A double-washing sewage on-line sampling system

Abstract

The utility model relates to sewage sampling technical field especially, relates to a kind of double wash sewage on-line sampling system.The double wash sewage on-line sampling system includes sampling pipeline, filter unit, flow cell and PH meter, filter unit is connected with the sampling pipeline of sewage by pipeline, and filter unit is connected with heat exchange unit;PH meter is arranged at flow cell, and lifting unit and cleaning unit are installed on flow cell.The double wash sewage on-line sampling system provided by the utility model drives PH meter to rise and separate from the sewage in flow cell by lifting unit, then cleaning medium supply tank supplies cleaning medium for cleaning unit, so that cleaning unit can clean the probe of PH meter, so that the hidden danger that PH meter detection is not accurate due to more impurities adhering on the electrode of PH meter is eliminated, and by constructing electrode dynamic cleaning strategy of PH meter, efficient self-cleaning and accurate measurement of sampling system are realized, and the reliability of sewage treatment process monitoring is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater sampling technology, and in particular to an online wastewater sampling system for dual washing. Background Technology

[0002] In the fields of wastewater treatment and water quality monitoring, online sampling and testing are crucial for controlling treatment effectiveness and ensuring that emissions meet standards. Existing online wastewater sampling systems have the following problems: 1. Suspended particles and impurities in wastewater are prone to adhere to the surface of the pH meter probe. Long-term use will lead to a continuous decline in detection accuracy. Moreover, manual cleaning is time-consuming and labor-intensive and cannot achieve real-time cleaning. Second, the temperature of wastewater fluctuates greatly, and directly entering the testing process will affect the stability of testing equipment such as pH meters. A single heat exchange structure is difficult to adapt to the adjustment needs of different flow rates and different temperature conditions. Third, pollutants are easily left in sampling pipelines and testing channels. After multiple samplings, the risk of cross-contamination increases, which in turn affects the accuracy of the test data. Meanwhile, the existing cleaning units are mostly manually controlled, the supply of cleaning media and the cleaning action lack linkage, the self-cleaning efficiency is low, and the filter unit is prone to blockage if it is not discharged in time, which leads to the interruption of the sampling process. These problems seriously restrict the continuity, accuracy and automation level of online sewage sampling and testing, and make it difficult to meet the needs of efficient monitoring in modern sewage treatment processes.

[0003] Therefore, it is necessary to provide a new online sampling system for dual-wash wastewater to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an online sampling system for dual-wash wastewater.

[0005] The online sampling system for dual-wash wastewater provided by this utility model includes: Sampling pipeline; The filter unit is connected to the wastewater sampling pipeline via a pipe, and the wastewater outlet of the filter unit is connected to a wastewater discharge pipeline. The filter unit is also connected to a heat exchange unit. A flow-through tank is connected to the wastewater outlet of the heat exchange unit and to the sewage pipeline. A pH meter is installed in a flow cell, and the flow cell is equipped with a lifting unit for raising and lowering the pH meter and a cleaning unit for cleaning the pH meter probe. A steam unit, which is connected to the sewage pipe of the heat exchange unit.

[0006] Preferably, the heat exchange unit includes a first condenser and a second condenser, and both the first condenser and the second condenser are connected to a cooling water supply pipeline, and the outlets of both the first condenser and the second condenser are connected to a cooling water discharge pipeline. Ball valves are installed in the pipes connecting the first condenser and the second condenser, the pipes between the first condenser and the cooling water supply line and the cooling water discharge line, and the pipes between the second condenser and the cooling water supply line and the cooling water discharge line.

[0007] Preferably, a pressure gauge and a temperature gauge are installed on the pipe between the wastewater outlet of the heat exchange unit and the flow tank.

[0008] Preferably, a flow meter is installed on the pipeline between the flow pool and the sewage pipeline.

[0009] Preferably, the filtrate inlet of the filtration unit is connected to the sewage pipe in the heat exchange unit.

[0010] Preferably, the dual-wash wastewater online sampling system further includes a control unit, which is electrically connected to the lifting unit and the washing unit via wires, and controls the opening and closing of the lifting unit and the washing unit.

[0011] Preferably, the feed pipe of the cleaning unit is connected to a cleaning medium supply tank, and the discharge pump in the cleaning medium supply tank is electrically connected to the control unit.

[0012] Preferably, the pH meter is electrically connected to an instrument switch.

[0013] Compared with related technologies, the online sampling system for dual-wash wastewater provided by this utility model has the following beneficial effects: This invention uses a lifting unit to raise the pH meter and detach it from the wastewater in the flow tank. A cleaning medium supply tank then supplies cleaning medium to the cleaning unit, allowing it to clean the pH meter probe. This eliminates the potential for inaccurate pH readings due to impurities adhering to the electrodes. By implementing a dynamic electrode cleaning strategy, the sampling system achieves efficient self-cleaning and accurate measurement, significantly improving the reliability of wastewater treatment process monitoring. Furthermore, the lifting unit allows for precise adjustment of the pH electrode insertion depth, meeting the depth requirements of different liquid levels and testing scenarios. Opening the valve allows steam to flow into the wastewater pipe in the heat exchange unit, then into the flow tank, and finally into the discharge pipe, thus cleaning the pipeline and reducing residual contaminants to prevent them from affecting the accuracy of the pH meter during subsequent wastewater testing. Attached Figure Description

[0014] Figure 1A schematic diagram of the process structure of the online sampling system for dual-wash wastewater provided by this utility model. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0017] Please see Figure 1 This utility model provides an online sampling system for dual-wash wastewater, which includes a sampling pipeline, a filtration unit, a flow tank, a pH meter, and a steam unit.

[0018] In the embodiments of this utility model, please refer to Figure 1 The filtration unit is connected to the sewage sampling pipeline via a pipe, and the sewage outlet of the filtration unit is connected to a sewage pipeline. The filtration unit is connected to a heat exchange unit, that is, the filtrate outlet of the filtration unit is connected to the sewage pipeline in the heat exchange unit, and the flow tank is connected to the sewage outlet of the heat exchange unit, and the flow tank is connected to the sewage pipeline. The pH meter is located in the flow-through tank and is electrically connected to an instrument switch. The flow-through tank is equipped with a lifting unit for raising and lowering the pH meter and a cleaning unit for cleaning the pH meter probe. The dual-wash wastewater online sampling system also includes a control unit, which is electrically connected to the lifting unit and the cleaning unit via wires. The control unit controls the opening and closing of the lifting unit and the cleaning unit. The feed pipe of the cleaning unit is connected to a cleaning medium supply tank, and the discharge pump in the cleaning medium supply tank is electrically connected to the control unit. The wastewater pipes of the steam unit and the heat exchange unit are connected.

[0019] It should be noted that: wastewater is collected and discharged into the filtration unit via a sampling pipeline, where it is filtered. By opening the drain valve of the filtration unit, the filtered wastewater and its residue can be discharged into the drain pipeline. The filtered wastewater is then heated by the heat exchange unit and enters the flow tank, where it is measured by a pH meter. At regular intervals, the pH meter is raised and removed from the wastewater in the flow tank by a lifting unit. Subsequently, a cleaning medium supply tank supplies cleaning medium to the cleaning unit, which cleans the pH meter probe. This eliminates the potential for inaccurate pH readings due to impurities adhering to the pH meter electrode. By constructing a dynamic electrode cleaning strategy for the pH meter, the sampling system achieves efficient self-cleaning and accurate measurement, significantly improving the reliability of wastewater treatment process monitoring. In addition, the lifting unit can also precisely adjust the insertion depth of the pH electrode to meet the depth requirements under different liquid levels and detection scenarios. The specific flow path of the sewage is as follows: Sampling pipeline → Filtration unit → Heat exchange unit (sewage pipeline) → Pressure gauge → Thermometer → Flow tank (measured by pH meter) → Flow meter → Sewage discharge pipeline; Each time a pH meter test is performed, the corresponding chemical treatment reagents are added to the wastewater tank. Then, the wastewater is sampled again using the sampling pipeline, and then the pH meter is used again to test whether the wastewater meets the testing standards. After each addition of chemical treatment reagents, wastewater sampling is paused, and the steam unit is activated to clean the wastewater pipeline with steam. The steam unit is the steam supply pipeline. The valve is opened to allow steam to flow into the wastewater pipeline in the heat exchange unit, then into the flow tank, and finally into the discharge pipeline. This process cleans the pipeline to reduce residual dirt and prevents residual dirt from affecting the accuracy of pH meter readings during the next wastewater test. The specific flow path of its steam is as follows: Steam unit (steam supply pipeline) → heat exchange unit (sewage pipeline) → pressure gauge → temperature gauge → flow tank → flow meter → sewage discharge pipeline.

[0020] It should also be noted that: the filter unit in this application can be a self-cleaning basket filter of model SBL-100-1.0, the lifting unit can be an electric linear actuator of model DCL-300-500, and the cleaning unit can be a high-pressure miniature cleaning nozzle assembly of model QY-WX-08. However, this application is not limited to the above components, and other components can be selected according to the requirements, which will not be elaborated here.

[0021] In addition, the cleaning medium stored in the cleaning medium supply tank can be either clean water or cleaning gas, depending on the specific requirements.

[0022] Furthermore, pressure gauges and thermometers are installed on the pipes between the wastewater outlet of the heat exchange unit and the flow tank, and flow meters are installed on the pipes between the flow tank and the sewage pipeline. The pressure gauges, thermometers, and flow meters can detect the pressure, temperature, and flow rates of the pipelines.

[0023] In the embodiments of this utility model, please refer to Figure 1 The heat exchange unit includes a first condenser and a second condenser, both of which are connected to cooling water supply lines. The outlets of both the first and second condensers are connected to cooling water discharge lines. Ball valves are installed in the pipes connecting the first and second condensers, the pipes between the first condenser and the cooling water supply and discharge lines, and the pipes between the second condenser and the cooling water supply and discharge lines.

[0024] It should be noted that when the sewage enters the heat exchange unit, the cooling water supply pipeline is turned on so that the cooling water supply pipeline supplies condensate to the first condenser and the second condenser, so that the sewage can exchange heat in the heat exchange unit. The condensate supplied by the first condenser and the second condenser is discharged outside through the cooling water discharge pipeline. In this application, the first condenser and the second condenser can be connected to each other via a ball valve or used individually, thus allowing for flexible combination according to the amount of sewage. Furthermore, if one set of condensers is damaged, the other set of condensers can still be used.

[0025] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dual-wash wastewater online sampling system, characterized in that, include: Sampling pipeline; The filter unit is connected to the wastewater sampling pipeline via a pipe, and the wastewater outlet of the filter unit is connected to a wastewater discharge pipeline. The filter unit is also connected to a heat exchange unit. A flow-through tank is connected to the wastewater outlet of the heat exchange unit and to the sewage pipeline. A pH meter is installed in a flow cell, and the flow cell is equipped with a lifting unit for raising and lowering the pH meter and a cleaning unit for cleaning the pH meter probe. A steam unit, which is connected to the sewage pipe of the heat exchange unit.

2. The online sampling system for dual-wash wastewater according to claim 1, characterized in that, The heat exchange unit includes a first condenser and a second condenser, and both the first condenser and the second condenser are connected to a cooling water supply pipeline, and the outlets of the first condenser and the second condenser are connected to a cooling water discharge pipeline. Ball valves are installed in the pipes connecting the first condenser and the second condenser, the pipes between the first condenser and the cooling water supply line and the cooling water discharge line, and the pipes between the second condenser and the cooling water supply line and the cooling water discharge line.

3. The online sampling system for dual-wash wastewater according to claim 1, characterized in that, Pressure gauges and temperature gauges are installed on the pipe between the wastewater outlet of the heat exchange unit and the flow tank.

4. The online sampling system for dual-wash wastewater according to claim 3, characterized in that, A flow meter is installed on the pipe between the flow pool and the sewage pipeline.

5. The online sampling system for dual-wash wastewater according to claim 1, characterized in that, The filtrate inlet of the filtration unit is connected to the sewage pipe in the heat exchange unit.

6. The online sampling system for dual-wash wastewater according to claim 1, characterized in that, The dual-wash wastewater online sampling system also includes a control unit, which is electrically connected to the lifting unit and the washing unit via wires, and controls the opening and closing of the lifting unit and the washing unit.

7. The online sampling system for dual-wash wastewater according to claim 6, characterized in that, The feed pipe of the cleaning unit is connected to a tank containing a cleaning medium supply, and the discharge pump in the cleaning medium supply tank is electrically connected to the control unit.

8. The online sampling system for dual-wash wastewater according to claim 1, characterized in that, The pH meter is electrically connected to an instrument switch.

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