KR20050013394A - Dyed Good Washing Method and Dyeing System - Google Patents

Abstract

PURPOSE: A high efficiency washing method and a dyeing system of dyed material are characterized by verifying analysis of reused waste water and a condition of the washed material with a water quality sensor, verifying water temperature of a dyeing bath, discharged waste water temperature and temperature supplied washing water with a temperature sensor, being kept pace with a cooling process and a washing process all or partly, reducing work time, controlling generation of cooling waste water, increasing productivity, saving fuel and water and reducing badness of finished products. CONSTITUTION: A dyeing system of material contains a dyeing bath(100) and a heat exchanger(200). The dyeing system heats raw water having low temperature and uses the raw water as washing water for preventing the material from wrinkling. The dyeing system comprises: a high temperature water storing tank(400) and a middle temperature water storing tank(300) recovering heat from discharged dye waste water or the washing water, heating the raw water, classifying and keeping the heated raw water in accordance with temperature; a water quality sensor detecting water quality of wash waste water of the material; and a reused water keeping tank(500) dividing reused water and discharged waste water and keeping the reused water. A washing method of the material is as follows: dividing the raw water heated on the heat exchanger into water having temperature being higher and water having temperature being lower than standard temperature, followed by keeping the waters; detecting water qualities of dye waste water or the wash waste water, followed by estimating reuse or disuse; using the high temperature water on the early of washing as the wash water; and then mixing the middle temperature water and the low temperature water to lower the temperature of the wash water gradually, followed by using the low temperature wash water on the late step.

Description

Dyeed Good Washing Method and Dyeing System

The present invention relates to a dye washing method and a dyeing system for washing dye in the dyeing after dyeing in the dyeing system performing a dyeing process.

In the dyeing process, dye is added to the dye bath to dye the dye. The dye is heated to 130 ℃ ~ 60 ℃ according to the type of dye (chemical fiber, rayon, cotton, etc.). The heated chlorine is washed with water after the dyeing of the chlorine is finished. Water used for washing is industrial water at room temperature or low temperature ground water. The temperature of the chlorine immediately after dyeing in the dyeing tank is different from the temperature of the industrial or ground water at high temperature, so when the industrial water or ground water is supplied to the dyeing bath to wash the hot chlorine, the hot chlorine has a physical property. A change (a phenomenon of phenomena in which the crease of the contaminants is fixed by contact between the flushing water of low temperature and the high temperature contaminants) occurs.

In order to solve this problem, in the case of the conventional dyeing machine (high pressure dyeing machine), a heat exchanger is installed outside the dyeing tank, and the high-temperature dyeing wastewater from the dyeing tank is cooled by heat exchange with low-temperature industrial water or groundwater, and then transferred back to the dyeing tank. By cooling the contaminants in the dyeing tank to a certain temperature (about 55 ° C in winter and about 65 ° C in summer), the contaminants are washed with low-temperature industrial or ground water to prevent changes in the physical properties of the contaminants.

However, in order to cool the chlorine in the dyeing tank, industrial or ground water, which is heated by heat exchange with hot dyeing water in a heat exchanger, is transferred to industrial or ground water tanks supplied at low temperatures in winter, but used as cooling water in summer. When the supply temperature of the groundwater or industrial water is high, the high temperature cooling water is transferred to the groundwater or industrial water tank and diluted with the groundwater or industrial water, and the temperature of the tank water is raised to a certain level (about 35 ℃ or more). In cooling the high-temperature dyeing water supplied to the cooling heat exchanger, the cooling efficiency of the high-temperature dyeing water to be cooled decreases, thereby increasing the cooling time and the amount of cooling water used, and thus increasing the amount of high-temperature cooling water transferred to the water tank. The water temperature used as cooling water rises more and the cooling time increases further. To generate a positive cycle.

Therefore, in the summer season, high temperature coolant generated in the heat exchanger is not reused except for a few, and is discharged to the sewage system, resulting in waste of fuel and water waste due to the waste of a large amount of hot water. In addition, productivity was reduced due to delayed cooling time of the salt.

The problem in the conventional dyeing process was that the dyeing process was caused to cool the dyeing bath to a predetermined temperature in order to prevent the stain of the blood, and after the dyeing tank is cooled to supply the washing water to the dyeing bath to wash.

In order to solve the conventional problems, the present invention has been devised, and an object of the present invention is to efficiently wash while preventing the occurrence of stains and phenomena of the chlorine during washing in the dyeing process of the high temperature chlorine in the dye bath It is an object of the present invention to provide a washing method for automatically controlling the temperature of the washing water from high temperature to low temperature to wash the chlorine step by step and to provide a dyeing system that achieves the washing method.

1 is a schematic configuration diagram of a dyeing system according to the present invention

*** Explanation of major symbols in drawings ***

100: dyeing tank 200: heat exchanger 300: medium temperature water storage tank

400: high temperature water storage tank 500: recycled water storage tank

AV-1 ~ AV15: Automatic Control Valve

S-1: Wastewater Turbidity Sensor S-2: Wastewater Conductivity Sensor

S-3: Wastewater temperature sensor S-4: Heat exchanger discharge water temperature sensor

S-5: Water Temperature Sensor in Dyeing Tank

P-1, P-2, P-3: Pump 600: Automatic Control Panel

In order to achieve the object of the present invention, the dye solution washing method of the dyeing system according to the present invention, unlike the conventional washing method of washing with a wash water of the raw water after cooling the dye bath to a predetermined temperature wash water to wash the stains It is characterized in that to prepare a temperature from a high temperature to a low temperature sequentially to wash the chlorine step by step, the dyeing system according to the present invention for achieving such a cleaning method circulates the high temperature dye wastewater generated in the dye bath In order to use it as washing water to wash the high temperature chlorine, it is equipped with a recycling water storage tank, and equipped with a heat exchanger to heat the raw water for washing using the high temperature of the dye wastewater, and classify the heated water into hot water and medium temperature water. And two hot water storage tanks for storing each, and a plurality for controlling the temperature of the washing water. The automatic control valve and the temperature sensor is characterized in that it is provided.

1 is a schematic diagram showing the construction of a dyeing system according to the present invention.

Dyeing system according to the present invention, as shown in Figure 1, the dye bath 100 and the heat exchanger 200, the medium temperature water storage tank 300, the hot water storage tank 400, the recycle water storage tank 500 A plurality of automatic control valves (AV-1 to AV15), wastewater turbidity detection sensors (S-1) and wastewater conductivity detection sensors (S-) formed at the inlet and outlet of the wastewater and the water (or raw water) of the respective devices are connected to each other by pipes. 2), waste water temperature sensor (S-3), heat exchanger discharge water temperature sensor (S-4), water temperature sensor inside the dyeing tank (S-5), a plurality of pumps (P-1, P-2, P-3) and an automatic control panel 600 for controlling the automatic control valve, the sensor pump, and the like, which are piped to each other.

(In this specification, clean raw water that has never been used, such as running water or groundwater, is called raw water, and recycled dyed waste water is called recycled water, and raw water and recycled water are water. use.)

The dyeing tank 100 is simply expressed in the present invention, but is provided with a variety of devices as a dyeing machine is a dyeing device for the water inlet (101) is a device for dyeing the blood dye (101) the waste water finished the dyeing work of the blood stain Dye wastewater discharge port 102 is discharged is formed, the internal water temperature sensor (S-5) is formed to measure the internal water temperature of the dye bath 100 is provided to the automatic control panel 600 do.

Raw water pipe connected from groundwater storage tank (not shown) or water supply is branched and connected to the dyeing machine inlet 101 of the dyeing tank 100 and the heat exchanger raw water inlet 210 of the heat exchanger 200, respectively. The raw water is supplied, the raw water pipe connected to the dyeing machine inlet 101 is installed with a ninth automatic control valve (AV-9) and the dyeing feed water pump (P-1), the heat exchanger raw water inlet 210 The 11th automatic control valve AV-11 and the heat exchanger feed water pump P-3 are installed in the raw water pipe.

The first automatic control valve (AV-1), wastewater turbidity detection sensor (S-1) and wastewater conductivity detection sensor (S-2), and dyeing wastewater are connected to the pipe connected to the dyeing wastewater discharge port 102 of the dyeing tank 100. The discharge pump (P-2) is installed sequentially, this pipe is branched, one of which is connected to the recycling storage tank 500, the third automatic control valve (AV-3) is installed and the other pipe The waste water temperature sensor (S-3) is installed, the pipe is branched again and connected to the heat exchanger waste inlet 201 of the heat exchanger 200 together with the second automatic control valve (AV-2), It is piped to drain immediately with automatic control valve (AV-12).

The heat exchanger 200 is a device for heating the raw water in the fresh water in the low temperature state by inputting the high temperature dye wastewater discharged from the dyeing tank 100, the heat exchanger waste inlet through which the dyeing waste water flows A heat exchanger wastewater discharge port 202 for discharging the temperature-reduced wastewater to the outside and a heat exchanger source inlet 210 through which raw water in a low temperature state flows into the heat exchanger 200. And the hot water storage tank 400 and the hot water storage tank 300 in which the raw water of the high temperature or the medium temperature of which the temperature is raised by heat exchange operation is stored, respectively, in parallel piping lines. Connected heat exchanger air outlet 220 is formed.

The heat exchanger source inlet 210 is a pipe provided with an eleventh automatic control valve AV-11 and a heat exchanger water supply pump P-3 as described above, and introduces raw water of low temperature (room temperature) into the heat exchanger. It is configured to be heated from the dye waste water of the high temperature state introduced into the heat exchanger 200 from the heat exchanger waste inlet 201 to be discharged to the external drain through the heat exchanger waste outlet 202.

The heat exchanger raw water outlet 220 measures the temperature of the heated raw water discharged by installing the heat exchanger raw water temperature sensor (S-4) and separated and stored as the hot water storage tank 400 and the medium temperature water storage tank 300. Tubes are formed to be formed, and automatic control valves (AV-4, AV-5) in each pipe connecting between the hot water storage tank 400 and the medium temperature water storage tank 300 and the heat exchanger source outlet 220. ) Is provided.

By the way, the heat exchanger source outlet 220 is branched from the pipe connecting the two hot water storage tanks (300, 400) and the tenth automatic control valve (10) in the tube formed in the dyeing waste outlet (102) of the dyeing tank (100) AV-10) is installed is connected to the pipe is formed on the upper side of the first automatic control valve (AV-1) is configured so that the high temperature raw water discharged from the heat exchanger source outlet 220 is supplied directly into the dye bath (100) This is also, the pipe is branched so that one pipe is connected to the dye bath inlet 101, the other pipe is configured to connect the pipe to the dye waste outlet (102).

Thus, the high temperature raw water discharged from the heat exchanger source outlet 220 through the dye waste outlet 102 is configured to be supplied into the dyeing tank 100, which is backwashed for washing the finished dyeing work in the dyeing tank 100. This is to configure to be possible.

The heat exchanger waste inlet 201 into which the high temperature dye waste water flows in is introduced into the high temperature dye waste water which cannot be recycled in the dye waste water discharged from the dye waste export port 102 of the dye bath 100 as described above. As described above, the temperature is measured by the wastewater temperature sensor S-3, and only the dyeing waste water having a predetermined temperature or more is introduced into the heat exchanger 200, and the dyeing wastewater having no economical efficiency is the second automatic control valve AV-2. The vent is closed and the 12th automatic control valve (AV-12) is opened and discharged to the outside.

The recycled water storage tank 500 is reused by the wastewater turbidity detection sensor S-1 and the wastewater conductivity conductivity sensor S-2, which can be reused in the dyeing wastewater discharged from the dyeing tank 100 as described above. This is to store the dyeing waste water judged to be possible, the pipeline of the outlet of the recycled water is introduced into the heat exchanger 200, the raw water of low temperature with the sixth automatic control valve (AV-6) as shown in FIG. It is connected between the eleventh automatic valve (AV-11) and the heat exchanger raw water supply pump (P-3) of the pipe.

That is, the raw water or recycled water is transferred to the heat exchanger 200 by automatic control as needed.

In addition, a ninth automatic control valve (AV-9) is installed in the raw water pipe for introducing the raw water to the dyeing tank 100 from the ground water storage tank or the tap water, and the raw water pipe includes the hot water storage tank 400 and the medium temperature water storage. It is connected to the water outlet of the tank 300, and each connection pipe is provided with the seventh automatic control valve (AV-7) and the eighth automatic control valve (AV-8), so that the raw water of low temperature and high temperature or medium temperature raw water alone or It is controlled to an appropriate temperature by the mixing method to make a piping configuration that can be supplied into the dyeing tank 100 as the dyeing water.

The raw water pipe is a wastewater discharge pipe connected to the raw water pipe connected to the dye bath inlet 101 of the dyeing tank 100 and the dyeing tank waste outlet 102 of the dyeing tank 100, respectively, to wash the wastewater. The discharge pipe OF1 and the washing water supply pipe OF2 are piped together.

The thirteenth automatic control valve AV-13 is installed in the washing wastewater discharge pipe OF1, and the fifteenth automatic control valve AV-15 is installed in the washing water supply pipe OF2.

The washing wastewater discharge pipe (OF-1) is an overflow pipe of the washing wastewater when washing the dye solution of the dyeing tank 100, the washing water supply pipe (OF-2) is the hot water that is the initial washing water introduced into the dyeing tank (100) The washing wastewater discharge pipe (OF-1) and the washing water supply pipe (OF-2) are connected to each other by connecting the pipe connecting the dyeing tank inlet 101 and the pipe connecting the dyeing waste outlet 102 to each other. Therefore, the washing water supply pipe (OF-2) that is the introduction pipe of the initial washing water is connected to the pipe connected to the fresh water discharge automatic valve (AV-10) of the heat exchanger 200 and extends to the dye waste discharge port (102).

The washing water supply pipe (OF-2) is a seventh automatic control valve (AV-7) installed under the high temperature water storage tank 400 when the initial high temperature water of the dye bath 100 is introduced into the dyeing water outlet (102). And the 15th automatic control valve AV-15 attached to the washing water supply pipe OF-2 is opened and the 10th automatic control valve AV-10 closes the pipeline, The raw water is to be supplied into the dye bath 100 as the initial water for washing.

In the observation connecting the dye bath inlet 101, one end of the washing waste water discharge pipe (OF-1) and the washing water supply pipe (OF-2) is connected to the front of the dye bath water supply pump (P-1), but the dye waste outlet ( In the observation connecting 102, the dyeing pipe outlet 102 is connected to the heat exchanger waste inlet 201 of the heat exchanger 200 by forming a branch to connect the pipe through the heat exchanger source outlet 220 It is connected to the pipe to allow the raw water at high temperature to flow in.

The washing waste water discharge pipe (OF-1) is the excess water when the supply of the dyeing water to the dyeing tank 100, the excess water overflows the dyeing tank 100 to the tube connected to the dyeing water outlet (102) side To the outside.

Pipes at the dyeing tank inlet 101 side connected to one end of the two overflow tubes (OF-1, OF-2) and the washing high temperature water supply pipe (OF-2) connected to the pipe at the dyeing tank inlet 101 side The 14th automatic control valve (AV-14) is installed and connected to the dyeing tank inlet 101, the 14th automatic control valve (AV-14) and the dyeing tank inlet 101 in the conduit of the washing waste water discharge pipe ( Connected to one end of OF-1).

The other end of the washing high-temperature water supply pipe (OF-2) is connected to a pipe line through which the dye wastewater discharged from the dye waste discharge port 102 is discharged, and the first automatic control valve of the pipe line formed at the dye waste discharge port 102 ( The other end of the washing wastewater discharge pipe OF-1 is connected between AV-1) and the wastewater turbidity sensor S-1.

The washing waste water discharge pipe (OF-1) is a pipe for discharging the washing waste water, which is supplied to the dyeing tank 100 from the dye waste discharge port 102 to which the water for washing is supplied, to wash the chlorine through the dye for water inlet 101. .

The washing water supply pipe (OF-2) supplies the hot water stored in the hot water storage tank 400 into the dyeing tank 100 through the dye waste discharge port 102 so that the temperature difference between the hot chlorine and the water during initial washing within a certain period. It is a pipe for supplying high temperature wash water to maintain the cooling of the chlorine and to wash the chlorine without changing the physical properties of the chlorine.

Dyeing system according to the present invention having the configuration as described above is to reduce the time delay due to water washing after cooling the contaminants without changing the properties of the high temperature contaminants and high temperature contaminants (about 80 ℃) for reducing the waste water and fuel 7) automatic control valve (AV-7) of the high temperature water storage tank 400 to recover the high temperature waste water heat by dyeing the initial flushing water at the time of washing with water and storing the high temperature water (about 70 ° C. or more) stored in the high temperature water storage tank 400. ) And the 14th automatic control valve (AV-14) in the closed state of the water supply pipe (OF-2) The 15th automatic control valve (AV-15) is opened and the water supply pump (P-1) is operated so that the high-temperature storage water is a washing water inlet for dyeing waste discharge (102).ToIt is introduced into the dye bath 100 to minimize the temperature difference between the hot chlorine and the initial flushing water to prevent changes in the physical properties of the chlorine,

At this time, the thirteenth automatic control valve (AV-13), which is an automatic control valve for flushing wastewater, is also opened at the same time, and is equal to the flow rate of the hot water transferred through the seventh automatic control valve (AV-7), which is an automatic valve for high temperature water storage tank. A large amount of flushing wastewater (contaminated stained water and hot water diluted in the dye tank) is discharged through the 13th automatic control valve (AV-13). Since the temperature is high, recycling is not possible due to the detection of the water quality sensor wastewater turbidity sensor (S-1) and the wastewater conductivity sensor (S-2), and is transferred to the pipe where the temperature sensor (S-3) is installed. When it is determined that the high temperature wastewater is economical by the detection of (S-3), the automatic valve AV-2 is opened to be transferred to the heat exchanger 200. At this time, the eleventh automatic control valve which is a heat exchanger raw water supply valve ( AV-11) is opened and the heat exchanger water supply pump (P-3) is running The raw water of the hot water heated to high temperature by heat exchange the raw water of the hot water and the waste water transferred to the heat exchanger 200 to the opening of the fifth automatic control valve (AV-5) installed at the inlet of the high temperature water storage tank 400. By the high temperature water storage tank 400,

As described above, the hot water (washing) water (about 70 ° C or more), which is slightly lower than the high temperature water (about 80 ° C), inside the dye bath, is injected into the dye bath in a predetermined time. The washing and lowering of the water temperature inside the dyeing tank are done at the same time. If the water temperature inside the dyeing tank is lowered to a temperature close to the high temperature washing water (about 70 ℃) by the internal temperature sensor (S-5), the high temperature water is stored. Of the seventh automatic control valve (AV-7), which is the automatic inlet valve of the tank 400, and the washing hot water supply pipe (OF-2) The automatic valve (AV-15) is closed, the water supply pump (P-1) is stopped, and the supply of the high temperature raw water dyeing tank 100 is stopped, and the eleventh automatic control valve (AV-11), which is a heat exchanger source water supply valve, is operated. Is closed and the recycle water storage tank 500 opens the sixth automatic control valve AV-6, which is a recycled water discharge valve, and the recycled water transferred by the heat exchanger feed water pump P-3 is transferred to the heat exchanger 200. By closing the fifth automatic control valve (AV-5) and the tenth automatic control valve (AV-10) which were opened after being exchanged with the flushed waste water (approximately 70 ° C), the recycled water replaced the hot water and replaced it with flush water. Into the dye bath 200, the cooling and washing are carried out simultaneously.

At this time, the temperature of the washing water temperature that changes the physical properties of the chlorine by contacting the high temperature chlorine in the dyeing tank varies depending on the type of the chlorine, so the cooling time that is the most economical (reduction of water & shortening working time) In order to ensure cooling time can be reduced only when the flushing water is supplied to the lowest temperature at which the chlorine physical properties do not occur in accordance with the internal water temperature of the dyeing tank 100, the internal water temperature sensor installed in the dyeing tank 100 ( S-5) and the twelfth automatic control valve (AV-12), which is a low temperature wastewater discharge automatic valve, is installed in accordance with the detection of the temperature sensor (S-4) installed in the heat exchanger 200 and detecting the heat exchanger discharge water temperature. The waste water flow rate passing through the twelfth automatic control valve AV-12 step by step according to a program inputted to the automatic control panel 600, and then into the pipe into which the hot dye wastewater of the heat exchanger 200 flows. Installed The high temperature used as the flush water by reducing the amount of heat exchanged by reducing the amount of waste water transferred to the heat exchanger 200 by passing through the second automatic control valve AV-2 to the heat exchanger 200. The temperature of the water is lowered step by step by the program input to the automatic control panel,

When the internal water temperature of the dyeing tank 100 is determined to be a temperature at which the change of the physical properties of the dye is not generated (about 55 ° C. or less) by a temperature sensor S-5 measuring the internal water temperature of the dyeing tank 100, Raw water (industrial water, groundwater, etc.) can be directly used as washing water. In this case, the sixth automatic control valve AV-6, which is an automatic valve for supplying recycled water, and the heated high temperature raw water are discharged from the raw water outlet 220 of the heat exchanger 200. The 10th automatic control valve (AV-10), which is an automatic control valve for high temperature raw water supply of heat exchanger, is closed, and the washing water of the ninth automatic control valve (AV-9), which is a raw water supply control valve, and the washing water supply pipe (OF-2) The 15th automatic control valve AV-15, which is a supply control valve, is opened, and the water supply pump P-1 is operated to wash the water inlet 102 of the dyeing tank 100 to inject the washing water into the dyeing tank 100. The raw water (fresh water) that is supplied at the lowest temperature through) is injected without washing with waste water and the chlorine is low in temperature and the quality of water is high. Water washing and cooling is performed using phosphorus water to ensure the washing quality and to prevent the change of physical properties during exposure to the polluted air.In this case, open the 13th automatic control valve (AV-13), which is a flushing wastewater discharge valve, to clean the wastewater discharge pipe ( Most of the wastewater (washing wastewater) discharged through OF-1) is discharged to water that can be recycled (less than 200 NTU turbidity), and the water quality can be recycled as determined by the water quality sensors S-1 and S-2. When it is determined, the third automatic control valve AV-3, which is an automatic wastewater discharge valve, is opened and transferred to the recycling water storage tank 500, and is connected to the water quality sensors S-1 and S-2 installed in the flush wastewater discharge pipe. The temperature of the chlorine washing is automatically checked by checking the water quality of the wastewater and the physical property does not change due to the atmospheric temperature when the chlorine is taken out of the dyeing tank by the water temperature sensor (S-5) inside the dyeing tank. Is cooled down to When the same condition as the flushing end program input to the automatic control panel 600, the ninth automatic control valve (AV-9), the fifteenth automatic control valve (AV-15) and the washing wastewater discharge pipe (OF-) Washing wastewater installed in 1) (Dye internal wastewater and wastewater diluted with flushing water-Over drain) The thirteenth automatic control valve (AV-13), which is a discharge automatic valve, is closed and the water inside the dyeing tank installed in the lower part of the dyeing tank (100). The first automatic control valve AV-1, which is a discharge valve, is opened to discharge all of the water in the dyeing tank (Direct Drain), thereby terminating the cooling of the chlorine and washing the water.

As such, the high productivity energy-saving dyeing system has a conventional washing and washing process that dualizes the cooling and washing of water, and the washing time is excessive by executing the washing process such as the experience of the workforce, the cooling of the contaminants and the checking of the washing state. Water quality sensor (S-1, S-2) was used to prevent the waste of water and fuel caused by excessive use of coolant and waste of fuel. ) Check the recycle wastewater analysis and the cleaning condition of the chlorides by checking the wastewater, and check the water temperature inside the dyeing tank, the wastewater temperature, and the water supply temperature by the temperature sensors (S-3, S-4, S-5). By operating the heat exchanger 200 for utilizing the wastewater heat of medium temperature and hot water by the program inputted to the automatic control panel according to the type of the chlorine, the automatic valve and the water supply and drainage pumps (P-1, P-2, P-3) are operated.The chlorine cooling process can be performed in parallel with all or part of the water washing process to minimize the reduction of working time and the generation of cooling waste water, and the recycling waste water can be automatically separated and recycled into the water for washing, and the water washing process by checking the water quality of washing water and checking the water temperature inside the dye tank. The automatic shutdown results in increased productivity, fuel savings, water savings, and product defects.

Claims (2)

A dyeing system and a heat exchanger are provided in order to prevent the occurrence of stains and phenomena when washing the stains. Separate and store high temperature water higher than temperature and medium temperature water lower than the reference temperature, detect the water quality of the dyeing waste water of the dyeing tank or the washing waste water to determine whether it is reused as the washing water and high temperature at the initial stage of washing Washing the dyes in the dye bath to wash the stains by minimizing the temperature difference between the wash water and the wash water by gradually lowering the temperature of the wash water by using only water as the wash water and gradually mixing the hot and cold raw water toward the later stage of the washing. Way Dyeing tank and heat exchanger is provided in the dyeing system that uses the raw water of low temperature to wash water (washing water) to prevent the generation of stains when washing the stains, from the discharged dyeing waste water or washing waste water High temperature water storage tanks and medium temperature water storage tanks for recovering heat and storing raw water by temperature, and means for detecting the water quality of dyeing waste water or chlorine washing waste water, and recycling water that can be used as washing water. Dyeing system equipped with a recycling water storage tank for storing recycled water for washing or other dyeing water to be discharged by sewage discharged to sewage.