An online water quality monitoring system suitable for a reclaimed water outlet

Abstract

The utility model discloses a water quality on -line monitoring system suitable for regenerated water outlet relates to regenerated water quality detection technical field, including pressure relief well and equipment room, the equipment room is located pressure relief well top, is provided with sampling subassembly in the pressure relief well, the sampling area is connected with analysis subassembly, the analysis subassembly sets up in the equipment room, and the regenerated water is deposited in the pressure relief well, the analysis subassembly includes the sampling of regenerated water sample sampling part, the substance analysis department for detecting the substance, temperature and the acidity and alkalinity in regenerated water and the content analysis department for the nitrogen, phosphorus, ammonia nitrogen and oxygen demand in regenerated water, the utility model discloses utilize the pressure relief well well room, well wall before regenerated water outlet, pre -buried integrated water quality on -line monitoring equipment house component, and the pressure relief well is built with integrated equipment house, uses solar energy power supply, can effectively reduce equipment house land occupation, reduces the disturbance to surrounding environment.

Description

Technical Field

[0001] This utility model relates to the field of reclaimed water quality testing technology, and in particular to an online water quality monitoring system suitable for reclaimed water discharge outlets. Background Technology

[0002] The use of reclaimed water is gradually becoming an important means of addressing water scarcity. As a widely available and low-cost water source, reclaimed water is widely used in industrial production, agricultural irrigation, and ecological replenishment. Especially in ecological replenishment, the introduction of reclaimed water provides crucial support for the restoration of aquatic ecosystems such as rivers and lakes.

[0003] However, as a crucial component of water receiving points, reclaimed water discharge outlets require rigorous monitoring and control to ensure compliance with environmental protection and ecological restoration requirements. Traditional water quality monitoring equipment typically necessitates the construction of dedicated monitoring rooms, which occupy a significant area and place considerable pressure on land use near the discharge outlets. Furthermore, the complex terrain near the outlets, lack of power supply, and susceptibility of monitoring equipment to external environmental interference also contribute to the difficulties in implementing reclaimed water quality monitoring.

[0004] Currently, most reclaimed water discharge outlets in municipal drainage systems are located downstream of major sewage outlets, at the confluence of tributaries and main streams, and in sensitive areas such as river mouths into lakes (or seas). The water quality in these areas directly affects the water quality of the receiving water bodies. Therefore, it is particularly important to install an efficient and stable online water quality monitoring system near the reclaimed water discharge outlets. Traditional water quality monitoring equipment installation often requires dedicated monitoring rooms and power systems, which poses many challenges to the construction of water quality monitoring systems in areas with limited land and sensitive environments. Therefore, this utility model provides an online water quality monitoring system suitable for reclaimed water discharge outlets. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model discloses an online water quality monitoring system suitable for reclaimed water discharge outlets, comprising a pressure relief well and an equipment room. The equipment room is located above the pressure relief well, and a sampling component is installed inside the pressure relief well. The sampling component is connected to an analysis component, and the analysis component is located inside the equipment room. Reclaimed water is stored in the pressure relief well. The analytical components include a sampling unit for sampling reclaimed water, a substance analysis unit for detecting substances, temperature, and pH in the reclaimed water, and a content analysis unit for analyzing nitrogen, phosphorus, ammonia nitrogen, and oxygen demand in the reclaimed water. The sampling unit includes an online sampler, and the content analysis unit includes an analyzer sample supply pipe. The two ends of the analyzer sample supply pipe are respectively connected to the outlet and return outlet of the online sampler.

[0006] Furthermore, the sampling assembly includes a sampling pump installed in a pressure relief well. A water intake pipe is fixedly installed at the inlet end of the sampling pump, and an inlet ball valve is fixedly installed on the water intake pipe. A water delivery pipe is fixedly connected to the outlet end of the sampling pump. A one-way valve is fixedly installed at one end of the water delivery pipe, and a second water delivery pipe is fixedly installed on the one-way valve. A second inlet ball valve is fixedly installed at one end of the second water delivery pipe, and a third water delivery pipe is fixedly installed on the second inlet ball valve.

[0007] Furthermore, the sampling component also includes a water inlet tee, which is fixedly installed on the water supply pipe, and an outlet pipe is fixedly installed on the water inlet tee, and a faucet is fixedly installed on the outlet pipe.

[0008] Furthermore, the online sampler is installed in the equipment room. A water inlet pipe five is fixedly installed on the water inlet of the online sampler. One end of the water inlet pipe five is fixedly connected to one end of the water delivery pipe three. A pressure relief pipe is fixedly installed on the water inlet pipe five. A water inlet pressure relief valve is fixedly installed on the pressure relief pipe. One end of the pressure relief pipe extends out of the equipment room. A refrigerator condenser box is installed inside the online sampler. A drain pipe is fixedly installed on the refrigerator condenser box. One end of the drain pipe extends out of the equipment room.

[0009] Furthermore, the material analysis unit includes an instrument-supported flow-through bracket 1. A water supply pipe 4 is fixedly installed at one end of the instrument-supported flow-through bracket 1. An inlet ball valve 3 is fixedly installed on the water supply pipe 4. The water supply pipe 4 is connected to the water supply pipe 3 through an inlet tee 2. An outlet pipe 2 is fixedly installed at the other end of the instrument-supported flow-through bracket 1. An outlet ball valve 1 is fixedly installed on the outlet pipe 2. One end of the outlet pipe 2 is located in a pressure relief well. A connecting hose 1 is fixedly connected to the instrument-supported flow-through bracket 1. A pH / T is fixedly connected to one end of the connecting hose 1. The pH / T is located in the equipment room.

[0010] Furthermore, the material analysis unit also includes an instrument-supported flow-through bracket two. One end of the instrument-supported flow-through bracket two is fixedly installed with a water supply pipe five, and an inlet ball valve five is fixedly installed on the water supply pipe five. The water supply pipe five is connected to the water supply pipe three through an inlet tee three. The other end of the instrument-supported flow-through bracket two is fixedly installed with an outlet pipe three, and an outlet ball valve two is fixedly installed on the outlet pipe three. The outlet pipe three is connected to the outlet pipe two through an outlet tee one. A connecting hose two is fixedly connected to the instrument-supported flow-through bracket two, and one end of the connecting hose two is fixedly connected to an SS. The SS is located in the equipment room.

[0011] Furthermore, the content analysis unit also includes TN and TP, both of which are located in the equipment room. The inlet and outlet of the TN are respectively fixedly connected to a water inlet hose one and a waste liquid hose one. One end of the water inlet hose one is connected to the analyzer's sample supply pipeline through a sample supply tee one. One end of the waste liquid hose one is fixedly connected to a waste liquid discharge pipeline, which extends outside the equipment room. The inlet and outlet of the TP are respectively fixedly connected to a water inlet hose two and a waste liquid hose two. One end of the water inlet hose two is connected to the analyzer's sample supply pipeline through a sample supply tee two. One end of the waste liquid hose two is fixedly connected to the waste liquid discharge pipeline.

[0012] Furthermore, the content analysis unit also includes NH3-N and COD, both of which are located in the equipment room. The inlet and outlet of the NH3-N are respectively connected to a water supply hose three and a waste liquid hose three. One end of the water supply hose three is connected to the analyzer's sample supply pipeline via a sample supply tee three, and one end of the waste liquid hose three is connected to the waste liquid discharge pipeline. The inlet and outlet of the COD are respectively connected to a water supply hose four and a waste liquid hose four. One end of the water supply hose four is connected to the analyzer's sample supply pipeline via a sample supply tee four, and the waste liquid hose four is connected to the waste liquid discharge pipeline.

[0013] The advantages of this utility model compared with the prior art are: This utility model utilizes the pressure relief well chamber and well wall before the reclaimed water discharge outlet to pre-embed integrated water quality online monitoring equipment room components, and combines the pressure relief well with the integrated equipment room. It uses solar power, which can effectively reduce the land occupied by the equipment room and reduce the disturbance to the surrounding environment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pipeline planar structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the elevation structure of this utility model.

[0016] Reference numerals: 1-Water intake pipe; 2-Inlet ball valve 1; 3-Sampling pump; 4-Water delivery pipe 1; 5-Check valve; 6-Inlet ball valve 2; 7-Water delivery pipe 2; 8-Water delivery pipe 3; 9-Inlet tee 1; 10-Faucet; 11-Outlet pipe 1; 12-Inlet tee 2; 13-Water delivery pipe 4; 14-Inlet ball valve 3; 15-Instrument matching flow-through bracket 1; 16-Outlet pipe 2; 17-Outlet ball valve 1; 18-Water delivery pipe 5; 19-Inlet ball valve 5; 20-Outlet pipe 3; 21-Outlet ball valve 2; 22-PH / T; 23-SS; 24-Inlet tee 3; 25-Outlet tee 1; 26-Inlet pipe 5; 27-Inlet switch valve; 28-Online sampling... Sample instrument; 29-Analyzer sample supply pipeline; 30-Sample supply tee one; 31-Inlet water hose one; 32-TN; 33-Waste liquid hose one; 34-Waste liquid discharge pipeline; 35-Inlet water hose two; 36-Sample supply tee two; 37-TP; 38-Waste liquid hose two; 39-Sample supply tee three; 40-Inlet water hose three; 41-NH3-N; 42-Waste liquid hose three; 43-Sample supply tee four; 44-Inlet water hose four; 45-COD; 46-Waste liquid hose four; 47-Pressure relief pipeline; 48-Inlet water pressure relief valve; 49-Refrigerator condenser box; 50-Drainage pipeline; 51-Instrument matching flow-through bracket two; 52-Connecting hose one; 53-Connecting hose two; 54-Pressure relief well; 55-Equipment room. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Example: Figure 1 , Figure 2 As shown, an online water quality monitoring system suitable for reclaimed water discharge outlets is disclosed. The system is powered by solar energy and includes a pressure relief well 54 and an equipment room 55. The equipment room 55 is located above the pressure relief well 54. A sampling component is installed inside the pressure relief well 54, and the sampling component is connected to an analysis component. The analysis component is located inside the equipment room 55. Reclaimed water is stored in the pressure relief well 54. The analysis component includes a sampling unit for reclaimed water sampling, a substance analysis unit for detecting substances, temperature, and pH in the reclaimed water, and a content analysis unit for analyzing nitrogen, phosphorus, ammonia nitrogen, and oxygen demand in the reclaimed water. The sampling unit includes an online sampler 28, and the content analysis unit includes an analyzer supply pipe 29. The two ends of the analyzer supply pipe 29 are connected to the outlet and return outlet of the online sampler 28, respectively. Through this scheme, the analysis component detects the water quality parameters of the reclaimed water. By combining the equipment room 55 and the pressure relief well 54, the footprint of the equipment room is reduced, and the disturbance to the surrounding environment is minimized.

[0021] The sampling assembly includes a sampling pump 3, which is installed inside a pressure relief well 54. A water intake pipe 1 is fixedly installed at the inlet end of the sampling pump 3, and an inlet ball valve 2 is fixedly installed on the water intake pipe 1. A water delivery pipe 4 is fixedly connected to the outlet end of the sampling pump 3, and a one-way valve 5 is fixedly installed at one end of the water delivery pipe 4. A second water delivery pipe 7 is fixedly installed on the one-way valve 5, and an inlet ball valve 6 is fixedly installed at one end of the second water delivery pipe 7. The sampling assembly includes a water supply pipe 3 8 and an inlet tee 9. The inlet tee 9 is fixedly installed on the water supply pipe 3 8. An outlet pipe 11 is fixedly installed on the inlet tee 9. A faucet 10 is fixedly installed on the outlet pipe 11. The faucet 10 allows external personnel to take small amounts of reclaimed water. Through the above scheme, the sampling pump 3 delivers the reclaimed water in the pressure relief well 54 to the analysis assembly, which then detects and analyzes the water quality parameters of the reclaimed water.

[0022] The online sampler 28 is installed in the equipment room 55. A water inlet pipe 26 is fixedly installed on the water inlet of the online sampler 28. One end of the water inlet pipe 26 is fixedly connected to one end of the water supply pipe 8. A pressure relief pipe 47 is fixedly installed on the water inlet pipe 26. A water inlet pressure relief valve 48 is fixedly installed on the pressure relief pipe 47. One end of the pressure relief pipe 47 extends out of the equipment room 55. A refrigerator condenser box 49 is installed inside the online sampler 28. A drain pipe 50 is fixedly installed on the refrigerator condenser box 49 to facilitate the discharge of condensate water in the refrigerator condenser box 49. One end of the drain pipe 50 extends out of the equipment room 55. Through the above scheme, the online sampler 28 performs sampling and analysis. The pressure relief pipe 47 and the water inlet pressure relief valve 48 ensure that the water pressure in the water inlet pipe 26 is always within a stable range.

[0023] The material analysis unit includes an instrument-supported flow-through bracket 15. A water supply pipe 13 is fixedly installed at one end of the instrument-supported flow-through bracket 15, and an inlet ball valve 14 is fixedly installed on the water supply pipe 13. The water supply pipe 13 is connected to the water supply pipe 8 via an inlet tee 12. An outlet pipe 16 is fixedly installed at the other end of the instrument-supported flow-through bracket 15, and an outlet ball valve 17 is fixedly installed on the outlet pipe 16. One end of the outlet pipe 16 is located at a drain... Inside the well 54, a connecting hose 52 is fixedly connected to the instrument-equipped flow-through bracket 15. One end of the connecting hose 52 is fixedly connected to a PH / T22. The PH / T22 is located in the equipment room 55. Through the above scheme, water enters the instrument-equipped flow-through bracket 15 from the water supply pipe 4 13, and then enters the PH / T22 through the connecting hose 52. The PH / T22 detects the temperature and pH of the regenerated water, and then the water is discharged from the outlet pipe 2 16.

[0024] The material analysis section also includes an instrument-supported flow-through bracket 2 51. A water supply pipe 5 18 is fixedly installed at one end of the instrument-supported flow-through bracket 2 51, and an inlet ball valve 5 19 is fixedly installed on the water supply pipe 5 18. The water supply pipe 5 18 is connected to the water supply pipe 3 8 via an inlet tee 3 24. An outlet pipe 3 20 is fixedly installed at the other end of the instrument-supported flow-through bracket 2 51, and an outlet ball valve 2 21 is fixedly installed on the outlet pipe 3 20. The outlet pipe 3 20 is connected to the outlet pipe via an outlet tee 1 25. The instrument is connected to a flow-through support 251 with a connecting hose 253 fixedly connected to it. One end of the connecting hose 253 is fixedly connected to SS23. SS23 is located in the equipment room 55. Through the above scheme, water enters the instrument's flow-through support 251 from the water supply pipe 518, and then enters SS23 through the connecting hose 253. SS23 detects the suspended solids content in the reclaimed water. Then, the water enters the outlet pipe 26 from the outlet pipe 320 through the outlet tee 125 and is discharged.

[0025] The content analysis unit also includes TN32 and TP37, both of which are located within the equipment room 55. The inlet and outlet of TN32 are respectively fixedly connected to a water inlet hose 31 and a waste liquid hose 33. One end of the water inlet hose 31 is connected to the analyzer's sample supply pipeline 29 via a sample supply tee 30. One end of the waste liquid hose 33 is fixedly connected to a waste liquid discharge pipeline 34, which extends outside the equipment room 55. The inlet and outlet of TP37 are respectively fixedly connected to a second water inlet hose 35 and a second waste liquid hose 38. One end of the second water inlet hose 35 is connected to the analyzer's sample supply pipeline 29 via a sample supply tee 30. 36. One end of the waste liquid hose 28 is fixedly connected to the waste liquid discharge pipeline 34. Through the above scheme, the water sampled by the online sampler 28 enters the analyzer's sample supply pipeline 29. Then, the water enters the inlet hose 1 31 and the inlet hose 2 35 through the sample supply tee 1 30 and the sample supply tee 2 36, respectively. The inlet hose 1 31 transports the water to TN 32, and the inlet hose 2 35 transports the water to TP 37. TN 32 analyzes the nitrogen content of the water, and the inlet hose 2 35 analyzes the phosphorus content of the water. The wastewater after analysis in TN 32 and TP 37 enters the waste liquid discharge pipeline 34 through the waste liquid hose 1 33 and the waste liquid hose 2 38, respectively, and is discharged.

[0026] The content analysis unit also includes NH3-N and COD45, both of which are located in the equipment room 55. The inlet and outlet of the NH3-N are connected to a water supply hose 3 40 and a waste liquid hose 3 42, respectively. One end of the water supply hose 3 40 is connected to the analyzer's sample supply pipeline 29 via a sample supply tee 3 39. One end of the waste liquid hose 3 42 is connected to the waste liquid discharge pipeline 34. The inlet and outlet of the COD45 are connected to a water supply hose 44 and a waste liquid hose 46, respectively. One end of the water supply hose 44 is connected to the analyzer's sample supply pipeline 29 via a sample supply tee 4 43. The waste liquid hose 46... 6. Connected to waste liquid discharge pipeline 34, the water sampled by the online sampler 28 enters the analyzer's sample supply pipeline 29 through the above scheme. Then, the water enters the water supply hose 30 and water supply hose 44 through the sample supply tee 39 and sample supply tee 43 respectively. The water supply hose 340 delivers the water to the NH3-N container, and the water supply hose 44 delivers the water to the COD45 container. The NH3-N container analyzes the ammonia nitrogen content in the reclaimed water, and the COD45 container analyzes the chemical oxygen demand in the reclaimed water. After the analysis in the NH3-N and COD45 containers, the wastewater enters the waste liquid discharge pipeline 34 through the waste liquid hose 32 and waste liquid hose 46 respectively and is discharged.

[0027] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A water quality online monitoring system suitable for reclaimed water discharge outlets, comprising a pressure relief well (54) and an equipment room (55), wherein the equipment room (55) is located above the pressure relief well (54), characterized in that: A sampling component is installed in the pressure relief well (54), and the sampling component is connected to an analysis component. The analysis component is installed in the equipment room (55), and the pressure relief well (54) contains reclaimed water. The analytical components include a sampling unit for sampling reclaimed water, a substance analysis unit for detecting substances, temperature and pH in reclaimed water, and a content analysis unit for analyzing nitrogen, phosphorus, ammonia nitrogen and oxygen demand in reclaimed water. The sampling unit includes an online sampler (28), and the content analysis unit includes an analyzer sample supply pipe (29). The two ends of the analyzer sample supply pipe (29) are connected to the outlet and return outlet of the online sampler (28), respectively.

2. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 1, characterized in that: The sampling assembly includes a sampling pump (3), which is installed in a pressure relief well (54). A water intake pipe (1) is fixedly installed at the water inlet of the sampling pump (3). A water inlet ball valve (2) is fixedly installed on the water intake pipe (1). A water delivery pipe (4) is fixedly connected to the water outlet of the sampling pump (3). A one-way valve (5) is fixedly installed at one end of the water delivery pipe (4). A second water delivery pipe (7) is fixedly installed on the one-way valve (5). A second water inlet ball valve (6) is fixedly installed at one end of the second water delivery pipe (7). A third water delivery pipe (8) is fixedly installed on the second water inlet ball valve (6).

3. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 2, characterized in that: The sampling assembly also includes a water inlet tee (9), which is fixedly installed on the water supply pipe (8), and a water outlet pipe (11) is fixedly installed on the water inlet tee (9), and a faucet (10) is fixedly installed on the water outlet pipe (11).

4. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 3, characterized in that: The online sampler (28) is installed in the equipment room (55). A water inlet pipe (26) is fixedly installed on the water inlet of the online sampler (28). One end of the water inlet pipe (26) is fixedly connected to one end of the water delivery pipe (8). A pressure relief pipe (47) is fixedly installed on the water inlet pipe (26). A water inlet pressure relief valve (48) is fixedly installed on the pressure relief pipe (47). One end of the pressure relief pipe (47) extends out of the equipment room (55). A refrigerator condenser box (49) is installed inside the online sampler (28). A drain pipe (50) is fixedly installed on the refrigerator condenser box (49). One end of the drain pipe (50) extends out of the equipment room (55).

5. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 4, characterized in that: The material analysis unit includes an instrument-supported flow-through bracket (15), one end of which is fixedly installed with a water supply pipe (13), and an inlet ball valve (14) is fixedly installed on the water supply pipe (13). The water supply pipe (13) is connected to the water supply pipe (8) through an inlet tee (12). The other end of the instrument-supported flow-through bracket (15) is fixedly installed with an outlet pipe (16), and an outlet ball valve (17) is fixedly installed on the outlet pipe (16). One end of the outlet pipe (16) is located in a pressure relief well (54). A connecting hose (52) is fixedly connected to the instrument-supported flow-through bracket (15), and a pH / T (22) is fixedly connected to one end of the connecting hose (52). The pH / T (22) is located in the equipment room (55).

6. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 5, characterized in that: The material analysis section also includes an instrument-supported flow-through bracket two (51). One end of the instrument-supported flow-through bracket two (51) is fixedly installed with a water supply pipe five (18). A water inlet ball valve five (19) is fixedly installed on the water supply pipe five (18). The water supply pipe five (18) is connected to the water supply pipe three (8) through a water inlet tee three (24). The other end of the instrument-supported flow-through bracket two (51) is fixedly installed with an outlet pipe three (20). An outlet ball valve two (21) is fixedly installed on the outlet pipe three (20). The outlet pipe three (20) is connected to the outlet pipe two (16) through an outlet tee one (25). A connecting hose two (53) is fixedly connected to the instrument-supported flow-through bracket two (51). One end of the connecting hose two (53) is fixedly connected to an SS (23). The SS (23) is located in the equipment room (55).

7. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 6, characterized in that: The content analysis unit also includes TN (32) and TP (37). Both TN (32) and TP (37) are located in the equipment room (55). The inlet and outlet of TN (32) are respectively fixedly connected to a water inlet hose 1 (31) and a waste liquid hose 1 (33). One end of the water inlet hose 1 (31) is connected to the analyzer sample supply pipeline (29) through a sample supply tee 1 (30). One end of the waste liquid hose 1 (33) is fixedly connected to a waste liquid discharge pipeline (34). The waste liquid discharge pipeline (34) extends out of the equipment room (55). The inlet and outlet of TP (37) are respectively fixedly connected to a water inlet hose 2 (35) and a waste liquid hose 2 (38). One end of the water inlet hose 2 (35) is connected to the analyzer sample supply pipeline (29) through a sample supply tee 2 (36). One end of the waste liquid hose 2 (38) is fixedly connected to the waste liquid discharge pipeline (34).

8. The online water quality monitoring system for reclaimed water discharge outlets as described in claim 7, characterized in that: The content analysis unit also includes NH3-N and COD (45). Both NH3-N and COD (45) are located in the equipment room (55). The inlet and outlet of NH3-N are connected to a water supply hose three (40) and a waste liquid hose three (42), respectively. One end of the water supply hose three (40) is connected to the analyzer's sample supply pipeline (29) through a sample supply three-way three (39). One end of the waste liquid hose three (42) is connected to the waste liquid discharge pipeline (34). The inlet and outlet of COD (45) are connected to a water supply hose four (44) and a waste liquid hose four (46), respectively. One end of the water supply hose four (44) is connected to the analyzer's sample supply pipeline (29) through a sample supply three-way four (43). The waste liquid hose four (46) is connected to the waste liquid discharge pipeline (34).

Images