CN218709624U - Bioelectricity reinforced combination device for treating antibiotic-containing biogas slurry - Google Patents
Bioelectricity reinforced combination device for treating antibiotic-containing biogas slurry Download PDFInfo
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Abstract
The utility model relates to the technical field of sewage treatment, in particular to a bioelectricity-enhanced combined device for treating biogas slurry containing antibiotics, which comprises a biological filter tower, wherein a filter layer and a submerged layer are arranged in the biological filter tower, the filter layer is positioned above the submerged layer, a trickling filter layer is arranged between the filter layer and the submerged layer, and biogas residue biochar layers are filled in the filter layer and the submerged layer; the biogas residue biochar layer in the filtering layer is electrically connected with one end of the resistor, and the biogas residue biochar layer in the submerged layer is submerged in the resistorThe other end is electrically connected; the submerged layer is also filled with Fe 0 Iron filings, fe 0 The device is used for connecting two layers of biogas residue biochar of the biological filter tower, a filter layer is used as a cathode, a submerged layer is used as an anode, a microbial fuel cell with the biogas residue biochar as two poles is constructed, the bioelectricity strengthening effect is generated in the biological filter tower, and Fe is added below the anode 0 The iron filings provide an electron acceptor, accelerate the release of electrons and accelerate the reaction rate.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a bioelectricity reinforced combination device for treating antibiotic-containing biogas slurry.
Background
With the development of animal husbandry, antibiotics are abused more and more, but the antibiotics for animals cannot be completely absorbed by animals, and about 30% -90% of the antibiotics are excreted along with excrement of the animals. The mainstream process for treating the livestock and poultry breeding wastewater in China is biogas anaerobic fermentation, the biogas fermentation is an important way for reducing, harmlessly treating and recycling livestock and poultry manure, and the biogas slurry generated by the method contains nutrient substances such as nitrogen, phosphorus, potassium, amino acid, trace elements and the like required by crop growth, and is widely applied to agricultural production. However, excessive antibiotics remained in the excrement of the livestock and poultry cannot be completely removed through biogas fermentation, and certain harm can be caused to the environment when the biogas slurry containing the antibiotics is directly applied to farmlands.
Therefore, the biological filter tower is researched to remove antibiotics in the biogas slurry, and is a novel biochemical treatment structure introduced from abroad in the seventies. On the basis of a common biological filter, the chemical washing tower absorbs the principle of a chemical washing tower, develops to high altitude and is made into a vertical tower body. The tower body is a cylindrical structure with built-in filler, sewage is lifted to a water distributor at the top of the filter tower by a circulating water pump for water distribution, and under the action of gravity, wastewater flows through the filler from top to bottom and fully contacts and reacts with microorganisms attached to the filler. The pollutants in the sewage can be fully removed under the dual actions of the interception and filtration of the packing layer and the microbial degradation in the biomembrane. In addition, anaerobic and aerobic environments can be created for the microorganisms in the tower in a closed and aerated manner.
With the increasingly prominent global energy problem, the traditional biological filter tower cannot meet the requirement of energy conservation, and the research and development of a new treatment technology with low energy consumption and less pollution are urgent. As an innovative sewage treatment and energy recovery technology integrating sewage purification and power generation, a Microbial Fuel Cell (MFC) has been the focus of recent research and development, the anode of the MFC is in an anaerobic environment, so that anaerobic respiratory bacteria can effectively degrade organic matters and generate two substances (protons and electrons), the generated electrons are captured by the microbes of the anode and transferred to the cathode through an external circuit, and the protons are directly transferred to the cathode through a PEM (proton exchange membrane) or an electrolyte, and undergo a reduction reaction at the cathode and an electron acceptor to complete the transfer of charges inside the cell. But MFC has low power to generate electricity and therefore has a low reaction rate, thus preventing its practical application in water treatment.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a handle bioelectricity that contains antibiotic natural pond liquid and strengthen composite set in order to solve foretell at least one technical problem.
In order to realize the purpose of the utility model, the utility model provides a technical scheme as follows:
a bioelectricity-enhanced combined device for treating biogas slurry containing antibiotics comprises a biological filter tower, wherein a filter layer and a submerged layer are arranged in the biological filter tower, the filter layer is positioned above the submerged layer, a trickling filter layer is arranged between the filter layer and the submerged layer, and biogas residue biochar layers are filled in the filter layer and the submerged layer; the biogas residue biochar layer in the filtering layer is electrically connected with one end of the resistor, and the biogas residue biochar layer in the submerging layer is electrically connected with the other end of the resistor; the submerged layer is also filled with Fe 0 Iron filings, said Fe 0 The scrap iron is positioned below the biogas residue biochar layer in the submerged layer.
Preferably, the filter layer is formed by fine sand, a microporous filter plate is fixed below the fine sand, and the microporous filter plate supports the fine sand; the submerged layer is formed by medium sand, a medium-hole filter plate is fixed below the medium sand, and the medium-hole filter plate forms a support for the medium sand; the submerged layer and the microporous filter plate have a distance to form a trickling filter layer.
Preferably, a drainage layer is arranged below the middle-hole filter plate, the drainage layer is formed by gravels, and the gravels are filled on the bottom surface in the biological filter tower; a drip filter layer is formed between the drainage layer and the middle hole filter plate at a certain distance; an overflow layer is formed between the top surface in the biological filter tower and the filter layer, a water inlet head is fixed in the overflow layer and connected with a water inlet pipe, the water inlet pipe extends out of the biological filter tower, and a drain pipe is arranged at the bottom of the biological filter tower and communicated with the drain layer.
Preferably, the particle size range of the fine sand is 0.15 to 1.00mm; the particle size range of the medium sand is 0.25 to 0.5mm; the particle size range of the gravel is 0.5-1.00mm.
Preferably, an overflow layer, a first filtering layer, a biogas residue biochar layer, a second filtering layer, a trickling filter layer, a first submerging layer, a biogas residue biochar layer, a second submerging layer, a trickling filter layer and a drainage layer are formed in the biofiltration tower from top to bottom, and the corresponding proportion relationship is that;
the volume of the scrap iron accounts for 5% of the total volume of the submerged layer.
Preferably, the pore diameter of the micropores of the microporous filter plate and the pore diameter of the mesopores of the mesopore filter plate are respectively smaller than the particle diameter of the filler supported by the micropores.
Preferably, the aperture of the microporous filter plate is smaller than the particle size of fine sand, and the aperture of the mesoporous filter plate is smaller than the particle size of medium sand.
Preferably, the ratio of the inner diameter of the biological filter tower to the distance between two layers of biogas residue biochar is 8.
Preferably, the biological filter tower comprises a first biological filter tower and a second biological filter tower, the first biological filter tower is an anaerobic biological filter tower, and the second biological filter tower is an aerobic biological filter tower; a sewage lifting pump is installed on a water inlet pipe of the anaerobic biological filter tower, and a water outlet pipe of the anaerobic biological filter tower is connected with a water inlet pipe of the aerobic biological filter tower; the aerobic biological filter tower is at least provided with two drain pipes, one of the drain pipes is connected with the water inlet pipe of the anaerobic biological filter tower through a connecting pipe, and the connecting position is positioned between the sewage lifting pump and the anaerobic biological filter tower; the inlet tube of aerobe filtering tower with all install the backwash pump on the connecting pipe, the backwash pump is arranged in the inlet tube that flows corresponding drain pipe exhaust liquid drainage to corresponding.
Preferably, the top of the aerobic biological filter tower is provided with a ventilation pipe, and the ventilation pipe is communicated with the overflow layer; and a perforated aeration pipe is arranged in the drainage layer of the aerobic biofilter and connected with an air blower.
The utility model provides a handle bioelectricity that contains antibiotic natural pond liquid and strengthen composite set links to each other the two-layer natural pond sediment biochar of biological filter tower, uses the filter layer to be the negative pole, submerge the layer as the positive pole in the biological filter tower, and the microorganism fuel cell who uses natural pond sediment biochar as the two poles of the earth is found to the structure, makes the inside bioelectricity that produces of biological filter tower strengthen the effect, adds Fe in the below of positive pole simultaneously 0 The iron filings provide an electron acceptor, accelerate the release of electrons and accelerate the reaction rate.
Drawings
FIG. 1 shows one of the schematic partial sectional structures of a bioelectricity-enhanced combined device for treating antibiotic-containing biogas slurry provided by the present application;
FIG. 2 shows a second schematic diagram of a partial cross-sectional structure of a bioelectricity-enhanced combined device for treating antibiotic-containing biogas slurry provided by the present application;
in the drawings, the reference numbers:
the sewage treatment device comprises a sewage lifting pump 1, a water inlet head 2, a water inlet pipe 3, a reflux pump 4, a blower 5, a drain pipe 6, a connecting pipe 7, an overflow layer 8, a filter layer 9, a biogas residue biochar layer 10, a submerged layer 11, a drain layer 12 and Fe 0 Scrap iron 13, a microporous filter plate 14, a mesoporous filter plate 15, a trickling filter layer 16, a resistor 17, a copper wire 18, a perforated aeration pipe 19, a ventilation pipe 20, a first biological filter tower 100 and a second biological filter tower 100a.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiment 1, please refer to fig. 1, and the embodiment of the present application provides a bioelectricity-enhanced combined device for processing biogas slurry containing antibiotics, which includes a biological filter tower, wherein a filter layer 9 and a submerged layer 11 are arranged in the biological filter tower, the filter layer is located above the submerged layer, a trickling filter layer 16 is arranged between the filter layer and the submerged layer, and biogas residue biochar layers 10 are filled in both the filter layer and the submerged layer; the biogas residue biological carbon layer in the filtering layer is electrically connected with one end of the resistor, the biogas residue biological carbon layer in the submerging layer is electrically connected with the other end of the resistor, and the electrical connection can be realized by a copper wire 18 in the embodiment; the submerged layer is also filled with Fe 0 Iron filings 13, said Fe 0 The scrap iron 13 is positioned below the biogas residue biochar layer in the submerged layer; wherein the filtering layer is formed by fine sand, a microporous filtering plate 14 is fixed below the fine sand, and the microporous filtering plate supports the fine sand; the submerged layer is formed by medium sand, a medium-hole filter plate 15 is fixed below the medium sand, and the medium-hole filter plate forms a support for the medium sand; the submerged layer and the microporous filter plate are spaced to form a trickling filter layer; a drainage layer 12 is arranged below the middle hole filter plate, the drainage layer is formed by gravels, and the gravels are filled on the bottom surface in the biological filter tower; a drip filter layer is formed between the drainage layer and the middle hole filter plate at a certain distance; an overflow layer 8 is formed between the top surface in the biological filter tower and the filter layer, a water inlet head 2 is fixed in the overflow layer, the water inlet head can adopt the existing water inlet structures such as a spray head, and the water inlet head in a shape like a Chinese character feng is preferably used in the embodiment so as to facilitate uniform water distribution; the water inlet head is connected with a water inlet pipe 3, the water inlet pipe extends out of the biological filter tower, a drain pipe 6 is arranged at the bottom of the biological filter tower, and the drain pipe is communicated with the drain layer; in this example, the particle size of the fine sandThe range is 0.15 to 1.00mm; the particle size range of the medium sand is 0.25-0.5 mm, correspondingly, the aperture of the microporous filter plate is smaller than 0.15mm, and the aperture of the mesoporous filter plate is smaller than 0.25mm; the particle size range of the gravel is 0.5-1.00mm; an overflow layer, a first filtering layer, a biogas residue biochar layer, a second filtering layer, a trickling filter layer, a first submerged layer, a biogas residue biochar layer, a second submerged layer, a trickling filter layer and a drainage layer are formed in the biological filter tower from top to bottom, and the height ratio of the layers is (21); the volume of the scrap iron accounts for 5% of the total volume of the submerged layer; during manufacturing, the ratio of the inner diameter of the biological filter tower to the distance between two layers of biogas residue biochar is about 8.
When the bioelectricity-enhanced combined device for treating the antibiotic-containing biogas slurry is used, the biogas slurry enters through the water inlet pipe and is discharged to the overflow layer through the water inlet head, and then passes through the filter layer, and part of inorganic matter and organic matter particles are adsorbed and filtered by fine sand; the biogas residue biochar filled in the filter layer has stronger adsorption effect, the huge specific surface area of the biogas residue biochar can provide good growth environment for microorganisms, and is beneficial to degrading refractory substances such as antibiotics and the like, and meanwhile, organic matters and NH can be subjected to the actions such as ion exchange and the like 4 + 、NO 3 - 、PO 4 3- And performing direct adsorption on the substances, trickling the biogas slurry to a submerged layer through a microporous filter plate 14, treating the biogas slurry again, wherein the filter layer is a cathode and the submerged layer is an anode in the process, a microbial fuel cell with biogas residue biochar as two poles is constructed, a bioelectricity enhancing effect is generated in the biological filter tower, and Fe is added below the anode 0 The iron filings provide an electron acceptor, accelerate the release of electrons and accelerate the reaction rate.
Example 2, example 2 is a further improvement on example 1, and referring to fig. 2, the biological filter tower comprises a first biological filter tower 100 and a second biological filter tower 100a, the first biological filter tower is an anaerobic biological filter tower, and the second biological filter tower is an aerobic biological filter tower; a sewage lifting pump 1 is arranged on a water inlet pipe of the anaerobic biological filter tower, and a water outlet pipe of the anaerobic biological filter tower is connected with a water inlet pipe of the aerobic biological filter tower; the aerobic biological filter tower is at least provided with two drain pipes 6, one of the drain pipes is connected with a water inlet pipe of the anaerobic biological filter tower through a connecting pipe 7, and the connecting position is positioned between the sewage lifting pump and the anaerobic biological filter tower; the inlet tube of aerobe filtering tower with all install backwash pump 4 on the connecting pipe, the backwash pump is arranged in the inlet tube that corresponds drainage pipe exhaust liquid drainage to. In order to facilitate ventilation, a ventilation pipe 20 is arranged at the top of the aerobic biological filter tower and is communicated with the overflow layer; and a perforated aeration pipe 19 is arranged in the drainage layer of the aerobic biofilter, and the perforated aeration pipe is connected with an air blower 5.
This handle bioelectricity that contains antibiotic natural pond liquid and strengthen composite set when using, start sewage elevator pump and backwash pump, natural pond liquid enters into filter layer 9 after reaching anaerobism biological filter tower overflow layer 8, filter layer 9 is filled by the less fine sand of particle diameter and forms, natural pond liquid is when flowing through, partial inorganic matter and organic matter granule are filtered by filler adsorption, simultaneously the anaerobic environment of anaerobism biological filter tower can be so that facultative aerobe and anaerobism bacterium are with starch, the fibre, organic degradation such as carbohydrate is organic acid, turn into the micro molecule organic matter with the macromolecule organic matter, more do benefit to the microbial degradation of filter layer. The biogas residue biochar 10 filled in the filter layer 9 has strong adsorption effect, the huge specific surface area of the biogas residue biochar can provide a good growth environment for microorganisms, and the biogas residue biochar is beneficial to degrading refractory substances such as antibiotics and the like, and can also be used for degrading organic matters and NH (ammonia) through the actions such as ion exchange and the like 4 + 、NO 3 - 、PO 4 3- Etc. to perform direct adsorption. Later natural pond liquid is dripped through micropore filter 14 and is strained the submerged layer, and difficult degradation organic matters such as antibiotic are further degraded under anaerobic microorganisms's effect, and the denitrification takes place simultaneously, and ammonia nitrogen nitrate nitrogen etc. is got rid of, has promoted the holistic denitrogenation efficiency of device, and finally, natural pond liquid is dripped through mesopore filter 15 and is strained drainage blanket 12.
After the biogas slurry is discharged from the anaerobic biological filter tower, the biogas slurry flowing back to the overflow layer 8 of the aerobic biological filter tower enters an aerobic environment, due to the existence of the ventilation pipe 20, the filter layer 9 is contacted with air to form an unsaturated aerobic environment, macromolecular organic matters, ammonia nitrogen and the like which are not completely degraded are further degraded at the filter layer 9, the biogas residue activated carbon layer 10 and the submerged layer 11, after the biogas slurry is dripped to the drainage layer below, the content of dissolved oxygen is sufficient due to the fact that the biogas slurry is close to the perforated pipe 19, and the gravel filler provides a large specific surface area for microorganisms, at the moment, non-degradable unconventional pollutants such as antibiotics and the like are more easily removed, and finally, the biogas slurry of the drainage layer flows back to the overflow layer 8 of the anaerobic biological filter tower through the drainage pipes 6 on two sides of the bottom layer, one part of the biogas slurry flows back to the overflow layer 8 of the anaerobic biological filter tower through the reflux pump 4, and the other part of the biogas slurry is directly discharged.
In this embodiment, the biogas residue biochar 10 in the two biofilters also has the function of stimulating the microbial activity as the two poles of the microbial fuel cell. When the biogas slurry flows through the filtering layer 9 and the submerged layer 11 of the biological filtration tower, the biogas slurry is stimulated by the electrodes of the cathode and the anode of the biological fuel cell, so that the microbial activity is greatly increased, and the degradation rate and efficiency of pollutants are further enhanced under the action of bioelectricity enhancement; fe in submerged layer in biological filtration tower 0 The iron filings can be used as electrode material filler, can be used as electron donor, and can provide Fe 2+ The production and utilization rate of electrons are improved, and the reaction rate is improved.
As a using mode, as shown in fig. 2, the biogas slurry only enters from the anaerobic biofiltration tower in the device, the water inlet pipe vertically penetrates through the seal tank 7 to be connected with the fairy-shaped water inlet head 2 when entering, the purpose of uniform water distribution is achieved, the biogas slurry discharged from the drainage layer of the anaerobic biofiltration tank flows back to the overflow layer 8 of the aerobic biofiltration tower through the reflux pump 4, the reflux water inlet pipe vertically penetrates through the seal tank 7 to be connected with the fairy-shaped water inlet head 2, the biogas slurry flowing through the aerobic biofiltration tower is discharged from the drainage layer 12, one part of the biogas slurry flows back through the reflux pump, the reflux pipe is connected with the water inlet pipe 3, the other part of the biogas slurry is discharged, and the circulation is repeated, wherein the ratio of the water inlet flow to the water inlet flow of the aerobic biofiltration tower is 1, and the reflux ratio of the two towers is 1.
In conclusion, compared with the existing numerous biogas slurry treatment devices, the device has the following beneficial effects:
1. in the invention, the pretreated biogas slurry flows into an overflow layer of the anaerobic biological filter tower uniformly through the water inlet pipe and the roof-shaped water distribution head. At the moment, the biogas slurry flows from top to bottom in the anaerobic biofiltration tower, the biogas slurry flowing out of the anaerobic biofiltration tower enters the aerobic biofiltration tower through the reflux pump and is discharged from the drainage layer of the aerobic biofiltration tower, one part of the biogas slurry flows back to the anaerobic biofiltration tower again, and the other part of the biogas slurry is directly discharged. The biogas slurry passes through the overflow layer when entering the anaerobic biological filter tower and firstly reaches the filter layer, the filter layer is in an anaerobic state because the whole anaerobic biological filter tower is sealed, organic matters such as starch, fiber and carbohydrate can be degraded into organic acid by anaerobic bacteria under the assistance of facultative bacteria, macromolecular organic matters are converted into micromolecular organic matters, and meanwhile, inorganic matters and organic matters in the biogas slurry can be effectively filtered by the filler of the filter layer. The micropore filter plate arranged below the filter layer can uniformly filter the flowing biogas slurry to the submerged layer below the filter layer while supporting the filler. When the biogas slurry flows into the submerged layer, anaerobic reaction continues to occur, and as the particle size of the filler in the submerged layer is larger than that of the filter layer, a good growth environment is provided for microorganisms due to the larger specific surface area of the filler, and the pollutant removal capacity of the filler is enhanced. When the biogas slurry flows through the retention tank, denitrification reaction occurs, and the denitrification effect of the retention tank is enhanced. Finally, the biogas slurry passes through the mesoporous filter plate, enters the drainage layer in a trickling filtration mode and is finally discharged.
2. In the invention, the treated biogas slurry flows out of the drainage layer of the anaerobic biological filter tower and is pumped into the overflow layer of the aerobic biological filter tower through the reflux pump, the biogas slurry enters the aerobic reaction zone at the moment, the filter layer is in an unsaturated aerobic state due to the facility of the vent pipe of the overflow layer, and the ammonia nitrogen is converted into nitrite nitrogen and nitrate nitrogen in the biogas slurry flowing through the filter layer. The biogas slurry sequentially passes through the biogas residue biochar layer, the filter layer and the biogas residue biochar layer to further remove unconventional pollutants such as organic matters and antibiotics, and is uniformly dripped to the submerged layer below under the action of the microporous filter plate, and the filler has larger specific surface area than the filter layer, so that a good growth environment is provided for microorganisms, and the removal capability of the filler on the pollutants is enhanced. Meanwhile, due to the effect of the perforated aeration pipe, the whole of the submerged layer and the drainage layer are in an aerobic environment, and when the biogas slurry flows into the submerged layer and the drainage layer, the degradation effect of the microorganisms on organic matters can be strengthened to the greatest extent. One part of the treated biogas slurry is directly discharged, and the other part of the treated biogas slurry enters an overflow layer of the anaerobic biological filter tower through a reflux pump, and the steps are repeated in a circulating way.
3. In the invention, the biogas residue biochar used by the filler is prepared by carrying out solid-liquid separation and then pyrolysis on the livestock and poultry manure after anaerobic fermentation, the huge specific surface area of the biogas residue biochar can provide more adsorption sites, and the biogas residue activated carbon can carry out ion exchange action on NH when biogas slurry flows through the biogas residue biochar 4 + 、NO 3 - 、PO 4 3- And the biogas residues are utilized to fully embody the implementation of recycling the livestock and poultry manure.
4. In the invention, two layers of biogas residue biochar of a biological filter tower are connected through a lead, a filter layer is used as a cathode and a submerged layer is used as an anode in an anaerobic biological filter tower and an aerobic biological filter tower, a microbial fuel cell with the biogas residue biochar as two poles is constructed, bioelectricity strengthening effect is generated in the two towers, and meanwhile, zero-valent iron scrap is added below the anode to provide an electron acceptor, accelerate the release of electrons and accelerate the reaction rate.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It should be readily understood that "on 8230" \ 8230on "," on 82303030, and "on 82308230; \ 8230on" \ 8230, and "on 8230;" on 8230, should be interpreted in the broadest sense in this disclosure, such that "on 8230;" on not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above 8230or" above 8230 "\8230"; not only includes the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).
Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A bioelectricity-enhanced combined device for treating biogas slurry containing antibiotics comprises a biological filter tower and is characterized in that,
a filtering layer (9) and a submerged layer (11) are arranged in the biological filter tower, the filtering layer is positioned above the submerged layer, a trickling filter layer (16) is arranged between the filtering layer and the submerged layer, and biogas residue biochar layers (10) are filled in the filtering layer and the submerged layer;
the biogas residue biological carbon layer in the filtering layer is electrically connected with one end of the resistor, and the biogas residue biological carbon layer in the submerging layer is electrically connected with the other end of the resistor;
the submerged layer is also filled with Fe 0 Iron filings (13), said Fe 0 The scrap iron (13) is positioned below the biogas residue biochar layer in the submerged layer.
2. The bioelectrical enhanced assembly device for treating biogas slurry containing antibiotics according to claim 1, wherein the filter layer is formed by fine sand, a microporous filter plate (14) is fixed below the fine sand, and the microporous filter plate forms a support for the fine sand;
the submerged layer is formed by medium sand, a medium-hole filter plate (15) is fixed below the medium sand, and the medium-hole filter plate forms a support for the medium sand;
the submerged layer and the microporous filter plate have a distance to form a trickling filter layer.
3. The bioelectricity-enhanced combined device for treating antibiotic-containing biogas slurry as recited in claim 2, wherein a drainage layer (12) is provided below the middle-hole filter plate, the drainage layer is formed by gravels, and the gravels are filled on the bottom surface in the biological filter tower;
a drip filter layer is formed between the drainage layer and the middle hole filter plate at a certain distance;
an overflow layer (8) is formed between the top surface in the biological filter tower and the filter layer, a water inlet head (2) is fixed in the overflow layer and connected with a water inlet pipe (3), the water inlet pipe extends out of the biological filter tower, a drain pipe (6) is arranged at the bottom of the biological filter tower, and the drain pipe is communicated with the drain layer.
4. The bioelectricity-reinforced combined device for treating antibiotic-containing biogas slurry as recited in claim 3, wherein the fine sand has a particle size ranging from 0.15 to 1.00mm;
the particle size range of the medium sand is 0.25 to 0.5mm;
the particle size range of the gravel is 0.5-1.00mm.
5. The bioelectricity-reinforced combination device for treating biogas slurry containing antibiotics according to claim 4, wherein the overflow layer, the first filter layer, the biogas residue biochar layer, the second filter layer, the trickling filter layer, the first submerged layer, the biogas residue biochar layer, the second submerged layer, the trickling filter layer and the drainage layer are formed in the biological filtration tower from top to bottom, and the ratio of the overflow layer to the first filter layer to the biogas residue biochar layer to the second filter layer is from 21;
the volume of the scrap iron accounts for 5% of the total volume of the submerged layer.
6. The bioelectricity-enhanced combined device for treating antibiotic-containing biogas slurry as recited in claim 2, wherein the pore size of the micropores of the microporous filter plate and the pore size of the mesopore filter plate are respectively smaller than the supported filler particle size.
7. The bioelectrical enhanced assembly according to claim 2, wherein the pore size of the microporous filter plate is smaller than the particle size of the fine sand, and the pore size of the mesoporous filter plate is smaller than the particle size of the medium sand.
8. The bioelectrical enhanced combination device for treating biogas slurry containing antibiotics according to claim 1, wherein the ratio of the inner diameter of the biological filter tower to the distance between two layers of biogas residue biochar is 8.
9. The bioelectrical enhancement assembly according to any one of claims 3 to 5, wherein the biological filtration tower comprises a first biological filtration tower (100) and a second biological filtration tower (100 a), the first biological filtration tower is an anaerobic biological filtration tower, and the second biological filtration tower is an aerobic biological filtration tower;
a sewage lifting pump (1) is installed on a water inlet pipe of the anaerobic biological filter tower, and a water outlet pipe of the anaerobic biological filter tower is connected with a water inlet pipe of the aerobic biological filter tower;
the aerobic biological filter tower is at least provided with two drain pipes, one of the drain pipes is connected with a water inlet pipe of the anaerobic biological filter tower through a connecting pipe (7), and the connecting position is positioned between the sewage lifting pump and the anaerobic biological filter tower;
the inlet tube of aerobe filtering tower with all install backwash pump (4) on the connecting pipe, the backwash pump is arranged in the inlet tube that corresponds drain pipe exhaust liquid drainage to.
10. The bioelectricity-enhanced combined device for treating antibiotic-containing biogas slurry as recited in claim 9, wherein a vent pipe (20) is provided at the top of the aerobic biofilter tower, the vent pipe communicating with the overflow layer;
a perforated aeration pipe (19) is arranged in a drainage layer of the aerobic biofilter tower and is connected with an air blower (5).
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| CN116425377A (en) * | 2023-04-12 | 2023-07-14 | 安徽环境科技研究院股份有限公司 | Livestock and poultry breeding wastewater integrated small test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425377A (en) * | 2023-04-12 | 2023-07-14 | 安徽环境科技研究院股份有限公司 | Livestock and poultry breeding wastewater integrated small test device |
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