A sewage treatment tank with uniform coagulant feeding

Abstract

The utility model relates to sewage treatment technical field, specifically disclose a sewage treatment coagulant putting even's sewage treatment tank, including bottom plate, the upper end surface fixed mounting of bottom plate has reagent tank, reagent tank one side is provided with the treatment tank fixed mounting on the upper end surface of bottom plate through the support leg, the outside wall of reagent tank is provided with metering pump, the input of metering pump is through pipeline with reagent tank inside intercommunication, and the output end is connected with the dosing pipe of extending to the treatment tank in, the inside top of treatment tank is fixedly installed with annular dosing pipe, the tail end of dosing pipe is connected with annular dosing pipe, be equipped with rotary mixing mechanism in the treatment tank, can real -time monitoring sewage flow and turbidity, and according to the accurate dosing of sewage mixing degree, reduce reagent waste, reduce sewage treatment cost, and improve the mixing effect of reagent and sewage, promote coagulation reaction, improve sewage treatment quality.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and specifically discloses a wastewater treatment tank for uniformly dispensing wastewater treatment coagulant. Background Technology

[0002] Coagulants are used to treat fine suspended solids and colloidal particles in wastewater that are difficult to remove by natural sedimentation. Adding coagulants to wastewater can reduce turbidity and color, and remove certain heavy metals, radioactive substances, and high molecular weight organic matter. Coagulants are usually added before the solid-liquid separation process. In order to improve the coagulation effect, the coagulant needs to be quickly and evenly combined with the wastewater.

[0003] Currently, in the process of treating sewage, the methods of adding chemicals into the sewage treatment tank are mostly single-point or multi-point direct addition or automatic dispersion using quantitative equipment. During the addition of chemicals, most sewage treatment tanks often rely on manual observation of water quality to adjust the dosage, which cannot respond in real time to changes in influent turbidity, resulting in waste of chemicals or substandard treatment. Therefore, this needs to be improved. Utility Model Content

[0004] This invention proposes a wastewater treatment tank for uniformly dispensing coagulants. It can monitor wastewater flow and turbidity in real time and accurately dispense coagulants based on the mixing degree of the wastewater, reducing agent waste, lowering wastewater treatment costs, improving the mixing effect of agents and wastewater, promoting coagulation reaction, and enhancing wastewater treatment quality.

[0005] This utility model is implemented as follows: a sewage treatment tank for uniformly dispensing sewage treatment coagulant includes a base plate and a drive mechanism. A reagent tank is fixedly installed on the upper surface of the base plate, and a treatment tank is provided on one side of the reagent tank and fixedly installed on the upper surface of the base plate by a support leg. A metering pump is installed on the outer wall of the reagent tank. The input end of the metering pump is connected to the inside of the reagent tank through a pipe, and the output end is connected to a dosing pipe extending into the treatment tank. An annular drug distribution tube is fixedly installed at the top of the inside of the treatment box, and the end of the drug distribution tube is connected to the annular drug distribution tube. A rotary mixing mechanism is provided inside the treatment box. The right side wall of the treatment tank is connected to a water inlet pipe. An electromagnetic flow meter and an online turbidity meter are sequentially installed on the water inlet pipe along the water flow direction. A PLC controller is fixedly installed on the outer side wall of the treatment tank. A touch screen is embedded in the outer side wall of the PLC controller and is electrically connected to the electromagnetic flow meter, the online turbidity meter and the metering pump.

[0006] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant in wastewater treatment includes a rotary mixing mechanism comprising a rotating cylinder that vertically penetrates the top of the treatment tank, the rotating cylinder being rotatably connected to the treatment tank via bearings. Two sets of first stirring rods are symmetrically fixedly installed on the lower part of the outer wall of the rotating cylinder. A conical rotating disk located below the annular drug delivery tube is fixedly installed on the outer wall of the rotating cylinder, and the conical surface of the rotating disk forms an angle of 30° to 45° with the horizontal plane. A rotating shaft is coaxially arranged inside the rotating cylinder, and multiple second stirring rods are equidistantly distributed along the axial direction on the outer wall of the rotating shaft.

[0007] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant is provided, wherein the driving mechanism includes a first bevel gear fixedly installed on the upper end of the rotating shaft and the upper end of the rotating cylinder, a motor fixedly installed on the upper surface of the treatment tank, and a second bevel gear fixedly connected to the output shaft of the motor, the second bevel gear meshing with two first bevel gears simultaneously.

[0008] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant is provided, wherein the bottom of the annular dosing pipe is provided with a plurality of atomizing nozzles evenly distributed circumferentially, and the axes of the plurality of nozzles form an angle of 15° to 30° with the vertical direction and the spray direction points towards the upper part of the conical surface of the rotating disk.

[0009] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant is provided, wherein the upper and lower ends of the rotating cylinder are mechanically sealed to the outer wall of the rotating shaft, and a limiting plate that is slidably connected to the top of the treatment tank is fixedly installed on the outer wall of the rotating cylinder.

[0010] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant is provided, wherein the lower part of the side wall of the treatment tank is connected to an outlet pipe and the bottom is connected to a drain pipe, and both the outlet pipe and the drain pipe are equipped with pneumatic butterfly valves.

[0011] As a preferred embodiment of the present invention, a wastewater treatment tank for uniformly dispensing coagulant is provided, wherein the top of the tank is connected to an inlet pipe with a sealed cap.

[0012] The beneficial effects of this utility model are: By monitoring the wastewater flow rate and turbidity in real time using electromagnetic flow meters and online turbidity meters, the PLC controller controls the metering pump to extract an appropriate amount of coagulant, achieving precise dosing, reducing waste, and lowering wastewater treatment costs.

[0013] The atomizing nozzle at the bottom of the annular dosing pipe atomizes the agent and sprays it at a certain angle onto the upper part of the cone surface of the rotating disk. In addition, the rotation of the rotating disk further disperses the agent droplets, allowing the agent to come into contact with the sewage more widely and evenly. This significantly improves the mixing effect between the agent and the sewage, promotes the coagulation reaction, and enhances the quality of sewage treatment.

[0014] The drive mechanism uses a motor and bevel gear to drive the rotating cylinder, the stirring rod on the rotating shaft, and the rotating disk to rotate in opposite directions simultaneously, which fully mixes the sewage, enhances the mixing effect, and improves the efficiency of sewage treatment. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a front sectional view of a wastewater treatment tank for uniformly dispensing coagulant according to the present invention.

[0017] Figure 2 This is a bottom view of the annular tube of this utility model.

[0018] Figure 3 This is a structural diagram of the rotating disk of this utility model.

[0019] Figure 4 This is a structural diagram of the processing box of this utility model.

[0020] The markings in the diagram are as follows: 1. Base plate; 2. Chemical tank; 201. Inlet pipe; 202. Dosing pipe; 203. Metering pump; 3. Treatment tank; 301. Outlet pipe; 302. Sewage pipe; 303. Inlet pipe; 304. Electromagnetic flow meter; 305. Online turbidity meter; 306. PLC controller; 307. Touch screen; 4. Annular distribution pipe; 401. Atomizing nozzle; 5. Rotating cylinder; 501. Limiting plate; 502. First stirring rod; 6. Rotating shaft; 601. Second stirring rod; 7. Rotary disk; 8. First bevel gear; 9. Motor; 901. Second bevel gear. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-4A sewage treatment tank for uniformly dispensing sewage treatment coagulant includes a base plate 1 and a drive mechanism. A reagent tank 2 is fixedly installed on the upper surface of the base plate 1, and a treatment tank 3 is fixedly installed on the upper surface of the base plate 1 by means of a support leg on one side of the reagent tank 2. A metering pump 203 is installed on the outer wall of the reagent tank 2. The input end of the metering pump 203 is connected to the inside of the reagent tank 2 through a pipe, and the output end is connected to a dosing pipe 202 extending into the treatment tank 3. An annular drug distribution tube 4 is fixedly installed at the top of the inside of the treatment box 3. The end of the drug dosing tube 202 is connected to the annular drug distribution tube 4. A rotary mixing mechanism is provided inside the treatment box 3. The right side wall of the treatment tank 3 is connected to an inlet pipe 303. An electromagnetic flow meter 304 and an online turbidity meter 305 are sequentially installed on the inlet pipe 303 along the water flow direction. A PLC controller 306 is fixedly installed on the outer side wall of the treatment tank 3. A touch screen 307 is embedded in the outer side wall of the PLC controller 306 and is electrically connected to the electromagnetic flow meter 304, the online turbidity meter 305 and the metering pump 203.

[0023] In this embodiment: when sewage flows into the treatment tank 3 through the inlet pipe 303, the electromagnetic flowmeter 304 on the inlet pipe 303 monitors the sewage flow rate in real time, and the online turbidity meter 305 monitors the sewage turbidity in real time. These data are transmitted to the PLC controller 306. Based on the data fed back by the electromagnetic flowmeter 304 and the online turbidity meter 305, the PLC controller 306 controls the metering pump 203 to extract an appropriate amount of coagulant from the reagent tank 2 and deliver it to the annular distribution pipe 4 through the dosing pipe 202. The atomizing nozzle 401 at the bottom of the annular distribution pipe 4 atomizes the agent and sprays it at a certain angle onto the upper part of the conical surface of the rotating disk 7 to achieve uniform dispersion of the agent so as to fully mix it with the sewage.

[0024] The rotary mixing mechanism causes the first stirring rod 502 on the rotating cylinder 5 and the conical rotating disk 7 to rotate in the opposite direction to the multiple second stirring rods 601 on the rotating shaft 6, thus stirring the sewage. The rotation of the rotating disk 7 further disperses the chemical droplets sprayed onto it, allowing the chemical droplets to come into contact with the sewage in the treatment tank 3 more widely and evenly, greatly improving the mixing effect of the chemical and the sewage.

[0025] As a technical optimization of this utility model, the rotary mixing mechanism includes a rotating cylinder 5 that runs vertically through the top of the processing box 3, and the rotating cylinder 5 is rotatably connected to the processing box 3 through a bearing. Two sets of first stirring rods 502 are symmetrically fixedly installed on the lower part of the outer side wall of the rotating cylinder 5; A conical rotating disk 7 located below the annular drug delivery tube 4 is fixedly installed on the outer wall of the rotating cylinder 5. The conical surface of the rotating disk 7 forms an angle of 30° to 45° with the horizontal plane. A rotating shaft 6 is coaxially arranged inside the rotating cylinder 5, and multiple second stirring rods 601 are equidistantly distributed along the axial direction on the outer side wall of the rotating shaft 6.

[0026] In this embodiment: when the second bevel gear 901 drives the two first bevel gears 8 to rotate, the rotating shaft 6 and the rotating cylinder 5 rotate in opposite directions at the same time, thereby causing the second stirring rod 601 installed on the rotating shaft 6 to rotate in opposite directions with the first stirring rod 502 and the conical rotating disk 7 installed on the rotating cylinder 5, so as to achieve full stirring and mixing of sewage and chemicals in the treatment tank 3.

[0027] As a technical optimization of this utility model, the drive mechanism includes a first bevel gear 8 fixedly installed on the upper end of the rotating shaft 6 and the upper end of the rotating cylinder 5, a motor 9 fixedly installed on the upper end face of the processing box 3, and a second bevel gear 901 fixedly connected to the output shaft of the motor 9. The second bevel gear 901 meshes with both first bevel gears 8 at the same time.

[0028] In this embodiment: when the motor 9 starts, it drives the second bevel gear 901 connected to it to rotate. Since the second bevel gear 901 meshes with the first bevel gear 8 on the rotating shaft 6 and the rotating cylinder 5 at the same time, under the action of gear transmission, the rotation of the second bevel gear 901 will synchronously drive the two first bevel gears 8 to rotate.

[0029] As a technical optimization of this utility model, the bottom of the annular drug distribution tube 4 is evenly distributed with multiple atomizing nozzles 401 along the circumference. The axis of the multiple nozzles 401 forms an angle of 15° to 30° with the vertical direction and the spray direction points to the upper part of the conical surface of the rotating disk 7.

[0030] In this embodiment: the liquid medicine in the annular distribution tube 4 is sprayed out in the form of fine droplets through each atomizing nozzle. The droplets are sprayed onto the conical surface of the rotating disk 7. When the rotating disk 7 is rotating, the rotating disk 7 will further disperse the liquid medicine droplets sprayed onto it, so that the liquid medicine droplets can come into contact with the sewage in the treatment tank 3 more widely and evenly.

[0031] As a technical optimization of this utility model, the upper and lower ends of the inside of the rotating cylinder 5 are mechanically sealed to the outer wall of the rotating shaft 6, and a limiting plate 501 that is slidably connected to the top of the processing box 3 is fixedly installed on the outer wall of the rotating cylinder 5.

[0032] In this embodiment, the rotating cylinder 5 and the rotating shaft 6 are sealed by a mechanical seal to prevent sewage from entering between the rotating cylinder 5 and the rotating shaft 6. In addition, the limiting plate 501 can limit the rotating cylinder 5 to prevent it from falling into the interior of the treatment tank 3.

[0033] As a technical optimization of this utility model, the lower part of the side wall of the treatment box 3 is connected to a water outlet pipe 301, and the bottom is connected to a sewage discharge pipe 302. Both the water outlet pipe 301 and the sewage discharge pipe 302 are equipped with pneumatic butterfly valves.

[0034] In this embodiment: the supernatant after sedimentation is discharged through the water outlet pipe 301, and the sediment is discharged through the sewage pipe 302. By setting a pneumatic butterfly valve, it is easy to control the opening and closing of the water outlet pipe 301 and the sewage pipe 302.

[0035] As a technical optimization of this utility model, the top of the medicine box 2 is connected to a medicine inlet pipe 201 with a sealing cap.

[0036] In this embodiment: by setting the inlet pipe 201, it is convenient to add coagulant solution into the medicine tank 2. The medicine tank 2 can be made of a semi-transparent material or an observation window can be set in the medicine tank 2 to observe the remaining amount of solution in the medicine tank 2.

[0037] The working principle and usage process of this utility model are as follows: During use, the agent is added to the agent tank 2 by opening the sealed cover of the inlet pipe 201. The parameters for adding coagulant are set on the touch screen 307 (HMI touch screen, electrically connected to the PLC controller 306) (the amount of coagulant added is set according to the turbidity of the wastewater). When wastewater flows into the treatment tank 3 through the inlet pipe 303, the electromagnetic flowmeter 304 (Cologne IFM4080) on the inlet pipe 303 monitors the wastewater flow rate in real time, and the online turbidity meter 305 (HACH) monitors the flow rate. The turbidity of the wastewater is monitored in real time by the 2100N PLC. This data is transmitted to the PLC controller 306 (Siemens S7-1200 PLC). Based on the data fed back by the electromagnetic flowmeter 304 and the online turbidity meter 305, the PLC controller 306 controls the metering pump 203 (Mitton Roy GM series) to extract an appropriate amount of coagulant from the reagent tank 2 and deliver it to the annular distribution pipe 4 through the dosing pipe 202. The atomizing nozzle 401 at the bottom of the annular distribution pipe 4 atomizes the agent and sprays it at a certain angle onto the upper part of the conical surface of the rotating disk 7 to achieve uniform dispersion of the agent so as to fully mix it with the wastewater.

[0038] The motor 9 of the drive mechanism is started, which drives the two first bevel gears 8 to rotate in opposite directions simultaneously through the second bevel gear 901. This causes the first stirring rod 502 on the rotating cylinder 5 and the conical rotating disk 7 to rotate in opposite directions, and the multiple second stirring rods 601 on the rotating shaft 6 to stir the sewage. The rotation of the rotating disk 7 further disperses the chemical droplets sprayed onto it, allowing the chemical droplets to come into contact with the sewage in the treatment tank 3 more widely and evenly, which greatly improves the mixing effect of the chemical and the sewage. The treated sewage is discharged from the outlet pipe 301 through the pneumatic butterfly valve, and the sediment and other impurities generated during the treatment process are discharged from the drain pipe 302 through the pneumatic butterfly valve.

Claims

1. A wastewater treatment tank for uniformly dispensing coagulant, comprising a base plate (1) and a driving mechanism, characterized in that: A medicine box (2) is fixedly installed on the upper surface of the base plate (1), and a processing box (3) is provided on one side of the medicine box (2) by means of a support leg fixedly installed on the upper surface of the base plate (1). A metering pump (203) is provided on the outer wall of the medicine tank (2). The input end of the metering pump (203) is connected to the inside of the medicine tank (2) through a pipe, and the output end is connected to a dosing pipe (202) extending into the treatment tank (3). The top of the inside of the treatment box (3) is fixedly installed with an annular drug distribution tube (4), and the end of the drug addition tube (202) is connected to the annular drug distribution tube (4). The treatment box (3) is equipped with a rotary mixing mechanism. The right side wall of the treatment box (3) is connected to an inlet pipe (303). An electromagnetic flow meter (304) and an online turbidity meter (305) are sequentially installed on the inlet pipe (303) along the water flow direction. A PLC controller (306) is fixedly installed on the outer side wall of the treatment box (3). A touch screen (307) is embedded on the outer side wall of the PLC controller (306) and is electrically connected to the electromagnetic flow meter (304), the online turbidity meter (305) and the metering pump (203).

2. The wastewater treatment tank for uniformly dispensing coagulant according to claim 1, characterized in that: The rotary mixing mechanism includes a rotating cylinder (5) that runs vertically through the top of the processing box (3), and the rotating cylinder (5) is rotatably connected to the processing box (3) via a bearing; Two sets of first stirring rods (502) are symmetrically fixedly installed on the lower part of the outer side wall of the rotating cylinder (5). The outer wall of the rotating cylinder (5) is fixedly installed with a conical rotating disk (7) located below the annular drug delivery tube (4), and the conical surface of the rotating disk (7) forms an angle of 30° to 45° with the horizontal plane; A rotating shaft (6) is coaxially arranged inside the rotating cylinder (5), and a plurality of second stirring rods (601) are equidistantly distributed along the outer side wall of the rotating shaft (6) along the axial direction.

3. The wastewater treatment tank for uniformly dispensing coagulant according to claim 1, characterized in that: The drive mechanism includes a first bevel gear (8) fixedly installed on the upper end of the rotating shaft (6) and the upper end of the rotating cylinder (5). A motor (9) is fixedly installed on the upper end face of the processing box (3). A second bevel gear (901) is fixedly connected to the output shaft of the motor (9). The second bevel gear (901) meshes with both first bevel gears (8) at the same time.

4. A wastewater treatment tank for uniformly dispensing coagulant according to claim 2, characterized in that: The bottom of the annular drug delivery tube (4) is evenly distributed with multiple atomizing nozzles (401) along the circumference. The axes of the multiple nozzles (401) form an angle of 15° to 30° with the vertical direction and the spray direction points to the upper part of the conical surface of the rotating disk (7).

5. A wastewater treatment tank for uniformly dispensing coagulant according to claim 2, characterized in that: The upper and lower ends of the rotating cylinder (5) are mechanically sealed to the outer wall of the rotating shaft (6), and a limiting plate (501) that is slidably connected to the top of the processing box (3) is fixedly installed on the outer wall of the rotating cylinder (5).

6. A wastewater treatment tank for uniformly dispensing coagulant according to claim 1, characterized in that: The lower part of the side wall of the treatment box (3) is connected to a water outlet pipe (301), and the bottom is connected to a sewage drain pipe (302). Both the water outlet pipe (301) and the sewage drain pipe (302) are equipped with pneumatic butterfly valves.

7. A wastewater treatment tank for uniformly dispensing coagulant according to claim 1, characterized in that: The top of the medicine box (2) is connected to a medicine inlet pipe (201) with a sealed cap.

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