An intelligent treatment system for wire drawing waste liquid

Abstract

The present invention relates to the technical field of wire drawing waste liquid treatment, and particularly relates to an intelligent treatment system for wire drawing waste liquid, including: a waste liquid basic treatment module, a decomposition module, a filtration module, and a control module, which are respectively connected to the decomposition module and the filtration module, and are used to determine 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, determine the conveying flow rate of the reclaimed water according to the concentration of particulate matter in the reclaimed water and the conveying pressure of the reclaimed water, and determine the rotation frequency of the magnetic attraction 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. The present invention improves the recovery rates of waste acid and metal ions, and improves the quality of wire drawing waste liquid treatment.

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] During the production process of the wire drawing industry, a large amount of wastewater is generated, mainly including the following types: pickling wastewater: containing high-concentration 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 of 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 deoiling 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 also includes multiple 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, multiple liquid caustic soda storage tanks, and multiple polyacrylamide (PAM) storage tanks. It can be seen that this invention has problems such as damage to the flat ceramic membrane group 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 group 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:

[0006] 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;

[0007] 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;

[0008] A filtering 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 reclaimed water, and a flow regulating component connected to the membrane bioreactor for regulating the flow rate of the reclaimed water. 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;

[0009] A control module, which is respectively connected to the decomposition module and the filtering module, and is used to determine 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, determine the flow rate of the reclaimed water according to the concentration of particulate matter in the reclaimed water and the conveying pressure of the reclaimed water, and determine the rotation frequency of the magnetic absorption 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.

[0010] Furthermore, the decomposition module further includes:

[0011] 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 conveying power for the decomposed wire-drawing waste liquid;

[0012] A first conveying pipeline, which is connected to the first water pump and is used to convey the decomposed wire-drawing waste liquid to the anaerobic pond;

[0013] 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 so that the liquid levels of the anaerobic pond and the membrane bioreactor are equal.

[0014] Furthermore, the filtering module further includes:

[0015] A blower, which is arranged below the flat ceramic membrane group and is used to adjust the turbulent flow velocity of the wire-drawing waste liquid on the outer surface of the flat ceramic membrane group;

[0016] 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;

[0017] A rotating motor, which is connected to the rotating rod and is used to provide the horizontal rotational power of the rotating rod;

[0018] 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 conveying power for the sludge;

[0019] A third conveying pipeline, which is connected to the second water pump and is used to convey the sludge to the sludge pond.

[0020] Further, the flow rate regulating assembly includes:

[0021] A second conveying pipeline, which is connected to the flat ceramic membrane module and is used for conveying reclaimed water to the reclaimed water tank;

[0022] A self-priming pump, which is connected to the second conveying pipeline and is used for providing the conveying power of the reclaimed water.

[0023] Further, it further includes a storage module connected to the filtration module, and the storage module includes:

[0024] A sludge tank, which is connected to the third conveying pipeline and is used for storing sludge;

[0025] A reclaimed water tank, which is connected to the second conveying pipeline and is used for storing reclaimed water;

[0026] A turbidity sensor, which is connected to the reclaimed water tank and is used for detecting the concentration of particulate matters in the reclaimed water.

[0027] Further, the control module is respectively connected to the turbidity sensor and the electric telescopic rod, and is used for obtaining the concentration of particulate matters in the reclaimed water output by the membrane bioreactor. If the concentration of particulate matters in the reclaimed 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.

[0028] Wherein, if the concentration of particulate matters in the reclaimed 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;

[0029] 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.

[0030] Further, the control module is respectively connected to the turbidity sensor and the self-priming pump, and is used for initially determining that the pipeline loss degree does not meet the requirements according to the concentration of particulate matters in the reclaimed water output by the membrane bioreactor being greater than a preset second concentration and less than or equal to a preset third concentration, and performing a secondary determination on the pipeline loss degree according to the pressure inside the second conveying pipeline.

[0031] 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.

[0032] Further, the control module is connected to the turbidity sensor and the magnetic sleeve, and is configured to preliminarily determine that the damage degree of the flat ceramic membrane module does not meet the requirements if the concentration of particulate matter in the reclaimed water output from the membrane bioreactor is 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 reclaimed water in the flat ceramic membrane module.

[0033] If the standard deviation of the concentration of particulate matter in the reclaimed 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 sleeve is increased.

[0034] Wherein, the preset first concentration is less than the preset second concentration, and the preset second concentration is less than the preset third concentration.

[0035] 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 the preset concentration.

[0036] 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.

[0037] 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, the pickling treatment waste liquid and the phosphating treatment waste liquid are treated and filtered by setting anaerobic bacteria and a flat ceramic membrane module, overcoming the problem that bacteria and viruses in the decomposed wire drawing waste liquid cannot be converted into small molecule substances, and reducing the pollution load of the wire drawing waste liquid; by monitoring the concentration of particulate matter in the reclaimed water, overcoming the problem that it is impossible to determine the accuracy of the treatment of the decomposed wire drawing waste liquid and the filtration accuracy of the flat ceramic membrane module, and improving the treatment efficiency of the wire drawing waste liquid; by setting a magnetic sleeve to adsorb iron impurities in the decomposed wire drawing waste liquid, overcoming the problem that metal substances in the decomposed wire drawing waste liquid damage the flat ceramic membrane module, extending the service life of the flat ceramic membrane module, reducing the environmental pollution of the wire drawing waste liquid, and protecting the ecological balance and the sustainable utilization of water resources.

[0038] Further, the present invention reduces the depth of the flat ceramic membrane module in the membrane bioreactor according to the concentration of particulate matter in the reclaimed water being greater than a preset third concentration, 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 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 and reducing the depth of the flat ceramic membrane module, the environmental risks and potential hazards caused by unqualified treatment are reduced.

[0039] Further, according to the present invention, 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 plate ceramic membrane module does not meet the requirements, and the depth of the flat plate ceramic membrane module in the membrane bioreactor is increased, which overcomes the problem that the pressure of water on the flat plate ceramic membrane module is insufficient when the water level in the membrane bioreactor is low, resulting in low permeation efficiency of the flat plate ceramic membrane module and the liquid level drop rate in the membrane bioreactor not meeting the requirements. Increasing the depth of the flat plate ceramic membrane module in the membrane bioreactor can increase the pressure of the decomposed wire drawing waste liquid on the surface of the flat plate ceramic membrane module, so as to achieve that the permeation efficiency of the flat plate ceramic membrane module meets the requirements and improve the quality of wire drawing waste liquid treatment.

[0040] Further, according to the present invention, the loss degree of the pipeline is initially determined according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor, and the loss degree of the pipeline is secondly determined 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, which overcomes 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 inaccuracy of reclaimed water treatment due to the mixing of the components of the pipeline inner wall into the reclaimed water. When the loss degree of the pipeline does not meet the requirements, reducing the maximum conveying flow rate of the reclaimed water in the pipeline realizes the protection of the conveying pipeline.

[0041] Further, according to the present invention, the damage degree of the flat plate ceramic membrane module is initially determined according to the concentration of particulate matter in the reclaimed water output from the membrane bioreactor, and the damage degree of the flat plate ceramic membrane module is secondly determined by comparing the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate 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, which overcomes 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 plate ceramic membrane module, and further resulting in uneven particle distribution in the reclaimed water filtered by the flat plate 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, and the filtration accuracy of the flat plate ceramic membrane module is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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;

[0043] 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;

[0044] Figure 3It is the structural block diagram of the waste liquid basic treatment module of the intelligent treatment system for wire drawing waste liquid in the embodiment of the present invention;

[0045] Figure 4 It is the structural block diagram of the storage module of the intelligent treatment system for wire drawing waste liquid in the embodiment of the present invention;

[0046] 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 - Rotary motor, 11 - Rotary rod, 12 - Magnetic sleeve, 13 - Second water pump, 14 - Sludge tank, 15 - Third conveying pipeline, 16 - Medium water tank, 17 - Turbidity sensor, 18 - Flat ceramic membrane module. Detailed implementation manners

[0047] In order to make the objectives and advantages of the present invention clearer, 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.

[0048] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and do not limit the protection scope of the present invention.

[0049] 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 "including" 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 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 here may include wireless connection or wireless coupling.

[0050] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 as shown, which are respectively the overall structural block diagram of the intelligent treatment system for wire drawing waste liquid in the embodiment of the present invention, the structural diagrams of the decomposition module, the filtration module and the storage module, the structural block diagram of the waste liquid basic treatment module, and the structural block diagram of the storage module.

[0051] An intelligent treatment system for wire drawing waste liquid in an embodiment of the present invention includes:

[0052] The waste liquid basic treatment module includes 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;

[0053] Specifically, the pickling waste liquid treatment component includes:

[0054] A diffusion dialysis device for recovering free acid from pickling wire-drawing waste liquid and outputting free acid and acid-removed wire-drawing waste liquid;

[0055] A liquid storage tank connected to the diffusion dialysis device for storing the free acid;

[0056] An oxidation reaction tank connected to the diffusion dialysis device for adding an oxidant to the acid-removed wire-drawing waste liquid to convert into ;

[0057] A neutralization sedimentation tank connected to the oxidation reaction tank for adjusting the pH value to generate precipitation and synchronously removing heavy metals;

[0058] A first solid-liquid separation device connected to the neutralization sedimentation tank for filtering the precipitation to output pickling-treated waste liquid.

[0059] Specifically, the phosphating waste liquid treatment component includes:

[0060] A reaction tank for adding a calcium salt to phosphating wire-drawing waste liquid to generate hydroxyapatite precipitation;

[0061] A chelation reaction tank connected to the reaction tank for adding a chelating agent to fully react the chelating agent with heavy metal ions and generate chelate precipitation;

[0062] A second solid-liquid separation device connected to the chelation reaction tank for filtering the hydroxyapatite precipitation and chelate precipitation to output phosphating-treated waste liquid.

[0063] 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.

[0064] 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 6;

[0065] Filter module, which is connected to the decomposition module and used to filter impurities in the decomposed wire-drawing waste liquid, including a membrane bioreactor 9 connected to the anaerobic pond 6 for filtering the decomposed wire-drawing waste liquid to output reclaimed water, and a flow regulation component connected to the membrane bioreactor 9 for regulating the flow rate of reclaimed water transportation. Among them, the membrane bioreactor 9 includes a flat ceramic membrane group 18 for filtering the decomposed wire-drawing waste liquid, an electric telescopic rod 3 for adjusting the depth of the flat ceramic membrane group 18, and a magnetic absorption sleeve 12 partially sleeved on the flat ceramic membrane group 18 for adsorbing metal impurities in the decomposed wire-drawing waste liquid;

[0066] Control module, which is respectively connected to the decomposition module and the filter module, and 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 reclaimed water according to the concentration of particulate matter in the reclaimed water and the transportation pressure of reclaimed water, and determine the rotation frequency of the magnetic absorption 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.

[0067] 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 will not be elaborated here.

[0068] In implementation, the present invention overcomes the problem that bacteria and viruses in the decomposed wire-drawing waste liquid cannot be converted into small molecule substances and reduces the pollution load of the wire-drawing waste liquid by setting a waste liquid basic treatment module, a decomposition module, a filter module, a storage module and a control module, and treating and filtering the pickling waste liquid and phosphating waste liquid through the setting of anaerobic bacteria and the flat ceramic membrane group 18; by monitoring the concentration of particulate matter in the reclaimed water, the problem of being unable to determine the accuracy of the decomposed wire-drawing waste liquid treatment and the filtering accuracy of the flat ceramic membrane group 18 is overcome, and the treatment efficiency of the wire-drawing waste liquid is improved; by setting the magnetic absorption sleeve 12 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 group 18 is overcome, the service life of the flat ceramic membrane group 18 is extended, the environmental pollution caused by the wire-drawing waste liquid is reduced, and the ecological balance and sustainable utilization of water resources are protected.

[0069] 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:

[0070] Calcination furnace, which is connected to the first solid-liquid separation device and used to calcine the sludge containing to obtain an iron-based water purifying agent;

[0071] A granulator, which is connected to the second solid-liquid separation device and is used to granulate the sludge containing hydroxyapatite to obtain slow-release phosphate fertilizer.

[0072] Specifically, the decomposition module further includes:

[0073] A first water pump 8, which is arranged on the inner wall of the membrane bioreactor 9 close to the anaerobic pond 6 and is used to provide the conveying power for the decomposed wire-drawing waste liquid.

[0074] A first conveying pipeline 5, which is connected to the first water pump 8 and is used to convey the decomposed wire-drawing waste liquid to the anaerobic pond 6.

[0075] A balance port 7, which is connected to the anaerobic pond 6 and enables the liquid levels of the anaerobic pond 6 and the membrane bioreactor 9 to be equal by providing a channel for the material interaction between the anaerobic pond 6 and the membrane bioreactor 9.

[0076] Specifically, the filtration module further includes:

[0077] A blower 4, which is arranged below the flat ceramic membrane module 18 and is used to adjust the turbulence speed of the wire-drawing waste liquid on the outer surface of the flat ceramic membrane module 18.

[0078] A rotating rod 11, which is connected to the magnetic attraction sleeve 12 and is used to transmit a horizontal rotational torque to the magnetic attraction sleeve 12.

[0079] A rotating motor 10, which is connected to the rotating rod 11 and is used to provide the horizontal rotational power for the rotating rod 11.

[0080] A second water pump 13, which is arranged on the inner wall of the membrane bioreactor 9 far from the anaerobic pond 6 and is used to provide the conveying power for the sludge.

[0081] A third conveying pipeline 15, which is connected to the second water pump 13 and is used to convey the sludge to the sludge pond 14.

[0082] Specifically, the flow rate regulating assembly includes:

[0083] A second conveying pipeline 1, which is connected to the flat ceramic membrane module 18 and is used to convey the reclaimed water to the reclaimed water pond 16.

[0084] A self-priming pump 2, which is connected to the second conveying pipeline 1 and is used to provide the conveying power for the reclaimed water.

[0085] Specifically, it further includes a storage module connected to the filtration module, which includes:

[0086] A sludge pond 14, which is connected to the third conveying pipeline 15 and is used to store sludge.

[0087] The intermediate water tank 16 is connected to the second conveying pipeline 1 for storing intermediate water;

[0088] The turbidity sensor 17 is connected to the intermediate water tank 16 for detecting the concentration of particulate matter in the intermediate water.

[0089] Specifically, the control module is respectively connected to the turbidity sensor 17 and the electric telescopic rod 3 to obtain the concentration of particulate matter in the intermediate water output by the membrane bioreactor 9. If the concentration of particulate matter in the intermediate water is greater than the preset first concentration, it is determined that the accuracy of wire drawing waste liquid treatment does not meet the requirements.

[0090] Wherein, if the concentration of particulate matter in the intermediate water output by 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;

[0091] 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.

[0092] 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.

[0093] Optionally, the value range of the preset third concentration can be [390 mg / L, 500 mg / L];

[0094] Preferably, the preferred embodiment of the preset third concentration is 450 mg / L;

[0095] In a specific embodiment, the concentration of particulate matter in the intermediate water is 600 mg / L, which is greater than the preset third concentration. For every 50 mg / L that the particulate matter concentration exceeds 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.

[0096] Optionally, the value range of the preset liquid level drop rate can be [5 cm / min, 7 cm / min];

[0097] Preferably, the preferred embodiment of the preset liquid level drop rate is 6 cm / min;

[0098] In one or more specific embodiments, the liquid level of the membrane bioreactor 9 drops at a rate of 4 cm / min, which is less than the preset liquid level drop rate. For every 0.5 cm / min that the liquid level drop rate of the membrane bioreactor 9 is less than the preset rate, the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9 increases 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.

[0099] In implementation, when the concentration of particulate matter in the reclaimed water is greater than the preset third concentration, the present invention reduces the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9, 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 unqualified treatment are reduced.

[0100] In implementation, when the liquid level drop rate of the membrane bioreactor 9 is less than the preset liquid level drop rate, the present invention determines that the permeation efficiency of the flat ceramic membrane module 18 does not meet the requirements and increases the depth of the flat ceramic membrane module 18 in the membrane bioreactor 9, overcoming the problem that when the water level in the membrane bioreactor 9 is relatively low, the pressure of water on the flat ceramic membrane module 18 is insufficient, resulting in low permeation efficiency of the flat ceramic membrane module 18 and the liquid level drop rate in the membrane bioreactor 9 not meeting 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 make the permeation efficiency of the flat ceramic membrane module 18 meet the requirements and improve the quality of wire-drawing waste liquid treatment.

[0101] 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 to perform a secondary determination of the loss degree of the pipeline according to the pressure inside the second conveying pipeline 1.

[0102] If the pressure inside the second conveying pipeline 1 is greater than the preset pressure, it is determined secondarily 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.

[0103] 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];

[0104] 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;

[0105] 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. It is preliminarily 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 above 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.

[0106] 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 from the membrane bioreactor 9, and makes a secondary determination of 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 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 causing 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.

[0107] Specifically, the control module is connected to the turbidity sensor 17 and the magnetic attraction sleeve 12. If the concentration of particulate matter in the reclaimed water output from the membrane bioreactor 9 is greater than the preset first concentration and less than or equal to the preset second concentration, it is preliminarily determined that the damage degree of the flat plate ceramic membrane group 18 does not meet the requirements, and the damage degree of the flat plate ceramic membrane group 18 is secondarily determined according to the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane group 18.

[0108] If the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane group 18 is greater than the preset standard deviation, it is secondarily determined that the damage degree of the flat plate ceramic membrane group 18 does not meet the requirements, and the rotation frequency of the magnetic attraction sleeve 12 is increased;

[0109] 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.

[0110] Specifically, a number of sampling points are arranged at equal intervals in the reclaimed water in the flat plate ceramic membrane module 18, and the concentrations of a number of sampling points are detected and respectively recorded as , where n is a natural number not equal to 0. 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.

[0111] 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];

[0112] 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;

[0113] 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 initially 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 increase in the standard deviation of the concentration of particulate matter in the reclaimed water in the flat plate ceramic membrane module 18 compared to 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.

[0114] In practice, the present invention initially 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 by the membrane bioreactor 9, and further determines 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 absorption sleeve 12 is increased, overcoming the problem that part of the iron wire component on the grille structure is carried away when the decomposed wire-drawing waste liquid passes through the grille, thereby causing scratches to 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 absorption sleeve 12, the adsorption efficiency of the magnetic absorption sleeve 12 for iron wire is increased, and the filtration accuracy of the flat plate ceramic membrane module 18 is improved.

[0115] 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 a preset concentration.

[0116] Wherein, 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.

[0117] 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.

[0118] So far, the technical solutions of the present invention have 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 tank; 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 tank 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 plate ceramic membrane group for filtering the decomposed drawing waste liquid, an electric telescopic rod for adjusting the depth of the flat plate ceramic membrane group, and a magnetic adsorption sleeve partially sleeved on the flat plate 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 plate 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 transportation flow rate of reclaimed water according to the concentration of particulate matter in the reclaimed water and the transportation pressure of 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 plate 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 tank, 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 tank; A balance port, connected to the anaerobic tank, which provides a channel for material interaction between the anaerobic tank and the membrane bioreactor to make the liquid levels of the anaerobic tank 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 plate ceramic membrane group, for adjusting the turbulent flow velocity of the drawing waste liquid on the outer surface of the flat plate ceramic membrane group; A rotating rod, connected to the magnetic adsorption sleeve, for transmitting a horizontal rotation torque to the magnetic adsorption sleeve; A rotating motor, connected to the rotating rod, for providing the horizontal rotation power of the rotating rod; A second water pump, arranged on the inner wall of the membrane bioreactor far from the anaerobic tank, 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 tank.

4. The intelligent treatment system for wire drawing waste liquid according to claim 3, characterized in that, The flow rate adjustment component includes: A second transportation pipeline, connected to the flat plate ceramic membrane group, for transporting reclaimed water to the reclaimed water tank; A self-priming pump, connected to the second transportation pipeline, for providing the transportation power of 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 tank, connected to the third transportation pipeline, for storing sludge; A reclaimed water tank, connected to the second transportation pipeline, for storing reclaimed water; A turbidity sensor, which is connected to the intermediate water tank and is 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, characterized in that, 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, wherein, 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 on 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 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 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 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 the 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.

9. The intelligent treatment system for wire drawing waste liquid according to claim 8, characterized in that, 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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