Aquaculture wastewater treatment device
By combining filter cloth filter, micro-nano bubble ozone catalytic oxidation system and filter media filter, the problems of low efficiency and high cost of aquaculture wastewater treatment are solved. It achieves efficient removal of ammonia nitrogen and nitrite nitrogen, and the effluent can be directly reused, reducing water waste and environmental pollution risks.
Patent Information
- Application Number
- CN202422764129.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Traditional aquaculture wastewater treatment methods are inefficient, costly, and complex to operate. Biological methods are slow and highly susceptible to environmental factors, leading to water waste and high risks of environmental pollution.
The system employs a combination of multi-stage series filter cloth filter, micro-nano bubble ozone catalytic oxidation system, and filter media filter. It removes large particulate impurities by filtering out large particles, uses micro-nano bubble ozone catalytic oxidation technology to remove ammonia nitrogen and nitrite nitrogen, and finally performs deep treatment.
It achieves efficient removal of ammonia nitrogen and nitrite nitrogen, and the treated water can be directly reused, reducing costs, saving water resources, and is simple to operate and highly safe.
Smart Images
Figure CN223804952U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of aquaculture tail water treatment technology, especially to an aquaculture wastewater treatment device. BACKGROUND
[0002] The factory aquaculture mode produces a large amount of tail water while improving the aquaculture yield. The excrement and decomposed feed of fish and other aquatic animals can produce a large amount of ammonia nitrogen and nitrite nitrogen, which can potentially harm the environment and subsequent breeding process. The traditional treatment method has the problems of low treatment efficiency, high cost, and complex operation. For example, the biological method has the characteristics of environmental protection, but the reaction speed is relatively slow, a long residence time is required, and it is greatly affected by environmental factors.
[0003] In addition, the water consumption of aquaculture is large, and the water is frequently changed, which increases the difficulty of treating the aquaculture tail water. Improper treatment can easily cause waste of water resources or cause a large amount of water pollution when discharged. Therefore, under the background of the rapid development of the factory aquaculture mode, it is of great significance to provide a wastewater treatment device to improve the treatment efficiency and recycling rate of the aquaculture tail water. SUMMARY
[0004] The utility model aims at at least solving one of the above-mentioned technical problems in the prior art. To this end, the purpose of the utility model is to provide an aquaculture wastewater treatment device. The aquaculture wastewater treatment device is used for treating the factory aquaculture tail water, can efficiently remove the ammonia nitrogen and nitrite nitrogen produced in the breeding process, and the treated effluent can be directly reused as the breeding water body, realizing the water body purification and cyclic regeneration of the factory aquaculture tail water.
[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:
[0006] The utility model provides an aquaculture wastewater treatment device, which comprises a filter cloth filter, a micro-nano bubble ozone catalytic oxidation system and a filter material filter connected in sequence along the water flow direction.
[0007] Preferably, the filter cloth filter inlet is connected with the outlet of the breeding pond, and the filter material filter outlet is connected with the inlet of the breeding pond.
[0008] Preferably, the filter cloth filter comprises 5-8 filter cloth units connected in series.
[0009] Preferably, the filter cloth filter is provided with a filter residue discharge pipe in the center.
[0010] Preferably, the filter precision of the filter cloth filter is 100 μm-10 mm.
[0011] Preferably, the micro-nano bubble ozone catalytic oxidation system comprises, in sequence, an oxygen cylinder, an ozone generator and an ozone catalytic oxidation reactor.
[0012] Preferably, a lifting pump is arranged between the filter cloth filter and the ozone catalytic oxidation reactor.
[0013] Preferably, a micro-nano bubble disperser is arranged at the bottom of the ozone catalytic oxidation reactor; the micro-nano bubble disperser is connected with the ozone generator.
[0014] Preferably, the length-diameter ratio of the ozone catalytic oxidation reactor is (6-9):1.
[0015] Preferably, the ozone catalytic oxidation reactor comprises, in sequence from top to bottom, a water outlet, a first supporting layer, a second supporting layer, a third supporting layer, a water inlet and a micro-nano bubble disperser.
[0016] Preferably, the first supporting layer, the second supporting layer and the third supporting layer are equidistantly distributed.
[0017] Preferably, the first supporting layer, the second supporting layer and the third supporting layer respectively have a pore structure; the diameter of the pore is selected from 5-40 μm.
[0018] Preferably, a catalyst is respectively placed on the first supporting layer, the second supporting layer and the third supporting layer; the accumulation thickness of the catalyst is selected from 10-50 mm; further preferably, the accumulation thickness of the catalyst is selected from 10-20 mm.
[0019] Preferably, the particle size of the catalyst is 1-10 mm; further preferably, the particle size of the catalyst is 1-5 mm.
[0020] Preferably, the catalyst is selected from at least one of magnesium-based biochar and manganese-based biochar.
[0021] Preferably, in the filter material filter, the filling amount of the filter material is 60-75% of the volume of the filter.
[0022] Preferably, the filter material filter comprises, in sequence from top to bottom, a water inlet, a filter plate and a water outlet; the filter material is accumulated on the filter plate.
[0023] Preferably, the particle size of the filter material is 8-40 mm.
[0024] Preferably, the filter material is selected from at least one of active manganese and clinoptilolite; further preferably, the filter material is active manganese and clinoptilolite with a mass ratio of 1:(1-2).
[0025] The basic principle of the utility model is explained as follows:
[0026] 1) The utility model adopts the filter cloth filter of multistage series connection first, filters out suspended solid and large particle organic matter such as excrement, feed residue, realizes solid-liquid separation, and reduces the burden of subsequent processing unit;
[0027] 2) The filter cloth filter effluent enters the micro-nano bubble ozone catalytic oxidation system, the oxygen cylinder is connected with the ozone generator, the ozone gas generated by the ozone generator is connected with the micro-nano bubble disperser at the bottom of the upper ozone reactor through pipeline, the ozone gas is converted into a large amount of micro-nano ozone bubbles through the micro-nano bubble disperser, the micro-nano bubble disperser aerates from bottom to top, the micro-nano ozone bubbles are uniformly diffused from bottom to top, and the combination of micro-nano bubble technology and ozone catalytic oxidation technology promotes the dissolution of ozone and enhances the oxidation capacity; the water body enters the ozone catalytic oxidation reactor from the lower inlet and flows out from the upper outlet, the water flow and the micro-nano ozone bubbles flow in the same direction, and the air resistance phenomenon does not occur; the airflow can drive the catalyst on the supporting layer, so that the catalyst is in a flowing state, thereby promoting the contact between the water body and the catalyst, ozone catalytic oxidation is carried out, and most of ammonia nitrogen and nitrite nitrogen in the water body are removed under the action of the micro-nano ozone bubbles and the multilayer catalysts;
[0028] 3) The effluent of the micro-nano bubble ozone catalytic oxidation system enters the filter material filter, and deep treatment is realized through the action of the filter material.
[0029] The utility model has the advantages of:
[0030] 1) The water product aquaculture wastewater treatment device provided by the utility model removes large particle impurities through the filter cloth filter first, removes most of ammonia nitrogen and nitrite nitrogen through the micro-nano bubble ozone catalytic oxidation system, and finally carries out deep treatment through the filter material filter, the ozone catalytic oxidation reaction speed is fast, and the reaction products are mainly nitrogen, water and part of nitrate nitrogen, and no new pollutants are generated;
[0031] 2) The water product aquaculture wastewater treatment device provided by the utility model adopts the combination technology of micro-nano bubbles and ozone catalytic oxidation, and one filter is arranged before and after the micro-nano bubble ozone catalytic oxidation system, ammonia nitrogen and nitrite nitrogen can be effectively removed, the aquaculture tail water treatment efficiency is improved, the treatment cost is reduced, the treated effluent can be reused as aquaculture water body, and water resources are greatly saved;
[0032] 3) The water product aquaculture wastewater treatment device provided by the utility model is simple to operate, high in safety, high in practicability, and suitable for popularization and use. DRAWINGS
[0033] Figure 1 It is a schematic view of the water product aquaculture wastewater treatment device of the utility model;
[0034] Figure 2The utility model discloses an aquaculture wastewater treatment device schematic drawing, wherein, 1 - breeding pond water outlet, 2 - filter cloth filter inlet, 3 - filter residue discharge pipe, 4 - filter disc, 5 - outlet weir, 6 - filter cloth filter water outlet, 7 - ozone catalytic oxidation reactor water inlet, 8 - micro - nanometer bubble disperser, 91 - third supporting layer, 101 - third catalyst layer, 92 - second supporting layer, 102 - second catalyst layer, 93 - first supporting layer, 103 - first catalyst layer, 11 - ozone generator, 12 - ozone catalytic oxidation reactor water outlet, 13 - filter material filter inlet, 14 - filter material, 15 - filter material filter water outlet, 16 - filter plate.
[0035] Specific implementation type
[0036] The embodiment of the utility model is described in detail below, and the embodiment described by referring to the drawings is exemplary, is only used for explaining the utility model, and can not be understood as the limitation of the utility model.
[0037] The content of the utility model is further explained in detail by specific embodiment.
[0038] In the description of the utility model, it is explained that, unless another explicit provision and limitation, the term "linking", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electric connection, can be direct connection, can pass through intermediate medium indirectly connects, also can be two element internal intercommunication. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.
[0039] The raw material, reagent or device used in the embodiment can be obtained from conventional commercial channels, or can be obtained by prior art method, unless otherwise specified. Unless otherwise specified, the test or test method is the conventional method in the art.
[0040] Figure 1 The utility model discloses an aquaculture wastewater treatment device schematic drawing, wherein, Figure 1 It can be known that the aquaculture wastewater treatment device of the utility model comprises filter cloth filter, micro - nanometer bubble ozone catalytic oxidation system and filter material filter in proper order.
[0041] Figure 2 The utility model discloses an aquaculture wastewater treatment device schematic drawing, wherein, Figure 2It can be known that the water of the water product breeding wastewater treatment device of the embodiment is discharged from a water outlet 1 of a breeding pond, enters a filter cloth filter tank through a water inlet 2 of the filter cloth filter tank, five filter discs 4 in series are arranged in the filter cloth filter tank, a filter residue discharge pipe 3 is arranged at the center, filtered water is discharged from a filter cloth filter tank water outlet 6 through a water weir 5, and the filtered water enters an ozone catalytic oxidation reactor through an ozone catalytic oxidation reactor water inlet 7. The ozone catalytic oxidation reactor is connected with an ozone generator 11, and a micro-nano bubble disperser 8 is arranged at the bottom. From bottom to top, a third supporting layer 91, a third catalyst layer 101, a second supporting layer 92, a second catalyst layer 102, a first supporting layer 93, a first catalyst layer 103 and a water outlet 12 are sequentially arranged. The water outlet of the ozone catalytic oxidation reactor enters a filter material filter tank through a filter material filter tank water inlet 13, is filtered through filter material 14 on a filter plate 16, treatment is completed, and the water is discharged from a filter material filter tank water outlet 15.
[0042] In the specific embodiment of the utility model, the filter cloth unit in the filter cloth filter tank adopts high-strength synthetic fiber filter discs, the filtration precision is 100 μm-10 mm, the filtration efficiency is high, and the service life is long; the length-diameter ratio of the ozone catalytic oxidation reactor is 6:1, the three supporting layers in the ozone catalytic oxidation reactor are all sand core layers with an average pore size of 20 μm, the same catalyst, magnesium-based biochar, is filled on the three supporting layers, the particle size of the catalyst is 1 mm, and the stacking thickness is 15 mm; the filter material filled in the filter material filter tank is active manganese mixed clinoptilolite, the mixing ratio is 1:1 in mass ratio, the particle size of the filter material is 30-40 mm, and the filling amount of the filter material is 70% of the volume of the filter tank.
[0043] The following will be combined with Figure 2 The water product breeding wastewater treatment device of the utility model is described: Specific implementation
[0044] In this embodiment, the water product breeding wastewater treatment device is used to treat tail water of a factory fish pond in Guangdong Province. The content of ammonia nitrogen in the water body is 10 mg / L, and the content of nitrite nitrogen is 1.041 mg / L. The treatment steps are as follows:
[0045] S1, the breeding tail water enters the filter cloth filter tank, stays for 30 min, is filtered through the filter discs in series, removes feces and feed residues, realizes solid-liquid separation, the waste residue enters the filter residue discharge pipe, and the wastewater enters the ozone catalytic oxidation reactor;
[0046] S2, in the ozone catalytic oxidation reactor, the ozone concentration is 7.2 mg / L, the ozone gas generated by the ozone generator is formed into a large amount of micro-nano ozone bubbles by the micro-nano bubble disperser, and is aerated from bottom to top, the micro-nano ozone bubbles are uniformly diffused from bottom to top, the catalyst is driven to flow, the residence time of the wastewater in the ozone catalytic oxidation reactor is 30 min, under the action of the micro-nano ozone bubbles and the multi-layer catalyst, most of the ammonia nitrogen and nitrite nitrogen in the water body are removed, and the colority is reduced;
[0047] S3, the effluent of the ozone catalytic oxidation reactor enters the filter material filter tank, and the effluent is discharged after a residence time of 30 min.
[0048] Table 1 is the treatment effect of the factory water aquaculture tail water in the example, as shown in Table 1, after the water aquaculture wastewater treatment device provided by the application is treated, the removal rate of ammonia nitrogen in the tail water reaches 85.8%, the removal rate of nitrite nitrogen reaches 99.3%, the water treatment time is short, the efficiency is high, and the effluent water quality meets the requirements of the Guangdong Provincial Aquaculture Tail Water Discharge Standard (DB44 / 2462-2024), and can be directly reused as aquaculture water, saving water resources.
[0049] Table 1 is the treatment effect of the factory water aquaculture tail water in the example, as shown in Table 1, after the water aquaculture wastewater treatment device provided by the application is treated, the removal rate of ammonia nitrogen in the tail water reaches 85.8%, the removal rate of nitrite nitrogen reaches 99.3%, the water treatment time is short, the efficiency is high, and the effluent water quality meets the requirements of the Guangdong Provincial Aquaculture Tail Water Discharge Standard (DB44 / 2462-2024), and can be directly reused as aquaculture water, saving water resources.
[0050] Contaminants Influent Effluent Removal rate Ammonia nitrogen 10 mg / L 1.42 mg / L 85.8％ Nitrite nitrogen 1.041 mg / L 0.007 mg / L 99.3％
Claims
1. An apparatus for treating aquaculture wastewater, characterized by comprising: In the water flow direction, the aquaculture pond, the filter cloth filter, the micro-nano bubble ozone catalytic oxidation system and the filter material filter are sequentially connected; the filter cloth filter inlet is connected with the aquaculture pond outlet; the filter material filter outlet is connected with the aquaculture pond inlet; wherein the micro-nano bubble ozone catalytic oxidation system comprises an oxygen cylinder, an ozone generator and an ozone catalytic oxidation reactor which are sequentially connected; the ozone catalytic oxidation reactor comprises an outlet, a first supporting layer, a second supporting layer, a third supporting layer, an inlet and a micro-nano bubble disperser from top to bottom; the micro-nano bubble disperser is connected with the ozone generator; the first supporting layer, the second supporting layer and the third supporting layer have hole structures respectively; the diameters of the holes are selected from 5-40 μm respectively; the catalysts are placed on the first supporting layer, the second supporting layer and the third supporting layer respectively; the particle sizes of the catalysts are selected from 1-10 mm respectively; the stacking thicknesses of the catalysts are selected from 10-50 mm respectively.
2. The device for treatment of wastewater from aquaculture according to claim 1, characterized in that The filter cloth filter comprises 5-8 filter cloth units in series.
3. The device for treatment of wastewater from aquaculture according to claim 1, c h a r a c t e r i z e d i n that The length-diameter ratio of the ozone catalytic oxidation reactor is (6-9):
1.
4. The device for treatment of wastewater from aquaculture according to claim 1, characterized in that, The first supporting layer, the second supporting layer and the third supporting layer are equidistantly distributed.
5. The device for treatment of wastewater from aquaculture according to claim 1, c h a r a c t e r i z e d i n that In the filter material filter, the filling amount of the filter material is 60-75% of the filter volume.