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CN-122006558-A - Mixed treatment equipment for precise dosing of sewage and control method

CN122006558ACN 122006558 ACN122006558 ACN 122006558ACN-122006558-A

Abstract

The application provides a mixed treatment device and a control method for precisely adding a chemical into sewage, wherein the mixed treatment device comprises a chemical adding module, an online detection module, a mixing strengthening module and a circulation control module, wherein the chemical adding module is used for adding the chemical into a sewage pipeline, the online detection module comprises a first online detection module and a second online detection module, the first online detection module is arranged at the upstream of the chemical adding module and is used for detecting water quality parameters of the sewage in real time, the second online detection module is arranged at the downstream of the chemical adding module and is used for detecting the water quality parameters of the sewage after chemical adding in real time, the mixing strengthening module is arranged between the chemical adding module and the second online detection module and is used for promoting the mixing of the chemical and the sewage, and the circulation control module is in communication connection with the online detection module and is used for judging a treatment result according to the water quality parameters and enabling the sewage to flow back to the upstream of the chemical adding module for retreatment when the result does not reach standards.

Inventors

  • WANG MINGLU
  • ZHANG YUKAI

Assignees

  • 青岛双瑞海洋环境工程股份有限公司

Dates

Publication Date
20260512
Application Date
20260213

Claims (10)

  1. 1. The utility model provides a sewage precision dosing's mixed treatment equipment which characterized in that includes: A dosing module (1), the dosing module (1) being in communication with the sewer line (100) for dosing a dosing agent into the sewer line (100); The online detection module (2) comprises a first online detection module (21) and a second online detection module (22), wherein the first online detection module (21) is arranged at the upstream of the dosing module (1) and is used for detecting the water quality parameter of the sewage in real time, and the second online detection module (22) is arranged at the downstream of the dosing module (1) and is used for detecting the water quality parameter of the sewage after dosing in real time; the mixing reinforcement module (3) is arranged between the dosing module (1) and the second online detection module (22) and is used for promoting the mixing of the medicament and the sewage; and the circulation control module (4) is in communication connection with the online detection module (2) and is used for judging a treatment result according to the water quality parameter and enabling sewage to flow back to the upstream of the dosing module (1) for reprocessing when the result does not reach the standard.
  2. 2. The sewage precise dosing mixing treatment device according to claim 1, wherein the dosing module (1) comprises a medicament storage tank (11) and a dosing pipeline (12), the medicament storage tank (11) and the dosing pipeline (12) are communicated through a pipeline, the medicament storage tank (11) is used for storing medicaments, and the dosing pipeline (12) is used for delivering the medicaments in the medicament storage tank (11) into the sewage pipeline (100).
  3. 3. The sewage precise dosing mixing treatment device according to claim 2, wherein the dosing pipeline (12) comprises a main dosing pipeline (121) and a standby dosing pipeline (122), a main dosing pump (1210) is arranged in the main dosing pipeline (121), the main dosing pump (1210) is used for driving the medicament in the medicament storage tank (11) to enter the sewage pipeline (100) through the main dosing pipeline (121), a standby dosing pump (1220) is arranged in the standby dosing pipeline (122), and the standby dosing pump (1220) is used for driving the medicament in the medicament storage tank (11) to enter the sewage pipeline (100) through the standby dosing pipeline (122).
  4. 4. A sewage precise dosing mixing treatment device according to claim 3, wherein the main dosing pump (1210) and the standby dosing pump (1220) are driven by a servo motor, and the flow control precision is +/-0.5%.
  5. 5. The sewage precision dosing mixing treatment device according to claim 1, characterized in that the on-line detection module (2) comprises a multi-parameter water quality sensor for detecting in real time pH, turbidity, ORP, conductivity and flow parameters of the sewage and transmitting the parameters to the circulation control module (4).
  6. 6. The mixing treatment equipment for precisely dosing sewage according to claim 1, wherein the mixing strengthening module (3) is a mixer, the mixer comprises a vortex mixing unit (31) and an ultrasonic cavitation unit (32), the vortex mixing unit (31) is used for enabling sewage and a medicament to form vortex swirl so as to realize rapid mixing of the medicament and the sewage, and the ultrasonic cavitation unit (32) is used for smashing and dispersing the medicament so as to realize deep mixing of the medicament and the sewage.
  7. 7. The sewage precise dosing mixing treatment device according to claim 6, wherein the vortex mixing unit (31) comprises a multistage vortex blade, the inclination angle of the vortex blade is 45 degrees, and the working frequency of the ultrasonic cavitation unit (32) is 20-40 khz.
  8. 8. The sewage precise dosing mixing treatment device according to claim 1, wherein the circulation control module (4) comprises a circulation pipeline (41), one end of the circulation pipeline (41) is communicated with the upstream of the dosing module (1), the other end of the circulation pipeline is communicated with the downstream of the online detection module (2), and a circulation pump (42) and a circulation valve (43) for switching the flow direction of fluid are arranged on the circulation pipeline (41).
  9. 9. The sewage precise dosing mixing treatment device according to claim 1, wherein the dosing module (1), the online detection module (2) and the mixing reinforcement module (3) are all of modular design and are connected through quick-mounting flanges.
  10. 10. A control method for the sewage precise dosing mixing treatment apparatus according to any one of claims 1 to 9, characterized in that the control method comprises the steps of: s1, starting a system and executing S2; s2, the first online detection module (21) collects the flow Q and the water quality parameters of the sewage S3, executing; s3, calculating initial drug adding amount by the circulation control module (4) S4, executing; S4, the dosing module (1) is used for dosing according to the initial dosing amount Adding medicine, wherein the circulation control module (4) starts the mixing strengthening module (3) and is used for carrying out mixing treatment on sewage and a medicine and executing S5; s5, the second online detection module (22) collects the sewage quality parameters after the mixed treatment And the water quality parameter is used for Transmitting to a circulation control module (4), and executing S6; S6, the circulation control module (4) is used for judging whether the C 1 reaches a preset water quality standard or not, if so, the S7 is executed, and if not, the S8 is executed; S7, controlling an outlet valve (101) of the sewage pipeline (100) to be opened, closing the circulation valve (43) to discharge sewage in the sewage pipeline (100), and executing S15; s8, the circulation control module (4) calculates the adding quantity delta D of the supplementary medicament, sends a secondary medicament adding instruction to the medicament adding module (1), controls the mixing strengthening module (3) to keep running, mixes the sewage after secondary medicament adding, and executes S9; S9, the second online detection module (22) collects the sewage quality parameters after secondary mixing And the water quality parameter is used for Transmitting to a circulation control module (4), and executing S10; s10, the circulation control module (4) is used for judging If the water quality reaches the preset water quality standard, executing S7, and if not, executing S11; s11, the circulation control module (4) counts the circulation times, n=n+1, and S12 is executed; S12, the circulation control module (4) judges whether n is more than or equal to 3, if yes, S13 is executed, and if not, S14 is executed; S13, the circulation control module (4) starts an alarm, controls the main dosing pipeline (121) to stop running, switches to the standby dosing pipeline (122), and executes S15; s14, controlling an outlet valve (101) of the sewage pipeline (100) to be closed, opening a circulation valve (43), conveying sewage downstream of the online detection module (2) to the upstream of the dosing module (1) through the circulation pipeline (41), and executing S3; And S15, ending the flow.

Description

Mixed treatment equipment for precise dosing of sewage and control method Technical Field The invention relates to the technical field of sewage treatment, in particular to a mixed treatment device for precise dosing of sewage and a control method. Background In the sewage treatment process, the accurate adding of chemical agents and the efficient mixing of the agents and sewage are the core links of guaranteeing the treatment effect and reducing the operation cost, the traditional sewage treatment and dosing mixing equipment mainly surrounds the structural optimization of a dosing device, the improvement of a mixing mode and the improvement of control accuracy, but has the technical defects that firstly, the mixing efficiency is low, the traditional equipment mainly relies on mechanical stirring or natural turbulence to realize the mixing of the agents and the sewage, the mixing time is long, the energy consumption is high, the mechanical stirring is easily limited by the rotating speed and the flow state of blades, is sensitive to the concentration of suspended matters and easily causes the blockage of a flow channel, secondly, the dosing accuracy is insufficient, most of equipment adopts a mode of controlling the dosing amount in a mode of controlling the liquid level or simply adjusting the proportion, a real-time water quality feedback mechanism is lacked, the influence of fluctuation of the concentration of the agents is easily caused, the medicine is wasted or insufficient in dosing, the solid agent pre-dissolution process is easy to cause the problem of precipitation, thirdly, the closed-loop control mechanism is lacked, part of equipment is provided with simple feedback adjustment, the dynamic adjustment of the dosing amount and the mixing strength is not realized, the excessive pollution is easy to be caused, the linkage treatment of the pollution is easy, the traditional equipment is difficult to be subjected to the maintenance and the integrated design, and the maintenance efficiency is greatly reduced due to the fact that the traditional equipment is poor in the mixing efficiency is subjected to the operation and the maintenance is easy. In order to solve the problem of insufficient dosing precision, patent CN111320246A discloses an intelligent accurate dosing control system for a coagulant based on multivariable control, which collects multidimensional water quality and water quantity parameters by setting a feedforward unit and a feedback unit, establishes a multivariable control mathematical model by using an operation center to calculate the optimal dosing amount of the reagent, realizes intelligent adjustment of the dosing amount of the reagent, and solves the problems of inaccurate dosing, large reagent consumption and high cost of the traditional reagent to a certain extent. The control system is only focused on calculation and control of the dosing amount of the medicament, is not optimized for the mixing efficiency of the medicament and the sewage, still depends on a traditional mixing mode, has the defects of long mixing time and high energy consumption, is not provided with a circulation treatment mechanism of the out-of-standard sewage, is not capable of realizing dynamic linkage of the dosing amount and the mixing intensity, cannot fundamentally solve the problem of poor sewage treatment effect caused by insufficient mixing, is not convenient to operate and maintain, is lack of a modularized quick-assembly structural design, and is difficult to meet the integrated requirement of precise dosing and efficient mixing in the sewage treatment process. Aiming at the problems in the prior art, the development of a sewage precise dosing and mixing treatment device integrating precise dosing, multi-parameter online detection, efficient mixing reinforcement and closed loop circulation control into a whole is needed to realize intelligent linkage of dosing, detection, mixing and circulation, improve dosing precision and mixing efficiency, reduce energy consumption and operation and maintenance cost and meet the actual demands of sewage treatment. Disclosure of Invention In view of the above, the invention aims to provide a sewage precise dosing mixing treatment device and a control method, one of the problems of the sewage treatment dosing mixing device in the prior art is low in mixing efficiency, insufficient in dosing precision and lack of a closed-loop control mechanism, and the other problem of the sewage treatment dosing mixing device in the prior art is poor in structural maintainability. In order to achieve the above purpose, the technical scheme of the invention is realized as follows: a mixing treatment device for precise dosing of sewage, comprising: the dosing module is communicated with the sewage pipeline and is used for adding a medicament into the sewage pipeline; The online detection module comprises a first online detection module and a second online detection module, wherei