Mariculture circulating water electrolysis and photoelectrocatalysis degerming and denitrifying system
By introducing seawater electrolytic oxidation and nanotitanium nickel catalytic oxidation technology into the seawater aquaculture circulation water treatment system, combined with residual chlorine monitoring and central control system, the problems of slow and poor treatment of seawater aquaculture wastewater in the existing technology have been solved, and the effects of efficient sterilization and nitrogen pollution have been achieved.
Patent Information
- Application Number
- CN202421341855.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The existing marine aquaculture wastewater treatment technology has a slow treatment speed and weak treatment effect. The treated wastewater still contains harmful substances such as nitrogen, nitrate and chlorine.
The seawater aquaculture circulating water electrolysis and photoelectro-catalytic sterilization and nitrogen removal system is adopted, and the seawater electrolytic oxidation module releases effective chlorine and reactive oxygen species, the nano-titanium nickel catalytic oxidation module removes chlorine halogenated compounds and residual effective chlorine, and the residual chlorine monitoring module and the central control system regulate the output power to ensure the safety of the residual chlorine value.
It significantly improves the killing rate of pathogenic pathogenic microorganisms and ammonia nitrogen removal rate in seawater, removes chlorohalogenated compounds and residual effective chlorine, prevents killing of marine aquaculture objects, and effectively degrades nitrogen pollutants in the circulating water of aquaculture.
Smart Images
Figure CN222821393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seawater aquaculture circulating water treatment, in particular to a seawater aquaculture circulating water electrolysis and photoelectric catalytic sterilization and nitrogen removal system. Background Art
[0002] Marine aquaculture wastewater treatment refers to the treatment of wastewater generated during marine aquaculture to reduce the impact on the marine environment and protect water quality. Wastewater may contain organic matter, ammonia nitrogen, nitrates, phosphates and other substances in the aquaculture process. If it is directly discharged into the ocean, it may have adverse effects on aquatic organisms and the ecological environment. In the existing technology, commonly used marine aquaculture wastewater treatment methods include biological filtration, seaweed absorption, plant filter and artificial wetlands.
[0003] However, during the use of the above-mentioned treatment structure, the treatment speed for harmful substances in marine aquaculture wastewater is relatively slow and the treatment effect is weak. The treated wastewater will also contain nitrogen, nitrate and chlorine, etc. For this reason, we propose a marine aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system. Utility Model Content
[0004] Therefore, the purpose of the utility model is to provide a seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system, which preliminarily filters and treats the seawater aquaculture wastewater through a sand filter, releases effective chlorine components and active oxygen components through a seawater electrolytic oxidation module, which have a synergistic effect in killing pathogenic pathogenic microorganisms in seawater and degrading nitrogen pollutants in aquaculture circulating water, removes chlorine halogenated compounds formed during the electrolytic treatment of the previous seawater electrolytic oxidation module through a nano-titanium nickel catalytic oxidation module, removes the remaining effective chlorine during the electrolytic treatment of the electrolytic oxidation module, prevents the flow of chlorine into the aquaculture pond and causes the death of marine aquaculture objects, removes some nitrogen pollutants that cannot be removed by the previous seawater electrolytic oxidation module, and adjusts the output power of the electrolytic oxidation module and the nano-titanium photocatalytic module through the cooperation of the residual chlorine monitoring module and the central control system module to ensure that the upper limit of the output residual chlorine value does not kill the circulating water aquaculture objects.
[0005] In order to solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solution: a seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system, comprising:
[0006] A sand filter, wherein the sand filter is used to filter aquaculture wastewater;
[0007] A seawater electrolytic oxidation module, which is used to electrolytically oxidize seawater to generate effective chlorine components of HClO and CLO- and release active oxygen components;
[0008] Nano-titanium-nickel catalytic oxidation module removes chlorine-halogenated compounds formed during the electrolytic treatment of the seawater electrolytic oxidation module before treatment;
[0009] Residual chlorine monitoring module, used to monitor the residual chlorine value in the pipeline in real time;
[0010] The central control system module is used to adjust the output power of the electrolytic oxidation module and the photocatalytic module.
[0011] As a preferred solution of the marine aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the sand filter comprises a base, a tank body, a bottom sewage pipe, a top pipe, quartz sand and a valve;
[0012] Among them, seawater sewage enters through the top pipe.
[0013] As a preferred solution of a seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the seawater electrolysis and oxidation module includes an electrolysis chamber, an MMO electrolysis module arranged in the electrolysis chamber, a first flange cover connected to one end of the electrolysis chamber, a first flange fixing screw passing through the first flange cover, a first flange gasket attached to the inner side of the first flange cover, and a second flange cover connected to the first flange cover.
[0014] As a preferred solution of the seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the seawater electrolysis and oxidation module also includes a third flange cover, a second flange fixing screw, a second flange gasket and a fourth flange cover arranged at the other end of the electrolysis chamber.
[0015] As a preferred scheme of the seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the nano-titanium nickel catalytic oxidation module includes a catalytic module cavity, a catalytic module water inlet opened on the surface of the catalytic module cavity, a supersonic wave oscillator interface arranged on the surface of the catalytic module cavity, a catalytic module water outlet opened on the surface of the catalytic module cavity, an electroplated foam honeycomb titanium dioxide inserted into the catalytic module cavity, and a deep ultraviolet lamp arranged in the catalytic module cavity.
[0016] As a preferred solution of the seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the nano-titanium-nickel catalytic oxidation module also includes a catalytic module flange, a catalytic module flange gasket, a catalytic module flange cover, a catalytic module flange fixing screws and an ultrasonic oscillator arranged at one end of the catalytic module cavity.
[0017] As a preferred solution of the seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the other end of the catalytic module cavity is provided with a catalytic module flange, a catalytic module flange gasket, a catalytic module flange cover, and a catalytic module flange fixing screws of the same structure.
[0018] As a preferred solution of the seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system described in the utility model, the residual chlorine monitoring module includes a sampling flow channel, a residual chlorine detection sensor, and an automatic residual chlorine monitoring instrument.
[0019] Compared with the prior art, the advantages of the utility model are:
[0020] The sand filter is used to preliminarily filter and treat the marine aquaculture wastewater. The seawater electrolytic oxidation module releases effective chlorine components and active oxygen components. These two effective components with strong oxidizing ability have a synergistic effect in killing pathogenic microorganisms in seawater and degrading nitrogen pollutants in aquaculture circulating water. The nano-titanium-nickel catalytic oxidation module is used to remove the chlorine halogenated compounds formed during the electrolytic treatment of the previous seawater electrolytic oxidation module, and the remaining effective chlorine during the electrolytic treatment of the electrolytic oxidation module is removed to prevent the flow of chlorine into the aquaculture pond and cause the death of marine aquaculture objects. Some nitrogen pollutants that cannot be removed by the previous seawater electrolytic oxidation module are removed. Through the mutual cooperation of the residual chlorine monitoring module and the central control system module, the output power of the electrolytic oxidation module and the nano-titanium photocatalytic module is adjusted to ensure that the upper limit of the output residual chlorine value does not kill the circulating water aquaculture objects.
[0021] When in use, the aquaculture circulating sewage enters the tank from the inlet pipe on the top of the sand filter, is filtered through quartz sand, and the filtered aquaculture circulating water flows out from the outlet on the top and enters the seawater electrolytic oxidation module; during backwashing: the bottom drain valve is automatically opened, and the dirt and floating particles filtered in the quartz sand are discharged from the bottom drain port by using the water inlet pressure. When the water flows into the seawater electrolytic oxidation module, the anode of the mmo electrolytic module generates effective chlorine components in the form of HClO and CLO-, and releases active oxygen components at the electrolytic cathode. These two effective components with strong oxidizing ability have a synergistic effect in killing pathogenic microorganisms in seawater and degrading nitrogen pollutants in aquaculture circulating water. The killing rate of pathogenic microorganisms is large and the removal rate of ammonia nitrogen is greatly improved. The seawater treated by the seawater electrolytic oxidation module flows into the nano-titanium nickel catalytic oxidation module, and the surface of the electroplated foam honeycomb titanium dioxide has a foam shape. The surface of the electroplated foam honeycomb titanium dioxide is electroplated with micro-water holes in the shape of a state and a honeycomb. When the deep ultraviolet lamp irradiates the surface of the electroplated foam honeycomb titanium dioxide, photogenerated electrons (e-) are formed. The position of the electrons in the valence band forms a positively charged hole (h+). The photogenerated electrons (e-) are easily captured by the dissolved oxygen or oxides in the contact liquid to form superoxide free radicals with strong oxidizing ability. The oxidizing ability of free radicals is the strongest oxidant in the water body. It can oxidize most of the inorganic and inorganic pollutants in the water body and mineralize them into inorganic small molecules, carbon dioxide, water and other harmless substances. The residual chlorine value in the pipeline is monitored in real time through the sampling flow slot, residual chlorine detection sensor, and residual chlorine automatic monitoring instrument. The output power of the seawater electrolytic oxidation module and the nano-titanium nickel catalytic oxidation module is automatically adjusted through the central control system module to ensure that the upper limit of the output residual chlorine value does not kill the circulating aquaculture objects. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0023] Figure 1 It is the flow chart of the utility model;
[0024] Figure 2 This is a structural diagram of the seawater electrolytic oxidation module of the utility model;
[0025] Figure 3 This is a structural diagram of the nano-titanium-nickel catalytic oxidation module of the utility model.
[0026] In the figure: 1. Sand filter; 2. Seawater electrolysis oxidation module; 21. Electrolysis cavity; 22. MMO electrolysis module; 23. First flange cover; 24. First flange fixing screws; 25. First flange gasket; 26. Second flange cover; 27. Third flange cover; 28. Second flange fixing screws; 29. Second flange gasket; 210. Fourth flange cover; 3. Nano-titanium nickel catalytic oxidation module; 31. Catalytic module cavity; 32. Catalytic module water inlet; 33. Ultrasonic wave oscillator interface; 34. Catalytic module water outlet; 35. Electroplated foam honeycomb titanium dioxide; 36. Deep ultraviolet lamp; 37. Catalytic module flange; 38. Catalytic module flange gasket; 39. Catalytic module flange cover; 310. Catalytic module flange fixing screws; 311. Ultrasonic oscillator; 4. Residual chlorine monitoring module; 5. Central control system module. DETAILED DESCRIPTION
[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.
[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.
[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.
[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.
[0031] The utility model provides a seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system. The seawater aquaculture wastewater is preliminarily filtered and treated by a sand filter. The effective chlorine component and the active oxygen component are released by a seawater electrolytic oxidation module. These two effective components with strong oxidation ability have a synergistic effect in killing pathogenic microorganisms in seawater and degrading nitrogen pollutants in aquaculture circulating water. The chlorine halogenated compounds formed in the electrolytic treatment process of the front-stage seawater electrolytic oxidation module are removed and treated by a nano-titanium nickel catalytic oxidation module. The remaining effective chlorine in the electrolytic treatment process of the electrolytic oxidation module is removed to prevent the death of marine aquaculture objects caused by flowing into the aquaculture pond, and the nitrogen pollutants that cannot be removed by the front-stage seawater electrolytic oxidation module are removed. The output power of the electrolytic oxidation module and the nano-titanium photocatalytic module is adjusted through the mutual cooperation of the residual chlorine monitoring module and the central control system module to ensure that the upper limit of the output residual chlorine value does not cause killing to the circulating water aquaculture objects.
[0032] Figure 1 , Figure 2 , Figure 3 and shows the overall structure of a system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal in aquaculture of seawater according to an embodiment of the present invention. Figure 1 , Figure 2 , Figure 3 , the main structure of this embodiment includes: a sand filter 1, a seawater electrolytic oxidation module 2, a nano-titanium nickel catalytic oxidation module 3, a residual chlorine monitoring module 4 and a central control system module 5;
[0033] The sand filter 1 is used for filtering aquaculture wastewater;
[0034] Specifically, the sand filter 1 includes a base, a tank body, a bottom sewage pipe, a top pipe, quartz sand and a valve;
[0035] Among them, seawater sewage enters through the top pipe;
[0036] In specific use, the aquaculture circulating sewage enters the tank from the inlet pipe at the top of the sand filter 1, is filtered by quartz sand, and the filtered aquaculture circulating water flows out from the outlet at the top and enters the seawater electrolytic oxidation module 2; during backwashing: the bottom drain valve is automatically opened, and the dirt and floating particles filtered in the quartz sand are discharged from the bottom drain outlet by using the water inlet pressure;
[0037] The seawater electrolysis and oxidation module 2 is used for electrolyzing and oxidizing seawater to generate effective chlorine components of HClO and CLO- and release active oxygen components. Specifically, the seawater electrolysis and oxidation module 2 includes an electrolysis chamber 21, an MMO electrolysis module 22 arranged in the electrolysis chamber 21, a first flange cover 23 connected to one end of the electrolysis chamber 21, a first flange fixing screw 24 passing through the first flange cover 23, a first flange gasket 25 attached to the inner side of the first flange cover 23, and a second flange cover 26 connected to the first flange cover 23. The seawater electrolysis and oxidation module 2 also includes a third flange cover 27, a second flange fixing screw 28, a second flange gasket 29 and a fourth flange cover 210 arranged at the other end of the electrolysis chamber 21;
[0038] In specific use; when the water flows into the seawater electrolytic oxidation module 2, the anode of the mmo electrolytic module 22 generates effective chlorine components of HClO and CLO-, and releases active oxygen components at the electrolytic cathode. These two effective components with strong oxidizing ability have a synergistic effect in killing pathogenic microorganisms in seawater and degrading nitrogen pollutants in aquaculture circulating water, among which the killing rate of pathogenic microorganisms is large and the removal rate of ammonia nitrogen is greatly improved;
[0039] The nano-titanium nickel catalytic oxidation module 3 removes the chlorinated halogenated compounds formed in the electrolytic treatment process of the front-stage seawater electrolytic oxidation module. Specifically, the nano-titanium nickel catalytic oxidation module 3 includes a catalytic module cavity 31, a catalytic module water inlet 32 provided on the surface of the catalytic module cavity 31, a supersonic wave oscillator interface 33 provided on the surface of the catalytic module cavity 31, a catalytic module water outlet 34 provided on the surface of the catalytic module cavity 31, an electroplated foam honeycomb titanium dioxide 35 inserted into the catalytic module cavity 31, and a deep ultraviolet lamp 36 provided in the catalytic module cavity 31;
[0040] The nano-titanium nickel catalytic oxidation module 3 also includes a catalytic module flange 37, a catalytic module flange gasket 38, a catalytic module flange cover 39, a catalytic module flange fixing screw 310 and an ultrasonic oscillator 311 arranged at one end of the catalytic module cavity 31;
[0041] The other end of the catalytic module cavity 31 is provided with a catalytic module flange 37, a catalytic module flange gasket 38, a catalytic module flange cover 39, and a catalytic module flange fixing screw 310 of the same structure;
[0042] Through flange connection, gaskets prevent water leakage and are locked by set screws;
[0043] In specific use, the seawater treated by the seawater electrolytic oxidation module 2 flows into the nano-titanium nickel catalytic oxidation module 3, and the surface of the electroplated foam honeycomb titanium dioxide 35 has a foam shape and honeycomb-shaped micro water holes. When the deep ultraviolet lamp 36 irradiates the surface of the electroplated foam honeycomb titanium dioxide 35, photogenerated electrons e- are formed, and the positions of the electrons moved away in the valence band form positively charged holes h+. The photogenerated electrons e- are easily captured by the dissolved oxygen or oxides in the contact liquid to form superoxide free radicals with strong oxidizing ability. The oxidizing ability of free radicals is the strongest oxidant in the water body, which can oxidize most of the inorganic and inorganic pollutants in the water body and mineralize them into inorganic small molecules, carbon dioxide, water and other harmless substances;
[0044] The residual chlorine monitoring module 4 is used to monitor the residual chlorine value in the pipeline in real time. Specifically, the residual chlorine monitoring module 4 includes a sampling flow slot, a residual chlorine detection sensor, and a residual chlorine automatic monitoring instrument;
[0045] During specific use, the residual chlorine value in the pipeline is monitored in real time through the sampling flow slot, the residual chlorine detection sensor, and the residual chlorine automatic monitoring instrument, and the output power of the seawater electrolytic oxidation module 2 and the nano-titanium nickel catalytic oxidation module 3 is automatically adjusted through the central control system module 5 to ensure that the upper limit of the output residual chlorine value does not cause killing to the circulating aquaculture objects;
[0046] The central control system module 5 is used to adjust the output power of the electrolytic oxidation module and the photocatalytic module.
[0047] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal of circulating water for seawater aquaculture, characterized in that: include: A sand filter (1), wherein the sand filter (1) is used for filtering aquaculture wastewater; A seawater electrolytic oxidation module (2), wherein the seawater electrolytic oxidation module (2) is used to electrolytically oxidize seawater to generate effective chlorine components of HClO and CLO- and release active oxygen components; The nano-titanium nickel catalytic oxidation module (3) removes the chlorine-halogenated compounds formed during the electrolytic treatment of the seawater electrolytic oxidation module in the front stage; A residual chlorine monitoring module (4) is used to monitor the residual chlorine value in the pipeline in real time; The central control system module (5) is used to adjust the output power of the electrolytic oxidation module and the photocatalytic module.
2. A seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system according to claim 1, characterized in that: The sand filter (1) comprises a base, a tank body, a bottom sewage pipe, a top pipe, quartz sand and a valve; Among them, seawater sewage enters through the top pipe.
3. A seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system according to claim 2, characterized in that: The seawater electrolytic oxidation module (2) comprises an electrolysis chamber (21), an MMO electrolysis module (22) arranged in the electrolysis chamber (21), a first flange cover (23) connected to one end of the electrolysis chamber (21), a first flange fixing screw (24) passing through the first flange cover (23), a first flange gasket (25) attached to the inner side of the first flange cover (23), and a second flange cover (26) connected to the first flange cover (23).
4. A seawater aquaculture circulating water electrolysis and photoelectrocatalytic sterilization and nitrogen removal system according to claim 3, characterized in that: The seawater electrolytic oxidation module (2) further comprises a third flange cover (27), a second flange fixing screw (28), a second flange gasket (29) and a fourth flange cover (210) arranged at the other end of the electrolysis chamber (21).
5. The system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal of seawater aquaculture according to claim 4, characterized in that: The nano-titanium-nickel catalytic oxidation module (3) comprises a catalytic module cavity (31), a catalytic module water inlet (32) provided on the surface of the catalytic module cavity (31), a supersonic wave oscillator interface (33) provided on the surface of the catalytic module cavity (31), a catalytic module water outlet (34) provided on the surface of the catalytic module cavity (31), an electroplated foam honeycomb titanium dioxide (35) inserted into the catalytic module cavity (31), and a deep ultraviolet lamp (36) provided in the catalytic module cavity (31).
6. The system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal for circulating water in seawater aquaculture according to claim 5, characterized in that: The nano-titanium nickel catalytic oxidation module (3) also includes a catalytic module flange (37) arranged at one end of the catalytic module cavity (31), a catalytic module flange gasket (38), a catalytic module flange cover (39), a catalytic module flange fixing screw (310) and an ultrasonic oscillator (311).
7. The system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal for circulating water in seawater aquaculture according to claim 6, characterized in that: The other end of the catalytic module cavity (31) is provided with a catalytic module flange (37), a catalytic module flange gasket (38), a catalytic module flange cover (39), and a catalytic module flange fixing screw (310) of the same structure.
8. The system for electrolysis and photoelectrocatalytic sterilization and nitrogen removal for circulating water in seawater aquaculture according to claim 7, characterized in that: The residual chlorine monitoring module (4) comprises a sampling flow channel, a residual chlorine detection sensor, and a residual chlorine automatic monitoring instrument.