Breeding wastewater treatment system with biogas slurry evaporation wind screen

Abstract

The utility model relates to the technical field of breeding wastewater treatment, and discloses a breeding wastewater treatment system with a biogas slurry evaporation wind screen, which comprises a breeding house, the breeding house is connected with the feces collecting pool through a pipeline, a discharge port of the feces collecting pool is sequentially connected with the microfiltration mechanism, the filter bed and the biogas digester through pipelines, and the biogas digester is provided with the desulfurization mechanism; microbial degradation and a physical enhanced water molecule evaporation technology are organically combined through a biochemical wind screen and a water circulation technology, zero emission of aquaculture wastewater is achieved, pollutants in the wastewater are degraded by microorganisms on the wind screen and a fermentation bed, water molecules enter the atmosphere through physical enhanced evaporation and gasification, the wind screen is exposed to the air in the operation process, and the water molecules enter the fermentation bed. The water flow flows from top to bottom, the oxygen mass transfer process in the air is enhanced, meanwhile, the fermentation bed negative pressure fractionation system keeps an air channel all the time under the action of the fan, a wind screen and the fermentation bed are maintained to become a continuous aerobic biochemical system, and nitrogen is pushed to be converted into nitrogen through aerobic denitrification.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture wastewater treatment, in particular to an aquaculture wastewater treatment system with a biogas slurry evaporation wind screen. Background Art

[0002] Aquaculture wastewater contains four highs, namely high COD, NH3-N, TP, and SS. Its load concentration is 50 to 100 times that of domestic sewage. It is an organic sewage that is extremely difficult to treat. When treating it, an aquaculture wastewater treatment system is needed.

[0003] In order to achieve good sewage treatment effects, the existing aquaculture wastewater treatment system must do the following: strictly implement solid-liquid separation, give priority to anaerobic treatment and aerobic denitrification treatment. Because aquaculture sewage contains a large amount of fecal solids, which further increases the difficulty of sewage treatment, sewage is usually pre-treated with solid-liquid separation. However, after pre-treatment, the concentration of pollutants in sewage is still relatively high, far from reaching the standard. After the anaerobic reaction, the sewage enters the oxidation pond stage because a large amount of organic matter turns into methane. The C / N ratio is seriously imbalanced and the SS is still high. The traditional nitrification and denitrification reaction is difficult to proceed normally, and carbon sources need to be supplemented. Supplementing exogenous carbon will increase the cost of sewage treatment. The use of endogenous carbon has strict process requirements (such as wall breaking or multi-point water inlet, etc.), which is very difficult to grasp, and cannot achieve the effect of zero discharge of aquaculture wastewater. It has certain limitations and is inconvenient to use. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the existing technology, the utility model provides an aquaculture wastewater treatment system with a sludge evaporation wind screen, which has zero discharge of aquaculture wastewater, realizes the advantages of circular agriculture and ecological agriculture, and solves the problems of incomplete sewage treatment and low resource utilization in the existing aquaculture wastewater treatment system.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a breeding wastewater treatment system with a biogas slurry evaporation wind screen, comprising a breeding house; the breeding house is connected to a manure collection tank through a pipeline, the manure collection tank discharge port is connected to a microfiltration mechanism, a filter bed and a biogas tank in sequence through pipelines, a desulfurization mechanism is provided on the biogas tank, a fuel collection tank is provided on the desulfurization mechanism, the filter bed is connected to a dry manure field and a fuel tank in sequence through a pipeline, the fuel collection tank is connected to the fuel tank for transmitting biogas, and the biogas tank is connected to an oxidation pond and a sludge drying mechanism in sequence through a pipeline;

[0008] A glycolysis wind screen system is arranged between the fuel tank and the oxidation pond; the glycolysis wind screen system comprises: a fermentation bed, the oxidation pond is connected to the fuel tank via the fermentation bed, and is used to fill the fuel tank, and the fermentation bed is connected to the negative pressure evaporator, the conversion tank and the biochemical wind screen in sequence.

[0009] In some embodiments, the breeding house is a pig house.

[0010] In some embodiments, the filter bed is an aerobic filter bed and the biogas digester is an anaerobic biogas digester.

[0011] In some embodiments, the microfiltration mechanism is a roller-type microfiltration machine.

[0012] In some embodiments, the desulfurization mechanism is a biogas desulfurizer.

[0013] In some embodiments, an aeration mechanism is provided on the oxidation pond.

[0014] In some embodiments, the sludge drying mechanism is a solid-liquid separator.

[0015] In some embodiments, the fermentation bed is an aerobic fermentation bed.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an aquaculture wastewater treatment system with a biogas slurry evaporation wind screen, which has the following beneficial effects:

[0018] The utility model organically combines microbial degradation with physical enhanced water molecule evaporation technology through biochemical wind screen and water circulation technology to achieve zero discharge of aquaculture wastewater. During the circulation process, pollutants in the wastewater are degraded by the microorganisms on the wind screen and the fermentation bed (organic matter is decomposed and assimilated, and the main pollutant nitrogen is converted into nitrogen by aerobic denitrifying bacteria and enters the atmosphere), and water molecules enter the atmosphere through physical enhanced evaporation and gasification, that is, natural evaporation with the huge surface area of ​​the wind screen and enhanced water molecule gasification by the negative pressure evaporation system of the fermentation bed. During operation, the wind screen is exposed to the air, and water flows from top to bottom to enhance the oxygen mass transfer process in the air. At the same time, the negative pressure fractionation system of the fermentation bed always maintains an air channel under the action of the fan, maintains the wind screen and the fermentation bed into a continuous aerobic biochemical system, promotes nitrogen to be converted into nitrogen by aerobic denitrification, has zero discharge of aquaculture wastewater, achieves the advantages of circular agriculture and ecological agriculture, and solves the problems of incomplete sewage treatment and low resource utilization rate in the existing aquaculture wastewater treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] In the figure:

[0021] 1. Breeding house; 2. Manure collection pool; 3. Microfiltration mechanism; 4. Filter bed; 5. Biogas pool; 6. Desulfurization mechanism; 7. Fuel collection tank; 8. Dry manure field; 9. Fuel tank; 10. Oxidation pond; 11. Sludge drying mechanism;

[0022] 12. Fermentation wind screen system; 121. Fermentation bed; 122. Biochemical wind screen; 123. Negative pressure evaporator; 124. Conversion tank. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0025] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] When treating aquaculture wastewater, the relevant technology sequentially performs solid-liquid separation, anaerobic treatment and aerobic denitrification treatment to achieve the treatment of aquaculture wastewater. However, since aquaculture wastewater contains a large amount of fecal solids, this further increases the difficulty of sewage treatment. Therefore, the sewage is usually pre-treated with solid-liquid separation. However, after pre-treatment, the concentration of pollutants in the sewage is still relatively high, far from reaching the standard. After the anaerobic reaction, the sewage enters the oxidation pond stage because a large amount of organic matter turns into methane. The C / N ratio is seriously imbalanced and the SS is still high. The traditional nitrification and denitrification reaction is difficult to proceed normally and needs to supplement carbon sources. Supplementing exogenous carbon will increase the cost of sewage treatment. The use of endogenous carbon has strict process requirements (such as wall breaking or multi-point water inlet, etc.), which is very difficult to grasp, and cannot achieve the effect of zero discharge of aquaculture wastewater. It has certain limitations and is inconvenient to use.

[0028] In order to solve the problems in the related technology to a certain extent, the embodiment of the present application provides an aquaculture wastewater treatment system with a sludge evaporation wind screen. When the aquaculture wastewater needs to be treated, collection, solid-liquid separation, oxidation deodorization, filtration, pumping, distribution enhanced oxygen mass transfer, diversion, extraction and filtration are carried out in sequence, which is more convenient and quick, and improves the convenience of the device.

[0029] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0030] Combination Figure 1 The embodiment of the present application provides a breeding wastewater treatment system with a biogas slurry evaporation wind screen, comprising a breeding house 1; the breeding house 1 is connected to a manure collection pool 2 through a pipeline, the discharge port of the manure collection pool 2 is connected to a microfiltration mechanism 3, a filter bed 4 and a biogas pool 5 in sequence through pipelines, the biogas pool 5 is provided with a desulfurization mechanism 6, the desulfurization mechanism 6 is provided with a fuel collection tank 7, the filter bed 4 is connected to a dry manure field 8 and a fuel tank 9 in sequence through a pipeline, the fuel collection tank 7 is connected to the fuel tank 9 for transmitting biogas, and the biogas pool 5 is connected to an oxidation pond 10 and a sludge drying mechanism 11 in sequence through a pipeline;

[0031] A fermentation wind screen system 12 is arranged between the fuel tank 9 and the oxidation pond 10; the fermentation wind screen system 12 includes: a fermentation bed 121, the oxidation pond 10 is connected to the fuel tank 9 through the fermentation bed 121, and is used to fill the fuel tank 9, and the fermentation bed 121 is connected to the negative pressure evaporator 123, the conversion tank 124 and the biochemical wind screen 122 in sequence.

[0032] The manure in the breeding house 1 is collected and enters the manure collection pool 2. The manure entering the manure collection pool 2 is separated by the microfiltration mechanism 3 and the filter bed 4 to form wastewater and dry manure. The dry manure is sent to the dry manure field 8 with a granulation workshop for resource utilization; the wastewater is anaerobically treated in the biogas tank 5 and then enters the oxidation pond 10 for treatment to eliminate odorous substances and fully convert organic nitrogen into inorganic nitrogen. The wastewater in the oxidation pond 10 is filtered through the fermentation bed 121 and the negative pressure evaporator 123 in the glycolysis wind screen system 12, and then enters the conversion pool 124 in the glycolysis wind screen system 12. The wastewater in the conversion pool 124 is pumped to the water distribution pipe on the top of each biochemical wind screen 122. The wastewater is evenly distributed on the top of the biochemical wind screen 122, and the water flows evenly from top to bottom, strengthening the oxygen mass transfer process in the air. It flows through the biochemical wind screen 122 and enters the fermentation bed 121. The air channel and negative pressure filtration are maintained under the action of the fan. The remaining wastewater is filtered through negative pressure fractionation and returned to the conversion tank 124. During the circulation process, the pollutants in the wastewater are degraded by the microorganisms on the biochemical wind screen 122 and the fermentation bed 121 (organic matter is oxidized and decomposed, and the main pollutant nitrogen is aerobic denitrified to become nitrogen gas and enter the atmosphere. The microorganisms (sludge) on the biochemical wind screen 122 and the fermentation bed 121 will be regularly cleaned and made into biofuel for reuse in the form of energy). Water molecules enter the atmosphere through physical enhanced evaporation, that is, with the help of natural evaporation of the huge surface area of ​​the biochemical wind screen 122 and the enhanced water molecule gasification of the fermentation bed 121 and the negative pressure evaporator 123, both water and pollutants are consumed and treated, and finally zero discharge of wastewater is achieved.

[0033] In some embodiments, the breeding house 1 is a pig house, which is convenient for collecting pig manure.

[0034] In some embodiments, the filter bed 4 is an aerobic filter bed, and the biogas tank 5 is an anaerobic biogas tank, which is convenient for treating wastewater.

[0035] In some embodiments, the microfiltration mechanism 3 is a roller-type microfiltration machine, which facilitates the solid-liquid separation of feces and sewage.

[0036] In some embodiments, the desulfurization mechanism 6 is a biogas desulfurizer, which is convenient for desulfurizing the biogas in the biogas tank.

[0037] In some embodiments, the oxidation pond 10 is provided with an aeration mechanism to facilitate aeration treatment of the oxidation pond.

[0038] In some embodiments, the sludge drying mechanism 11 is a solid-liquid separator to achieve secondary solid-liquid separation.

[0039] In some embodiments, the fermentation bed 121 is an aerobic fermentation bed.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A breeding wastewater treatment system with a biogas slurry evaporation wind screen, characterized by: The invention comprises a breeding house (1); the breeding house (1) is connected to a manure collection pool (2) through a pipeline; the discharge port of the manure collection pool (2) is connected to a microfiltration mechanism (3), a filter bed (4) and a biogas tank (5) in sequence through pipelines; the biogas tank (5) is provided with a desulfurization mechanism (6); the desulfurization mechanism (6) is provided with a fuel collection tank (7); the filter bed (4) is connected to a manure drying field (8) and a fuel tank (9) in sequence through a pipeline; the fuel collection tank (7) is connected to the fuel tank (9) for transmitting biogas; the biogas tank (5) is connected to an oxidation pond (10) and a sludge drying mechanism (11) in sequence through a pipeline; A fermentation wind screen system (12) is provided between the fuel tank (9) and the oxidation pond (10); the fermentation wind screen system (12) comprises: a fermentation bed (121); the oxidation pond (10) is connected to the fuel tank (9) via the fermentation bed (121) for filling the fuel tank (9); the fermentation bed (121) is connected to a negative pressure evaporator (123), a conversion tank (124) and a biochemical wind screen (122) in sequence.

2. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The breeding house (1) is a pig house.

3. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The filter bed (4) is an aerobic filter bed, and the biogas tank (5) is an anaerobic biogas tank.

4. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The microfiltration mechanism (3) is a rolling microfiltration machine.

5. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The desulfurization mechanism (6) is a biogas desulfurizer.

6. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The oxidation pond (10) is provided with an aeration mechanism.

7. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The sludge drying mechanism (11) is a solid-liquid separator.

8. The aquaculture wastewater treatment system with a biogas slurry evaporation wind screen according to claim 1 is characterized by: The fermentation bed (121) is an aerobic fermentation bed.

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