According to the utility model discloses an embodiment, ultrafiltration system includes motorised valve and air feeder, and air feeder and gas distribution device intercommunication, air feeder are to the gas distribution device air feed, and the motorised valve sets up on the pipeline of air feeder and gas distribution device intercommunication.
According to an embodiment of the present invention, the air supply device is an air pump.
According to the utility model discloses an embodiment, ultrafiltration system still includes pneumatic lining rubber butterfly valve, and pneumatic lining rubber butterfly valve sets up on the intercommunication pipeline of the concentrated water discharge port of chemical agent washing case and ultrafiltration apparatus to control and adjust chemical agent's flow.
According to the utility model discloses an embodiment, ultrafiltration system is still including wasing the water tank, wash water tank and each ultrafiltration apparatus intercommunication.
According to the utility model discloses an embodiment, ultrafiltration system still includes the filter, and filter and each ultrafiltration apparatus's raw water import intercommunication, pending water gets into each ultrafiltration apparatus respectively after filter filtration earlier.
Compared with the prior art, the technical scheme has the following advantages:
the utility model discloses a set up chemical agent and wash the case, chemical agent washs case and each ultrafiltration apparatus's concentrated water discharge port and all communicates for chemical agent can get into respectively and carry out the chemical cleaning and flow from the raw water import in every minute infiltration equipment. In the cleaning process, the flow direction of the chemical agent is opposite to the water flow direction during filtration, namely, the reverse flushing can avoid the problem that impurities or pollutants are flushed into the ultrafiltration membrane in the conventional forward flushing mode; in addition, each ultrafiltration device is independently cleaned in a segmented mode, instead of continuously introducing cleaning liquid for flushing one ultrafiltration device into and cleaning the next ultrafiltration device, so that the problem that impurities or pollutants of the front section of ultrafiltration device are flushed into the rear section of ultrafiltration device, and the rear section of ultrafiltration device is seriously polluted is solved.
The utility model discloses a set up the gas distribution device at each ultrafiltration apparatus, utilize the gas distribution device to let in compressed air and wash ultrafiltration apparatus in to ultrafiltration apparatus, increase the air current and erode cleaning function on the basis of washing, realize that air water combines together the back flush, the cleaning performance is better, improves the cleaning efficiency.
Drawings
FIG. 1 is a schematic diagram of the ultrafiltration system provided by the present invention;
fig. 2 is a schematic structural diagram of an ultrafiltration apparatus of the ultrafiltration system provided by the present invention, wherein the gas distribution device is an arc-shaped aeration plate.
Detailed Description
The following description is only intended to disclose the invention so as to enable any person skilled in the art to practice the invention. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the invention.
As shown in fig. 1, the present invention provides an ultrafiltration system, which comprises a chemical agent washing tank 10, a plurality of ultrafiltration apparatuses 20, and a plurality of gas distribution devices 30.
The chemical agent cleaning tank 10 stores a chemical agent for chemically cleaning the ultrafiltration apparatus 20 to remove organic matter, scales (mainly substances containing calcium and magnesium), impurities, or other contaminants attached to the ultrafiltration membrane of the ultrafiltration apparatus 20.
In this embodiment, the number of the chemical cleaning tanks 10 is two, and the two chemical cleaning tanks 10 are communicated with the ultrafiltration apparatus 20 through pipes. One of the chemical cleaning tanks 10 stores an acidic chemical, and the other chemical cleaning tank 10 stores an alkaline chemical. Thus, one of the chemical agent cleaning tanks 10 can be selectively opened for acid cleaning or alkaline cleaning according to actual needs in application. In addition, two chemical agent wash case 10 can also be used to store two kinds of chemical agents, thereby opens two chemical agent wash cases when needs wash and prepare into cleaning solution with two kinds of different chemical agents according to certain chemical ratio to wash ultrafiltration apparatus 20.
All the ultrafiltration devices 20 are communicated with each other to filter the raw water for a plurality of times, so that the quality of the produced water is improved. Each ultrafiltration unit 20 has a raw water inlet 201, a product water discharge port 202, and a concentrate water discharge port 203.
All ultrafiltration units 20 may be connected to each other in series and in parallel in a similar circuit. Or all the ultrafiltration devices 20 are divided into a plurality of groups, all the ultrafiltration devices 20 in the same group are communicated in a parallel connection manner by similar circuits, and then the ultrafiltration devices 20 in different groups are communicated with each other in sequence in a parallel connection manner by similar circuits.
The chemical agent washing tank 10 is communicated with the concentrated water discharge port 203 of each ultrafiltration apparatus 20 through a pipe. In practical application, one main pipeline is communicated with the chemical agent cleaning tank 10, one end of each of the plurality of branch pipelines is communicated with the main pipeline, and the other end of each branch pipeline is respectively communicated with the concentrated water discharge ports 203 of the ultrafiltration devices 20 in a one-to-one correspondence manner. In this way, when the ultrafiltration membranes of the ultrafiltration apparatus 20 are cleaned by the chemical cleaning method, the chemical stored in the chemical cleaning tank 10 is introduced into each of the ultrafiltration apparatuses 20 through the concentrated water discharge port 203 via the pipeline to be chemically cleaned and is discharged from the raw water inlet 201 of each of the ultrafiltration apparatuses 20, so that each of the ultrafiltration apparatuses is backwashed in stages.
The ultrafiltration system further comprises a pneumatic rubber-lined butterfly valve 40, wherein the pneumatic rubber-lined butterfly valve 40 is arranged on a communication pipeline between the chemical agent cleaning box 10 and the concentrated water discharge port 203 of the ultrafiltration device 20 so as to control and adjust the flow of the chemical agent.
It can be understood that, firstly, when carrying out chemical cleaning, because the chemical agent gets into and flows out from raw water inlet 201 from the concentrated water discharge port 203 of each ultrafiltration apparatus 20, the chemical cleaning rivers flow direction and the normal filterable rivers flow direction of ultrafiltration apparatus are opposite, that is to say, the utility model discloses a to the clean mode of ultrafiltration apparatus 20 back flush, can be better with originally attached to organic matter, the scale deposit (mainly for the material that contains calcium, magnesium), impurity or other pollutant washing off on the milipore filter of ultrafiltration apparatus 20, and can not rush into the milipore filter the inside with impurity or pollutant. Therefore, the problem that impurities or pollutants are easily flushed into the ultrafiltration membrane to cause difficulty in cleaning by adopting forward flushing in the prior art is solved.
Second, the utility model discloses a chemical agent washs case 10 and each ultrafiltration apparatus 20 and all communicates independently, and chemical agent gets into respectively and carries out chemical cleaning in each ultrafiltration apparatus 20 and discharge again. For a plurality of ultrafiltration units 20 which are in communication with one another in succession, this corresponds to a separate chemical cleaning of all sections of the ultrafiltration unit 20 which are located in different sections. The advantage of using the sectional cleaning is that the impurities or pollutants of the ultrafiltration device 20 at the front section can be prevented from rushing into the ultrafiltration device 20 at the rear section, so that the repeated pollution can not be caused, the cleaning efficiency is improved, and the cleaning effect is better.
The gas distribution devices 30 are disposed at one end of the ultrafiltration apparatus 20 where the concentrated water discharge ports 203 are located, in a one-to-one correspondence. The gas distribution device is communicated with the interior of the ultrafiltration device 20. In the use state, compressed air is introduced into the air distribution device 30, and the compressed air enters and washes the respective ultrafiltration membranes of the ultrafiltration devices 20 respectively.
As shown in fig. 2, one of the gas distribution devices 30 is an arc-shaped aeration plate disposed at one end of the ultrafiltration apparatus 20 where the concentrated water discharge port 203 is located. The air distribution device 30 is provided with a plurality of aeration holes, and compressed air washes the ultrafiltration membrane of the ultrafiltration device 20 through the aeration holes, so that the washing force to the ultrafiltration membrane can be increased, and impurities or pollutants tightly attached to the ultrafiltration membrane can be easily washed away.
In another embodiment, the air distribution device 30 includes a plurality of air injection grilles disposed inside the ultrafiltration apparatus 20 and distributed at intervals. Each of the air injection grilles is distributed with a plurality of air injection holes, and each of the air injection grilles injects air toward the ultrafiltration membrane of the ultrafiltration apparatus 20, thereby washing away impurities or contaminants attached to the ultrafiltration membrane. Optionally, the air injection grid of the air distribution device 30 is one of S-shaped, wave-shaped or zigzag-shaped. It can be understood that the air injection grids are arranged in an S shape, a wave shape or a zigzag shape, so that the air injection holes of all the air injection grids are uniformly distributed in a space to wash different positions of the ultrafiltration membrane.
In practical application, the gas distribution device can be used for simultaneously performing gas washing on the ultrafiltration device 20 and liquid washing on the ultrafiltration device 20 by using liquids such as chemical agents, clear water and the like, namely, the gas-liquid combined mode is adopted to perform a steam-water backwashing function on the ultrafiltration device 20 at one end of the concentrated water discharge port 203. This combines the advantages of gas and liquid scouring and more easily scours away impurities or contaminants that are attached to the ultrafiltration membrane.
Further, the ultrafiltration system comprises an electric valve 50 and an air supply device (not shown in the figure), the air supply device is communicated with the air distribution device 30, and the air supply device supplies air to the air distribution device 30. The electric valve 50 is provided on a pipe connecting the air supply device and the air distribution device 30 to control and adjust the amount of air flow. Optionally, the air supply device is an air pump.
The ultrafiltration system further comprises a wash water tank 60, the wash water tank 60 being in communication with the product water discharge 202 of each of the ultrafiltration devices 20. A part of the produced water thus discharged after being treated by all the ultrafiltration apparatuses 20 is introduced into and stored in the wash water tank 60. The produced water stored in the wash water tank 60 may be used for washing the ultrafiltration device.
The ultrafiltration system further comprises a bag filter 70, and the bag filter 70 is communicated with the raw water inlet 201 of each ultrafiltration device 20 through a pipeline. The water to be treated is filtered by the bag filter 70 and then enters the respective ultrafiltration devices 20.
The ultrafiltration system further comprises a water reservoir 80 and a water pump 90, the water reservoir 80 being used for storing water to be treated, such as industrial wastewater, domestic wastewater. Reservoir 780 is in communication with bag filter 70 and water pump 90 is in communication between reservoir 80 and bag filter 70. The water pump 90 delivers the water stored in the reservoir 80 to the bag filter 70 for filtration. In practice, the reservoir 80 may also be constructed underground.
In particular, in the present embodiment, the ultrafiltration system further comprises a transit water tank 100, and the transit water tank 90 is connected between the water storage tank 80 and the water pump 90. And the water storage tank 80 is constructed underground and the transfer water tank 100 is constructed above the ground. The water collected and stored in the water storage tank 80 is transferred to the transfer water tank 100 on the ground, and the water pump 90 transfers the water in the transfer water tank 100 to the bag filter 70 for filtering.
The ultrafiltration system further comprises a bactericide adding device 110, and the bactericide adding device 110 is communicated between the water pump 90 and the bag filter 70. The bactericide adding apparatus 110 stores bactericide therein and can automatically add bactericide into water to be treated to perform preliminary sterilization treatment on the water to be treated.
The ultrafiltration system can be cleaned by three modes of clean water (namely, treated produced water), chemical agent cleaning and gas-water combination. When the ultrafiltration system is cleaned by clean water, the ultrafiltration system can be cleaned in a forward flushing mode or a reverse cleaning mode. For example, the produced water stored in the cleaning water tank 60 may be introduced into each ultrafiltration apparatus 20 through the line a1 for cleaning; clean water may also be introduced into each ultrafiltration unit 20 via line a2 for cleaning. The cleaned water may be discharged through line a 5. The discharge line a5 may be a line connected to the raw water inlet 201 of the ultrafiltration apparatus 20 so that the cleaned water is discharged from the top of the ultrafiltration apparatus 20, as shown in "upper row" in fig. 1. In addition, the discharge line a5 may be a line communicating with the concentrate discharge port 203 of the ultrafiltration apparatus 20 so that the washed water is discharged from the bottom of the ultrafiltration apparatus 20, as shown in the "lower row" of fig. 1.
When the chemical reverse cleaning mode is adopted, the chemicals in the chemical cleaning water tank 10 enter each ultrafiltration apparatus 20 through the pipeline a3 for chemical cleaning. The chemical agent after the cleaning is discharged through the line a4 and recovered.
When the reverse cleaning mode of air-water combination is adopted, while the clear water is introduced into the ultrafiltration device 20, the gas is introduced into the ultrafiltration device 20 through the pipeline A6 and the gas distribution device 30.
It is to be understood by persons skilled in the art that the embodiments of the present invention described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the invention have been shown and described in the embodiments without departing from the principles of the invention, embodiments of the invention may be subject to any deformation and modification.

Claims (9)

1. An ultrafiltration system, comprising:
the system comprises a plurality of ultrafiltration devices, a water tank, a water pump;
the chemical agent cleaning box is used for storing chemical agents and is communicated with the concentrated water discharge port of each ultrafiltration device; when the ultrafiltration membranes of the ultrafiltration equipment are cleaned, the chemical agents stored in the chemical agent cleaning box respectively enter the ultrafiltration equipment from the concentrated water discharge port to be chemically cleaned and respectively flow out from the raw water inlets so as to backwash each ultrafiltration equipment in a segmented manner;
the gas distribution devices are arranged at one end of the ultrafiltration equipment where the concentrated water discharge port is located in a one-to-one correspondence manner, and the gas distribution devices are communicated with the interior of the ultrafiltration equipment; and in a use state, introducing compressed air into the air distribution device, and respectively introducing the compressed air into and flushing each ultrafiltration device.
2. The ultrafiltration system of claim 1, wherein the gas distribution device is an arc-shaped aeration plate arranged at one end of the ultrafiltration equipment where the concentrated water discharge port is located, and a plurality of aeration holes are distributed on the gas distribution device.
3. The ultrafiltration system of claim 1, wherein the gas distribution device comprises a plurality of spaced apart gas injection grilles disposed inside the ultrafiltration apparatus, each of the gas injection grilles facing the ultrafiltration membrane of the ultrafiltration apparatus.
4. The ultrafiltration system of claim 3, wherein the air jet grid is one of S-shaped, undulating, or serrated.
5. The ultrafiltration system of any one of claims 1 to 4, wherein the ultrafiltration system comprises an electrically operated valve and an air supply device, the air supply device is in communication with the air distribution device, the air supply device supplies air to the air distribution device, and the electrically operated valve is arranged on a pipeline through which the air supply device is in communication with the air distribution device.
6. The ultrafiltration system of claim 5, wherein the gas supply device is an air pump.
7. The ultrafiltration system of any one of claims 1 to 4, wherein the ultrafiltration system comprises a pneumatic rubber-lined butterfly valve, which is disposed in a communication conduit between the chemical agent washing tank and the concentrate discharge port of the ultrafiltration device, to control and regulate the flow rate of the chemical agent.
8. The ultrafiltration system of any one of claims 1 to 4, further comprising a wash water tank in communication with each of the ultrafiltration devices.
9. The ultrafiltration system of any one of claims 1 to 4, further comprising a bag filter in communication with the raw water inlet of each of the ultrafiltration units, wherein the water to be treated is filtered through the bag filter and then enters each of the ultrafiltration units, respectively.
CN201921257660.2U 2019-08-05 2019-08-05 Ultrafiltration system Active CN210457588U (en)

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Application Number Priority Date Filing Date Title
CN201921257660.2U CN210457588U (en) 2019-08-05 2019-08-05 Ultrafiltration system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111943376A (en) * 2020-08-11 2020-11-17 广州万佳智能设备有限公司 Ultrafiltration water purification system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111943376A (en) * 2020-08-11 2020-11-17 广州万佳智能设备有限公司 Ultrafiltration water purification system

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