Textile printing and dyeing wastewater treatment and recycling system

Abstract

The present application relates to printing and dyeing wastewater purification technical field, especially to a kind of textile printing and dyeing wastewater treatment and recycling system, it includes microbial treatment pool, the top of microbial treatment pool is fixedly installed with support, support is made of solid metal material, with good support stability, can stably carry the component in upper portion, provide reliable support base for the upper structure of entire equipment.The top of support is fixedly installed with driving device, driving device can provide stable power output, drive stirring shaft operation, to realize the stirring mixing of substance in microbial treatment pool, promote the sufficient contact reaction of microorganism and wastewater.The present application can be accurately controlled by setting up microorganism release mechanism and each component inside it, the release amount and release timing of microorganism from culture bin or other storage sites to microbial treatment pool.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing and dyeing wastewater purification, and particularly relates to a textile printing and dyeing wastewater treatment and recycling system. BACKGROUND

[0002] The textile printing and dyeing industry is one of the main sources of water consumption and wastewater discharge. A large amount of wastewater containing organic pollutants generated in the production process has caused serious burden to the environment. Traditional printing and dyeing wastewater treatment methods often rely on the use of chemical agents, which not only has high cost, but also has the risk of secondary pollution. In recent years, with the enhancement of environmental awareness and the progress of technology, biological treatment method has gradually become the mainstream trend in the field of printing and dyeing wastewater treatment. This method uses specific microorganisms to degrade organic matter in wastewater, which has the advantages of good treatment effect, low operation cost and no secondary pollution.

[0003] However, the traditional biological treatment system faces some challenges in practical application, such as difficulty in precise control of microorganism dosage, unstable treatment efficiency and low water resource recycling rate. These problems limit the further promotion and application of biological treatment technology in the field of printing and dyeing wastewater treatment. Therefore, it is particularly urgent to develop a technical solution that can efficiently, stably and economically treat printing and dyeing wastewater and realize water resource recycling. SUMMARY

[0004] In order to solve the problems mentioned in the background, the present application provides a textile printing and dyeing wastewater treatment and recycling system.

[0005] The textile printing and dyeing wastewater treatment and recycling system provided by the present application adopts the following technical solution:

[0006] A textile printing and dyeing wastewater treatment and recycling system, comprising a microbial treatment tank, a support is fixedly installed on the top of the microbial treatment tank, a driving device is fixedly installed on the top of the support, a stirring shaft is fixedly installed at the bottom of the driving device, the blades of the stirring shaft are reasonably designed, can generate effective stirring flow field when rotating, make wastewater and microorganisms uniformly mixed, improve treatment efficiency. A microbial culture bin is fixedly installed on one side of the microbial treatment tank, a microbial release mechanism is further arranged on one side of the support, the microbial release mechanism comprises a shell and a reserved hole, the shell is fixedly installed on one side of the microbial treatment tank, the reserved hole is formed in the bottom of the shell and penetrates the shell and the microbial treatment tank.

[0007] The microorganism releasing mechanism comprises a first opening and closing mechanism, a second opening and closing mechanism and a third opening and closing mechanism, and each of the first opening and closing mechanism, the second opening and closing mechanism and the third opening and closing mechanism comprises a first positioning disc, a movable disc, a second positioning disc, a liquid inlet hole, a positioning block, an arc-shaped limiting rod, an arc-shaped spring, a movable block, a sleeve hole and a roller, the first positioning disc, the movable disc and the second positioning disc are arranged in the interior of the shell, a liquid inlet hole is formed in one side of each of the first positioning disc, the movable disc and the second positioning disc, the movable block is fixedly connected to one side of the movable disc, the roller is movably mounted on one side of the movable block, the sleeve hole is formed in one side of the movable block, the arc-shaped limiting rod is movably sleeved in the interior of the sleeve hole, the arc-shaped spring is sleeved on the exterior of the arc-shaped limiting rod, and the positioning block is fixedly connected to one side of the arc-shaped limiting rod.

[0008] Optionally, the microorganism releasing mechanism further comprises a sterile bin, a sterile pipeline, a culture solution bin, a mixing pipeline, a sliding rail, a sliding block, a positioning seat, a servo motor, a screw rod, an internally threaded block and an arc-shaped groove, the sterile bin is fixedly installed in the interior of the shell, the bottom of the sterile bin is communicated with the sterile pipeline, the bottom of the sterile pipeline is communicated with the culture solution bin, one side of the culture solution bin is communicated with the mixing pipeline, the interior structure of the mixing pipeline is smooth, the liquid flow resistance is reduced, the culture solution and the microorganisms can be fully mixed, the sliding rail is arranged on one side of the mixing pipeline, the sliding block is movably installed on the top of the sliding rail through dovetail grooves, the positioning seat is fixedly connected to one side of the sliding rail, the servo motor is fixedly installed on the top of the positioning seat, the output end of the servo motor is fixedly installed with the screw rod, the internally threaded block is movably installed on one side of the screw rod through a threaded groove, and the arc-shaped groove is formed in one side of the mixing pipeline.

[0009] Optionally, the movable disc is movably installed in the middle of the first positioning disc and the second positioning disc, X-shaped sealing rings are arranged at the connecting positions of the movable disc and the first positioning disc and the second positioning disc, the X-shaped sealing rings can effectively prevent liquid leakage and ensure the sealing between the components, the movable block is movably installed in the interior of the arc-shaped groove, and the first positioning disc, the movable disc and the second positioning disc are movably installed in the interior of the mixing pipeline, and limiting rings are arranged on one side of the first positioning disc and the second positioning disc and fixedly installed in the interior of the mixing pipeline.

[0010] Optionally, the mixing pipeline is fixedly installed at the bottom of the shell and communicated with the microorganism treatment pool through a reserved hole, the mixing pipeline is divided into four closed cavities by the first opening and closing mechanism, the second opening and closing mechanism and the third opening and closing mechanism, the partition design can realize independent control of different areas and facilitate adjustment of the release amount and the mixing ratio of the microorganisms and the culture solution according to actual needs.

[0011] Optionally, the cross section of the movable block is F-shaped, which can better cooperate with other components during movement, such as contact and linkage with the arc-shaped groove, the roller is fixed at the opening in the side of the movable block, one side of the arc-shaped limiting rod is fixedly connected with the movable block, the other side of the arc-shaped limiting rod is fixedly connected with the positioning block, and the positioning block is fixedly installed at the top of the mixing pipeline.

[0012] Optionally, the side of the sliding block is fixedly connected with a plurality of trapezoidal protrusions, the cross section of the plurality of trapezoidal protrusions is an arc-shaped plate, and the radius of the plurality of arc-shaped plates is the same as that of the arc-shaped limiting rod, which can make the sliding block effectively contact the roller through the trapezoidal protrusions and push the movable block to move when the sliding block moves, and the plurality of arc-shaped plates on one side of the sliding block are movably connected to one side of the roller, which can reduce the wear of components while ensuring the pushing effect.

[0013] Optionally, the maximum distance of movement of the inner threaded block is equal to the length of the plurality of arc-shaped plates on one side of the sliding block, which can ensure that the displacement of the inner threaded block driven by the lead screw can accurately control the movement range of the sliding block, so as to accurately control the related operation of the microorganism release mechanism, and the sliding rail is fixedly installed in the inside of the shell, which is firm in installation and provides a stable basic structure for the movement of the sliding block and other components.

[0014] Optionally, the release precision of the microorganism release mechanism is configured.

[0015] First, according to the demand of wastewater treatment and the time-dependent activity function f(t), the required amount of microorganisms W(t) at any given time (t) is calculated, and the corresponding target flow Q target (t) is determined; the relationship between flow and displacement is used to solve the displacement Δx target (t) required to reach the target flow Q target (t), the displacement Δx target (t) is converted into the rotation angle θ of the servo motor to obtain the final rotation angle formula, the actual flow Q actual is monitored in real time, and the current displacement information Δx actual is obtained through the encoder to ensure that the actual output of the servo motor is consistent with the theoretical value, and adjustment is made.

[0016] Optionally, according to the demand of wastewater treatment and the time-dependent activity function f(t), the required amount of microorganisms at any given time (t) is calculated, and specifically, the microorganism release amount calculation formula is:

[0017]

[0018] The mathematical model expression of f(t) is:

[0019]

[0020] where W(t) is the required amount of microorganisms at time t, C is the concentration of organic pollutants, V is the volume of wastewater, M is the amount of organic matter that can be degraded per unit mass of microorganisms per unit time, t is the treatment time, f(t) is a time-dependent activity function that describes the activity level of the microorganism population over time, K is the maximum carrying capacity, i.e., the maximum activity or quantity of the microorganism population, r is the growth rate, and t0 is the midpoint on the time axis, i.e., when t=t0, f(t)=K / 2.

[0021] Alternatively, the final rotation angle formula is:

[0022]

[0023] where θ is the rotation angle of the servo motor, Q target (t) is the target flow rate, i.e., the flow rate required for the mixture of microorganisms and culture solution at time (t), B is the baseline flow rate, which is an empirical constant, A is the flow rate sensitivity coefficient, which is an empirical constant, and D is the lead screw pitch.

[0024] The present application has the following beneficial technical effects:

[0025] The present application can accurately control the release amount and timing of microorganisms from the culture bin or other storage parts to the microorganism treatment tank by setting the microorganism release mechanism and its internal components, such as the first opening and closing mechanism, the second opening and closing mechanism, the third opening and closing mechanism, etc. Through the synergistic action of the first positioning disc, the movable disc, the second positioning disc, and the auxiliary adjustment of the arc-shaped limiting rod and the arc-shaped spring, the precise release of microorganisms can be achieved according to the real-time needs of the wastewater treatment process, avoiding the negative impact of waste and excessive release of microorganisms on the treatment effect, improving the utilization efficiency of microorganism resources, and helping to maintain the ecological balance of the microorganism community in the microorganism treatment tank.

[0026] The present application dynamically adjusts the release amount according to the activity level of the microbial population over time by introducing a time-dependent activity function f(t). This ensures that appropriate amounts of microorganisms are provided during different treatment stages (such as the adaptation period, exponential growth period, and stationary phase), avoiding excessive or insufficient release and improving resource utilization. By precisely controlling the release time and quantity of microorganisms, it helps maintain the activity and quantity balance of the microbial community in the microbial treatment tank, preventing ecological imbalance caused by excessive or insufficient release. Through precise flow control and timely release of microorganisms, unnecessary waste of microorganisms is reduced, and operating costs are lowered. The treated water can be further recycled and reused, for example, in the rinsing stage of the dyeing process, reducing the dependence on fresh water resources and reducing environmental pollution. The present application not only improves the efficiency of textile dyeing wastewater treatment, but also ensures the rational use of microbial resources, reduces unnecessary waste, and maintains the ecological balance of the microbial community in the treatment tank through scientific design and advanced control technology. In addition, it also helps to recycle water resources, reduce environmental pollution, and provide technical support for the sustainable development of the textile dyeing industry. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the structure of the microorganism release mechanism housing in an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the main structure of the microorganism release mechanism in an embodiment of the present application;

[0030] Figure 4 is a schematic diagram of the transmission structure of the microorganism release mechanism in an embodiment of the present application;

[0031] Figure 5 is a schematic diagram of the transmission assembly structure of the microorganism release mechanism in an embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the transmission assembly structure of the microorganism release mechanism in an embodiment of the present application;

[0033] : 1, microbial treatment tank; 2, support; 3, driving device; 4, stirring shaft; 5, microbial culture bin; 6, microbial release mechanism; 61, first opening and closing mechanism; 62, second opening and closing mechanism; 63, third opening and closing mechanism; 601, shell; 602, reserved hole; 603, sterile bin; 604, sterile pipeline; 605, culture solution bin; 606, mixing pipeline; 607, sliding rail; 608, sliding block; 609, positioning seat; 610, servo motor; 611, screw rod; 612, internal thread block; 613, arc-shaped groove; 614, first positioning disc; 615, movable disc; 616, second positioning disc; 617, liquid inlet hole; 618, positioning block; 619, arc-shaped limiting rod; 620, arc-shaped spring; 621, movable block; 622, sleeve hole; 623, roller. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The application will be further described in detail.

[0035] The embodiment of the application discloses a textile printing and dyeing wastewater treatment and recycling system. Figure 1 As shown in the figure, a textile printing and dyeing wastewater treatment and recycling system comprises a microbial treatment tank 1, a support 2 is fixedly installed at the top of the microbial treatment tank 1, a driving device 3 is fixedly installed at the top of the support 2, a stirring shaft 4 is fixedly installed at the bottom of the driving device 3, a microbial culture bin 5 is fixedly installed at one side of the microbial treatment tank 1, a microbial release mechanism 6 is further arranged at one side of the support 2, the microbial release mechanism 6 comprises a shell 601 and a reserved hole 602, the shell 601 is fixedly installed at one side of the microbial treatment tank 1, the bottom of the shell 601 is provided with the reserved hole 602, and the reserved hole 602 penetrates through the shell 601 and the microbial treatment tank 1;

[0036] Please refer to Figures 2 to 6The microorganism releasing mechanism 6 comprises a first opening and closing mechanism 61, a second opening and closing mechanism 62 and a third opening and closing mechanism 63. The first opening and closing mechanism 61, the second opening and closing mechanism 62 and the third opening and closing mechanism 63 each comprise a first positioning disc 614, a movable disc 615, a second positioning disc 616, a liquid inlet hole 617, a positioning block 618, an arc-shaped limiting rod 619, an arc-shaped spring 620, a movable block 621, a sleeve hole 622 and a roller 623. The first positioning disc 614, the movable disc 615 and the second positioning disc 616 are arranged inside the shell 601. The first positioning disc 614, the movable disc 615 and the second positioning disc 616 each have the liquid inlet hole 617 penetrating through one side. The movable disc 615 is fixedly connected with the movable block 621 on one side. The movable block 621 is movably mounted with the roller 623 on one side. The movable block 621 is provided with the sleeve hole 622 on one side. The arc-shaped limiting rod 619 is movably sleeved in the sleeve hole 622. The arc-shaped limiting rod 619 is externally sleeved with the arc-shaped spring 620. The arc-shaped limiting rod 619 is fixedly connected with the positioning block 618 on one side.

[0037] The microorganism releasing mechanism 6 further comprises a sterile bin 603, a sterile pipeline 604, a culture solution bin 605, a mixing pipeline 606, a sliding rail 607, a sliding block 608, a positioning seat 609, a servo motor 610, a lead screw 611, an internally threaded block 612 and an arc-shaped groove 613. The sterile bin 603 is fixedly installed inside the shell 601. The sterile bin 603 is communicated with the sterile pipeline 604 at the bottom. The sterile pipeline 604 is communicated with the culture solution bin 605 at the bottom. The culture solution bin 605 is communicated with the mixing pipeline 606 on one side. The mixing pipeline 606 is provided with the sliding rail 607 on one side. The sliding rail 607 is movably installed with the sliding block 608 at the top through dovetail grooves. The sliding rail 607 is fixedly connected with the positioning seat 609 on one side. The positioning seat 609 is fixedly installed with the servo motor 610 at the top. The servo motor 610 is fixedly installed with the lead screw 611 at the output end. The lead screw 611 is movably installed with the internally threaded block 612 on one side through a threaded groove. The mixing pipeline 606 is provided with the arc-shaped groove 613 on one side.

[0038] The movable disc 615 is movably installed in the middle of the first positioning disc 614 and the second positioning disc 616. The connection between the movable disc 615 and the first positioning disc 614 and the second positioning disc 616 is provided with an X-shaped sealing ring. The movable block 621 is movably installed inside the arc-shaped groove 613. The first positioning disc 614, the movable disc 615 and the second positioning disc 616 are movably installed inside the mixing pipeline 606. The first positioning disc 614 and the second positioning disc 616 are each provided with a limiting ring fixedly installed inside the mixing pipeline 606.

[0039] The mixing pipe 606 is fixedly installed at the bottom of the shell 601 and communicates with the microbial treatment tank 1 through the reserved hole 602. The mixing pipe 606 is divided into four closed cavities by the first opening and closing mechanism 61, the second opening and closing mechanism 62 and the third opening and closing mechanism 63.

[0040] The cross section of the movable block 621 is F-shaped. The rollers 623 are fixed at the openings in the side of the movable block 621. One side of the arc-shaped limiting rod 619 is fixedly connected with the movable block 621, and the other side of the arc-shaped limiting rod 619 is fixedly connected with the positioning block 618 which is fixedly installed at the top of the mixing pipe 606.

[0041] The movable block 621 is fixedly connected with a plurality of trapezoidal protrusions. The cross section of the trapezoidal protrusions is arc-shaped plate. The curvature of the arc-shaped plate is the same as that of the arc-shaped limiting rod 619. The arc-shaped plate on one side of the movable block 621 is movably connected with one side of the roller 623.

[0042] The maximum moving distance of the inner threaded block 612 is equal to the length of the arc-shaped plate on one side of the movable block 608. The slide rail 607 is fixedly installed in the inner portion of the shell 601.

[0043] It should be further explained that the textile printing and dyeing wastewater treatment and recycling equipment mainly relies on the microorganisms in the microbial treatment tank 1 to purify and treat the printing and dyeing wastewater. The microbial culture bin 5 is responsible for culturing and storing microorganisms with specific degradation ability. During the treatment process, the driving device 3 drives the stirring shaft 4 to stir in the microbial treatment tank 1, so that the wastewater and the microorganisms are fully mixed and contacted, and the decomposition and metabolism of the microorganisms on the organic pollutants in the wastewater are promoted. The microbial release mechanism 6 plays a key role in precisely controlling the release of microorganisms from the culture bin or the culture liquid bin 605 to the microbial treatment tank 1, ensuring that the microorganisms are released at the right time and in the right amount to maintain the activity and quantity balance of the microbial community in the treatment tank, so as to continuously and efficiently treat the wastewater.

[0044] The first opening and closing mechanism 61, the second opening and closing mechanism 62 and the third opening and closing mechanism 63:

[0045] The first positioning disc 614, the movable disc 615 and the second positioning disc 616: the three discs cooperate with each other to control the opening and closing degree of the liquid inlet hole 617 by the movement of the movable disc 615 between the first positioning disc 614 and the second positioning disc 616. When the liquid inlet hole 617 of the movable disc 615 is completely aligned with the liquid inlet hole 617 of the first positioning disc 614 and the second positioning disc 616, the liquid can flow smoothly; when the movable disc 615 moves to misalign the liquid inlet hole 617, the liquid flow will be reduced or even completely blocked. The X-shaped sealing ring ensures the sealing between the discs in different opening and closing states to prevent liquid leakage or cross flow.

[0046] The movable block 621 is a linkage component of the movable disc 615, and the F-shaped cross section design makes it more stable when moving in the arc-shaped groove 613, and can effectively cooperate with other components such as the roller 623 and the arc-shaped limiting rod 619. When the sliding block 608 moves on the sliding rail 607, the movable block 621 is pushed to move by the contact between the trapezoidal protrusion and the roller 623, and then the movable disc 615 is moved, so that the opening adjustment of the liquid inlet hole 617 is realized.

[0047] The arc-shaped limiting rod 619 cooperates with the sleeve hole 622 to limit the movement track of the movable block 621, so that the movable block 621 can only move in a specific direction in the arc-shaped groove 613. The arc-shaped spring 620 provides a restoring force for the movable block 615, and when the pushing force of the sliding block 608 disappears, the movable block 615 can return to the initial position under the action of the arc-shaped spring 620, so as to close or adjust the opening of the liquid inlet hole 617. The positioning block 618 is fixed on the top of the mixing pipeline 606, and provides a stable support point for the arc-shaped limiting rod 619, so as to ensure the stability and reliability of the whole structure.

[0048] The mixing pipeline 606 is mainly used for fully mixing the microorganisms and the culture solution and then conveying them to the microorganism treatment tank 1. The internal structure design is beneficial to promote the mixing effect, for example, a venturi structure or an internal static mixer can be arranged. The mixing pipeline 606 is divided into four sealed cavities by the first opening and closing mechanism 61, the second opening and closing mechanism 62 and the third opening and closing mechanism 63. The partition design can realize independent control of different regions, and different types or quantities of microorganisms and culture solutions can be put into different regions according to the treatment requirements, so as to improve the flexibility and accuracy of the treatment. The connection parts of the mixing pipeline 606, the outer shell 601 and the microorganism treatment tank 1 are sealed, so as to prevent leakage.

[0049] The implementation principle of the textile printing and dyeing wastewater treatment and recycling system is as follows: first, the microorganism culture bin 5 is used to culture specific microorganism groups under suitable temperature, nutrient supply and dissolved oxygen conditions. The cultured microorganisms can enter the culture solution bin 605 through the sterile pipeline 604 and mix with the culture solution in the bin.

[0050] Secondly, after the equipment is started, the driving device 3 drives the stirring shaft 4 to rotate in the microorganism treatment tank 1, and the printing and dyeing wastewater in the tank is stirred to form a good flow state.

[0051] When the microorganism release mechanism 6 is in operation, the servo motor 610 drives the lead screw 611 to rotate according to a preset program or sensor feedback signals, thereby driving the internal threaded block 612 to move, and the internal threaded block 612 drives the sliding block 608 to slide on the sliding rail 607. The trapezoidal protrusion on one side of the sliding block 608 pushes the roller 623, which drives the movable block 621 to move in the arc-shaped groove 613. Since the movable block 621 is connected to the movable disc 615, the movable disc 615 moves between the first positioning disc 614 and the second positioning disc 616, thereby adjusting the relative positions of the three liquid inlet holes 617 and controlling the flow rate and speed of the mixture of microorganisms and culture solution flowing from the mixing pipeline 606 into the microbial treatment tank 1 through the reserved hole 602.

[0052] Finally, the microorganisms flowing into the microbial treatment tank 1 fully contact with the printing and dyeing wastewater, and the microorganisms use the organic pollutants in the wastewater as a nutrient source for growth, reproduction and metabolic activity, gradually decomposing and converting the organic pollutants, thereby reducing the content of harmful substances in the wastewater and achieving purification treatment of the wastewater. The treated water can be further recycled and reused according to actual conditions, for example, used in the rinsing and other links in the printing and dyeing process, to achieve the purpose of recycling of water resources, reduce the dependence on fresh water resources and reduce environmental pollution.

[0053] In order to ensure that the microorganism release mechanism 6 can accurately control the release of microorganisms from the culture bin or culture solution bin 605 to the microbial treatment tank 1, so as to maintain the activity and quantity balance of the microbial community in the treatment tank, thereby continuously and efficiently treating the wastewater, it is necessary to accurately calculate the amount of microorganisms to be released. The following are the specific details:

[0054] First, the required amount of microorganisms is calculated according to the microorganism release amount calculation formula, wherein the microorganism release amount calculation formula is:

[0055]

[0056] In the formula, W(t) is the required amount of microorganisms at time t, C is the concentration of organic pollutants, V is the total volume of wastewater, M is the amount of organic matter that can be degraded by per unit mass of microorganisms per unit time, t is the treatment time; f(t) is a time-dependent activity function that describes the activity level of the microbial population over time.

[0057] The activity level of the microbial population over time f(t) is a time-varying microbial activity function fitted according to experimental data, which is used to represent the microbial degradation efficiency in different time periods.

[0058] The mathematical model expression of f(t) is:

[0059]

[0060] In the formula, K is the maximum carrying capacity, i.e. the maximum activity or quantity of the microbial population; r is the growth rate; t0 is the midpoint on the time axis, i.e. f(t) = K / 2 when t = t0.

[0061] Through this function, the amount of microorganisms can be adjusted at different processing stages. For example, fewer microorganisms may be needed during the early adaptation period, while the amount of microorganisms is increased during the exponential growth period to accelerate the processing process; after entering the stable period, the amount of microorganisms is reduced to avoid waste of resources. By introducing the time-dependent activity function f(t) to dynamically adjust the amount of microorganisms, the working efficiency of the textile printing and dyeing wastewater treatment and recycling equipment can be greatly improved, ensuring the ecological balance in the microbial treatment tank, and ultimately achieving effective purification of wastewater and recycling of water resources. This not only helps to improve processing efficiency, but also ensures the rational use of microbial resources and reduces unnecessary waste.

[0062] When applying the above calculation results to actual operations, the amount of microorganisms required at any given time (t) is calculated according to the wastewater treatment requirements and the time-dependent activity function f(t), and based on the required amount of microorganisms W(t), the corresponding target flow rate Q target (t) is obtained through experiments or simulations; the target flow rate Q target (t) is closely combined with the actual operation of the equipment. Through the stable microorganism source provided by the sterile bin 603 and the culture solution bin 605, combined with the internal structure design of the mixing pipeline 606 to promote the full mixing of microorganisms and culture solution, and the precise control of the flow rate by the first opening and closing mechanism 61, the second opening and closing mechanism 62, and the third opening and closing mechanism 63, the release time and amount of microorganisms are precisely controlled. In particular, the high-precision displacement control of the servo motor 610 ensures the accuracy of each release amount, so that the microorganism release mechanism 6 can send microorganisms into the microbial treatment tank 1 at the appropriate time point according to the calculated optimal release amount, thereby achieving the most ideal wastewater treatment effect. Specifically, the displacement Δx target (t) required to achieve the target flow rate Q target (t) is solved using the relationship between flow rate and displacement, and the displacement Δx of the movable disc 615 relative to the first positioning disc 614 and the second positioning disc 616 determines the opening degree of the liquid inlet hole 617, which in turn affects the flow rate Q. The relationship between the flow rate Q and the displacement Δx of the movable disc 615 is:

[0063] Q = A · Δx + B;

[0064] In the formula, Q is the actual flow rate through the liquid inlet hole 617; Δx is the displacement of the movable disc 615 relative to the initial position; A and B are empirical constants determined by experiments, representing the sensitivity of flow rate to displacement and the baseline flow rate, respectively.

[0065] To achieve the target flow rate Qtarget (t), the corresponding displacement Δx target (t) needs to be solved

[0066]

[0067] The servo motor 610 drives the inner threaded block 612 through the lead screw 611, and then the inner threaded block 612 drives the sliding block 608 to move along the slide rail 607, finally pushing the movable block 621 and the movable disc 615 to move to the required position. In order to realize this process, the target displacement Δx target (t) calculated above needs to be converted into the angle or step number of the servo motor. Define the displacement D caused by one rotation of the lead screw 611 as the lead screw pitch, then the rotation angle θ of the servo motor 610 can be expressed as:

[0068]

[0069] Substitute the expression of Δx target (t) into the above formula, we get:

[0070]

[0071] In the formula,

[0072] θ: rotation angle of the servo motor 610 (degrees), which is the target value to be calculated, used to control the rotation amount of the servo motor;

[0073] Q target (t): target flow, i.e. the flow of microorganisms mixed with culture solution required at time (t). It is calculated according to the amount of microorganisms W(t) required for wastewater treatment and the time-dependent activity function (f(t));

[0074] B: baseline flow (L / h), which is an empirical constant representing the minimum or basic flow when the movable disc 615 is in the initial position;

[0075] A: flow sensitivity coefficient (L / h·mm), which is also an empirical constant, indicating the degree of influence of unit displacement (mm) on flow (L / h), i.e. the amount of flow change caused by moving 1 mm;

[0076] D: lead screw pitch (mm / turn), which refers to the linear displacement caused by one rotation of the lead screw, and it is a mechanical parameter depending on the specific specifications of the lead screw used;

[0077] 360°: complete circumferential angle (degrees), used here to convert linear displacement to angle, ensuring that the rotation angle of the servo motor is in degrees.

[0078] To ensure the actual output of the servo motor 610 consistent with the theoretical value, a closed-loop control system is adopted. The system will monitor the actual flow Q actual real-time, and obtain the current displacement information Δx actual If the deviation is detected, the working state of the servo motor 610 is automatically adjusted until the actual flow Q actual approaches or equals the target flow Q target t. In the embodiment, considering the demand changes in different time periods, a PID control algorithm is introduced to optimize the motion characteristics of the servo motor 610, including the speed and smooth acceleration and deceleration performance, to improve the stability and response speed of the system.

[0079] Through the specific control formula of the servo motor 610 described above, accurate control of the displacement of the movable disc 615 in the microorganism release mechanism 6 can be achieved, thereby ensuring that each operation can accurately reach the preset position and the microorganisms are sent into the microorganism treatment tank 1 according to the calculated optimal release amount. This not only improves the treatment efficiency, but also ensures the rational use of microorganism resources, reduces unnecessary waste, and maintains the ecological balance of the microorganism community in the treatment tank.

[0080] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made in terms of structure, shape, and principle according to the present application should be covered within the protection scope of the present application.

Claims

1. A textile dyeing and printing wastewater treatment and reuse system, comprising a microbial treatment tank (1), characterized in that: A bracket (2) is fixedly installed on the top of the microbial treatment tank (1), a drive device (3) is fixedly installed on the top of the bracket (2), a stirring shaft (4) is fixedly installed on the bottom of the drive device (3), a microbial culture chamber (5) is fixedly installed on one side of the microbial treatment tank (1), and a microbial release mechanism (6) is also provided on one side of the bracket (2). The microbial release mechanism (6) includes a shell (601) and a reserved hole (602). The shell (601) is fixedly installed on one side of the microbial treatment tank (1), and a reserved hole (602) is opened at the bottom of the shell (601), and the reserved hole (602) penetrates the shell (601) and the microbial treatment tank (1). The microbial release mechanism (6) includes a first opening and closing mechanism (61), a second opening and closing mechanism (62), and a third opening and closing mechanism (63). Each of the first opening and closing mechanism (61), the second opening and closing mechanism (62), and the third opening and closing mechanism (63) includes a first positioning plate (614), a movable plate (615), a second positioning plate (616), a liquid inlet (617), a positioning block (618), an arc-shaped limiting rod (619), an arc-shaped spring (620), a movable block (621), a sleeve hole (622), and a roller (623). The first positioning plate (614), the movable plate (615), and the second positioning plate (616) are all equipped with... Inside the outer casing (601), the first positioning disk (614), the movable disk (615), and the second positioning disk (616) are each provided with a liquid inlet hole (617) on one side. A movable block (621) is fixedly connected to one side of the movable disk (615). A roller (623) is movably installed on one side of the movable block (621). A sleeve hole (622) is provided on one side of the movable block (621). An arc-shaped limiting rod (619) is movably sleeved inside the sleeve hole (622). An arc-shaped spring (620) is sleeved on the outside of the arc-shaped limiting rod (619). A positioning block (618) is fixedly connected to one side of the arc-shaped limiting rod (619). Configuring the dispensing accuracy of the microbial release mechanism (6) includes the following steps: First, based on the wastewater treatment requirements and the time-dependent activity function f(t), the required microbial mass W(t) at any given time (t) is calculated, and then the corresponding target flow rate Q is determined. target (t); the target flow rate Q is obtained by using the relationship between flow rate and displacement. target (t) Required displacement of the moving disk Δx target (t), the displacement Δx target (t) is converted into the rotation angle θ of the servo motor to obtain the final rotation angle formula, and the actual flow rate Q is monitored in real time. actual And obtain the current displacement information Δx through the encoder. actual To ensure that the actual output of the servo motor matches the theoretical value, adjustments are made. The formula for calculating the amount of microorganisms to be added is: ； The mathematical model expression for f(t) is: ； In the formula, W(t) is the required microbial mass at time t, C is the concentration of organic pollutants, V is the wastewater volume (total volume of wastewater to be treated), M is the amount of organic matter that can be degraded by each unit mass of microorganisms per unit time, and t is the treatment time; f(t) is the time-dependent activity function, describing the activity level of the microbial community over time; K is the maximum carrying capacity, i.e., the maximum activity or number of the microbial community, r is the growth rate, and t0 is the midpoint on the time axis, i.e., when t=t0, f(t)=K / 2; The final formula for the rotation angle is: ； In the formula, θ is the rotation angle of the servo motor, and Q target (t) is the target flow rate, which is the required flow rate of microorganisms and culture medium after mixing at time (t). B is the baseline flow rate, which is an empirical constant. A is the flow sensitivity coefficient, which is an empirical constant. D is the screw pitch.

2. The textile dyeing and printing wastewater treatment and reuse system according to claim 1, characterized in that: The microbial release mechanism (6) further includes a sterile chamber (603), a sterile pipe (604), a culture medium chamber (605), a mixing pipe (606), a slide rail (607), a slider (608), a positioning seat (609), a servo motor (610), a lead screw (611), an internal thread block (612), and an arc groove (613). The sterile chamber (603) is fixedly installed inside the outer shell (601). The bottom of the sterile chamber (603) is connected to the sterile pipe (604), and the bottom of the sterile pipe (604) is connected to the culture medium chamber (605). One side of the culture medium chamber (605) A mixing pipe (606) is connected to the mixing pipe (606). A slide rail (607) is provided on one side of the mixing pipe (606). A slider (608) is movably installed on the top of the slide rail (607) through a dovetail groove. A positioning seat (609) is fixedly connected to one side of the slide rail (607). A servo motor (610) is fixedly installed on the top of the positioning seat (609). A lead screw (611) is fixedly installed at the output end of the servo motor (610). An internal thread block (612) is movably installed on one side of the lead screw (611) through a threaded groove. An arc groove (613) is opened on one side of the mixing pipe (606).

3. A textile dyeing and printing wastewater treatment and reuse system according to claim 1, characterized in that: The movable disc (615) is movably installed between the first positioning disc (614) and the second positioning disc (616), and an X-shaped sealing ring is provided at the connection between the movable disc (615) and the first positioning disc (614) and the second positioning disc (616). The movable block (621) is movably installed inside the arc groove (613). The first positioning disc (614), the movable disc (615), and the second positioning disc (616) are all movably installed inside the mixing pipe (606), and a limit ring is provided on one side of the first positioning disc (614) and the second positioning disc (616). The limit ring is fixedly installed inside the mixing pipe (606).

4. The textile dyeing and printing wastewater treatment and reuse system according to claim 2, characterized in that: The mixing pipe (606) is fixedly installed at the bottom of the outer shell (601), and the mixing pipe (606) is connected to the microbial treatment tank (1) through the reserved hole (602). The mixing pipe (606) is divided into 4 sealed cavities by the first opening and closing mechanism (61), the second opening and closing mechanism (62) and the third opening and closing mechanism (63).

5. The textile dyeing and printing wastewater treatment and reuse system according to claim 1, characterized in that: The movable block (621) has an F-shaped cross section. The roller (623) is fixed at the opening on the side of the movable block (621). One side of the arc-shaped limiting rod (619) is fixedly connected to the movable block (621), and the other side of the arc-shaped limiting rod (619) is fixedly connected to the positioning block (618). The positioning block (618) is fixedly installed on the top of the mixing pipe (606).

6. The textile dyeing and printing wastewater treatment and reuse system according to claim 2, characterized in that: Multiple trapezoidal protrusions are fixedly connected to one side of the slider (608). The cross-section of the multiple trapezoidal protrusions is an arc plate, and the arc of the multiple arc plates is the same as the arc of the arc-shaped limiting rod (619). The multiple arc plates on one side of the slider (608) are movably connected to one side of the roller (623).

7. The textile dyeing and printing wastewater treatment and reuse system according to claim 2, characterized in that: The maximum distance that the internal threaded block (612) moves is equal to the length of multiple arc plates on one side of the slider (608), and the slide rail (607) is fixedly installed inside the housing (601).

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