Wastewater sampling and detecting system for total discharge pool of thermal power plant

Abstract

The utility model discloses a thermal power plant total discharge pool waste water sampling detection system, it includes sampling unit and detection unit, the sampling unit includes buffer pool, water outlet pipe and drive pump, the buffer pool is provided above the total discharge pool, the upper end of water outlet pipe is communicated with the buffer pool, the lower end is communicated with the total discharge pool, the drive pump is provided with drive pump, and the drive pump is provided with drive pump. The inlet end of the driving pump is communicated with the main discharge pool, and the outlet end of the driving pump is communicated with the buffer pool, so that wastewater in the main discharge pool is pumped into the buffer pool; the detection unit comprises a COD (Chemical Oxygen Demand) detector and a PH detector. The sampling and detecting system has the beneficial effects that the sampling and detecting system does not need to manually sample wastewater in the total discharge pool, so that the problem of inconvenience in manual sampling is avoided, the COD (Chemical Oxygen Demand) value and the pH value of the wastewater in the total discharge pool can be detected in real time, more accurate detection data can be provided, and the phenomenon that the wastewater in the total discharge pool cannot be detected due to improper detection is avoided. The COD (Chemical Oxygen Demand) value and the pH value of the wastewater discharged into the municipal pipe network do not meet the discharge standard.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater detection, in particular to a wastewater sampling and detection system for a main drainage pool of a thermal power plant. Background Art

[0002] The composition of wastewater generated by thermal power plants is relatively complex, which will cause serious pollution to the soil and water sources and affect the health of humans and animals. Therefore, the wastewater needs to be purified before discharge to meet the discharge standards. The purified water enters the main drainage pool, and the wastewater in the main drainage pool is sampled to detect the COD value and pH value. When the COD value and pH value meet the discharge standards, the water pump is turned on to pump the water in the main drainage pool into the municipal pipe network for discharge.

[0003] Existing methods for sampling and testing wastewater from a power plant's main drainage pool (such as a wastewater sampling device for a power plant's wastewater pool disclosed in application number 202120466278.3) generally involve obtaining wastewater samples from the main drainage pool through a sampler, and then testing the COD value of the wastewater through a COD detector and testing the pH value of the wastewater through a pH detector. On the one hand, the main drainage pool is generally a cement pool built below the ground, which causes inconvenience in sampling. On the other hand, the above-mentioned detection method can only detect the COD value and pH value of the wastewater at a certain time point, and cannot detect the COD value and pH value of the wastewater in the main drainage pool in real time. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a wastewater sampling and detection system for the main drainage pool of a thermal power plant to solve the technical problems in the existing technology of inconvenience in sampling wastewater and inability to perform real-time detection of the COD value and pH value of the wastewater in the main drainage pool.

[0005] To achieve the above technical objectives, the technical solution of the present utility model provides a wastewater sampling and detection system for the main drainage pool of a thermal power plant, comprising:

[0006] The sampling unit includes a buffer tank, an outlet pipe, and a driving pump. The buffer tank is arranged above the main drainage tank. The upper end of the outlet pipe is connected to the buffer tank, and the lower end is connected to the main drainage tank. The inlet end of the driving pump is connected to the main drainage tank, and the outlet end is connected to the buffer tank, so as to pump the wastewater in the main drainage tank into the buffer tank.

[0007] The detection unit includes a COD detector and a pH detector. The COD detector and the pH detector are both connected to the outlet pipe and are used to respectively detect the COD value and pH value of the wastewater in the outlet pipe in real time.

[0008] Furthermore, the sampling unit further includes a first sampling tube, which is horizontally arranged, one end of which is connected to the water outlet pipe, and the COD detector is connected to the other end of the first sampling tube.

[0009] Furthermore, the sampling unit also includes a second sampling tube, which is horizontally arranged below the first sampling tube, one end of the second sampling tube is connected to the water outlet pipe, and the pH detector is connected to the other end of the second sampling tube.

[0010] Furthermore, the sampling unit also includes a water inlet pipe, the upper end of the water inlet pipe is connected to the buffer pool, and the outlet end of the driving pump is connected to the lower end of the water inlet pipe.

[0011] Furthermore, the sampling unit also includes an overflow pipe, the upper end of which is connected to the buffer pool, and the lower end of which is connected to the main drainage pool.

[0012] Furthermore, the sampling unit also includes a drain pipe, the upper end of which is connected to the buffer pool, and the lower end of which is connected to the main drain pool.

[0013] Furthermore, the sampling unit further includes a plurality of valves, each of which is respectively arranged on the first sampling tube, the second sampling tube, the water inlet pipe and the drain pipe.

[0014] Furthermore, the buffer pool is provided with a water inlet, an overflow port, a water outlet and a drain port from top to bottom, the water outlet is located in the middle of the buffer pool, the upper end of the water inlet pipe is connected to the water inlet, the upper end of the overflow pipe is connected to the overflow port, the upper end of the water outlet pipe is connected to the water outlet, and the upper end of the drain pipe is connected to the drain port.

[0015] Furthermore, the wastewater sampling and detection system for the main drainage pool of a thermal power plant also includes a constant temperature room, the COD detector is located in the constant temperature room, and the other end of the first sampling tube extends into the constant temperature room.

[0016] Furthermore, the thermal power plant main drain pool wastewater sampling and detection system also includes a control unit, which is electrically connected to the COD detector and the pH detector to obtain the COD value and pH value detected by the COD detector and the pH detector.

[0017] Compared with the prior art, the beneficial effects of the present invention include: when in use, the driving pump is turned on, and the driving pump can pump the wastewater in the main drainage pool into the buffer pool, and the wastewater in the buffer pool flows into the outlet pipe and flows back into the main drainage pool. The wastewater flows into the outlet pipe and enters the COD detector and the PH detector, so that the COD value of the wastewater in the outlet pipe can be detected in real time by the COD detector, and the pH value of the wastewater in the outlet pipe can be detected in real time by the PH detector. This sampling and detection system does not need to manually sample the wastewater in the main drainage pool, avoiding the inconvenience of manual sampling, and can detect the COD value and pH value of the wastewater in the main drainage pool in real time, and provide more accurate detection data, avoiding the problem that the COD value and pH value of the wastewater discharged into the municipal pipeline network do not meet the emission standards due to inadequate detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of a wastewater sampling and detection system for a thermal power plant main drainage pool provided by the utility model when it is connected to the main drainage pool;

[0019] Figure 2 This is a three-dimensional structural diagram of a wastewater sampling and detection system for a thermal power plant main drainage pool provided by the utility model;

[0020] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of a wastewater sampling and detection system for a thermal power plant main drainage pool from another perspective;

[0021] Figure 4 yes Figure 2 A schematic diagram of the three-dimensional structure of a wastewater sampling and detection system for a thermal power plant main drainage pool omitting the constant temperature room;

[0022] In the figure: 1 - main drainage pool, 100 - sampling unit, 110 - buffer pool, 111 - water inlet, 112 - overflow, 113 - water outlet, 114 - drain outlet, 120 - outlet pipe, 130 - first sampling pipe, 140 - second sampling pipe, 150 - water inlet pipe, 160 - overflow pipe, 170 - drain pipe, 180 - valve, 200 - detection unit, 210 - COD detector, 220 - PH detector, 300 - constant temperature room. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The utility model provides a wastewater sampling and detection system for the main drainage pool of a thermal power plant, the structure of which is as follows: Figure 1 - Figure 4 As shown, it includes a sampling unit 100 and a detection unit 200. The sampling unit 100 includes a buffer tank 110, an outlet pipe 120 and a driving pump. The buffer tank 110 is arranged above the main drainage tank 1. The upper end of the outlet pipe 120 is connected to the buffer tank 110, and the lower end is connected to the main drainage tank 1. The inlet end of the driving pump is connected to the main drainage tank 1, and the outlet end is connected to the buffer tank 110, so as to pump the wastewater in the main drainage tank 1 into the buffer tank 110; the detection unit 200 includes a COD detector 210 and a pH detector 220. The COD detector 210 and the pH detector 220 are both connected to the outlet pipe 120, and are used to detect the COD value and pH value of the wastewater in the outlet pipe 120 in real time.

[0025] When in use, the driving pump is turned on, and the driving pump can pump the wastewater in the main drainage pool 1 into the buffer pool 110. The wastewater in the buffer pool 110 flows into the outlet pipe 120 and flows back into the main drainage pool 1. The wastewater flows into the outlet pipe 120 and enters the COD detector 210 and the PH detector 220, so that the COD value of the wastewater in the outlet pipe 120 can be detected in real time by the COD detector 210, and the pH value of the wastewater in the outlet pipe 120 can be detected in real time by the PH detector 220. This sampling and detection system does not need to manually sample the wastewater in the main drainage pool 1, thus avoiding the inconvenience of manual sampling. It can detect the COD value and pH value of the wastewater in the main drainage pool 1 in real time, and provide more accurate detection data, thereby avoiding the problem that the COD value and pH value of the wastewater discharged into the municipal pipe network do not meet the emission standards due to inadequate detection.

[0026] As a preferred embodiment, please refer to Figure 4 The sampling unit 100 also includes a first sampling tube 130, which is horizontally arranged. One end of the first sampling tube 130 is connected to the outlet pipe 120, and the COD detector 210 is connected to the other end of the first sampling tube 130, which can increase the retention time of wastewater in the COD detector 210 and improve the detection accuracy.

[0027] As a preferred embodiment, please refer to Figure 4 The sampling unit 100 also includes a second sampling tube 140, which is horizontally arranged below the first sampling tube 130. One end of the second sampling tube 140 is connected to the water outlet pipe 120, and the pH detector 220 is connected to the other end of the second sampling tube 140, which can increase the retention time of wastewater in the pH detector 220 and improve the detection accuracy.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 4 The sampling unit 100 also includes a water inlet pipe 150, the upper end of the water inlet pipe 150 is connected to the buffer pool 110, and the outlet end of the driving pump is connected to the lower end of the water inlet pipe 150. The driving pump can pump the wastewater in the total drainage pool 1 into the buffer pool 110 along the water inlet pipe 150.

[0029] As a preferred embodiment, please refer to Figure 2 and Figure 4 The sampling unit 100 also includes an overflow pipe 160, the upper end of which is connected to the buffer pool 110, and the lower end is connected to the main drainage pool 1. When there is a lot of wastewater in the buffer pool 110, it can flow into the main drainage pool 1 along the overflow pipe 160 to avoid the wastewater in the buffer pool 110 being too full.

[0030] As a preferred embodiment, please refer to Figure 2 and Figure 4 The sampling unit 100 also includes a drain pipe 170, the upper end of the drain pipe 170 is connected to the buffer pool 110, and the lower end is connected to the main drain pool 1. When the buffer pool 110 needs to be cleaned, the wastewater in the buffer pool 110 can be drained through the drain pipe 170 to clean the buffer pool 110.

[0031] As a preferred embodiment, please refer to Figure 2 and Figure 4 The sampling unit 100 also includes a plurality of valves 180, each of which is respectively arranged on the first sampling tube 130, the second sampling tube 140, the water inlet pipe 150 and the drainage pipe 170. Each valve 180 can control the opening and closing of the corresponding first sampling tube 130, the second sampling tube 140, the water inlet pipe 150 and the drainage pipe 170.

[0032] As a preferred embodiment, please refer to Figure 2 and Figure 4 The buffer pool 110 is provided with a water inlet 111, an overflow port 112, a water outlet 113 and a drain port 114 from top to bottom. The water outlet 113 is located in the middle of the buffer pool 110. The upper end of the water inlet pipe 150 is connected to the water inlet 111, the upper end of the overflow pipe 160 is connected to the overflow port 112, the upper end of the water outlet pipe 120 is connected to the water outlet 113, and the upper end of the drain pipe 170 is connected to the drain port 114. Some impurities in the wastewater will sink to the bottom of the buffer pool 110. Placing the water outlet 113 in the middle of the buffer pool 110 can prevent heavier impurities from entering the water outlet pipe 120 along the water outlet 113.

[0033] As a preferred embodiment, please refer to Figure 1 and Figure 2 The thermal power plant main drain pool wastewater sampling and detection system also includes a constant temperature room 300. The COD detector 210 is located in the constant temperature room 300. The other end of the first sampling tube 130 extends into the constant temperature room 300. The temperature in the constant temperature room 300 is maintained at about 25°C. Since the reagents involved in the reaction in the COD detector 210 require a light-proof environment, and some electronic components in the COD detector 210 require a temperature of about 25°C, the constant temperature room 300 is set to ensure the normal use of the COD detector 210. The buffer pool 110 is set on the roof of the constant temperature room 300.

[0034] As a preferred embodiment, the thermal power plant main drain pool wastewater sampling and detection system also includes a control unit, which is electrically connected to the COD detector 210 and the pH detector 220 to obtain the COD value and pH value detected by the COD detector 210 and the pH detector 220, so as to facilitate people to understand the wastewater discharge situation.

[0035] As a preferred embodiment, the COD detector 210 and the pH detector 220 are commercially available instruments and will not be described in detail in this solution.

[0036] In order to better understand the present invention, the following Figure 1 - Figure 4 The working principle of the technical solution of the utility model is described in detail:

[0037] When in use, the driving pump is turned on, and the driving pump can pump the wastewater in the total drainage pool 1 into the buffer pool 110 along the water inlet pipe 150. The wastewater in the buffer pool 110 flows into the outlet pipe 120 and flows back into the total drainage pool 1. The wastewater flows into the outlet pipe 120 and flows into the first sampling pipe 130 and the second sampling pipe 140. The wastewater in the first sampling pipe 130 enters the COD detector 210, and the wastewater in the second sampling pipe 140 enters the PH detector 220, so that the COD detector 210 can detect the wastewater in the outlet pipe 120 in real time. The COD value of the wastewater is detected in real time by the pH detector 220, and the COD value and pH value detected by the COD detector 210 and the pH detector 220 are obtained by the control unit, so that people can understand the wastewater discharge situation. The sampling and detection system does not need to manually sample the wastewater in the total drainage pool 1, thus avoiding the inconvenience of manual sampling. The COD value and pH value of the wastewater in the total drainage pool 1 can be detected in real time, and more accurate detection data can be provided to avoid the problem that the COD value and pH value of the wastewater discharged into the municipal pipe network do not meet the discharge standards due to inadequate detection.

[0038] The utility model provides a wastewater sampling and detection system for the main drainage pool of a thermal power plant, which has the following beneficial effects:

[0039] (1) Since the reagents involved in the reaction in the COD detector 210 need to be kept in a light-proof environment, and some electronic components in the COD detector 210 require a temperature of about 25°C, the constant temperature room 300 is set up and the temperature in the constant temperature room 300 is maintained at about 25°C to ensure the normal use of the COD detector 210;

[0040] (2) The first sampling tube 130 and the second sampling tube 140 are provided to increase the time that wastewater remains in the COD detector 210 and the pH detector 220, thereby improving detection accuracy;

[0041] (3) This sampling and detection system does not require manual sampling of the wastewater in the main drainage pool 1, thus avoiding the inconvenience of manual sampling. It can detect the COD value and pH value of the wastewater in the main drainage pool 1 in real time and provide more accurate detection data, thus avoiding the problem that the COD value and pH value of the wastewater discharged into the municipal pipe network do not meet the discharge standards due to inadequate detection.

[0042] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A wastewater sampling and detection system for the main drainage pool of a thermal power plant, characterized in that: include: The sampling unit includes a buffer tank, an outlet pipe, and a driving pump. The buffer tank is arranged above the main drainage tank. The upper end of the outlet pipe is connected to the buffer tank, and the lower end is connected to the main drainage tank. The inlet end of the driving pump is connected to the main drainage tank, and the outlet end is connected to the buffer tank, so as to pump the wastewater in the main drainage tank into the buffer tank. The detection unit includes a COD detector and a pH detector. The COD detector and the pH detector are both connected to the outlet pipe and are used to respectively detect the COD value and pH value of the wastewater in the outlet pipe in real time.

2. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 1 is characterized in that: The sampling unit further includes a first sampling tube, which is horizontally arranged. One end of the first sampling tube is connected to the water outlet pipe, and the COD detector is connected to the other end of the first sampling tube.

3. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 2 is characterized in that: The sampling unit further includes a second sampling tube, which is horizontally arranged below the first sampling tube. One end of the second sampling tube is connected to the water outlet pipe, and the pH detector is connected to the other end of the second sampling tube.

4. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 3 is characterized in that: The sampling unit further includes a water inlet pipe, the upper end of which is connected to the buffer pool, and the outlet end of the driving pump is connected to the lower end of the water inlet pipe.

5. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 4 is characterized in that: The sampling unit further includes an overflow pipe, the upper end of which is connected to the buffer pool, and the lower end of which is connected to the main drainage pool.

6. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 5 is characterized in that: The sampling unit further includes a drainage pipe, the upper end of which is connected to the buffer pool, and the lower end of which is connected to the main drainage pool.

7. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 6 is characterized in that: The sampling unit further includes a plurality of valves, each of which is respectively arranged on the first sampling tube, the second sampling tube, the water inlet pipe and the drain pipe.

8. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 6 is characterized in that: The buffer pool is provided with a water inlet, an overflow port, a water outlet and a drain port from top to bottom. The water outlet is located in the middle of the buffer pool. The upper end of the water inlet pipe is connected to the water inlet, the upper end of the overflow pipe is connected to the overflow port, the upper end of the water outlet pipe is connected to the water outlet, and the upper end of the drain pipe is connected to the drain port.

9. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 2 is characterized in that: It also includes a constant temperature room, the COD detector is located in the constant temperature room, and the other end of the first sampling tube extends into the constant temperature room.

10. The wastewater sampling and detection system for the main drainage pool of a thermal power plant according to claim 1 is characterized in that: It also includes a control unit, which is electrically connected to the COD detector and the pH detector to obtain the COD value and pH value detected by the COD detector and the pH detector.

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