Dosing device for sewage treatment

Abstract

The invention provides a sewage treatment dosing device. The sewage treatment dosing device comprises at least two solution tanks; all the solution tanks are sequentially connected in series through the middle pipeline; the first solution tank is communicated with an outlet of the medicine inlet pipe according to the flowing direction of the solution; according to the flowing direction of the solution, the last solution tank is communicated with an inlet of the water outlet pipe; each solution tank is provided with a stirrer; according to the flowing direction of the solution, the first solution tank is communicated with an outlet of the water inlet pipe. According to the device, the solution mixing time can be prolonged, hot water dispensing is not needed, the agent adding efficiency and the agent dissolving efficiency can be effectively improved, pipeline blockage is avoided, and agent waste is reduced.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a sewage treatment dosing device. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical care, catering, etc. The existing urban domestic sewage and industrial sewage treatment facilities usually include coarse screens, fine screens, grit tanks, biochemical tanks, sedimentation tanks, high-density tanks and disinfection tanks.

[0003] Soda ash is often added during sewage treatment. Soda ash can adjust the pH of wastewater to meet treatment requirements. Chemical reagents with different pH values ​​are required for treatment at different stages of treatment, and soda ash can neutralize acidic components while adjusting the pH value of water. Soda ash can promote chemical reactions and precipitation processes in wastewater, and achieve the purpose of purifying water by adsorbing and precipitating pollutants. Soda ash can increase the conductivity of wastewater and promote ion exchange reactions. Soda ash has certain adsorption properties and can adsorb small particles in wastewater to control pollution. There are some organic substances such as oils and fats in wastewater, which are difficult to dissolve in water and will have adverse effects on the environment. By using soda ash, it can be saponified to remove organic pollutants such as oils and fats. For example, soda ash is often needed to remove hardness in wastewater in high-density sedimentation tanks.

[0004] The existing soda ash dosing device has low dosing efficiency and dissolution efficiency. Sometimes, in order to improve the dissolution efficiency, hot water has to be used to prepare the drug, which makes the dosing operation process more complicated. In addition, due to the low dissolution efficiency, a lot of drugs are wasted and the pipeline is frequently blocked. Summary of the invention

[0005] The object of the present invention is to provide a sewage treatment dosing device, which can prolong the solution mixing time, does not need to use hot water to prepare the medicine, can effectively improve the efficiency of medicine addition and the efficiency of medicine dissolution, avoid the occurrence of pipeline blockage, and reduce the waste of medicine.

[0006] In order to achieve the above object, the present invention provides a sewage treatment dosing device, which comprises:

[0007] At least two solution tanks;

[0008] An intermediate pipeline, through which all the solution tanks are sequentially connected in series;

[0009] A drug inlet pipe, wherein the first solution tank is connected to the outlet of the drug inlet pipe according to the solution flow direction;

[0010] A water outlet pipe, wherein the last solution tank is connected to the inlet of the water outlet pipe according to the solution flow direction;

[0011] A stirrer, each of the solution tanks is equipped with the stirrer;

[0012] The water inlet pipe is connected with the outlet of the first solution tank according to the solution flow direction.

[0013] Optionally, the height of the water outlet pipe is lower than the height of the intermediate pipeline.

[0014] Optionally, the dosing device includes a blower, which is disposed in the first solution tank and is used to blow away the pharmaceutical powder injected through the drug inlet pipe.

[0015] Optionally, the dosing device includes a liquid level monitoring component, and the liquid level monitoring component is installed on at least one of the solution tanks.

[0016] Optionally, the liquid level monitoring component includes a transparent liquid level monitoring tube, both ends of which are connected to the same solution tank, and the two ends of the liquid level monitoring tube are at different heights.

[0017] Optionally, the drug adding device includes a controller, which is electrically connected to the liquid level monitoring component, and the controller is used to control the opening and closing of the water inlet pipe and the drug inlet pipe.

[0018] Optionally, the intermediate pipeline is inclined relative to a horizontal direction, and a liquid inlet end of the intermediate pipeline is higher than a liquid outlet end of the intermediate pipeline.

[0019] Optionally, the angle between the intermediate pipeline and the horizontal direction is 3° to 7°.

[0020] Optionally, the casing of the blower is made of anti-corrosion material.

[0021] Optionally, the drug inlet pipe is inclined relative to the horizontal direction.

[0022] In summary, the present invention provides a sewage treatment dosing device, which includes: at least two solution tanks; an intermediate pipeline, all of the solution tanks are connected in series in sequence through the intermediate pipeline; a drug inlet pipe, according to the solution flow direction, the first solution tank is connected to the outlet of the drug inlet pipe; a water outlet pipe, according to the solution flow direction, the last solution tank is connected to the inlet of the water outlet pipe; an agitator, each of the solution tanks is equipped with the agitator; a water inlet pipe, according to the solution flow direction, the first solution tank is connected to the outlet of the water inlet pipe.

[0023] As configured above, the present invention uses at least two solution tanks, and each solution tank is equipped with an agitator, while the prior art usually has only one solution tank. Therefore, the present invention prolongs the solution mixing time and can make the agent dissolve more fully; the present invention uses gravity in the intermediate pipeline to automatically balance the liquid level in all solution tanks, further prolonging the solution mixing time. In summary, the present invention can prolong the solution mixing time, and there is no need to use hot water to prepare the medicine, which effectively improves the efficiency of agent addition and the efficiency of agent dissolution, can avoid the occurrence of pipeline blockage, reduce the waste of agents, effectively save the cost of agents, and has a simple operation process. Especially when the water hardness of the high-density sedimentation tank is high, the use of the device of the present invention to add soda ash agent powder can significantly improve the hardness reduction effect of the high-density sedimentation tank, avoid pipeline blockage, and ultimately achieve stable operation of the soda ash dosing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Those skilled in the art should understand that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0025] Figure 1 It is a schematic diagram of a sewage treatment dosing device according to an embodiment of the present invention.

[0026] The reference numerals are as follows:

[0027] 11-first solution tank; 12-second solution tank; 2-intermediate pipeline; 3-drug inlet pipe; 4-water outlet pipe; 5-agitator; 6-water inlet pipe; 7-blower; 8-liquid level monitoring component; 81-liquid level monitoring pipe. DETAILED DESCRIPTION

[0028] In this document, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", "front", "back", "top", "bottom", etc. are used to indicate directions or positional relationships based on the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction and operation. Therefore, they cannot be understood as limiting the present invention.

[0029] The specific implementation of the present invention will be described in more detail below in conjunction with the schematic diagram. The advantages and features of the present invention will become clearer based on the following description. It should be noted that the drawings are all in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] Figure 1 This is a schematic diagram of a sewage treatment dosing device according to an embodiment of the present invention. Figure 1 An embodiment of the present invention provides a sewage treatment dosing device, which includes at least two solution tanks, an intermediate pipeline 2, a drug inlet pipe 3, a water outlet pipe 4, a stirrer 5 and a water inlet pipe 6.

[0031] All solution tanks are connected in series in sequence through the intermediate pipeline 2. Furthermore, the intermediate pipeline 2 is inclined relative to the horizontal direction, and the liquid inlet end of the intermediate pipeline 2 is higher than the liquid outlet end of the intermediate pipeline 2. With this arrangement, the self-flow of the solution between the solution tanks is less likely to be blocked than the horizontal intermediate pipeline. Preferably, the angle between the intermediate pipeline 2 and the horizontal direction is 3° to 7°. For example, in this embodiment, the angle between the intermediate pipeline 2 and the horizontal direction is 4° to 6°. This angle range is conducive to controlling the self-flow flow rate and prolonging the dissolution time of the drug. The liquid outlet end of the intermediate pipeline 2 can be located at a height of 0.4 to 0.5 meters in the solution tank, and the length of the intermediate pipeline 2 can be, for example, 1.5 to 2 meters.

[0032] According to the solution flow direction, the first solution tank is connected to the outlet of the drug inlet pipe 3, the last solution tank is connected to the inlet of the water outlet pipe 4, and the first solution tank is connected to the outlet of the water inlet pipe 6. This embodiment takes two solution tanks and the addition of soda ash as an example. For example, the solution tank is a cylindrical steel barrel and is painted for corrosion resistance. The bottom diameter of the solution tank is 1.5 meters and the height is 3.3 meters. Let the first solution tank be the first solution tank 11, and let the last solution tank be the second solution tank 12, then the outlet of the drug inlet pipe 3 is connected to the first solution tank 11 for adding soda ash powder to the first solution tank 11, the second solution tank 12 is connected to the inlet of the water outlet pipe 4 for water outlet, and the outlet of the water inlet pipe 6 is connected to the first solution tank 11 for adding water to the first solution tank 11.

[0033] Each solution tank is equipped with a stirrer 5, which can fully mix the medicine and improve the dissolution efficiency of the medicine. The stirring blades of the stirrer can be located at a height of 0.5 to 0.6 meters in the solution tank.

[0034] Further, the height of the water outlet pipe 4 is lower than the height of the intermediate pipeline 2. It is understandable that the lower the height of the water outlet pipe 4, the more conducive it is to fully discharge the solution in the second solution tank 12. The water outlet of the water outlet pipe 4 can be lifted by a screw dosing pump and sent to a high-density sedimentation tank. The drug inlet pipe 3 is inclined relative to the horizontal direction, and the drug inlet pipe 3 can be, for example, a DN80 stainless steel pipe, and the angle between the drug inlet pipe 3 and the horizontal direction can be 45° to 60°. The water inlet pipe 6 can be, for example, a DN50 stainless steel pipe, and the water inlet direction of the water inlet pipe 6 can be a vertical direction.

[0035] Preferably, the dosing device includes a blower 7, which is arranged in the first solution tank and is used to blow away the pharmaceutical powder put into the medicine inlet pipe 3 so that the pharmaceutical powder is evenly scattered. The shell of the blower 7 should be made of anti-corrosion material and its power should be between 120 and 150 watts.

[0036] The dosing device includes a liquid level monitoring assembly 8, which is installed on at least one solution tank. Exemplarily, the liquid level monitoring assembly 8 includes a transparent liquid level monitoring tube 81, both ends of which are connected to the same solution tank, and the two ends of the liquid level monitoring tube 81 are at different heights. It can be understood that the transparent liquid level monitoring tube 81 is provided with a scale, which can intuitively display the liquid level, which is convenient for staff to observe at any time.

[0037] The dosing device includes a controller, which is electrically connected to the liquid level monitoring component. The controller is used to control the opening and closing of the water inlet pipe 6 and the drug inlet pipe 3 to control the water inlet and drug addition, so that the water and drug are replenished in time. The dosing device may include a water replenishing device and a drug adding device (not shown in the figure). The water replenishing device adds water to the first solution tank 11 through the water inlet pipe 6, and the drug adding device adds drug to the first solution tank 11 through the drug inlet pipe 3. The water replenishing device includes the water inlet pipe 6, and the drug adding device includes the drug inlet pipe 3. It can be understood that when the liquid level monitoring component detects that the liquid level in the solution tank drops to a preset low liquid level, the controller automatically sends a signal to the water replenishing device and the drug adding device, so that the water inlet pipe 6 and the drug inlet pipe 3 are opened, and water intake and drug addition are started; when the liquid level monitoring component detects that the liquid level in the solution tank rises to a preset high liquid level, the controller automatically sends a signal to the water replenishing device and the drug adding device, so that the water inlet pipe 6 and the drug inlet pipe 3 are closed, and water intake and drug addition are stopped. For example, in this embodiment, the preset high liquid level is 2.8 meters, and the preset low liquid level is 0.5 meters. In this way, full automation can be achieved, and the operation is more convenient.

[0038] As configured above, the present invention uses at least two solution tanks, and each solution tank is equipped with an agitator 5, while the prior art usually has only one solution tank. Therefore, the present invention prolongs the solution mixing time and can make the agent dissolve more fully; the present invention uses the intermediate pipeline 2 to flow by gravity, so that the liquid level in all solution tanks is automatically balanced, further prolonging the solution mixing time. In summary, the present invention can prolong the solution mixing time, and there is no need to use hot water to prepare the medicine, which effectively improves the efficiency of agent addition and the efficiency of agent dissolution, can avoid the occurrence of pipeline blockage, reduce the waste of agents, effectively save the cost of agents, and has a simple operation process. Especially when the water hardness of the high-density sedimentation tank is high, the use of the device of the present invention to add soda ash agent powder can significantly improve the hardness reduction effect of the high-density sedimentation tank, avoid pipeline blockage, and finally achieve stable operation of the soda ash dosing system.

[0039] It should be noted that references to "one embodiment", "an embodiment", "a specific embodiment", "some embodiments", etc. in the specification only indicate that the described embodiment may include a particular feature, structure or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when a particular feature, structure or characteristic is described in conjunction with an embodiment, whether or not explicitly described, it is within the knowledge of a person skilled in the relevant art to implement such feature, structure or characteristic in conjunction with other embodiments.

[0040] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0041] It should also be noted that, although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

[0042] It should also be understood that, unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are merely used to distinguish between the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0043] It should also be recognized that the terms described herein are only used to describe specific embodiments and are not intended to limit the scope of the invention. It should be noted that the singular forms "a" and "an" used herein and in the appended claims include plural references unless the context clearly indicates otherwise. For example, a reference to "a step" or "a device" means a reference to one or more steps or devices, and may include secondary steps and secondary devices. All conjunctions used should be understood in the broadest sense. And, the word "or" should be understood to have the definition of a logical "or", rather than a logical "exclusive or", unless the context clearly indicates otherwise. In addition, the implementation of the method and / or device in the embodiments of the present invention may include performing the selected task manually, automatically, or in combination.

Claims

1. A sewage treatment dosing device, characterized in that: include: At least two solution tanks; An intermediate pipeline, through which all the solution tanks are sequentially connected in series; A drug inlet pipe, wherein the first solution tank is connected to the outlet of the drug inlet pipe according to the solution flow direction; A water outlet pipe, wherein the last solution tank is connected to the inlet of the water outlet pipe according to the solution flow direction; A stirrer, each of the solution tanks is equipped with the stirrer; The water inlet pipe is connected with the outlet of the first solution tank according to the solution flow direction.

2. The sewage treatment dosing device according to claim 1, characterized in that: The height position of the water outlet pipe is lower than the height position of the intermediate pipeline.

3. The sewage treatment dosing device according to claim 1, characterized in that: The dosing device comprises a blower, which is arranged in the first solution tank and is used to blow away the medicine powder put into the medicine feeding pipe.

4. The sewage treatment dosing device according to claim 1, characterized in that: The dosing device comprises a liquid level monitoring component, and the liquid level monitoring component is installed on at least one of the solution tanks.

5. The sewage treatment dosing device according to claim 4, characterized in that: The liquid level monitoring component comprises a transparent liquid level monitoring tube, both ends of which are connected to the same solution tank, and the two ends of the liquid level monitoring tube are at different heights.

6. The sewage treatment dosing device according to claim 4, characterized in that: The drug adding device comprises a controller, which is electrically connected to the liquid level monitoring component and is used to control the opening and closing of the water inlet pipe and the drug inlet pipe.

7. The sewage treatment dosing device according to claim 1, characterized in that: The intermediate pipeline is inclined relative to the horizontal direction, and the liquid inlet end of the intermediate pipeline is higher than the liquid outlet end of the intermediate pipeline.

8. The sewage treatment dosing device according to claim 7, characterized in that: The angle between the intermediate pipeline and the horizontal direction is 3° to 7°.

9. The sewage treatment dosing device according to claim 1, characterized in that: The shell of the blower is made of anti-corrosion material.

10. The sewage treatment dosing device according to claim 1, characterized in that: The medicine feeding pipe is inclined relative to the horizontal direction.

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