CN115321718A - Energy-saving and water-saving dyeing and finishing process of polyester woven grey fabric - Google Patents

Abstract

The invention provides an energy-saving and water-saving dyeing and finishing process of polyester woven grey cloth, which relates to the technical field of grey cloth dyeing and finishing, wherein the grey cloth dyeing and finishing is performed by adding water, a dyeing and finishing device is operated to run, a water adding operation program of the device is started, the device adds water to a position where the grey cloth is put in for dyeing, the water is added according to a required water level when the device dyes the grey cloth, and the operation program is closed; and adding a dye, namely selecting the dye corresponding to the grey cloth dyeing requirement, and adding the dye into the equipment. According to the invention, through designing the wastewater treatment and neutralization regulation, impurities and peculiar smell which are retained after dyeing of the grey cloth are filtered and purified in the mixed solution, the phenomenon of peculiar smell diffusion is reduced, the green environmental protection measures of the equipment are improved, the mixed solution has a good neutralization reaction effect during neutralization regulation, the efficiency of neutralizing the mixed solution by using a neutralizer to obtain a water source is improved, the mixed solution has the characteristic of recycling the obtained water resource, and the water and energy saving performance during dyeing and finishing of the grey cloth is improved.

Description

Energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric

technical field

The invention relates to the technical field of gray cloth dyeing and finishing, in particular to an energy-saving and water-saving dyeing and finishing process for polyester woven gray cloth.

Background technique

Gray cloth dyeing and finishing, gray cloth refers to natural color cotton cloth for printing and dyeing processing, industrial gray cloth generally refers to cloth, or laminated gray cloth, glued gray cloth, etc. Dyeing and finishing refers to the treatment of textile materials (fibers, yarns and fabrics) ) for chemical treatment-based processes.

But in the prior art, after the existing gray cloth is dyed and finished, when the cleaning process is carried out, most of the remaining mixed solution that finishes dyeing the gray cloth is directly discharged to the outside, and the remaining mixed solution of the dyed gray cloth The liquid usually carries a lot of impurities and has a peculiar smell, and if it is discharged directly to the outside, it is very easy to cause the mixed liquid to pollute the environment, causing the mixed liquid to not have a relatively good treatment method when it is discharged, resulting in gray fabrics that are not dyed and finished. Good green environmental protection measures lead to the mixed liquor not having relatively good reusable characteristics, which seriously affects the energy-saving and water-saving measures of gray cloth dyeing and finishing treatment.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art. After finishing the dyeing and finishing treatment of the gray cloth, most of the mixed liquor used does not have a good treatment method, and it is directly discharged to the outside, which is easy to cause pollution to the environment and reduce the mixed liquor. The characteristics of liquid reuse affect the energy saving and water saving measures of gray cloth dyeing and finishing.

In order to achieve the above object, the present invention adopts the following technical scheme: the energy-saving and water-saving dyeing and finishing process of polyester woven gray cloth, comprising the following steps:

S1, gray cloth printing and dyeing;

S2, waste water treatment;

S3, neutralization adjustment;

S4, reuse.

By adopting the above technical scheme: by designing wastewater treatment, the mixed solution after gray cloth dyeing can have a good treatment function; Utilization makes the mixed solution after neutralization and preparation have a good reusability function.

As a preferred embodiment, in the step S1:

1), add water;

2), adding dyes;

3), fully mixed;

4), put gray cloth;

5), gray cloth dyeing treatment.

By adopting the above-mentioned technical scheme: adding water and dyeing agent before putting gray cloth into the design, so that the gray cloth has the characteristics of clearly distinguishing whether the mixed solution meets the dyeing requirements of gray cloth before dyeing, reducing the occurrence of non-standard dyeing of gray cloth during the dyeing process. It can improve the efficiency of gray cloth dyeing and improve the effect of gray cloth dyeing.

As a preferred embodiment, in the step 1:

1.1) Operate the dyeing and finishing equipment, start the equipment water adding operation program, the equipment will add water to the position where the gray cloth is put into printing and dyeing, complete the water filling according to the required water level of the equipment for gray cloth printing and dyeing, and close the operation program;

1.2), select the dye corresponding to the gray cloth dyeing demand, and add it to the inside of the equipment;

1.3) Stir and mix the injected dye with water, so that the liquid presents the required color corresponding to gray cloth dyeing. During the mixing process, a mixing test is required to ensure that the dye and water are fully mixed;

1.4), put gray cloth into the inside of the equipment, and the gray cloth is in contact with the mixed liquid;

1.5), the operation equipment program is started, the equipment runs and dyes the gray cloth that is put into the interior and is in contact with the mixed liquid, so that the gray cloth is dyed inside the equipment.

By adopting the above-mentioned technical scheme: through the design to detect the mixed solution after adding the dye and stirring, to ensure that the dye and the water source are fully mixed, and to avoid the phenomenon of uneven dyeing of the gray cloth during the dyeing process caused by insufficient mixing, resulting in gray cloth The dyeing effect of the finished product is not good, and the dyeing effect of the finished gray cloth is improved.

As a preferred embodiment, in the step S2:

1), take out the finished gray cloth of dyeing;

2), control the equipment to discharge the mixed liquid;

3), the mixed solution is filtered;

4) Clean the filter mechanism;

5), purifying the filtered mixed solution.

By adopting the above-mentioned technical scheme: through designing and processing the mixed liquid, the mixed liquid discharged from the inside of the equipment has good treatment characteristics, so that the mixed liquid after dyeing the gray cloth can be filtered and purified after being discharged from the inside of the equipment, reducing the mixing The environment is polluted by the phenomenon that the liquid is directly discharged outside the equipment after the gray cloth is dyed, and the environmental protection measures are improved after the gray cloth dyeing wastewater is discharged, and the green environmental protection measures are improved when the gray cloth is dyed.

As a preferred embodiment, in the step S2:

2.1) After the gray cloth has been dyed inside the equipment, the operating equipment is stopped, and the dyed gray cloth is taken out from the inside of the equipment;

2.2), operate the equipment, so that the equipment discharges the mixed solution that has finished dyeing the gray cloth inside;

2.3), the mixed solution is discharged from the inside of the equipment and enters the inside of the filter mechanism, and the filter mechanism filters and purifies the mixed solution discharged from the inside of the equipment, removes the remaining impurities in the mixed solution after the gray cloth is dyed, and obtains the filtrate;

2.4) After all the discharged mixed liquid is filtered and purified by the filter mechanism, remove and clean the filter assembly inside the filter mechanism, and clean the impurities retained in the filter mechanism after filtering and purifying the mixed liquid. After cleaning, put it back to filter again the interior of the institution;

2.5) Perform odor removal treatment on the filtrate obtained through filtration, add relevant deodorants to the filtrate to remove odor, and obtain a purified liquid.

By adopting the above technical scheme: filter the mixed solution through design, so that the mixed solution has good characteristics of filtering impurities after the gray cloth is dyed and discharged from the inside of the equipment, and the filter mechanism can be cleaned to keep the filter mechanism in good condition. Filter the impurities carried in the mixed liquid, improve the effect of filtering impurities in the mixed liquid, and purify the filtered mixed liquid through design, so that the filtered mixed liquid can be purified to remove odors and make the mixed liquid odorless.

As a preferred embodiment, in the step S3:

1) Temperature measurement and temperature adjustment of the purification liquid;

2) Add a neutralizer to the purification solution.

By adopting the above-mentioned technical scheme: by designing temperature measurement and adjusting temperature and adding neutralizer, the mixed solution after filtration and purification has good neutralization and adjustment treatment, reducing the phenomenon of a large amount of waste of water caused by the direct discharge of the mixed solution, and improving the gray cloth in The water saving feature used in dyeing treatment improves the energy saving and water saving feature of gray cloth dyeing.

As a preferred embodiment, in the step S3:

3.1), measure the temperature of the purification solution after purification, and measure whether the temperature of the purification solution meets the temperature requirements of neutralization treatment. If it does not meet the requirements, adjust the temperature of the purification solution to make the temperature of the purification solution reach the neutralization temperature and the temperature required for processing;

3.2) Add relevant neutralizing agent to the purified liquid after temperature adjustment, so that the purified liquid can be neutralized by the added neutralizing agent to obtain water source.

By adopting the above technical scheme: through the design of temperature measurement and temperature adjustment treatment on the purification obtained after purification, the purification liquid can be neutralized and adjusted normally, so as to avoid the incompatibility of the temperature of the purified liquid during neutralization and adjustment. This causes the phenomenon that the neutralization effect of the purified liquid is too slow during neutralization and adjustment, and improves the efficiency of the neutralization and adjustment of the purification liquid.

As a preferred embodiment, in the step S4: after the mixed solution for dyeing the gray cloth is discharged from the inside of the equipment, the water source is obtained after treatment and neutralization, and the obtained water source is stored. When the equipment dyes the gray cloth again During the dyeing process, the water source obtained from the storage is added to the inside of the equipment for mixing.

By adopting the above-mentioned technical scheme: storing the water source obtained after neutralization and adjustment by design, so that the obtained water source has good storage characteristics, reducing the water source required by the equipment when the gray cloth is dyed, and reducing the re-added water source inside the equipment, Improve the efficiency of adding water to the equipment, so that the water source obtained from the mixed liquid discharged from the equipment after treatment and neutralization has good reusability characteristics, and reduce the water source consumed when the gray cloth is dyed through the equipment.

Compared with prior art, advantage and positive effect of the present invention are,

1. In the present invention, through the design of wastewater treatment and neutralization adjustment, the mixed liquid discharged from the inside of the equipment is filtered and purified, so that the impurities and odors remaining in the mixed liquid after the gray cloth is dyed are filtered and purified, and the mixed liquid is filtered and mixed. The impurities carried in the liquid, purify the odor carried in the mixed liquid, reduce the phenomenon of odor diffusion, improve the green environmental protection measures of the equipment, make the mixed liquid have a good neutralization reaction effect during neutralization and adjustment, and improve the utilization of the mixed liquid The efficiency of the neutralizing agent to obtain water source through the neutralization reaction makes the mixed solution have the characteristics of processing and obtaining water resources for repeated use, and improves the water saving and energy saving performance of gray cloth dyeing and finishing.

2. In the present invention, the filter mechanism is cleaned by design, so that the filter assembly inside the filter mechanism has the characteristics of being operable and disassembled, which reduces the difficulty of cleaning the filter assembly, improves the convenience of cleaning the filter assembly, and improves the use of the filter mechanism to filter. The component can filter the impurities in the mixed liquid, and improve the efficiency of the filter liquid to remove the peculiar smell with the help of the deodorant.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

The invention provides a technical solution: an energy-saving and water-saving dyeing and finishing process for polyester woven gray cloth, which includes the following steps: printing and dyeing the gray cloth, adding water, operating the dyeing and finishing equipment, starting the water adding operation program of the equipment, and adding water to the position where the gray cloth is put into printing and dyeing Add water according to the water level required by the equipment for gray cloth printing and dyeing, and close the operation program; add dye, select the dye corresponding to the gray cloth dyeing demand, and add it to the inside of the equipment; mix fully, and mix the dye and water , so that the liquid presents the required color corresponding to the dyeing of the gray cloth. During the mixing process, a mixing test is required to ensure that the dye and water are fully mixed. By adopting the above technical scheme: the mixed solution after adding the dye and stirring is designed. Inspection, to ensure that the dye is fully mixed with the water source, to avoid the phenomenon of uneven dyeing of the gray cloth during the dyeing process caused by insufficient mixing, resulting in poor dyeing effect of the finished gray cloth, and improving the dyeing effect of the finished gray cloth. The gray cloth is put into the interior, and the gray cloth is in contact with the mixed liquid; the gray cloth is dyed, the operating equipment program is started, the equipment is running, and the gray cloth that is in contact with the mixed liquid is dyed internally, so that the gray cloth is dyed inside the equipment , through the design of adding water and adding dyes before adding the gray cloth, so that the gray cloth has the characteristics of clearly distinguishing whether the mixed solution meets the dyeing requirements of the gray cloth before dyeing, reducing the phenomenon that the dyeing of the gray cloth is not up to standard during the dyeing process and adding dyes, and improving The efficiency of gray cloth dyeing improves the effect of gray cloth dyeing; waste water treatment, through the design of waste water treatment, makes the mixed solution after gray cloth dyeing have a good processing function, takes out the dyed gray cloth, and the gray cloth is dyed inside the equipment After the treatment, the operating equipment stops running, and the gray cloth that has been dyed is taken out from the inside of the equipment; the equipment is operated to discharge the mixed liquid, and the equipment is operated to make the equipment discharge the mixed liquid that has finished dyeing the gray cloth inside; the mixed liquid is discharged. Filtration treatment, the mixed liquid is discharged from the inside of the equipment and enters the inside of the filter mechanism, the filter mechanism filters and purifies the mixed liquid discharged from the inside of the equipment, removes the remaining impurities in the mixed liquid after the gray cloth is dyed, and obtains the filtrate, through the design Filter the mixed liquid so that the mixed liquid has good characteristics of filtering impurities after the gray cloth is dyed and discharged from the inside of the equipment; the filter mechanism is cleaned, and after all the discharged mixed liquid is filtered and purified by the filter mechanism, the The filter assembly inside the filter mechanism is dismantled and cleaned to clean the impurities retained in the filter mechanism after filtering and purifying the mixed liquid. After cleaning, it is reinstalled inside the filter mechanism to clean the filter mechanism so that the filter mechanism can maintain good filtration The impurities carried in the mixed liquid can improve the filtering effect of impurities in the mixed liquid; the filtered mixed liquid is purified, the filtered liquid obtained after filtration is subjected to odor removal treatment, and relevant deodorants are added to the filtered liquid Remove the peculiar smell to obtain the purification solution, and purify the filtered mixed solution through design, so that the filtered mixed solution can be purified Eliminate peculiar smell and make the mixed liquid achieve odorless effect. Through the design of the mixed liquid, the mixed liquid discharged from the inside of the equipment has good treatment characteristics, so that the mixed liquid after dyeing the gray cloth can be filtered after being discharged from the inside of the equipment. Purification, reduce the phenomenon that the mixed liquid is directly discharged outside after dyeing the gray cloth inside the equipment to cause environmental pollution, improve the protection measures for the environment after the waste water is discharged after dyeing the gray cloth, and improve the green environmental protection measures when the gray cloth is dyed; And adjustment, through the design of neutralization and adjustment, the mixed liquid after treatment has a good function of neutralization and adjustment. The temperature of the purified liquid is measured and adjusted. The temperature requirements of neutralization treatment, if it does not meet the requirements, adjust the temperature of the purification solution to make the temperature of the purification solution reach the temperature required for neutralization treatment, and measure and adjust the temperature of the purification obtained after purification by design Temperature treatment, so that the purification liquid can be neutralized and adjusted normally, avoiding the incompatibility of the temperature of the purified liquid during neutralization and adjustment, causing the phenomenon that the neutralization effect of the purified liquid is too slow during neutralization and adjustment, and improving the purification liquid Efficiency of neutralization and adjustment; adding a neutralizer to the purification solution, adding relevant neutralizers to the purification solution after temperature adjustment, so that the purification solution can be neutralized with the added neutralizer, and the water source can be obtained through the design Temperature measurement and temperature adjustment and addition of neutralizing agent, so that the mixed solution after filtration and purification has a good neutralization and adjustment treatment, reducing the phenomenon of a large amount of waste of water caused by the direct discharge of the mixed solution, and improving the saving of water used in the dyeing process of gray fabrics Features, improve the energy-saving and water-saving characteristics of gray cloth dyeing; reuse, through the design of repeated use, the mixed solution after neutralization and adjustment has a good reusable function, after the mixed solution for dyeing the gray cloth is discharged from the inside of the equipment, after After treatment and neutralization, the water source is obtained, and the obtained water source is stored. When the equipment dyes the gray cloth again, the stored water source is added to the interior of the equipment for mixing, and the water source obtained after neutralization and adjustment is designed to be stored. , so that the obtained water source has good storage characteristics, reduce the water source required by the equipment when the gray cloth is dyed, reduce the water source re-added inside the equipment, improve the efficiency of adding water to the equipment, and make the mixed liquid discharged from the inside of the equipment after treatment and The water source obtained after neutralization has good characteristics of reuse, which reduces the water source consumed when the gray cloth is dyed through the equipment.

The working principle of this embodiment:

When dyeing, start the equipment to run, and operate the equipment to add water to the inside of the equipment. The equipment adds water to the position where the gray cloth is put into printing and dyeing. The water is added according to the required water level of the equipment for gray cloth printing and dyeing. After the water is added, the corresponding water source is put in. Dyeing agent, select the dyeing agent corresponding to the gray cloth dyeing demand, add it to the water source inside the equipment, operate the equipment to stir and mix the water source after the dyeing agent is put in, and mix the added dyeing agent with water to obtain a mixed solution, so that the liquid appears Produce the required color corresponding to the gray cloth dyeing. During the mixing process, a mixing test is required to ensure that the dye and water are fully mixed. After the dye and water are fully mixed, the gray cloth is put into the inside of the equipment, and the gray cloth and the mixed liquid contact with each other and immerse in the mixed liquid, the operating equipment program is started, the equipment runs and dyes the gray cloth that is put into the interior and is in contact with the mixed liquid, so that the gray cloth is dyed inside the equipment. The dyed gray cloth is taken out from the interior of the machine, and the equipment is drained. The operating equipment discharges the mixed liquid used for dyeing the gray cloth. The mixed liquid is discharged from the inside of the equipment and enters the filter mechanism. The mixed solution is filtered to remove the remaining impurities in the mixed solution after the gray cloth is dyed to obtain the filtrate. After the discharged mixed solution is completely filtered by the filter mechanism, the filter components inside the filter mechanism are removed and cleaned, and the filter mechanism is cleaned. After the mixed liquid is filtered and purified, the remaining impurities are put back into the filter mechanism again after cleaning, and the filtered liquid is subjected to odor removal treatment, and the relevant deodorant is added to the filtered liquid for odor removal. , to obtain the purification solution, measure the temperature of the purification solution after purification, and measure whether the temperature of the purification solution meets the temperature requirements of neutralization treatment. If it does not meet the requirements, then adjust the temperature of the purification solution to make the temperature of the purification solution Reach the temperature required for neutralization treatment, add relevant neutralizers to the purified solution after temperature adjustment, so that the purified solution can be neutralized with the added neutralizer, obtain water source, and complete the gray cloth from the inside of the equipment After the dyed mixture is discharged, the water source is obtained after treatment and neutralization, and the obtained water source is stored. When the equipment dyes the gray cloth again, the stored water source is added to the interior of the equipment for mixing.

Comparative example 1

This embodiment is roughly the same as the method provided in Example 1, the main difference being that the mixed solution is not treated when the mixed solution is discharged after the gray cloth is dyed;

Comparative example 2

The method of this embodiment is substantially the same as that of the provided embodiment 1, the main difference is that in the wastewater treatment in step S2, the mixed solution is not deodorized during treatment.

Comparative example 3

The method of this embodiment is substantially the same as that of the provided embodiment 1, the main difference is that: in step S3, the neutralization agent is used, and the purification liquid is not subjected to temperature measurement and temperature adjustment treatment.

Performance Testing

According to the detection method of GSB04-1767-2004, the results of environmental protection, peculiar smell and temperature suitability of the mixed solution provided by equal amounts of embodiment 1 and comparative examples 1 to 3 were taken respectively:

Environmental protection Odor Temperature adaptability Example 1 85% 96% 96% Comparative example 1 75% 88% 90% Comparative example 2 80% 90% 93% Comparative example 3 83% 94% 95%

By analyzing the relevant data in the above-mentioned tables, it can be seen that by the present invention, waste water treatment and neutralization adjustment are designed, and the mixed solution discharged from the inside of the equipment is filtered and purified, so that the impurities and impurities remaining in the mixed solution after dyeing the gray cloth are completed. Filter and purify the peculiar smell, filter the impurities carried in the mixed liquid, purify the peculiar smell carried in the mixed liquid, reduce the phenomenon of the spread of the peculiar smell, improve the green environmental protection measures of the equipment, and clean the filter mechanism through the design, so that the inside of the filter mechanism The filter assembly has the characteristics of operability and disassembly, which reduces the difficulty of cleaning the filter assembly, improves the convenience of cleaning the filter assembly, improves the efficiency of the filter mechanism to filter impurities in the mixed liquid by the filter assembly, and improves the filtration of the filter liquid with the help of deodorant. The efficiency of odor removal, by means of temperature measurement and temperature adjustment of the obtained purification liquid, makes the purification liquid have good temperature adaptability, ensures that the temperature of the purification liquid reaches the temperature suitable for neutralization and adjustment, and improves the water source obtained after the purification liquid is neutralized and adjusted s efficiency.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.

Claims (8)

1. The energy-saving and water-saving dyeing and finishing process of polyester woven gray cloth is characterized in that it comprises the following steps: S1, gray cloth printing and dyeing; S2, waste water treatment; S3, neutralization adjustment; S4, reuse. 2. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 1, characterized in that: in the step S1: 1), add water; 2), adding dye; 3), fully mixed; 4), put gray cloth; 5), gray cloth dyeing treatment. 3. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 2, characterized in that: in the step 1: 1.1) Operate the dyeing and finishing equipment, start the equipment water adding operation program, the equipment will add water to the position where the gray cloth is put into printing and dyeing, complete the water filling according to the required water level of the equipment for gray cloth printing and dyeing, and close the operation program; 1.2), select the dye corresponding to the gray cloth dyeing demand, and add it to the inside of the equipment; 1.3) Stir and mix the injected dye with water, so that the liquid presents the required color corresponding to gray cloth dyeing. During the mixing process, a mixing test is required to ensure that the dye and water are fully mixed; 1.4), put gray cloth into the inside of the equipment, and the gray cloth is in contact with the mixed liquid; 1.5), the operation equipment program is started, the equipment runs and dyes the gray cloth that is put into the interior and is in contact with the mixed liquid, so that the gray cloth is dyed inside the equipment. 4. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 1, characterized in that: in the step S2: 1), take out the finished gray cloth of dyeing; 2), control the equipment to discharge the mixed liquid; 3), the mixed solution is filtered; 4) Clean the filter mechanism; 5), purifying the filtered mixed solution. 5. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 4, characterized in that: in the step S2: 2.1) After the gray cloth has been dyed inside the equipment, the operating equipment is stopped, and the dyed gray cloth is taken out from the inside of the equipment; 2.2), operate the equipment, so that the equipment discharges the mixed solution that has finished dyeing the gray cloth inside; 2.3), the mixed solution is discharged from the inside of the equipment and enters the inside of the filter mechanism, and the filter mechanism filters and purifies the mixed solution discharged from the inside of the equipment, removes the remaining impurities in the mixed solution after the gray cloth is dyed, and obtains the filtrate; 2.4) After all the discharged mixed liquid is filtered and purified by the filter mechanism, the filter assembly inside the filter mechanism is removed and cleaned, and the impurities retained in the filter mechanism after filtering and purifying the mixed liquid are cleaned, and then put back to filter again after cleaning the interior of the institution; 2.5) Perform odor removal treatment on the filtrate obtained through filtration, add relevant deodorants to the filtrate to remove odor, and obtain a purified liquid. 6. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 1, characterized in that: in the step S3: 1) Temperature measurement and temperature adjustment of the purification liquid; 2) Add a neutralizer to the purification solution. 7. The energy-saving and water-saving dyeing and finishing process of polyester woven gray fabric according to claim 6, characterized in that: in the step S3: 3.1), measure the temperature of the purification solution after purification, and measure whether the temperature of the purification solution meets the temperature requirements of neutralization treatment. If it does not meet the requirements, adjust the temperature of the purification solution to make the temperature of the purification solution reach the neutralization temperature and the temperature required for processing; 3.2) Add relevant neutralizing agent to the purified liquid after temperature adjustment, so that the purified liquid can be neutralized by the added neutralizing agent to obtain water source. 8. The energy-saving and water-saving dyeing and finishing process for polyester woven gray fabrics according to claim 1, characterized in that: in the step S4: after the mixed solution for dyeing the gray fabrics is discharged from the inside of the equipment, it is treated and neutralized Finally, the water source is obtained, and the obtained water source is stored. When the equipment dyes the gray cloth again, the stored water source is added to the interior of the equipment for mixing.