CN218321080U - Pig farm effluent disposal system based on BFR technology - Google Patents
Pig farm effluent disposal system based on BFR technology Download PDFInfo
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Abstract
The utility model discloses a pig farm wastewater treatment system based on BFR technology, which comprises a feces collecting pool, wherein a water outlet of the feces collecting pool is communicated with a solid-liquid separation component, the effluent of the solid-liquid separation component is guided into an anaerobic treatment component, the water outlet of the anaerobic treatment component is communicated with a multi-stage BFR reaction pool, and the water outlet of the BFR reaction pool is communicated with a disinfection effluent component; the utility model discloses think about ingenious, rational in infrastructure, can carry out advanced treatment to pig farm waste water to save area, can also improve out water quality of water, reduce the working costs.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, specific theory relates to a pig farm effluent disposal system based on BFR technology.
Background
With the accelerated development of economy in China and the abundance of living conditions of people, the scale of domestic farms is continuously increased and continuously developed and expanded; the treatment of the aquaculture wastewater is always a key and hot problem of social concern, and the resource utilization is always promoted; in recent years, various modes are adopted in various places to treat and comprehensively utilize the aquaculture wastewater, so that relatively good results are obtained, but the development of the aquaculture wastewater is unbalanced in all places in China, and the problem of serious water pollution still exists in some areas.
The waste water discharged outside the farm is mainly characterized by a large amount of suspended matters, high concentration of organic matters, deep chromaticity, a large amount of bacteria, and high concentration of NH3-N due to the large amount of animal wastes; the solid residues in the wastewater are mainly organic substances, and if effective solid-liquid separation is not carried out, difficulties in different degrees can be brought to subsequent treatment, the treatment load is increased, and the treatment effect is influenced.
At present, the breeding wastewater is generally treated by adopting the process of 'a water collecting tank → solid-liquid separation → a regulating tank → a UASB/IC anaerobic reaction tank → an anaerobic sedimentation tank → A/O → a secondary sedimentation tank → a disinfection tank'.
Because the concentration of ammonia nitrogen in the inlet water of the aquaculture wastewater is 400-700mg/L, the ammonia nitrogen can rise to 1000-1500mg/L after the anaerobic reaction, and the ammonia nitrogen in the outlet water is generally required to be lower than 45mg/L. Therefore, the treatment difficulty of the aquaculture wastewater and the emphasis on the removal of ammonia nitrogen are placed.
The ammonia nitrogen degraded by the traditional process is mainly subjected to nitration reaction in an aerobic tank, and in order to ensure that the ammonia nitrogen in effluent reaches the standard, the aerobic tank usually needs higher activated sludge concentration (MLSS is more than 4000 mg/L) and longer hydraulic retention time (HRT is more than 72 h); higher activated sludge concentration inevitably causes larger sludge production, thereby increasing the later operation cost; in addition, the longer hydraulic retention time inevitably causes larger tank capacity requirement, thereby increasing the capital investment.
SUMMERY OF THE UTILITY MODEL
The to-be-solved main technical problem of the utility model is to provide a pig farm effluent disposal system based on BFR technology, this effluent disposal system compares with other traditional biochemistry and materialization processing systems, has not only saved area, has improved out water quality of water, has reduced the working costs moreover.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a pig farm effluent disposal system based on BFR technology, includes the dirty collecting pit of excrement, the delivery port intercommunication of the dirty collecting pit of excrement has the solid-liquid separation subassembly, the play water conservancy diversion of solid-liquid separation subassembly is to the anaerobic treatment subassembly in, the delivery port intercommunication of anaerobic treatment subassembly has multistage BFR reaction tank, and the delivery port intercommunication of BFR reaction tank has the subassembly of disinfecting out-water.
The following is the utility model discloses to above-mentioned technical scheme's further optimization:
install mixer and liquid level controller in the dirty collection pond of excrement, the mixer is used for stirring excrement sewage, liquid level controller is used for detecting the liquid level in the dirty collection pond of excrement.
Further optimization: the solid-liquid separation assembly comprises a solid-liquid separator and an adjusting tank, and a water outlet of the solid-liquid separator is communicated with a water inlet of the adjusting tank; and a mud pump is arranged between the solid-liquid separator and the feces collection pool, and the mud pump is used for sucking feces water in the feces collection pool and conveying the feces water to the solid-liquid separator.
Further optimization: be close to its four contained angle departments in the equalizing basin and install dive mixer respectively, dive mixer is used for stirring the waste water in the equalizing basin.
And (4) further optimizing: the anaerobic treatment component comprises an anaerobic reactor and an anaerobic sedimentation tank, and a water outlet of the anaerobic reactor is communicated with a water inlet of the anaerobic sedimentation tank; and a lifting pump is arranged between the anaerobic reactor and the regulating tank and used for lifting the sewage in the regulating tank into the anaerobic reactor.
Further optimization: the multistage BFR reaction tanks are arranged in series, a water inlet of the first-stage BFR reaction tank is communicated with a water outlet of the anaerobic sedimentation tank, and water discharged from the anaerobic sedimentation tank sequentially enters the multistage BFR reaction tanks; the water outlet of the last BFR reaction tank is communicated with the water inlet of the disinfection water outlet assembly.
And (4) further optimizing: the BFR reaction tank is internally filled with suspended fillers, the bottom of the BFR reaction tank is provided with an aeration coil, the outside of the BFR reaction tank is provided with an aeration fan, the air outlet of the aeration fan is communicated with the aeration coil, and the aeration coil is provided with a plurality of aeration holes.
And (4) further optimizing: the disinfection water outlet assembly comprises a dissolved air flotation machine and a contact disinfection tank, a water inlet of the dissolved air flotation machine is communicated with a water outlet of the BFR reaction tank, and a water outlet of the dissolved air flotation machine is communicated with a water inlet of the contact disinfection tank.
Further optimization: the dissolved air flotation machine is communicated with a PAC/PAM dosing system through a communicating pipeline, and the contact disinfection tank is communicated with a disinfectant dosing system through a communicating pipeline.
And (4) further optimizing: the sewage treatment system also comprises a sludge concentration tank, wherein a sewage discharge outlet of the dissolved air flotation machine is communicated with a sewage inlet of the sludge concentration tank, and a sewage discharge outlet of the anaerobic sedimentation tank is communicated with a sewage inlet of the sludge concentration tank; one side of the sludge concentration tank is provided with a sludge dehydrator, a sludge pump is arranged in the sludge concentration tank, and a water outlet of the sludge pump is communicated with a water inlet of the sludge dehydrator.
The utility model adopts the technical proposal, the conception is ingenious, the structure is reasonable, the BFR process is adopted in the wastewater treatment system to treat the wastewater of the pig farm, the CODcr and the ammonia nitrogen concentration of the breeding wastewater are high, particularly the ammonia nitrogen treatment difficulty is higher, and higher activated sludge concentration and longer hydraulic retention time are needed; the BFR suspension filler used in the BFR process has a huge specific surface area, can greatly increase the contact area of microorganisms and sewage, and can save the tank capacity by 40-50%; in addition, the BFR process mainly depends on a biological film formed by BFR fillers to degrade pollutants in sewage, so that the sludge concentration in the aerobic tank is very low, the subsequent sludge yield is also very low, and the subsequent operation cost is greatly saved.
The occupied area is small, the biomass concentration in the reactor is high, and the occupied area of BFR under the same load condition is reduced by more than 60 percent compared with the traditional activated sludge.
The operation is simple, the maintenance requirement is low, and the filler has an automatic cleaning effect on an aeration system and a screen in the tank.
The water inlet can be effectively treated under normal operation and forward flushing mode without back flushing.
The operation is stable, the BFR is influenced by the change of load and temperature far less than the activated sludge, and the sludge expansion is not needed to be worried about; when the sewage composition changes or the toxicity is enhanced, the system can still stably run under the condition of load change through the self-regulation function of the biological membrane.
The particle separation rate is high, and the filler can not freely move in normal operation, so that the filler has the effects of intercepting and filtering suspended matters in water.
The treatment efficiency is high, the BFR process can effectively remove CODcr, NH3-N, TP and suspended matters in the sewage within a short retention time, and can realize very low effluent concentration, thereby being very suitable for the application of low concentration and large water quantity.
The one-time investment is low, the installation is convenient, the reactor can be designed into any shape or the whole treatment system is designed into a module, and the transportation and the field installation are convenient.
The process configuration is flexible, and the stages can be flexibly selected for combined configuration according to different water quality requirements of inlet and outlet water.
The oxygen transmission rate is high, because the filling rate is high, the stroke of bubbles in the reactor is lengthened, so that the oxygen transmission rate is greatly improved, when the temperature is 20 ℃ and the dissolved oxygen is 0, the Oxygen Transfer Rate (OTR) in the MBBR reactor is 12.6 g O2/Nm3-m, and the OTR of the BFR is increased to 25.0 g O2/Nm3-m, so that the energy consumption of sewage treatment is greatly reduced.
The present invention will be further described with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of an overall structure in an embodiment of the present invention.
Detailed Description
Example (b): as shown in figure 1, a pig farm effluent disposal system based on BFR technology, includes the dirty collecting pit of excrement, the delivery port intercommunication of the dirty collecting pit of excrement has the solid-liquid separation subassembly, the play water conservancy diversion of solid-liquid separation subassembly is to the anaerobic treatment subassembly in, the delivery port intercommunication of anaerobic treatment subassembly has multistage BFR reaction tank, and the delivery port intercommunication of BFR reaction tank has the disinfection subassembly of going out water.
The design like this, pig manure water in the pig house is collected in the dirty collecting pit of excrement through the pipeline transport, then the excrement sewage in the dirty collecting pit of excrement is sent into the solid-liquid separation subassembly and is carried out mud-water separation, the dry excrement that separates gets off gets into the compost workshop, the moisture of separating carries out anaerobic reaction in getting into the anaerobic treatment subassembly after the buffering, waste water carries out hydrolysis reaction in the anaerobic treatment subassembly, the acidizing reaction, the methane production reaction, a large amount of macromolecule organic matters are decomposed into micromolecule material, most COD in the sewage is got rid of in this unit, and the ammonia nitrogen is behind anaerobic reaction, can obviously rise, even 2-3 times of the concentration of intaking.
And the effluent of the anaerobic treatment component enters a multi-stage BFR reaction tank, enters a disinfection effluent component after passing through the BFR reaction tank, is subjected to mud-water separation again, and is subjected to disinfection treatment to reach the standard and be discharged.
Install mixer and liquid level controller in the dirty collection pond of excrement, be used for stirring excrement sewage through the mixer for excrement is dirty and water homogeneous mixing, is used for detecting the liquid level in the dirty collection pond of excrement through liquid level controller, avoids the overflow.
The solid-liquid separation assembly comprises a solid-liquid separator and an adjusting tank, and a water outlet of the solid-liquid separator is communicated with a water inlet of the adjusting tank.
The solid-liquid separator is used for carrying out mud-water separation on the excrement sewage, the separated dry excrement is conveyed to a composting workshop for subsequent treatment, and the separated wastewater enters the regulating tank to regulate the water quality and the water quantity, so that the wastewater is buffered.
And a mud pump is arranged between the solid-liquid separator and the feces collection pool, a water inlet of the mud pump is communicated with a water outlet of the feces collection pool, and a water outlet of the mud pump is communicated with a water inlet of the solid-liquid separator.
The slurry pump is used for sucking the excrement sewage in the excrement sewage collecting pool, the excrement sewage is pressurized and then conveyed into the solid-liquid separator through the pipeline, and at the moment, the solid-liquid separator performs sludge-water separation on the excrement sewage.
In this embodiment, the mud pump is disposed in the feces collection tank, a water inlet of the mud pump is directly communicated with the feces collection tank, and a water outlet of the mud pump is communicated with a water inlet of the solid-liquid separator through a conveying pipeline.
In this embodiment, the solid-liquid separator generally adopts an inclined screen type solid-liquid separator, solid-liquid separation is performed on a liquid manure mixture discharged from a liquid manure collecting tank through the action of a vibrating screen, separated dry manure enters a manure piling field, and wastewater enters an adjusting tank to adjust the water quality and the water quantity.
The regulating reservoir has the function of regulating water quality and water quantity, and the hydraulic retention time of the wastewater in the regulating reservoir is not less than 1d.
Be close to its four contained angle departments in the equalizing basin and install dive mixer respectively, dive mixer is used for stirring the waste water in the equalizing basin, through this stirring effect for the abundant mixing of pond water yield, quality of water improves the result of use.
The anaerobic treatment component comprises an anaerobic reactor and an anaerobic sedimentation tank, and a water outlet of the anaerobic reactor is communicated with a water inlet of the anaerobic sedimentation tank.
A lift pump is arranged between the anaerobic reactor and the regulating tank, a water inlet of the lift pump is communicated with a water outlet of the regulating tank, and a water outlet of the lift pump is communicated with a water inlet of the anaerobic reactor.
By the design, the lifting pump works to lift the sewage in the regulating reservoir into the anaerobic reactor, at the moment, the wastewater in the anaerobic reactor is subjected to hydrolysis reaction, acidification reaction and methanogenesis reaction in the anaerobic reactor, a large number of macromolecular organic matters are decomposed into micromolecular substances, most COD (chemical oxygen demand) in the sewage is removed in the unit, and ammonia nitrogen can be obviously increased after the anaerobic reaction, even 2-3 times of the inlet water concentration.
The effluent of the anaerobic reactor enters an anaerobic sedimentation tank, and sludge possibly carried by the effluent of the anaerobic reactor is mainly precipitated in the anaerobic sedimentation tank to prevent the sludge from entering a subsequent biochemical system.
The anaerobic reactor adopts a UASB reactor or an IC reactor.
The UASB reactor is the prior art, and the UASB reactor is a flow anaerobic sludge bed reactor; the IC reactor is prior art, and the IC reactor is an anaerobic reactor.
And the air outlet of the UASB reactor is communicated with an external biogas processing system through a communication pipeline.
When the wastewater in the anaerobic reactor reacts in the anaerobic reactor, methane is generated and is guided to a methane treatment system through a communication pipeline.
In this embodiment, the multistage BFR reaction tanks are arranged in series, a water inlet of the first-stage BFR reaction tank is communicated with a water outlet of the anaerobic sedimentation tank, and effluent of the anaerobic sedimentation tank sequentially enters the multistage BFR reaction tanks.
And the water outlet of the last-stage BFR reaction tank is communicated with the water inlet of the disinfection water outlet assembly, and the outlet water of the last-stage BFR reaction tank enters the disinfection water outlet assembly.
In addition to this embodiment, the multistage BFR reaction tanks are arranged in parallel, and the water inlet of each BFR reaction tank is communicated with the water outlet of the anaerobic sedimentation tank, and the effluent of the anaerobic sedimentation tank enters the multistage BFR reaction tanks respectively.
And the water outlet of each BFR reaction tank is communicated with the water inlet of the disinfection water outlet assembly, and the water outlet of each BFR reaction tank enters the disinfection water outlet assembly respectively.
The BFR reaction tank is a BFR high-efficiency biomembrane reaction tank, the BFR reaction tank is filled with suspended fillers, and the fillers are in a fluidized state under the action of aeration and are fully mixed with water because the density of the fillers is close to that of the water, so that microorganisms loaded on the inner surface and the outer surface of the fillers can fully adsorb and degrade organic matters and pollutants in the water, and the purification treatment of the wastewater is realized.
The BFR high-efficiency biomembrane process has the main principle that the filler with the specific gravity close to water is put into an aeration tank to be used as a carrier of microorganisms, and most of the filler in the reactor can not freely move in normal operation due to large filling amount; microorganisms in the biological film are attached to the surface of the filler, and organic pollutants in water are removed through adsorption and biodegradation.
In the BFR high-efficiency biomembrane process, sewage continuously enters a bioreactor, and an intermittent cleaning mode is adopted to remove excessive microorganisms (sludge) and trapped suspended matters (forward flushing and non-back flushing) on the filler.
The packing provides a large field for the growth and propagation of microorganisms (suspended packing porosity is typically 85% to 95%), maximizing the run time between wash cycles.
The BFR high-efficiency biomembrane process is a suspended filler biomembrane process, realizes the separation of hydraulic retention time and sludge retention time, has low concentration of suspended matters in effluent, and can save sludge backflow facilities.
The bottom of the BFR reaction tank is provided with an aeration coil, the outside of the BFR reaction tank is provided with an aeration fan, the air outlet of the aeration fan is communicated with the aeration coil, and the aeration coil is provided with a plurality of aeration holes.
By the design, the aeration fan outputs high-pressure air to be conveyed into the aeration coil pipe, and the aeration coil pipe outputs the high-pressure air through the aeration hole to aerate the BFR reaction tank.
When the reactor is aerated, the air bubbles must pass through a suspended filler layer in the BFR reaction tank, and the path of the air bubbles reaching the surface of the reactor is lengthened due to high filling rate, so that the oxygen transmission efficiency is improved.
And the high packing rate of the suspended filler layer can also play a role of a filter, and the concentration of suspended matters in the effluent of the BFR reactor during normal operation is reduced.
The disinfection water outlet assembly comprises a dissolved air flotation machine and a contact disinfection tank, wherein a water inlet of the dissolved air flotation machine is communicated with a water outlet of the BFR reaction tank, and a water outlet of the dissolved air flotation machine is communicated with a water inlet of the contact disinfection tank.
The dissolved air flotation machine is provided with a medicine inlet which is communicated with a PAC/PAM medicine adding system through a communicating pipeline.
The PAC/PAM dosing system is used for conveying PAC or/and PAM liquid medicine to the dissolved air flotation machine and mixing the PAC or/and PAM liquid medicine with wastewater in the dissolved air flotation machine.
The PAC is the prior art, and the PAC is polyaluminium chloride for sewage treatment.
PAM is prior art, and PAM is flocculating agent for sewage treatment.
The contact disinfection tank is provided with a medicine inlet which is communicated with a disinfectant dosing system through a communicating pipeline.
Disinfectant is stored in the disinfectant dosing system, and the disinfectant dosing system is used for conveying the disinfectant into the contact disinfection tank through the communicating pipeline and the medicine inlet and mixing the disinfectant with wastewater in the contact disinfection tank.
And can disinfect the waste water in the contact disinfection tank through the disinfectant, and ensure that the effluent water reaches the standard.
By the design, the water quality can be ensured through the dissolved air flotation machine and the contact disinfection tank, the BFR reaction tank is subsequently provided with the dissolved air flotation machine and the contact disinfection tank, and the dissolved air flotation machine can be used for carrying out solid-liquid separation on small molecules and residual colloid suspended matters in water.
The outlet water of the dissolved air flotation machine enters a contact disinfection tank, and a disinfectant is added through a disinfectant adding system to achieve the purpose of killing virus and bacteria, and finally the dissolved air flotation machine is discharged after reaching the standard.
The pig farm wastewater treatment system based on the BFR process further comprises a sludge concentration tank, a sewage discharge outlet of the dissolved air floatation machine is communicated with a sewage inlet of the sludge concentration tank, and a sewage discharge outlet of the anaerobic sedimentation tank is communicated with a sewage inlet of the sludge concentration tank.
Scum generated by the dissolved air flotation machine in the flotation process is discharged into a sludge concentration tank, and sludge generated by sedimentation in the anaerobic sedimentation tank is discharged into the sludge concentration tank.
And the water outlet of the sludge concentration tank is communicated with the water inlet of the regulating tank, and supernatant in the sludge concentration tank is conveyed into the regulating tank to be treated continuously.
One side of the sludge concentration tank is provided with a sludge dewatering machine, a sludge pump is arranged in the sludge concentration tank, and a water outlet of the sludge pump is communicated with a water inlet of the sludge dewatering machine.
And supernatant generated by dewatering of the sludge dewatering machine is communicated with a water inlet of the regulating tank through a return pipeline.
The sludge in the sludge concentration tank is conveyed to the sludge dewatering machine by the sludge pump for sludge dewatering treatment after being concentrated, and the supernatant returns to the regulating tank for continuous treatment.
And the sludge cake generated when the sludge dewatering machine carries out sludge dewatering treatment is conveyed to a manure piling yard.
When in use, the pig manure water in the pig house is conveyed into the manure collecting pool through the pipeline to be collected; the mixer in the excrement collection pond stirs excrement sewage, makes the excrement sewage misce bene in the excrement collection pond.
And then the excrement sewage in the excrement sewage collecting pool is lifted by a lifting pump to enter a solid-liquid separator for dry-wet separation, and the separated dry excrement is transported to an excrement piling field.
Waste water that produces after the dry-wet separation gets into the equalizing basin and carries out the regulation of quality of water and water yield, dive mixer in the equalizing basin stirs the waste water in the equalizing basin, through this stirring action for water yield, the abundant mixing of quality of water in the pond improve the result of use.
Waste water in the regulating reservoir is lifted by a lift pump to enter an anaerobic reactor for anaerobic reaction, the waste water is subjected to hydrolysis reaction, acidification reaction and methanogenesis reaction in the anaerobic reactor, a large amount of macromolecular organic matters are decomposed into micromolecular substances, most COD (chemical oxygen demand) in the sewage is removed in the unit, and ammonia nitrogen can be obviously increased after the anaerobic reaction and even is 2-3 times of the inlet water concentration.
Biogas generated by the anaerobic reactor during the anaerobic reaction of the wastewater is guided into the biogas treatment system through the communicating pipeline.
The effluent of the anaerobic reactor enters an anaerobic sedimentation tank, sludge brought out by the effluent of the anaerobic reactor can be subjected to sedimentation separation in the anaerobic sedimentation tank, supernatant in the anaerobic sedimentation tank enters a multi-stage BFR tank, suspended fillers are filled in the BFR reaction tank, the fillers are in a fluidized state under the aeration condition, a biological film on the surface of the fillers decomposes organic pollutants in water through biological adsorption and oxidation, and the wastewater is subjected to purification treatment.
And the effluent of the BFR reaction tank automatically flows into a dissolved air flotation machine, and the PAC/PAM dosing system is used for conveying PAC or PAM liquid medicine into the dissolved air flotation machine and mixing the PAC or PAM liquid medicine with wastewater in the dissolved air flotation machine.
Solid-liquid separation is carried out in a dissolved air flotation machine through dissolved air flotation, suspended state and a part of colloid particles in water are removed, and a part of CODcr and chroma can be removed at the same time.
Dissolve gas air supporting machine play water and get into the contact disinfection pond, disinfectant charge system is used for carrying disinfectant to the contact disinfection pond in to mix with the waste water in the contact disinfection pond, can disinfect, disinfect to waste water through disinfectant this moment, through the disinfection of disinfectant, after the disinfection, the disinfection effect, this waste water finally discharge up to standard.
Scum generated by the dissolved air flotation machine in the flotation process is discharged into a sludge concentration tank, and sludge generated by sedimentation in the anaerobic sedimentation tank is discharged into the sludge concentration tank.
Sludge in the sludge concentration tank is conveyed to a sludge dewatering machine for sludge dewatering treatment by a sludge pump regularly after being concentrated, and supernatant returns to the regulating tank for continuous treatment.
And the sludge cake generated when the sludge dewatering machine carries out sludge dewatering treatment is conveyed to a manure piling field.
For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.
Claims (10)
1. The utility model provides a pig farm effluent disposal system based on BFR technology, includes the dirty collecting pit of excrement, its characterized in that: the water outlet of the fecal sewage collecting tank is communicated with a solid-liquid separation component, the effluent of the solid-liquid separation component is guided to the anaerobic treatment component, the water outlet of the anaerobic treatment component is communicated with a multi-stage BFR reaction tank, and the water outlet of the BFR reaction tank is communicated with a disinfection effluent component.
2. The BFR process-based pig farm wastewater treatment system according to claim 1, wherein: install mixer and liquid level controller in the dirty collection pond of excrement, the mixer is used for stirring excrement sewage, liquid level controller is used for detecting the liquid level in the dirty collection pond of excrement.
3. The BFR process-based pig farm wastewater treatment system according to claim 2, wherein: the solid-liquid separation assembly comprises a solid-liquid separator and an adjusting tank, and a water outlet of the solid-liquid separator is communicated with a water inlet of the adjusting tank; and a mud pump is arranged between the solid-liquid separator and the feces collection pool, and the mud pump is used for sucking feces water in the feces collection pool and conveying the feces water to the solid-liquid separator.
4. The BFR process-based pig farm wastewater treatment system according to claim 3, wherein: be close to its four contained angle departments in the equalizing basin and install dive mixer respectively, dive mixer is used for stirring the waste water in the equalizing basin.
5. The BFR process-based pig farm wastewater treatment system according to claim 4, wherein: the anaerobic treatment component comprises an anaerobic reactor and an anaerobic sedimentation tank, and a water outlet of the anaerobic reactor is communicated with a water inlet of the anaerobic sedimentation tank; and a lifting pump is arranged between the anaerobic reactor and the regulating tank and used for lifting the sewage in the regulating tank into the anaerobic reactor.
6. The BFR process-based pig farm wastewater treatment system according to claim 5, wherein: the multistage BFR reaction tanks are arranged in series, a water inlet of the first-stage BFR reaction tank is communicated with a water outlet of the anaerobic sedimentation tank, and water discharged from the anaerobic sedimentation tank sequentially enters the multistage BFR reaction tanks; the water outlet of the last BFR reaction tank is communicated with the water inlet of the disinfection water outlet assembly.
7. The BFR process-based pig farm wastewater treatment system according to claim 6, wherein: the BFR reaction tank is internally filled with suspended fillers, the bottom of the BFR reaction tank is provided with an aeration coil, the outside of the BFR reaction tank is provided with an aeration fan, the air outlet of the aeration fan is communicated with the aeration coil, and the aeration coil is provided with a plurality of aeration holes.
8. The BFR process-based pig farm wastewater treatment system according to claim 7, wherein: the disinfection water outlet assembly comprises a dissolved air flotation machine and a contact disinfection tank, wherein a water inlet of the dissolved air flotation machine is communicated with a water outlet of the BFR reaction tank, and a water outlet of the dissolved air flotation machine is communicated with a water inlet of the contact disinfection tank.
9. The BFR process-based pig farm wastewater treatment system according to claim 8, wherein: the dissolved air flotation machine is communicated with a PAC/PAM dosing system through a communicating pipeline, and the contact disinfection tank is communicated with a disinfectant dosing system through a communicating pipeline.
10. The BFR process-based pig farm wastewater treatment system according to claim 9, wherein: the sewage treatment system also comprises a sludge concentration tank, wherein a sewage discharge outlet of the dissolved air flotation machine is communicated with a sewage inlet of the sludge concentration tank, and a sewage discharge outlet of the anaerobic sedimentation tank is communicated with a sewage inlet of the sludge concentration tank; one side of the sludge concentration tank is provided with a sludge dewatering machine, a sludge pump is arranged in the sludge concentration tank, and a water outlet of the sludge pump is communicated with a water inlet of the sludge dewatering machine.
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| CN202222895079.1U CN218321080U (en) | 2022-11-01 | 2022-11-01 | Pig farm effluent disposal system based on BFR technology |
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| CN202222895079.1U CN218321080U (en) | 2022-11-01 | 2022-11-01 | Pig farm effluent disposal system based on BFR technology |
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