TWI402110B - Water recovery equipment cleaning method - Google Patents

Description

Water recycling equipment cleaning method

The invention is a cleaning method applied to a liquid device including a tank, a pipeline, and the like, and particularly relates to a water recycling type equipment cleaning method which can appropriately recycle wastewater and reuse waste water.

At present, equipment for filling, storing or transporting liquids (such as beverages, dairy products, etc.) containing barrels and pipes is required to ensure that the equipment is replaced with different types of liquids, or for equipment that meets food safety and hygiene regulations. During cleaning and maintenance, the liquid storage space and passage inside the equipment are usually cleaned.

The cleaning method of the equipment is mainly carried out by using fresh water to input the liquid that has been emptied of liquid, and rinsing the inside of the tank, the pipeline, etc. of the equipment by the water flow of the clean water and circulating it for a period of time, and then pressurizing The air is poured into the equipment, and the used wastewater is discharged from the tank of the equipment; the alkaline liquid is input into the equipment, and the residue in the tank, the pipeline, etc. of the equipment is dissolved by the alkaline liquid, and the alkali is made. After circulating the liquid in the equipment for a period of time, it is filled into the equipment with pressurized air, and the used alkaline liquid is discharged from the tank of the equipment, and is recycled and poured into the equipment, and the used alkali is used. The liquid is discharged from the tank of the equipment.

Secondly, using the clean water input device, the water tank of the water is flushed by the water flow of the clean water to circulate and flow for a period of time, and then the pressurized air is poured into the equipment to make the used waste water from the equipment. The entire tank is discharged; the acid liquid is used to input the equipment, and the residue in the tank, pipeline, etc. of the equipment is dissolved by the acidic liquid, and the acidic liquid is circulated in the equipment for a period of time, and then pressurized air is used for irrigation. Into the equipment, the used acidic liquid is discharged from the tank of the equipment, and is recycled and then poured into the equipment. After that, the used acidic liquid is discharged from the tank of the equipment.

In the water input device, the water is flushed by the water of the clean water to the inside of the tank, the pipeline, etc., and then pressurized air is used to fill the equipment, so that the used wastewater is discharged from the tank of the equipment; Fill the equipment to clean the tank, pipeline, etc., and then use the used wastewater from the tank of the equipment; after that, input it into the equipment with warm water and let it circulate in the equipment for a period of time before using it again. The warm water that has passed through is completely discharged from the tank of the equipment, and the cleaning operation of the equipment is completed.

It can be seen from the cleaning method of the front-end equipment that each cleaning step uses all the clean water and discharges all the used waste water, so that when the equipment is cleaned, it takes a lot of water consumption, and also discharges a large amount of waste water, and The large amount of wastewater must be treated with wastewater before it can be discharged to the outside world to avoid polluting the environment and waste water resources.

The main object of the present invention is to provide a water recycling type equipment cleaning method, which is designed to improve the disadvantages of excessive water consumption and waste water discharge in the existing equipment cleaning method.

In order to achieve the foregoing object, the water recycling device cleaning method designed by the present invention comprises: a preliminary water washing step, which is performed by using at least one time of injecting the recycled water into the device for a period of time, and then pouring the pressurized air into the device, The used wastewater is completely discharged from the device; the first cleaning liquid rinsing step is performed by using the first cleaning liquid at least once into the device, and the first cleaning liquid is used to remove the residue inside the device, and the first cleaning liquid is circulated in the device. After flowing for a period of time, the pressurized air is poured into the equipment, so that the used first cleaning liquid is discharged from the equipment; the first stage intermediate water washing step is to use the recovered water to be poured into the equipment at least once, and rinsed by the recycled water. The inside of the equipment is circulated and flowed for a period of time, and then pressurized air is poured into the equipment, so that the used recycled water is discharged from the equipment; the water discharged from the first stage intermediate washing step is discharged by the conductivity detecting means according to the recovery condition. The selective control step with the recovery is based on the measured conductivity, and the water whose conductivity is higher than the preset value is diverted and controlled. The water having a conductivity lower than a preset value is recovered; the second cleaning liquid rinsing step is performed by injecting the second cleaning liquid into the device at least once, and removing the residue inside the device by the second cleaning liquid, and making the second After the cleaning liquid circulates in the equipment for a period of time, it is poured into the equipment with pressurized air, so that the used second cleaning liquid is discharged from the equipment; the second stage intermediate water washing step is performed by using the recycled water at least once into the equipment. After flushing the inside of the equipment by circulating water and circulating it for a period of time, the pressurized air is poured into the equipment, so that the used recovered water is completely discharged from the equipment; the conductivity detection means according to the recovery condition to the second The selective control step of discharging and recovering the water discharged from the intermediate water washing step is based on the measured conductivity, and the water whose conductivity is higher than the preset value is divided and discharged, and the control conductivity is lower than the pre-control. The set value of water is recovered; the clean water washing step is to flush the equipment into the clean water input device, and then inject the pressurized air into the device, so that the used water is discharged from the device; The electric energy detecting means selectively controls the discharge and recovery of the water discharged by the water washing step according to the recovery condition, and controls the conductivity of the water higher than the preset value to be shunted based on the measured conductivity. Discharging and controlling the water whose conductivity is lower than the preset value; the warm water washing step is to discharge the equipment after circulating the water for a period of time in the warm water input device; and the conductivity detecting means according to the recovery condition The selective control step of discharging and recovering the water discharged from the warm water washing step is based on the measured conductivity, and the water whose conductivity is higher than the preset value is diverted and discharged, and the control conductivity is lower than the pre-control. The set value of water is recovered.

The invention is designed by the foregoing water recycling equipment cleaning method. Compared with the prior equipment cleaning method, the invention is mainly characterized by reviewing the water discharged from each cleaning step and utilizing the conductivity from the cleaning equipment. The detection means determines whether the discharged water meets the conditions for recyclability, and recovers the recyclable water, and returns the water for the preliminary washing and the intermediate washing step of each stage, thus reducing the total water consumption of the cleaning equipment. At the same time, it also reduces wastewater discharge and wastewater treatment costs.

As shown in the first figure, a schematic flow chart of the water recycling type cleaning method of the present invention is disclosed. The water recovery type equipment cleaning method mainly comprises a preliminary water washing step, a first cleaning liquid washing step, a first stage intermediate water washing step, and discharging the water discharged from the first stage intermediate water washing step according to the recovery condition by the conductivity detecting means. Selective control step with recovery, second cleaning liquid washing step, second stage intermediate water washing step, selective control of discharge and recovery of water discharged from the second stage intermediate water washing step by conductivity detection means according to recovery conditions The step of cleaning the water, the selective control step of discharging and recovering the water discharged from the water washing step by the conductivity detecting means, the step of washing the warm water, and the recycling condition by the conductivity detecting means Selective control steps for discharging and recovering the water discharged from the warm water washing step, wherein the preliminary water washing step is performed by using the recovered water at least once into the tank, the pipeline, etc. of the equipment, and recycling the water to the equipment. After the internal circulation has flowed for a period of time, it is poured into the equipment with pressurized air, and the used wastewater is taken from the tank of the equipment or Road full discharge, in the present preferred embodiment, this preliminary step may be recovered washing water inside the second washing equipment.

The first cleaning liquid rinsing step is carried into the device at least once by using a certain concentration of alkaline or acidic liquid, which is based on the acid or alkali of the liquid (such as dairy, carbonated beverage, juice, etc.) originally stored or transported by the device. The alkaline liquid or the acidic liquid is selected as the characteristic, and the residue in the tank, the pipeline, etc. of the equipment is removed (for example, neutralized, dissolved, corroded, etc.) by the first cleaning liquid (alkaline or acidic liquid), and After the first cleaning liquid is circulated in the apparatus for a period of time, the pressurized air is poured into the apparatus, and the used first cleaning liquid is completely discharged from the tank or the pipeline of the apparatus, in the preferred embodiment. The alkaline liquid washing water washing step may divide the first cleaning liquid into the inside of the equipment twice.

The first stage intermediate water washing step is to inject the water into the equipment at least once by using the recycled water, and the inside of the tank, the pipeline, and the like of the equipment is flushed by the recycled water and circulated for a certain period of time, and then the pressurized air is poured into the equipment. The used recovered water is discharged from the tank or the pipeline of the apparatus. In the preferred embodiment, the first stage intermediate washing step can recover the inside of the secondary flushing apparatus.

The selective control step of discharging and recovering the water discharged from the first stage intermediate water washing step by the conductivity detecting means according to the recovery condition is, in the preferred embodiment, using the PLC program time control means for discharging The water is detected at each predetermined time point, and based on the measured conductivity, when it is judged that the conductivity is higher than the preset value of water (ie, the wastewater to be discharged), the water is discharged; when it is judged to be conductive Water below the preset value (ie, recyclable water) is recycled for reuse.

The second cleaning liquid rinsing step is performed by injecting the second cleaning liquid with a certain concentration into the device at least once, and the second cleaning liquid dissolves the residue inside the barrel, the pipeline, and the like of the device, and the second cleaning liquid may be An acidic liquid or an alkaline liquid, wherein when the first cleaning liquid is an alkaline liquid, the second cleaning liquid is preferably an acidic liquid; when the first cleaning liquid is an acidic liquid, the second cleaning liquid is an alkaline liquid. good. After the second cleaning liquid is circulated in the device for a period of time, the pressurized air is poured into the device, and the used second cleaning liquid is completely discharged from the tank or the pipeline of the device. In the example, the second cleaning liquid washing water washing step may divide the second cleaning liquid into the inside of the equipment twice.

The second stage intermediate water washing step is to inject the water into the equipment at least once by using the recycled water, and the inside of the tank, the pipeline, and the like of the equipment is flushed by the recycled water and circulated for a certain period of time, and then the pressurized air is poured into the equipment. The used recovered water is discharged from the tank or the pipeline of the apparatus. In the preferred embodiment, the second stage intermediate water washing step can recover the inside of the water secondary flushing apparatus.

The selective control step of discharging and recovering the water discharged from the second stage intermediate water washing step by the conductivity detecting means according to the recovery condition, in the preferred embodiment, using the PLC program time control means for discharging The water is detected at each predetermined time point, and based on the measured conductivity, when it is judged that the conductivity is higher than the preset value of water (ie, the wastewater to be discharged), the water is discharged; when it is judged to be conductive Water below the preset value (ie, recyclable water) is recycled for reuse.

The clean water washing step is to input the water into the equipment, and flush the inside of the tank, the pipeline, etc. of the equipment by the water flow of the clean water, and then inject the pressurized air into the equipment, so that the used water is taken from the tank or the pipeline of the equipment. discharge.

The selective control step of discharging and recovering the water discharged from the water washing step by the conductivity detecting means according to the recovery condition, in the preferred embodiment, using the time control means of the PLC program to discharge the water Conductivity detection is performed at each predetermined time point, and based on the measured conductivity, when it is judged that the conductivity is higher than the preset value of water (that is, the wastewater to be discharged), the discharge is performed; when the conductivity is low, The water at the preset value (ie, water that can be recycled and reused) is recycled and reused.

The warm water washing step is to circulate the water in the warm water input device for a certain period of time, and then the used warm water is discharged from the tank or the pipeline of the device.

The selective control step of discharging and recovering the water discharged by the warm water washing step by the conductivity detecting means according to the recovery condition, in the preferred embodiment, using the PLC program time control means for discharging The water is detected at each predetermined time point, and based on the measured conductivity, when it is judged that the conductivity is higher than the preset value of water (ie, the wastewater to be discharged), the water is discharged; when it is judged to be conductive Water below the preset value (ie, recyclable water) is recycled for reuse.

The invention is designed by the foregoing water recovery type device cleaning method, which is configured to use the first cleaning liquid, the second cleaning liquid to rinse, and the multiple water washing steps to further discharge the cleaning steps in a state where the equipment is actually cleaned. Appropriate selective recovery of reusable water in water, returning water for preliminary washing and intermediate washing steps in each stage, thereby reducing the total water consumption required for cleaning equipment, while also reducing wastewater discharge and wastewater treatment costs. . Therefore, the present invention is indeed a very economical invention in the field of equipment cleaning.

The first figure is a schematic flow chart of the water recycling type cleaning method of the present invention.

Claims (5)

A water recovery type equipment cleaning method comprises: a preliminary water washing step, which uses a recycled water to be circulated into the equipment at least once for a period of time, and then is poured into the equipment with pressurized air, and the used wastewater is completely discharged from the equipment; The first cleaning liquid rinsing step is performed by injecting the first cleaning liquid into the device at least once, and the residue in the device is removed by the first cleaning liquid, and the first cleaning liquid is circulated in the device for a period of time, and then pressurized. The air is poured into the equipment, so that the used first cleaning liquid is discharged from the equipment; the first stage intermediate water washing step is to use the recycled water to be poured into the equipment at least once, and the inside of the equipment is rinsed by the recycled water and circulated for a period of time, and then The pressurized air is poured into the equipment, and the used recycled water is discharged from the equipment; the selective control step of discharging and recovering the water discharged from the first stage intermediate washing step by the conductivity detecting means according to the recovery condition is Based on the measured conductivity, the water whose conductivity is higher than the preset value is controlled to be branched and discharged, and the water whose conductivity is lower than the preset value is controlled. Recycling; the second cleaning liquid rinsing step is performed by using the second cleaning liquid at least once into the device, removing the residue inside the device by the second cleaning liquid, and circulating the second cleaning liquid in the device for a period of time, Then, the pressurized air is poured into the device, and the used second cleaning liquid is discharged from the device; the second stage intermediate water washing step is performed by using the recycled water at least once into the device, and the inside of the device is washed and recovered by the recycled water. After circulating for a period of time, the pressurized air is poured into the equipment, so that the used recovered water is discharged from the equipment; the conductivity detection means discharges the water discharged from the second stage intermediate washing step according to the recovery condition. The selective control step of the recovery, and based on the measured conductivity, the water whose conductivity is higher than the preset value is controlled to be diverted and discharged, and the water whose conductivity is lower than the preset value is recovered; the water washing step, The equipment is flushed in the water input device, and then pressurized air is used to fill the device, so that the used water is discharged from the device; the conductivity detection means according to the recovery condition The selective control step of discharging and recovering the water discharged from the water washing step is based on the measured conductivity, and the water whose conductivity is higher than the preset value is diverted and discharged, and the control conductivity is lower than the preset value. The water is recovered; the warm water washing step is performed after circulating the equipment in a warm water input device for a period of time; and the water discharged from the warm water washing step is performed by the conductivity detecting means according to the recovery condition. The selective control step of discharge and recovery is based on the measured conductivity, and the water whose conductivity is higher than the preset value is controlled to be branched and discharged, and the water whose conductivity is lower than the preset value is recovered. The method for cleaning a water recovery type device according to the first aspect of the invention, wherein the selective detection step of discharging and recovering the water discharged from the first stage intermediate water washing step by the conductivity detecting means according to the recovery condition is The conductivity of the PLC program is used to detect the conductivity at each preset time point; the conductivity detection means selectively controls the discharge and recovery of the water discharged from the second stage intermediate water washing step according to the recovery condition. In the step, the conductivity of the PLC program is detected at each preset time point; the conductivity detection means selectively controls the discharge and recovery of the water discharged from the water washing step according to the recovery condition. In the step, the conductivity of the PLC program is used to detect the conductivity at each preset time point; and the conductivity detection means selects the discharge and recovery of the water discharged from the warm water washing step according to the recovery condition. In the sexual control step, the conductivity of the PLC program is used to detect the conductivity at each preset time point. The water recovery type equipment cleaning method according to claim 1 or 2, wherein the preliminary water washing step is to recycle the water inside the secondary water washing device; the first cleaning liquid washing step is to divide the first cleaning liquid into two times. Internal; the first stage intermediate water washing step is to recirculate the inside of the equipment to recover the water; the second cleaning liquid washing step is to rinse the inside of the equipment twice with the second cleaning liquid; the second stage intermediate water washing step is to flush the water twice. Inside the device. The method for cleaning a water recovery type device according to claim 3, wherein the first cleaning liquid is an alkaline liquid, and the second cleaning liquid is an acidic liquid. The method for cleaning a water recovery type device according to claim 3, wherein the first cleaning liquid is an acidic liquid, and the second cleaning liquid is an alkaline liquid.