Concrete cleaning wastewater recovery treatment system and control method

Abstract

The embodiment of the invention discloses a concrete cleaning wastewater recovery treatment system. The system comprises a wastewater storage and transportation device, a clear water storage and transportation device, a mixed storage and transportation device, a transmission assembly, a feeding amount detection device, a wastewater solid content detection assembly, a homogenizing device and a main controller, the master controller comprises first-stage control and second-stage control, in the first stage, the master controller controls the transmission assembly to add the wastewater and the clear water until the addition amount detection device detects that the addition amount of the wastewater is equal to the target addition amount and the addition amount of the clear water is equal to the first addition amount, and in the second stage, the transmission assembly transmits the wastewater and the clear water to the master controller; and in the second stage, the main controller controls the transmission assembly to continuously add the clear water until the addition amount detection device detects that the addition amount of the clear water is equal to the second addition amount. According to the embodiment of the invention, wastewater and clear water are precisely added in stages, so that the wastewater recycling standard is met, and meanwhile, the homogenizing device is effectively flushed to prevent blockage.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete wastewater treatment, and particularly to a concrete cleaning wastewater recycling and treatment system and a control method for a concrete cleaning wastewater recycling and treatment system. Background Art

[0002] With the rapid development of the construction industry, concrete, as the most basic and widely used building material, generates a large amount of cleaning wastewater during the cleaning operations of concrete mixing equipment, transport vehicles, and construction tools. The concrete cleaning wastewater contains high concentrations of suspended solids, alkaline substances, etc. Direct discharge without treatment will cause serious pollution to the environment. How to effectively treat concrete cleaning wastewater for recycling has become an urgent problem to be solved in the construction industry and the environmental protection field. Summary of the Invention

[0003] In view of at least some problems and deficiencies in the prior art, embodiments of the present invention disclose a concrete cleaning wastewater recycling and treatment system and a control method for a concrete cleaning wastewater recycling and treatment system. By determining the target dosing amounts of wastewater and clean water and dosing in stages, while the wastewater meets the solid content standard for recycling, blockage of the homogenizing device is prevented.

[0004] On the one hand, a concrete cleaning wastewater recycling and treatment system provided by an embodiment of the present invention includes: a wastewater storage and transportation device, a clean water storage and transportation device, a mixed storage and transportation device, a transmission assembly, a dosing amount detection device, a wastewater solid content detection assembly, and a main controller. The wastewater storage and transportation device and the clean water storage and transportation device are respectively connected to the mixed storage and transportation device through the transmission assembly. The dosing amount detection device, the transmission assembly, and the wastewater solid content detection assembly are all electrically connected to the main controller. The transmission assembly includes a homogenizing device, and the homogenizing device is used to circulate wastewater and clean water together.

[0005] The main controller is used to determine the target dosing amount of the wastewater and the target dosing amount of the clean water according to the detection data of the wastewater solid content detection assembly. At the same time, the main controller is used to determine the first dosing amount and the second dosing amount of the clean water according to the volume of the homogenizing device and the target dosing amount of the clean water.

[0006] The main controller controls the transmission assembly to dose in a first stage and a second stage. The first stage is to dose the wastewater and the clean water until the dosing amount detection device detects that the dosing amount of the wastewater is equal to the target dosing amount and the dosing amount of the clean water is equal to the first dosing amount. The second stage is to continue dosing the clean water until the dosing amount detection device detects that the dosing amount of the clean water is equal to the second dosing amount.

[0007] In an embodiment of the present invention, the concrete cleaning wastewater recovery and treatment system further includes a homogenizing agent storage and transportation device, which is connected to the mixing storage and transportation device through the transmission assembly and is used to add a homogenizing agent to the mixing storage and transportation device.

[0008] In an embodiment of the present invention, the main controller is used to determine the target dosage of the homogenizing agent according to the detection data of the wastewater solid content detection component. The main controller controls the transmission assembly to add the homogenizing agent simultaneously with the clean water and the wastewater in the first stage until the dosage detection device detects that the dosage of the homogenizing agent is equal to the target dosage.

[0009] In an embodiment of the present invention, the homogenizing agent storage and transportation device is connected to the mixing storage and transportation device through the homogenizing device.

[0010] In an embodiment of the present invention, the concrete cleaning wastewater recovery and treatment system further includes a mixing liquid level detection component. When the main controller detects that the liquid level in the mixing storage and transportation device is lower than the first liquid level according to the mixing liquid level detection component, the main controller enters the first stage.

[0011] In an embodiment of the present invention, the concrete cleaning wastewater recovery and treatment system further includes a wastewater liquid level detection component, which is arranged in the wastewater tank to detect the wastewater liquid level value. When the liquid level value of the wastewater is lower than the preset liquid level value, the main controller controls the transmission assembly to stop adding.

[0012] In an embodiment of the present invention, the mixing liquid level detection component is arranged in the mixing storage and transportation device to detect the mixing liquid level value. When the mixing liquid level value is higher than or equal to the preset mixing liquid level value, the main controller controls the transmission assembly to stop adding.

[0013] In an embodiment of the present invention, the concrete cleaning wastewater recovery and treatment system further includes a mixing solid content detection component arranged in the mixing storage and transportation device, which is used to detect the solid content of the mixed liquid in the mixing storage and transportation device.

[0014] When the solid content is greater than the preset solid content, the main controller is used to determine the third dosage of the clean water according to the current solid content and the preset solid content. The main controller controls the transmission assembly to add the clean water into the mixing storage and transportation device until the third dosage is reached.

[0015] On the other hand, a method for recycling and treating concrete cleaning wastewater provided by an embodiment of the present invention includes: the main controller determines the target dosing amount of the wastewater and the target dosing amount of the clear water according to the solid content of the wastewater in the wastewater storage and transportation device detected by the wastewater solid content detection component. Among them, the main controller determines the first dosing amount and the second dosing amount of the clear water according to the volume of the homogenizing device and the target dosing amount of the clear water.

[0016] The main controller includes a first stage and a second stage to control the transmission component to dose the wastewater and the clear water into the mixing storage and transportation device. The main controller controls the transmission component to start the first stage dosing, dosing the wastewater and the clear water into the mixing storage and transportation device until the dosing amount detection device detects that the dosing amount of the wastewater is equal to the target dosing amount and the dosing amount of the clear water is equal to the first dosing amount, then the main controller controls the transmission component to stop dosing the wastewater.

[0017] The main controller controls the transmission component to start the second stage dosing, continue to dose the clear water into the mixing storage and transportation device until the dosing amount detection device detects that the total dosing amount of the clear water is equal to the second dosing amount, and the main controller controls the transmission component to stop dosing.

[0018] In an embodiment of the present invention, the main controller determines the target dosing amount of the wastewater and the target dosing amount of the clear water according to the solid content of the wastewater in the wastewater storage and transportation device detected by the wastewater solid content detection component, a preset mixed solid content, and a preset mixed volume. Among them, the second dosing amount of the clear water is determined according to the volume of the homogenizing device, and the first dosing amount of the clear water is determined by subtracting the second dosing amount of the clear water from the target dosing amount of the clear water.

[0019] As can be seen from the above, the above technical features of the present invention can have one or more of the following beneficial effects: calculating the target dosing amounts of the wastewater and the clear water according to the solid content of the wastewater detected by the wastewater solid content detection component, realizing accurate dosing in stages, making the mixed liquid after mixing more uniform and meeting the solid content standard for wastewater recycling and utilization. By setting up a homogenizing device, the wastewater, clear water, and homogenizing agent are quickly and evenly preliminarily mixed, accelerating the reaction speed. At the same time, dosing clear water in the second stage effectively flushes the homogenizing device to prevent blockage and other situations. Among them, the mixed liquid can be proportioned based on the actual usage requirements, reducing resource waste. Secondly, through the mixed liquid level detection component and the main controller, the monitoring and automatic dispensing of the mixed liquid level are realized, greatly improving the dispensing efficiency. Thirdly, the wastewater after proportioning contains a homogenizing agent, which changes the liquid properties, and effectively improves the concrete strength when subsequently put into concrete production. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a concrete cleaning wastewater recycling and treatment system provided by an embodiment of the present invention.

[0022] Figure 2 For Figure 1 Another schematic structural diagram of the concrete cleaning wastewater recycling and treatment system in

[0023] Figure 3 For Figure 1 A flowchart of the concrete cleaning wastewater recycling and treatment system in

[0024]

Description of the reference numerals

[0025] 1: Concrete cleaning wastewater recycling and treatment system; 10: Wastewater storage and transportation device; 101: Wastewater lift pump; 102: Clean water lift pump; 103: Homogenizing agent delivery pump; 104: Wastewater delivery pipe; 11: Clean water storage and transportation device; 110: Clean water delivery pipe; 12: Homogenizing agent storage and transportation device; 120: Homogenizing agent delivery pipe; 20: Dosage detection device; 201: Wastewater flow detection device; 202: Clean water flow detection device; 203: Homogenizing agent flow detection device; 204: Valve; 205: Check valve; 30: Wastewater solid content detection component; 31: Mixed solid content detection component; 40: Mixed storage and transportation device; 50: Homogenizing device; 51: Mixer; 60: Mixed liquid level detection component; 61: Wastewater liquid level detection component; 70: Finished product storage and transportation component. Specific embodiments

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the specific embodiments and corresponding drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] It should also be noted that the division of multiple embodiments in the present invention is only for convenience of description and should not constitute a special limitation. The features in various embodiments can be combined and cross-referenced without conflict.

[0029] Referring to Figure 1 and Figure 3 As shown, a concrete cleaning wastewater recycling and treatment system 1 provided by an embodiment of the present invention includes: a wastewater storage and transportation device 10, a clean water storage and transportation device 11, a mixed storage and transportation device 40, a transmission component, a dosing amount detection device 20, a wastewater solid content detection component 30, and a main controller. The transmission component includes a homogenizing device 50. The wastewater storage and transportation device 10 and the clean water storage and transportation device 11 are respectively connected to the mixed storage and transportation device 40 through the homogenizing device 50. The dosing amount detection device 20, the transmission component, and the wastewater solid content detection component 30 are all electrically connected to the main controller.

[0030] The main controller is used to determine the target dosing amount of wastewater and the target dosing amount of clean water according to the detection data of the wastewater solid content detection component 30. At the same time, the main controller is used to determine the first dosing amount and the second dosing amount of clean water according to the volume of the homogenizing device 50 and the target dosing amount of clean water.

[0031] The main controller includes first-stage and second-stage controls. In the first stage, the main controller controls the transmission component to dose wastewater and clean water until the dosing amount detection device 20 detects that the dosing amount of wastewater is equal to the target dosing amount and the dosing amount of clean water is equal to the first dosing amount. In the second stage, the main controller controls the transmission component to continue dosing clean water until the dosing amount detection device 20 detects that the dosing amount of clean water is equal to the second dosing amount.

[0032] Specifically, the wastewater storage and transportation device 10 is a container for storing concrete washing wastewater, which can be, for example, a concrete tank. The clean water storage and transportation device 11 is a container for storing clean water, which can be, for example, a clean water tank. The mixed liquid storage and transportation device 40 is a container for storing the mixed liquid composed of wastewater and clean water, which can be, for example, a mixed liquid tank. The transmission component is a device or component for transporting wastewater and clean water. The transmission component can, for example, include a transportation pipeline and a delivery pump for extracting clean water and wastewater and delivering them into the mixed liquid storage and transportation device 40. The dosing detection device 20 is a flowmeter for detecting the dosing amounts of wastewater and clean water. The flowmeter can, for example, be an electromagnetic flowmeter. The wastewater solid content detection component 30 is used to detect the proportion of solid content in the wastewater. It can, for example, be a density detector. In this embodiment, the density detector can, for example, be a tuning fork density meter. The main controller is used to receive the internal signals of the concrete washing wastewater recycling and treatment system 1, process and analyze the signals according to preset programs or rules, and finally issue corresponding control instructions to coordinate and manage the work of each component and device in the system to ensure the operation of the system. The main controller can, for example, be an MCU.

[0033] In some embodiments, the concrete washing wastewater recycling and treatment system 1 further includes a plurality of mixers 51, which are respectively arranged in the wastewater storage and transportation device 10 and the mixed liquid storage and transportation device 40 for stirring the liquid in the devices to prevent solid substances from precipitating. The transmission component includes a wastewater delivery pipe 104 and a clean water delivery pipe 110. The wastewater delivery pipe 104 connects the wastewater storage and transportation device 10 and the mixed liquid storage and transportation device 40, and the clean water delivery pipe 110 connects the clean water storage and transportation device 11 and the mixed liquid storage and transportation device 40.

[0034] The transmission component includes a homogenizing device 50. The liquid inlet end of the homogenizing device 50 is connected to the wastewater delivery pipe 104 and the clean water delivery pipe 110, and the liquid outlet end of the homogenizing device 50 is connected to the mixed liquid storage and transportation device 40. The homogenizing device 50 is used to mix wastewater and clean water to obtain a mixed liquid and deliver the mixed liquid to the mixed liquid storage and transportation device 40. The homogenizing device 50 enables the wastewater and clean water to be quickly and evenly preliminarily mixed. Then, the mixed liquid entering the mixed liquid storage and transportation device 40 has higher macroscopic stability and is not prone to stratification or precipitation.

[0035] The wastewater solid content detection component 30 detects the solid content of the wastewater in the wastewater storage and transportation device 10 and sends it to the main controller. The main controller calculates the target dosing amount of wastewater and the target dosing amount of clean water based on the currently detected wastewater solid content, the set density of the finished product that can meet the wastewater recycling standard, and the water consumption per cubic meter of concrete. The set density of the finished product is the density value of the production mixing water automatically formulated, and the water consumption per cubic meter of concrete is the actual water consumption per cubic meter of concrete after deducting the water content of sand and gravel. At the same time, the main controller calculates the first dosing amount and the second dosing amount of clean water based on the volume of the homogenizing device 50 and the target dosing amount of clean water.

[0036] The wastewater and clean water are respectively transported to the mixing and storage device 40 according to the target dosing amounts, so that the wastewater in the wastewater storage device 10 can be pumped out to repeatedly rinse the concrete mixer truck for recycling. Secondly, the wastewater usually contains various impurities, suspended solids and substances that may cause precipitation. After flowing together with the clean water in the homogenization device 50, some impurities may adhere to the inside of the homogenization device 50, which is likely to cause blockage or scaling. By realizing the staged transportation of the wastewater and the clean water, the clean water in the second stage can timely rinse and remove the residual impurities, keeping the internal flow channel of the homogenization device 50 unblocked, and avoiding affecting the normal flow and mixing effect of the homogenization device 50 due to blockage. Moreover, the mixed liquid can be proportioned based on the actual usage requirements, reducing resource waste. Precise dosing is achieved to make the obtained mixed liquid more uniform and the solid content of the mixed liquid highly accurate, effectively solving the problem of low efficiency in intermittently adding clean water to dilute the wastewater. This system realizes automatic preparation based on the main controller, effectively improving the working efficiency of the entire treatment process and shortening the treatment time.

[0037] In addition, a control method for a concrete cleaning wastewater recovery and treatment system 1 provided by an embodiment of the present invention includes: the main controller determines the target dosing amount of the wastewater and the target dosing amount of the clean water according to the solid content of the wastewater in the wastewater storage device 10 detected by the wastewater solid content detection component 30. Among them, the main controller determines the first dosing amount and the second dosing amount of the clean water according to the volume of the homogenization device 50 and the target dosing amount of the clean water.

[0038] The main controller determines the target dosing amounts of the wastewater and the clean water based on the data of the wastewater solid content detection component 30, which can achieve precise dosing and ensure that the solid content of the mixed liquid meets the solid content standard for wastewater recycling. At the same time, the mixed liquid can be prepared according to the actual demand, and precise dosing avoids waste of raw materials.

[0039] The main controller includes a first-stage and a second-stage control transmission component to dose the wastewater and the clean water into the mixing and storage device 40. The main controller controls the transmission component to start the first-stage dosing, dosing the wastewater and the clean water into the mixing and storage device 40 until the dosing amount detection device 20 detects that the dosing amount of the wastewater is equal to the target dosing amount and the dosing amount of the clean water is equal to the first dosing amount, then the main controller controls the transmission component to stop dosing the wastewater. Automatically and precisely transporting the wastewater and the clean water for uniform mixing enables sufficient contact to accelerate the reaction rate, thereby improving the overall efficiency of the system.

[0040] The main controller controls the transmission component to start the second-stage dosing, continuing to dose the clean water into the mixing and storage device 40 until the dosing amount detection device 20 detects that the dosing amount of the clean water is equal to the second dosing amount, and the main controller controls the transmission component to stop dosing.

[0041] The second-stage clear water is conveyed to reach the second dosing amount, realizing the internal flushing of the homogenizing device 50, which can effectively remove the residual substances of the wastewater and keep the inside of the homogenizing device 50 clean and unobstructed. Secondly, the interference of the residual substances to the next batch of proportioned mixed liquid is avoided, so as to ensure that the dosing amount of the wastewater can reach the target dosing amount each time, and the consistency of the product quality is improved.

[0042] In the embodiment of the present invention, the main controller determines the target dosing amount of the wastewater and the target dosing amount of the clear water according to the solid content of the wastewater in the wastewater storage and transportation device 10 detected by the wastewater solid content detection component 30, the preset mixed solid content and the preset mixed volume. Among them, the second dosing amount of the clear water is determined according to the volume of the homogenizing device 50, and the first dosing amount of the clear water is determined by deducting the second dosing amount of the clear water from the target dosing amount of the clear water. By accurately calculating the dosing amounts of the wastewater and the clear water, the situation of over-dosing or under-dosing is avoided, and the utilization efficiency of resources is maximized.

[0043] The target dosing amount V of the wastewater can be calculated according to the following formula 废水 :

[0044]

[0045] where V is the total dosing amount of the prepared mixed liquid finished product; V 废水 is the target dosing amount of the wastewater; ρ 成品 is the preset mixed liquid solid content; ρ 废水 is the wastewater solid content.

[0046] The target dosing amount V of the clear water can be calculated according to the following formula 清水 :

[0047]

[0048] where V is the total dosing amount of the prepared mixed liquid finished product; V 清水 is the target dosing amount of the clear water; ρ 成品 is the preset mixed liquid solid content; ρ 废水 is the wastewater solid content.

[0049] In the embodiment of the present invention, the concrete cleaning wastewater recycling and treatment system 1 further includes a homogenizing agent storage and transportation device 12. The homogenizing agent storage and transportation device 12 is connected to the mixing storage and transportation device 40 through a transmission component, and is used to dose the homogenizing agent to the mixing storage and transportation device 40. The transmission component includes a homogenizing agent delivery pipe 120, and the homogenizing agent delivery pipe 120 connects the homogenizing agent storage and transportation device 12 and the mixing storage and transportation device 40. The homogenizing agent storage and transportation device 12 conveys the homogenizing agent to the mixing storage and transportation device 40 through the homogenizing agent delivery pipe 120.

[0050] The homogenizing agent storage and transportation device 12 is a container for storing the homogenizing agent, which can be, for example, a homogenizing agent tank. It is worth mentioning that the homogenizing agent includes propylene glycol, triisopropanolamine, ethylene glycol, sodium polyacrylate or water. Adding a homogenizing agent with a suitable ratio in wastewater treatment effectively improves the performance of the concrete after production, enabling the wastewater to remain non-stratified within 2 to 5 hours. And during the concrete mixing process, it can significantly increase the strength of the concrete, play a positive role in improving the workability of the concrete, and at the same time reduce the concrete viscosity and thus reduce the single-consumption of water for the concrete.

[0051] In an embodiment of the present invention, the main controller is used to determine the target dosage of the homogenizing agent according to the detection data of the wastewater solid content detection component 30. The main controller controls the transmission component to add the homogenizing agent simultaneously with clear water and wastewater in the first stage until the dosage detection device 20 detects that the dosage of the homogenizing agent is equal to the target dosage.

[0052] The main controller calculates the target dosage of the homogenizing agent based on the solid content of the homogenizing agent, the preset mixing volume, the single-consumption of water for the concrete, and the preset mixing solid content. The target dosage V of the homogenizing agent can be calculated according to the following formula 均质剂 :

[0053]

[0054] where V is the total dosage of the prepared mixed liquid product; V 均质剂 is the target dosage of the homogenizing agent; ρ 成品 is the preset solid content of the mixed liquid; ρ 均质剂 is the solid content of the homogenizing agent; M is the single-consumption of water for the concrete.

[0055] The homogenizing agent, wastewater and clear water are added into the mixing storage and transportation device 40 in the first stage. Until the dosage detection device 20 detects that the dosages of the wastewater and the homogenizing agent are equal to the target dosages and the dosage of the clear water is equal to the first dosage, the main controller controls the transmission component to stop adding the wastewater and the homogenizing agent. The homogenizing agent can reduce the surface tension of the liquid, enabling the wastewater and clear water to be quickly and fully mixed together. Adding the homogenizing agent in the first stage allows it to fully diffuse in the liquid, better play its role, improve the mixing efficiency, ensure the uniform composition of the mixed liquid, and provide a reaction basis for subsequent further mixing.

[0056] In an embodiment of the present invention, the homogenizing agent storage and transportation device 12 is connected to the mixing storage and transportation device 40 through the homogenizing device 50. The homogenizing agent, wastewater and clear water are preliminarily and fully mixed when passing through the homogenizing device 50, increasing the contact area and contact opportunities between them, thereby accelerating the speed of the chemical reaction and improving the sufficiency and efficiency of the reaction.

[0057] In an embodiment of the present invention, the concrete cleaning wastewater recovery and treatment system 1 further includes a mixed liquid level detection component 60. When the main controller detects that the liquid level in the mixing storage and transportation device 40 is lower than the first liquid level according to the detection of the mixed liquid level detection component 60, the main controller enters the first stage.

[0058] When the main controller detects that the liquid level in the mixing storage and transportation device 40 is lower than the first liquid level according to the detection of the mixed liquid level detection component 60, the main controller controls the transmission component to start the first-stage dosing into the mixing storage and transportation device 40. When the dosing amount detection device 20 detects that the dosing amounts of wastewater and the homogenizing agent are equal to the target dosing amount and the dosing amount of clear water is equal to the first dosing amount, the main controller controls the transmission component to stop dosing wastewater and the homogenizing agent. And the second-stage dosing is started. The main controller controls the transmission component to continue dosing clear water until the dosing amount detection device 20 detects that the dosing amount of clear water is equal to the second dosing amount and then stops dosing clear water.

[0059] The low liquid level start of dosing by the mixed liquid level detection component 60 enables the system to perform automatic control according to the actual liquid level state of the mixing storage and transportation device 40, eliminating the need for manual frequent monitoring and intervention in the dosing process, improving the operating efficiency of the system, and reducing the workload and errors of manual operation.

[0060] In an embodiment of the present invention, referring to Figure 1 As shown, the transmission component includes: a wastewater lift pump 101, a clear water lift pump 102, and a homogenizing agent delivery pump 103. The wastewater lift pump 101 is provided in the wastewater storage and transportation device 10, and the wastewater lift pump 101 is used to dose or stop dosing wastewater into the mixing storage and transportation device 40 under the control of the main controller. The clear water lift pump 102 is provided in the clear water storage and transportation device 11, and the clear water lift pump 102 is used to dose or stop dosing clear water into the mixing storage and transportation device 40 by the main controller. The homogenizing agent delivery pump 103 is provided between the homogenizing agent storage and transportation device 12 and the mixing storage and transportation device 40, and the homogenizing agent delivery pump 103 is used to dose or stop dosing the homogenizing agent into the mixing storage and transportation device 40 under the control of the main controller.

[0061] The clear water lift pump 102, the wastewater lift pump 101, and the homogenizing agent delivery pump 103 can be, for example, centrifugal pumps, diaphragm pumps, and screw pumps, etc. By controlling the wastewater lift pump 101, the clear water lift pump 102, and the homogenizing agent delivery pump 103 respectively by the main controller, the running time of each pump can be flexibly controlled according to the actual production or treatment requirements, so as to accurately allocate the mixed liquid and improve the treatment effect.

[0062] In an embodiment of the present invention, referring to Figure 1As shown in the figure, the dosing amount detection device 20 includes: a wastewater flow detection device 201, a clear water flow detection device 202, and a homogenizing agent flow detection device 203. The wastewater flow detection device 201 is arranged between the wastewater storage and transportation device 10 and the mixing storage and transportation device 40, and the wastewater flow detection device 201 is used to measure the dosing amount of wastewater added to the mixing storage and transportation device 40. The clear water flow detection device 202 is arranged between the clear water storage and transportation device 11 and the mixing storage and transportation device 40, and the clear water flow detection device 202 is used to measure the dosing amount of clear water added to the mixing storage and transportation device 40. The homogenizing agent flow detection device 203 is arranged between the homogenizing agent storage and transportation device 12 and the mixing storage and transportation device 40, and the homogenizing agent flow detection device 203 is used to measure the dosing amount of the homogenizing agent added to the mixing storage and transportation device 40.

[0063] The wastewater flow detection device 201 can be arranged, for example, on the wastewater delivery pipe 104, the clear water flow detection device 202 can be arranged, for example, on the clear water delivery pipe 110, and the homogenizing agent flow detection device 203 can be arranged, for example, on the homogenizing agent delivery pipe 120. The wastewater flow detection device 201, the clear water flow detection device 202, and the homogenizing agent flow detection device 203 can, for example, select electromagnetic flowmeters, measure the flow rate by detecting the electromotive force generated when the liquid passes through the magnetic field, and then obtain the flow rate, that is, the dosing amount of the liquid. The flow detection device can transmit the measurement data to the main controller in real time. The main controller compares and analyzes the calculated target dosing amount with the actually detected flow data, and then precisely controls the operation of each lift pump to achieve automatic dosing control. Secondly, it can timely detect abnormal flow conditions, such as sudden changes or abnormal fluctuations in flow rate caused by pipeline blockage, pump failure, etc. It ensures that wastewater, clear water, and the homogenizing agent are mixed according to the target dosing amount, avoids deviation in the mixing ratio caused by inaccurate flow rate, and thus ensures the stable performance of concrete during subsequent use.

[0064] In an embodiment of the present invention, referring to Figure 1 As shown in the figure, the concrete cleaning wastewater recycling and treatment system 1 further includes a wastewater liquid level detection component 61, which is arranged in the wastewater tank to detect the wastewater liquid level value. When the liquid level value of the wastewater is lower than the preset liquid level value, the main controller controls the transmission component to stop dosing. When the wastewater liquid level value is lower than the preset value, the main controller controls the transmission component to stop dosing, which can avoid the transmission component from continuing to work without sufficient wastewater, extend the service life of the equipment, reduce the maintenance cost and the equipment replacement frequency. Secondly, it ensures that the wastewater liquid level is within a suitable range for the preparation of the mixed liquid, and avoids waste of clear water and the homogenizing agent due to insufficient wastewater. It ensures that there is enough dosing amount of wastewater, clear water, and the homogenizing agent during the preparation process, thereby improving the wastewater treatment effect and making the treated mixed liquid accurately meet the solid content standard for recycling. Automatically adjusting the dosing operation according to the actual situation of the wastewater liquid level reduces manual intervention and improves work efficiency.

[0065] In an embodiment of the present invention, referring toFigure 1 As shown, the mixed liquid level detection component 60 is arranged in the mixing storage and transportation device 40 to detect the mixed liquid level value. When the mixed liquid level value is higher than or equal to the preset mixed liquid level value, the main controller controls the transmission component to stop dosing. When it is detected that the mixed liquid level reaches or exceeds the preset liquid level value, the main controller controls the transmission component to stop dosing, which can ensure that the mixed liquid always remains within the range that the device can accommodate, avoiding the situation of equipment damage or material waste caused by the overflow of the mixed liquid.

[0066] In an embodiment of the present invention, referring to Figure 1 As shown, the concrete cleaning wastewater recycling and treatment system 1 further includes a mixed solid content detection component 31 arranged in the mixing storage and transportation device 40 for detecting the solid content of the mixed liquid in the mixing storage and transportation device 40.

[0067] When the solid content of the mixed liquid is greater than the preset solid content, the main controller is used to determine the third dosing amount of clear water according to the current solid content of the mixed liquid and the preset solid content, and the main controller controls the transmission component to dose clear water into the mixing storage and transportation device 40 until the third dosing amount is reached.

[0068] When the mixed solid content detection component 31 detects that the solid content of the mixed liquid is greater than the preset solid content of the mixed liquid, the main controller calculates the third dosing amount of clear water according to the current solid content of the mixed liquid, the preset solid content of the mixed liquid, and the water consumption per cubic meter of concrete. The main controller controls the clear water lift pump 102 to transport clear water to the mixing storage and transportation device 40. When the dosing amount detection device 20 detects that the dosing amount of clear water is equal to the third dosing amount, the main controller stops the transportation of the clear water lift pump 102. Thereafter, the solid content of the current mixed liquid is detected again by the mixed solid content detection component 31. If the solid content of the current mixed liquid is less than or equal to the preset solid content of the mixed liquid, the mixing of the mixed liquid is completed. Otherwise, the above operations are continued, and no more details are described here.

[0069] It should be noted that when the solid content of the mixed liquid is greater than the preset solid content of the mixed liquid, first consider the situation that the wastewater solid content detection component 30 is damaged or the main controller has a calculation error. The mixed solid content detection component 31 is set to detect whether the solid content of the mixed liquid automatically prepared by the system meets the preset solid content of the mixed liquid, and automatically take remedial measures in time when an error occurs to ensure that the automatically prepared mixed liquid meets the recycling standard.

[0070] In some embodiments, referring to Figure 2As shown, the concrete cleaning wastewater recycling and treatment system 1 further includes a finished product storage and transportation component 70, and the liquid inlet end of the finished product storage and transportation component 70 is connected to the liquid outlet end of the mixing storage and transportation device 40. The finished product storage and transportation component 70 provides a storage function for the mixed liquid prepared to meet the production standard, enabling the mixing storage and transportation device 40 to prepare the mixed liquid while the finished product storage and transportation component 70 is put into use in the mixing plant, avoiding the influence of factors such as frequent conveying operations and flow fluctuations of the mixing storage and transportation device 40 on the solid content of the mixed liquid.

[0071] In some embodiments, the concrete cleaning wastewater recycling and treatment system 1 further includes a valve 204 provided on the homogenizing agent conveying pipe 120 and located at the front end of the homogenizing agent conveying pump 103. Exemplarily, the valve 204 can be an electric control or manual control valve 204 composed of, for example, a butterfly valve, a gate valve, etc. The valve 204 is used to control the conveying of the homogenizing agent in the homogenizing agent storage and transportation device 12 to prevent the automatic outflow of the homogenizing agent and cause waste.

[0072] The concrete cleaning wastewater recycling and treatment system 1 further includes a plurality of one-way check valves 205, and the plurality of one-way check valves 205 are respectively provided on the wastewater conveying pipe 104, the clean water conveying pipe 110, and the homogenizing agent conveying pipe 120 and are close to the mixing storage and transportation device 40. Specifically, the plurality of one-way check valves 205 are respectively provided on the wastewater conveying pipe 104 close to the homogenizing device 50, the clean water conveying pipe 110 close to the homogenizing device 50, and the homogenizing agent conveying pipe 120 close to the homogenizing device 50.

[0073] The one-way check valve 205 can limit the flow of wastewater, clean water, and homogenizing agent only in the direction of flowing into the homogenizing device 50, avoiding the backflow of the mixed liquid in the homogenizing device 50 into the wastewater storage and transportation device 10, the clean water storage and transportation device 11, or the homogenizing agent storage and transportation device 12 to contaminate the wastewater, clean water, or homogenizing agent. Secondly, it reduces the occurrence of pipeline blockage and other situations caused by the backflow of the mixed liquid.

[0074] In summary, the use of the concrete cleaning wastewater recycling and treatment system 1 is as follows: The wastewater from the cleaning of concrete mixer trucks and the like enters the wastewater storage and transportation device 10 after being separated by the sand and gravel separator, and the mixer 51 in the wastewater storage and transportation device 10 stirs. When the mixed liquid level detection component 60 detects that the liquid level in the mixed storage and transportation device 40 is lower than the preset liquid level, the main controller controls the relevant components or devices to work according to the preset program. The wastewater solid content detection component 30 detects the solid content of the wastewater and sends it to the main controller. The main controller automatically calculates the target dosage of the wastewater, the target dosage of the clean water, and the target dosage of the homogenizing agent according to the detected current wastewater solid content, the preset solid content of the mixed liquid, and the water consumption per cubic meter of concrete. Among them, the first dosage of the clean water and the second dosage of the clean water are calculated according to the volume of the homogenizing device 50 and the target dosage of the clean water. The main controller starts the first-stage dosing, starts the wastewater lift pump 101, the clean water lift pump 102, and the homogenizing agent delivery pump 103 to simultaneously dose the wastewater, the clean water, and the homogenizing agent into the mixed storage and transportation device 40. When the wastewater flow detection device 201, the clean water flow detection device 202, and the homogenizing agent flow detection device 203 detect that the dosage of the wastewater is equal to the target dosage, the dosage of the homogenizing agent is equal to the target dosage, and the dosage of the clean water is equal to the first dosage, the main controller stops the dosing of the wastewater lift pump 101 and the homogenizing agent delivery pump 103. At this time, the main controller starts the second-stage dosing of the clean water, and continues to dose the clean water until the clean water flow detection device 202 detects that the total dosage of the clean water dosed into the mixed storage and transportation device 40 reaches the target dosage of the clean water, that is, the dosage of the clean water dosed in the second stage is equal to the second dosage, and the main controller stops the clean water lift pump 102 from continuing to dose, and completes the preparation of the mixed liquid. It should be noted that this system can also be switched to the manual mode, and the main controller will not automatically prepare the mixed liquid in the manual mode.

[0075] It can be understood that the foregoing embodiments are only illustrative descriptions of the present invention. On the premise that the technical features do not conflict, the structures do not contradict, and the invention purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A concrete cleaning wastewater recycling and treatment system, characterized in that, Including: A wastewater storage and transportation device, a clean water storage and transportation device, a mixed storage and transportation device, a transmission component, a dosing amount detection device, a wastewater solid content detection component, and a main controller; the transmission component includes a homogenizing device, and the wastewater storage and transportation device and the clean water storage and transportation device are respectively connected to the mixed storage and transportation device through the homogenizing device, and the dosing amount detection device, the transmission component, and the wastewater solid content detection component are all electrically connected to the main controller; The main controller is used to determine the target dosing amount of the wastewater and the target dosing amount of the clean water according to the detection data of the wastewater solid content detection component. At the same time, the main controller is used to determine the first dosing amount and the second dosing amount of the clean water according to the volume of the homogenizing device and the target dosing amount of the clean water; The main controller includes a first-stage and a second-stage control. In the first stage, the main controller controls the transmission component to dose the wastewater and the clean water until the dosing amount detection device detects that the dosing amount of the wastewater is equal to the target dosing amount and the dosing amount of the clean water is equal to the first dosing amount. In the second stage, the main controller controls the transmission component to continue dosing the clean water until the dosing amount detection device detects that the dosing amount of the clean water is equal to the second dosing amount.

2. The concrete cleaning wastewater recycling and treatment system according to claim 1, characterized in that It further includes a homogenizing agent storage and transportation device, and the homogenizing agent storage and transportation device is connected to the mixed storage and transportation device through the transmission component for dosing a homogenizing agent into the mixed storage and transportation device.

3. The concrete cleaning wastewater recycling and treatment system according to claim 2, wherein The main controller is used to determine the target dosing amount of the homogenizing agent according to the detection data of the wastewater solid content detection component. The main controller controls the transmission component to dose the homogenizing agent simultaneously with the clean water and the wastewater in the first stage until the dosing amount detection device detects that the dosing amount of the homogenizing agent is equal to the target dosing amount.

4. The concrete cleaning wastewater recycling and treatment system according to claim 3, wherein The homogenizing agent storage and transportation device is connected to the mixed storage and transportation device through the homogenizing device.

5. The concrete cleaning wastewater recycling and treatment system according to claim 1, wherein It further includes a mixed liquid level detection component. When the main controller detects that the liquid level in the mixed storage and transportation device is lower than the first liquid level according to the mixed liquid level detection component, the main controller enters the first stage.

6. The concrete cleaning wastewater recycling and treatment system according to claim 1, wherein It further includes a wastewater liquid level detection component, which is arranged in the wastewater tank to detect the wastewater liquid level value. When the liquid level value of the wastewater is lower than the preset liquid level value, the main controller controls the transmission component to stop dosing.

7. The concrete cleaning wastewater recycling and treatment system according to claim 1, wherein, The mixed liquid level detection component is arranged in the mixed storage and transportation device to detect the mixed liquid level value. When the mixed liquid level value is higher than or equal to the preset mixed liquid level value, the main controller controls the transmission component to stop dosing.

8. The concrete cleaning wastewater recycling and treatment system according to claim 1, characterized in that, It further includes a mixed solid content detection component arranged in the mixed storage and transportation device for detecting the solid content of the mixed liquid in the mixed storage and transportation device; When the solid content is greater than the preset solid content, the main controller is used to determine the third dosing amount of the clean water according to the current solid content and the preset solid content, and the main controller controls the transmission component to dose the clean water into the mixed storage and transportation device until the third dosing amount is reached.

9. A control method for a concrete cleaning wastewater recycling and treatment system, characterized in that, Applying the concrete cleaning wastewater recovery and treatment system according to any one of claims 1 to 8, including: The main controller determines the target dosing amount of the wastewater and the target dosing amount of the fresh water according to the solid content of the wastewater in the wastewater storage and transportation device detected by the wastewater solid content detection component. Among them, the main controller determines the first dosing amount and the second dosing amount of the fresh water according to the volume of the homogenization device and the target dosing amount of the fresh water; The main controller includes a first stage and a second stage to control the transfer component to dose the wastewater and the fresh water into the mixing storage and transportation device. The main controller controls the transfer component to start the first stage of dosing, dosing the wastewater and the fresh water into the mixing storage and transportation device until the dosing amount detection device detects that the dosing amount of the wastewater is equal to the target dosing amount and the dosing amount of the fresh water is equal to the first dosing amount, the main controller controls the transfer component to stop dosing the wastewater; The main controller controls the transfer component to start the second stage of dosing, continue to dose the fresh water into the mixing storage and transportation device until the dosing amount detection device detects that the dosing amount of the fresh water is equal to the second dosing amount, and the main controller controls the transfer component to stop dosing.

10. The control method of the concrete cleaning wastewater recycling and treatment system according to claim 9, characterized in that, The specific steps for the main controller to determine the target dosing amount of the wastewater, the target dosing amount of the fresh water, and the first dosing amount and the second dosing amount of the fresh water are as follows: The main controller determines the target dosing amount of the wastewater and the target dosing amount of the fresh water according to the solid content of the wastewater in the wastewater storage and transportation device detected by the wastewater solid content detection component, the preset mixed solid content, and the preset mixed volume. Among them, the second dosing amount of the fresh water is determined according to the volume of the homogenization device, and the first dosing amount of the fresh water is determined by deducting the second dosing amount of the fresh water from the target dosing amount of the fresh water.

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