Agglomeration-theory-based flocculation control method and apparatus, and electronic device and medium

Abstract

Provided in the present application are an agglomeration-theory-based flocculation control method and apparatus, and an electronic device and a medium. The method comprises: acquiring feed volumetric concentration and liquid phase viscosity of a thickener, and on the basis of the feed volumetric concentration, determining the ratio of the volume of bound-water-containing flocs to the volume of all flocs; on the basis of the feed volumetric concentration, the ratio of the volume of the bound-water-containing flocs to the volume of all the flocs, and the liquid phase viscosity, determining the current settling velocity of the flocs in the thickener; on the basis of the feed volumetric concentration, discharge volumetric concentration of the thickener, and a solid flux per unit time per unit area, determining a target settling velocity; and when the current settling velocity is less than N times the target settling velocity, adjusting the feed volumetric concentration, flocculant dosage or agitation rate of the thickener, wherein N>1. In the present application, flocculation, agglomeration and settling processes can be precisely regulated on the basis of feed volumetric concentration, flocculant dosage or an agitation rate of a thickener, thereby providing guidance and a basis for realizing the optimal agglomeration effect.

Description

Flocculation control method and device based on agglomeration theory, electronic equipment and medium TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrometallurgical solid-liquid separation, in particular to a flocculation control method and device based on agglomeration theory, electronic equipment and medium. BACKGROUND

[0002] In the fields of mineral processing, metallurgy, water treatment, etc., solid-liquid separation is often involved, especially using large thickeners for solid-liquid separation. In this process, solid particles, flocculants, filter aids and other auxiliary agents form agglomerates through mutual collision and contact, thereby accelerating the settling separation of the materials.

[0003] In order to achieve efficient solid-liquid separation, it is necessary to control the agglomeration process and understand the mechanism of agglomeration and solid-liquid separation, thereby better guiding production. Different flocculants and different material particles have different interaction modes, resulting in different flocculation and agglomeration mechanisms. Generally, the flocculation and agglomeration mechanism can be divided into four types: electro-neutralization, electrostatic clustering, adhesion bridging and net capture sweeping. In most agglomeration systems, more than one flocculation mechanism often works, usually as a result of multiple mechanisms working together. Therefore, how to scientifically and reasonably understand the agglomeration process is the key to realizing hydrometallurgical solid-liquid separation.

[0004] In actual production, there are many factors affecting flocculation and agglomeration, and flocculation and agglomeration are the core of material settling. If the settling process is not handled properly, it will have a serious impact on production efficiency and product quality. Therefore, how to accurately control the flocculation and agglomeration and settling process becomes an important issue.

[0005] SUMMARY

[0006] Therefore, it is necessary to provide a flocculation control method and device based on agglomeration theory, electronic equipment and medium, which accurately controls the flocculation and agglomeration and settling process, and provides guidance and basis for achieving the best agglomeration effect.

[0007] To solve the above problems, on the one hand, the present application provides a flocculation control method based on agglomeration theory, comprising:

[0008] Obtaining the feed volume concentration and liquid viscosity of the thickener, and determining the ratio of the volume of flocculation body containing bound water to the volume of all flocculation bodies based on the feed volume concentration;

[0009] Based on the feed volume concentration, the ratio of the volume of flocculation body containing bound water to the volume of all flocculation bodies, and the liquid viscosity, the current settling velocity of the flocculation body in the thickener is determined;

[0010] determine a target settling velocity based on the feed volume concentration, a discharge volume concentration of the thickener, and a solid flux per unit area per unit time;

[0011] In a case where the current settling velocity is less than N times of the target settling velocity, adjust the feed volume concentration, the flocculant addition amount, or the stirring rate of the thickener to adjust the settling velocity of the flocculating body to more than N times of the target settling velocity; N>1.

[0012] In a possible implementation, the ratio of the flocculating body volume containing bound water to the total flocculating body volume is determined based on the feed volume concentration, comprising:

[0013] substitute the feed volume concentration into a preset quadratic fitting polynomial to obtain the ratio of the flocculating body volume containing bound water to the total flocculating body volume;

[0014] The independent variable in the quadratic fitting polynomial is the feed volume concentration, and the dependent variable is the ratio of the flocculating body volume containing bound water to the total flocculating body volume.

[0015] In a possible implementation, the current settling velocity of the flocculating body in the thickener is determined based on the feed volume concentration, the ratio of the flocculating body volume containing bound water to the total flocculating body volume, and the liquid viscosity, comprising:

[0016] The current settling velocity of the flocculating body in the thickener is determined based on the feed volume concentration, the ratio of the flocculating body volume containing bound water to the total flocculating body volume, and the liquid viscosity, and the density of the flocculating body and the characteristic diameter of the flocculating body.

[0017] In a possible implementation, the formula for calculating the current settling velocity of the flocculating body in the thickener is as follows:

[0018] wherein ρ2 is the density of the flocculating body, ρ1 is the density of the liquid phase, d is the characteristic diameter of the flocculating body, η is the liquid viscosity, g is the acceleration of gravity, v s is the current settling velocity of the flocculating body in the thickener, γ is the ratio of the flocculating body volume containing bound water to the total flocculating body volume, and C1 is the feed volume concentration.

[0019] In a possible implementation, the formula for calculating the target settling velocity is as follows:

[0020] wherein Q is the solid flux per unit area per unit time, C1 is the feed volume concentration, C2 is the discharge volume concentration, v n is the target settling velocity.

[0021] In a possible implementation, in the case that the current settling velocity is less than N times of the target settling velocity, the feed volume concentration, the flocculant addition amount or the stirring rate of the thickener is adjusted, including:

[0022] In the case that the discharge volume concentration is greater than the target discharge volume concentration and the current settling velocity is less than N times of the target settling velocity, the thickener is adjusted to reduce the feed volume concentration, increase the flocculant addition amount or increase the stirring rate.

[0023] In a possible implementation, in the case that the current settling velocity is less than N times of the target settling velocity, the feed volume concentration, the flocculant addition amount or the stirring rate of the thickener is adjusted, and further including:

[0024] In the case that the discharge volume concentration is less than or equal to the target discharge volume concentration and the current settling velocity is less than N times of the target settling velocity, the thickener is adjusted to increase the flocculant addition amount or increase the stirring rate.

[0025] In another aspect, the present application further provides a flocculation control device, including:

[0026] A flocculant dosage calculation module is configured to acquire the feed volume concentration and the liquid viscosity of the thickener, and determine the ratio of the flocculating body volume containing bound water to the total flocculating body volume based on the feed volume concentration;

[0027] A flocculating body settling velocity calculation module is configured to determine the current settling velocity of the flocculating body in the thickener based on the feed volume concentration, the ratio of the flocculating body volume containing bound water to the total flocculating body volume and the liquid viscosity;

[0028] A target settling velocity determination module is configured to determine the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener and the solid flux per unit area per unit time;

[0029] A parameter adjustment module is configured to adjust the feed volume concentration, the flocculant addition amount or the stirring rate of the thickener in the case that the current settling velocity is less than N times of the target settling velocity, so as to adjust the settling velocity of the flocculating body to be greater than N times of the target settling velocity; N>1.

[0030] In another aspect, the present application further provides an electronic device, including a memory and a processor, wherein,

[0031] The memory is configured to store a program;

[0032] The processor is coupled with the memory and is configured to execute the program stored in the memory, so as to implement the steps of the flocculation control method based on the agglomeration theory according to any one of the above.

[0033] In another aspect, the present application also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the steps of the flocculation control method based on flocculation theory according to any one of the above.

[0034] The beneficial effects of the above implementation manner are that the flocculation control method, device, electronic equipment and medium based on flocculation theory provided by the present application determine the current settling velocity of the flocculation body in the thickener through the feed volume concentration of the thickener, the ratio of the volume of the flocculation body containing combined water to the volume of all flocculation bodies, and the liquid viscosity, determine the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time, determine whether the actual settling velocity meets the requirements by combining the current settling velocity and the target settling velocity, if it meets the requirements, it means that the flocculation and settling effect of the slurry is good, otherwise it means that the actual settling effect is poor, and the feed volume concentration of the thickener, the flocculant addition amount or the stirring rate need to be adjusted, so that the relationship between the adjusted actual settling velocity and the target settling velocity meets the requirements, and then the present application can accurately regulate the flocculation and settling process by combining the feed volume concentration of the thickener, the flocculant addition amount or the stirring rate, and provide guidance and basis for achieving the best flocculation effect. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Fig. 1 is a flowchart of one embodiment of the flocculation control method based on flocculation theory provided by the present application;

[0037] Fig. 2 is a principle block diagram of one embodiment of the flocculation regulation device provided by the present application;

[0038] Fig. 3 is a structure schematic diagram of one embodiment of the electronic equipment provided by the present application. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely in the following by combining the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0041] The terms "comprises", "comprising", "includes", "including", "has", "having", "contains" and "containing" used in the present application are intended to cover the inclusions thereof without limitations, for example, processes, methods, apparatuses, products, or devices that comprise a series of steps or modules are not limited to only those steps or modules that are explicitly listed, but can include other steps or modules that are not explicitly listed or inherent to such processes, methods, products, or devices.

[0042] The naming or numbering of the steps appearing in the embodiments of the present application does not mean that the steps in the method process must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0043] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in the specification do not necessarily all refer to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments to one another. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein are combinable.

[0044] The present application provides a flocculation control method and device based on the flocculation theory, electronic equipment and medium, which are described below.

[0045] As shown in FIG. 1, the present application provides a flocculation control method based on the flocculation theory, comprising:

[0046] S101, obtaining the feed volume concentration and liquid phase viscosity of the thickener, and determining the ratio of the combined water-containing flocculation volume to the total flocculation volume based on the feed volume concentration;

[0047] S102, determining the current settling velocity of the flocculation body in the thickener based on the feed volume concentration, the ratio of the combined water-containing flocculation volume to the total flocculation volume, and the liquid phase viscosity;

[0048] S103, determining the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time;

[0049] S104, in the case that the current settling velocity is less than N times of the target settling velocity, adjusting the feed volume concentration, the flocculant addition amount or the stirring rate of the thickener to adjust the settling velocity of the flocculation body to more than N times of the target settling velocity; N>1.

[0050] It can be understood that N = 1.1 in the embodiment. The feed volume concentration of the thickener refers to the volume concentration of solid particles of the slurry entering the thickener.

[0051] The method provided in the application takes the agglomeration forming process and the settling performance of the agglomerates as the research objects, the flocculation agglomerates are simply referred to as flocculation bodies, the settling velocity of the flocculation bodies is a key parameter for realizing rapid solid-liquid separation, and in fact, the purpose of flocculation is to improve the settling velocity.

[0052] The application determines the current settling velocity of the flocculation bodies in the thickener based on the feed volume concentration of the thickener, the ratio of the volume of the flocculation bodies containing bound water to the volume of all the flocculation bodies, and the viscosity of the liquid phase, determines the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time, and determines whether the actual settling velocity meets the requirements by combining the current settling velocity and the target settling velocity. If the requirements are met, it indicates that the flocculation and settling effect of the slurry is good, otherwise, the actual settling effect is poor, and the feed volume concentration of the thickener, the amount of flocculant added, or the stirring rate needs to be adjusted, so that the relationship between the adjusted actual settling velocity and the target settling velocity meets the requirements, and then the application can accurately regulate the flocculation and settling process by combining the feed volume concentration of the thickener, the amount of flocculant added, or the stirring rate, thereby providing guidance and basis for realizing the best agglomeration effect.

[0053] In some embodiments, determining the current settling velocity of the flocculation bodies in the thickener based on the feed volume concentration, the ratio of the volume of the flocculation bodies containing bound water to the volume of all the flocculation bodies, and the viscosity of the liquid phase comprises:

[0054] Determining the current settling velocity of the flocculation bodies in the thickener based on the feed volume concentration, the ratio of the volume of the flocculation bodies containing bound water to the volume of all the flocculation bodies, and the viscosity of the liquid phase, and the density of the flocculation bodies and the characteristic diameter of the flocculation bodies.

[0055] In some embodiments, the calculation formula of the current settling velocity of the flocculation bodies in the thickener is as follows:

[0056] Wherein, ρ2 is the density of the flocculation bodies, ρ1 is the density of the liquid phase, d is the characteristic diameter of the flocculation bodies, η is the viscosity of the liquid phase, g is the acceleration of gravity, v s is the current settling velocity of the flocculation bodies in the thickener, γ is the ratio of the volume of the flocculation bodies containing bound water to the volume of all the flocculation bodies, and C1 is the feed volume concentration.

[0057] For material particles, the concentration C of the surface adsorbed flocculant is proportional to the flocculation efficiency, that is, the greater the concentration of the adsorbed flocculant, the larger the size of the flocculation body, so the characteristic diameter d of the flocculation body is proportional to the flocculation efficiency, that is,

[0058] d0, A is a proportionality coefficient, C is the concentration of flocculant in liquid phase, k is an adsorption parameter, and d0 is the average particle size of solid material before flocculation. The values of A and k are related to the properties of the material and the flocculant. When the types of the material and the flocculant are fixed, the values of A and k are also fixed and can be measured by experiments.

[0059] To specifically measure the values of A and k, multiple (at least two) portions of the slurry to be settled can be set, different doses of flocculant can be added respectively, the average particle size of the solid material in the slurry to be settled before adding the flocculant and the characteristic diameter of the flocculation body after flocculation and settlement are detected, and an equation set is established to calculate the values of A and k corresponding to the slurry (material) and the flocculant. It is easy to understand that in actual application, a control table of A and k values of different types of materials and flocculants can be established to facilitate self-calling during flocculation control.

[0060] In some embodiments, determining the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies based on the volume concentration of the feedstock includes:

[0061] Substituting the volume concentration of the feedstock into a preset quadratic fitting polynomial to obtain the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies;

[0062] Wherein, the independent variable in the quadratic fitting polynomial is the volume concentration of the feedstock, and the dependent variable is the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies.

[0063] It can be understood that the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies can be calculated based on the following formula:

[0064] Wherein, γ is the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies, the value of γ is determined by the properties of the flocculant and the properties and concentration of the material, C1 is the volume concentration of the solid particles in the slurry (volume concentration of the feedstock), that is,

[0065] a1-a3 are undetermined coefficients related to the properties of the flocculant itself and the properties of the solid particles, when the properties of the flocculant and the material are stable, the values of a1-a3 can be determined by experimental means, and the values of a1-a3 can be specifically determined by an experimental control table, and the data in the control table can be automatically called. That is, the formula relates the initial parameters such as the volume concentration (density) and the viscosity, and for a given material, the concentration and the viscosity have a corresponding relationship.

[0066] The relationship between concentration and viscosity: for non-Newtonian fluid, the viscosity formula is:

[0067] η = (α1 + α2C s )ωb (3)

[0068] C s is the liquid phase flocculant concentration, a1, a2 are constants related to the properties of the flocculant itself, ω is the shear rate determined by the stirring rate of the thickener, b is a constant related to the properties of the fluid itself (the value is generally between -0.8 and -0.9). Therefore, under a certain stirring rate, the liquid phase viscosity can be calculated by the above formula.

[0069] As can be seen from the above, flocculation and its settlement is a very complex process, in order to ensure that the material can be separated efficiently, that is, quickly settled, by adjusting the feed volume concentration, flocculant dosage, stirring rate and so on.

[0070] In some embodiments, the calculation formula of the target settling velocity is as follows:

[0071] Wherein, Q is the solid flux per unit area per unit time, C1 is the feed volume concentration, C2 is the discharge volume concentration, v n is the target settling velocity.

[0072] It can be understood that the requirement of settling velocity is to meet the dynamic thickening process, the thickener to ensure the underflow concentration and stably discharge. For a given thickener, when the stable discharge, the settling velocity satisfies formula (4).

[0073] v n is the settling velocity when the stable discharge, that is, the target settling velocity. In order to meet the discharge amount and concentration, first of all, it should be ensured that the feed amount is consistent with the discharge, at this time, according to the discharge concentration demand, the minimum settling velocity can be calculated. Then according to v s ≥1.1v n , combined with formula (1) to adjust, that is, to reduce the feed slurry concentration, increase the flocculant dosage.

[0074] In some embodiments, in the case that the current settling velocity is less than N times of the target settling velocity, the feed volume concentration, flocculant dosage or stirring rate of the thickener is adjusted, including:

[0075] In the case that the discharge volume concentration is greater than the target discharge volume concentration, and the current settling velocity is less than N times of the target settling velocity, the thickener is adjusted to reduce the feed volume concentration, increase the flocculant dosage or increase the stirring rate.

[0076] In some embodiments, in the case that the current settling velocity is less than N times of the target settling velocity, the feed volume concentration, flocculant dosage or stirring rate of the thickener is adjusted, further including:

[0077] If the discharge volume concentration is less than or equal to the target discharge volume concentration, and the current settling velocity is less than N times the target settling velocity, the thickener is adjusted by increasing the amount of flocculant added or increasing the stirring rate.

[0078] It should be noted that when the v obtained by formula (1) s Satisfy: v s ≥1.1v n When the actual settling velocity is within the acceptable range, it indicates that the flocculation and settling effect of the slurry is good. Otherwise, it indicates that the actual settling effect is poor, and it is necessary to increase the dosage of flocculant or reduce the concentration of the feed slurry.

[0079] However, reducing the feed slurry concentration v n This will also increase, which may lead to the inability to meet the target discharge volume concentration and the target discharge rate per unit time; therefore, it is only possible to regulate by reducing the feed slurry concentration when the actual discharge volume concentration is greater than the target discharge volume concentration.

[0080] This application has undergone the following experimental verification according to the methods described in the above embodiments:

[0081] [According to Rule 26, amended 25.10.2024] The slurry after beneficiation of laterite nickel ore was tested and the slurry thickened by the thickener was tested. The feed volume concentration was measured to be 3.9%, pH was 6.8, and Zeta potential was 2.36mV. At this time, non-ionic PAM was selected (in this experimental example, the non-ionic PAM of the Chinese brand Aisen was used).

[0082] In the above scenario, the specific parameters obtained are as follows:

[0083] The current thickener has a feed volume concentration C1 = 3.9% and a liquid phase viscosity η = 8.92 * 10⁻⁶. -4 Pa·s, the ratio of the volume of flocs containing bound water to the total volume of flocs γ = 7.178;

[0084] The thickener's discharge volumetric concentration C2 = 17.24%, and the solids throughput per unit area per unit time Q = 0.0061 m³ / s. 3 / s;

[0085] The density of the flocculent ρ2 = 3.2 * 10 3 kg / m 3 ;

[0086] The characteristic diameter d of the flocs satisfies the formula d0, where C and the relationship between d / d0 can be found in Table 1:

[0087] Table 1: Flocculant Concentration in Liquid Phase

[0088] By experiment, A=-12.671, k=-37767.756;

[0089] d0=10um;

[0090] At this time, the addition amount of flocculant is C≈1.0*10 -5 , and d=92.97um can be obtained by substituting the above formula;

[0091] Substituting the above measured parameters into formulas (1)-(4), the current settling velocity v s of the flocculation body is 11.618mm / s, and the target settling velocity v n is 12.1mm / s;

[0092] In this embodiment, N=1.1, therefore, v s is less than 1.1 times of v n , which does not meet the requirement and needs to be adjusted.

[0093] At this time, there are three adjustment methods:

[0094] The first method is to reduce the feed volume concentration of the thickener, and after adjustment, C1=3.5%, γ=7.270, η=8.92*10 -4 Pa·s, C2=16.34%, Q=0.00464m 3 / s, the adjusted v s is 11.551mm / s, v n is 10.427mm / s, which meets v s greater than 1.1 times of v n .

[0095] The second method is to increase the addition amount of flocculant (so that C≈1.17*10 -5 ), and after adjustment, C1=3.9%, γ=7.178, η=1.195*10 -3 Pa·s, C2=17.24%, Q=0.0061m 3 / s, the adjusted v s is 13.656mm / s, v n is 12.1mm / s, which meets v s greater than 1.1 times of v n .

[0096] The third method is to increase the stirring rate of the thickener, and after adjustment, C1=3.9%, γ=7.178, η=7.43*10 -4 Pa·s, C2=17.24%, Q=0.0061m 3 / s, the adjusted vs = 13.582 mm / s, v n = 12.1 mm / s, v s > 1.1 times v n .

[0097] As shown in FIG. 2, the present application also provides a flocculation control device 200, comprising:

[0098] a flocculant dosage calculation module 201, configured to acquire a feed volume concentration of a thickener and a liquid phase viscosity, and determine a ratio of a flocculation volume containing bound water to a total flocculation volume based on the feed volume concentration;

[0099] a flocculation volume calculation module 202, configured to determine a current settling velocity of flocculation in the thickener based on the feed volume concentration, the ratio of the flocculation volume containing bound water to the total flocculation volume, and the liquid phase viscosity;

[0100] a target settling velocity determination module 203, configured to determine a target settling velocity based on the feed volume concentration, a discharge volume concentration of the thickener, and a solid flux per unit area per unit time;

[0101] a parameter adjustment module 204, configured to adjust the feed volume concentration of the thickener, a flocculant addition amount, or a stirring rate to adjust the settling velocity of the flocculation to more than N times of the target settling velocity when the current settling velocity is less than N times of the target settling velocity; N > 1.

[0102] The flocculation control device provided by the above embodiment can implement the technical solutions described in the flocculation control method embodiment based on the agglomeration theory. The principles of the specific implementation of the above modules or units can be referred to the corresponding content in the flocculation control method embodiment based on the agglomeration theory, which will not be described here again.

[0103] As shown in FIG. 3, the present application also provides an electronic device 300. The electronic device 300 includes a processor 301, a memory 302, and a display 303. FIG. 3 only shows part of the components of the electronic device 300, but it should be understood that all the components shown are not required, and more or less components can be implemented instead.

[0104] The memory 302 can be an internal storage unit of the electronic device 300 in some embodiments, such as a hard disk or a memory of the electronic device 300. The memory 302 can also be an external storage device of the electronic device 300 in other embodiments, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 300.

[0105] Further, the memory 302 can include both an internal storage unit of the electronic device 300 and an external storage device. The memory 302 is used to store application software installed in the electronic device 300 and various types of data.

[0106] The processor 301 can be a central processing unit (CPU), a microprocessor, or other data processing chip in some embodiments, and is used to run program codes stored in the memory 302 or process data, such as the flocculation control method based on the flocculation theory in the present application.

[0107] The display 303 can be an LED display, a liquid crystal display, a touch liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, etc. in some embodiments. The display 303 is used to display information of the electronic device 300 and to display a visualized user interface. The components 301-303 of the electronic device 300 communicate with each other through a system bus.

[0108] In some embodiments of the present application, when the processor 301 executes the flocculation control program in the memory 302, the following steps can be implemented:

[0109] Obtaining the feed volume concentration and the liquid phase viscosity of the thickener, and determining the ratio of the volume of flocculation body containing bound water to the volume of all flocculation bodies based on the feed volume concentration;

[0110] Determining the current settling velocity of the flocculation body in the thickener based on the feed volume concentration, the ratio of the volume of flocculation body containing bound water to the volume of all flocculation bodies, and the liquid phase viscosity;

[0111] Determining the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time;

[0112] In the case where the current settling velocity is less than N times of the target settling velocity, adjusting the feed volume concentration, the flocculant addition amount, or the stirring rate of the thickener to adjust the settling velocity of the flocculation body to more than N times of the target settling velocity; N > 1.

[0113] It should be understood that, in addition to the above functions, the processor 301 can also implement other functions when executing the flocculation control program in the memory 302, which can be specifically referred to the description of the corresponding method embodiments.

[0114] Further, the type of the electronic device 300 is not limited in the embodiments of the present application. The electronic device 300 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, or the like. Exemplary embodiments of the portable electronic device include, but are not limited to, a portable electronic device running an IOS, an Android, a Microsoft, or other operating system. The portable electronic device can also be another portable electronic device, such as a laptop computer having a touch-sensitive surface (e.g., a touch panel). It should also be understood that, in some other embodiments of the present application, the electronic device 300 can not be a portable electronic device, but a desktop computer having a touch-sensitive surface (e.g., a touch panel).

[0115] In another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the flocculation control method based on the flocculation theory provided by the above method, and the method comprises:

[0116] obtaining the feed volume concentration and the liquid viscosity of the thickener, and determining the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies based on the feed volume concentration;

[0117] determining the current settling velocity of the flocculation body in the thickener based on the feed volume concentration, the ratio of the volume of the flocculation body containing bound water to the volume of all flocculation bodies, and the liquid viscosity;

[0118] determining the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time;

[0119] adjusting the feed volume concentration, the flocculant addition amount, or the stirring rate of the thickener to adjust the settling velocity of the flocculation body to more than N times of the target settling velocity, when the current settling velocity is less than N times of the target settling velocity; N>1.

[0120] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. The computer readable storage medium includes a magnetic disk, an optical disk, a read-only memory, a random access memory, and the like.

[0121] The flocculation control method and device based on the flocculation theory provided by the application are described in detail above, and the principles and implementation manners of the application are described by applying specific examples. The above description of the examples is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation manners and application ranges will be changed, and the above description of the specification should not be understood as a limitation on the application.

Claims

1. A flocculation control method based on the theory of coagulation, characterized by, The method comprises the following steps: obtaining the feed volume concentration and the liquid phase viscosity of the thickener, and determining the ratio of the flocculation volume containing bound water to the total flocculation volume based on the feed volume concentration; determining the current settling velocity of the flocculation in the thickener based on the feed volume concentration, the ratio of the flocculation volume containing bound water to the total flocculation volume, and the liquid phase viscosity; determining the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time; adjusting the feed volume concentration, the flocculant dosage or the stirring speed of the thickener to adjust the settling velocity of the flocculation to more than N times of the target settling velocity when the current settling velocity is less than N times of the target settling velocity; N>1.

2. The flocculation control method based on the floe theory according to claim 1, characterized by, The method for determining the ratio of the flocculation volume containing bound water to the total flocculation volume based on the feed volume concentration comprises: substituting the feed volume concentration into a preset quadratic fitting polynomial to obtain the ratio of the flocculation volume containing bound water to the total flocculation volume; wherein the independent variable in the quadratic fitting polynomial is the feed volume concentration, and the dependent variable is the ratio of the flocculation volume containing bound water to the total flocculation volume.

3. The floe-based flocculation control method of claim 1, wherein, The method for determining the current settling velocity of the flocculation in the thickener based on the feed volume concentration, the ratio of the flocculation volume containing bound water to the total flocculation volume, and the liquid phase viscosity comprises: determining the current settling velocity of the flocculation in the thickener based on the feed volume concentration, the ratio of the flocculation volume containing bound water to the total flocculation volume, the liquid phase viscosity, the density of the flocculation, and the characteristic diameter of the flocculation.

4. The flocculation control method based on the floe theory according to claim 3, characterized by, The formula for calculating the current settling velocity of the flocculates in the thickener is as follows: where p2 is the density of the floc, pi is the density of the liquid phase, d is the characteristic diameter of the floc, η is the viscosity of the liquid phase, g is the gravitational acceleration, v s is the current settling velocity of the flocs in the thickener, γ is the ratio of the volume of flocs containing bound water to the total volume of flocs, and Ci is the volumetric concentration of the feed.

5. The floe-based flocculation control method of claim 1, wherein, The formula for calculating the target settling rate is as follows: where Q is the solid flux per unit area per unit time, Ci is the feed volume concentration, C2 is the discharge volume concentration, v is the average linear velocity of the solid in the discharge, and t is the residence time. n is the target settling velocity.

6. The flocculation control method based on the floe theory according to any one of claims 1 to 5, characterized in that, The method for adjusting the feed volume concentration, the flocculant dosage or the stirring speed of the thickener when the current settling velocity is less than N times of the target settling velocity comprises: adjusting the feed volume concentration, the flocculant dosage or the stirring speed of the thickener to decrease the feed volume concentration, increase the flocculant dosage or increase the stirring speed when the discharge volume concentration is greater than the target discharge volume concentration and the current settling velocity is less than N times of the target settling velocity.

7. The flocculation control method based on the floe theory according to claim 6, characterized by, The method for adjusting the feed volume concentration, the flocculant dosage or the stirring speed of the thickener when the current settling velocity is less than N times of the target settling velocity further comprises: adjusting the flocculant dosage or the stirring speed of the thickener when the discharge volume concentration is less than or equal to the target discharge volume concentration and the current settling velocity is less than N times of the target settling velocity.

8. A flocculation control device, characterized by, The method comprises the following steps: a flocculant dosage calculation module for obtaining the feed volume concentration and the liquid phase viscosity of the thickener, and determining the ratio of the flocculation volume containing bound water to the total flocculation volume based on the feed volume concentration; a flocculation settling velocity calculation module for determining the current settling velocity of the flocculation in the thickener based on the feed volume concentration, the ratio of the flocculation volume containing bound water to the total flocculation volume, and the liquid phase viscosity; a target settling velocity determination module for determining the target settling velocity based on the feed volume concentration, the discharge volume concentration of the thickener, and the solid flux per unit area per unit time; A parameter adjustment module is configured to adjust the feed volume concentration, the flocculant addition amount or the stirring rate of the thickener to adjust the settling velocity of the flocculation body to more than N times of the target settling velocity, if the current settling velocity is less than N times of the target settling velocity; N>1.

9. An electronic device, comprising: comprising a memory and a processor, The memory is configured to store a program. The processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps of the flocculation control method based on the agglomeration theory according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the flocculation control method based on the agglomeration theory according to any one of claims 1 to 7.

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