Flushing water recycling system and method

Abstract

The invention relates to a flushing water recycling system and a flushing water recycling method, and relates to the technical field of flushing water recycling and reusing in the production process of dairy products. The system comprises key components such as a raw water storage tank, an alkaline water storage tank, an acid water storage tank, a waste water recovery tank, an alkaline water recovery tank, an acid water recovery tank and a recovery neutralization tank, and the key components are communicated with a pipeline needing to be washed through valves. A staged flushing strategy is adopted, and a real-time water quality detection and intelligent classification technology is combined, so that the quality and safe reutilization of recycled water are ensured, the water consumption in the dairy product production process is remarkably reduced, the wastewater discharge is reduced, the green and environment-friendly concept is met, and meanwhile, the operation cost of an enterprise is reduced.

Description

Technical Field

[0001] The present application relates to the field of flushing water recovery and reuse in the dairy product production process, and in particular to a flushing water reuse system and utilization method. Background Art

[0002] During the use of dairy equipment, milk stains, fat and other organic matter will remain. If these residues are not removed in time, it is easy to breed bacteria, mold and other microorganisms, thereby contaminating the subsequent dairy products produced, posing a potential threat to the health of consumers. Regular cleaning of equipment can ensure the sanitary quality of dairy products and maintain the food safety of consumers. At the same time, after long-term use of dairy equipment, residual dirt and blockages will affect the normal operation of the equipment and lead to a decrease in production efficiency. Through regular cleaning, the equipment can be kept in the best working condition, the probability of failure can be reduced, and the overall production efficiency can be improved. After the completion of each production link of dairy products, the equipment and pipelines such as transportation, storage and fermentation need to be flushed.

[0003] The large amount of wastewater generated during the traditional flushing process is usually discharged directly, which not only wastes water resources but also increases water bills. Although some companies try to simply recycle and reuse flushing water, they lack a scientific and effective detection and classification system to ensure the quality and reuse effect of the recycled water. Summary of the invention

[0004] In order to reduce water consumption in the dairy production process and reduce wastewater discharge, the present application provides a flushing water reuse system and utilization method.

[0005] The present application provides a flushing water reuse system and method using the following technical solutions: A flushing water reuse system, comprising: a raw water storage tank, an alkaline water storage tank, an acid water storage tank, a waste water recovery tank, an alkaline water recovery tank, an acid water recovery tank and a recovery and neutralization tank; Clean raw water is stored in the raw water storage tank, which is connected to the dairy product pipeline that needs to be flushed through a valve to flush the residue inside the pipeline, and the waste water carrying the residue after flushing is stored in the waste water recovery tank; The alkaline water storage tank stores alkaline water, and the alkaline water storage tank is connected to the dairy product pipeline through a valve, and the pipeline is alkaline-flushed after preliminary flushing with raw water to remove acid residues in the pipeline, and the flushed liquid is stored in the alkaline water recovery tank; The acid water storage tank is connected to the dairy product pipeline through a valve, and acid water is stored inside. The pipeline after alkaline flushing is acid-flushed to remove alkaline residues in the pipeline, and the flushed liquid is stored in the acid water recovery tank; A detection device is arranged in the alkaline water recovery tank and the acid water recovery tank to detect the acidity and alkalinity in the alkaline water recovery tank and the acid water recovery tank. Liquid with qualified acidity and alkalinity is transported from the alkaline water recovery tank and the acid water recovery tank to the alkaline water storage tank and the acid water storage tank for next flushing, and liquid with unqualified acidity and alkalinity is transported to the recovery and neutralization tank; The recovery and neutralization tank is connected to the raw water storage tank, and the neutralized water enters the raw water storage tank to be used for the next flushing.

[0006] By adopting the above technical solution, first, open the valve between the raw water storage tank and the dairy product pipeline, push the raw water to the pipeline for preliminary flushing, rinse the residue in the pipeline, and the waste water after flushing flows into the wastewater recovery tank through the pipeline, then close the raw water valve, open the valve between the alkaline water storage tank and the dairy product pipeline, push alkaline water to the pipeline, perform alkaline flushing on the pipeline after preliminary flushing to remove acidic residues, and the flushed liquid flows into the alkaline water recovery tank, then close the alkaline water valve, open the valve between the acid water storage tank and the dairy product pipeline, push acidic water to the pipeline, perform acid flushing on the pipeline after alkaline flushing to remove alkaline residues, and the flushed liquid flows into the acid water recovery tank The detection devices in the alkaline water recovery tank and the acid water recovery tank detect the acidity and alkalinity of the recovered liquid. The liquid with qualified acidity and alkalinity is transported back to the corresponding alkaline water storage tank and acid water storage tank for the next flushing. The liquid with unqualified acidity and alkalinity is transported to the recovery neutralization tank for neutralization with the raw water. The neutralized water enters the raw water storage tank to prepare for the next flushing. The recovered water can be used again after proper treatment to form a cycle. The recycling and reuse of wastewater greatly reduces the consumption of fresh water sources, realizes the efficient use of water resources, and thus reduces the amount of wastewater discharged. At the same time, through alternating acid and alkali flushing, the residues in the pipeline are more effectively removed, and the sanitary quality of dairy products is improved.

[0007] Preferably, the flushing water in the raw water storage tank flushes the pipeline for the first and second times.

[0008] By adopting the above technical solution, two consecutive flushings can significantly enhance the cleaning effect, ensuring that every corner and gap in the pipe can be fully cleaned, reducing the presence of residues, thereby providing a cleaner and more hygienic pipe environment. Since each flush can more effectively remove residues, it may actually reduce the number of subsequent additional cleanings, thereby reducing water consumption.

[0009] Preferably, the alkaline water in the alkaline water storage tank is used for three flushings to neutralize acid residues and clean the pipeline; The acid water in the acid water storage tank is used for four flushings to thoroughly clean the pipes and remove alkaline residues.

[0010] By adopting the above technical scheme, alkaline water is first used for flushing after the raw water is flushed, which can neutralize the acidic residues that may exist in the pipeline, help prevent the corrosion of the pipeline by acidic substances, and ensure that the subsequent acid water flushing can be carried out in a more neutral environment. Alkaline water has a good removal effect on some grease and protein-based dirt, and can preliminarily clean the pipeline. Subsequently, acid water is used for flushing, which can thoroughly clean the pipeline and remove alkaline residues and precipitates that may be produced by alkaline water flushing. Acid water has a good dissolving and removal ability for mineral deposits and alkaline dirt. Through the flushing sequence of alkali first and then acid, the acid and alkali residues in the pipeline can be effectively neutralized, the corrosion and damage to the pipeline can be reduced, and the service life of the pipeline can be extended. At the same time, through the acid-base neutralization reaction, the content of chemical residues in the pipeline can be reduced, ensuring that the liquid or gas in the pipeline will not be affected by chemical pollution during the transportation process.

[0011] Preferably, the detection device determines the degree of acidity or alkalinity by conductivity.

[0012] By adopting the above technical solution, the acidity and alkalinity of the liquid can be quickly determined by measuring the conductivity, so that a fast and automated detection process can be achieved, the detection efficiency can be greatly improved, and the acid and alkaline liquids can be quickly processed, or used for the next flushing, or entered into a recovery neutralization tank for neutralization, which is convenient for subsequent use. At the same time, the cost of equipment and reagents required for conductivity detection is relatively low, which helps to reduce the detection cost.

[0013] Preferably, the recovery and neutralization tank is equipped with a pH sensor, and a solenoid valve is arranged on the connecting pipe between the alkaline water recovery tank and the acid water recovery tank and the recovery and neutralization tank, and the solenoid valve is electrically connected to the pH sensor.

[0014] By adopting the above technical solution, the pH value in the recovery and neutralization tank is monitored in real time through the pH sensor to ensure that the pH value of the liquid in the tank is maintained within the preset range. When the pH value deviates from the preset range, the solenoid valve will automatically open or close to adjust the inflow of alkaline water or acid water, thereby accurately controlling the pH value in the recovery and neutralization tank, which is conducive to transporting water with a suitable pH value to the next raw water storage tank for the next equipment flushing, thereby further saving water.

[0015] Preferably, the recovery and neutralization tank is also equipped with a disinfection and sterilization device.

[0016] By adopting the above technical solution, a disinfection and sterilization device is installed in the recovery and neutralization tank to disinfect and sterilize the neutralized water to ensure the safety and stability of the water quality.

[0017] Preferably, a pressurizing system is provided at the connection points between the raw water storage tank, the alkaline water storage tank and the acid water storage tank and the pipeline to pressurize the flow rate of the liquid entering the pipeline.

[0018] By adopting the above technical solution, a pressurizing system is set up to pressurize the flow rate of the liquid entering the pipeline. The pressurized water flow has a stronger impact force and flow rate, can more effectively flush the inner wall of the pipeline, remove attached residues and dirt, can improve the flushing efficiency, and ensure that the residues in the pipeline are completely removed. At the same time, although the pressurizing system may consume a certain amount of energy, it actually reduces the overall water resource consumption by improving the flushing efficiency, because fewer flushing times can achieve the ideal cleaning effect, further reducing water consumption and realizing efficient use of water resources.

[0019] Preferably, a filter is provided in the wastewater storage tank, and the filter filters the flushing residues. The wastewater storage tank is connected to a non-domestic water storage tank, and the non-domestic water storage tank is used in non-food production fields.

[0020] By adopting the above technical solution, a filter is set up to filter the flushing residues, thereby obtaining relatively clean water resources. Although these water resources are not suitable for drinking or food production, they can be reused in non-food production fields to achieve effective recycling of water resources. The filtered wastewater is stored in a non-domestic water storage tank, reducing the burden on the environment caused by direct wastewater discharge.

[0021] A method for recycling flushing water using the flushing water recycling system comprises the following steps: Use raw water for initial flushing, and perform the initial flushing twice; Use alkaline water for alkaline flushing; Use acid water for acid flushing; Detect the acidity and alkalinity of the recovered alkaline and acid water; Liquids with qualified acidity and alkalinity are recycled and unqualified liquids are neutralized.

[0022] By adopting the above technical scheme, the method for reusing flushing water includes the following steps: the first step is to use raw water for preliminary flushing, and the preliminary flushing is performed twice; the second step is to use alkaline water for alkaline flushing; the third step is to use acid water for acidic flushing; the fourth step is to detect the acidity and alkalinity of the recovered alkaline water and acid water; the fifth step is to recycle and reuse the liquid with qualified acidity and alkalinity, and neutralize the unqualified liquid; through the above steps, not only the efficient use of water resources is achieved but also the sanitary quality of dairy products is improved.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Open the valve between the raw water storage tank and the dairy pipeline, push the raw water to the pipeline for preliminary flushing, rinse the residue in the pipeline, and the waste water after flushing flows into the wastewater recovery tank through the pipeline. Then close the raw water valve, open the valve between the alkaline water storage tank and the dairy pipeline, push the alkaline water to the pipeline, and perform alkaline flushing on the pipeline after preliminary flushing to remove acidic residues. The flushed liquid flows into the alkaline water recovery tank. Then, close the alkaline water valve, open the valve between the acid water storage tank and the dairy pipeline, push the acidic water to the pipeline, and perform acid flushing on the pipeline after alkaline flushing to remove alkaline residues. The flushing liquid flows into the acid water recovery tank and the alkaline water recovery tank. The detection device in the acid water recovery tank detects the acidity and alkalinity of the recovered liquid. The liquid with qualified acidity and alkalinity is transported back to the corresponding alkaline water storage tank and acid water storage tank for the next flushing. The liquid with unqualified acidity and alkalinity is transported to the recovery neutralization tank for neutralization with the raw water. The neutralized water enters the raw water storage tank to prepare for the next flushing. The recovered water can be used again after proper treatment to form a cycle. The recovery and reuse of wastewater greatly reduces the consumption of fresh water sources, realizes the efficient use of water resources, and thus reduces the amount of wastewater discharged. At the same time, through the alternating acid and alkali flushing, the residues in the pipeline are more effectively removed, and the sanitary quality of dairy products is improved; 2. By setting up a pressurized system to pressurize the flow rate of the liquid entering the pipeline, the pressurized water flow has a stronger impact force and flow rate, which can more effectively flush the inner wall of the pipeline, remove attached residues and dirt, improve the flushing efficiency, and ensure that the residues in the pipeline are completely removed. At the same time, although the pressurized system may consume a certain amount of energy, it actually reduces the overall water resource consumption by improving the flushing efficiency, because fewer flushing times can achieve the ideal cleaning effect, further reducing water consumption and realizing efficient use of water resources. DETAILED DESCRIPTION

[0024] The present application is described in further detail below.

[0025] The embodiment of the present application discloses a flushing water reuse system and a method thereof. The flushing water reuse system and the method thereof include a raw water storage tank, an alkaline water storage tank, an acid water storage tank, a waste water recovery tank, an alkaline water recovery tank, an acid water recovery tank and a recovery and neutralization tank.

[0026] Specifically, the raw water storage tank is used to store clean raw water, which is connected to the dairy pipeline through a valve. During the flushing process, the raw water in the raw water storage tank is pushed to the dairy pipeline to perform a preliminary flushing of the inside of the pipeline to remove the residue in the pipeline. The flushed wastewater flows into the wastewater recovery tank through the pipeline for storage. The wastewater recovery tank is also equipped with a filter to filter the residue generated during the flushing process. The filtered wastewater can be further utilized, such as for applications in non-food production fields, thereby improving the utilization efficiency of water resources.

[0027] The alkaline water storage tank stores alkaline water, which is also connected to the dairy pipeline through a valve. After the initial flushing is completed, the alkaline water in the alkaline water storage tank is pushed to the pipeline to perform alkaline flushing on the pipeline to remove the acid residue in the pipeline. The flushed liquid then flows into the alkaline water recovery tank for storage.

[0028] The acid water storage tank stores acidic water and is connected to the dairy pipeline. After the alkaline flushing is completed, the acidic water in the acid water storage tank is pushed to the pipeline for acid flushing to further remove the residue in the pipeline and remove the alkaline residue. The flushed liquid is stored in the acid water recovery tank.

[0029] Both the alkaline water recovery tank and the acid water recovery tank are equipped with detection devices for detecting the acidity and alkalinity of the recovered liquid. The detection device uses conductivity to judge the degree of acidity and alkalinity. When the detection device detects liquids with qualified acidity and alkalinity, these liquids will be transported back to the corresponding alkaline water storage tank and acid water storage tank for the next flushing. Liquids with unqualified acidity and alkalinity will be transported to the recovery neutralization tank for neutralization. Specifically, the recovery neutralization tank is equipped with a pH sensor, and a solenoid valve is set between the recovery neutralization tank and the alkaline water recovery tank and the acid water recovery tank. The solenoid valve is electrically connected to the pH sensor. The pH sensor monitors the pH in the recovery neutralization tank in real time to ensure that the pH value of the liquid in the tank is maintained within the preset range. When the pH value deviates from the preset range, the solenoid valve will automatically open or close to adjust the inflow of alkaline water or acid water, thereby accurately controlling the pH value in the recovery neutralization tank.

[0030] The recovery and neutralization tank is connected to the raw water storage tank. In the recovery and neutralization tank, unqualified liquid is neutralized with raw water, and the neutralized water is transported to the raw water storage tank to prepare for the next flushing. The recovery and neutralization tank is also equipped with a disinfection and sterilization device to disinfect and sterilize the neutralized water to ensure the safety and stability of the water quality.

[0031] It also includes a pressurization system, which is installed at the connection point between the raw water storage tank, alkaline water storage tank and acid water storage tank and the pipeline. The pressurized water flow has a stronger impact force and flow rate, can more effectively flush the inner wall of the pipeline, remove attached residue and dirt, can improve the flushing efficiency, and ensure that the residue in the pipeline is completely removed.

[0032] The implementation principle of a flushing water reuse system in an embodiment of the present application is as follows: open the valve between the raw water storage tank and the dairy product pipeline, push the raw water to the pipeline for preliminary flushing, flush the residue in the pipeline, and the waste water after flushing flows into the waste water recovery tank through the pipeline, then close the raw water valve, open the valve between the alkaline water storage tank and the dairy product pipeline, push alkaline water to the pipeline, perform alkaline flushing on the pipeline after preliminary flushing to remove acidic residues, and the liquid after flushing flows into the alkaline water recovery tank, then close the alkaline water valve, open the valve between the acid water storage tank and the dairy product pipeline, push acidic water to the pipeline, perform acid flushing on the pipeline after alkaline flushing to remove alkaline residues, and the liquid after flushing flows into The acid water recovery tank, the alkaline water recovery tank and the detection device in the acid water recovery tank test the acidity and alkalinity of the recovered liquid. The liquid with qualified acidity and alkalinity is transported back to the corresponding alkaline water storage tank and acid water storage tank for the next flushing. The liquid with unqualified acidity and alkalinity is transported to the recovery neutralization tank for neutralization with the raw water. The neutralized water enters the raw water storage tank to prepare for the next flushing. The recovered water can be used again after proper treatment to form a cycle. The recovery and reuse of wastewater greatly reduces the consumption of fresh water sources, realizes the efficient use of water resources, and thus reduces the amount of wastewater discharged. At the same time, through alternating acid and alkali flushing, the residue in the pipeline is more effectively removed, and the sanitary quality of dairy products is improved.

[0033] This embodiment provides a flushing water recycling method using a flushing water recycling system, the method comprising the following steps: S1: Use raw water for preliminary flushing, and perform preliminary flushing twice.

[0034] Open the valve between the raw water storage tank and the dairy pipeline, and push the raw water into the pipeline for preliminary flushing. The purpose of this step is to flush out the residue in the pipeline. The flushed wastewater flows into the wastewater recovery tank through the pipeline.

[0035] S2: Use alkaline water for alkaline washing.

[0036] Close the raw water valve, open the valve between the alkaline water storage tank and the dairy pipeline, and push the alkaline water into the pipeline for alkaline flushing. This step is to remove the acid residue in the pipeline. The flushed liquid flows into the alkaline water recovery tank.

[0037] S3: Use acid water for acid washing.

[0038] Close the alkaline water valve, open the valve between the acid water storage tank and the dairy pipeline, and push the acid water into the pipeline for acid flushing. This step is used to remove alkaline residues in the pipeline and thoroughly clean the pipeline. The flushed liquid flows into the acid water recovery tank.

[0039] S4: Detect the acidity and alkalinity of the recovered alkaline water and acid water.

[0040] The detection devices in the alkaline water recovery tank and the acid water recovery tank are used to test the acidity and alkalinity of the recovered liquid. The liquid with qualified acidity and alkalinity is transported back to the corresponding alkaline water storage tank and the acid water storage tank for the next flushing; the liquid with unqualified acidity and alkalinity is transported to the recovery neutralization tank for neutralization treatment.

[0041] S5: Recycle and reuse the liquid with qualified acidity and alkalinity, and neutralize the unqualified liquid.

[0042] The unqualified liquid is neutralized in the recovery and neutralization tank, and the neutralized water enters the raw water storage tank to prepare for the next flushing. This step realizes the recycling and reuse of wastewater and reduces the consumption of fresh water.

[0043] The implementation principle of the utilization method of a flushing water reuse system in the embodiment of the present application is: comprising the following steps: the first step is to use raw water for preliminary flushing, and the preliminary flushing is performed twice; the second step is to use alkaline water for alkaline flushing; the third step is to use acid water for acidic flushing; the fourth step is to detect the acidity and alkalinity of the recovered alkaline water and acid water; the fifth step is to recycle and reuse the liquid with qualified acidity and alkalinity, and neutralize the unqualified liquid; through the above steps, not only the efficient utilization of water resources is achieved but also the sanitary quality of dairy products is improved.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flushing water reuse system, Features: include: Raw water storage tanks, alkaline water storage tanks, acid water storage tanks, wastewater recovery tanks, alkaline water recovery tanks, acid water recovery tanks and recovery neutralization tanks; Clean raw water is stored in the raw water storage tank, which is connected to the dairy product pipeline that needs to be flushed through a valve to flush the residue inside the pipeline, and the waste water carrying the residue after flushing is stored in the waste water recovery tank; The alkaline water storage tank stores alkaline water, and the alkaline water storage tank is connected to the dairy product pipeline through a valve, and the pipeline is alkaline-flushed after preliminary flushing with raw water to remove acid residues in the pipeline, and the flushed liquid is stored in the alkaline water recovery tank; The acid water storage tank is connected to the dairy product pipeline through a valve, and acid water is stored inside. The pipeline after alkaline flushing is acid-flushed to remove alkaline residues in the pipeline, and the flushed liquid is stored in the acid water recovery tank; A detection device is arranged in the alkaline water recovery tank and the acid water recovery tank to detect the acidity and alkalinity in the alkaline water recovery tank and the acid water recovery tank. Liquid with qualified acidity and alkalinity is transported from the alkaline water recovery tank and the acid water recovery tank to the alkaline water storage tank and the acid water storage tank for next flushing, and liquid with unqualified acidity and alkalinity is transported to the recovery and neutralization tank; The recovery and neutralization tank is connected to the raw water storage tank, and the neutralized water enters the raw water storage tank to be used for the next flushing.

2. The flushing water recycling system according to claim 1, Features: The flushing water in the raw water storage tank flushes the pipeline for the first and second times.

3. The flushing water recycling system according to claim 1, Features: The alkaline water in the alkaline water storage tank is used for three flushings to neutralize acid residues and clean the pipelines; The acid water in the acid water storage tank is used for four flushings to thoroughly clean the pipes and remove alkaline residues.

4. The flushing water recycling system according to claim 1, Features: The detection device uses conductivity to judge the degree of acidity and alkalinity.

5. The flushing water recycling system according to claim 1, Features: The recovery and neutralization tank is equipped with a pH sensor, and a solenoid valve is arranged on the connecting pipe between the alkaline water recovery tank and the acid water recovery tank and the recovery and neutralization tank, and the solenoid valve is electrically connected to the pH sensor.

6. The flushing water recycling system according to claim 5, Features: The recovery and neutralization tank is also equipped with a disinfection and sterilization device.

7. The flushing water recycling system according to claim 1, Features: A pressurizing system is provided at the connection points between the raw water storage tank, the alkaline water storage tank and the acid water storage tank and the pipeline to pressurize the flow rate of the liquid entering the pipeline.

8. The flushing water recycling system according to claim 1, Features: A filter is arranged in the wastewater storage tank, and the filter filters the flushing residues. The wastewater storage tank is connected to a non-domestic water storage tank, and the non-domestic water storage tank is used in non-food production fields.

9. A method for utilizing the flushing water recycling system according to any one of claims 1 to 8, Features: The following steps are involved: Use raw water for initial flushing, and perform the initial flushing twice; Use alkaline water for alkaline flushing; Use acid water for acid flushing; Detect the acidity and alkalinity of the recovered alkaline and acid water; Liquids with qualified acidity and alkalinity are recycled and reused, while liquids that do not meet the standards are neutralized.