Printing and dyeing wastewater treatment system

Abstract

The invention relates to the technical field of wastewater treatment, and particularly discloses a printing and dyeing wastewater treatment system which comprises a first industrial camera and a second industrial camera which are arranged in a printing and dyeing wastewater flow channel, a low-chroma color block group is a decoloration reference module, and a tempering module comprises a turbulence generator and an activated carbon adsorption dispenser. The turbulent flow generator forms an obstacle block in the flow channel and forms turbulent flow behind the obstacle block, and the activated carbon adsorption dispenser is used for dispensing activated carbon into a turbulent flow area formed by the turbulent flow generator; and controlling the turbulence generator and the activated carbon adsorption dispenser by using the control parameters corresponding to the color blocks. And dynamic adjustment of the high-chromaticity waste liquid is realized in a fixed runner stroke. The control mode is simplified, and meanwhile, chromaticity pre-reduction operation of high-chromaticity waste liquid is achieved. In subsequent treatment, low-chroma waste liquid distribution is achieved, chroma corresponds to a decolorizing agent feeding module, a decolorizing agent process and an activated carbon process are coupled, and a decolorizing agent deals with variability of the chroma of the waste liquid with relatively fixed parameters.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a printing and dyeing wastewater treatment system. Background Art

[0002] In the field of printing and dyeing, dyeing wastewater has high chroma and strong biological toxicity. The first step is to remove the chroma of the printing and dyeing wastewater. The article "Research on Disperse Dyeing Wastewater Reuse Treatment Technology" describes the dosage mechanism of the decolorizer. "In the coagulation treatment of dyeing wastewater, appropriately increasing the dosage of the decolorizer can significantly increase the decolorization rate of the dye. This is because the decolorizer can provide more adsorption sites and enhance the flocculation and sedimentation effects. However, if the dosage of the decolorizer is too much, it may have the opposite effect and reduce the decolorization rate instead."

[0003] By conducting experiments on wastewater with different chromaticities, we can obtain the optimal chromaticity range, temperature range, pH range and the corresponding decolorizing agent ratio, so as to ensure that the decolorizing agent is always used efficiently. This can not only improve the chromaticity removal efficiency, but also reduce the amount of decolorizing agent used, thereby reducing costs.

[0004] There are still restrictions on the use of existing decolorizers. For example, the cationic dye-specific decolorizer CW-17 developed by Yixing Qingtai Purifying Agent Co., Ltd. is suitable for low-chroma wastewater treatment. Different types of decolorizers have different applicable chromaticities and different operating requirements. The printing and dyeing production line has many steps and processes, and the amount of waste liquid generated in different processes is different. At the same time, there are many problems in the processing process, so there is no way to ensure the chromaticity uniformity of printing and dyeing wastewater. However, due to the excessive use of decolorizers, the effect is counterproductive. At the same time, when the waste liquid is uneven, it is necessary to prepare decolorizers with different chromaticities. Due to the diversity of the chromaticity of the waste liquid, when the uniform chromaticity is temporarily stored in the wastewater area, the continuous multi-chromaticity water supply causes the chromaticity to be variable and increases the retention time. In the process of continuous multi-chromaticity wastewater treatment, the chromaticity of the wastewater is difficult to match the optimal decolorization chromaticity of the decolorizer. The cost of wastewater treatment operation is increased, and the operation is not convenient.

[0005] Activated carbon is suitable for pre-reduction treatment of chromaticity of wastewater with various chromaticities. Activated carbon is not suitable for large-scale treatment because it needs to be analyzed and reused. In the continuous wastewater flow channel, if the activated carbon has a small particle size and a large specific surface area, it provides more adsorption sites, which is convenient for rapid color reduction. The solid impurities in the wastewater are mixed with the activated carbon particles. During the activated carbon filtration and capture process, a large amount of solid impurities will be mixed in, which is not conducive to reuse and analysis. Large-particle activated carbon or specially shaped activated carbon processed by molding is convenient for collection and analysis, but the specific surface area is small. When the flow channel length is constant, there will be problems of non-adsorption saturation. Summary of the invention

[0006] The purpose of the present invention is to provide a printing and dyeing wastewater treatment system, which uses grayscale difference to obtain the closest chromaticity block, uses the chromaticity block to distinguish control parameters, realizes dynamic pre-decolorization of activated carbon, high-chromaticity reflux dilution and re-decolorization, and low-chromaticity diversion decolorizer fixed parameter decolorization, so that the activated carbon pretreatment and the directional treatment of the fixed parameter decolorizer are coupled, so that the unevenness of the decolorizer in dealing with the waste liquid is solved, and the problems raised in the above-mentioned background technology are solved.

[0007] To achieve the above object, the present invention provides the following technical solutions: A printing and dyeing wastewater treatment system comprises an industrial camera 1 and an industrial camera 2 arranged in a printing and dyeing wastewater flow channel, wherein the collection lens ends of the industrial camera 1 and the industrial camera 2 are both provided with a same-color gradient chromaticity multi-color block auxiliary sheet, a groove body is opened in the middle of each color block, wherein a plurality of color blocks are divided into two groups, a low-chromaticity color block group is a bleaching reference module, and a high-chromaticity color block is a tempering reference module; a grayscale difference selection and control module converts an image into a grayscale image according to the image information collected by the industrial camera 1 and the industrial camera 2, and the grayscale difference selection and control module compares the grayscale value of the waste liquid color area with the multi-color block auxiliary sheet. The lowest difference in the grayscale values ​​of the color blocks determines the corresponding color blocks, and each color block corresponds to the tempering intensity or wastewater flow direction of the tempering module; the tempering module includes a turbulence generator and an activated carbon adsorption dispenser, the turbulence generator forms an obstacle block in the flow channel and forms turbulence behind the obstacle block, and the activated carbon adsorption dispenser dispenses activated carbon into the turbulent area formed by the turbulence generator. The tempering intensity parameter corresponding to each high-chroma color block includes the number of obstacles of the turbulence generator and the number of dispensers of the activated carbon adsorption dispenser, and the number of obstacles and the number of dispensers increase synchronously with the increase of chroma.

[0008] As a further solution of the present invention: the industrial camera 2 collects the chromaticity of the waste liquid after conditioning, the grayscale difference selection and control module monitors whether the chromaticity of the waste liquid reaches the low chromaticity color block group area, the grayscale difference selection and control module monitors that the chromaticity of the waste liquid does not meet the standard and controls the reflux of the waste liquid mixed with activated carbon, and the low chromaticity waste liquid is mixed with the original chromaticity waste liquid to reduce the chromaticity, the industrial camera 1 continues to detect, and controls the conditioning module to process the waste liquid through the grayscale difference selection and control module.

[0009] As a further solution of the present invention: an activated carbon supplementing dispenser is arranged between the activated carbon adsorption dispenser and the industrial camera 2, and the activated carbon supplementing dispenser uses the flow rate increase value of the flow channel detected by the flow monitor as a reference, and controls the activated carbon supplementing dispenser to supplement the activated carbon. The waste liquid image information collected by the industrial camera 2 reaches the low-chroma color block group, and the waste liquid flows into the subsequent flow channel.

[0010] As a further solution of the present invention: a liquid storage filter tank and a liquid conveyor are sequentially arranged behind the industrial camera 2, so that the wastewater meeting the low-chroma color block group enters the liquid storage filter tank to remove the activated carbon, and the waste liquid accumulates to generate a liquid level height that meets the working requirements of the liquid conveyor.

[0011] As a further solution of the present invention: the liquid conveyor is based on the image information collected by the second industrial camera, and obtains the color block with the closest accurate grayscale value difference through the grayscale difference selection and control module. The liquid conveyor controls the waste liquid in the liquid storage and filtration tank to enter the decolorization flow channel of the corresponding color block in the multiple decolorization flow channels at a constant flow rate. The decolorizer delivery module performs secondary decolorization on the low-chroma waste liquid. The decolorized waste liquid enters the decolorization waste liquid homogenization tank for homogenization. The homogenized waste liquid meets the quality requirements of biochemical treatment waste liquid.

[0012] As a further solution of the present invention: the grayscale value of the waste liquid image is located at an intermediate value between the grayscales of the two color blocks, and the grayscale difference selection and control module preferentially selects the high chroma color block.

[0013] As a further solution of the present invention: industrial camera three is added to the liquid storage and filtration pool for image acquisition, and industrial camera three is equipped with a multi-color block auxiliary film with the same color gradient chromaticity. The grayscale difference selection and control module is combined with the multi-color block auxiliary film with the same color gradient chromaticity to obtain the closest low-chromaticity color block, and the wastewater is discharged according to the decolorization flow channel corresponding to the low-chromaticity color block.

[0014] As a further solution of the present invention: the obstacle shape of the turbulence generator is selected to be a cylinder, and the water flow contacts the circumferential surface of the cylinder.

[0015] As a further solution of the present invention: the activated carbon released by the activated carbon adsorption dispenser is fixed by threading a rope, wherein at least three activated carbons form a group.

[0016] As a further solution of the present invention: in a group of activated carbon, a floating block is fixed above the top activated carbon by a rope, and a weighted block is fixed below the bottom activated carbon by a rope.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This technical solution uses grayscale difference to obtain the closest color block, and uses the control parameters corresponding to the color block to control the turbulence generator and activated carbon adsorption dispenser. Within the fixed flow path, dynamic adjustment of high-chroma waste liquid is achieved. The control method is simplified, and the chroma pre-reduction operation of high-chroma waste liquid is achieved at the same time. In the subsequent processing, low-chroma waste liquid is diverted, and the chroma corresponds to the decolorizer delivery module, realizing the coupling of the decolorizer process and the activated carbon process. The decolorizer responds to the variability of the waste liquid chroma with relatively fixed parameters.

[0018] On the basis of the above advantages, the waste liquid has too high chromaticity, resulting in the color of the waste liquid after treatment not meeting expectations, and the waste liquid with reduced chromaticity flows back to the front flow channel of industrial camera 1. The waste liquid with reduced chromaticity is mixed with the previous waste liquid to dilute the waste liquid chromaticity, and the activated carbon further flows and fully adsorbs; the waste liquid with too high chromaticity is reduced in chromaticity, and the chromaticity is further reduced by activated carbon adsorption during the flow process; after secondary treatment, the chromaticity reaches the low chromaticity color block area, and the subsequent operation is carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A processing diagram for selecting a control module for grayscale difference in a printing and dyeing wastewater treatment system; Figure 2 It is a schematic diagram of a printing and dyeing wastewater treatment system; Figure 3 A schematic diagram of activated carbon series connection in a printing and dyeing wastewater treatment system; In the figure: 1. Industrial camera one; 11. Industrial camera two; 12. Industrial camera three; 2. Grayscale difference selection and control module; 3. Conditioning module; 31. Turbulence generator; 32. Activated carbon adsorption dispenser; 4. Activated carbon replenishment dispenser; 5. Flow monitor; 6. Liquid storage and filtration tank; 7. Liquid conveyor; 8. Decolorizing agent delivery module; 9. Decolorizing waste liquid homogenization tank. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 3 : In this embodiment: it includes industrial camera 1 and industrial camera 2 11 arranged in the printing and dyeing wastewater flow channel, and the collection lens ends of industrial camera 1 and industrial camera 2 11 are both provided with a same-color gradient chromaticity multi-color block auxiliary sheet, and a groove is opened in the middle of each color block, wherein several color blocks are divided into two groups, the low-chromaticity color block group is a bleaching reference module, and the high-chromaticity color block is a tempering reference module; the grayscale difference selection and control module 2 converts the image into a grayscale image according to the image information collected by the industrial camera 1 and industrial camera 2 11, and the grayscale difference selection and control module 2 determines the corresponding color block according to the minimum difference between the grayscale value of the waste liquid color area and the grayscale value of the multi-color block, and each color block corresponds to the tempering intensity or wastewater flow direction of the tempering module 3.

[0022] In this embodiment: Please refer to Figure 1, the same color gradient chromaticity multi-color block auxiliary sheet selected in this embodiment is a single red. In fact, there are many single colors such as red, green, yellow, and orange in printing and dyeing wastewater, but the color is adjusted according to the production situation, so the color of the discharged wastewater can be known. When in use, replace the same color gradient chromaticity multi-color block auxiliary sheet of the corresponding color. This technical solution uses 6 units of color blocks, including three low-chromaticity color blocks and three high-chromaticity color blocks. A slot body is opened in the middle of each color block. The color of the liquid is located in the slot body after shooting, and the central area of ​​each color block is a liquid color block. When the image is converted to a grayscale image, the closest color block grayscale is obtained according to the grayscale difference between the liquid color block and each color block. Each color block corresponds to the tempering parameters of the tempering module 3, and the tempering parameters of the tempering module 3 include: the number of obstacles raised by the turbulence generator 31 and the number of activated carbon adsorption dispensers 32. The advantage of using partitions is to simplify control, and the chromaticity affects the adjustment of the turbulence generator 31 and the activated carbon adsorption dispenser 32.

[0023] The parameters after chromaticity analysis are too linear, and it is necessary to improve the adjustment accuracy of the turbulence generator 31 and the activated carbon adsorption dispenser 32 to match the linear parameter output of the conditioning module 3. Although this method can improve accuracy, the cost of operation control increases. The purpose of reducing chromaticity is to make the waste liquid meet the needs of subsequent biochemical treatment. The use of color blocks can not only meet the use requirements but also reduce the complexity of the system and make it more stable. Increasing the number of color blocks can also improve accuracy, and the specific situation can be adjusted according to needs.

[0024] In this embodiment: the tempering module 3 includes a turbulence generator 31 and an activated carbon adsorption dispenser 32. The turbulence generator 31 forms an obstacle block in the flow channel and forms turbulence behind the obstacle block. The activated carbon adsorption dispenser 32 dispenses activated carbon into the turbulent area formed by the turbulence generator 31. The tempering intensity parameter corresponding to each high-chroma color block includes the number of obstacles of the turbulence generator 31 and the number of activated carbon adsorption dispensers 32, and the number of obstacles and the number of dispensers increase synchronously with the increase of chroma.

[0025] In this embodiment: the obstacle shape of the turbulence generator 31 is a cylinder, and the water flow contacts the circumferential surface of the cylinder. The printing and dyeing production line will continuously produce wastewater. The entire system is a flow channel structure. The waste liquid flows in the flow channel and goes to different wastewater treatment areas for treatment. Limited by the flow characteristics of the flow channel, a turbulence generator 31 is set. The turbulence generator 31 is an up and down lifting structure. The turbulence generator 31 is normally stored on the bottom surface of the flow channel. When the grayscale difference selection control module 2 controls the turbulence generator 31 to rise, the cylinder is lifted. The fluid passes through the circumferential surface of the cylinder and forms a turbulent zone behind the cylinder, converting the laminar flow into turbulent flow. The turbulence slows down the flow speed and forms a mixed turbulent zone. The activated carbon adsorption dispenser 32 is turned on after the turbulence generator 31 rises, and the activated carbon is put into the turbulent area to prevent the activated carbon adsorption dispenser 32 from accumulating at the bottom. The activated carbon is fixed by threading a rope, and three to four activated carbons are in a group. In a group of activated carbon, the activated carbon on the top has a floating block, and the activated carbon on the bottom has a weighted block, so that each group of activated carbon can be distributed vertically to the waste liquid, so that the upper, middle and lower layers of the waste liquid can all be adsorbed by the activated carbon.

[0026] In this embodiment: the high-chroma color block is a tempering reference module, the waste liquid is located in the tempering reference module, and the parameters of the turbulence generator 31 and the activated carbon adsorption dispenser 32 are adjusted according to the color block area. The principle is that when the depth of the waste liquid increases, while the length of the flow channel remains unchanged, increasing the number of turbulence generators 31 can effectively reduce the flow rate of the liquid. The activated carbon adsorption dispenser 32 puts the activated carbon into the turbulent area to promote the contact and adsorption of the activated carbon and the waste liquid. The darker the chroma, the more turbulent points there are, and the slower the flow rate decreases. At a fixed distance, the reaction time and reaction efficiency of the activated carbon and the waste liquid are increased, and dynamic adsorption adjustment is achieved in a limited flow channel. This method is more in line with the application environment of the factory. After tempering by activated carbon adsorption, the chroma and some impurities are reduced, the toxicity of the waste liquid is reduced, and the chroma of the wastewater meets the treatment of the decolorizer and also meets the subsequent biochemical wastewater water supply treatment standards.

[0027] In this embodiment: industrial camera 11 collects the chromaticity of the waste liquid after conditioning, and the grayscale difference selection and control module 2 monitors whether the chromaticity of the waste liquid reaches the low chromaticity color block group area. After the grayscale difference selection and control module 2 monitors that the chromaticity of the waste liquid does not meet the standard, it controls the reflux of the waste liquid mixed with activated carbon, and the low chromaticity waste liquid is mixed with the original chromaticity waste liquid to reduce the chromaticity. The industrial camera 1 continues to detect, and controls the conditioning module 3 to process the waste liquid through the grayscale difference selection and control module 2.

[0028] In this embodiment: the waste liquid after decolorization passes through industrial camera 11, and industrial camera 11 uses the same processing method as industrial camera 1 to cooperate with grayscale difference selection and control module 2 to detect the waste liquid. After detection by grayscale difference selection and control module 2, it is still within the high chroma color block area, and the liquid mixed with activated carbon is controlled to reflux. The advantage of this process is that when the color of the waste liquid after treatment does not meet expectations, it may be that the chroma is too dark or the activated carbon adsorption is incomplete. The waste liquid with reduced chroma flows back to the front flow channel of the previous industrial camera 1, and the waste liquid with reduced chroma is mixed with the previous waste liquid to dilute the chroma of the previous waste liquid, and the activated carbon flows further to fully adsorb. After the waste liquid with too high chroma has its chroma reduced, the chroma is further reduced by continuous activated carbon adsorption. After the wastewater is refluxed for secondary treatment, the chroma reaches the low chroma color block area, and subsequent operations are performed.

[0029] In this embodiment: an activated carbon supplement dispenser 4 is arranged between the activated carbon adsorption dispenser 32 and the industrial camera 2 11. The activated carbon supplement dispenser 4 uses the flow rate increase value detected by the flow monitor 5 as a reference, and controls the activated carbon supplement dispenser 4 to supplement the activated carbon. The waste liquid image information collected by the industrial camera 2 11 reaches the low-chroma color block group, and the waste liquid flows into the subsequent flow channel.

[0030] In this embodiment: the flow monitor 5 is set in the flow channel, and the monitoring principle of the flow monitor 5 is: the product of the flow velocity and the fluid cross section in the constant cross section flow channel; the cross section of the flow channel is constant, and the liquid level height can be used to calculate the cross-sectional area of ​​the fluid; the liquid level height can be obtained by the liquid level sensor, which is a prior art, and the flow velocity can be detected by a flow meter or a flow velocity sensor. Under normal circumstances, the waste liquid flow in the flow channel is constant. If the amount of waste liquid generated by production is not fixed, the flow rate can be fixed by storage, regulation and transportation; the reflux of high-chroma waste liquid into the front end flow channel of the previous industrial camera 1 will inevitably increase the flow of the flow channel; the flow monitor 5 detects the flow change, and in the subsequent processing process, according to the increase in flow, controls the activated carbon replenishment dispenser 4 to replenish the waste liquid to meet the waste liquid treatment needs.

[0031] In this embodiment, the principle of the activated carbon supplement dispenser 4 is the same as that of the activated carbon adsorption dispenser 32. The refluxed waste liquid is mixed with the original waste liquid, resulting in an increase in flow and a decrease in chromaticity. After the industrial camera 1 cooperates with the grayscale difference selection and control module 2 to obtain the current waste liquid chromaticity, the grayscale difference selection and control module 2 controls the quantity of the activated carbon adsorption dispenser 32.

[0032] Delivery method 1: multiple activated carbon adsorption dispensers 32 are provided, the number of activated carbon supplement dispensers 4 is the same as that of activated carbon adsorption dispensers 32, the activated carbon supplement dispenser 4 is turned on when the flow rate sensor detects that the liquid level is higher than the set threshold, and the delivery speed of the activated carbon supplement dispenser 4 is the same as that of the activated carbon adsorption dispenser 32. The ratio of the flow increment to the original flow is known, and the number of activated carbon supplement dispensers 4 turned on is obtained according to the number of existing activated carbon adsorption dispensers 32*[the ratio of the flow increment to the original flow]

[0033] Delivery method 2: Add a water delivery pump in the return flow channel to quantitatively control the return flow of the return wastewater. The water delivery pump controls the return flow to be the same as the original flow; the actual flow is converted to twice the original flow, and the opening quantity and delivery speed of the activated carbon supplement dispenser 4 and the activated carbon adsorption dispenser 32 are consistent.

[0034] In this embodiment: a liquid storage filter tank 6 and a liquid conveyor 7 are sequentially arranged behind the industrial camera 2 11, so that wastewater that meets the requirements of the low-chroma color block group enters the liquid storage filter tank 6 to remove the activated carbon. After the waste liquid accumulates, a liquid level height that meets the working requirements of the liquid conveyor 7 is generated. The liquid conveyor 7 obtains the color block with the closest accurate grayscale value difference based on the image information collected by the industrial camera 2 11 and the grayscale difference selection control module 2. The liquid conveyor 7 controls the waste liquid in the liquid storage filter tank 6 to enter the decolorization flow channel of the corresponding color block in multiple decolorization flow channels at a constant flow rate. The decolorizer delivery module 8 performs secondary decolorization on the low-chroma waste liquid. The decolorized waste liquid enters the decolorization waste liquid homogenization tank 9 for homogenization. The homogenized waste liquid meets the quality requirements of the biochemical treatment waste liquid.

[0035] In this embodiment: the waste liquid that reaches the low-chroma color block area enters the interior of the liquid storage filter tank 6, and after the waste liquid is filtered and processed in the interior of the liquid storage filter tank 6, the activated carbon is recovered and analyzed for reuse; the liquid level generated in the liquid storage filter tank 6 is higher than the lowest liquid level value of the liquid conveyor 7, and the control module 2 is selected according to the image information collected by the subsequent industrial camera 1 in combination with the grayscale difference to obtain the corresponding low-chroma color block, and the corresponding decolorization treatment flow channel is selected through the liquid conveyor 7 according to the chroma of the waste liquid, and the decolorizer delivery module 8 is processed; the parameters of the decolorizer delivery modules 8 in multiple decolorization flow channels are fixed but different from each other, and the liquid conveyor 7 performs a secondary analysis of the liquid according to the image, and selects the decolorizer delivery module 8 of the corresponding chroma for processing, and the decolorizer in the decolorizer delivery module 8 corresponds to the chroma of the wastewater. During the control process of the liquid conveyor 7, when the grayscale value of the waste liquid is located at the middle value of the grayscale values ​​of the two low-chroma color blocks, the high grayscale value color block is selected. If there is a problem of abnormal decolorization due to increased decolorizing agent dosage, complete decolorization can be achieved by increasing the number of low-chroma color blocks and reducing the amount of decolorizing agent added.

[0036] In this embodiment: during the control process of the liquid conveyor 7, when the grayscale value of the waste liquid in the image captured by the industrial camera 11 is located at the middle value of the grayscale values ​​of the two low-chromaticity color blocks, the low-grayscale value color block is selected. There is still a distance between the industrial camera 11 and the liquid storage filter tank 6, and the activated carbon flows into the liquid storage filter tank 6 with the waste liquid; the image captured by the industrial camera 11 is processed by the grayscale difference selection control module 2 and the color information is still reacted with the activated carbon before reaching the liquid storage filter tank 6; when the activated carbon is unsaturated, the color inside the liquid storage filter tank 6 will be lower than the detection color of the industrial camera 1, and the final color is closer to the low-grayscale value color block.

[0037] In this embodiment: when the grayscale value of the waste liquid image collected by the industrial camera 1 is at the middle value between the grayscales of two color blocks, the grayscale difference selection and control module 2 gives priority to selecting the high-chroma color block; activated carbon is used for wastewater color adjustment pretreatment, and the high-chroma color block will further reduce the chroma; the subsequent sequence will perform a secondary color selection, and the high degree of chroma reduction will not affect the decolorizer's treatment of the wastewater.

[0038] In this embodiment: an industrial camera 3 12 is added to the liquid storage and filtration pool 6 for image acquisition. The industrial camera 3 12 is equipped with a multi-color block auxiliary film with the same color gradient chromaticity. The grayscale difference selection and control module 2 is combined with the multi-color block auxiliary film with the same color gradient chromaticity to obtain the closest low-chromaticity color block, and the wastewater is discharged according to the decolorization flow channel corresponding to the low-chromaticity color block.

[0039] In this embodiment: an industrial camera 3 12 is added to the liquid storage and filtration tank 6 for detection to improve the accuracy of decolorization and diversion. The color block of the decolorization reference module corresponds to the decolorizer delivery module 8. The above illustrates the unevenness of the waste liquid chromaticity and the optimal treatment chromaticity range of the decolorizer. The industrial camera 3 12 compares the chromaticity again, and the wastewater selects the flow channel according to the chromaticity. The chromaticity of the wastewater treated by the decolorizer delivery module 8 matches its own optimal treatment chromaticity.

[0040] In this embodiment: large-particle activated carbon or molded activated carbon is connected in series in the form of ropes, the top activated carbon is fixed to a floating block by ropes, and the bottom activated carbon is fixed to a weighted block by ropes, and the linear activated carbon can achieve multi-water layer distribution in the water flow.

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A printing and dyeing wastewater treatment system, comprising an industrial camera 1 (1) and an industrial camera 2 (11) arranged in a printing and dyeing wastewater flow channel, characterized in that: The collection lens ends of the industrial camera 1 (1) and the industrial camera 2 (11) are both provided with a same-color gradient chromaticity multi-color block auxiliary sheet, each color block has a groove in the middle, wherein a plurality of color blocks are divided into two groups, the low-chromaticity color block group is a bleaching reference module, and the high-chromaticity color block group is a tempering reference module; The grayscale difference selection and control module (2) converts the image into a grayscale image based on the image information collected by the industrial camera 1 (1) and the industrial camera 2 (11). The grayscale difference selection and control module (2) determines the corresponding color block according to the minimum difference between the grayscale value of the waste liquid color area and the grayscale value of the multiple color blocks. Each color block corresponds to the tempering intensity or wastewater flow direction of the tempering module (3). The conditioning module (3) comprises a turbulence generator (31) and an activated carbon adsorption dispenser (32), wherein the turbulence generator (31) forms an obstacle block in the flow channel and forms turbulence behind the obstacle block, and the activated carbon adsorption dispenser (32) dispenses activated carbon into the turbulence zone formed by the turbulence generator (31). The conditioning intensity parameter corresponding to each high-chroma color block includes the number of obstacles of the turbulence generator (31) and the number of dispensed activated carbon by the activated carbon adsorption dispenser (32), and the number of obstacles and the number of dispensed activated carbon increase synchronously with the increase of chroma.

2. A printing and dyeing wastewater treatment system according to claim 1, characterized in that: The industrial camera 2 (11) collects the chromaticity of the waste liquid after conditioning, and the grayscale difference selection and control module (2) monitors whether the chromaticity of the waste liquid reaches the low-chromaticity color block group area. The grayscale difference selection and control module (2) controls the waste liquid to be mixed with activated carbon and reflux after the chromaticity of the waste liquid does not meet the standard, and the low-chromaticity waste liquid is mixed with the original chromaticity waste liquid to reduce the chromaticity. The industrial camera 1 (1) continues to detect and controls the conditioning module (3) to process the waste liquid through the grayscale difference selection and control module (2).

3. A printing and dyeing wastewater treatment system according to claim 2, characterized in that: An activated carbon replenishing dispenser (4) is provided between the activated carbon adsorption dispenser (32) and the second industrial camera (11). The activated carbon replenishing dispenser (4) uses the flow rate increase value detected by the flow monitor (5) as a reference, and controls the activated carbon replenishing dispenser (4) to replenish the activated carbon. The waste liquid image information collected by the second industrial camera (11) reaches the low-chroma color block group, and the waste liquid flows into the subsequent flow channel.

4. A printing and dyeing wastewater treatment system according to claim 1, characterized in that: A liquid storage filter tank (6) and a liquid conveyor (7) are sequentially arranged behind the second industrial camera (11), so that wastewater meeting the requirements of the low-chroma color block group enters the liquid storage filter tank (6) to remove the activated carbon, and waste liquid accumulates to generate a liquid level height that meets the requirements of the operation of the liquid conveyor (7).

5. A printing and dyeing wastewater treatment system according to claim 4, characterized in that: The liquid conveyor (7) is based on the image information collected by the second industrial camera (11) and obtains the color block with the closest gray value difference through the gray value difference selection control module (2). The liquid conveyor (7) controls the waste liquid in the liquid storage and filtration tank (6) to enter the decolorization flow channel of the corresponding color block in the multiple decolorization flow channels at a constant flow rate. The decolorizing agent delivery module (8) performs secondary decolorization on the low-color waste liquid. The decolorized waste liquid enters the decolorization waste liquid homogenization tank (9) for homogenization. The homogenized waste liquid meets the quality requirements of the biochemical treatment waste liquid.

6. A printing and dyeing wastewater treatment system according to claim 1, characterized in that: The grayscale value of the waste liquid image is located at an intermediate value between the grayscale values ​​of the two color blocks, and the grayscale difference selection and control module (2) preferentially selects the high chromaticity color block.

7. A printing and dyeing wastewater treatment system according to claim 5, characterized in that: An industrial camera 3 (12) is added to the liquid storage and filtration tank (6) for image acquisition. The industrial camera 3 (12) is equipped with a multi-color block auxiliary film with the same color gradient chromaticity. The grayscale difference selection and control module (2) combines the multi-color block auxiliary film with the same color gradient chromaticity to obtain the closest low-chromaticity block, and the wastewater is discharged according to the decolorization flow channel corresponding to the low-chromaticity block.

8. A printing and dyeing wastewater treatment system according to claim 1, characterized in that: The obstacle shape of the turbulence generator (31) is a cylinder, and the water flow contacts the circumferential surface of the cylinder.

9. A printing and dyeing wastewater treatment system according to claim 1, characterized in that: The activated carbon dispensed by the activated carbon adsorption dispenser (32) is fixed by threading a rope, wherein at least three activated carbons form a group.

10. A printing and dyeing wastewater treatment system according to claim 9, characterized in that: In a group of activated carbon, a floating block is fixed above the top activated carbon by a rope, and a weighted block is fixed below the bottom activated carbon by a rope.

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