JP2002129398A - Recycling system of waste water from surface treatment process such as plating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a system for surely supplying a necessary quantity of water having predetermined pH which is variously adjusted by using clarified water as a base, and for surely rinsing plated products effectively, by improving an already proposed method of reusing waste water generated in a surface treatment process as various rinsing water in each tank, after obtaining a clarified water by process such as solid-liquid separation and pH adjustment, as a recycling and/or a cost reducing technology. SOLUTION: A recycling system of the waste water for supplying suitably pH adjusted water for each tank, using the clarified water as a base, which is separated in sedimentation equipment from waste water generated in the surface treatment process, comprises supplying pH adjusted water in about 8.5-10.5 for rinsing after alkaline degreasing, and pH adjusted water in about 4-7 for rinsing after acid treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reuse management system for surface treatment wastewater such as general plating / surface treatment, powder coating / surface treatment, and plating surface treatment.

[0002]

2. Description of the Related Art Conventionally, as one of means for achieving reuse and / or reduction of treatment cost of surface treatment wastewater (hereinafter referred to as wastewater), solid-liquid separation treatment of the wastewater and PH adjustment have been used. In addition, a method has been proposed in which clean water is produced by substantially equalizing clean water, and this clear water is reused as washing water (wash water) for various tanks. As a part of this, the present applicant has also proposed a method of using water in the plating treatment of Japanese Patent No. 3096292. Other documents related to the above method include JP-A-48-2
No. 9267 chemical copper plating waste liquid treatment method, or JP-A-50-1294
No. 90, a method for treating chromic acid-containing wastewater, and JP-A-10-277565, a method for treating wastewater.

[0003]

The above documents are considered to be effective in reusing wastewater and / or reducing treatment costs.
A system for further improving the treatment cost reduction, or the pH of the clarified water is adjusted to various types, and the predetermined amount of the clarified water (PH adjusted water) of the pH adjustment is supplied to each tank in a reliable and necessary amount. Improvements such as the fact that the system has not been established, or that it is not necessarily sufficient to ensure reliable and efficient cleaning of the plated product treated with each layer, are considered.

[0004]

Means for Solving the Problems The invention of claim 1 is to establish a technology for using uniform-quality PH-adjusted water as washing water for each tank, and to provide a pH-adjusted clarified water (PH) having a predetermined value. The purpose of the present invention is to establish a system for supplying the required amount of conditioned water to each tank reliably and reliably, or to surely and efficiently wash the plated product treated in each layer.

[0005] Claim 1 is to use the wastewater generated by the surface treatment,
Separation treatment by a sedimentation device, the pH of the generated clarified water is adjusted, a wastewater reuse management system that converts the PH adjusted water to a numerical value corresponding to each tank and supplies the wastewater, wherein the PH adjusted water is
Recycling management of wastewater for surface treatment such as plating, which is supplied at about PH 8.5 to 10.5 for washing after alkali degreasing tank and about 4 to 7 for washing after acid treatment tank System.

[0006] The invention of claim 2 is to establish a technology for using the pH adjusted water of uniform quality as the washing water for each tank,
It is intended to establish a system for supplying the required amount of conditioned water to each tank with certainty, or to surely and efficiently wash plated products treated in each layer.

[0007] Claim 2 is to use the wastewater generated by the surface treatment,
Separation treatment is performed by a sedimentation device, and the generated clarified water is adjusted to a PH. This PH adjusted water is generated.
This is a wastewater reuse management system that raises the temperature to about ℃ and converts this PH-adjusted temperature-raised water into a value corresponding to each tank and supplies it.
The pH-adjusted water, PH 8.5 ~ 1 for washing after the alkaline degreasing tank
Supplied at about 0.5, and PH4 ~ for water washing after acid treatment tank
This is a reuse management system for wastewater for surface treatment such as plating, which is supplied at about 7.

[0008] The invention of claim 3 is to establish a technology to use the pH adjusted water of uniform quality as the washing water for each tank,
It is intended to establish a system for supplying the required amount of conditioned water to each tank with certainty, or to surely and efficiently wash plated products treated in each layer.

[0009] Claim 3 is to use the wastewater generated by the surface treatment,
Separation treatment is performed by a sedimentation device, and the generated clarified water is adjusted for PH, this PH adjusted water is generated, and the PH adjusted water is activated by a catalyst means. A wastewater reuse management system that converts and supplies the PH-adjusted activated water to PH8.5 for washing after an alkaline degreasing tank.
~ 10.5 and PH for washing after acid treatment tank
This is a recycling management system for wastewater for surface treatment such as plating, which is supplied at about 4 to 7. The invention of claim 4 is
Establishment of a process to use uniform quality PH adjustment water as washing water for each tank, establishment of a process to supply the required amount of PH adjustment water to each tank reliably, or plating products treated in each layer It is intended to ensure reliable cleaning and efficient cleaning.

[0010] Claim 4 is to use the wastewater generated by the surface treatment,
Separation process by a sedimentation device to produce clarified water, and PH adjustment of the clarified water to generate PH adjusted water of each numerical value, and storing the PH adjusted water of each numerical value in an individual water tank And, when using the PH adjusted water of each numerical value of each water tank for washing after surface treatment, individually controlling the PH adjusted water of each numerical value corresponding to each washing, and controlling the control by computer management. And a step of transmitting the data of the computer to the host computer via a communication means. This is a reuse management system for surface treatment wastewater such as plating. The invention of claim 5 establishes a step of using uniform-quality PH adjusted water as washing water in each tank, and establishes a step of supplying PH adjusted water to each tank reliably and in a required amount. Alternatively, it is intended to ensure reliable cleaning of the plated product treated with each layer and efficient cleaning.

[0011] Claim 5 relates to wastewater generated in the surface treatment,
Separation treatment by a sedimentation device to produce clarified water, and the pH of the clarified water is adjusted to generate PH adjusted water of each numerical value, and the PH adjusted water of each numerical value is approximately 17 ° C. to 26 ° C. The process of raising the temperature to pH and raising the temperature of the pH-adjusted heated water, the process of storing the temperature-adjusted PH-adjusted water in individual water tanks, and the use of the pH-adjusted water of each numerical value in each water tank for washing after surface treatment In doing so, a step of individually controlling the PH adjustment water of each numerical value corresponding to each washing, a step of managing the control by a computer, and a step of transmitting data of the computer to a host computer via a communication means, This is a reuse management system for wastewater for surface treatment such as plating, which is composed of: The invention of claim 6 provides a uniform quality PH adjustment water,
Establishment of a process to use as washing water for each tank, and establishment of a process to supply the required amount of PH adjusted water to each tank reliably and
Alternatively, it is intended to ensure reliable cleaning of the plated product treated with each layer and efficient cleaning.

[0012] Claim 6 is to treat the wastewater generated by the surface treatment,
Separating by a sedimentation device to produce clarified water, and adjusting the pH of the clarified water to generate each value of PH adjusted water, and activating the pH adjusted water of each value by catalytic means. A step of generating PH-adjusted active water, a step of storing the PH-adjusted active water in individual water tanks, and a step of using the PH-adjusted water of each numerical value of each water tank for washing after surface treatment. A step of individually controlling the PH adjustment water of each numerical value in accordance with each washing, and a step of managing the control by a computer, and transmitting data of the computer to the host computer via communication means. It is a reuse management system for wastewater for surface treatment such as plating.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Wastewater from a plating treatment is treated in, for example, a storage tank, a separation tank, a PH adjustment tank (reaction tank), a flocculation tank, and other tanks (one example). Through a solid-liquid separation process. The treated water clarified by this settling device is then treated with one or several treatment tanks and / or PH
The pH is adjusted by being guided to an adjustment tank or the like, so that clear water whose pH has been adjusted can be obtained. In addition, in the configuration in which the activation treatment device provided with this catalyst means is attached, the clarified water whose pH has been adjusted is subjected to the activation treatment, so that there is no stagnation, odor, etc., and excellent clarified water with the adjusted PH can be obtained. .

Following the treatment tank, a PH adjustment tank is provided. In the PH adjustment tank, for example, PH 8.5 to 10.5 adjusted water, PH 4 to 7 adjusted water, and PH 6 to 8 adjusted water, respectively. Is converted. The converted PH adjustment water of each numerical value is filled in each corresponding treatment tank. The pH 8.5 to 10.5 adjusted water is used for washing a plated product treated with a plating bath such as an alkaline degreasing tank. The PH4-7 adjusted water is used for washing the plated product treated in the acid treatment tank. The conditioned water of pH 6 to 8 is used for washing the plating product treated in the electrolytic cleaning tank. That is, the structure is such that washing is performed with PH adjustment water corresponding to the treatment of the plated product in each stage, and the chemicals are sequentially washed away without imposing a burden on the plated product. Although not shown, pH adjusting water corresponding to each plating bath such as a bluish sorter bath, a cyan bath, a sink bath, and an acidic ammonium chloride bath is used. After being converted into the PH 8.5-10.5 adjusted water, the PH 4-7 adjusted water, and the PH 6-8 adjusted water, respectively, they may be subjected to activation treatment in an activation treatment device. PH8.5-10.5 adjusted active water, or PH4-7 adjusted active water, PH6-8 adjusted active water thus generated,
Each is converted and used as a treatment water for a plating bath such as an alkali degreasing tank, an acid treatment, and an electrolytic cleaning tank according to the plating bath.

Thus, the wastewater used for the plating process is
For example, PH 8.5-10.5 adjusted water, or PH 4-7 adjusted water, PH
The use of clean water and the like can be suppressed as much as possible by converting it to 6-8 adjusted water and using it. It also has features that help prevent pollution.

The PH4 to 7 adjusted water is heated to, for example, PH8.5 to 10.5 adjusted heated water, PH4 to 7 adjusted heated water, or PH6 to 8 adjusted heated water, and at approximately 17 ° C. throughout the year. By controlling the temperature to about 26 ° C, for example, improving the cleaning effect, PH8.
It is thought that it will be useful for expanding the use time of 5-10.5 adjusted warming water, PH4-7 adjusted warming water, etc., and improving the quality of plated products. Note that the ideal temperature is 15 ° C to 20 ° C. In particular, the temperature of the washing water after the degreasing treatment is used at about 20 ° C to 25 ° C.

Further, by performing the treatment of the salt concentration of the pH adjustment water,
It is thought to be useful for improving the cleaning effect, increasing the number of times and time of using PH8.5-10.5 adjusted heated water, PH4-7 adjusted heated water, etc., and improving the quality of plated products. The ideal value is 1
Maintain within the range of 000 to 15,000 μs (μs: microsiemens value).

According to the present invention, as shown in the figure, a method and a process for treating wastewater for plating, or a plating method, a plating type,
The type and process of the plating bath, the plating method and process based on the product are merely examples, and the description, drawings, and usage modes of each example are not limited to the same, and similarly to the conventional wastewater for various surface treatments. What is available and its effect are equally conceivable.

PH adjustment, PH adjustment water / PH adjustment activated water / PH
A computer manages the generation of the adjusted temperature-raised water and the control of supply / discharge, stop, and amount of the PH-adjusted water / PH-adjusted activated water, etc., and transmits the data of the computer to the host computer via communication means. Used for management, guidance / driving / alarm management, money management, etc.

[0020]

An embodiment of the present invention will be described below.

The wastewater A of the plating treatment is transferred from the storage tank 1 to the separation tank 2,
After the treatment in each of the tanks (one example) such as the PH adjustment tank 3 and the coagulation tank 4, the solid-liquid separation treatment is performed via the precipitation device 5. The treated water B clarified by the settling device 5 is guided to one or several treatment tanks 6a, 6b, 6c to 6n as shown in the schematic diagram of FIG. It is converted into 10.5 adjusted water 6a-1, PH4-7 adjusted water 6b-1, and PH6-8 adjusted water 6c-1, respectively. And this PH8.5 ~ 10.5 adjusted water 6a-1
Is used for washing the plated product treated in the alkaline degreasing tank 7 with water. The PH4 to PH7 adjusted water 6b-1 is used for washing the plated product treated in the acid treatment tank 9. Adjustment water 6c-1 for PH6 ~ 8
Is used for washing the plated product treated with a plating bath such as the electrolytic cleaning tank 11 with water. In addition, PH8.5 ~ 10.5 adjusted water 6a-1, or PH4 ~
(7) Adjusted water 6b-1 and PH6-8 adjusted water 6c-1 are sent through a cooler 20 to a catalyst means 21 such as a ceramic wheel 200 or a carbon rod, and the catalyst means 21 is used for activation. By performing a treatment for eliminating further stagnation and offensive odor, for example, PH8.5 to 10.5 adjusted active water, PH4 to 7 adjusted active water, or PH6 to 8 adjusted active water is generated (described later). .5 to 10.5 Use adjusted active water as washing water.

In the figure, when there are washings 8, 8a, 8b, 8c to 8n, the PH 8.5 to 10.5 adjusted water 6a-1 (PH 9 to 10 adjusted water is ideal) is changed from the washing 8c to the washing 8 It is a configuration that returns. Washing
8c may use tap water C. Although not shown,
The use of this PH 6-8 adjusted water 6c-1 is for water washing 10, 10a, 10b, 10
There is an example in which c to 10n are cyclically transferred, and an example in which the transfer is performed sequentially (other washing is also possible). And said middle water washing 8, 8a, 8
b, the supply amount and stoppage of PH 8.5 to 10.5 adjusted water 6a-1 to 8c to 8n are controlled by computer management and control means (not shown) such as a solenoid valve (other examples are also provided). the same).

In the figure, when there is a washing 10 in the figure, the PH4-7 adjusted water 6b-1 (PH5-6 adjusted water is ideal) is used for washing. Water may be used for washing 10. still,
Although not shown, the use of the PH 6-8 conditioning water 6b-1 includes an example in which the washings 10a to 10n are circulated, and an example in which the washings are sequentially shifted (other washing is also possible).

In the figure, when there is a washing 12-12n, the PH 6-8 adjusted water 6c-1 (PH 7-9 adjusted water is ideal) is used for washing. Wash this PH 6 ~ 8 adjusted water 6c-1 with water 12
This is a configuration to return to the water washing 12a from.

The pH 8.5 to 10.5 adjusted water 6a-1 or PH4
77 conditioned water 6b-1 and PH6-8 conditioned water 6c-1 are temperature-treated and heated to approximately 17 ° C to 26 ° C, and PH8.5 to 10.5 adjusted heated water 6a-10 or PH4 The temperature-controlling water 6b-10 for adjusting the temperature to 7 and the temperature-controlling water 6c-10 for adjusting the pH 6 to 8 follow the above-described example in principle. still,
Washing water after the treatment of the zinc plating 13 while maintaining the salt concentration of the PH 8.5-10.5 adjusted warmed water 6a-10 or the PH 4-7 adjusted warmed water 6b-10 within the range of 10,000-15,000 μs. Use for
For example, if there are washings 14, 14a, 14b to 14n, this P
After the H8.5 to 10.5 adjusted heated water 6a-10 and the like are introduced into the rinsing water 14, the water is returned and guided to the rinsing water 14n. Also wash water 14 to clean water C
Sometimes used. Other features that are not described follow the above-described examples.

Further, PH8.
5 to 10.5 adjusted active water 6a-100, PH4 to 7 adjusted active water 6b-100, or PH6 to 8 adjusted active water 6c-100, in principle, according to the above example. The catalyst means 21 can also be used for the treatment of the PH 8.5-10.5 adjusted warmed water 6a-10, PH4-7 adjusted warmed water 6b-10, or PH6-8 adjusted warmed water 6c-10. Although not shown, the catalyst means 21 may be provided in the processing tanks 6a to 6n and the like, and may be provided before the PH adjustment.

PH 8.5-1 to the above-mentioned water washing 8, 8a, 8b, 8c-8n
0.5 adjusted water 6a-1, water washing 10, 10a, 10b, 10c ~ 8n to PH 8 ~ 7
Conditioning water 6b-1, and PH to washing 12, 12a, 12b, 12c-12n
The supply amount and supply / discharge of the 6-8 conditioned water 6c-1, etc. are controlled by computer management and control means such as a solenoid valve. The data of this computer is transmitted to the host computer via communication means, and is used for process management, guidance / operation / alarm management, money management, and the like.
Similarly, PH 8.5-10.5 adjusted active water 6a-100, PH 4-7 adjusted active water
The supply amount and supply / discharge of 6b-100, or PH8.5 to 10.5 adjusted heating water 6a-10, PH4 to 7 adjusted heating water 6b-10, etc., are controlled by computer management and control means such as solenoid valves, etc. Follow the previous example. Therefore, as mentioned above, plating process management, guidance, operation and alarm management of plating, water, factory, etc., reduction of management mistakes, cost reduction,
Or it can be used for tap water use, reduction of pollution, quality and money management, etc.

[0028]

According to the first aspect of the present invention, wastewater generated by surface treatment is separated by a sedimentation device, and the generated clarified water is adjusted for PH, and the PH adjusted water is converted into a numerical value corresponding to each tank. Wastewater reuse management system that supplies PH-adjusted water,
This is a reuse management system for surface treatment wastewater, such as plating, which is supplied at about PH 8.5 to 10.5 for washing after an alkali degreasing tank and supplied at about PH 4 to 7 for washing after an acid treatment tank. Therefore, the establishment of technology to use uniform-quality PH adjusted water as the washing water for each tank, and the establishment of a system that reliably and reliably supplies the required amount of PH adjusted water with a predetermined value to each tank, or There are features such as reliable and efficient cleaning of the plated product treated in each layer.

According to a second aspect of the present invention, the waste water generated by the surface treatment is separated by a settling device, and the generated clear water is separated.
PH adjustment to produce PH adjustment water, this PH adjustment water at about 17 ℃
It is a wastewater reuse management system that raises the temperature to about 26 ° C, converts the pH-adjusted temperature-raised water into numerical values corresponding to each tank, and supplies it.
PH adjusted water, PH 8.5 to 10.5 for washing after alkaline degreasing tank
It is a reuse management system for surface treatment wastewater, such as plating, which is supplied at about PH4 and supplied at about PH4-7 for washing after the acid treatment tank. Therefore, the establishment of technology to use uniform-quality PH adjusted water as washing water for each tank, and the establishment of a system to supply the required amount of PH adjusted water to each tank reliably and at each layer, or Features include reliable and efficient cleaning of plated products.

According to a third aspect of the present invention, waste water generated by the surface treatment is separated by a sedimentation device, and the generated clear water is separated.
This is a wastewater reuse management system that adjusts PH, generates PH-adjusted water, activates the PH-adjusted water with catalytic means, converts the PH-adjusted active water into numerical values corresponding to each tank, and supplies it. Re-use of pH-adjusted activated water at pH 8.5-10.5 for washing after alkaline degreasing tank and PH4-7 for washing after acid treatment tank It is a management system. Therefore, the establishment of technology to use uniform-quality PH adjusted water as washing water for each tank, and the establishment of a system to supply the required amount of PH adjusted water to each tank reliably and at each layer, or Features include reliable and efficient cleaning of plated products.

The invention according to claim 4 is a step of separating waste water generated by the surface treatment by a settling device to produce clarified water, and adjusting the pH of the clarified water to produce PH adjusted water of each numerical value. In the process of storing the pH-adjusted water of each numerical value in an individual water tank and using the PH-adjusted water of each numerical value of each water tank for washing after surface treatment, the PH-adjusted water of each numerical value is washed with each water. The process of individually controlling the computer in accordance with the requirements and the process of transmitting the computer data to the host computer via a communication means by controlling the computer with the control, and the reuse management of the wastewater for surface treatment such as plating. System. Therefore, establish a process to use uniform quality PH adjusted water as washing water for each tank, and
Establish a process to supply the required amount of conditioned water to each tank reliably, and ensure that plating products treated in each layer can be reliably and efficiently cleaned.Plating process management, plating / water /
It can be used for guidance / operation / warning management of factories, etc., or for use of water supply, reduction of pollution, quality / money management, etc.

The invention of claim 5 is a step of separating waste water generated by the surface treatment by a sedimentation device to produce clarified water, and adjusting the pH of the clarified water to produce PH adjusted water of each numerical value. A step of raising the PH adjusted water of each numerical value to about 17 ° C. to 26 ° C. to generate the PH adjusted heated water,
In the process of storing in individual water tanks and using the pH adjusted water of each numerical value in each water tank for washing after surface treatment,
A step of individually controlling the conditioned water for each washing, and a step of computer-controlling the control and transmitting the computer data to the host computer via communication means, for plating and other surface treatments. It is a wastewater reuse management system. Therefore, establish a process to use uniform quality PH adjustment water as washing water in each tank, establish a process to supply the required amount of PH adjustment water to each tank with certainty, and perform plating in each layer. Features include reliable washing of products and efficient washing, and use for plating process management, guidance, operation, and alarm management for plating, water, and factories.

[0033] The invention of claim 6 is a step of separating wastewater generated in the surface treatment by a sedimentation device to produce clarified water, and adjusting the pH of the clarified water to produce PH adjusted water of each numerical value. Activate the pH-adjusted water of each numerical value by catalytic means,
A step of generating adjusted active water, a step of storing PH adjusted active water in individual water tanks,
When using for water washing after surface treatment, the process of individually controlling the PH adjustment water of each numerical value corresponding to each washing, and computer control of the control, and transmitting the data of the computer to the host computer via communication means And a reuse management system for surface treatment wastewater such as plating. Therefore, establish a process to use uniform quality PH adjustment water as washing water in each tank, establish a process to supply the required amount of PH adjustment water to each tank with certainty, and perform plating in each layer. Features include reliable washing of products and efficient washing, and use for plating process management, guidance, operation, and alarm management for plating, water, and factories. Furthermore, the amount of water and chemicals used through the data management, the processing time, the number of reuses, and the like are compared with the amounts of water and chemicals used in the conventional method, the processing time, and the like. In addition, it is possible to present a comparison of money, assets, costs, and the like to a customer, and there is a real profit that efficient management and expansion of a sales channel can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating an example of a process of filtering wastewater.

FIG. 2 is a schematic diagram of a main part showing an example of a plating step.

FIG. 3 is a schematic view illustrating an example of a plating step.

FIG. 4 is a schematic view showing another example of the plating step.

[Explanation of symbols]

 1 Storage tank 2 Separation tank 3 PH adjustment tank 4 Coagulation tank 5 Precipitation device 6a-6n Treatment tank 6a-1 PH8.5-10.5 conditioned water 6b-1 PH4-7 conditioned water 6c-1 PH6-8 conditioned water 6a-10 PH8.5 ~ 10.5 Adjusted heating water 6b-10 PH4 ~ 7 Adjusted heating water 6c-10 PH6 ~ 8 Adjusted heating water 6a-100 PH8.5 ~ 10.5 adjusted activated water 6b-100 PH4 ~ 7 Adjusted activated water 6c-100 PH6 -8 Adjusted activated water 7 Alkaline degreasing tank 8-8n water washing 9 Acid treatment tank 10-10n water washing 11 Electrolytic washing tank 12-12n water washing 13 Galvanized 14-14n water washing 20 Cooler 21 Catalyst means 200 Ceramic hole A Wastewater B Treated water C tap water

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/66 530 C02F 1/66 530L C23G 3/00 C23G 3/00 C25D 21/18 C25D 21/18 E (72) Inventor Masatake Kano 1-206-2, Minato-ku, Nagoya-shi, Japan Suirei Co., Ltd. (72) Inventor Katsuyuki Sakaki 4-15 Shobocho, Minato-ku, Nagoya-shi KS Rika Co., Ltd. (72) Invention Person Satoshi Kaneko 2-25-16 Minamigaoka, Tsu-shi, Mie F-term (reference) 4D015 BA19 BB02 CA20 EA32 FA28 4D062 BA19 BB02 CA20 EA32 FA28 4K053 TA09 TA12 YA01 YA06

Claims (6)

[Claims] 1. A wastewater generated in a surface treatment is separated by a sedimentation device, and a clarified water generated is adjusted in pH.
A wastewater reuse management system that converts adjusted clarified water (PH adjusted water) to a value corresponding to each tank and supplies the adjusted pH, wherein the PH adjusted water is used for washing after an alkaline degreasing tank with a pH of 8.5 to 8.5. 1
Supplied at about 0.5, and PH4 ~ for water washing after acid treatment tank
A recycling management system for wastewater for surface treatment, such as plating, which is supplied at about 7. 2. The wastewater generated by the surface treatment is separated by a settling device, and the generated clear water is adjusted to a pH.
Generates clear water for adjustment (PH adjustment water) and abbreviates this PH adjustment water.
It is a wastewater reuse management system which raises the temperature to about 17 ° C. to 26 ° C., converts the PH-adjusted temperature-raised water into a value corresponding to each tank, and supplies the wastewater. PH8.5-1 for washing
Supplied at about 0.5, and PH4 ~ for water washing after acid treatment tank
A recycling management system for wastewater for surface treatment, such as plating, which is supplied at about 7. 3. The wastewater generated in the surface treatment is separated by a sedimentation device, and the generated clear water is adjusted in pH.
Refined clear water (PH adjustment water) is generated, this PH adjustment water is activated by catalytic means, and this PH adjustment activated water is converted into numerical values corresponding to each tank and supplied to a wastewater reuse management system. The PH-adjusted activated water, PH8.
Supplied at about 5 to 10.5, and P for water washing after acid treatment tank
A recycling management system for wastewater for surface treatment such as plating, which is supplied at about H4 ~ 7. 4. A step of separating wastewater generated by the surface treatment by a sedimentation device to produce clarified water, and adjusting the pH of the clarified water to obtain a clarified water (PH-adjusted water) of each value. And the step of storing the pH-adjusted water of each numerical value in an individual water tank, and the step of using the PH-adjusted water of each numerical value of each water tank for washing after surface treatment. A step of individually controlling water in response to each washing; and a step of computer-controlling the control and a step of transmitting data of the computer to a host computer via communication means. Wastewater reuse management system. 5. A process for separating waste water generated in the surface treatment by a sedimentation device to produce clarified water, adjusting the pH of the clarified water, and adjusting the clarified water (PH adjusted water) for each numerical value. Generate PH adjusted water of each numerical value, approximately 17 ℃ ~ 26
The process of raising the temperature to about ℃ and generating the pH-adjusted temperature-raised water; the process of storing the PH-adjusted temperature-raised water in individual water tanks; A step of individually controlling the PH-adjusted water of each numerical value corresponding to each washing, and a step of managing the control by a computer, and transmitting data of the computer to a host computer via a communication means. And a reuse management system for wastewater for surface treatment such as plating. 6. A step of separating wastewater generated in the surface treatment by a sedimentation device to generate clarified water, and adjusting the pH of the clarified water to adjust clarified water (PH adjusted water) for each numerical value. A step of activating the pH-adjusted water of each numerical value by a catalyst means to generate PH-adjusted active water; and a step of storing the PH-adjusted active water in individual water tanks. When the pH adjusted water of each numerical value of the above is used for washing after surface treatment, a step of individually controlling the PH adjusted water of each numerical value corresponding to each washing, and computer controlling the control, and controlling the computer. Transmitting the data to the host computer via a communication means; and a wastewater treatment system for surface treatment such as plating.