JP2001062259A - Identification method of membrane cartridge - Google Patents

Abstract

(57) [Problem] To provide a method of identifying a membrane cartridge which can easily grasp the installation history of a membrane cartridge in a state where the membrane cartridge is installed in a membrane separation device. SOLUTION: Code display means 1 for displaying an identification code is provided on an upper end edge of a filter plate 22A of each membrane cartridge 22,
The non-contact code reading means 3 is scanned along the arrangement direction of the plurality of code display means 1 arranged in a row to read the identification code 1 of each membrane cartridge 22, and each membrane cartridge 22 is read by the read identification code 1. And the identification code 1 of each identified membrane cartridge 22
Are displayed in a list in the order in which the membrane cartridges 22 are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a wastewater treatment facility, a combined septic tank, and the like, which contain a large amount of organic matter such as sewage and human waste.
The present invention relates to an immersion type membrane separation device used for treating organic wastewater having a high nitrogen concentration, and to a method for identifying a membrane cartridge for managing a membrane cartridge mounted on the immersion type membrane separation device.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional immersion type separation apparatus. In FIG. 4, the membrane separation device 21
Comprises a plurality of flat membrane cartridges 22 and an air diffuser 23 for ejecting a membrane-cleaning gas from underneath.
It is arranged inside. The case 24 is divided into a membrane case 25 and an air diffuser case 26 to facilitate transportation and maintenance, so that the entire amount of the membrane surface cleaning gas ejected from the air diffuser 23 enters the membrane case 25. Has formed.

[0003] The membrane cartridge 22 has a filter membrane 22B disposed on both surfaces of a rigid filter plate 22A made of ABS resin, and is provided between the filter plate 22A and the filter membrane 22B and the filter plate 22B.
A permeate flow path is formed inside A, and a permeate outlet 22C communicating with the permeate flow path is formed at the upper end edge of the filter plate 22A. Each membrane cartridge 22 has a permeate outlet 22
C is connected to a water collecting pipe 28 via a tube 27 connected to C, 29 is a permeated liquid outlet pipe that communicates with the water collecting pipe 28 to draw out the membrane permeate, and 30 prevents the membrane cartridge 22 from floating. It is a holding plate.

When the membrane separation device 21 is used in an activated sludge treatment facility, the membrane separation device 21 is immersed in an activated sludge mixture in an aeration tank, and aerated air is spouted from a diffuser 23. Organic matter and nitrogen in raw water are treated by activated sludge, and the activated sludge mixture is gravity-filtered by the membrane cartridge 22 with the head in the tank as the driving pressure (a suction pump is installed in the permeate outlet pipe 29). Then, the permeate that has passed through the membrane surface of the membrane cartridge 22 is led out of the tank through the permeate outlet pipe 29 as treated water. At this time, the membrane surface of the membrane cartridge 22 is washed by the bubbles of the aerated air spouted from the air diffuser 23 and the upward flow generated thereby, thereby suppressing the decrease in the separation function and causing the membrane separator 21 to malfunction. Is preventing that.

[0005] The membrane cartridge 22 is obtained by attaching a filtration membrane 22B to a filter plate at the periphery thereof by ultrasonic welding, and usually has a life of about 5 years.
During use, the peripheral portion is lifted by the upward flow of the aerated air, so that the strength of the welded portion is deteriorated, which affects the life of the membrane cartridge. On the other hand, the structure of the filtration membrane 22B itself used for the membrane cartridge 22 is such that the front and back surfaces of the nonwoven fabric forming the base material are coated with an organic polymer-based membrane material, and the membrane material itself also has chemical resistance. Since a material that is excellent and has durability against activated sludge is used, the filtration membrane 22B is unlikely to be damaged before the welded portion.

[0006]

The immersion type membrane separation apparatus having a structure using a membrane cartridge having a flat filter plate as a support as described above can easily take out the membrane cartridge during maintenance and can easily maintain and manage the membrane cartridge. Can be done. Further, unlike a membrane separation apparatus using another membrane, for example, a hollow fiber membrane, the membrane cartridge can be individually repaired or replaced, and a regenerated membrane cartridge can be used secondarily.

For this reason, as the period of use of the immersion type membrane separation device elapses, the replaced new membrane cartridge and the old membrane cartridge coexist. The membrane cartridge can be easily distinguished from a healthy one and a damaged one, but it is difficult to visually confirm the deterioration of the strength of the welded part due to aging, and the history of each membrane cartridge is managed. A method is required.

However, since it is not easy to identify the individual membrane cartridges and to manage the history of the individual membrane cartridges, the exchange of the membrane cartridges is carried out collectively for each membrane separation apparatus after a certain period of time. Has been replaced. An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a method of identifying a membrane cartridge in which the installation history of a membrane cartridge can be easily grasped in a state where the membrane cartridge is installed in a membrane separation device.

[0009]

According to a first aspect of the present invention, there is provided a method for identifying a membrane cartridge, comprising the steps of: providing a filtration membrane on both sides of a flat rigid plate; In a submerged membrane separation apparatus in which a plurality of membrane cartridges are arranged in parallel with a given interval with a plurality of membrane cartridges in a vertical direction, and immersed in a reaction vessel, the upper edge of the filter plate of each membrane cartridge is A code display means for displaying an identification code is provided, and the non-contact code reading means is scanned along the arrangement direction of the plurality of code display means arranged in a row to read the identification code of each membrane cartridge, and the read identification is read. Each membrane cartridge is identified by a code, and the identification codes of the identified membrane cartridges are displayed in a list in the arrangement order of the membrane cartridges.

According to a second aspect of the present invention, there is provided a method for identifying a membrane cartridge according to the present invention. The list is displayed in the order of cartridge arrangement. According to a third aspect of the present invention, a cleaning fluid is sprayed on the code display means at the time of scanning by the code reading means to remove foreign matter adhering to the code display means.

According to the above configuration, when the membrane cartridge is identified for maintenance, the upper edge of the membrane cartridge is exposed from the liquid in the tank in a state where the membrane cartridge is mounted on the immersion type membrane separator and immersed in the reaction tank. Let it. In this state, the code display means of each membrane cartridge is read by the code reading means. At this time, since the code display means of each membrane cartridge is arranged in a line, the identification codes can be read out from the code display means of all the membrane cartridges by one scan, and each code can be read continuously according to the arrangement order. Read the display means.

By this scanning, each membrane cartridge is sequentially identified, and the order of the read identification codes is stored as the arrangement order of each membrane cartridge. By displaying the stored identification codes in a list in the order of arrangement of the respective membrane cartridges, the operator can individually identify the respective membrane cartridges arranged in a state of being actually used and recognize the arrangement position thereof. The intended membrane cartridge can be easily selected and taken out.

The operator records the installation history of each membrane cartridge in a document or a storage device in advance, and refers to the intended installation history of the membrane cartridge based on the identification code. The history can be easily grasped, the membrane cartridges mounted on the immersion type membrane separation device can be individually managed, and each membrane cartridge can be appropriately moved or replaced based on the installation history.

In this display of the installation history, the installation history of each membrane cartridge stored in advance in association with each identification code is read from the storage device, and the read installation history of each membrane cartridge is displayed as a list in the arrangement order of each membrane cartridge. You can also. Since the immersion type membrane separation apparatus is used by being immersed in an activated sludge reaction tank or the like, foreign matter such as sludge is attached to the code display means. To remove foreign matter adhering to the code display means, thereby preventing reading errors and erroneous recognition.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, each membrane cartridge 22 is mounted on an immersion type membrane separation apparatus in the state described in FIG. 4, and is immersed in an activated sludge reaction tank such as an aeration tank to separate activated sludge and treated water. I do.

Each membrane cartridge 22 is provided with a bar code 1 as a code display means for displaying an identification code on the upper end edge of the filter plate 22A, and the bar codes 1 of each membrane cartridge 22 are arranged in a line. The scanner unit 2 includes an optical bar code reader 3 serving as a non-contact code reading unit.
And a nozzle 4 for spraying a cleaning fluid such as water or air onto the bar code 1. The bar code reader 3 is connected to a reader 5 via a signal cable 6, and the nozzle 4 is a flexible tube such as a tube. A cleaning fluid supply device 8 is connected via a passage 7, and a reading device 5 is connected to a display device 9 of a printer or a monitor.

The storage device of the reading device 5 stores the installation history in association with the identification code of each film cartridge 22. The installation history data includes manufacturing information, manufacturing date, film welding condition, film welding condition, and the like. There are lot number, installation information, survey date, facility name, arrangement information, maintenance information, etc.By inputting information such as water washing and chemical washing,
The history of the production of the membrane cartridge 22 is all managed. This management information is managed by a maintenance and inspection company.

The operation of the above configuration will be described below. When the membrane cartridge 22 is identified in the maintenance, the upper edge of the membrane cartridge 22 is exposed from the liquid in the tank in a state where the membrane cartridge 22 is mounted on the immersion type membrane separation device and immersed in the reaction tank. In this state, the scanner unit 2 is moved in the direction in which the barcodes 1 are arranged, and the barcode reader 3 moves each membrane cartridge 22.
Is read. At this time, since foreign matter such as activated sludge has adhered to the barcode 1, a cleaning fluid is sprayed from the nozzle 4 onto the barcode 1 in front of the scanning direction of the barcode reader 3 to remove foreign matter such as sludge. ,
Prevent reading errors and misrecognition.

Since the barcodes 1 of each of the membrane cartridges 22 are arranged in a line, the barcode readers 3 scan the barcodes 1 of all the membrane cartridges 22 once.
The bar code 1 can be read continuously according to the arrangement order of the membrane cartridges 22. By this scanning, each membrane cartridge 22 is sequentially identified, the identification code is stored in the storage device of the reading device 5, and the order of the read identification codes is stored as the arrangement order of each membrane cartridge 22.

As shown in FIG. 2, the stored identification codes are listed on the display device 9 in the arrangement order of the membrane cartridges 22. With this display, the operator can individually identify each of the membrane cartridges 22 arranged in a state where they are actually used, and can recognize the arrangement position. For this reason, the intended membrane cartridge to be managed can be easily selected and taken out.

The operator refers to and displays the intended installation history of the membrane cartridge 22 based on the identification code from the installation history of each membrane cartridge 22 recorded in the storage device, thereby displaying the installation history of each membrane cartridge 22. It can be easily grasped, and the membrane cartridges 22 mounted on the immersion type membrane separation device can be individually managed, and each membrane cartridge 22 can be appropriately moved or replaced based on the installation history.

As shown in FIG. 3, when the identification code is displayed after scanning, the installation history of each membrane cartridge 22 associated with each identification code is read from the storage device, and the read installation history of each membrane cartridge 22 is read. Membrane cartridge 2
A list can also be displayed in the order of 2.

[0023]

As described above, according to the present invention, by arranging the code display means of each membrane cartridge in a line, the identification code can be read from the code display means of all the membrane cartridges by one scanning. By sequentially storing the read identification codes, the arrangement order of the membrane cartridges can be recognized. By displaying the read identification codes in a list, the operator can individually identify each of the membrane cartridges arranged in a state of being actually used and recognize the arrangement position. In addition, since the installation history of each membrane cartridge can be easily grasped based on the identification code, the membrane cartridges mounted on the immersion type membrane separation device are individually managed, and each membrane cartridge is appropriately determined based on the installation history. Can be moved and exchanged.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a method for identifying a membrane cartridge according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a display example of a display device in the embodiment.

FIG. 3 is a schematic diagram showing a display example of the display device in the embodiment.

FIG. 4 is a perspective view showing a configuration of an immersion type membrane separation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Barcode 2 Scanner part 3 Barcode reader 4 Nozzle 5 Reading device 6 Signal cable 7 Pipeline 8 Cleaning fluid supply device 9 Display device 22 Membrane cartridge 22A Filter plate

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tatsuya Uejima 2-47 Shishitsu Higashi, Naniwa-ku, Osaka-shi, Osaka F-term in Kubota Corporation (reference) 4D006 GA02 HA42 HA91 HA93 JA07A JA51A KA13 KA44 LA10 MA03 MA06 MA40 MB11 PA01 PB08 PC61 PC62

Claims (3)

[Claims] 1. A membrane cartridge is formed by providing filtration membranes on the front and back of a plate-shaped rigid filter plate, and a plurality of membrane cartridges are arranged in parallel at regular intervals with the membrane surfaces along the vertical direction. In the immersion type membrane separation device, which is immersed in the reaction tank, a code display means for displaying an identification code is provided on the upper end edge of the filter plate of each membrane cartridge, and a plurality of code display means arranged in a line are arranged along the arrangement direction. The identification code of each membrane cartridge is read by scanning the non-contact code reading means, each membrane cartridge is identified by the read identification code, and the identification code of each identified membrane cartridge is listed in the arrangement order of each membrane cartridge. A method for identifying a membrane cartridge, which comprises displaying the information. 2. An installation history of each membrane cartridge stored in advance in association with each identification code is read from a storage device.
2. The method for identifying a membrane cartridge according to claim 1, wherein the readout installation history of each membrane cartridge is displayed in a list in the arrangement order of each membrane cartridge. 3. The method for identifying a membrane cartridge according to claim 1, wherein a cleaning fluid is sprayed on the code display means when the code reading means scans to remove foreign matter adhering to the code display means.