Nitrate nitrogen and ammonia nitrogen cluster type monitoring device

Abstract

The invention discloses a nitrate nitrogen and ammonia nitrogen cluster type monitoring device, and belongs to the field of water quality detection. The nitrate nitrogen and ammonia nitrogen cluster type monitoring device comprises a device body, an ammonia nitrogen probe, a nitrate nitrogen probe and a protection part, the device body is connected with the protection part to form a cavity, and the ammonia nitrogen probe and the nitrate nitrogen probe are connected with the device body and arranged in the cavity; the ammonia nitrogen probe comprises a first electrode shell as well as a working electrode and a reference electrode which are arranged in the first electrode shell, and is used for detecting the ammonia nitrogen concentration; the nitrate nitrogen probe comprises a second electrode shell and an optical detection part connected with the second electrode shell, and is used for detecting the concentration of nitrate nitrogen; the protection part comprises a protection barrel and a protection tail cover connected with the protection barrel, and a filtering part is arranged on the protection barrel. The device is mainly used for shielding suspended particles in a water body and preventing microorganisms from forming a biological membrane on the probe, and the monitoring effect of the cluster type monitoring device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and more specifically to a cluster monitoring device for nitrate nitrogen and ammonia nitrogen. Background Art

[0002] In environmental water bodies, nitrate and ammonia are common water pollutants, mainly from agricultural fertilization, industrial wastewater and domestic sewage. Nitrate nitrogen or ammonia nitrogen concentrations that exceed the environmental capacity will lead to eutrophication of water bodies, trigger algal blooms and red tides, and seriously affect the balance of aquatic ecosystems. Sewage biochemical treatment is a process of removing organic matter and pollutants such as nitrogen and phosphorus from sewage through the metabolism of microorganisms through a combination of anaerobic, aerobic, and anoxic treatment units. Ammonia nitrogen and nitrate nitrogen are important water quality parameters, and their concentration changes reflect the efficiency of nitrification and denitrification processes. Therefore, simultaneous online monitoring of ammonia nitrogen and nitrate nitrogen concentrations is of great significance for water environment quality control and water treatment process optimization.

[0003] Monitoring methods for ammonia nitrogen and nitrate nitrogen include chemical colorimetry, spectrophotometry, electrode method, and ion chromatography. Current online monitoring equipment is mainly based on chemical colorimetry. For example, the Chinese patented automatic analyzer for nitrate, nitrite, orthophosphate, silicate, and ammonia nitrogen in water with publication number CN214374308U has the disadvantages of large size, high operation and maintenance costs, and secondary pollution. Ammonium ions (NH4 + ) Selective electrode (Ion-Selective Electrode, ISE), although the ion selective membrane needs to be replaced regularly, it is still the fastest, most convenient and economical means of online monitoring of ammonia nitrogen; in recent years, absorbance nitrate monitoring probes based on UVC-LED light sources, such as the Chinese patent with publication number CN215953347U, disclose a dissolved organic matter and nitrate geological monitoring probe, which has higher selectivity and stability than ion selective electrodes, and can also achieve low-power miniaturized probe design. Therefore, a miniature online monitoring device integrating ammonium ion selective electrode and absorbance nitrate probe can be developed.

[0004] However, both ion-selective electrodes and micro absorbance probes are susceptible to interference from microorganisms, suspended matter, etc. during actual application, which may affect monitoring. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] Aiming at the deficiency in the prior art that suspended particles in water and biofilm formed by microbial attachment may affect the monitoring of the monitoring device, a nitrate nitrogen and ammonia nitrogen cluster monitoring device is provided.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A nitrate nitrogen and ammonia nitrogen cluster monitoring device of the present invention,

[0010] It includes the device body, ammonia nitrogen probe, nitrate nitrogen probe and protective parts.

[0011] The device body is connected to the protective component to form a cavity.

[0012] The ammonia nitrogen probe and the nitrate nitrogen probe are respectively connected to the device body and placed in the cavity;

[0013] The ammonia nitrogen probe comprises a first electrode shell and a working electrode and a reference electrode arranged in the first electrode shell, and is used to detect the ammonia nitrogen concentration;

[0014] The nitrate nitrogen probe comprises a second electrode housing and an optical detection component connected to the second electrode housing, and is used to detect the nitrate nitrogen concentration;

[0015] The protection component comprises a protection cylinder and a protection tail cover connected to the protection cylinder, and a filtering component is arranged on the protection cylinder.

[0016] Furthermore, a vibration component is disposed in the protective tail cover, and the vibration component is used to generate vibration.

[0017] Furthermore, the filtering component comprises a filter screen, and the mesh number of the filter screen is 100 to 400 meshes.

[0018] Preferably, the filtering component is a filter.

[0019] Further, the first electrode shell includes a first front end cap and a first electrode shell cylinder;

[0020] The first front end cap is provided with a first microporous ceramic sand core.

[0021] Furthermore, the working electrode comprises an ion selective membrane, a porous end cap, a working electrode cylinder and a working electrode tail cap which are connected in sequence.

[0022] Furthermore, the working electrode is filled with NH4Cl solution as an electrolyte;

[0023] The reference electrode is filled with a saturated KCl solution;

[0024] The first electrode housing is filled with NaCl solution.

[0025] Furthermore, the working electrode also includes a first electrode wire, and the first electrode wire is passed through the working electrode tail cover.

[0026] Furthermore, the reference electrode comprises a second microporous ceramic sand core, a reference electrode cylinder, and a reference electrode tail cover which are connected in sequence.

[0027] Furthermore, the reference electrode also includes a second electrode wire, and the second electrode wire is passed through the reference electrode tail cover.

[0028] For example, the first electrode wire and the second electrode wire are both Ag / AgCl electrode wires.

[0029] Further, the second electrode shell includes a second front end cap and a second electrode shell cylinder;

[0030] The two ends of the optical detection component are respectively connected to the second front end cap and the second electrode shell cylinder.

[0031] Furthermore, the optical detection component includes a fixed column with a notch;

[0032] The side walls on both sides of the notch are respectively provided with a coaxial first through hole and a second through hole.

[0033] A first light-guiding quartz column and a photodiode are installed in the first through hole;

[0034] A second light-guiding quartz column and a UVC-LED light source are installed in the second through hole.

[0035] Furthermore, the first through hole includes a coaxial first light-transmitting hole and a first cavity.

[0036] The diameter of the first light-transmitting hole is smaller than the diameter of the first cavity.

[0037] The first cavity is used to install a photodiode, and the first light-transmitting hole is used to install a first light-guiding quartz column;

[0038] The second through hole includes a coaxial second light-transmitting hole and a second cavity,

[0039] The diameter of the second light-transmitting hole is smaller than the diameter of the second cavity.

[0040] The second cavity is used to install a UVC-LED light source, and the second light-transmitting hole is used to install a second light-guiding quartz column.

[0041] Furthermore, the UVC-LED light source internally encapsulates a light-emitting chip 1 that emits ultraviolet light with a wavelength of 230±5nm and a light-emitting chip 2 that emits ultraviolet light with a wavelength of 275±5nm.

[0042] Furthermore, the reference electrode is connected to one side of the working electrode.

[0043] Furthermore, the vibration components are a plurality of ultrasonic vibrators.

[0044] Furthermore, the protective component is a protective cover, and filters are arranged around the protective cover.

[0045] Furthermore, the device body includes a circuit main board.

[0046] Furthermore, the circuit main board includes a single-chip microcomputer chip and its auxiliary circuits, a power management circuit, an RS485 communication circuit, two independent LED drive circuits, a photodiode signal amplifier circuit, an ion selective electrode signal amplifier circuit and a vibration component drive circuit.

[0047] Furthermore, the first electrode wire in the working electrode and the second electrode wire in the reference electrode are connected to a circuit main board.

[0048] For example, by welding.

[0049] Furthermore, the UVC-LED light source and the photodiode are connected to the circuit main board through wires.

[0050] 3. Beneficial effects

[0051] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0052] (1) The present invention provides a cluster-type monitoring device for nitrate nitrogen and ammonia nitrogen. The ammonia nitrogen probe and the nitrate nitrogen probe are placed in a cavity formed by connecting the device body and the protective component. A filter component is provided on the protective cylinder of the protective component. Water enters the cavity through the filter component. When the ammonia nitrogen and nitrate nitrogen therein are monitored, the influence of suspended particles in the water on the ammonia nitrogen probe and the nitrate nitrogen probe can be shielded, which is beneficial to improving the monitoring effect of the cluster-type monitoring device.

[0053] (2) In the nitrate nitrogen and ammonia nitrogen cluster monitoring device provided by the present invention, a vibration component is arranged in the protective tail cover, and the vibration component is used to generate vibration to clean the filter component, the ammonia nitrogen probe and the nitrate nitrogen probe, thereby preventing microorganisms from forming biofilms on the ammonia nitrogen probe and the nitrate nitrogen probe, clogging the probes and affecting the monitoring effect, and also helping to extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a front view of a nitrate nitrogen and ammonia nitrogen cluster monitoring device in an embodiment of the present invention.

[0055] Figure 2 It is an exploded diagram of a nitrate nitrogen and ammonia nitrogen cluster monitoring device in an embodiment of the present invention.

[0056] Figure 3It is a cross-sectional view of a device body in an embodiment of the present invention.

[0057] Figure 4 The figure is an exploded view of a protective component in an embodiment of the present invention.

[0058] Figure 5 It is a cross-sectional view of a protective bottom cover in an embodiment of the present invention.

[0059] Figure 6 It is a stereoscopic diagram of an ammonia nitrogen probe in an embodiment of the present invention.

[0060] Figure 7 The figure is an exploded view of an ammonia nitrogen probe in an embodiment of the present invention.

[0061] Figure 8 It is a cross-sectional view of a connection structure between a porous end cap and an ion selective membrane in an embodiment of the present invention.

[0062] Fig. 9 The figure is an exploded view of a nitric nitrogen probe in an embodiment of the present invention.

[0063] Fig.10 It is a schematic structural diagram of an optical detection component in an embodiment of the present invention.

[0064] Fig.11 For the present invention Fig.10 Schematic diagram of the structure of the fixed column in the optical detection component.

[0065] Explanation of the symbols in the schematic diagram:

[0066] 100. Device body; 110. Circuit board;

[0067] 200, ammonia nitrogen probe; 210, first electrode housing; 211, first microporous ceramic sand core; 212, first front end cap; 213, first electrode housing cylinder; 220, working electrode; 221, ion selective membrane; 222, porous end cap; 223, working electrode cylinder; 224, working electrode tail cap; 225, first electrode wire; 230, reference electrode; 231, second microporous ceramic sand core; 232, reference electrode cylinder; 233, reference electrode tail cap; 234, second electrode wire; 240, first probe tail cap;

[0068] 300, nitrate nitrogen probe; 311, second front end cap; 312, second electrode shell cylinder; 320, fixed column; 3211, first light transmission hole; 3212, second light transmission hole; 3221, first light guide quartz column; 3222, first light guide quartz column; 3231, first cavity; 3232, second cavity; 324, photodiode; 325, UVC-LED light source; 330, second probe tail cover;

[0069] 400, protective component; 410, protective cylinder; 411, filter component; 420, protective tail cover; 421, vibration component;

[0070] 500. Wire. DETAILED DESCRIPTION

[0071] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0072] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0073] Example

[0074] Combination Figure 1-Figure 4 A nitrate nitrogen and ammonia nitrogen cluster monitoring device of the present embodiment includes a device body 100, an ammonia nitrogen probe 200, a nitrate nitrogen probe 300 and a protective component 400. The device body 100 is connected to the protective component 400 to form a cavity. The ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 are respectively connected to the device body 100 and placed in the cavity; the ammonia nitrogen probe 200 includes a first electrode shell 210 and a working electrode 220 and a reference electrode 230 arranged in the first electrode shell 210, which are used to detect the concentration of ammonia nitrogen; the nitrate nitrogen probe 300 includes a second electrode shell and an optical detection component connected to the second electrode shell, which is used to detect the concentration of nitrate nitrogen; the protective component 400 includes a protective cylinder 410 and a protective tail cover 420 connected to the protective cylinder 410, and a filtering component 411 is arranged on the protective cylinder 410.

[0075] The ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 are placed in a cavity formed by connecting the device body 100 and the protective component 400. A filter component 411 is provided on the protective cylinder 410 of the protective component 400. The water body enters the cavity through the filter component 411. When the ammonia nitrogen and nitrate nitrogen therein are monitored, the influence of suspended particles in the water body on the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 can be shielded, thereby improving the monitoring effect of the cluster-type monitoring device.

[0076] As a specific embodiment, the device body 100 is fixedly connected to the protective component 400 by means of threads. The end face of the device body 100 is provided with two threaded holes, which are respectively connected to the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 by means of threads. As another optional embodiment, the ammonia nitrogen probe 200 also includes a first probe tail cover 240 disposed in the device body 100; the nitrate nitrogen probe 300 also includes a second probe tail cover 330 disposed in the device body 100; the inner edges of the first probe tail cover 240 and the second probe tail cover 330 are both provided with internal threads, which are respectively connected to the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 by means of threads. In addition, the protective cylinder 410 and the protective tail cover 420 can also be fixedly connected by means of threads.

[0077] As an optional implementation, the protective component 400 is a protective cover, the filter component 411 is a filter, and the protective cover can be composed of a filter. The mesh number of the filter is 100 to 400, which can effectively shield suspended particles from entering the cavity to prevent the monitoring from being affected, which is beneficial to improving the accuracy of the probe monitoring, etc.; it also reduces the attachment of suspended particles to the probe, which is beneficial to extending the service life of the device.

[0078] Combination Figure 5 On the other hand, a vibration component 421 is provided inside the protective tail cover 420 of the protective component 400. The vibration component 421 can generate vibration to clean the filter component 411, the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300, prevent microorganisms from forming biofilms on the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300, block the probes, and affect the monitoring effect, which is also conducive to extending the service life of the device. As a specific embodiment, the vibration component 421 can be an ultrasonic vibrator, and an ultrasonic vibrator is installed inside the protective tail cover 420 of the protective cover to generate vibration to clean the filter component 411, the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300 to achieve online cleaning.

[0079] Combination Figure 6 , Figure 7 , Figure 8 The first electrode housing 210 of the ammonia nitrogen probe 200 in this embodiment includes a first front end cap 212 and a first electrode housing cylinder 213. The first front end cap 212 is provided with a first microporous ceramic sand core 211, and the first electrode housing 210 is filled with a NaCl solution. The first microporous ceramic sand core 211 is inserted into the first front end cap 212.

[0080] The working electrode 220 includes an ion selective membrane 221, a porous end cap 222, a working electrode barrel 223 and a working electrode tail cap 224 connected in sequence. As an optional embodiment, an adhesive such as UV glue can be coated around the ion selective membrane 221 to bond the ion selective membrane 221 to the porous end cap 222. The porous end cap 222 is provided with a plurality of small holes, and the porous end cap 222 and the working electrode barrel 223 can be connected by a snap-fit ​​method. Figure 6 , Figure 7 is a schematic diagram of the structure of the porous end cap 222 without the ion selective membrane 221 bonded thereto. Figure 8 It is a structural schematic diagram of an ion selective membrane 221 bonded to a porous end cap 222. The working electrode 220 also includes a first electrode wire 225, which is inserted into the working electrode tail cap 224. The working electrode cylinder 223 of the working electrode 220 is filled with NH4Cl solution as an electrolyte. The reference electrode 230 includes a second microporous ceramic sand core 231, a reference electrode cylinder 232, and a reference electrode tail cap 233 connected in sequence. The reference electrode 230 also includes a second electrode wire 234, which is inserted into the reference electrode tail cap 233. The reference electrode cylinder 232 of the reference electrode 230 is filled with a saturated KCl solution. The reference electrode cylinder 232 is filled with saturated KCl as an inner salt bridge, and the cavity in the electrode shell is filled with NaCl liquid to form an outer salt bridge, forming an ammonium ion selective electrode with a double salt bridge reference electrode 230, that is, an ammonia nitrogen probe 200. As an optional embodiment, the working electrode tail cover 224 and the reference electrode tail cover 233 may be provided with wire holes for passing through the first electrode wire 225 and the second electrode wire 234, respectively. The first electrode wire 225 and the second electrode wire 234 are immersed in NH4Cl solution and saturated KCl solution, respectively. On the other hand, the first probe tail cover 240 may also be provided with wire holes for connecting the metal electrode wires in the working electrode 220 and the reference electrode 230 with the device body 100, so that the device body 100 can collect, convert, amplify, etc. the signal of the ammonia nitrogen probe 200. Due to the provision of the protective component 400 and the vibration component 421, microorganisms and suspended particles in the water body are effectively prevented from adhering to the ion selection membrane 221 to generate interference signals during detection, etc., thereby improving the detection accuracy of the ammonia nitrogen probe 200 and extending the service life.

[0081] As an optional embodiment, the reference electrode 230 is connected to one side of the working electrode 220, which can reduce the volume of the ammonia nitrogen probe 200. As a specific implementation, the reference electrode 230 can be bonded to the working electrode cylinder 223, and the second microporous ceramic sand core 231 is inserted into the reference electrode cylinder 232.

[0082] As a specific implementation, the first microporous ceramic sand core 211 and the second microporous ceramic sand core 231 are both microporous ceramic sand cores; the working electrode cylinder 223 and the reference electrode cylinder 232 can both be circular tubes; the first electrode wire 225 and the second electrode wire 234 are both Ag / AgCl electrode wires.

[0083] Combination Fig. 9 The second electrode housing of the nitric nitrogen probe 300 in this embodiment includes a second front end cap 311 and a second electrode housing barrel 312; the two ends of the optical detection component are respectively connected to the second front end cap 311 and the second electrode housing barrel 312. As a specific implementation, the two ends of the optical detection component are respectively fixedly connected to the second front end cap 311 and the second electrode housing barrel 312 by means of threads.

[0084] The optical detection component includes a fixed column 320 with a notch; the side walls on both sides of the notch are respectively provided with a coaxial first through hole and a second through hole, and the first through hole and the second through hole are connected along the axis direction of the fixed column 320; the first through hole is installed with a first light-guiding quartz column 3221 and a photodiode 324; the second through hole is installed with a second light-guiding quartz column 3222 and a UVC-LED light source 325. As a specific embodiment, the fixed column 320 with a notch can be a "concave" cylinder, the first through hole and the second through hole are both cylindrical in size, and the first light-guiding quartz column 3221 and the second light-guiding quartz column 3222 of the same size can be bonded in the first through hole and the second through hole respectively.

[0085] As an optional implementation, combined with Fig.10 , Fig.11The first through hole includes a coaxial first light-transmitting hole 3211 and a first cavity 3231, the diameter of the first light-transmitting hole 3211 is smaller than the diameter of the first cavity 3231; the first cavity 3231 is used to install the photodiode 324, and the first light-transmitting hole 3211 is used to install the first light-guiding quartz column 3221; the second through hole includes a coaxial second light-transmitting hole 3212 and a second cavity 3232, the diameter of the second light-transmitting hole 3212 is smaller than the diameter of the second cavity 3232; the second cavity 3232 is used to install the UVC-LED light source 325, and the second light-transmitting hole 3212 is used to install the second light-guiding quartz column 3222. Specifically, the first light-transmitting hole 3211 and the second light-transmitting hole 3212 are circular holes of the same size, and the first cavity 3231 and the second cavity 3232 are circular holes of the same size. The UVC-LED light source 325 is internally encapsulated with a light-emitting chip 1 that emits ultraviolet light with a wavelength of 230±5nm and a light-emitting chip 2 that emits ultraviolet light with a wavelength of 275±5nm, which can emit light with wavelengths of 230±5nm and 275±5nm respectively. The UVC-LED light source 325 and the photodiode 324 are both electrically connected to the device body 100, and the device body 100 can control the light-emitting chip in the UVC-LED light source 325 to emit light, and when using different light-emitting chips, the signal generated by light of the photodiode 324 is collected, converted, amplified, etc. Further, the UVC-LED light source 325 can be connected to the device body 100 through the two bases provided therein, and the light-emitting chips of two wavelengths can be independently controlled. Specifically, the UVC-LED light source 325 can adopt existing technologies in the art, without specific limitations. Since the protective component 400 and the vibration component 421 are provided, the suspended particles are shielded and the microorganisms are prevented from attaching to the probe to form a biofilm, the light intensity that the photodiode 324 can receive is more accurate, and the detection accuracy is higher.

[0086] Combination Figure 3 A circuit main board 110 is arranged in the device body 100, and the circuit main board 110 includes a single-chip microcomputer chip and its auxiliary circuits, a power management circuit, an RS485 communication circuit, two independent LED driving circuits, a photodiode signal operational amplifier circuit, an ion selective electrode signal operational amplifier circuit and a vibration component driving circuit.

[0087] Among them, two independent LED driving circuits are used to control two light-emitting chips of different wavelengths in the UVC-LED light source 325; the photodiode signal amplifier circuit converts the weak photocurrent signal generated by the photodiode 324 into a measurable voltage signal, and performs amplification processing, etc.; the ion selective electrode signal amplifier circuit converts the weak signal generated by the ammonium ion selective electrode into a measurable voltage signal, and performs amplification processing, etc.; the vibration component driving circuit is used to control the vibration time and frequency of the vibration component 421, for example, the vibration component 421 can be controlled to vibrate regularly to regularly clean the filter component 411, the ammonia nitrogen probe 200 and the nitrate nitrogen probe 300. Specifically, the ion selective electrode signal amplifier circuit, the vibration component driving circuit, and the photodiode signal amplifier circuit can adopt existing technologies in the field without specific limitations.

[0088] As a specific implementation, the first electrode wire 225 in the working electrode 220 and the second electrode wire 234 in the reference electrode 230 are connected to the circuit main board 110. For example, the connection can be made by welding. The UVC-LED light source 325 and the photodiode 324 are connected to the circuit main board 110 through a wire 500. Among them, the UVC-LED light source 325 has two pairs of pins at the bottom, which can be connected to two independent LED drive circuits in the circuit main board 110 through the wire 500, and the light-emitting chips of two wavelengths can be independently controlled. The vibration component 421 can also be connected to the vibration component drive circuit by setting a wire.

[0089] The working principle of the nitrate nitrogen and ammonia nitrogen cluster monitoring device in this embodiment is as follows: the water body enters the cavity through the filter component 411, which can prevent suspended particles from entering the cavity, and prevent microorganisms from attaching to the probe to form a biofilm and affecting the monitoring through the vibration component 421. The ammonia nitrogen probe 200 is an ammonium ion selective electrode with a double salt bridge reference electrode, which detects ammonia nitrogen in the water body. The nitrate nitrogen probe 300 detects nitrate nitrogen in the water by ultraviolet spectrophotometry; specifically, it can detect and calculate the absorbance of the water body at 235nm and 275nm through the UVC-LED light source 325 and the photodiode 324, wherein the absorbance at 235nm is used to quantify the nitrate concentration, and the absorbance at 275nm has the effect of subtracting the interference of organic matter on the absorbance of nitrate at 235nm. Absorbance A=A 235 -α×A 275 , the coefficient α is the A of the organic matter 235 / A 275 Moreover, the weak signal generated by the ammonia nitrogen probe 200 and the weak photocurrent signal generated by the photodiode 324 are collected, converted, amplified, etc. by the circuit main board 110 in the device body 100 to obtain the detection results of ammonia nitrogen and nitrate nitrogen.

[0090] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A cluster monitoring device for nitrate nitrogen and ammonia nitrogen, characterized in that: The device comprises a device body (100), an ammonia nitrogen probe (200), a nitrate nitrogen probe (300) and a protective component (400). The device body (100) is connected to the protective component (400) to form a cavity. The ammonia nitrogen probe (200) and the nitrate nitrogen probe (300) are respectively connected to the device body (100) and placed in the cavity; The ammonia nitrogen probe (200) comprises a first electrode housing (210) and a working electrode (220) and a reference electrode (230) arranged in the first electrode housing (210), and is used to detect the ammonia nitrogen concentration; The nitrate nitrogen probe (300) comprises a second electrode shell and an optical detection component connected to the second electrode shell, and is used to detect the nitrate nitrogen concentration; The protective component (400) comprises a protective cylinder (410) and a protective tail cover (420) connected to the protective cylinder (410), and a filtering component (411) is arranged on the protective cylinder (410).

2. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 1, characterized in that: A vibration component (421) is arranged inside the protective tail cover (420), and the vibration component (421) is used to generate vibration.

3. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to any one of claims 1 to 2, characterized in that: The filtering component (411) comprises a filter screen, and the mesh number of the filter screen is 100 to 400 meshes.

4. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 3 is characterized in that: The optical detection component comprises a fixed column (320) with a notch; The side walls on both sides of the notch are respectively provided with a coaxial first through hole and a second through hole. A first light-guiding quartz column (3221) and a photodiode (324) are installed in the first through hole; A second light-guiding quartz column (3222) and a UVC-LED light source (325) are installed in the second through hole.

5. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 4 is characterized in that: The first through hole comprises a coaxial first light-transmitting hole (3211) and a first cavity (3231), The diameter of the first light-transmitting hole (3211) is smaller than the diameter of the first cavity (3231). The first cavity (3231) is used to install the photodiode (324), and the first light-transmitting hole (3211) is used to install the first light-guiding quartz column (3221); The second through hole includes a coaxial second light-transmitting hole (3212) and a second cavity (3232). The diameter of the second light-transmitting hole (3212) is smaller than the diameter of the second cavity (3232). The second cavity (3232) is used to install the UVC-LED light source (325), and the second light-transmitting hole (3212) is used to install the second light-guiding quartz column (3222).

6. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 5, characterized in that: The UVC-LED light source internally encapsulates a light-emitting chip 1 that emits ultraviolet light with a wavelength of 230±5nm and a light-emitting chip 2 that emits ultraviolet light with a wavelength of 275±5nm.

7. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 6, characterized in that: The second electrode shell comprises a second front end cap (311) and a second electrode shell cylinder (312); The two ends of the optical detection component are respectively connected to the second front end cap (311) and the second electrode shell cylinder (312).

8. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 3 is characterized in that: The first electrode shell (210) comprises a first front end cap (212) and a first electrode shell cylinder (213); the first front end cap (212) is provided with a first microporous ceramic sand core (211); The working electrode (220) comprises an ion selective membrane (221), a porous end cap (222), a working electrode cylinder (223) and a working electrode tail cap (224) which are connected in sequence; The reference electrode (230) comprises a second microporous ceramic sand core (231), a reference electrode barrel (232), and a reference electrode tail cover (233) which are connected in sequence; The working electrode (220) is filled with NH4Cl solution as an electrolyte; The reference electrode (230) is filled with a saturated KCl solution; The first electrode housing (210) is filled with a NaCl solution.

9. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to claim 8, characterized in that: The working electrode (220) further comprises a first electrode wire (225), wherein the first electrode wire (225) is passed through the working electrode tail cover (224); The reference electrode (230) further comprises a second electrode wire (234), wherein the second electrode wire (234) is passed through the reference electrode tail cover (233); The first electrode wire (225) and the second electrode wire (234) are both connected to the device body (100).

10. The nitrate nitrogen and ammonia nitrogen cluster monitoring device according to any one of claims 4 to 9, characterized in that: The device body (100) comprises a circuit main board (110); The first electrode wire (225) and the second electrode wire (234) are connected to the circuit main board (110); The UVC-LED light source (325) and the photodiode (324) are connected to the circuit main board (110) via a wire (500).

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