Multi-point dosing device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a multi-point dosing device for sewage treatment, which comprises a dosing barrel and a dosing pipeline, wherein the dosing pipeline is provided with a metering pump and a plurality of automatic valves; the front end of the dosing pipeline is connected with the dosing barrel; a plurality of dosing pipe branches are arranged at the tail end of the dosing pipeline; an automatic flow meter is arranged on each dosing pipe branch and is used for controlling the dosing amount of the dosing pipe branch. According to the multi-point dosing device, dosing can be carried out on a plurality of dosing points at the same time only by arranging one metering pump, and the dosing amount of each dosing point can be independently controlled; the number of required metering pumps is small, so that the multi-point dosing device is more optimized in structure, simple to assemble and low in energy consumption; the problems that in the prior art, a traditional dosing system is large in energy consumption and high in construction cost and operation and maintenance cost in the middle and later periods are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a multi-point chemical dosing device for sewage treatment. Background Art

[0002] The development of industry has driven the rapid development of related industries and become one of the important pillars of the national economy. However, countries that have experienced rapid industrial development understand that industrial development also means the destruction of the natural environment. In particular, a large amount of industrial sewage generated by industrial production, if not treated reliably and directly discharged into rivers, lakes and seas, will cause serious pollution to water sources. Therefore, the protection of water sources, the purification of water sources and the treatment of sewage are very important. With the scarcity of water resources, reusing sewage after treatment has become a necessary means at the present stage.

[0003] At the present stage, sewage treatment usually removes substances such as nitrogen and phosphorus in sewage through chemical and biological means. However, since relying solely on biological methods at the present stage cannot ensure the requirement of stable effluent compliance, auxiliary measures such as chemical methods are needed; therefore, the chemical dosing system has now become one of the necessary systems in sewage treatment plants. In addition, the stability of water quality is an important means to ensure the quality of reclaimed water after sewage treatment, and it has extremely important significance for the subsequent use of reclaimed water and the normal production of users; in the work of water quality stabilization, chemicals are the core and how to dose is the means, so a reasonable and reliable chemical dosing system is also needed. The chemical dosing device is a complete set of equipment integrating chemical dosing, stirring, liquid conveying and automatic control. It is widely used in raw water of power plants, boiler feed water, oilfield surface gathering and dehydration treatment systems, various chemical dosing systems in petrochemical industry and sewage treatment systems.

[0004] However, the water quality of sewage is complex. The sewage treatment system needs to set up multiple treatment lines for classification treatment. During the treatment process, multiple different chemicals need to be dosed, and each chemical needs to be dosed through multiple chemical dosing lines, which results in the complexity of the chemical dosing system. In the traditional chemical dosing system, each chemical for each sewage line is equipped with an independent metering pump. Generally, 6-10 metering pumps are needed for one treatment line, and the more complex the sewage treatment line is, the more metering pumps are equipped; therefore, this traditional chemical dosing system not only consumes a huge amount of energy, but also increases the construction cost in the early stage of the sewage treatment line and the operation and maintenance cost in the middle and later stages.

[0005] The utility model provides a multi-point chemical dosing device for sewage treatment to solve the problems in the prior art that the traditional chemical dosing system is equipped with many metering pumps, consumes a large amount of energy, and has high construction cost and operation and maintenance cost in the middle and later stages. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a multi-point dosing device for sewage treatment, so as to solve the problems existing in the traditional dosing system in the prior art, such as having many metering pumps, high energy consumption, high construction cost and high operation and maintenance cost in the middle and later stages.

[0007] The technical solution of the present utility model is: a multi-point dosing device for sewage treatment, including a dosing barrel and a dosing pipeline; wherein, one metering pump and several automatic valves are installed on the dosing pipeline; the front end of the dosing pipeline is connected to the dosing barrel; several dosing pipeline branches are arranged at the end of the dosing pipeline; an automatic flowmeter is arranged on each dosing pipeline branch to control the dosing amount of the dosing pipeline branch.

[0008] Preferably, an automatic valve is arranged on each dosing pipeline branch, and the automatic valve is arranged at the front end of the automatic flowmeter to control the start and stop of the dosing pipeline branch.

[0009] Preferably, the automatic flowmeter is any one of an ultrasonic flowmeter, an electromagnetic flowmeter, a turbine flowmeter, and a vortex street flowmeter.

[0010] Preferably, a Y-type filter is arranged on the dosing pipeline; the Y-type filter is arranged at the front end of the metering pump.

[0011] Preferably, a liquid level gauge and a stirrer are arranged on the dosing barrel.

[0012] Preferably, the liquid level gauge is a magnetic flap liquid level gauge or a static pressure liquid level gauge.

[0013] Preferably, a standby dosing pipeline is arranged on the dosing pipeline; one end of the standby dosing pipeline is connected to the dosing pipeline behind the Y-type filter; the other end of the standby dosing pipeline is connected to the end of the dosing pipeline;

[0014] A standby metering pump is arranged on the standby dosing pipeline; an automatic valve is arranged at the front and rear ends of the standby metering pump respectively.

[0015] Preferably, three automatic valves are arranged on the dosing pipeline, and the three automatic valves are respectively arranged at the front end of the Y-type filter and the front and rear ends of the metering pump.

[0016] Preferably, two automatic valves are arranged on the dosing pipeline, and the two automatic valves are respectively arranged at the front end of the Y-type filter and the rear end of the metering pump.

[0017] Compared with the prior art, the advantages of the present utility model are:

[0018] (1) The utility model provides a multi-point dosing device for sewage treatment. This multi-point dosing device only needs to be equipped with one metering pump and / or one standby metering pump, and it can achieve dosing to multiple dosing points simultaneously, and the dosing amount of each dosing point can be controlled separately; the number of required metering pumps is small, which makes the structure of this multi-point dosing device more optimized, simple to assemble, and has lower energy consumption; it solves the problems in the prior art that the traditional dosing system is equipped with many metering pumps, has large energy consumption, and has high construction costs and operation and maintenance costs in the middle and later stages.

[0019] (2) A multi-point dosing device for sewage treatment provided by the utility model. At the end of the dosing pipeline of this multi-point dosing device, there are several dosing pipe branches, and an automatic flowmeter is set on each dosing pipe branch. It can not only determine the number of dosing pipe branches according to the complexity of sewage quality and the needs of the sewage treatment system, but also control the dosing amount of each dosing point corresponding to each dosing pipe branch separately through the automatic flowmeter; thus, it realizes dosing to multiple dosing points simultaneously by one metering pump and precisely controls the dosing amount of each dosing point; reduces the number of metering pumps required in the dosing system, thereby reducing energy loss and effectively reducing the construction cost of the dosing system.

[0020] (3) A multi-point dosing device for sewage treatment provided by the utility model. A Y-type filter is also set on the dosing pipeline of this multi-point dosing device, and it is set at the front end of the metering pump; this Y-type filter can filter out the suspended particles in the liquid medicine to prevent the suspended particles in the liquid medicine from entering the metering pump and the rear end of the dosing pipeline, avoiding the phenomenon of blockage of the metering pump and dosing pipeline, and further reducing the operation and maintenance costs of this multi-point dosing device in the middle and later stages. Brief Description of the Drawings

[0021] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0022] Figure 1 It is a schematic diagram of the multi-point dosing device described in Embodiment 1 of the present utility model;

[0023] Figure 2 It is a schematic diagram of the multi-point dosing device described in Embodiment 2 of the present utility model;

[0024] Wherein: 1, dosing barrel; 2, liquid level gauge; 3, agitator; 4, Y-type filter; 5, metering pump; 51, standby metering pump; 6, automatic valve; 7, dosing pipeline; 71, standby dosing pipeline; 8, automatic flowmeter; 9, dosing pipe branch. Specific Embodiments

[0025] The following further elaborates on the content of the present utility model in conjunction with specific embodiments:

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front end", "rear end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred parts must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Implementation Method 1

[0028] A multi-point dosing device for sewage treatment includes a dosing tank 1 and a dosing pipeline 7; wherein the dosing tank 1 is provided with a liquid level meter 2 and a mixer 3; and the dosing pipeline 7 is provided with a metering pump 5 and a plurality of automatic valves 6. Figure 1 As shown, the dosing pipeline 7 is also provided with a Y-type filter 4, and the Y-type filter is arranged at the front end of the metering pump 5; the dosing pipeline 7 is provided with two automatic valves 6, one of which is arranged at the front end of the Y-type filter 4, and the other automatic valve 6 is arranged at the rear end of the metering pump 5. Secondly, the front end of the dosing pipeline 7 is connected to the dosing barrel 1, and the end of the dosing pipeline 7 is provided with four dosing pipe branches 9; each dosing pipe branch 9 is provided with an automatic flow meter 8 for controlling the dosing amount of each dosing pipe branch 9; in addition, each dosing pipe branch 9 is also provided with an automatic valve 6, and the automatic valve 6 is arranged at the front end of the automatic flow meter 8 for controlling the start and stop of each dosing pipe branch 9.

[0029] First, treat the sewage of each sewage treatment line in a small test, and then determine the dosage of each dosing pipe branch 9; secondly, input the dosage into the electronic control system, and make the dosage linked to the automatic valve 6; then add the medicine and diluent into the dosing barrel 1 according to a certain ratio, start the mixer 3 through the electric control system, and mix the medicine and diluent in the dosing barrel 1 evenly; then, open the automatic valve 6 and metering pump 5 on the dosing pipeline 7 at the same time through the electric control system; finally, open the automatic valve 6 and automatic flowmeter 8 on the dosing pipe branch 9 through the electric control system to add medicine to the dosing point. When the liquid level meter 2 detects that the liquid level in the dosing barrel 1 is too low, the metering pump 5 will stop working, and it is necessary to re-dose the chemical and then dosing.

[0030] In this embodiment, the liquid level meter 2 is a magnetic flap liquid level meter; in other embodiments, the liquid level meter 2 can be a static pressure liquid level meter or other types of liquid level meters 2 that can meet the requirements of the multi-point dosing device.

[0031] In this embodiment, the automatic flow meter 8 is an ultrasonic flow meter, which is used to accurately control the dosage of each dosing pipe branch line 9. In other embodiments, the automatic flow meter 8 is an electromagnetic flow meter, a turbine flow meter, a vortex flow meter, etc.

[0032] In this embodiment, four dosing pipe branches 9 are provided at the end of the dosing pipeline 7; this multi-point dosing device can achieve dosing at four dosing points simultaneously with one dosing pump, and the dosing amount of each dosing point corresponding to each dosing pipe branch 9 is controlled separately through the automatic flowmeter 8. In other embodiments, multiple dosing pipe branches 9 can be provided according to the complexity of the sewage quality and the requirements of the sewage treatment system to meet the needs of multi-point dosing and classified treatment.

[0033] Embodiment 2

[0034] The difference between this embodiment and the above Embodiment 1 is that: in this embodiment, a standby dosing pipeline 71 is further provided on the dosing pipeline 7, as Figure 2 shown, and one end of the standby dosing pipeline 71 is connected to the position behind the Y-type filter 4 on the dosing pipeline, and the other end of the standby dosing pipeline 71 is connected to the end of the dosing pipeline 7. In addition, a standby metering pump 51 is provided on the standby dosing pipeline 71; and an automatic valve 6 is provided at each of the front and rear ends of the standby metering pump 51. Another difference between this embodiment and the above Embodiment 1 is that: three automatic valves 6 are provided on the dosing pipeline 7, and the three automatic valves 6 are respectively provided at the front end of the Y-type filter 4 and the front and rear ends of the metering pump 5. In this embodiment, five dosing pipe branches 9 are provided at the end of the dosing pipeline 7, and dosing can be performed on five dosing points simultaneously.

[0035] In this embodiment, a standby dosing pipeline 71 and a standby metering pump 51 are provided. When the metering pump 5 fails and cannot operate, the standby metering pump 51 can be started to replace the metering pump 5 for operation.

[0036] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A multi-point dosing device for sewage treatment, comprising a dosing tank (1) and a dosing pipeline (7); characterized in that: The dosing pipeline (7) is installed with a metering pump (5) and a plurality of automatic valves (6); the front end of the dosing pipeline (7) is connected to the dosing barrel (1); the end of the dosing pipeline (7) is provided with a plurality of dosing pipe branches (9); each of the dosing pipe branches (9) is provided with an automatic flow meter (8) for controlling the dosing amount of the dosing pipe branch (9).

2. A sewage treatment multi-point dosing device according to claim 1, characterized in that: Each of the dosing pipe branches (9) is provided with an automatic valve (6), and the automatic valve (6) is arranged at the front end of the automatic flow meter (8) to control the start and stop of the dosing pipe branch (9).

3. A sewage treatment multi-point dosing device according to claim 2, characterized in that: The automatic flow meter (8) is any one of an ultrasonic flow meter, an electromagnetic flow meter, a turbine flow meter, and a vortex flow meter.

4. A sewage treatment multi-point dosing device according to claim 3, characterized in that: The drug adding pipeline (7) is provided with a Y-type filter (4); the Y-type filter (4) is arranged at the front end of the metering pump (5).

5. A sewage treatment multi-point dosing device according to claim 4, characterized in that: The medicine adding barrel (1) is provided with a liquid level meter (2) and a stirrer (3).

6. A sewage treatment multi-point dosing device according to claim 5, characterized in that: The liquid level gauge (2) is a magnetic flap liquid level gauge or a static pressure liquid level gauge.

7. A sewage treatment multi-point dosing device according to claim 6, characterized in that: The dosing pipeline (7) is provided with a spare dosing pipeline (71); one end of the spare dosing pipeline (71) is connected to the dosing pipeline (7) at the rear end of the Y-type filter (4); the other end of the spare dosing pipeline (71) is connected to the end of the dosing pipeline (7); The standby dosing pipeline (71) is provided with a standby metering pump (51); an automatic valve (6) is respectively provided at the front and rear ends of the standby metering pump (51).

8. A sewage treatment multi-point dosing device according to claim 7, characterized in that: The dosing pipeline (7) is provided with three automatic valves (6), and the three automatic valves (6) are respectively arranged at the front end of the Y-type filter (4) and the front and rear ends of the metering pump (5).

9. A sewage treatment multi-point dosing device according to claim 6, characterized in that: The dosing pipeline (7) is provided with two automatic valves (6), and the two automatic valves (6) are respectively arranged at the front end of the Y-type filter (4) and the rear end of the metering pump (5).

Images