CN117164184B - Mobile aquaculture sewage treatment system - Google Patents
Mobile aquaculture sewage treatment system Download PDFInfo
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- CN117164184B CN117164184B CN202311453183.8A CN202311453183A CN117164184B CN 117164184 B CN117164184 B CN 117164184B CN 202311453183 A CN202311453183 A CN 202311453183A CN 117164184 B CN117164184 B CN 117164184B
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- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a movable aquaculture sewage treatment system, which belongs to the technical field of sewage treatment and comprises a movable vehicle body, wherein a tank body is arranged on the movable vehicle body, an inner cavity of the tank body is divided into a pre-sedimentation area, an anoxic reaction area, an aerobic reaction area and an antibiotic adsorption area by a partition plate, and a water inlet pipe is arranged on the side wall of the tank body and communicated with the bottom of the pre-sedimentation area; the top of the pre-precipitation zone is communicated with the bottom of the anoxic reaction zone through a first water pipe, a first filler is arranged in the anoxic reaction zone, the top of the anoxic reaction zone is communicated with the bottom of the aerobic reaction zone through a second water pipe, a second filler is arranged in the aerobic reaction zone, an aeration device is arranged at the bottom of the aerobic reaction zone, the top of the aerobic reaction zone is communicated with the bottom of the antibiotic adsorption zone through a third water pipe, and an antibiotic adsorption filler is arranged in the antibiotic adsorption zone. The invention has flexible use and can reduce the tail water treatment cost of aquaculture enterprises.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a movable aquaculture sewage treatment system.
Background
At present, the aquaculture tail water is treated by using a common biochemical and ecological treatment technology (such as ecological ditches, precipitation, filtration, oxidation, ecological purification and the like), and the following defects exist:
1. the fixed tail water treatment facilities are built, the occupied area is large, and the characteristics that the cultivation tail water is only discharged for a period of time in a concentrated mode and is treated for a period of time in a concentrated mode cannot be dealt with, so that space and time are wasted, and economic benefit is lost.
The unit area ratio of the cultivation tail water treatment facility is as follows: the unit area of the tail water treatment facility should be designed according to the factors such as the cultivation variety, cultivation density, yield, drainage hydraulic retention time and the like according to local conditions. The tail water treatment facility unit comprises an ecological ditch, a sedimentation tank, a filtering dam, an aeration tank, an ecological purification tank and the like, the total area of the tail water treatment facility unit needs to reach a certain proportion of the total cultivation area, and the facility area proposal requirements of the tail water treatment facility unit according to different cultivation varieties are as follows: (1) The total area of tail water treatment facilities of carnivorous fishes such as mandarin fish, weever, snakehead and the like is not less than 8% of the total cultivation area; the total area of tilapia, four large-scale domestic fishes and other cultured varieties is not less than 6 percent. (2) The total area of the shrimp tail water treatment facilities is not less than 5% of the total cultivation area, and the crab tail water treatment facilities is not less than 3% of the total cultivation area. (3) The total area of tail water treatment facilities for turtle and eel is not less than 10% of the total area of cultivation.
In general, each processing unit is built by adopting a reinforced concrete or brick-concrete structure, the total occupied area is almost 10% of the cultivation area, if the area of a freshwater farm is 300 mu, the total occupied area of facility units for processing tail water is not less than 19980 square meters, and when the cultivated area is protected from loss and the land is fully covered, the large occupied area is difficult to meet.
2. The existing facilities need to build large sedimentation tanks or structures for storing the bottom mud to ensure that the tail water discharge reaches the corresponding standard limit value, and the structures for storing the bottom mud can cause certain influence on the surrounding environment due to long-term stacking of the bottom mud, untimely transfer and the like.
The sedimentation tank constructed at the present stage is mainly used for removing suspended substances in water bodies, and mostly adopts a steel concrete structure form. The area of the sedimentation tank accounts for 30-40% of the total area of the treatment facility, and the sedimentation tank needs to be arranged at a relatively convenient place of the farm in traffic as much as possible, so that sediment can be conveniently fished and treated. And the sediment in the culture pond needs to be pumped into a corresponding stacking pond body for storing the sediment, so that the floor area is large, and secondary pollution can be caused to the surrounding environment during the sediment stacking period.
3. Most of the existing tail water treatment facilities are fixed structures, and once the tail water treatment facilities are built, the tail water treatment facilities must be used for a long time, otherwise, the facilities are idle. Because the drainage of the aquaculture tail water is influenced by factors such as cultivation habit, cultivation variety growth cycle, substrate sludge cleaning cycle and the like, the treatment requirement of the aquaculture tail water is concentrated in a certain period, the drainage amount is large, the bottom sludge discharge amount is also large during centralized treatment, if a fixed aquaculture tail water treatment facility is built, on one hand, a farmer needs to vacate a separate fishpond for constructing a tail water treatment system, on the other hand, operation and maintenance personnel also need to maintain the microbial activity (such as nitrifying bacteria, denitrifying bacteria and the like) of biochemical processes in the tail water treatment system in the period of not discharging the tail water, and structures such as substrate sludge storage, drying and the like need to be independently built. The trouble that the cultivation area must be reduced, the yield is reduced, and the fixed facilities and structures are constructed to meet the tail water treatment is brought to the cultivation unit. In addition, the variable drainage and sludge discharge period cannot be allocated, and if the cultivation scale is enlarged, the fixed tail water treatment system faces the problem of capacity expansion, the variable water quantity and water quality cannot be dealt with in a short time, and the influence capability of water quality and water quantity impact resistance is weak.
4. The antibiotics and resistance genes thereof remained in the tail water of the culture discharge cannot be effectively removed, and the tail water of the culture discharge is discharged into the natural environment, so that the biological and ecological environments are seriously threatened.
In aquaculture activities, antibiotics are often used for the prevention and treatment of diseases or as feed additives for promoting the growth of cultured organisms, however, only 20% -30% of antibiotics are absorbed and utilized, and the rest of antibiotics are discharged along with food residues and feces and finally enter the water environment, so that aquaculture industry is considered as one of the main sources of antibiotics in the environment.
Disclosure of Invention
The invention aims to provide a movable aquaculture sewage treatment system for solving the problems.
In order to solve the problems, the invention adopts the following technical scheme: the movable aquaculture sewage treatment system comprises a movable vehicle body, wherein a tank body is arranged on the movable vehicle body, the inner cavity of the tank body is divided into a pre-sedimentation zone, an anoxic reaction zone, an aerobic reaction zone and an antibiotic adsorption zone by a partition plate, the side wall of the tank body is provided with a water inlet pipe, and the water inlet pipe is communicated with the bottom of the pre-sedimentation zone; the top of the pre-precipitation zone is communicated with the bottom of the anoxic reaction zone through a first water pipe, a first filler is arranged in the anoxic reaction zone, the top of the anoxic reaction zone is communicated with the bottom of the aerobic reaction zone through a second water pipe, a second filler is arranged in the aerobic reaction zone, an aeration device is arranged at the bottom of the aerobic reaction zone, the top of the aerobic reaction zone is communicated with the bottom of the antibiotic adsorption zone through a third water pipe, and an antibiotic adsorption filler is arranged in the antibiotic adsorption zone.
Further, the tank body is a metal tank body, and a shock absorption layer is arranged between the metal tank body and the movable vehicle body.
Further, be provided with vertical honeycomb duct in the preliminary sedimentation district, the internal diameter of honeycomb duct lower extreme is greater than the internal diameter of upper end, the below of honeycomb duct is provided with conical baffle, the pointed end of baffle up, inlet tube and honeycomb duct intercommunication.
Further, still include the sediment pressure filter, the one end of sediment pressure filter is connected with into mud pipe and wash pipe, and the other end is provided with the mud mouth, the below of mud mouth is provided with horizontal screw conveyer pipe, the bottom of sediment pressure filter is provided with the drain pipe.
Further, a sludge pump is arranged at the bottom of the pre-sedimentation zone, and the sludge pump is connected with a sludge inlet pipe through a pipeline.
Further, the antibiotic adsorption area is divided into a full adsorption area, a middle transition area and a water outlet area by two vertical baffle plates, and the third water delivery pipe is communicated with the bottom of the full adsorption area; the antibiotic adsorption filler comprises a first activated carbon fiber filler, a second activated carbon fiber filler and a third activated carbon fiber filler, wherein the first activated carbon fiber filler, the second activated carbon fiber filler and the third activated carbon fiber filler are respectively arranged in a full adsorption area, a middle transition area and a water outlet area, and the pore diameters of the first activated carbon fiber filler, the second activated carbon fiber filler and the third activated carbon fiber filler are sequentially increased.
Further, the first activated carbon fiber filler comprises a plurality of filler layers, each filler layer comprises a plurality of horizontal filler columns, each filler column comprises a supporting framework and a porous activated carbon fiber layer which are sequentially arranged from inside to outside, a plurality of rough carbon fiber sleeves are nested on the filler column of at least one filler layer, and a burr layer is arranged on the outer wall of each rough carbon fiber sleeve.
Further, a plurality of pairs of horizontal supporting rods are arranged in the full adsorption area, a plurality of hanging rings are arranged on the supporting rods, hooks are arranged at two ends of each filling column, and the hooks are hung on the hanging rings.
Further, the side wall of the supporting rod is provided with a sliding groove, a sliding block in sliding fit with the sliding groove is arranged in the sliding groove, and the hanging ring is fixedly arranged on the sliding block.
Further, overflow weirs are arranged at the tops of the side walls of the pre-precipitation zone, the anoxic reaction zone and the aerobic reaction zone, and the upper ends of the first water conveying pipe, the second water conveying pipe and the third water conveying pipe are respectively communicated with the overflow weirs of the pre-precipitation zone, the anoxic reaction zone and the aerobic reaction zone.
The beneficial effects of the invention are as follows: 1. the system can move along with the whole movable vehicle body, when a certain aquaculture enterprise needs to carry out tail water treatment, the movable vehicle body is started to the aquaculture enterprise, and the tail water treatment is carried out by utilizing the treatment pool on the movable vehicle body. After the treatment is completed, the movable vehicle body can be started to the next aquaculture enterprise. The aquaculture enterprises do not need to build fixed tail water treatment facilities, the occupied area is saved, the tail water treatment cost is reduced, a plurality of aquaculture enterprises can share a plurality of treatment systems of the invention, the treatment systems are fully utilized, and the problem of idling does not occur.
2. The system can jointly use a plurality of treatment systems according to the aquaculture scale to jointly treat the aquaculture tail water, so that the treatment efficiency is improved.
3. The system is provided with the antibiotic adsorption area, so that antibiotics in tail water can be effectively removed, and environmental health risks caused by the problem of antibiotic residue in the tail water can be effectively prevented. The treated tail water quality can reach the tail water discharge standard or the recycling standard of aquaculture, can be reused in aquaculture ponds or used for the digestion of surrounding farmlands, orchards, forest lands and the like, can reach the standard and be discharged into the receiving water body, and has good environmental benefit, economic benefit and social benefit.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the cell body of the present invention;
FIG. 3 is a schematic view of the installation of a sediment filter;
FIG. 4 is a schematic top view of an antibiotic adsorption zone;
FIG. 5 is a schematic view in front cross-section of a fully adsorbed zone;
FIG. 6 is a schematic side cross-sectional view of a fully adsorbed zone;
FIG. 7 is a schematic cross-sectional view of A-A of FIG. 6;
FIG. 8 is an enlarged schematic view of portion B of FIG. 6;
reference numerals: 1-a mobile vehicle body; 2, a pool body; 3-a pre-precipitation zone; 4-an anoxic reaction zone; 5-an aerobic reaction zone; 6-antibiotic adsorption zone; 7-a water inlet pipe; 8-a first water delivery pipe; 9-a first filler; 10-a second water delivery pipe; 11-a second filler; 12-an aeration device; 13-a third water pipe; 14-a flow guiding pipe; 15, a baffle; 16-a bottom mud filter press; 17-a mud inlet pipe; 18-flushing pipe; 19-a mud discharging port; 20-a spiral conveying pipe; 21-a drain pipe; 22-a sludge pump; 23-baffle plate; 24-a full adsorption zone; 25-an intermediate transition zone; 26-a water outlet area; 27-a first activated carbon fibrous filler; 28-a second activated carbon fibrous filler; 29-a third activated carbon fibrous filler; 30-supporting the framework; 31-a porous activated carbon fiber layer; 32-a rough carbon fiber sleeve; 33-burr layer; 34-supporting rods; 35-hanging ring; 36-hooking; 37-slide block; 38-overflow weir; 39-a water inlet cylinder; 40-a piston; 41-a water outlet; 42-supporting columns; 43-a guide sleeve; 44-a compression spring; 45-supporting frames; 46-a transmission column.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The movable aquaculture sewage treatment system comprises a movable vehicle body 1, wherein a tank body 2 is arranged on the movable vehicle body 1, the inner cavity of the tank body 2 is divided into a pre-sedimentation zone 3, an anoxic reaction zone 4, an aerobic reaction zone 5 and an antibiotic adsorption zone 6 by a partition plate, the side wall of the tank body 2 is provided with a water inlet pipe 7, and the water inlet pipe 7 is communicated with the bottom of the pre-sedimentation zone 3; the top of the pre-precipitation zone 3 is communicated with the bottom of the anoxic reaction zone 4 through a first water pipe 8, a first filler 9 is arranged in the anoxic reaction zone 4, the top of the anoxic reaction zone 4 is communicated with the bottom of the aerobic reaction zone 5 through a second water pipe 10, a second filler 11 is arranged in the aerobic reaction zone 5, and the filling rate of the first filler 9 and the second filler 11 is about 75%. The bottom of the aerobic reaction zone 5 is provided with an aeration device 12, the top of the aerobic reaction zone 5 is communicated with the bottom of the antibiotic adsorption zone 6 through a third water pipe 13, and antibiotic adsorption fillers are arranged in the antibiotic adsorption zone 6.
The movable car body 1 can adopt the existing car body similar to a truck, can be provided with power equipment, and can move by means of the power equipment or be driven by a trailer. The movable vehicle body 1 can flexibly move to each aquaculture base, so that tail water of the aquaculture base can be treated.
The shape of the tank body 2 is cuboid, and is formed by welding metal plates, and particularly can be manufactured by adopting corrosion-resistant carbon steel plates or 304 stainless steel plates. The tank body 2 is detachably mounted on the mobile vehicle body 1, and can be mounted on a frame of the mobile vehicle body 1 through bolts. In the process of moving the movable vehicle body 1, in order to reduce the vibration of the tank body 2, a damping layer is arranged between the tank body 2 and the movable vehicle body 1, and the damping layer is made of common damping materials.
The baffle plates can be welded in the tank body 2, and the pre-precipitation zone 3, the anoxic reaction zone 4, the aerobic reaction zone 5 and the antibiotic adsorption zone 6 are respectively used for carrying out precipitation treatment, anoxic treatment, aerobic treatment and antibiotic adsorption treatment on tail water. The specific treatment process comprises the following steps:
the water inlet pipe 7 is connected with an aquaculture pond through a pipeline, tail water in the pond is conveyed to the water inlet pipe 7 by a water pump, the tail water flows to the bottom of the pre-sedimentation zone 3 through the water inlet pipe 7, flocculating agents can be added into the water inlet pipe 7 at the same time, suspended matters, scum and the like in the tail water are mutually gathered to form large-volume solid impurities, the solid impurities are precipitated to the bottom of the pre-sedimentation zone 3, solid impurities such as solid excreta of culture varieties in the tail water are also precipitated to the bottom of the pre-sedimentation zone 3, and part N, P pollutants can be removed. The tail water after precipitation flows upwards to the upper port of the first water pipe 8, then flows to the bottom of the anoxic reaction zone 4 through the first water pipe 8, the tail water gradually flows upwards from the bottom of the anoxic reaction zone 4, and the first packing 9 in the anoxic reaction zone 4 can be braided packing, so that the braided packing is suspended in the anoxic reaction zone 4. Anoxic and anaerobic bacteria can be attached to the first filler 9 to biochemically treat the tail water. When the tail water flows to the top of the anoxic reaction zone 4, the tail water flows into the bottom of the aerobic reaction zone 5 through the second water pipe 10. The aeration device 12 is used for aerating the aerobic reaction zone 5, so that the dissolved oxygen in the tail water is increased to about 4mg/L, and the aeration device 12 can be specifically a porous aeration disc and other existing equipment. The second packing 11 in the aerobic reaction zone 5 can also adopt a braid packing, and is suspended in the aerobic reaction zone 5. Aerobic bacteria can be attached to the second filler 11 to biochemically treat the tail water. After anoxic and aerobic bacterial treatment, most of nitrogen, phosphorus and other pollutants in the tail water are removed. When the tail water flows to the top of the aerobic reaction zone 5, the tail water flows to the bottom of the antibiotic adsorption zone 6 through the third water pipe 13 and then gradually flows upwards, and the antibiotic adsorption filler in the antibiotic adsorption zone 6 can adsorb antibiotics in the tail water, so that the concentration of the antibiotics is reduced, SS (activated sludge) in the water can be removed, and the tail water treatment effect is improved.
The invention can flexibly select the tail water treatment time along with the movement of the movable vehicle body 1 to any aquaculture base, and an aquaculture enterprise does not need to build a fixed tail water treatment facility, thereby saving the occupied area and reducing the tail water treatment cost. The tail water of a plurality of cultivation bases can be treated successively, the treatment system is fully utilized, the problem of idling does not occur, and compared with a fixed treatment facility, the tail water treatment system has the advantages of higher utilization rate and lower cost of cultivation enterprises.
In addition, the system is provided with the antibiotic adsorption zone 6, so that antibiotics in tail water can be effectively removed, and environmental health risks caused by the problem of antibiotic residue in the tail water can be effectively prevented. The treated tail water quality can reach the tail water discharge standard or the recycling standard of aquaculture, can be reused in aquaculture ponds or used for the digestion of surrounding farmlands, orchards, forest lands and the like, can reach the standard and be discharged into the receiving water body, and has good environmental benefit, economic benefit and social benefit.
The system is flexible and convenient to use, and after the movable car body 1 is opened or towed to a destination, a conveying pipeline is connected to the water inlet pipe 7, and electric equipment is connected to a local power supply to operate.
In order to improve the sedimentation effect, a vertical flow guide pipe 14 is arranged in the pre-sedimentation area 3, the inner diameter of the lower end of the flow guide pipe 14 is larger than that of the upper end, a conical baffle 15 is arranged below the flow guide pipe 14, the tip of the baffle 15 faces upwards, and the water inlet pipe 7 is communicated with the flow guide pipe 14. The tail water enters the flow guide pipe 14 through the water inlet pipe 7, then flows to the lower port of the flow guide pipe 14, flows from the upper side of the baffle plate 15 from the periphery, and the heavier solid impurities in the tail water are stopped by the baffle plate 15 and stay on the upper surface of the baffle plate 15, and then gradually slide down along the baffle plate 15 to the bottom of the pre-sedimentation zone 3. The baffle 15 can also slow down the impact of the inlet water to the sludge at the bottom of the pre-sedimentation zone 3, so as to prevent the sedimented sludge from entering the water again after being impacted by the inlet water.
Because the pond can generate the bottom mud, in order to facilitate the treatment of the bottom mud at the same time, the invention also comprises a bottom mud press filter 16, one end of the bottom mud press filter 16 is connected with a mud inlet pipe 17 and a flushing pipe 18, the other end is provided with a mud discharge port 19, a horizontal spiral conveying pipe 20 is arranged below the mud discharge port 19, and the bottom of the bottom mud press filter 16 is provided with a drain pipe 21. The sludge press 16 may be of a conventional type, such as a twin screw press.
The mud inlet pipe 17 is used for introducing pond sediment to be treated, the mud discharge port 19 is used for discharging the sediment after filter pressing, the spiral conveying pipe 20 is used for conveying the sediment out of the movable car body 1, and the water discharge pipe 21 is used for discharging pressed water. The flushing pipe 18 is used for flushing water, and after the press filtration is completed, the sediment filter 16 is flushed.
The sediment filter press 16 can be arranged on the same mobile car body 1 with the tank body 2, and is suitable for treating tail water and sediment of a small-sized aquaculture base. The sludge press filter 16 and the tank body 2 can be respectively arranged on different movable vehicle bodies 1, can be used separately, and can also be matched with each other. When the sediment filter press 16 is installed, a protection pool is firstly installed on the movable car body 1, the protection pool is formed by welding corrosion-resistant carbon steel plates, and the thickness of the carbon steel plates is 6-8 mm. The bottom mud filter press 16 is arranged inside the protection pool, the top of the protection pool is covered with a deodorizing cover, a deodorizing port is arranged on the deodorizing cover, and the deodorizing port can be connected with a deodorizing pipeline for treating odor when the bottom mud is subjected to filter pressing.
In order to clean the sludge at the bottom of the pre-sedimentation zone 3 in time, the bottom of the pre-sedimentation zone 3 is provided with a sludge pump 22, and the sludge pump 22 is connected with a sludge inlet pipe 17 through a pipeline. The sludge pump 22 can convey the precipitated sludge to the sludge inlet pipe 17, and the sludge is subjected to filter pressing by the sludge press filter 16, so that the precipitated sludge is discharged and treated. The water discharged from the water discharge pipe 21 may be also fed to the water inlet pipe 7 to be treated by the pre-precipitation zone 3, the anoxic reaction zone 4, the aerobic reaction zone 5 and the antibiotic adsorption zone 6. It can be seen that the sediment filter press 16 and the tank body 2 are mutually matched, so that tail water and sediment generated by the aquaculture base can be effectively treated, effluent water meeting the emission standard is obtained, and sediment with low water content is obtained.
In order to ensure that antibiotics in tail water are fully adsorbed, the antibiotic adsorption zone 6 is divided into a full adsorption zone 24, a middle transition zone 25 and a water outlet zone 26 by two vertical baffle plates 23, and a third water pipe 13 is communicated with the bottom of the full adsorption zone 24; the antibiotic adsorption packing includes a first activated carbon fiber packing 27, a second activated carbon fiber packing 28, and a third activated carbon fiber packing 29, the first activated carbon fiber packing 27, the second activated carbon fiber packing 28, and the third activated carbon fiber packing 29 are respectively disposed in the full adsorption zone 24, the intermediate transition zone 25, and the water outlet zone 26, and the pore diameters of the first activated carbon fiber packing 27, the second activated carbon fiber packing 28, and the third activated carbon fiber packing 29 are sequentially increased.
The two baffles 23 are respectively fixed on two side walls of the antibiotic adsorption zone 6, so that tail water flows in an S shape in the antibiotic adsorption zone 6, thereby increasing the flow path and prolonging the residence time in the antibiotic adsorption zone 6, and further ensuring the sufficient adsorption of antibiotics. The full adsorption zone 24 plays a main adsorption role, and can remove most antibiotics, and the intermediate transition zone 25 and the water outlet zone 26 perform auxiliary adsorption. The tail water reaching the top of the water outlet area 26 meets the discharge standard and can be discharged to the culture pond or natural water body through a water outlet.
The activated carbon fiber filler has the characteristics of multiple holes, and has larger contact area with tail water and good adsorption effect.
Since the present invention integrates a plurality of tail water treatment cavities in the tank body 2, the space of the antibiotic adsorption zone 6 is limited, and the tail water must stay in the full adsorption zone 24 for a long enough time in order to ensure the adsorption effect, therefore, in order to prolong the stay time of the tail water, the first activated carbon fiber packing 27 of the present invention comprises a plurality of packing layers, each packing layer comprises a plurality of horizontal packing columns, each packing column comprises a supporting framework 30 and a porous activated carbon fiber layer 31, which are sequentially arranged from inside to outside, a plurality of rough carbon fiber sleeves 32 are nested on the packing column of at least one packing layer, and the outer wall of the rough carbon fiber sleeve 32 is provided with a burr layer 33.
Specifically, the first activated carbon fiber filler 27 may be an upper, middle or lower filler layer, or may be four, five or six filler layers. The shape of the filling column is cuboid, and two adjacent side surfaces are in transition through an arc surface. The supporting frame 30 may employ a steel wire mesh drum or the like for supporting the porous activated carbon fiber layer 31. The porous activated carbon fiber layer 31 is coated on the outer surface of the supporting framework 30. The porous activated carbon fiber layer 31 has the characteristics of being porous, has large contact area with tail water and good adsorption effect, and can be made of activated carbon fiber yarns.
The rough carbon fiber cover 32 is a carbon fiber cover with a rough surface, specifically, the rough carbon fiber cover 32 may be a carbon fiber cloth, and a burr layer 33 is formed on the outer side surface of the carbon fiber cloth. The burr layer 33 can be obtained by means of mechanical scraping, in particular by means of the following shaping:
the carbon fiber cloth is flattened and fixed on a horizontal supporting surface, a scraping block with rough surface is utilized to move along the upper surface of the carbon fiber cloth, the carbon fiber cloth is scraped to form a burr layer 33, and then the carbon fiber cloth is rolled into a cylinder shape, so that the rough carbon fiber sleeve 32 is obtained.
The burr layer 33 functions to increase the resistance of the flowing water, thereby reducing the flow rate of the tail water, and thereby extending the residence time of the tail water in the full adsorption zone 24. According to the water flow characteristics, the water flow speed of the surface layer is generally higher than that of the middle and lower layers, so that the coarse carbon fiber sleeves 32 can be nested on the uppermost layer of filling column, the coarse carbon fiber sleeves 32 are not arranged on the middle and lower layers of filling columns, the water flow speed of the upper layer can be slowed down, the residence time of the upper layer of water is prevented from being too short, and antibiotics in the upper layer of water and the middle and lower layers of water are uniformly adsorbed.
The burr layer 33 formed by scraping is generally soft, and may bend along the water flow direction under the scouring of the water flow when the water flow passes through, so that the resistance increasing effect is reduced. Therefore, after the burr layer 33 is formed, a small amount of waterproof resin can be sprayed to the burr layer 33, after the waterproof resin is solidified, the burr layer 33 is solidified, the shape is kept fixed, the burr layer is not deformed when being washed by water flow, and the stable resistance increasing effect is ensured.
The adsorption capacity of the porous activated carbon fiber layer 31 is limited, and after a period of use, the filler column needs to be removed to desorb the porous activated carbon fiber layer 31, and a new filler column is installed. In order to facilitate disassembly and replacement of the filling columns, a plurality of pairs of horizontal supporting rods 34 are arranged in the full adsorption area 24, a plurality of hanging rings 35 are arranged on the supporting rods 34, hooks 36 are arranged at two ends of each filling column, and the hooks 36 are hung on the hanging rings 35. Each packing layer is supported by a pair of horizontal support rods 34, and each packing column is hung on the support rod 34 without other connecting pieces, so that the disassembly and the assembly are very convenient and quick.
In order to facilitate the adjustment of the distance between two adjacent packing columns, the side wall of the supporting rod 34 is provided with a sliding groove, a sliding block 37 in sliding fit with the sliding groove is arranged in the sliding groove, and the hanging ring 35 is fixedly arranged on the sliding block 37. The sliding block 37 can be slid to adjust the distance between two adjacent packing columns. In order to keep the slide blocks 37 stable and prevent them from automatically sliding, a pressing plate can be arranged at the top of the chute, a plurality of springs are arranged between the upper surface of the pressing plate and the top wall of the chute, and the pressing plate presses each slide block 37 under the action of spring force.
The second activated carbon fiber filler 28 and the third activated carbon fiber filler 29 also include multiple layers of filler columns, each of which is installed in the same manner as the first activated carbon fiber filler 27.
In the invention, overflow weirs 38 are arranged at the tops of the side walls of the pre-precipitation zone 3, the anoxic reaction zone 4 and the aerobic reaction zone 5, and the upper ends of the first water conveying pipe 8, the second water conveying pipe 10 and the third water conveying pipe 13 are respectively communicated with the overflow weirs 38 of the pre-precipitation zone 3, the anoxic reaction zone 4 and the aerobic reaction zone 5. When the tail water flows to the tops of the pre-precipitation zone 3, the anoxic reaction zone 4 and the aerobic reaction zone 5, the tail water flows into the overflow weir 38 and then flows to the next zone through the first water conveying pipe 8, the second water conveying pipe 10 or the third water conveying pipe 13, the tail water automatically overflows, power equipment is not needed, the operation is stable, and the cost is low.
When the tail water flows in the full adsorption zone 24, the horizontal flow is dominant, so that part of the tail water flows into the intermediate transition zone 25 without being fully contacted with the packing column, and antibiotics in the tail water cannot be fully adsorbed. In order to promote the tail water to flow up and down, one end of a full adsorption zone 24 is provided with a water inlet cylinder 39, a piston 40 is arranged in the water inlet cylinder 39, the side wall of the water inlet cylinder 39 is provided with a water outlet 41, the water outlet 41 is higher than the piston 40, and the lower end of a third water pipe 13 is communicated with the inner cavity of the water inlet cylinder 39 below the piston 40; the bottom of abundant absorption district 24 is provided with the uide bushing 43 of vertical setting, uide bushing 43 is two pairs, every is to the uide bushing 43 be located the bracing piece 34 below of one end, bracing piece 34 is connected with support frame 45, the lower extreme of support frame 45 is provided with vertical support column 42, the lower extreme of support column 42 stretches into uide bushing 43 and with uide bushing 43 sliding fit, and be provided with compression spring 44 between the diapire of support column 42 lower extreme and abundant absorption district 24, the bottom of support frame 45 is provided with vertical drive post 46, drive post 46 and piston 40 fixed connection.
When the third water pipe 13 does not output tail water, the piston 40 is slightly lower than the water outlet 41, and the compression spring 44 is in a compressed state. When the third water pipe 13 outputs tail water, the tail water enters the water inlet cylinder 39 below the piston 40, so that the piston 40 is pushed to move upwards, the piston 40 pushes the whole support frame 45, the support rod 34 and the packing column to move upwards through the transmission column 46, the compression spring 44 stretches, and when the packing column moves upwards, the tail water is disturbed, the tail water is promoted to flow up and down, and each layer of tail water can be fully contacted with the packing column, so that the adsorption effect of antibiotics is improved. When the piston 40 moves to be higher than the water outlet 41, the tail water in the water inlet cylinder 39 enters the full adsorption zone 24 through the water outlet 41. Because the water inflow is continuously fluctuated, and the motion inertia exists in the support frame 45, the support rod 34, the filling column and the like, the heights of the piston 40, the support frame 45, the support rod 34 and the filling column are continuously changed, so that the tail water is continuously promoted to be fluctuated up and down, and the tail water is promoted to be uniformly contacted with the filling column.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Mobile aquaculture sewage treatment system, its characterized in that: the device comprises a mobile vehicle body (1), wherein a tank body (2) is arranged on the mobile vehicle body (1), an inner cavity of the tank body (2) is divided into a pre-precipitation zone (3), an anoxic reaction zone (4), an aerobic reaction zone (5) and an antibiotic adsorption zone (6) by a partition plate, a water inlet pipe (7) is arranged on the side wall of the tank body (2), and the water inlet pipe (7) is communicated with the bottom of the pre-precipitation zone (3); the top of the pre-precipitation zone (3) is communicated with the bottom of the anoxic reaction zone (4) through a first water pipe (8), a first filler (9) is arranged in the anoxic reaction zone (4), the top of the anoxic reaction zone (4) is communicated with the bottom of the aerobic reaction zone (5) through a second water pipe (10), a second filler (11) is arranged in the aerobic reaction zone (5), an aeration device (12) is arranged at the bottom of the aerobic reaction zone (5), the top of the aerobic reaction zone (5) is communicated with the bottom of the antibiotic adsorption zone (6) through a third water pipe (13), and an antibiotic adsorption filler is arranged in the antibiotic adsorption zone (6);
the antibiotic adsorption area (6) is divided into a full adsorption area (24), a middle transition area (25) and a water outlet area (26) by two vertical baffle plates (23), and the third water pipe (13) is communicated with the bottom of the full adsorption area (24); the antibiotic adsorption filler comprises a first activated carbon fiber filler (27), a second activated carbon fiber filler (28) and a third activated carbon fiber filler (29), wherein the first activated carbon fiber filler (27), the second activated carbon fiber filler (28) and the third activated carbon fiber filler (29) are respectively arranged in a full adsorption zone (24), a middle transition zone (25) and a water outlet zone (26), and the pore diameters of the first activated carbon fiber filler (27), the second activated carbon fiber filler (28) and the third activated carbon fiber filler (29) are sequentially increased;
the first activated carbon fiber filler (27) comprises a plurality of filler layers, each filler layer comprises a plurality of horizontal filler columns, each filler column comprises a supporting framework (30) and a porous activated carbon fiber layer (31) which are sequentially arranged from inside to outside, a plurality of rough carbon fiber sleeves (32) are nested on the filler column of at least one filler layer, and a burr layer (33) is arranged on the outer wall of each rough carbon fiber sleeve (32).
2. A mobile aquaculture wastewater treatment system according to claim 1 wherein: the pool body (2) is a metal pool body, and a shock absorption layer is arranged between the metal pool body and the movable car body (1).
3. A mobile aquaculture wastewater treatment system according to claim 1 wherein: the utility model discloses a sedimentation device, including pre-sedimentation zone (3), including baffle (15), inlet tube (7), baffle (15), vertical honeycomb duct (14) are provided with in pre-sedimentation zone (3), the internal diameter of honeycomb duct (14) lower extreme is greater than the internal diameter of upper end, the below of honeycomb duct (14) is provided with conical baffle (15), the pointed end of baffle (15) up, inlet tube (7) and honeycomb duct (14) intercommunication.
4. A mobile aquaculture wastewater treatment system according to claim 1 wherein: still include sediment pressure filter (16), the one end of sediment pressure filter (16) is connected with into mud pipe (17) and flushing pipe (18), and the other end is provided with mud mouth (19), the below of mud mouth (19) is provided with horizontally screw conveyer pipe (20), the bottom of sediment pressure filter (16) is provided with drain pipe (21).
5. The mobile aquaculture wastewater treatment system of claim 4 wherein: the bottom of the pre-sedimentation zone (3) is provided with a mud pump (22), and the mud pump (22) is connected with a mud inlet pipe (17) through a pipeline.
6. A mobile aquaculture wastewater treatment system according to claim 1 wherein: a plurality of pairs of horizontal supporting rods (34) are arranged in the full adsorption area (24), a plurality of hanging rings (35) are arranged on the supporting rods (34), hooks (36) are arranged at two ends of each filling column, and the hooks (36) are hung on the hanging rings (35).
7. The mobile aquaculture wastewater treatment system of claim 6 wherein: the side wall of the supporting rod (34) is provided with a sliding groove, a sliding block (37) which is in sliding fit with the sliding groove is arranged in the sliding groove, and the hanging ring (35) is fixedly arranged on the sliding block (37).
8. A mobile aquaculture wastewater treatment system according to claim 1 wherein: the top of the side wall of the pre-precipitation zone (3), the anoxic reaction zone (4) and the aerobic reaction zone (5) is provided with an overflow weir (38), and the upper ends of the first water conveying pipe (8), the second water conveying pipe (10) and the third water conveying pipe (13) are respectively communicated with the overflow weir (38) of the pre-precipitation zone (3), the anoxic reaction zone (4) and the aerobic reaction zone (5).
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