Mechanical-agitation-based continuous sludge discharge method and system for water clarifier

Abstract

A mechanical-agitation-based continuous sludge discharge method and system for a water clarifier. The method comprises: acquiring an amount of water, which is to be clarified, in a water clarifier, and adding a flocculant into the water clarifier according to the amount of said water; setting an initial operation rotation speed of an agitator according to the addition amount of the flocculant, acquiring real-time data of the interior of the water clarifier, adjusting the initial operation rotation speed, and ending the agitation with an adjusted operation rotation speed; leaving the water clarifier standing still for a period of time, then acquiring a real-time precipitation amount of large-particle coagula by means of a pressure sensor, and setting an initial valve opening degree and an opening duration of a sludge discharge valve; and acquiring a pressure change rate of the pressure sensor, correcting the initial valve opening degree, and ending the sludge discharge with a corrected valve opening degree. In the present application, agitation and sludge-discharge operations are precisely controlled, such that the treatment effect of a water clarifier is improved, an increase in water turbidity and waste of water resources are reduced, and the maintenance costs and the requirements for manual intervention are also reduced.

Description

A continuous sludge discharge method and system for a clarifier based on mechanical stirring Technical Field

[0001] The present invention relates to the technical field of sediment cleaning, and in particular to a continuous sludge discharge method and system for a clarifier based on mechanical stirring. Background Art

[0002] Clarifiers are common equipment in water treatment systems, used to remove suspended solids from water to provide clear, transparent water. They are used in a wide range of applications, including drinking water treatment, wastewater treatment, and industrial water treatment. The primary function of a clarifier is to settle, aggregate, and separate suspended solids through physical and chemical processes. It typically consists of a large container or tank with appropriate volume and structure to enable efficient sedimentation and separation of suspended solids.

[0003] However, the current clarifier is generally used to discharge mud intermittently by gravity through the mud discharge pipe at the bottom of the clarifier. The diameter of the mud discharge pipe is greater than 150mm, and the instantaneous flow rate during mud discharge is greater than 400m3 / h. The impact force on the pipeline and valve is large, which can easily cause damage to the system equipment and require a lot of maintenance. It is particularly easy to cause excessive mud discharge, which reduces the active mud residue in the clarifier, increases the turbidity of the effluent, and wastes water resources seriously. The mud residue layer in the clarifier fluctuates greatly, has a large impact, is not easy to settle, and has high turbidity of the effluent.

[0004] Therefore, it is necessary to design a continuous sludge discharge method and system for clarifiers based on mechanical stirring to solve the current problems. Summary of the Invention

[0005] In view of this, the present invention proposes a continuous sludge discharge method and system for a clarifier based on mechanical stirring, aiming to solve the problems that the current clarifier sludge discharge has a great impact on the equipment, resulting in high maintenance and repair costs, and the unreasonable sludge discharge method causes waste of water resources and turbid water.

[0006] In one aspect, the present invention provides a method for continuous sludge discharge from a clarifier based on mechanical agitation, comprising:

[0007] Obtaining the amount of water to be clarified in the clarification tank, and adding flocculant to the clarification tank according to the amount of water to be clarified;

[0008] Setting an initial operating speed of the stirrer according to the amount of flocculant added, acquiring real-time data in the clarifier, adjusting the initial operating speed according to the real-time data, and completing stirring at the adjusted operating speed;

[0009] After a period of rest, the real-time precipitation amount of large particles of condensate is obtained through the pressure sensor, and the initial valve opening and opening time of the mud discharge valve are set according to the real-time precipitation amount;

[0010] The pressure change rate of the pressure sensor is obtained, the initial valve opening is corrected according to the pressure change rate, and the mud discharge is completed with the corrected valve opening.

[0011] Furthermore, obtaining the amount of water to be clarified in the clarification tank and adding a flocculant to the clarification tank according to the amount of water to be clarified includes:

[0012] A first preset water volume L1, a second preset water volume L2, a third preset water volume L3 and a fourth preset water volume L4 are preset, and L1 < L2 < L3 < L4;

[0013] A first preset addition amount J1, a second preset addition amount J2, a third preset addition amount J3 and a fourth preset addition amount J4 are preset, and J1 < J2 < J3 < J4;

[0014] According to the relationship between the amount of water to be clarified L0 and each preset water amount, a preset addition amount is selected as the addition amount of the flocculant;

[0015] When L1≤L0<L2, the first preset addition amount J1 is selected as the addition amount of the flocculant;

[0016] When L2≤L0<L3, the second preset addition amount J2 is selected as the addition amount of the flocculant;

[0017] When L3≤L0<L4, the third preset addition amount J3 is selected as the addition amount of the flocculant;

[0018] When L4≤L0, the fourth preset addition amount J4 is selected as the addition amount of the flocculant.

[0019] Furthermore, real-time data in the clarifier is obtained, the initial operating speed is adjusted according to the real-time data, and stirring is completed at the adjusted operating speed, including:

[0020] Obtaining a real-time flow rate S0 of the mixture in the clarifier, presetting a first preset flow rate S1, a second preset flow rate S2, a third preset flow rate S3, and a fourth preset flow rate S4, wherein S1<S2<S3<S4;

[0021] A first preset adjustment coefficient A1, a second preset adjustment coefficient A2, a third preset adjustment coefficient A3 and a fourth preset adjustment coefficient A4 are preset, and A1<A2<A3<A4;

[0022] According to the relationship between the real-time flow rate S0 and each preset flow rate, an adjustment coefficient is selected to adjust the initial operating speed V0 to obtain an adjusted operating speed;

[0023] When S1≤S0<S2, the fourth preset adjustment coefficient A4 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A4;

[0024] When S2≤S0<S3, the third preset adjustment coefficient A3 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A3;

[0025] When S3≤S0<S4, the second preset adjustment coefficient A2 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A2;

[0026] When S4≤S0, the first preset adjustment coefficient A1 is selected to adjust the initial operating speed V0 to obtain an adjusted operating speed V0*A1.

[0027] Furthermore, after selecting the i-th preset adjustment coefficient Ai to adjust the initial operating speed V0 and obtaining the adjusted operating speed V0*Ai, the initial operating speed is adjusted according to the real-time data to complete stirring at the adjusted operating speed, and further includes:

[0028] Obtaining the real-time temperature W0 in the clarifier, presetting a first preset temperature W1, a second preset temperature W2, a third preset temperature W3, and a fourth preset temperature W4, wherein W1<W2<W3<W4;

[0029] A preset adjustment coefficient is selected according to the magnitude relationship between the real-time temperature WO and each preset temperature to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed.

[0030] Furthermore, a preset adjustment coefficient is selected according to the relationship between the real-time temperature WO and each preset temperature to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed, including:

[0031] When W1≤W0<W2, the fourth preset adjustment coefficient A4 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain a secondary adjusted operating speed V0*Ai*A4;

[0032] When W2≤W0<W3, the third preset adjustment coefficient A3 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain a secondary adjusted operating speed V0*Ai*A3;

[0033] When W3≤W0<W4, the second preset adjustment coefficient A2 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain a secondary adjusted operating speed V0*Ai*A2;

[0034] When W4≤W0, the first preset adjustment coefficient A1 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed V0*Ai*A1.

[0035] Furthermore, the real-time precipitation amount of large particles of condensate is obtained by a pressure sensor, and the initial valve opening and opening time of the mud discharge valve are set according to the real-time precipitation amount, including:

[0036] A first preset sedimentation amount C1, a second preset sedimentation amount C2, a third preset sedimentation amount C3 and a fourth preset sedimentation amount C4 are preset, and C1<C2<C3<C4;

[0037] The initial valve opening and opening time of the mud discharge valve are set according to the relationship between the real-time sedimentation amount C0 and each preset sedimentation amount.

[0038] Furthermore, according to the relationship between the real-time sedimentation amount C0 and each preset sedimentation amount, the initial valve opening and opening time of the mud discharge valve are set, including:

[0039] A first preset valve opening K1, a second preset valve opening K2, a third preset valve opening K3, and a fourth preset valve opening K4 are preset, and K1 < K2 < K3 < K4;

[0040] Preset a first preset on time length T1, a second preset on time length T2, a third preset on time length T3 and a fourth preset on time length T4, and T1 < T2 < T3 < T4;

[0041] When C1≤C0<C2, the first preset valve opening K1 is set as the initial valve opening, and the first preset opening time T1 is set as the opening time;

[0042] When C2≤C0<C3, the second preset valve opening K2 is set as the initial valve opening, and the second preset opening time T2 is set as the opening time;

[0043] When C3≤C0<C4, the third preset valve opening K3 is set as the initial valve opening, and the third preset opening time T3 is set as the opening time;

[0044] When C4≤C0, the fourth preset valve opening K4 is set as the initial valve opening, and the fourth preset opening time T4 is set as the opening time.

[0045] Furthermore, obtaining the pressure change rate of the pressure sensor, correcting the initial valve opening according to the pressure change rate, and completing mud discharge with the corrected valve opening, including:

[0046] A first preset change rate P1, a second preset change rate P2, a third preset change rate P3 and a fourth preset change rate P4 are preset, and P1 < P2 < P3 < P4;

[0047] The initial valve opening Ki is corrected according to the magnitude relationship between the pressure change rate P0 and each preset change rate to obtain a corrected valve opening.

[0048] Furthermore, the initial valve opening Ki is corrected according to the magnitude relationship between the pressure change rate P0 and each preset change rate to obtain the corrected valve opening, including:

[0049] A first preset correction coefficient B1, a second preset correction coefficient B2, a third preset correction coefficient B3 and a fourth preset correction coefficient B4 are preset, and B1<B2<B3<B4;

[0050] When P1≤P0<P2, the fourth preset correction coefficient B4 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B4;

[0051] When P2≤P0<P3, the third preset correction coefficient B3 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B3;

[0052] When P3≤P0<P4, the second preset correction coefficient B2 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B2;

[0053] When P4≤P0, the first preset correction coefficient B1 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B1.

[0054] Compared with existing technologies, the present invention offers the following advantages: by measuring the amount of water to be clarified in the clarifier and adding an appropriate amount of flocculant accordingly, it effectively promotes the coagulation and aggregation of suspended solids. By setting the initial operating speed of the agitator and adjusting it based on real-time data, the agitation process can be effectively controlled, ensuring sufficient mixing of suspended solids and flocculant, thereby improving the clarification effect. After agitation is completed, a pressure sensor monitors the amount of large coagulant particles that have settled in real time. Based on the real-time amount of settled solids, the initial opening and duration of the sludge discharge valve are adjusted to ensure precise control of the sludge discharge operation based on actual conditions. Furthermore, the initial opening is corrected using the pressure change rate to further optimize the sludge discharge effect. This achieves automated and precise control of continuous sludge discharge. The coagulation and aggregation of suspended solids is improved, enhancing the clarification effect and reducing the increase in effluent turbidity. Furthermore, precise sludge discharge control avoids excessive sludge discharge and waste of water resources. Control of the agitation and sludge discharge process is more stable and reliable, reducing equipment damage and repair work, and lowering maintenance costs and the need for manual intervention.

[0055] On the other hand, the present application also provides a continuous mud discharge system for a clarifier based on mechanical agitation, comprising:

[0056] An adding module is used to obtain the amount of water to be clarified in the clarifier, and add flocculant to the clarifier according to the amount of water to be clarified;

[0057] a stirring module, configured to set an initial operating speed of the stirrer according to the amount of flocculant added, obtain real-time data in the clarifier, adjust the initial operating speed according to the real-time data, and complete stirring at the adjusted operating speed;

[0058] The mud discharge module is used to obtain the real-time precipitation amount of large particles of condensate through a pressure sensor after a period of rest, and set the initial valve opening and opening time of the mud discharge valve according to the real-time precipitation amount;

[0059] The correction module is used to obtain the pressure change rate of the pressure sensor, correct the initial valve opening according to the pressure change rate, and complete mud discharge with the corrected valve opening.

[0060] It is understandable that the above-mentioned continuous sludge discharge and system of the clarifier based on mechanical stirring have the same beneficial effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0062] FIG1 is a flow chart of a method for continuous sludge discharge from a clarifier based on mechanical agitation according to an embodiment of the present invention;

[0063] FIG2 is a functional block diagram of a continuous sludge discharge system for a clarifier based on mechanical agitation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0064] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0065] In one aspect, referring to FIG1 , the present application provides a method for continuous sludge discharge from a clarifier based on mechanical agitation, comprising the following steps:

[0066] Step S100: obtaining the amount of water to be clarified in the clarifier, and adding flocculant to the clarifier according to the amount of water to be clarified.

[0067] Step S200, setting the initial operating speed of the stirrer according to the amount of flocculant added, obtaining real-time data in the clarifier, adjusting the initial operating speed according to the real-time data, and completing stirring at the adjusted operating speed.

[0068] Step S300: After a period of rest, the real-time precipitation amount of large particles of condensate is obtained through the pressure sensor, and the initial valve opening and opening time of the mud discharge valve are set according to the real-time precipitation amount.

[0069] Step S400: Obtain the pressure change rate of the pressure sensor, correct the initial valve opening according to the pressure change rate, and complete the mud discharge with the corrected valve opening.

[0070] Specifically, in step S100, the amount of water to be clarified in the clarifier is obtained, and an appropriate amount of flocculant is added to the clarifier based on this amount of water to promote the coagulation and sedimentation of suspended matter. In step S200, the initial operating speed of the mixer is set based on the amount of flocculant added, and real-time data from the clarifier is obtained. Based on this real-time data, the initial operating speed is adjusted to achieve optimal mixing results. In step S300, after a period of static time, pressure data is obtained using a pressure sensor. The real-time precipitation amount of large coagulants is determined based on this pressure data. Based on this real-time precipitation amount, the initial opening and opening duration of the mud discharge valve are set to control the discharge of sediment. In step S400, the pressure change rate of the pressure sensor is obtained, and the initial valve opening is corrected based on this change rate to achieve more precise mud discharge control. Before setting the initial valve opening, the valve can be set to a smaller opening to ensure that the clarifier is always in a mud discharge state and avoid sudden opening and impact on the valve.

[0071] It's clear that by adding an appropriate amount of flocculant based on the volume of water to be clarified, combined with mixer adjustments and real-time data monitoring, the efficiency of suspended solids coagulation and sedimentation can be effectively improved. By utilizing pressure sensors to monitor the real-time sedimentation volume and controlling and adjusting the sludge discharge valve accordingly, more precise and efficient sludge discharge can be achieved. This improves the clarifier's treatment efficiency, reduces suspended solids residue, and provides clearer water quality. It also reduces equipment damage and the need for repairs, thereby enhancing the stability and reliability of the water treatment system.

[0072] In some embodiments of the present application, step S100 obtains the volume of water to be clarified in the clarifier and adds flocculant to the clarifier based on the volume of water to be clarified. This includes presetting a first preset water volume L1, a second preset water volume L2, a third preset water volume L3, and a fourth preset water volume L4, where L1 < L2 < L3 < L4. Presetting a first preset addition amount J1, a second preset addition amount J2, a third preset addition amount J3, and a fourth preset addition amount J4, where J1 < J2 < J3 < J4. The preset addition amount is selected as the amount of flocculant to be added based on the relationship between the volume of water to be clarified L0 and each preset water volume.

[0073] Specifically, when L1≤L0<L2, the first preset addition amount J1 is selected as the addition amount of the flocculant. When L2≤L0<L3, the second preset addition amount J2 is selected as the addition amount of the flocculant. When L3≤L0<L4, the third preset addition amount J3 is selected as the addition amount of the flocculant. When L4≤L0, the fourth preset addition amount J4 is selected as the addition amount of the flocculant.

[0074] It is understood that if the volume of water to be clarified falls between two preset water volumes, then the preset addition amount corresponding to these two preset water volumes is selected as the flocculant addition amount. By presetting different preset water volumes and preset addition amounts and selecting them based on the volume of water to be clarified, the flocculant addition amount can be flexibly adjusted to meet clarification requirements under different water volume conditions.

[0075] In some embodiments of the present application, step S200 obtains real-time data from the clarifier, adjusts the initial operating speed based on the real-time data, and completes stirring at the adjusted operating speed, including: obtaining the real-time flow rate S0 of the mixture in the clarifier, presetting a first preset flow rate S1, a second preset flow rate S2, a third preset flow rate S3, and a fourth preset flow rate S4, with S1 < S2 < S3 < S4. Presetting a first preset adjustment coefficient A1, a second preset adjustment coefficient A2, a third preset adjustment coefficient A3, and a fourth preset adjustment coefficient A4, with A1 < A2 < A3 < A4. Based on the relationship between the real-time flow rate S0 and each preset flow rate, an adjustment coefficient is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed.

[0076] Specifically, when S1≤S0<S2, the fourth preset adjustment coefficient A4 is selected to adjust the initial operating speed V0, and the adjusted operating speed V0*A4 is obtained. When S2≤S0<S3, the third preset adjustment coefficient A3 is selected to adjust the initial operating speed V0, and the adjusted operating speed V0*A3 is obtained. When S3≤S0<S4, the second preset adjustment coefficient A2 is selected to adjust the initial operating speed V0, and the adjusted operating speed V0*A2 is obtained. When S4≤S0, the first preset adjustment coefficient A1 is selected to adjust the initial operating speed V0, and the adjusted operating speed V0*A1 is obtained.

[0077] As can be understood, the mixer's operating speed is precisely adjusted based on real-time flow rate changes. By selecting preset flow rates and adjustment coefficients within different flow rate ranges, the mixer's speed is matched to changes in the mixture's flow rate, ensuring that the mixture in the clarifier is fully mixed and suspended, promoting the flocculant's coagulation effect. This increases the settling rate and coagulation efficiency of suspended solids in the clarifier, thereby improving the clarification effect and treatment capacity of the water treatment system.

[0078] In some embodiments of the present application, after selecting the i-th preset adjustment coefficient Ai to adjust the initial operating speed V0 and obtaining the adjusted operating speed V0*Ai, step S200 adjusts the initial operating speed based on real-time data to complete agitation at the adjusted operating speed. The process also includes: obtaining the real-time temperature W0 within the clarifier, presetting a first preset temperature W1, a second preset temperature W2, a third preset temperature W3, and a fourth preset temperature W4, wherein W1<W2<W3<W4. A preset adjustment coefficient is selected based on the relationship between the real-time temperature WO and each preset temperature to perform a secondary adjustment on the adjusted operating speed V0*Ai, obtaining the secondary adjusted operating speed.

[0079] Specifically, when W1≤W0<W2, the fourth preset adjustment coefficient A4 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai, and the secondary adjusted operating speed V0*Ai*A4 is obtained. When W2≤W0<W3, the third preset adjustment coefficient A3 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai, and the secondary adjusted operating speed V0*Ai*A3 is obtained. When W3≤W0<W4, the second preset adjustment coefficient A2 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai, and the secondary adjusted operating speed V0*Ai*A2 is obtained. When W4≤W0, the first preset adjustment coefficient A1 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai, and the secondary adjusted operating speed V0*Ai*A1 is obtained.

[0080] It's clear that adjusting the mixer speed based on both real-time flow rate and temperature is crucial. By making these adjustments based on both real-time flow rate and temperature, the mixer speed can be more precisely controlled to achieve optimal mixing. This effectively addresses the variability of the mixture under varying flow rates and temperatures, improving the clarifier's treatment efficiency and coagulation effectiveness, thereby enhancing the overall performance of the water treatment system.

[0081] In some embodiments of the present application, step S300 obtains the real-time precipitation amount of large condensate particles via a pressure sensor, and sets the initial valve opening and opening duration of the mud discharge valve based on the real-time precipitation amount. This includes presetting a first preset precipitation amount C1, a second preset precipitation amount C2, a third preset precipitation amount C3, and a fourth preset precipitation amount C4, with C1 < C2 < C3 < C4. The initial valve opening and opening duration of the mud discharge valve are set based on the relationship between the real-time precipitation amount C0 and each preset precipitation amount.

[0082] Specifically, a first preset valve opening K1, a second preset valve opening K2, a third preset valve opening K3, and a fourth preset valve opening K4 are pre-set, with K1 < K2 < K3 < K4. A first preset opening duration T1, a second preset opening duration T2, a third preset opening duration T3, and a fourth preset opening duration T4 are pre-set, with T1 < T2 < T3 < T4. When C1 ≤ C0 < C2, the first preset valve opening K1 is set as the initial valve opening, and the first preset opening duration T1 is set as the opening duration. When C2 ≤ C0 < C3, the second preset valve opening K2 is set as the initial valve opening, and the second preset opening duration T2 is set as the opening duration. When C3 ≤ C0 < C4, the third preset valve opening K3 is set as the initial valve opening, and the third preset opening duration T3 is set as the opening duration. When C4≤C0, the fourth preset valve opening K4 is set as the initial valve opening, and the fourth preset opening time T4 is set as the opening time.

[0083] It is understood that the opening and duration of the sludge discharge valve are dynamically adjusted based on the real-time sedimentation volume. By comparing the real-time sedimentation volume with the preset sedimentation volume, automated sludge discharge control is achieved, ensuring the effective sedimentation and timely removal of coagulants. This prevents over- or under-discharge, improves clarifier discharge efficiency, reduces coagulant residue, and maintains the normal operation of the clarifier and the stability of the water treatment system. Furthermore, by adjusting the settings based on changes in real-time sedimentation volume, it can adapt to changes in coagulant production under different treatment conditions, improving the flexibility and adaptability of sludge discharge.

[0084] In some embodiments of the present application, step S400 obtains the pressure change rate of the pressure sensor, corrects the initial valve opening based on the pressure change rate, and completes mud discharge with the corrected valve opening. This includes presetting a first preset change rate P1, a second preset change rate P2, a third preset change rate P3, and a fourth preset change rate P4, where P1 < P2 < P3 < P4. The initial valve opening Ki is corrected based on the relationship between the pressure change rate P0 and each of the preset change rates to obtain the corrected valve opening.

[0085] Specifically, a first preset correction coefficient B1, a second preset correction coefficient B2, a third preset correction coefficient B3, and a fourth preset correction coefficient B4 are pre-set, and B1<B2<B3<B4. When P1≤P0<P2, the fourth preset correction coefficient B4 is selected to correct the initial valve opening Ki, and the corrected valve opening Ki*B4 is obtained. When P2≤P0<P3, the third preset correction coefficient B3 is selected to correct the initial valve opening Ki, and the corrected valve opening Ki*B3 is obtained. When P3≤P0<P4, the second preset correction coefficient B2 is selected to correct the initial valve opening Ki, and the corrected valve opening Ki*B2 is obtained. When P4≤P0, the first preset correction coefficient B1 is selected to correct the initial valve opening Ki, and the corrected valve opening Ki*B1 is obtained.

[0086] As you can see, by comparing the rate of pressure change with a preset rate, the valve opening is automatically corrected to accommodate pressure fluctuations. This corrected valve opening allows for more accurate control of the sludge removal process, ensuring effective and stable sludge removal. Furthermore, by making corrections based on the real-time rate of pressure change, the system can promptly respond to changes in system pressure, maintaining the stability and reliability of sludge removal operations. This effectively reduces errors and instabilities during the sludge removal process, improving both accuracy and efficiency.

[0087] In the above-described embodiment, by measuring the amount of water to be clarified in the clarifier and adding an appropriate amount of flocculant based on this amount, the coagulation and aggregation of suspended solids are effectively promoted. By setting the initial operating speed of the agitator and adjusting it based on real-time data, the agitation process can be effectively controlled, ensuring sufficient mixing of the suspended solids and the flocculant, thereby improving the clarification effect. After agitation is completed, a pressure sensor monitors the amount of large coagulant particles that have settled in real time. Based on the real-time amount of settled solids, the initial opening and opening duration of the sludge discharge valve are adjusted to ensure precise control of the sludge discharge operation based on actual conditions. Furthermore, the initial opening is corrected using the pressure change rate to further optimize the sludge discharge effect. This achieves automated and precise control of continuous sludge discharge. The coagulation and aggregation of suspended solids are improved, enhancing the clarification effect and reducing the increase in effluent turbidity. Furthermore, precise sludge discharge control avoids excessive sludge discharge and waste of water resources. This more stable and reliable control of the agitation and sludge discharge process reduces equipment damage and repair work, lowering maintenance costs and the need for manual intervention.

[0088] In another preferred embodiment based on the above embodiment, referring to FIG2 , this embodiment provides a continuous mud discharge system for a clarifier based on mechanical stirring, comprising:

[0089] An adding module is used to obtain the amount of water to be clarified in the clarifier, and add flocculant to the clarifier according to the amount of water to be clarified;

[0090] a stirring module, configured to set an initial operating speed of the stirrer according to the amount of flocculant added, obtain real-time data in the clarifier, adjust the initial operating speed according to the real-time data, and complete stirring at the adjusted operating speed;

[0091] The mud discharge module is used to obtain the real-time precipitation amount of large particles of condensate through a pressure sensor after a period of rest, and set the initial valve opening and opening time of the mud discharge valve according to the real-time precipitation amount;

[0092] The correction module is used to obtain the pressure change rate of the pressure sensor, correct the initial valve opening according to the pressure change rate, and complete mud discharge with the corrected valve opening.

[0093] It is understandable that the above-mentioned continuous sludge discharge method and system for the clarifier based on mechanical agitation have the same beneficial effects, which will not be described in detail here.

[0094] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] This application is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the application. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more blocks in the block diagram.

[0096] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for continuous sludge discharge from a clarifier based on mechanical stirring, characterized in that: include: Obtaining the amount of water to be clarified in the clarification tank, and adding flocculant to the clarification tank according to the amount of water to be clarified; The initial operating speed of the agitator is set according to the amount of flocculant added, real-time data in the clarifier is obtained, the initial operating speed is adjusted according to the real-time data, and the agitation is completed at the adjusted operating speed; After a period of rest, the real-time precipitation amount of large-particle condensate is obtained through a pressure sensor, and the initial valve opening and opening time of the mud discharge valve are set according to the real-time precipitation amount; The pressure change rate of the pressure sensor is obtained, and the initial valve opening is corrected according to the pressure change rate, so as to complete the mud discharge with the corrected valve opening.

2. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 1, characterized in that: The step of obtaining the amount of water to be clarified in the clarification tank and adding a flocculant to the clarification tank according to the amount of water to be clarified comprises: A first preset water volume L1, a second preset water volume L2, a third preset water volume L3 and a fourth preset water volume L4 are preset in advance, and L1<L2<L3<L4; A first preset addition amount J1, a second preset addition amount J2, a third preset addition amount J3 and a fourth preset addition amount J4 are preset in advance, and J1<J2<J3<J4; According to the relationship between the amount of water to be clarified L0 and each preset water amount, a preset addition amount is selected as the addition amount of the flocculant; When L1≤L0<L2, the first preset addition amount J1 is selected as the addition amount of the flocculant; When L2≤L0<L3, the second preset addition amount J2 is selected as the addition amount of the flocculant; When L3≤L0<L4, the third preset addition amount J3 is selected as the addition amount of the flocculant; When L4≤L0, the fourth preset addition amount J4 is selected as the addition amount of the flocculant.

3. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 1, characterized in that: Acquiring real-time data in the clarifier, adjusting the initial operating speed according to the real-time data, and completing stirring at the adjusted operating speed, including: Obtaining a real-time flow rate S0 of the mixture in the clarification tank, presetting a first preset flow rate S1, a second preset flow rate S2, a third preset flow rate S3 and a fourth preset flow rate S4, and S1<S2<S3<S4; A first preset adjustment coefficient A1, a second preset adjustment coefficient A2, a third preset adjustment coefficient A3 and a fourth preset adjustment coefficient A4 are preset, and A1<A2<A3<A4; According to the magnitude relationship between the real-time flow rate S0 and each preset flow rate, an adjustment coefficient is selected to adjust the initial operating speed V0 to obtain an adjusted operating speed; When S1≤S0<S2, the fourth preset adjustment coefficient A4 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A4; When S2≤S0<S3, the third preset adjustment coefficient A3 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A3; When S3≤S0<S4, the second preset adjustment coefficient A2 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A2; When S4≤S0, the first preset adjustment coefficient A1 is selected to adjust the initial operating speed V0 to obtain the adjusted operating speed V0*A1.

4. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 3, characterized in that: After selecting the i-th preset adjustment coefficient Ai to adjust the initial operating speed V0 and obtaining the adjusted operating speed V0*Ai, adjusting the initial operating speed according to the real-time data to complete stirring at the adjusted operating speed also includes: Obtaining the real-time temperature W0 in the clarification tank, presetting a first preset temperature W1, a second preset temperature W2, a third preset temperature W3 and a fourth preset temperature W4, and W1<W2<W3<W4; A preset adjustment coefficient is selected according to the magnitude relationship between the real-time temperature WO and each preset temperature to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed.

5. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 4, characterized in that: According to the magnitude relationship between the real-time temperature WO and each preset temperature, a preset adjustment coefficient is selected to perform secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed, including: When W1≤W0<W2, the fourth preset adjustment coefficient A4 is selected to perform secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed V0*Ai*A4; When W2≤W0<W3, the third preset adjustment coefficient A3 is selected to perform secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed V0*Ai*A3; When W3≤W0<W4, the second preset adjustment coefficient A2 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed V0*Ai*A2; When W4≤W0, the first preset adjustment coefficient A1 is selected to perform a secondary adjustment on the adjusted operating speed V0*Ai to obtain the secondary adjusted operating speed V0*Ai*A1.

6. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 1, characterized in that: The real-time precipitation amount of large-particle condensate is obtained by a pressure sensor, and the initial valve opening and opening time of the mud discharge valve are set according to the real-time precipitation amount, including: A first preset sedimentation amount C1, a second preset sedimentation amount C2, a third preset sedimentation amount C3 and a fourth preset sedimentation amount C4 are preset in advance, and C1<C2<C3<C4; The initial valve opening and opening duration of the mud discharge valve are set according to the relationship between the real-time sedimentation amount C0 and each preset sedimentation amount.

7. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 6, characterized in that: According to the relationship between the real-time sedimentation amount C0 and each preset sedimentation amount, the initial valve opening and opening time of the mud discharge valve are set, including: A first preset valve opening K1, a second preset valve opening K2, a third preset valve opening K3, and a fourth preset valve opening K4 are preset in advance, and K1<K2<K3<K4; Preset a first preset opening time length T1, a second preset opening time length T2, a third preset opening time length T3 and a fourth preset opening time length T4, and T1<T2<T3<T4; When C1≤C0<C2, the first preset valve opening K1 is set as the initial valve opening, and the first preset opening time T1 is set as the opening time; When C2≤C0<C3, the second preset valve opening K2 is set as the initial valve opening, and the second preset opening time T2 is set as the opening time; When C3≤C0<C4, the third preset valve opening K3 is set as the initial valve opening, and the third preset opening time T3 is set as the opening time; When C4≤C0, the fourth preset valve opening K4 is set as the initial valve opening, and the fourth preset opening time T4 is set as the opening time.

8. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 7, characterized in that: Acquiring the pressure change rate of the pressure sensor, correcting the initial valve opening according to the pressure change rate, and completing mud discharge with the corrected valve opening, including: A first preset change rate P1, a second preset change rate P2, a third preset change rate P3 and a fourth preset change rate P4 are preset, and P1<P2<P3<P4; The initial valve opening Ki is corrected according to the magnitude relationship between the pressure change rate P0 and each preset change rate to obtain a corrected valve opening.

9. The method for continuous mud discharge from a clarifier based on mechanical agitation according to claim 8, characterized in that: The initial valve opening Ki is corrected according to the magnitude relationship between the pressure change rate P0 and each preset change rate to obtain the corrected valve opening, including: A first preset correction coefficient B1, a second preset correction coefficient B2, a third preset correction coefficient B3 and a fourth preset correction coefficient B4 are preset, and B1<B2<B3<B4; When P1≤P0<P2, the fourth preset correction coefficient B4 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B4; When P2≤P0<P3, the third preset correction coefficient B3 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B3; When P3≤P0<P4, the second preset correction coefficient B2 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B2; When P4≤P0, the first preset correction coefficient B1 is selected to correct the initial valve opening Ki to obtain the corrected valve opening Ki*B1.

10. A continuous mud discharge system for a clarifier based on mechanical stirring, characterized in that: include: An adding module is used to obtain the amount of water to be clarified in the clarification tank, and add flocculant to the clarification tank according to the amount of water to be clarified; A stirring module, used to set the initial operating speed of the stirrer according to the amount of flocculant added, obtain real-time data in the clarifier, adjust the initial operating speed according to the real-time data, and complete stirring at the adjusted operating speed; The mud discharge module is used to obtain the real-time precipitation amount of large-particle condensate through a pressure sensor after a period of rest, and set the initial valve opening and opening time of the mud discharge valve according to the real-time precipitation amount; The correction module is used to obtain the pressure change rate of the pressure sensor, correct the initial valve opening according to the pressure change rate, and complete the mud discharge with the corrected valve opening.

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