Intelligent treatment system for wire drawing waste liquid

Abstract

The invention relates to the technical field of wire drawing waste liquid treatment, in particular to an intelligent wire drawing waste liquid treatment system which comprises a waste liquid basic treatment module, a decomposition module, a filtering module and a control module. The processor is used for determining the depth of the flat plate ceramic membrane group according to the concentration of the particulate matters in the reclaimed water and the liquid level drop rate of the membrane biological reaction tank, and determining the conveying flow of the reclaimed water according to the concentration of the particulate matters in the reclaimed water and the conveying pressure of the reclaimed water; and determining the rotation frequency of the magnetic sleeve according to the standard deviation of the concentration of the particulate matters in the reclaimed water and the concentration of the particulate matters in the flat plate ceramic membrane group. The waste acid recovery rate and the metal ion recovery rate are improved, and the quality of wire drawing waste liquid treatment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire drawing waste liquid treatment, and particularly to an intelligent wire drawing waste liquid treatment system. Background Art

[0002] A large amount of wastewater is generated during the production process in the wire drawing industry, mainly including the following types: pickling wastewater: containing high concentrations of acids (such as hydrochloric acid, sulfuric acid), heavy metal ions ( , ), and oxide scale residues; phosphating wastewater: containing phosphates, heavy metal ions such as zinc / manganese / nickel, and surfactants. The existing treatment systems have insufficient removal rates for organic pollutants and are difficult to meet the discharge standards.

[0003] Chinese Patent Publication No. CN214528603U discloses a wire drawing waste liquid treatment system. A wire drawing waste liquid treatment system includes a waste liquid collection tank, a degreasing reactor, a sludge thickening and dewatering device, a copper removal reactor, a plate and frame filter press, and a biological treatment device connected in sequence through pipelines. The biochemical treatment device includes an anaerobic tank, an aerobic tank, and an MBR membrane bioreactor in sequence from the starting end of the treatment; the treatment system further includes a plurality of storage tanks; the storage tanks include a demulsifier storage tank, a polyaluminum chloride storage tank, a sodium sulfide storage tank, a sulfuric acid storage tank, a hydrogen peroxide storage tank, a ferrous sulfate storage tank, a plurality of liquid alkali storage tanks, and a plurality of polyacrylamide (PAM) storage tanks. It can be seen that this invention has problems such as damage to the flat ceramic membrane module caused by some iron wire components in the wire drawing waste liquid and a decrease in the accuracy of wire drawing waste liquid treatment due to incomplete removal of some macromolecular particles or corrosive components in the wire drawing waste liquid. Summary of the Invention

[0004] Therefore, the present invention provides an intelligent wire drawing waste liquid treatment system to overcome the problems in the prior art, such as damage to the flat ceramic membrane module caused by some iron wire components in the wire drawing waste liquid and a decrease in the accuracy of wire drawing waste liquid treatment due to incomplete removal of some macromolecular particles or corrosive components in the wire drawing waste liquid.

[0005] To achieve the above object, the present invention provides an intelligent wire drawing waste liquid treatment system, including: A waste liquid basic treatment module, including a pickling waste liquid treatment component for recovering free acid and removing heavy metal ions from pickling wire drawing waste liquid to output pickling-treated waste liquid, and a phosphating waste liquid treatment component for dephosphorizing and removing heavy metal ions from phosphating wire drawing waste liquid to output phosphating-treated waste liquid; A decomposition module, connected to the waste liquid basic treatment module, for decomposing the organic matter in the pickling-treated waste liquid and the phosphating-treated waste liquid to output decomposed wire drawing waste liquid, including an anaerobic tank; A filtration module, which is connected to the decomposition module and is used to filter impurities in the decomposed wire-drawing waste liquid. It includes a membrane bioreactor connected to the anaerobic pond for filtering the decomposed wire-drawing waste liquid to output intermediate water, and a flow regulation component connected to the membrane bioreactor for regulating the flow rate of the intermediate water transportation. Among them, the membrane bioreactor includes a flat ceramic membrane group for filtering the decomposed wire-drawing waste liquid, an electric telescopic rod for adjusting the depth of the flat ceramic membrane group, and a magnetic absorption sleeve partially sleeved on the flat ceramic membrane group for adsorbing metal impurities in the decomposed wire-drawing waste liquid; A control module, which is respectively connected to the decomposition module and the filtration module, and is used to determine the depth of the flat ceramic membrane group according to the concentration of particulate matter in the intermediate water and the liquid level drop rate of the membrane bioreactor, determine the transportation flow rate of the intermediate water according to the concentration of particulate matter in the intermediate water and the transportation pressure of the intermediate water, and determine the rotation frequency of the magnetic absorption sleeve according to the concentration of particulate matter in the intermediate water and the standard deviation of the concentration of particulate matter in the intermediate water in the flat ceramic membrane group.

[0006] Further, the decomposition module further includes: A first water pump, which is arranged on the inner wall of the membrane bioreactor close to the anaerobic pond and is used to provide the transportation power of the decomposed wire-drawing waste liquid; A first transportation pipeline, which is connected to the first water pump and is used to transport the decomposed wire-drawing waste liquid to the anaerobic pond; A balance port, which is connected to the anaerobic pond and provides a channel for the anaerobic pond and the membrane bioreactor to interact with each other to make the liquid levels of the anaerobic pond and the membrane bioreactor equal.

[0007] Further, the filtration module further includes: A blower, which is arranged below the flat ceramic membrane group and is used to adjust the turbulent flow speed of the wire-drawing waste liquid on the outer surface of the flat ceramic membrane group; A rotating rod, which is connected to the magnetic absorption sleeve and is used to transmit a horizontal rotational torque to the magnetic absorption sleeve; A rotating motor, which is connected to the rotating rod and is used to provide the horizontal rotation power of the rotating rod; A second water pump, which is arranged on the inner wall of the membrane bioreactor far from the anaerobic pond and is used to provide the transportation power of the sludge; A third transportation pipeline, which is connected to the second water pump and is used to transport the sludge to the sludge pond.

[0008] Further, the flow regulation component includes: A second transportation pipeline, which is connected to the flat ceramic membrane group and is used to transport the intermediate water to the intermediate water pond; A self-priming pump, which is connected to the second transportation pipeline and is used to provide the transportation power of the intermediate water.

[0009] Furthermore, it further includes a storage module connected to the filtering module, which includes: A sludge pool, which is connected to the third conveying pipeline for storing sludge; An intermediate water pool, which is connected to the second conveying pipeline for storing intermediate water; A turbidity sensor, which is connected to the intermediate water pool for detecting the concentration of particulate matter in the intermediate water.

[0010] Furthermore, the control module is respectively connected to the turbidity sensor and the electric telescopic rod to obtain the concentration of particulate matter in the intermediate water output from the membrane bioreactor. If the concentration of particulate matter in the intermediate water is greater than a preset first concentration, it is determined that the accuracy of the wire drawing waste liquid treatment does not meet the requirements. Among them, if the concentration of particulate matter in the intermediate water output from the membrane bioreactor is greater than a preset third concentration, the depth of the flat ceramic membrane module in the membrane bioreactor is reduced; When the depth adjustment of the flat ceramic membrane module is completed, if the liquid level drop rate of the membrane bioreactor is less than a preset liquid level drop rate, it is determined that the permeation efficiency of the flat ceramic membrane module does not meet the requirements, and the depth of the flat ceramic membrane module in the membrane bioreactor is increased.

[0011] Furthermore, the control module is respectively connected to the turbidity sensor and the self-priming pump to preliminarily determine that the pipeline loss degree does not meet the requirements according to the concentration of particulate matter in the intermediate water output from the membrane bioreactor being greater than a preset second concentration and less than or equal to a preset third concentration, and perform a secondary determination on the pipeline loss degree according to the pressure inside the second conveying pipeline. If the pressure inside the second conveying pipeline is greater than a preset pressure, it is secondarily determined that the pipeline loss degree does not meet the requirements, and the maximum conveying flow rate of the second conveying pipeline is reduced.

[0012] Furthermore, the control module is connected to the turbidity sensor and the magnetic absorption sleeve to preliminarily determine that the damage degree of the flat ceramic membrane module does not meet the requirements according to the concentration of particulate matter in the intermediate water output from the membrane bioreactor being greater than a preset first concentration and less than or equal to a preset second concentration, and perform a secondary determination on the damage degree of the flat ceramic membrane module according to the standard deviation of the concentration of particulate matter in the intermediate water in the flat ceramic membrane module. If the standard deviation of the concentration of particulate matter in the intermediate water in the flat ceramic membrane module is greater than a preset standard deviation, it is secondarily determined that the damage degree of the flat ceramic membrane module does not meet the requirements, and the rotation frequency of the magnetic absorption sleeve is increased. Among them, the preset first concentration is less than the preset second concentration, and the preset second concentration is less than the preset third concentration.

[0013] Further, the reduction amplitude of the depth of the flat ceramic membrane module in the membrane bioreactor is determined by the difference between the concentration of particulate matter in the reclaimed water and a preset concentration.

[0014] Further, the decomposed wire drawing waste liquid is the pickling treatment waste liquid and the phosphating treatment waste liquid after the organic matter is decomposed by anaerobic bacteria in the anaerobic tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows. By setting up a waste liquid basic treatment module, a decomposition module, a filtration module, a storage module and a control module, and by setting anaerobic bacteria and a flat ceramic membrane module to treat and filter the pickling treatment waste liquid and the phosphating treatment waste liquid, the problem that bacteria and viruses in the decomposed wire drawing waste liquid cannot be converted into small molecule substances is overcome, and the pollution load of the wire drawing waste liquid is reduced; by monitoring the concentration of particulate matter in the reclaimed water, the problem that it is impossible to determine the treatment accuracy of the decomposed wire drawing waste liquid and the filtration accuracy of the flat ceramic membrane module is overcome, and the treatment efficiency of the wire drawing waste liquid is improved; by setting a magnetic adsorption sleeve to adsorb iron impurities in the decomposed wire drawing waste liquid, the problem that metal substances in the decomposed wire drawing waste liquid damage the flat ceramic membrane module is overcome, the service life of the flat ceramic membrane module is prolonged, the environmental pollution caused by the wire drawing waste liquid is reduced, and the ecological balance and the sustainable utilization of water resources are protected.

[0016] Further, the present invention reduces the depth of the flat ceramic membrane module in the membrane bioreactor by virtue of the concentration of particulate matter in the reclaimed water being greater than a preset third concentration, thereby overcoming the problem that due to the too fast flow rate of the decomposed wire drawing waste liquid, the flat ceramic membrane module is extruded by macromolecular particles in a part of the decomposed wire drawing waste liquid and partially enters the membrane, resulting in a change in the liquid composition in the membrane, and thus the separation accuracy of the flat ceramic membrane module does not meet the requirements. By detecting the concentration of particulate matter in the water, the depth of the flat ceramic membrane module is reduced, and the environmental risks and potential hazards caused by unqualified treatment are reduced.

[0017] Further, the present invention determines that the permeation efficiency of the flat ceramic membrane module does not meet the requirements and increases the depth of the flat ceramic membrane module in the membrane bioreactor by virtue of the liquid level drop rate of the membrane bioreactor being less than a preset liquid level drop rate, thereby overcoming the problem that when the water level in the membrane bioreactor is relatively low, the pressure of water on the flat ceramic membrane module is insufficient, resulting in low permeation efficiency of the flat ceramic membrane module and the liquid level drop rate in the membrane bioreactor not meeting the requirements. Increasing the depth of the flat ceramic membrane module in the membrane bioreactor can increase the pressure of the decomposed wire drawing waste liquid on the surface of the flat ceramic membrane module, thereby achieving that the permeation efficiency of the flat ceramic membrane module meets the requirements and improving the treatment quality of the wire drawing waste liquid.

[0018] Furthermore, the present invention preliminarily determines whether the loss degree of the pipeline meets the requirements according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor, and secondly determines the loss degree of the pipeline by comparing the pressure inside the second conveying pipeline with the preset pressure. If the loss degree of the pipeline does not meet the requirements, the maximum conveying flow rate of the second conveying pipeline is reduced, overcoming the problem that the inner wall of the pipeline is damaged due to incomplete removal of some macromolecular particulate matter or corrosive components in the decomposed wire-drawing waste liquid, resulting in the mixing of the components of the inner wall of the pipeline into the reclaimed water and the inaccuracy of reclaimed water treatment. When the loss degree of the pipeline does not meet the requirements, the maximum conveying flow rate of the reclaimed water in the pipeline is reduced, realizing the protection of the conveying pipeline.

[0019] Furthermore, the present invention preliminarily determines whether the damage degree of the flat ceramic membrane module meets the requirements according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor, and secondly determines the damage degree of the flat ceramic membrane module by comparing the standard deviation of the concentration of particulate matter in the reclaimed water in the flat ceramic membrane module with the preset standard deviation. If the damage degree does not meet the requirements, the rotation frequency of the magnetic adsorption sleeve is increased, overcoming the problem that the decomposed wire-drawing waste liquid takes away some iron wire components on the grid structure when passing through the grid, thus scratching the flat ceramic membrane module, and further resulting in uneven particle distribution in the reclaimed water filtered by the flat ceramic membrane module. By increasing the rotation frequency of the magnetic adsorption sleeve, the adsorption efficiency of the magnetic adsorption sleeve for iron wire is increased, realizing the improvement of the filtration accuracy of the flat ceramic membrane module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural block diagram of the wire-drawing waste liquid intelligent treatment system according to the embodiment of the present invention; Figure 2 is the structural diagram of the decomposition module, filtration module and storage module of the wire-drawing waste liquid intelligent treatment system according to the embodiment of the present invention; Figure 3 is the structural block diagram of the waste liquid basic treatment module of the wire-drawing waste liquid intelligent treatment system according to the embodiment of the present invention; Figure 4 is the structural block diagram of the storage module of the wire-drawing waste liquid intelligent treatment system according to the embodiment of the present invention; The reference numerals are as follows: 1 - second conveying pipeline, 2 - self-priming pump, 3 - electric telescopic rod, 4 - blower, 5 - first conveying pipeline, 6 - anaerobic tank, 7 - balance port, 8 - first water pump, 9 - membrane bioreactor, 10 - rotating motor, 11 - rotating rod, 12 - magnetic adsorption sleeve, 13 - second water pump, 14 - sludge tank, 15 - third conveying pipeline, 16 - reclaimed water tank, 17 - turbidity sensor, 18 - flat ceramic membrane module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives and advantages of the present invention more clear and understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0023] Those skilled in the art can understand that unless specifically stated, the singular forms "a", "an", and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in this specification means the presence of features, integers, steps, operations, elements / components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements / components. It should be understood that when we say that a module is "connected" or "coupled" to another module, it can be directly connected or coupled to other modules, or there may also be intermediate units. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 as shown, which are respectively the overall structure block diagram of the intelligent treatment system for drawing waste liquid in the embodiment of the present invention, the structure diagrams of the decomposition module, the filtration module, and the storage module, the structure block diagram of the waste liquid basic treatment module, and the structure block diagram of the storage module.

[0025] An intelligent treatment system for drawing waste liquid in an embodiment of the present invention includes: A waste liquid basic treatment module, including a pickling waste liquid treatment component for recovering free acid and removing heavy metal ions from pickling drawing waste liquid to output pickling-treated waste liquid, and a phosphating waste liquid treatment component for dephosphorizing and removing heavy metal ions from phosphating drawing waste liquid to output phosphating-treated waste liquid; Specifically, the pickling waste liquid treatment component includes: A diffusion dialyzer for recovering free acid from pickling drawing waste liquid and outputting free acid and acid-removed drawing waste liquid; A liquid storage tank connected to the diffusion dialyzer for storing the free acid; An oxidation reaction tank connected to the diffusion dialyzer for adding an oxidant to the acid-removed drawing waste liquid to convert it into ; A neutralization sedimentation tank connected to the oxidation reaction tank for adjusting the pH value, generating precipitation, and synchronously removing heavy metals; The first solid-liquid separation device, which is connected to the neutralization sedimentation tank, is used to filter the precipitate to output pickling treatment waste liquid.

[0026] Specifically, the phosphating waste liquid treatment component includes: A reaction tank, which is used to add calcium salt to the phosphating wire-drawing waste liquid to generate hydroxyapatite precipitate; A chelation reaction tank, which is connected to the reaction tank and is used to add a chelating agent to make the chelating agent fully react with heavy metal ions and generate chelate precipitate; The second solid-liquid separation device, which is connected to the chelation reaction tank, is used to filter the hydroxyapatite precipitate and chelate precipitate to output phosphating treatment waste liquid.

[0027] In implementation, the optional types of the first solid-liquid separation device and the second solid-liquid separation device are plate-and-frame filter presses or belt filter presses.

[0028] A decomposition module, which is connected to the waste liquid basic treatment module and is used to decompose the organic matter in the pickling treatment waste liquid and the phosphating treatment waste liquid to output decomposed wire-drawing waste liquid, including an anaerobic tank 6; A filtration module, which is connected to the decomposition module and is used to filter the impurities in the decomposed wire-drawing waste liquid, including a membrane bioreactor 9 connected to the anaerobic tank 6 to filter the decomposed wire-drawing waste liquid to output reclaimed water and a flow regulation component connected to the membrane bioreactor 9 to regulate the flow rate of the reclaimed water transportation. Among them, the membrane bioreactor 9 includes a flat ceramic membrane group 18 used to filter the decomposed wire-drawing waste liquid, an electric telescopic rod 3 used to adjust the depth of the flat ceramic membrane group 18, and a magnetic adsorption sleeve 12 partially sleeved on the flat ceramic membrane group 18 to adsorb metal impurities in the decomposed wire-drawing waste liquid; A control module, which is respectively connected to the decomposition module and the filtration module, is used to determine the depth of the flat ceramic membrane group 18 according to the concentration of particulate matter in the reclaimed water and the liquid level drop rate of the membrane bioreactor 9, determine the transportation flow rate of the reclaimed water according to the concentration of particulate matter in the reclaimed water and the transportation pressure of the reclaimed water, and determine the rotation frequency of the magnetic adsorption sleeve 12 according to the concentration of particulate matter in the reclaimed water and the standard deviation of the concentration of particulate matter in the reclaimed water in the flat ceramic membrane group 18.

[0029] Specifically, reclaimed water is the product output after the decomposed wire-drawing waste liquid is filtered by the flat ceramic membrane group 18. Reclaimed water has a specific meaning in the field of wire-drawing waste liquid treatment and is a conventional technology well-known to those skilled in the art. Therefore, the meaning of reclaimed water and the generation process of reclaimed water are not elaborated here.

[0030] In implementation, the present invention sets up a waste liquid basic treatment module, a decomposition module, a filtration module, a storage module and a control module. By setting anaerobic bacteria and a flat plate ceramic membrane group 18 to treat and filter the pickling treatment waste liquid and the phosphating treatment waste liquid, it overcomes the problem that bacteria and viruses in the wire drawing waste liquid cannot be converted into small molecule substances, and reduces the pollution load of the wire drawing waste liquid; by monitoring the concentration of particulate matter in the reclaimed water, it overcomes the problem that the accuracy of the wire drawing waste liquid treatment and the filtration accuracy of the flat plate ceramic membrane group 18 cannot be determined, and improves the treatment efficiency of the wire drawing waste liquid; by setting a magnetic adsorption sleeve 12 to adsorb iron impurities in the decomposed wire drawing waste liquid, it overcomes the problem that metal substances in the decomposed wire drawing waste liquid damage the flat plate ceramic membrane group 18, extends the service life of the flat plate ceramic membrane group 18, reduces the environmental pollution caused by the wire drawing waste liquid, and protects the ecological balance and the sustainable utilization of water resources.

[0031] In implementation, the waste liquid basic treatment module further includes a sludge treatment component, which is respectively connected to the pickling waste liquid treatment component and the phosphating waste liquid treatment component, and includes: A calcination furnace, which is connected to the first solid-liquid separation device and is used for calcining the sludge containing to obtain an iron-based water purifying agent; A granulator, which is connected to the second solid-liquid separation device and is used for granulating the sludge containing hydroxyapatite to obtain slow-release phosphate fertilizer.

[0032] Specifically, the decomposition module further includes: A first water pump 8, which is arranged on the inner wall of the membrane bioreactor 9 close to the anaerobic tank 6 and is used for providing the conveying power of the decomposed wire drawing waste liquid; A first conveying pipeline 5, which is connected to the first water pump 8 and is used for conveying the decomposed wire drawing waste liquid to the anaerobic tank 6; A balance port 7, which is connected to the anaerobic tank 6 and provides a channel for the anaerobic tank 6 and the membrane bioreactor 9 to interact with each other so that the liquid levels of the anaerobic tank 6 and the membrane bioreactor 9 are equal.

[0033] Specifically, the filtration module further includes: A blower 4, which is arranged below the flat plate ceramic membrane group 18 and is used for adjusting the turbulent flow velocity of the wire drawing waste liquid on the outer surface of the flat plate ceramic membrane group 18; A rotating rod 11, which is connected to the magnetic adsorption sleeve 12 and is used for transmitting a horizontal rotational torque to the magnetic adsorption sleeve 12; A rotating motor 10, which is connected to the rotating rod 11 and is used for providing the horizontal rotational power of the rotating rod 11; A second water pump 13, which is arranged on the inner wall of the membrane bioreactor 9 far from the anaerobic tank 6 and is used for providing the conveying power of the sludge; The third conveying pipeline 15 is connected to the second water pump 13 for conveying the sludge to the sludge pool 14.

[0034] Specifically, the flow rate regulating assembly includes: The second conveying pipeline 1 is connected to the flat ceramic membrane module 18 for conveying the reclaimed water to the reclaimed water pool 16; The self-priming pump 2 is connected to the second conveying pipeline 1 for providing the conveying power of the reclaimed water.

[0035] Specifically, it further includes a storage module connected to the filtration module, which includes: The sludge pool 14 is connected to the third conveying pipeline 15 for storing sludge; The reclaimed water pool 16 is connected to the second conveying pipeline 1 for storing reclaimed water; The turbidity sensor 17 is connected to the reclaimed water pool 16 for detecting the concentration of particulate matter in the reclaimed water.

[0036] Specifically, the control module is respectively connected to the turbidity sensor 17 and the electric telescopic rod 3 for obtaining the concentration of particulate matter in the reclaimed water output from the membrane bioreactor 9. If the concentration of particulate matter in the reclaimed water is greater than the preset first concentration, it is determined that the accuracy of the wire drawing waste liquid treatment does not meet the requirements. Among them, if the concentration of particulate matter in the reclaimed water output from the membrane bioreactor 9 is greater than the preset third concentration, the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is reduced; When the depth adjustment of the flat ceramic membrane module 18 is completed, if the liquid level drop rate of the membrane bioreactor 9 is less than the preset liquid level drop rate, it is determined that the permeation efficiency of the flat ceramic membrane module 18 does not meet the requirements, and the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is increased.

[0037] Specifically, the liquid level drop rate is the ratio of the height of the liquid level drop in the membrane bioreactor 9 to the drop time.

[0038] Optionally, the value range of the preset third concentration can be [390 mg / L, 500 mg / L]; Preferably, the preferred embodiment of the preset third concentration is 450 mg / L; In a specific embodiment, the concentration of particulate matter in the reclaimed water is 600 mg / L, which is greater than the preset third concentration. For every 50 mg / L increase in the particulate matter concentration beyond the preset concentration, the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is reduced by 1 cm compared to the current depth of the flat ceramic membrane module 18 in the membrane bioreactor 9. The current depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is 40 cm, and the reduced depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is 40 - (60 - 45) / 5 = 37 cm.

[0039] Optionally, the value range of the preset liquid level drop rate can be [5 cm / min, 7 cm / min]; Preferably, a preferred embodiment of the preset liquid level drop rate is 6 cm / min; In one or more specific embodiments, the liquid level drop rate of the membrane bioreactor 9 is 4 cm / min, which is less than the preset liquid level drop rate. For every 0.5 cm / min decrease in the liquid level drop rate of the membrane bioreactor 9 below the preset liquid level drop rate, the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is increased by 1.5 cm compared to the current depth of the flat ceramic membrane module 18 in the membrane bioreactor 9. The current depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is 40 cm, and the increased depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 is 40 + [(6 - 4) / 0.5]×1.5 cm = 46 cm.

[0040] In practice, the present invention reduces the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 according to the fact that the concentration of particulate matter in the reclaimed water is greater than the preset third concentration, thereby overcoming the problem that due to the too fast flow rate of the decomposed wire drawing waste liquid, the flat ceramic membrane module 18 is extruded by the macromolecular particles in part of the decomposed wire drawing waste liquid and partially enters the membrane, resulting in a change in the liquid composition inside the membrane, and thus the separation accuracy of the flat ceramic membrane module 18 does not meet the requirements. By detecting the concentration of particulate matter in the water and reducing the depth of the flat ceramic membrane module 18, the environmental risks and potential hazards caused by non-compliance treatment are reduced.

[0041] In implementation, the present invention determines that the permeation efficiency of the flat ceramic membrane module 18 does not meet the requirements when the liquid level drop rate of the membrane bioreactor 9 is less than the preset liquid level drop rate, and increases the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9, overcoming the insufficient pressure of water on the flat ceramic membrane module 18 caused by the low water level in the membrane bioreactor 9, thereby resulting in low permeation efficiency of the flat ceramic membrane module 18 and the problem that the liquid level drop rate in the membrane bioreactor 9 does not meet the requirements. Increasing the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 can increase the pressure of the decomposed wire-drawing waste liquid on the surface of the flat ceramic membrane module 18, so as to achieve that the permeation efficiency of the flat ceramic membrane module 18 meets the requirements and improve the quality of wire-drawing waste liquid treatment.

[0042] Specifically, the control module is respectively connected to the turbidity sensor 17 and the self-priming pump 2, and is used to initially determine that the loss degree of the pipeline does not meet the requirements according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor 9 being greater than the preset second concentration and less than or equal to the preset third concentration, and perform a secondary determination on the loss degree of the pipeline according to the pressure inside the second conveying pipeline 1. If the pressure inside the second conveying pipeline 1 is greater than the preset pressure, it is secondarily determined that the loss degree of the pipeline does not meet the requirements, and the maximum conveying flow rate of the second conveying pipeline 1 is reduced.

[0043] Optionally, the value range of the preset second concentration can be [250 mg / L, 390 mg / L], and the value range of the preset pressure can be [0.35 MPa, 0.55 MPa]; Preferably, the preferred embodiment of the preset second concentration is 320 mg / L, and the preferred embodiment of the preset pressure is 0.5 MPa; In a specific embodiment, the concentration of particulate matter in the reclaimed water is 400 mg / L, which is greater than the preset second concentration and less than the preset third concentration, and it is initially determined that the loss degree of the pipeline does not meet the requirements; the pressure inside the second conveying pipeline 1 is 0.7 MPa, which is greater than the preset pressure. For every 0.1 MPa increase in the pressure inside the second conveying pipeline 1 greater than the preset pressure, the maximum conveying flow rate of the second conveying pipeline 1 is reduced by 1 L / h compared to the current maximum conveying flow rate of the second conveying pipeline 1. The current maximum conveying flow rate of the second conveying pipeline 1 is 120 L / h, and the reduced maximum conveying flow rate of the second conveying pipeline 1 is 120 L / h - (0.7 - 0.5) / 0.1 × 1 L / h = 118 L / h.

[0044] In implementation, the present invention preliminarily determines whether the loss degree of the pipeline meets the requirements according to the concentration of particulate matter in the reclaimed water output by the membrane bioreactor 9, and secondly determines the loss degree of the pipeline by comparing the pressure inside the second conveying pipeline 1 with the preset pressure. For the loss degree of the pipeline that does not meet the requirements, the maximum conveying flow rate of the second conveying pipeline 1 is reduced, overcoming the damage to the inner wall of the pipeline caused by incomplete removal of some macromolecular particulate matter or corrosive components in the decomposed wire-drawing waste liquid, resulting in the problem that the precision of reclaimed water treatment does not meet the requirements due to the mixing of the components of the inner wall of the pipeline into the reclaimed water. When the loss degree of the pipeline does not meet the requirements, the maximum conveying flow rate of the reclaimed water in the pipeline is reduced, realizing the protection of the conveying pipeline.

[0045] Specifically, the control module is connected to the turbidity sensor 17 and the magnetic attraction sleeve 12, and is used to preliminarily determine that the damage degree of the flat ceramic membrane module 18 does not meet the requirements if the concentration of particulate matter in the reclaimed water output by the membrane bioreactor 9 is greater than the preset first concentration and less than or equal to the preset second concentration, and secondly determine the damage degree of the flat ceramic membrane module 18 according to the standard deviation of the concentration of particulate matter in the reclaimed water in the flat ceramic membrane module 18. If the standard deviation of the concentration of particulate matter in the reclaimed water in the flat ceramic membrane module 18 is greater than the preset standard deviation, it is secondly determined that the damage degree of the flat ceramic membrane module 18 does not meet the requirements, and the rotation frequency of the magnetic attraction sleeve 12 is increased. Wherein, the preset first concentration is less than the preset second concentration, and the preset second concentration is less than the preset third concentration.

[0046] Specifically, a number of sampling points are arranged at equal intervals in the reclaimed water in the flat ceramic membrane module 18, and the concentrations of the number of sampling points are detected and respectively recorded as , where n is a non-zero natural number. The calculation method of the standard deviation of the concentration of particulate matter in the reclaimed water is well-known to those skilled in the art, so the calculation process of the standard deviation of the concentration of particulate matter in the reclaimed water will not be elaborated here.

[0047] Optionally, the value range of the preset first concentration can be [130 mg / L, 250 mg / L]; the value range of the preset standard deviation can be [1 mg / L, 4 mg / L]; Preferably, the preferred embodiment of the preset first concentration is 190 mg / L, and the preferred embodiment of the preset standard deviation is 2 mg / L; In a specific embodiment, the concentration of particulate matter in the reclaimed water is 240 mg / L, which is greater than the preset first concentration and less than the preset second concentration. It is preliminarily determined that the damage degree of the flat plate ceramic membrane module 18 does not meet the requirements; the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane module 18 is 4 mg / L, which is greater than the preset standard deviation. For every 0.5 mg / L that the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane module 18 exceeds the preset standard deviation, the rotation speed of the rotary motor 10 increases by 40 r / min compared to the current rotation speed of the rotary motor 10. The current rotation speed of the rotary motor 10 is 1700 r / min, and the increased rotation speed of the rotary motor 10 is 1700 + [(4 - 2) / 0.5]×40 = 1860 r / min.

[0048] In implementation, the present invention preliminarily determines whether the damage degree of the flat plate ceramic membrane module 18 meets the requirements according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor 9, and makes a secondary determination of the damage degree of the flat plate ceramic membrane module 18 by comparing the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane module 18 with the preset standard deviation. For the damage degree that does not meet the requirements, the rotation frequency of the magnetic adsorption sleeve 12 is increased, overcoming the problem that part of the iron wire components on the grid structure are carried away when the decomposed wire drawing waste liquid passes through the grid, thereby scratching the flat plate ceramic membrane module 18, and further resulting in uneven particle distribution in the reclaimed water filtered by the flat plate ceramic membrane module 18. By increasing the rotation frequency of the magnetic adsorption sleeve 12, the adsorption efficiency of the magnetic adsorption sleeve 12 for iron wire is increased, realizing the improvement of the filtration accuracy of the flat plate ceramic membrane module 18.

[0049] Specifically, the reduction amplitude of the depth of the flat plate ceramic membrane module 18 in the membrane bioreactor 9 is determined by the difference between the concentration of particulate matter in the reclaimed water and the preset concentration.

[0050] Among them, the depth of the flat plate ceramic membrane module 18 is the height from the lower edge of the flat plate ceramic membrane module 18 to the bottom of the membrane bioreactor 9.

[0051] Specifically, the decomposed wire drawing waste liquid is the pickling treatment waste liquid and the phosphating treatment waste liquid after the organic matter is decomposed by anaerobic bacteria in the anaerobic tank 6.

[0052] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. An intelligent treatment system for wire drawing waste liquid, characterized in that, Comprising: A waste liquid basic treatment module, including a pickling waste liquid treatment component for recovering free acid and removing heavy metal ions from pickling and drawing waste liquid to output pickling-treated waste liquid, and a phosphating waste liquid treatment component for dephosphorizing and removing heavy metal ions from phosphating and drawing waste liquid to output phosphating-treated waste liquid; A decomposition module, connected to the waste liquid basic treatment module, for decomposing organic substances in the pickling-treated waste liquid and the phosphating-treated waste liquid to output decomposed drawing waste liquid, including an anaerobic pond; A filtration module, connected to the decomposition module, for filtering impurities in the decomposed drawing waste liquid, including a membrane bioreactor connected to the anaerobic pond for filtering the decomposed drawing waste liquid to output reclaimed water, and a flow rate adjustment component connected to the membrane bioreactor for adjusting the flow rate of reclaimed water transportation. Among them, the membrane bioreactor includes a flat ceramic membrane group for filtering the decomposed drawing waste liquid, an electric telescopic rod for adjusting the depth of the flat ceramic membrane group, and a magnetic adsorption sleeve partially sleeved on the flat ceramic membrane group for adsorbing metal impurities in the decomposed drawing waste liquid; A control module, respectively connected to the decomposition module and the filtration module, for determining the depth of the flat ceramic membrane group according to the concentration of particulate matter in the reclaimed water and the liquid level drop rate of the membrane bioreactor, determining the flow rate of reclaimed water transportation according to the concentration of particulate matter in the reclaimed water and the transportation pressure of the reclaimed water, and determining the rotation frequency of the magnetic adsorption sleeve according to the concentration of particulate matter in the reclaimed water and the standard deviation of the concentration of particulate matter in the reclaimed water in the flat ceramic membrane group.

2. The intelligent treatment system for wire drawing waste liquid according to claim 1, wherein The decomposition module further includes: A first water pump, arranged on the inner wall of the membrane bioreactor near the anaerobic pond, for providing the transportation power of the decomposed drawing waste liquid; A first transportation pipeline, connected to the first water pump, for transporting the decomposed drawing waste liquid to the anaerobic pond; A balance port, connected to the anaerobic pond, which provides a channel for material interaction between the anaerobic pond and the membrane bioreactor to make the liquid levels of the anaerobic pond and the membrane bioreactor equal.

3. The intelligent treatment system for wire drawing waste liquid according to claim 2, wherein, The filtration module further includes: A blower, arranged below the flat ceramic membrane group, for adjusting the turbulent flow velocity of the drawing waste liquid on the outer surface of the flat ceramic membrane group; A rotating rod, connected to the magnetic adsorption sleeve, for transmitting a horizontal rotational torque to the magnetic adsorption sleeve; A rotating motor, connected to the rotating rod, for providing the horizontal rotational power of the rotating rod; A second water pump, arranged on the inner wall of the membrane bioreactor far from the anaerobic pond, for providing the transportation power of the sludge; A third transportation pipeline, connected to the second water pump, for transporting the sludge to the sludge pond.

4. The intelligent treatment system for wire drawing waste liquid according to claim 3, wherein, The flow rate adjustment component includes: A second transportation pipeline, connected to the flat ceramic membrane group, for transporting reclaimed water to the reclaimed water pond; A self-priming pump, connected to the second transportation pipeline, for providing the transportation power of the reclaimed water.

5. The intelligent treatment system for wire drawing waste liquid according to claim 4, wherein It further includes a storage module connected to the filtration module, which includes: A sludge pond, connected to the third transportation pipeline, for storing sludge; A reclaimed water pond, connected to the second transportation pipeline, for storing reclaimed water; A turbidity sensor, which is connected to the intermediate water tank and used to detect the concentration of particulate matter in the intermediate water.

6. The intelligent treatment system for wire drawing waste liquid according to claim 5, wherein, The control module is respectively connected to the turbidity sensor and the electric telescopic rod, and is used to obtain the concentration of particulate matter in the intermediate water output by the membrane bioreactor. When the concentration of particulate matter in the intermediate water is greater than a preset first concentration, it is determined that the accuracy of the wire drawing waste liquid treatment does not meet the requirements. Among them, if the concentration of particulate matter in the intermediate water output by the membrane bioreactor is greater than a preset third concentration, the depth of the flat ceramic membrane module in the membrane bioreactor is reduced. When the depth adjustment of the flat ceramic membrane module is completed, if the liquid level drop rate of the membrane bioreactor is less than the preset liquid level drop rate, it is determined that the permeation efficiency of the flat ceramic membrane module does not meet the requirements, and the depth of the flat ceramic membrane module in the membrane bioreactor is increased.

7. The intelligent treatment system for wire drawing waste liquid according to claim 6, characterized in that, The control module is respectively connected to the turbidity sensor and the self-priming pump, and is used to initially determine that the loss degree of the pipeline does not meet the requirements according to the concentration of particulate matter in the intermediate water output by the membrane bioreactor being greater than a preset second concentration and less than or equal to a preset third concentration, and to perform a secondary determination of the loss degree of the pipeline according to the pressure inside the second conveying pipeline. If the pressure inside the second conveying pipeline is greater than the preset pressure, it is determined through secondary determination that the loss degree of the pipeline does not meet the requirements, and the maximum conveying flow rate of the second conveying pipeline is reduced.

8. The intelligent treatment system for wire drawing waste liquid according to claim 7, wherein, The control module is connected to the turbidity sensor and the magnetic absorption sleeve, and is used to initially determine that the damage degree of the flat ceramic membrane module does not meet the requirements according to the concentration of particulate matter in the intermediate water output by the membrane bioreactor being greater than a preset first concentration and less than or equal to a preset second concentration, and to perform a secondary determination of the damage degree of the flat ceramic membrane module according to the standard deviation of the concentration of particulate matter in the intermediate water in the flat ceramic membrane module. If the standard deviation of the concentration of particulate matter in the intermediate water in the flat ceramic membrane module is greater than the preset standard deviation, it is determined through secondary determination that the damage degree of the flat ceramic membrane module does not meet the requirements, and the rotation frequency of the magnetic absorption sleeve is increased. Among them, the preset first concentration is less than the preset second concentration, and the preset second concentration is less than the preset third concentration.

9. The intelligent treatment system for wire drawing waste liquid according to claim 8, wherein, The reduction amplitude of the depth of the flat ceramic membrane module in the membrane bioreactor is determined by the difference between the concentration of particulate matter in the intermediate water and the preset concentration.

10. The intelligent treatment system for wire drawing waste liquid according to claim 9, wherein, The decomposed wire drawing waste liquid is the pickling treatment waste liquid and the phosphating treatment waste liquid after the organic matter is decomposed by anaerobic bacteria in the anaerobic tank.

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