Method for cleaning bisphenol dust removal filter cartridge

Abstract

The invention discloses a method for cleaning and treating a bisphenol a dust removal filter cartridge, the process comprises the following steps: a pretreatment stage, a soaking treatment stage, an airing treatment stage and a wastewater treatment stage, and the method comprises the following steps: pouring calculated (weighed) water and alkali (the mass ratio is 500: 1) into a container, and uniformly stirring to form alkali liquor; soaking the filter cartridge adhered with bisphenol a in a container, wherein the water surface submerges the filter cartridge; and soaking for about 8-12 hours. The container can contain 4-6 filter cartridges, and the alkali liquor can continuously soak the filter cartridges for 2-3 rounds, namely the alkali liquor can be repeatedly used for 2-3 times; and after soaking, fishing out the filter cartridge, placing the filter cartridge in a tray, and vertically airing. Or blow-drying with an air gun, and slightly blowing with the air gun so as to prevent the synthetic fiber non-woven filter material from being damaged. And the air-dried product can be installed and used. The invention successfully solves the problems that the resistance of a cartridge filter is larger and larger, the treatment effect is greatly reduced, and the operation cost is high due to frequent replacement of a filter cartridge since bisphenol a adheres to the surface of a filter material in the process of treating the waste gas bisphenol a by the cartridge filter, is difficult to be washed or cleaned by airflow and is accumulated on the surface of the filter material in a short time.

Description

Technical Field

[0001] This invention relates to a method for cleaning and treating bisphenol A dust collector filter cartridges, and more particularly to a method for cleaning dust collector filter cartridges adhering to bisphenol A using a certain proportion of alkaline solution. The technical invention, which integrates the alkaline solution ratio, soaking time, and cleaning method, is a method for cleaning and treating bisphenol A dust collector filter cartridges. Background Technology

[0002] Industrial production processes generate dust particles containing bisphenol A (BPA), which are typically treated using baghouse dust collectors or cartridge dust collectors. Cartridge dust collectors require regular filter cartridge replacement and cleaning to maintain filtration efficiency. The normal replacement interval for cartridges is generally three to five months. However, BPA in the exhaust gas is sticky and adheres to the filter media surface during treatment, making it difficult to wash away or clean. Furthermore, BPA accumulates on the filter media surface quickly, leading to a decline in the effectiveness of cartridge dust collectors. Frequent cartridge replacements result in high operating costs and increased hazardous waste storage. This invention is suitable for filter cartridges made with synthetic fiber nonwoven filter media and those using synthetic fiber nonwoven filter media as the base material for membrane filter media. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for cleaning filter cartridges of dust collectors that treat bisphenol A waste gas, which has good cleaning effect and low cost.

[0004] The specific scheme of a method for cleaning and treating bisphenol A dust collector filter cartridges is as follows: 1. Pretreatment stage: Prepare a container (acid and alkali resistant material) that can hold 4-6 filter cartridges; prepare clean water; prepare alkali (with packaging); weighing scale and measuring cylinder, and calculate the ratio of alkali to water in advance as 1:500 (mass ratio).

[0005] 2. Soaking Treatment Stage: Pour the calculated amount of alkali and water (mass ratio 1:500) into a container and stir well to form an alkaline solution. Then, immerse the filter cartridges coated with bisphenol A in the container, ensuring the water level completely submerges the cartridges. The soaking time is approximately 8-12 hours. The container can hold 4-6 filter cartridges, and the soaking solution can be used to soak 2-3 batches of filter cartridges consecutively, meaning the soaking solution can be reused 2-3 times.

[0006] 3. Drying stage: After soaking, remove the filter cartridge and place it on a tray. It can be air-dried vertically or dried with an air gun. Be careful to blow gently with the air gun to avoid damaging the synthetic fiber non-woven filter media. Afterwards, it can be installed and used.

[0007] 4. Wastewater treatment stage: The wastewater generated includes the soaking solution wastewater in the containers and the wastewater in the trays. It is collected and treated in the wastewater treatment station in the factory area before being discharged into the wastewater treatment plant.

[0008] The advantages and positive effects of this invention are: Through multiple experiments during the pretreatment stage, this invention has shown that the optimal ratio of alkali solution (water and alkali) of 500:1 is the best for treating filter cartridges containing bisphenol A.

[0009] The process of this invention can be completed in just one day, which is highly efficient.

[0010] The soaking solution of this invention can be recycled 2-3 times, which greatly reduces the amount of wastewater generated and the amount of clean water used, making it energy-saving and environmentally friendly.

[0011] This invention can greatly extend the service life of dust collector cartridges that handle sticky bisphenol A, thus saving costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a method for cleaning and treating bisphenol A dust collector filter cartridges according to the present invention. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0014] A method for cleaning and treating bisphenol A (BPA) dust collector filter cartridges is characterized by comprising a container 1, filter cartridges 2, alkali 4, a stirring rod 5, a measuring cylinder 6, a tray 7, and clean water 8. The calculated (weighed) clean water 8 and alkali 5 (mass ratio 500:1) are poured into the container and stirred evenly to form an soaking solution. The filter cartridges 2 contaminated with BPA are then soaked in the container 1, ensuring the water level completely submerges them. The soaking time is approximately 8-12 hours. The container 1 can hold 4-6 filter cartridges 2, and the soaking solution can be used to soak the filter cartridges 2 repeatedly for 2-3 cycles. After soaking, the filter cartridges 2 are removed and placed in the tray 7, and can be air-dried vertically or dried with an air gun. Care should be taken to use the air gun gently to avoid damaging the synthetic fiber nonwoven filter material 3. The filter cartridges are then ready for use.

[0015] A method for cleaning and treating bisphenol A dust collector filter cartridges includes the following stages: 1. Pretreatment stage: Prepare a container that can hold 4-6 filter cartridges; prepare an appropriate amount of clean water; prepare an appropriate amount of alkali (with packaging); weighing scale and measuring cylinder, calculate the ratio of alkali to water in advance as 1:500 (mass ratio), and prepare the filter cartridges to be treated.

[0016] 2. Soaking Treatment Stage: Pour the calculated amount of alkali and water (mass ratio 1:500) into a container and stir well to form an alkaline solution. Then, immerse the filter cartridges coated with bisphenol A in the container, ensuring the water level completely covers the filter cartridges, for approximately 8-12 hours. The container can hold 4-6 filter cartridges, and the soaking solution can be used to soak the filter cartridges 2-3 times consecutively, meaning the soaking solution can be reused 2-3 times.

[0017] 3. Drying stage: After soaking, remove the filter cartridge and place it on a tray to air dry vertically. Alternatively, you can use an air gun to dry it, but be careful to blow gently to avoid damaging the synthetic fiber non-woven filter material. Once dry, it is ready for installation and use.

[0018] 4. Wastewater treatment stage: The wastewater generated includes the soaking solution wastewater in the containers and the wastewater in the trays. It is collected and treated in the wastewater treatment station in the factory area before being discharged into the wastewater treatment plant.

[0019] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. The method of claim 1, wherein the method of cleaning a dust filter cartridge for bisphenol A comprises: The method needs to prepare a container, which can hold 4-6 filter cartridges; prepare the appropriate amount of water; Prepare the appropriate amount of alkali (with packaging); weigh and measure the cylinder, and calculate the ratio of alkali and water in advance 1:500 (mass ratio).

2. The method of claim 1, wherein the dust filter cartridge is a bisphenol A cleaning cartridge. The calculated amount of water and alkali (mass ratio 500:1) is poured into the container and stirred evenly to form an alkali solution. Then the filter cartridge with bisphenol a is soaked in the container, and the water surface should submerge the filter cartridge, and the soaking time is about 8-12 hours. The container can hold 4-6 filter cartridges, and the alkali solution can continuously soak 2-3 rounds of filter cartridges, that is, the alkali solution can be reused 2-3 times.

3. The method of claim 1, wherein the dust filter cartridge is a dust filter cartridge for a bisphenol A cleaning process. The soaked filter cartridge is taken out and placed in a tray for vertical drying; or dried with an air gun, and the air gun should be blown gently to avoid damaging the synthetic fiber non-woven filter material. Then it can be installed and used.

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