Ceramic membrane cleaning agent and preparation process thereof

Abstract

The invention discloses a ceramic membrane cleaning agent which comprises an agent A, an agent B, an agent C and water, wherein the agent A comprises sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant; the agent B comprises potassium pyrophosphate and ethylenediamine tetraacetic acid tetrasodium salt; the agent C comprises sodium hypochlorite. The invention further discloses a preparation method of the ceramic membrane cleaning agent. The problems that an existing ceramic membrane cleaning agent is common in cleaning effect, and the service life of a ceramic membrane is affected due to incomplete cleaning are solved. The agent A is selected from sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant, and the sodium dodecyl sulfate and the polyoxyethylene ether nonionic surfactant both have an emulsifying effect and good compounding property and can enhance the emulsifying effect through a synergistic effect; in the agent B, the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate have a synergistic effect, and the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate are matched, so that the cleaning effect can be improved, and the decontamination capability can be enhanced. The agent C is matched with the agent A and the agent B, so that the overall stability of the cleaning agent is ensured. Therefore, the ceramic membrane has antibacterial, efficient decontamination and efficient emulsification performance at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of degreasing agents, in particular to a ceramic membrane cleaning agent. Background Art

[0002] Currently, the waste emulsion continuously discharged from the workshop's machine trains first enters the waste emulsion treatment station's existing emulsion regulating tank. After a long period of residence in the regulating tank, a large amount of free floating oil is separated. The waste emulsion from the regulating tank is pumped to a grease trap. The effluent from the grease trap is filtered through a paper belt filter to remove coarse residue before entering a circulation tank equipped with a heating device to heat the waste emulsion at a controlled temperature of approximately 65-70°C. From the circulation tank, the waste emulsion is pumped to an inorganic ceramic membrane ultrafiltration unit for oil-water separation. After the emulsified oil is trapped by the unit, the effluent enters the industrial wastewater treatment system.

[0003] During the above process, the inorganic ceramic membrane ultrafiltration device is equipped with a cleaning device to regularly clean and maintain the ceramic membrane. Currently, ceramic membrane cleaning agents are used to clean the ceramic membrane. Due to the residual emulsified oil, the ceramic membrane is seriously contaminated. The cleaning effect of existing cleaning agents is generally poor, and incomplete cleaning will shorten the service life of the ceramic membrane. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the cleaning effect of existing ceramic membrane cleaning agents is average, and incomplete cleaning will also affect the service life of the ceramic membrane. The purpose is to provide a ceramic membrane cleaning agent and a preparation process. The present invention is achieved through the following technical solutions: A ceramic membrane cleaning agent comprises agent A, agent B, agent C and water; wherein agent A comprises sodium lauryl sulfonate and a polyoxyethylene ether nonionic surfactant; agent B comprises potassium pyrophosphate and tetrasodium ethylenediaminetetraacetic acid; and agent C comprises sodium hypochlorite. As one of the preferred technical solutions, the polyoxyethylene ether nonionic surfactant includes nonylphenol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

[0005] As one of the preferred technical solutions, the mass ratios of agent A, agent B, agent C and water are: 11-19 parts of agent A, 5-9 parts of agent B, 8-12 parts of agent C, and the rest is water.

[0006] As one of the preferred technical solutions, the components of Agent A are mixed in the following proportions by mass: 4-6 parts of sodium lauryl sulfate, 4-6 parts of nonylphenol polyoxyethylene ether, 2-4 parts of isomeric alcohol polyoxyethylene ether, and 1-3 parts of fatty alcohol polyoxyethylene ether.

[0007] As one of the preferred technical solutions, the components of Agent B are mixed in the following proportions by mass: 4-6 parts of potassium pyrophosphate and 1-3 parts of tetrasodium ethylenediaminetetraacetic acid.

[0008] As one of the preferred technical solutions, the water is industrial water.

[0009] As one of the preferred technical solutions, the components are mixed in the following proportions by mass: 5 parts sodium dodecyl sulfate, 5 parts nonylphenol polyoxyethylene ether, 3 parts isomeric alcohol polyoxyethylene ether, 2 parts fatty alcohol polyoxyethylene ether, 5 parts potassium pyrophosphate, 2 parts tetrasodium ethylenediaminetetraacetic acid, 10 parts sodium hypochlorite, and 68 parts water.

[0010] This embodiment also provides another aspect. The present invention also discloses a preparation process of a ceramic membrane cleaning agent, comprising the following steps: Through experiments, the components of agent A, agent B and agent C were screened in sequence; Weigh the determined cleaning agent components according to mass percentage. First, weigh the polyoxyethylene ether nonionic surfactant and add it to tank A. Then pour water into it at a ratio of 1:1, heat and stir, and set aside. Weigh the remaining water, then add the weighed potassium pyrophosphate, EDTA-4Na, and sodium lauryl sulfate into tank B and stir until completely dissolved; Pour the liquid in tank A into the solution in tank B and mix; Finally, add sodium hypochlorite into tank B and stir. As one of the preferred technical solutions, the heating temperature in step 1 is 60° C., and the stirring time in step 4 is 20 minutes.

[0011] This embodiment also provides another aspect, which is the use of the ceramic membrane cleaning agent of the present invention in cleaning an inorganic ceramic membrane ultrafiltration device.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. Agent A of the present invention uses sodium lauryl sulfate and polyoxyethylene ether nonionic surfactants, both of which have specific emulsification effects and good compatibility. At the same time, the two can enhance the emulsification effect through synergistic action.

[0013] 2. In agent B, potassium pyrophosphate and tetrasodium EDTA have a synergistic effect. The combination of the two can increase the cleaning effect and enhance the decontamination ability.

[0014] 3. Agent C works with Agent A and Agent B to ensure the overall stability of the cleaning agent, making the ceramic membrane have antibacterial, efficient decontamination and efficient emulsification properties. DETAILED DESCRIPTION

[0015] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0016] Example 1 The ceramic membrane cleaning agent of this embodiment is composed of the following components in the following mass ratios: Agent A: 5 parts of sodium dodecylsulfonate, 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, and 2 parts of fatty alcohol polyoxyethylene ether; Agent B: 5 parts of potassium pyrophosphate, 2 parts of tetrasodium ethylenediaminetetraacetic acid; Agent C: 10 parts of sodium hypochlorite; and 68 parts of water.

[0017] Specifically, in this embodiment, Agent A is an emulsifier, Agent B is a complexing agent, Agent C is a fungicide, and water is industrial water. The primary function of an emulsifier is to reduce the interfacial tension between two immiscible liquids (such as oil and water), enabling them to form a stable emulsion. Complexing agents can form stable complexes with metal ions, thereby altering the chemical properties of the metal ions. The primary function of fungicides is to inhibit or kill microorganisms (such as bacteria, fungi, and viruses), preventing their growth and reproduction.

[0018] The specific preparation process is: Weigh each component by mass percentage. First, weigh 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, and 2 parts of fatty alcohol polyoxyethylene ether and add them to tank A. Then pour 10 parts of industrial water in a 1:1 ratio, heat and stir for later use. The heating temperature is 60°C. Weigh 58 parts of industrial water, then add 5 parts of potassium pyrophosphate, 2 parts of tetrasodium ethylenediaminetetraacetic acid, and 5 parts of sodium lauryl sulfate into tank B and stir until completely dissolved; Pour the liquid in tank A into the solution in tank B and mix; Finally, add 10 parts of sodium hypochlorite into tank B and stir for 20 minutes.

[0019] During this process, Tank A and Tank B are two different liquid mixing tanks that are corrosion-resistant and high-temperature resistant. They are also equipped with stirring devices to ensure that the reagents can be fully and evenly mixed.

[0020] Example 2 The ceramic membrane cleaning agent of this embodiment is composed of the following components in the following proportions by weight: Agent A: 4 parts sodium lauryl sulfonate, 4 parts nonylphenol polyoxyethylene ether, 2 parts isomeric alcohol polyoxyethylene ether, and 1 part fatty alcohol polyoxyethylene ether. Agent B: 4 parts potassium pyrophosphate, 3 parts tetrasodium EDTA. Agent C: 12 parts sodium hypochlorite, and 70 parts water.

[0021] In this embodiment, agent A is an emulsifier, agent B is a complexing agent, agent C is a bactericide, and water is industrial water.

[0022] The specific preparation process is: Weigh each component by mass percentage. First, weigh 4 parts of nonylphenol polyoxyethylene ether, 2 parts of isomeric alcohol polyoxyethylene ether, and 1 part of fatty alcohol polyoxyethylene ether and add them to tank A. Then pour 7 parts of water in a 1:1 ratio, heat and stir for later use. The heating temperature is 65°C. Weigh 63 parts of water, then add 4 parts of potassium pyrophosphate, 3 parts of tetrasodium ethylenediaminetetraacetate, and 4 parts of sodium lauryl sulfate to tank B and stir until completely dissolved; Pour the liquid in tank A into the solution in tank B and mix; Finally, add 12 parts of sodium hypochlorite into tank B and stir for 25 minutes.

[0023] During this process, Tank A and Tank B are two different liquid mixing tanks that are corrosion-resistant and high-temperature resistant. They are also equipped with stirring devices to ensure that the reagents can be fully and evenly mixed.

[0024] Example 3 The ceramic membrane cleaning agent of this embodiment is composed of the following components in the following mass ratios: Agent A: 6 parts of sodium dodecylsulfonate, 6 parts of nonylphenol polyoxyethylene ether, 4 parts of isomeric alcohol polyoxyethylene ether, and 3 parts of fatty alcohol polyoxyethylene ether; Agent B: 6 parts of potassium pyrophosphate, 1 part of tetrasodium ethylenediaminetetraacetic acid; Agent C: 8 parts of sodium hypochlorite; and 66 parts of water.

[0025] In this embodiment, agent A is an emulsifier, agent B is a complexing agent, agent C is a bactericide, and water is industrial water.

[0026] The specific preparation process is: Weigh each component by mass percentage. First, weigh 6 parts of nonylphenol polyoxyethylene ether, 4 parts of isomeric alcohol polyoxyethylene ether, and 3 parts of fatty alcohol polyoxyethylene ether and add them to tank A. Then pour 13 parts of water in a 1:1 ratio, heat and stir for later use. The heating temperature is 55°C. Weigh 55 parts of water, then add 6 parts of potassium pyrophosphate, 1 part of tetrasodium ethylenediaminetetraacetate, and 6 parts of sodium lauryl sulfate into tank B and stir until completely dissolved; Pour the liquid in tank A into the solution in tank B and mix; Finally, add 8 parts of sodium hypochlorite into tank B and stir for 15 minutes.

[0027] During this process, Tank A and Tank B are two different liquid mixing tanks that are corrosion-resistant and high-temperature resistant. They are also equipped with stirring devices to ensure that the reagents can be fully and evenly mixed.

[0028] Example 4: Determination and screening process of components of ceramic membrane cleaning agent A The specific screening process for determining the components of the ceramic membrane cleaning agent in this embodiment is as follows: first, the composition of agent A (emulsifier) ​​is determined; then agent B (chelating agent) and agent C (bactericide) are determined.

[0029] Specifically, in combination with existing emulsifiers, the experimental components of Agent A for screening include: sodium lauryl sulfonate, sodium lauryl sulfate, nonylphenol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether; the emulsifiers are combined and proportioned according to the mass ratio of the above experimental components, and the specific proportions are shown in Table 1. Among them, A-1#: 5 parts of sodium lauryl sulfonate, 5 parts of nonylphenol polyoxyethylene ether, and the rest is water.

[0030] A-2#: 5 parts of sodium lauryl sulfonate, 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, and the rest is water.

[0031] A-3#: 5 parts of sodium lauryl sulfonate, 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, 2 parts of fatty alcohol polyoxyethylene ether, and the rest is water.

[0032] A-4#: 5 parts of sodium lauryl sulfate, 5 parts of nonylphenol polyoxyethylene ether, and the rest is water.

[0033] A-5#: 5 parts of sodium lauryl sulfate, 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, and the rest is water.

[0034] A-6#: 5 parts of sodium lauryl sulfate, 5 parts of nonylphenol polyoxyethylene ether, 3 parts of isomeric alcohol polyoxyethylene ether, 2 parts of fatty alcohol polyoxyethylene ether, and the rest is water.

[0035] Table 1 Combination ratio of each component of Agent A

[0036] Dissolve or disperse the pre-mixed emulsifiers from each group (A) at a 5% by weight ratio in sufficient water or other solvent to create a 1 liter tank solution. Heat to 50°C and then mix with 100 ml of emulsified oil.

[0037] In addition, the oil volume scale of each group of Agent A was observed. The lower the oil volume scale, the more emulsified the part, and the better the effect. The longer the storage time, the higher the stability of Agent A. The test results are shown in Table 2.

[0038] Table 2 Test results of the combination ratio of each component of Agent A

[0039] Conclusion: As can be seen from Table 2, A-3# has a better effect. A-3# was finally selected as the component A of this example.

[0040] Comparing groups A-1# and A-4#, and A-2# and A-5#, the difference is that A-1# and A-2# use sodium lauryl sulfonate, while A-4# and A-5# use sodium lauryl sulfate. It can be seen that the final emulsification effect did not change significantly.

[0041] However, by comparing groups A-3# and A-6#, it can be seen that the emulsification effect of group A-3# is significantly better than that of group A-6#. It can be inferred that fatty alcohol polyoxyethylene ether and sodium lauryl sulfate have a synergistic effect, and the combination of the two greatly increases the degreasing and cleaning effect of the detergent.

[0042] It's known that sodium lauryl sulfate, an anionic surfactant in Agent A, possesses emulsifying, detergency, and dispersing properties, making it widely used in detergents, textiles, the petroleum industry, pharmaceuticals, and laboratory analysis. It disrupts oil-water emulsions and promotes their separation. Furthermore, its hydrophilic sulfonic acid group and hydrophobic long-chain hydrocarbon group give it a unique mechanism of action during the emulsification process.

[0043] Nonylphenol polyoxyethylene ether is an important nonionic surfactant. Its molecular structure contains hydrophilic polyoxyethylene segments and hydrophobic nonylphenol groups. The hydrophobic groups adsorb onto surfaces of pollutants such as oil, while the hydrophilic groups allow the entire molecule to dissolve in water. Through emulsification and dispersion, it removes oil and other pollutants from surfaces, achieving the purpose of cleaning.

[0044] Isomeric alcohol polyoxyethylene ether has the advantages of wettability, reducing liquid surface tension and enhancing penetration into solid surfaces. It also has the following properties: Emulsification: It has excellent emulsifying effect on grease, silicone oil (such as amino silicone oil), etc., and the emulsion is highly stable and requires a small dosage.

[0045] Dispersibility: Prevents particle aggregation and is used to improve pigment dispersion in coatings and inks.

[0046] ‌Permeability‌: The branched structure (non-Guerbet alcohol) allows for enhanced penetration deep into the fiber.

[0047] Fatty alcohol polyoxyethylene ether is an important type of nonionic surfactant. The ether bond in the molecule is not easily destroyed by acids or alkalis, so it has high stability, good water solubility, electrolyte resistance, easy biodegradation, and low foaming.

[0048] Example 5 Determination and screening process of components of ceramic membrane cleaning agents B and C Specifically, in combination with the existing complexing agent, the experimental components of agent B for screening include potassium pyrophosphate, sodium metasilicate pentahydrate, tetrasodium ethylenediaminetetraacetic acid and nitrilotriacetic acid; according to the above experimental components, the emulsifier is combined and proportioned in parts by mass, as shown in Table 3.

[0049] Among them, B-1#: 5 parts of potassium pyrophosphate and 2 parts of tetrasodium ethylenediaminetetraacetic acid.

[0050] B-2#: 5 parts of potassium pyrophosphate, 2 parts of nitrilotriacetic acid.

[0051] B-3#: 5 parts of sodium metasilicate pentahydrate, 2 parts of tetrasodium ethylenediaminetetraacetic acid.

[0052] B-4#: 5 parts of sodium metasilicate pentahydrate, 2 parts of nitrilotriacetic acid.

[0053] Table 3 Combination ratio of each component of Agent B

[0054] Separately, Agent A (select A-3#) was mixed with each set of Agent B to create four different combinations. Two groups were set up for each combination. One group was stored at low temperature (5°C) for 30 days to observe the stability of each combination and prevent crystallization. In the other group, the ceramic membrane was cut into small pieces, coated with emulsified oil, and mixed with the four different combinations. The pieces were then cleaned in an ultrasonic cleaner for three minutes. The surface of the cleaned ceramic membrane pieces was observed, with reflectivity as an indicator of cleanliness. The pieces were then left to stand for one month to observe bacterial growth.

[0055] It can be seen that this embodiment uses the Novo-Shade Duo+ reflectivity instrument produced by Rhopoint, a UK company. The test results are shown in Table 4.

[0056] Table 4 Test results of the combination ratios of A and B agents

[0057] Conclusion: From Table 4, we can see that the A+B-1# group has the highest reflectivity and the best cleaning level.

[0058] Combined with the results shown in Table 3 and Table 4, the comparison of A+B-2# and A+B-4# groups shows that both groups selected nitrilotriacetic acid, and the difference is that the A+B-2# group selected potassium pyrophosphate and the A+B-4# group selected sodium metasilicate pentahydrate. In the end, the cleaning degree of the A+B-2# group was better than that of the A+B-4# group, but the difference was not obvious. Comparing A+B-1# and A+B-2# groups, the same thing is that both groups selected potassium pyrophosphate, and the difference is that the A+B-1# group selected tetrasodium ethylenediaminetetraacetic acid and the A+B-2# group selected nitrilotriacetic acid; in the end, the cleaning degree of the A+B-1# group was significantly better than that of the A+B-2# group. Comparing the A+B-1# and A+B-3# groups, while both utilize tetrasodium EDTA, the difference lies in the use of potassium pyrophosphate in A+B-1# and sodium metasilicate pentahydrate in A+B-3#. Ultimately, the A+B-1# group still performed significantly better than the A+B-3# group in terms of cleaning performance. This multi-group comparison suggests that potassium pyrophosphate and tetrasodium EDTA work synergistically, enhancing cleaning effectiveness when combined.

[0059] Potassium pyrophosphate functions by chelating alkaline earth metal and heavy metal ions. It forms stable complexes with Ca2+ and Mg2+ in hard water, thereby softening the water, improving cleaning performance, and removing dirt. It also forms a protective film on the surfaces of metals such as iron, lead, zinc, and aluminum. Pyrophosphate ions (P2O74-) have a strong dispersing ability for finely dispersed solids, promoting uniform mixing of fine and trace substances. Potassium pyrophosphate, with its high chelating power (high pyrophosphate ion content), provides a stable pH buffering capacity, maintaining the pH value of the solution over a long period of time.

[0060] Tetrasodium EDTA acts as an alkaline dispersant and synergist. During the evaluation process, its addition increased cleaning performance by approximately 10%. However, all combinations without antimicrobial agents showed signs of bacterial growth and blackening.

[0061] On the basis of the above, combined with existing antibacterial agents, the experimental components of agent C for screening are: sodium hypochlorite and quaternary ammonium salt.

[0062] Among them, C-1#: 10 parts of sodium hypochlorite.

[0063] C-2#: 10 parts of quaternary ammonium salt, as shown in Table 5.

[0064] Table 5 Combination ratio of each component of Agent C

[0065] Operation plan: Mix Agent A (A-3#), Agent B (B-1#), and each set of Agent C to create two different cleaning agents. Prepare two sets of each cleaning agent, with one set containing 5% (w / w) in the tank. Heat to 50°C. Cut the ceramic membrane into small pieces, coat them with emulsified oil, and mix with the cleaning agent. Soak and clean them in an ultrasonic cleaner for 3 minutes, then observe their cleanliness. Then, let them sit naturally for one month to observe bacterial growth.

[0066] The other group was stored at low temperature (5°C) for 30 days to observe whether the combination ratios of each group were stable and did not crystallize.

[0067] Table 6 Test results of different component combinations

[0068] Conclusion: Adding an antimicrobial agent to Agent A (A-3#) and Agent B (B-1#) did not alter the cleaning effect. Furthermore, both the A+B+C-1# and A+B+C-2# groups exhibited antimicrobial properties. However, the A+B+C-2# group crystallized after 7 days, making the stock solution unstable. Therefore, sodium hypochlorite was selected as the antimicrobial agent in this example.

[0069] Sodium hypochlorite is a powerful bactericidal agent that kills a variety of pathogens, viruses, and fungi. Its bactericidal mechanism is that hypochlorous acid acts on the sulfhydryl groups of bacterial enzymes, inhibiting their activity and causing metabolic disruptions and bacterial cell death. Because sodium hypochlorite is a strong oxidizing agent, it also has a bleaching effect.

[0070] Finally, after multiple rounds of screening, the cleaning agent formula of the present invention was obtained: Agent A: sodium lauryl sulfonate, nonylphenol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether; Agent B: potassium pyrophosphate and tetrasodium EDTA; and Agent C: sodium hypochlorite.

[0071] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ceramic membrane cleaning agent, characterized in that: The invention comprises agent A, agent B, agent C and water; wherein agent A comprises sodium lauryl sulfonate and a polyoxyethylene ether nonionic surfactant; agent B comprises potassium pyrophosphate and tetrasodium ethylenediaminetetraacetic acid; and agent C comprises sodium hypochlorite.

2. The ceramic membrane cleaning agent according to claim 1, characterized in that The polyoxyethylene ether nonionic surfactants include nonylphenol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

3. The ceramic membrane cleaning agent according to claim 2, characterized in that: The proportions of Agent A, Agent B, Agent C and water in parts by mass are: 11-19 parts of Agent A, 5-9 parts of Agent B, 8-12 parts of Agent C, and the rest is water.

4. The ceramic membrane cleaning agent according to claim 3, characterized in that The components of Agent A are mixed in the following proportions by mass: 4-6 parts of sodium lauryl sulfonate, 4-6 parts of nonylphenol polyoxyethylene ether, 2-4 parts of isomeric alcohol polyoxyethylene ether, and 1-3 parts of fatty alcohol polyoxyethylene ether.

5. The ceramic membrane cleaning agent according to claim 3, characterized in that The components of Agent B are mixed in the following proportions by mass: 4-6 parts of potassium pyrophosphate and 1-3 parts of tetrasodium EDTA.

6. The ceramic membrane cleaning agent according to claim 1, characterized in that The water is industrial water.

7. The ceramic membrane cleaning agent according to claim 3, characterized in that The components are mixed in the following proportions by mass: 5 parts sodium dodecyl sulfonate, 5 parts nonylphenol polyoxyethylene ether, 3 parts isomeric alcohol polyoxyethylene ether, 2 parts fatty alcohol polyoxyethylene ether, 5 parts potassium pyrophosphate, 2 parts tetrasodium ethylenediaminetetraacetic acid, 10 parts sodium hypochlorite, and 68 parts water.

8. A preparation process of a ceramic membrane cleaning agent, characterized in that: The steps include: Through experiments, the components of agent A, agent B and agent C were screened in sequence; Weigh the determined cleaning agent components by mass. First, weigh the polyoxyethylene ether nonionic surfactant and add it to tank A. Then pour water into it at a ratio of 1:1, heat and stir, and set aside. Weigh the remaining water, then add the weighed potassium pyrophosphate, tetrasodium EDTA, and sodium lauryl sulfate into tank B and stir until completely dissolved; Pour the liquid in tank A into the solution in tank B and mix; Finally, add sodium hypochlorite into tank B and stir.

9. The preparation process of the ceramic membrane cleaning agent according to claim 8, characterized in that: The heating temperature is 55-65° C., and the final stirring time is 15-25 minutes.

10. Use of the ceramic membrane cleaning agent according to any one of claims 1 to 7 in cleaning an inorganic ceramic membrane ultrafiltration device.

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