Accurate activated carbon adding device

Abstract

A precise activated carbon adding device relates to the technical field of sewage treatment and comprises a sedimentation tank, the side face of the sedimentation tank is communicated with a water inlet pipe, an activated carbon adding pipe and a water outlet pipe, the water inlet pipe is provided with a water inlet online flow meter and a water inlet end online monitoring unit, and the activated carbon adding pipe is provided with a chemical adding unit. A water inlet end on-line monitoring unit is installed on the water inlet pipe, a water outlet end on-line monitoring unit is installed on the water outlet pipe, a mounting base is fixed to the side face of the sedimentation tank, and a PLC is installed on the side face of the mounting base. The water quality treatment effect of the efficient sedimentation tank of the sewage plant can be detected in real time, and powdered activated carbon can be automatically added according to a detection value.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device for precise dosing of activated carbon. Background Technology

[0002] In wastewater treatment, high-efficiency sedimentation tanks often use activated carbon to adsorb organic pollutants, heavy metals, and other harmful substances in the water, thereby improving water purification efficiency. However, existing methods of adding activated carbon have many problems.

[0003] Traditional dosing devices often struggle to accurately add activated carbon according to the actual wastewater treatment needs. They either add too much, wasting activated carbon and increasing treatment costs, or add too little, failing to achieve the expected purification effect. They also cannot automatically add powdered activated carbon, thus failing to meet usage requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an activated carbon precision dosing device, which has the advantages of stable operation and reduced activated carbon consumption. It can detect the water quality treatment effect of the high-efficiency sedimentation tank of the sewage treatment plant in real time and automatically add powdered activated carbon according to the detection value, which can effectively solve the problems in the background technology.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] An activated carbon precision dosing device includes a sedimentation tank. An inlet pipe, an activated carbon addition pipe, and an outlet pipe are respectively connected to the side of the sedimentation tank. An online inlet flow meter and an online inlet monitoring unit are installed on the inlet pipe. A dosing unit is installed on the activated carbon addition pipe. An online outlet monitoring unit is installed on the outlet pipe. A mounting base is fixed to the side of the sedimentation tank, and a PLC controller is installed on the side of the mounting base. The PLC controller is electrically connected to an external power supply, and the online inlet flow meter is electrically connected to the PLC controller.

[0007] Furthermore, the online monitoring unit at the water inlet includes a first COD analyzer and a first ammonia nitrogen detector, both of which are installed on the water inlet pipe and are electrically connected to a PLC controller.

[0008] Furthermore, the online monitoring unit at the water outlet includes a second COD analyzer and a second ammonia nitrogen detector, both of which are installed on the water outlet pipe and are electrically connected to a PLC controller.

[0009] Furthermore, the dosing unit includes a dosing flow meter and a variable frequency dosing pump, both of which are mounted on the activated carbon adding pipe. The pump port of the variable frequency dosing pump is connected to the activated carbon storage system, and both the dosing flow meter and the variable frequency dosing pump are electrically connected to a PLC controller.

[0010] Furthermore, the inlet online flow meter is either an electromagnetic flow meter or an ultrasonic flow meter.

[0011] Furthermore, it also includes an alarm, which is mounted on the side of the mounting base and electrically connected to the PLC controller.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This activated carbon precision dosing device has the following advantages: it uses COD and ammonia nitrogen as control variables, and controls the addition of activated carbon through pre-processing and feedback, which has the advantages of stable operation and reduced activated carbon consumption. It can detect the water quality treatment effect of the high-efficiency sedimentation tank of the sewage treatment plant in real time and can automatically add powdered activated carbon according to the detection value. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This utility model Figure 1 A magnified structural diagram at point A;

[0015] Figure 3 This is a three-dimensional side view of the present invention;

[0016] Figure 4 This utility model Figure 3 A magnified structural diagram at point B.

[0017] In the diagram: 1-Sedimentation tank, 2-Inlet pipe, 3-Inlet online monitoring unit, 31-First COD analyzer, 32-First ammonia nitrogen detector, 4-Dosing unit, 41-Dosing flow meter, 42-Variable frequency dosing pump, 5-Outlet online monitoring unit, 51-Second COD analyzer, 52-Second ammonia nitrogen detector, 6-Inlet online flow meter, 7-Mounting base, 8-Alarm, 9-PLC controller, 10-Activated carbon addition pipe, 11-Outlet pipe. Detailed Implementation

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Please see Figure 1-4This embodiment provides a technical solution: an activated carbon precision dosing device, including a sedimentation tank 1. The side of the sedimentation tank 1 is connected to an inlet pipe 2, an activated carbon addition pipe 10, and an outlet pipe 11. An inlet online flow meter 6 and an inlet end online monitoring unit 3 are installed on the inlet pipe 2. A dosing unit 4 is installed on the activated carbon addition pipe 10. An outlet end online monitoring unit 5 is installed on the outlet pipe 11. An installation base 7 is fixed on the side of the sedimentation tank 1. A PLC controller 9 is installed on the side of the installation base 7. The PLC controller 9 is electrically connected to an external power supply. The inlet online flow meter 6 is electrically connected to the PLC controller 9.

[0020] The inlet-side online monitoring unit 3 includes a first COD analyzer 31 and a first ammonia nitrogen detector 32, both of which are installed on the inlet pipe 2 and electrically connected to the PLC controller 9. The outlet-side online monitoring unit 5 includes a second COD analyzer 51 and a second ammonia nitrogen detector 52, both of which are installed on the outlet pipe 11 and electrically connected to the PLC controller 9. The dosing unit 4 includes a dosing flow meter 41 and a variable frequency dosing pump 42. Both the dosing meter 41 and the variable frequency dosing pump 42 are mounted on the activated carbon addition pipe 10, and the pump port of the variable frequency dosing pump 42 is connected to the activated carbon storage system. Both the dosing flow meter 41 and the variable frequency dosing pump 42 are electrically connected to the PLC controller 9. The inlet online flow meter 6 is either an electromagnetic flow meter or an ultrasonic flow meter. The inlet online flow meter 6 is used to monitor the inlet flow of the sedimentation tank in real time and transmit the data to the PLC controller 9. The first COD analyzer 31 and the first ammonia nitrogen detector 32 are used to monitor the COD concentration and ammonia nitrogen concentration at the inlet end in real time and transmit the data to the PLC controller 9. The second COD analyzer 51 and the second ammonia nitrogen detector 52 are used to monitor the COD concentration at the outlet end in real time. The concentration and ammonia nitrogen concentration are transmitted to the PLC controller 9. The variable frequency dosing pump 42 is used to add activated carbon to the sedimentation tank 1. The dosing flow meter 41 is used to monitor the actual amount of activated carbon added and feed back the data to the PLC controller 9. The PLC controller 9 calculates the initial amount of activated carbon added based on the influent flow data fed back by the online influent flow meter 6, the influent water quality data fed back by the first COD analyzer 31 and the first ammonia nitrogen detector 32, and then dynamically adjusts the initial amount of activated carbon added based on the effluent water quality data fed back by the second COD analyzer 51 and the second ammonia nitrogen detector 52. Based on the actual amount added fed back by the dosing flow meter 41, the operating frequency of the variable frequency dosing pump 42 is controlled to form a closed loop control. It uses COD and ammonia nitrogen as control variables and controls the addition of activated carbon through pre- and feedback control. It has the advantages of stable operation and reduced activated carbon consumption. It can detect the water quality treatment effect of the high-efficiency sedimentation tank of the sewage treatment plant in real time and can automatically add powdered activated carbon according to the detection value.

[0021] It also includes an alarm 8, which is installed on the side of the mounting base 7. The alarm 8 is electrically connected to the PLC controller 9. When the water inflow, water quality indicators, or activated carbon dosage exceed the preset range, the alarm 8 will issue an audible and visual alarm signal, so that relevant personnel can take timely countermeasures.

[0022] The working principle of the activated carbon precision dosing device provided by this utility model is as follows: the online inlet flow meter 6 is used to monitor the inlet water flow of the sedimentation tank in real time and transmit the data to the PLC controller 9; the first COD analyzer 31 and the first ammonia nitrogen detector 32 are used to monitor the COD concentration and ammonia nitrogen concentration at the inlet water in real time and transmit the data to the PLC controller 9; the second COD analyzer 51 and the second ammonia nitrogen detector 52 are used to monitor the COD concentration at the outlet water in real time. The concentration and ammonia nitrogen concentration are transmitted to the PLC controller 9. The variable frequency dosing pump 42 is used to add activated carbon to the sedimentation tank 1. The dosing flow meter 41 is used to monitor the actual amount of activated carbon added and feed back the data to the PLC controller 9. The PLC controller 9 calculates the initial activated carbon dosage based on the influent flow data fed back by the online influent flow meter 6, the influent water quality data fed back by the first COD analyzer 31 and the first ammonia nitrogen detector 32, and then dynamically adjusts the initial activated carbon dosage based on the effluent water quality data fed back by the second COD analyzer 51 and the second ammonia nitrogen detector 52. Based on the actual dosage fed back by the dosing flow meter 41, the operating frequency of the variable frequency dosing pump 42 is controlled to form a closed-loop control. When the influent flow, water quality indicators, and activated carbon dosage exceed the preset range, the alarm 8 issues an audible and visual alarm signal.

[0023] It is worth noting that the components disclosed in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The working methods of the PLC controller 9 in controlling the online inlet flow meter 6, the first COD analyzer 31, the first ammonia nitrogen detector 32, the second COD analyzer 51, the second ammonia nitrogen detector 52, the dosing flow meter 41, the variable frequency dosing pump 42, and the alarm 8 all adopt existing technologies. The PLC controller 9, the online inlet flow meter 6, the first COD analyzer 31, the first ammonia nitrogen detector 32, the second COD analyzer 51, the second ammonia nitrogen detector 52, the dosing flow meter 41, the variable frequency dosing pump 42, and the alarm 8 are all products currently on the market. Their structures and principles are known technologies. This solution only describes their role in this solution and the technical effects they are intended to produce.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0025] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A device for precise dosing of activated carbon, comprising a sedimentation tank (1), characterized in that: The sedimentation tank (1) is connected to an inlet pipe (2), an activated carbon addition pipe (10), and an outlet pipe (11) on its side. An online inlet flow meter (6) and an online inlet monitoring unit (3) are installed on the inlet pipe (2). A dosing unit (4) is installed on the activated carbon addition pipe (10). An online outlet monitoring unit (5) is installed on the outlet pipe (11). A mounting base (7) is fixed on the side of the sedimentation tank (1). A PLC controller (9) is installed on the side of the mounting base (7). The PLC controller (9) is electrically connected to an external power supply. The online inlet flow meter (6) is electrically connected to the PLC controller (9).

2. The activated carbon precision dosing device according to claim 1, characterized in that: The inlet end online monitoring unit (3) includes a first COD analyzer (31) and a first ammonia nitrogen detector (32). Both the first COD analyzer (31) and the first ammonia nitrogen detector (32) are installed on the inlet pipe (2). Both the first COD analyzer (31) and the first ammonia nitrogen detector (32) are electrically connected to the PLC controller (9).

3. The activated carbon precision dosing device according to claim 1, characterized in that: The online monitoring unit (5) at the water outlet includes a second COD analyzer (51) and a second ammonia nitrogen detector (52). The second COD analyzer (51) and the second ammonia nitrogen detector (52) are both installed on the water outlet pipe (11). The second COD analyzer (51) and the second ammonia nitrogen detector (52) are both electrically connected to the PLC controller (9).

4. The activated carbon precision dosing device according to claim 1, characterized in that: The dosing unit (4) includes a dosing flow meter (41) and a variable frequency dosing pump (42). Both the dosing flow meter (41) and the variable frequency dosing pump (42) are mounted on the activated carbon adding pipe (10), and the pump port of the variable frequency dosing pump (42) is connected to the activated carbon storage system. Both the dosing flow meter (41) and the variable frequency dosing pump (42) are electrically connected to the PLC controller (9).

5. The activated carbon precision dosing device according to claim 1, characterized in that: The inlet online flow meter (6) is either an electromagnetic flow meter or an ultrasonic flow meter.

6. The activated carbon precision dosing device according to claim 1, characterized in that: It also includes an alarm (8), which is mounted on the side of the mounting base (7) and is electrically connected to the PLC controller (9).

Images