Multi-mode integrated water purifying device

Abstract

The invention discloses a multi-mode integrated water purifying device which comprises a tank body, the tank body comprises a medicament adding unit, a magnetic powder control unit, a coagulation unit, a flocculation unit, a precipitation unit, a water inlet unit, a water outlet unit, a sludge backflow unit and an operation control unit, and the medicament adding unit comprises a PAM medicament dissolving tank and a PAC medicament dissolving tank. The PAM medicament dissolving tank is connected with the flocculation unit through a PAM adding pump, the water inlet unit and the PAC medicament dissolving tank are both connected with the coagulation unit, the coagulation unit is connected with the flocculation unit through a bottom pipeline, and the flocculation unit is connected with the precipitation unit through a baffling groove. According to the invention, the traditional coagulating sedimentation, high-density sedimentation and magnetic coagulating sedimentation processes are integrated into a whole and combined to form the water purification device with multiple operation modes, the water purification device can quickly respond to the change of conditions such as water quantity and water quality in actual engineering application, the operation modes of the water purification device can be quickly adjusted according to different sewage characteristics, and related pollutants can be efficiently and stably removed.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a multi-mode integrated water purification device. Background Technique

[0002] Coagulation sedimentation technology is a physical and chemical treatment method often used in sewage purification. By adding coagulants and flocculants to sewage, they react with substances such as sediment, colloids, and organic matter particles in the sewage to achieve functions such as electro-neutralization, adsorption, and bridging, forming larger flocculent or agglomerated structures, and realizing the purification of sewage through sedimentation separation. Since this technology can quickly reduce the turbidity and chromaticity of sewage, and at the same time can also remove some suspended solids, COD, nitrogen and phosphorus and other water body nutrients, it is widely used in the field of sewage treatment.

[0003] During the engineering application process of coagulation sedimentation technology, various technologies have been developed according to different needs, such as high-density sedimentation, sand-added coagulation sedimentation, and magnetic coagulation sedimentation. In actual sewage treatment engineering cases, the physical and chemical treatment of advanced treatment technology is based on indicators such as engineering water volume, pollution load, and discharge standards for process selection and design. Most of them only adopt one of the traditional coagulation sedimentation, high-density sedimentation, magnetic coagulation sedimentation, or sand-added coagulation sedimentation processes. The types of coagulation sedimentation technology applied are relatively single, which leads to the problem of low flexibility and self-adaptability of the system. For example, when the influent volume exceeds the designed treatment capacity of the system, the equipped coagulation sedimentation process will be in an overloaded operation state, resulting in a reduction in purification efficiency and affecting the effluent quality; when the influent water quality changes or the discharge standard is improved, the equipped coagulation sedimentation also has the situation of overloaded operation or insufficient treatment capacity, and it is impossible to achieve up-to-standard discharge. Since it is difficult for a single coagulation sedimentation technology to solve the above problems, and the adjustment and optimization of the sewage treatment system in actual operation have hysteresis and cannot cope with the changes in water quality and water volume that may occur at any time, there is a need for a coagulation sedimentation device that simultaneously has multiple treatment operation modes, which can flexibly meet the requirements of sewage treatment under various production conditions. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a multi-mode integrated water purification device to solve the technical problems mentioned in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solutions: A multi-mode integrated water purification device, including a tank body, which includes a chemical dosing unit, a magnetic powder control unit, a coagulation unit, a flocculation unit, a sedimentation unit, an inlet unit, an outlet unit, a sludge return unit and an operation control unit. The chemical dosing unit includes a PAM chemical dissolution tank and a PAC chemical dissolution tank. The PAM chemical dissolution tank is connected to the flocculation unit through a PAM dosing pump. Both the inlet unit and the PAC chemical dissolution tank are connected to the coagulation unit. The coagulation unit is connected to the flocculation unit through a bottom pipeline. The flocculation unit is connected to the sedimentation unit through a baffle tank.

[0006] Furthermore, it also includes a pipe mixer. The inlet unit is connected to the inlet end of the pipe mixer through a pipeline. The PAC chemical dissolution tank is connected to the inlet end of the pipe mixer through a PAC dosing pump. The pipe mixer is provided with baffle plates, and the outlet end of the pipe mixer is connected above the coagulation unit.

[0007] Preferably, the inlet unit includes an inlet pipe and three groups of sewage pumps connected to the inlet pipe. The outlet ends of the three groups of sewage pumps are all connected to the inlet end of the pipe mixer through pipelines.

[0008] Furthermore, the sedimentation unit is located at the bottom of the baffle tank. It includes an inclined tube sedimentation area, a sludge hopper and an overflow weir. The muddy water is separated through the inclined tube sedimentation area, and the purified water flows out from the outlet unit through the overflow weir, while the sludge settles in the sludge hopper. The sludge hopper is connected to the flocculation unit and the magnetic powder control unit respectively through the sludge return unit.

[0009] Preferably, the sludge return unit includes two groups of sludge pumps and a sludge return pipe. An electromagnetic flowmeter is provided in the sludge return pipe.

[0010] Furthermore, the operation control unit is electrically connected to the inlet unit, the PAM dosing pump, the PAC dosing pump, the sludge pump and the electromagnetic flowmeter respectively.

[0011] In summary, the present invention mainly has the following beneficial effects:

[0012] The present invention integrates multiple technologies such as traditional coagulation sedimentation, high-density sedimentation and magnetic coagulation sedimentation, reducing the required site space. The integrated structure design is convenient for transportation and movement. The three coagulation sedimentation processes improve the adaptability and flexibility of the device, and can flexibly select the coagulation sedimentation process in the advanced treatment according to the actual engineering needs, realizing stable and efficient operation under different water quality and water volume conditions. The actual operation parameters of the device are determined according to the actual project, forming a multi-mode integrated device with characteristics such as strong adaptability, flexible operation, compact integration, energy saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Structural schematic diagram of the present invention;

[0014] Figure 2 is Figure 1 Structural schematic diagram in the A-A direction in Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0016] Next, according to the overall structure of the present invention, its embodiments will be described.

[0017] As Figure 1 , Figure 2 shown, the present invention includes a tank body, and the tank body includes a chemical dosing unit, a magnetic powder control unit, a coagulation unit, a flocculation unit, a sedimentation unit, an inlet unit, an outlet unit, a sludge return unit, and an operation control unit 20. Among them, the magnetic powder control unit is a magnetic powder dosing device 7, the coagulation unit is a coagulation tank 10 and a coagulation tank stirrer 9 installed above the coagulation tank 10. The magnetic powder dosing device 7 is also installed above the coagulation tank 10. The flocculation unit is a flocculation tank 12 and a flocculation tank stirrer 11 installed above the flocculation tank 12. The inlet unit is an inlet pipe 19 and a sewage pump 18 connected to the inlet pipe 19. The outlet unit is an outlet pipe 16. The sludge return unit is two groups of sludge pumps 17. The chemical dosing unit includes a PAM chemical dissolution tank 1 and a PAC chemical dissolution tank 4. The PAM chemical dissolution tank 1 is connected to the flocculation tank 12 through a PAM dosing pump 3. A PAM stirrer 2 is installed on the PAM chemical dissolution tank 1. A PAC stirrer 5 is installed on the PAC chemical dissolution tank 4. The bottom of the coagulation tank 10 is connected to the flocculation tank 12 through a bottom pipe. An overflow port 13 is provided at the upper part of the flocculation tank 12, and it flows to the baffle tank 14 through the overflow port 13. The baffle tank 14 is connected to the sedimentation unit.

[0018] The present invention also includes a pipe mixer 8. The sewage pump 18 includes three groups of sewage pumps 18. The inlet ends of the three groups of sewage pumps 18 are all connected to the inlet pipe 19, and the outlet ends are all connected to the inlet end of the pipe mixer 8 through pipes. The PAC chemical dissolution tank 4 is connected to the inlet end of the pipe mixer 8 through a PAC dosing pump 6. The pipe mixer 8 is provided with a baffle plate to prevent backflow. The outlet end of the pipe mixer 8 is connected above the coagulation tank 10 through a pipe. The function of the pipe mixer 8 is to mix the PAC chemical with the sewage and then flow into the coagulation tank 10.

[0019] The precipitation unit includes an inclined tube precipitation area 21, a sludge hopper 22, and an overflow weir 15. The muddy water is separated through the inclined tube precipitation area 21. The purified water flows out of the purification device through the overflow weir 15 and the outlet pipe 16, while the sludge precipitates in the sludge hopper 22. The sludge hopper 22 is connected to the flocculation tank 12 and the magnetic powder dosing device 7 respectively through two groups of sludge pumps 17 and sludge return pipes, and an electromagnetic flowmeter is provided in the sludge return pipe.

[0020] The operation control unit 20 is electrically connected to the sewage pump 18, the PAM dosing pump 3, the PAC dosing pump 6, the sludge pump 17, and the electromagnetic flowmeter respectively.

[0021] The working principle of the present invention:

[0022] The present invention includes three technologies: traditional coagulation precipitation, high-density precipitation, and magnetic coagulation precipitation. The common points of the three coagulation precipitation technologies are organically combined into a sewage purification treatment device.

[0023] When operating in the low-load mode (traditional coagulation precipitation method), start a group of sewage pumps 18. The coagulant tank adds PAC (polyaluminum chloride) to be mixed with the sewage in the pipeline mixer 8 first, and then enters the coagulation tank 10 through the pipeline. The sewage and PAC are mixed and reacted under the action of the coagulation tank stirrer 9, and then are connected to the flocculation tank 12 through the bottom pipeline. At the same time, PAM is added from the top of the flocculation tank 12 and mixed and reacted under the action of the flocculation tank stirrer 11. The rotation speed of the stirrer in the coagulation tank 10 is greater than that of the stirrer in the flocculation tank 12 to stabilize the formation of flocs. It can be divided into a rapid coagulation and stirring reaction tank and a slow-speed upflow flocculation reaction tank according to the function. The sewage enters the baffle tank 14 from the top overflow port of the flocculation tank 12, stabilizes and then flows into the precipitation area. The inclined tube sedimentation tank 21 separates the muddy water, and the sludge enters the sludge hopper 22 to gather. The purified water flows out of the system through the overflow weir 15 and the outlet pipe 16.

[0024] When operating in the medium-load mode (high-density precipitation method) process, an additional group of sewage pumps 18 and a group of sludge pumps 17 are started on the basis of the low-load mode. The sludge in the sludge hopper 22 is transported to the coagulation tank 10, and the flow rate of the returned sludge is regulated by the flowmeter. By increasing the concentration of flocs in the coagulation tank 10, the sludge is used as an effective floc nucleus in the coagulation tank 10, and then aggregates into large and heavy floc particles, enhancing the efficiency of flocculation and precipitation, and making full use of the theories of dynamic coagulation, accelerated flocculation, and shallow tank precipitation. The three processes of coagulation, enhanced flocculation, and inclined tube precipitation are combined to quickly remove pollutants.

[0025] When operating in the high-load mode (magnetic coagulation sedimentation method), on the basis of the medium-load mode, the device starts three groups of sewage pumps and two groups of sludge pumps. At the same time, the magnetic powder dosing and recovery device and the sludge conveying device are started. The magnetic powder dosing device adds magnetic powder to the reaction tank, the conveying device returns the sludge to the reaction tank, and the excess sludge is sent to the magnetic powder recovery device and then re-added to the reaction tank. At this time, the magnetic powder in the coagulation tank can provide more flocculation nuclei and can adhere to the surface of sludge particles, strengthening the coagulation and flocculation effects, making the generated flocs denser and more stable, and improving the sedimentation rate.

[0026] The operation control unit 20 includes manually or automatically controlling the operation of the device, including process switching, operation adjustment of each device, operation detection and early warning functions.

[0027] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and are not limitations on the invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can, without departing from the principles and purposes of the present invention, make modifications, substitutions and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A multi-mode integrated water purification device, characterized in that, It includes a tank body, and the tank body includes a chemical dosing unit, a magnetic powder control unit, a coagulation unit, a flocculation unit, a sedimentation unit, a water inlet unit, a water outlet unit, a sludge return unit and an operation control unit. The chemical dosing unit includes a PAM chemical dissolution tank and a PAC chemical dissolution tank. The PAM chemical dissolution tank is connected to the flocculation unit through a PAM dosing pump. The water inlet unit and the PAC chemical dissolution tank are both connected to the coagulation unit. The coagulation unit is connected to the flocculation unit through a bottom pipeline. The flocculation unit is connected to the sedimentation unit through a baffle trough.

2. The multi-mode integrated water purification device according to claim 1, wherein: It also includes a pipe mixer. The water inlet unit is connected to the water inlet end of the pipe mixer through a pipeline. The PAC chemical dissolution tank is connected to the water inlet end of the pipe mixer through a PAC dosing pump. The pipe mixer is provided with baffle plates, and the water outlet end of the pipe mixer is connected above the coagulation unit.

3. The multi-mode integrated water purification device according to claim 2, characterized in that: The water inlet unit includes a water inlet pipe and three groups of sewage pumps connected to the water inlet pipe. The water outlet ends of the three groups of sewage pumps are all connected to the water inlet end of the pipe mixer through pipelines.

4. The multi-mode integrated water purification device according to claim 1, wherein: The sedimentation unit is located at the bottom of the baffle trough and includes an inclined tube sedimentation area, a sludge hopper and an overflow weir. The sludge and water are separated through the inclined tube sedimentation area. The purified water flows out from the water outlet unit through the overflow weir, and the sludge precipitates in the sludge hopper. The sludge hopper is connected to the flocculation unit and the magnetic powder control unit respectively through the sludge return unit.

5. The multi-mode integrated water purification device according to claim 4, characterized in that: The sludge return unit includes two groups of sludge pumps and a sludge return pipe. An electromagnetic flowmeter is provided in the sludge return pipe.

6. The multi-mode integrated water purification device according to claim 1, characterized in that: The operation control unit is electrically connected to the water inlet unit, the PAM dosing pump, the PAC dosing pump, the sludge pump and the electromagnetic flowmeter respectively.

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