CN111606502A - Harmless wastewater treatment process and system for livestock and poultry died of diseases - Google Patents
Harmless wastewater treatment process and system for livestock and poultry died of diseases Download PDFInfo
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- CN111606502A CN111606502A CN202010420279.4A CN202010420279A CN111606502A CN 111606502 A CN111606502 A CN 111606502A CN 202010420279 A CN202010420279 A CN 202010420279A CN 111606502 A CN111606502 A CN 111606502A
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C02F3/30—Aerobic and anaerobic processes
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Abstract
The application provides a harmless wastewater treatment process and system for livestock and poultry died of diseases. The treatment process comprises the following treatment steps: performing pretreatment on the wastewater, wherein the pretreatment comprises filtration treatment and pH value treatment; carrying out anaerobic treatment on the wastewater subjected to the pretreatment; and carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment. The application solves the technical problem of low harmless treatment efficiency caused by incomplete treatment in the wastewater treatment process in the related technology, and achieves the purpose of more thorough harmless treatment of wastewater, thereby realizing the technical effect of improving the efficiency of harmless treatment of wastewater.
Description
Technical Field
The invention relates to the technical field of environmental science, in particular to a harmless wastewater treatment process and system for livestock and poultry died of diseases.
Background
The harmless treatment is a scientific treatment method without the cost of environmental pollution, effectively reduces the pollution problem caused by random treatment, and changes waste into valuable. There are three methods for innocent treatment: landfill treatment, incineration treatment and composting treatment.
The dead and diseased animals carry pathogenic bacteria, and need to be treated in a centralized way in a harmless treatment workshop to eliminate the pathogenic bacteria.
The inventors have found that the method for treating harmless wastewater in the related art has at least the following problems: the anaerobic process and the aerobic process for treating the wastewater or the sewage are not thorough in treatment, single in treatment process, high in cost, not suitable for small-volume treatment and the like.
Aiming at the problem of low harmless treatment efficiency caused by single treatment process in the wastewater treatment process in the related art, no effective solution is provided at present.
Disclosure of Invention
The application mainly aims to provide a harmless wastewater treatment process and system for livestock and poultry died of diseases, so as to solve the technical problem of low harmless treatment efficiency caused by incomplete treatment in the wastewater treatment process in the related technology.
In order to achieve the above objects, according to one aspect of the present application, there is provided a harmless wastewater treatment process for livestock and poultry died of illness.
The harmless wastewater treatment process for livestock and poultry died of diseases according to the application comprises the following treatment steps: performing pretreatment on the wastewater, wherein the pretreatment comprises filtration treatment and pH value treatment; carrying out anaerobic treatment on the wastewater subjected to the pretreatment; and carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
Further, the pretreatment of the wastewater comprises the following treatment steps: filtering the wastewater through a grating well to filter suspended matters in the wastewater; enabling the filtered wastewater to flow into an oil separation primary settling tank to remove floating oil in the wastewater; and adjusting the pH value of the wastewater after the floating oil is removed through an adjusting tank.
Further, the step of inputting the wastewater after the pretreatment into an anaerobic reaction tank for anaerobic treatment comprises: and degrading the insoluble high molecular substances in the wastewater under anaerobic bacteria and anaerobic conditions.
Further, the degradation treatment comprises decomposition and conversion, and the anaerobic treatment of the wastewater subjected to the pretreatment comprises the following steps: decomposing the insoluble high molecular substance into soluble small molecular substance; and converting the soluble micromolecular substance under the condition of anaerobic bacteria, and finally releasing the methane.
Further, the aerobic treatment of the wastewater after the pretreatment and the anaerobic treatment comprises: continuously introducing air into the wastewater through an aerator to activate aerobic bacteria in the wastewater; biochemically degrading organic matters in the wastewater and releasing ammonia gas through the aerobic bacteria; and introducing the ammonia gas into a waste gas collecting device through a fan, performing microbial degradation in a biological pool, and discharging.
Further, the step of subjecting the wastewater after the pretreatment and the anaerobic treatment to aerobic treatment and then subjecting the wastewater after the pretreatment to anaerobic treatment comprises: discharging the sludge obtained after aerobic treatment into a sludge tank at regular time through a membrane bioreactor so as to perform sludge concentration and aerobic digestion; and (3) enabling the effluent of the membrane bioreactor to flow into a clean water tank for disinfection.
In order to achieve the above objects, according to another aspect of the present application, there is provided a harmless wastewater treatment system for livestock and poultry died of illness.
According to the application, beasts and birds innocent treatment wastewater system that dies of illness includes: the pretreatment device is used for pretreating wastewater, and the pretreatment comprises filtration treatment and pH value treatment; the anaerobic reaction tank is used for carrying out anaerobic treatment on the wastewater after the pretreatment; and the O-grade biological treatment tank is used for carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
Further, the pretreatment apparatus includes: the grating well is used for filtering the wastewater to filter suspended matters in the wastewater; the oil removal primary sedimentation tank is used for removing floating oil in the filtered wastewater; and the adjusting tank is used for adjusting the pH value of the wastewater after the floating oil is removed.
Further, the apparatus further comprises: the A-level biological treatment tank is used for converting insoluble organic matters in the wastewater into soluble organic matters and hydrolyzing macromolecular organic matters into micromolecular organic matters based on facultative microorganisms; and the precipitation filtering tank is used for performing precipitation filtering on a product obtained after the microbial degradation is performed in the O-level biological tank.
Further, the apparatus further comprises: the membrane bioreactor is used for discharging the discharged sludge into a sludge tank at regular time so as to perform sludge concentration and aerobic digestion; and the clean water tank is used for enabling the effluent of the membrane bioreactor to flow into the clean water tank for disinfection.
In the embodiment of the application, the wastewater is pretreated, and the pretreatment comprises filtration treatment and pH value treatment; the mode of carrying out anaerobic treatment on the wastewater after the pretreatment is that the wastewater after the pretreatment and the anaerobic treatment is subjected to aerobic treatment, so that the aim of more thoroughly treating the wastewater without harm is fulfilled, the technical effect of improving the efficiency of treating the wastewater without harm is realized, and the technical problem of low efficiency of treating the wastewater without thorough treatment in the wastewater treatment process in the related technology is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a first embodiment of the present application;
FIG. 2 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a second embodiment of the present application;
FIG. 3 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a third embodiment of the present application;
FIG. 4 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a fourth embodiment of the present application;
FIG. 5 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a fifth embodiment of the present application;
FIG. 6 is a schematic flow chart of a harmless wastewater treatment process for livestock and poultry died of illness according to a sixth embodiment of the present application;
FIG. 7 is a schematic structural diagram of the harmless wastewater treatment system for livestock and poultry died of illness according to the first embodiment of the present application; and
FIG. 8 is a schematic structural diagram of a harmless wastewater treatment system for livestock and poultry died of illness according to a second embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or means is not necessarily limited to those steps or means expressly listed, but may include other steps or apparatus not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
According to the embodiment of the application, a harmless wastewater treatment process for livestock and poultry died of diseases is provided, as shown in fig. 1, the treatment process comprises the following steps S101 to S104:
step S101, performing pretreatment on the wastewater, wherein the pretreatment comprises filtration treatment and pH value treatment.
During specific implementation, can carry out innocent treatment to waste water at the sewage treatment station, innocent treatment at first needs to carry out the preliminary treatment to waste water, including preliminary filtration and regulation pH value processing etc to preliminary filtration falls discarded object such as the suspended solid in the waste water, and makes the pH value of waste water be in reasonable safe within range through the pH value of adjusting waste water.
And S102, carrying out anaerobic treatment on the pretreated wastewater.
In specific implementation, the wastewater obtained after the pretreatment is subjected to anaerobic treatment, such as degradation treatment and the like, and the step mainly comprises the step of degrading insoluble high molecular substances in the wastewater under anaerobic bacteria and anaerobic conditions.
And S103, carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
In specific implementation, after pretreatment and anaerobic treatment, aerobic treatment is required to be further performed, wherein the aerobic treatment can be aeration treatment, the step mainly degrades organic matters in the wastewater under the condition of aerobic bacteria, and natural fermentation can be realized without adjusting the carbon-nitrogen ratio.
As a preferred embodiment of the present application, as shown in fig. 2, the pretreatment of wastewater includes the following steps S201 to S203:
step S201, filtering the wastewater through a grid well to filter suspended matters in the wastewater.
In specific implementation, the filtering treatment in the pretreatment step is mainly primary filtering through a grating well, and then filtering out wastes such as suspended matters in the wastewater.
And S202, enabling the filtered wastewater to flow into an oil separation primary settling tank to remove floating oil in the wastewater.
During specific implementation, after suspended matters in the wastewater are filtered, the wastewater is treated by removing floating oil through the oil separation primary settling tank.
And S203, adjusting the pH value of the wastewater after the floating oil is removed through an adjusting tank.
During specific implementation, after the wastewater is filtered and the floating oil is removed, the pH value of the wastewater is adjusted through the adjusting tank so as to ensure that the pH value of the wastewater is in a reasonable and safe range.
As a preferred implementation manner of the embodiment of the present application, the inputting the wastewater after the pretreatment into an anaerobic reaction tank for anaerobic treatment includes the following steps S1021:
and step S1021, degrading the insoluble high molecular substance in the wastewater under anaerobic bacteria and anaerobic conditions.
In specific implementation, the anaerobic treatment is preferably performed under anaerobic bacteria and anaerobic conditions to degrade insoluble high molecular substances in the wastewater.
As a preferred embodiment of the present embodiment, as shown in fig. 3, the degradation treatment includes decomposition and conversion, and the anaerobic treatment of the wastewater after the pretreatment includes the following treatment steps S301 to S302:
in step S301, the insoluble high molecular substance is decomposed into soluble small molecular substances.
In specific implementation, the degradation treatment step is divided into two processes of decomposition and conversion, and firstly, the pretreated wastewater needs to be input into an anaerobic reaction tank to decompose insoluble high molecular substances in the wastewater into soluble small molecular substances.
Step S302, the soluble micromolecule substances are converted under the anaerobic condition, and finally methane is released.
In specific implementation, after insoluble high molecular substances in the wastewater are decomposed into soluble small molecular substances, the soluble small molecular substances are further converted under the condition of anaerobic bacteria, and methane is released.
As a preferred embodiment of the present embodiment, as shown in fig. 4, the aerobic treatment of the wastewater after the pretreatment and the anaerobic treatment comprises the following treatment steps S401 to S403:
and S401, continuously introducing air into the wastewater through an aerator to activate aerobic bacteria in the wastewater.
In a specific implementation, the aerobic treatment may include an aeration treatment step, which is to continuously introduce air into the wastewater through an aerator to activate aerobic bacteria in the wastewater, so as to provide degradation conditions for the subsequent degradation of organic matters in the wastewater.
And S402, biochemically degrading organic matters in the wastewater and releasing ammonia gas through the aerobic bacteria.
In specific implementation, after activating aerobic bacteria in the wastewater, organic matters in the wastewater are degraded biochemically under the catalysis of the aerobic bacteria, and finally ammonia gas is released.
And S403, introducing the ammonia gas into a waste gas collecting device through a fan, performing microbial degradation in a biological pool, and discharging.
Specifically, the ammonia gas released after the aerobic treatment needs to be further subjected to harmless treatment and then released, specifically, the ammonia gas is introduced into a waste gas collecting device through a fan, and is subjected to microbial degradation in a biological tank in the waste gas collecting device and then discharged. Preferably, the product obtained after the microbial degradation in the biological tank is precipitated and filtered by a precipitation filter tank, treated by an MBR membrane bioreactor and flows into a clean water tank, and finally chlorine dioxide is added into the clean water tank for disinfection and then is discharged.
As a preferred embodiment of the present application, the anaerobic treatment of the pretreated wastewater comprises the following steps S1022:
and step S1022, inputting the pretreated wastewater into an anaerobic reaction tank and isolating flowing air to perform anaerobic treatment.
In specific implementation, the anaerobic treatment step is preferably carried out under the condition of isolating flowing air, so that the influence of the flowing air on the anaerobic treatment efficiency is avoided.
As a preferred embodiment of the present application, the step of performing aerobic treatment on the wastewater after the pretreatment and the anaerobic treatment comprises the following steps S1041:
and S1041, replacing the waste gas generated by the anaerobic treatment and the aerobic treatment with cold air by a fan.
During specific implementation, when the waste gas generated by the anaerobic treatment and the aerobic treatment is subjected to degradation treatment and discharged, preferably, external fresh cold air is introduced into the waste gas collecting device through the fan to be replaced with the waste gas subjected to degradation treatment, so that the treated waste gas is discharged in time.
As a preferred embodiment of the present embodiment, as shown in fig. 5, the treatment method comprises the following steps S501 to S502 after the wastewater after the pretreatment is aerobically treated and then the wastewater after the anaerobic treatment is anaerobically treated:
and S501, discharging the sludge obtained after the aerobic treatment into a sludge tank at regular time through a membrane bioreactor to perform sludge concentration and aerobic digestion.
The membrane treatment method is the core of the membrane bioreactor combined process. The membrane technology is applied in the wastewater treatment, can effectively purify the wastewater and recover some useful substances, and has the characteristics of energy conservation, no phase change, simple equipment, convenient operation and the like. The membrane separation process is a novel water treatment reactor system, namely a Membrane Bioreactor (MBR), which combines a high-efficiency membrane separation technology and a traditional activated sludge process, wherein a selective permeable membrane is used as a separation medium, certain power is applied to two sides, and components on the raw material side selectively permeate the membrane, so that the aim of separating substances is fulfilled. The flat membrane ultrafiltration is adopted to treat the sewage and the wastewater, the effluent quality can reach the national water quality standard of domestic miscellaneous water, and the treatment method has the advantages of small occupied area, simple operation, stable effluent quality and the like. The flat ultrafiltration membrane has good removal effect on suspended matters and macromolecular organic matters in the wastewater, and has good interception effect on pretreatment which is difficult to pass through flocculation and filtration. And discharging sludge discharged by the MBR into a sludge tank at regular time, performing sludge concentration and aerobic digestion, refluxing sludge supernatant, discharging into a regulating tank for retreatment, and sucking and transporting excess sludge at regular intervals (two to three times per year). Preferably, the MBR membrane tank is designed into a steel-structured box body, and a sludge digestion system is arranged in the MBR membrane tank.
And S502, flowing the effluent of the membrane bioreactor into a clean water tank for disinfection.
The clean water basin in this application embodiment is the disinfection pond, and this pond establishes degassing unit according to the disinfection pond design in, guide plate for go out the effluent outflow with membrane bioreactor and flow into the disinfection pond and disinfect.
Preferably, fig. 6 is a process flow of harmless wastewater treatment for livestock and poultry died of illness according to the embodiment of the application, and the specific treatment flow is as described above and is not described herein again.
From the above description, it can be seen that the present invention achieves the following technical effects: the method comprises the steps of pretreating the wastewater, wherein the pretreatment comprises filtering treatment and pH value treatment; the mode of carrying out anaerobic treatment on the wastewater after the pretreatment is that the wastewater after the pretreatment and the anaerobic treatment is subjected to aerobic treatment, the purpose of more thorough harmless treatment of the wastewater is achieved, the technical problem of low harmless treatment efficiency caused by incomplete treatment in a wastewater treatment process in the related art is solved, and the technical effect of improving the efficiency of harmless treatment of the wastewater is realized.
It should be noted that while a logical order is shown in the process flow diagrams, in some cases, the steps shown or described may be performed in an order different than presented herein.
According to an embodiment of the present application, there is also provided a system for implementing the above harmless wastewater treatment process for livestock and poultry died of illness, as shown in fig. 7, the system comprising: a pretreatment device 1, an anaerobic reaction tank 2 and an O-grade biological treatment tank 3.
The pretreatment device 1 of the embodiment of the application is used for pretreating wastewater, and the pretreatment comprises filtration treatment and pH value treatment.
During specific implementation, can carry out innocent treatment to waste water at the sewage treatment station, innocent treatment at first needs to carry out the preliminary treatment to waste water, including preliminary filtration and regulation pH value processing etc to preliminary filtration falls discarded object such as the suspended solid in the waste water, and makes the pH value of waste water be in reasonable safe within range through the pH value of adjusting waste water.
The anaerobic reaction tank 2 of the embodiment of the application is used for carrying out anaerobic treatment on the wastewater after the pretreatment.
In specific implementation, the wastewater obtained after the pretreatment is subjected to anaerobic treatment, such as degradation treatment and the like, and the step mainly comprises the step of degrading insoluble high molecular substances in the wastewater under anaerobic bacteria and anaerobic conditions. Preferably, the anaerobic reaction tank adopts an ABR anaerobic reaction tank, and the ABR anaerobic reaction tank has a plurality of advantages compared with other anaerobic biological treatment processes due to the special structure, and the ABR anaerobic reaction tank enables the flow states of water flows in different compartments to be in a completely mixed state due to the blocking and separating effects of the upper baffle plate and the lower baffle plate, and is in a push flow state in the whole flow direction of the reaction tank. In the angle of reaction kinetics, the composite flow state of the complete mixing and the plug flow is very favorable for ensuring the volume utilization rate of the reactor, improving the treatment effect and promoting the stability of operation, and is an excellent flow state form. At the same time, under a certain processing capacity, the volume of the reaction tank required by the composite flow state is much lower than that of a single completely mixed reaction tank.
Preferably, the excess sludge generated by the ABR anaerobic reaction tank flows into a sludge concentration tank for treatment, the obtained supernatant is circulated into an adjusting tank in the pretreatment device, the product obtained after the treatment of the sludge concentration tank is introduced into a sludge dewatering machine for treatment through a screw pump, the obtained filtrate is circulated into the adjusting tank in the pretreatment device, and other products obtained after the treatment of the sludge dewatering machine are transported out through a mud cake transporting device.
The O-grade biological treatment tank 3 of the embodiment of the application is used for carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
In specific implementation, after pretreatment and anaerobic treatment, aerobic treatment is required to be further performed, wherein the aerobic treatment can be aeration treatment, the step mainly degrades organic matters in the wastewater under the condition of aerobic bacteria, and natural fermentation can be realized without adjusting the carbon-nitrogen ratio.
Preferably, the O-level biological treatment tank (biological contact oxidation tank) is a core part of the wastewater treatment device, and is divided into two sections, wherein the former section removes various organic substances in the wastewater under the action of biochemical degradation and adsorption under the joint participation of a large number of microbial communities of different species attached to the filler under a high organic load, so that the content of organic substances in the wastewater is greatly reduced. Under the condition of lower organic load, the rear section degrades ammonia nitrogen in the sewage under the condition of sufficient oxygen content through the action of nitrobacteria, and simultaneously reduces the COD value in the sewage to a lower level, so that the sewage is purified. The tank consists of a tank body, a filler, a water distribution device, an oxygenation aeration system and the like. The tank is mainly based on a biomembrane method and has the characteristic of an activated sludge method. The elastic three-dimensional combined filler is adopted as the filler in the pool, and the filler has the advantages of large specific surface area, long service life, easy film hanging, corrosion resistance, no agglomeration and blockage. The filler freely stretches in water, multi-level cutting is made to aquatic bubble, has more increased the aeration effect relatively, and the filler becomes cage installation, and it is convenient to dismantle, overhaul. The pool is divided into two stages, so that the water quality is degraded into gradient, a good treatment effect is achieved, and meanwhile, corresponding diversion turbulence measures are designed and adopted, so that the overall design is more reasonable. The aeration pipeline in the tank is made of high-quality ABS (acrylonitrile butadiene styrene) pipe and is corrosion-resistant. The aeration head adopts the micropore aeration head, is not blocked and has high oxygen utilization rate. Preferably, the tank is designed as a steel-structured tank.
As a preferred embodiment of the present embodiment, as shown in fig. 8, the pretreatment apparatus 1 includes: a grid well 11, an oil separation primary settling tank 12 and an adjusting tank 13.
The grid well 11 of this application embodiment is used for with waste water filters to filter suspended solid in the waste water.
In specific implementation, the filtering treatment in the pretreatment step is mainly primary filtering through a grating well, and then filtering out wastes such as suspended matters in the wastewater. A grid well is arranged before sewage enters the regulating tank and is used for removing soft entanglement, larger solid particle sundries and floating objects in the sewage, so that the service life of a subsequent working water pump is protected, and the system processing workload is reduced. The grid well is preferably set to be a brick concrete structure, and the grid is in a manual frame type.
The oil removal primary settling tank 12 of the embodiment of the application is used for removing floating oil in the filtered wastewater.
During specific implementation, after suspended matters in the wastewater are filtered, the wastewater is treated by removing floating oil through the oil separation primary settling tank. The oil separation primary settling tank is also called as an oil-water separator, and is used for separating oil in water from sewage to reduce the pressure of subsequent treatment. Preferably, the oil separation tank is designed as a stainless steel structure.
The adjusting tank 13 of the embodiment of the application is used for adjusting the pH value of the wastewater after the floating oil is removed.
During specific implementation, after the wastewater is filtered and the floating oil is removed, the pH value of the wastewater is adjusted through the adjusting tank so as to ensure that the pH value of the wastewater is in a reasonable and safe range. Specifically, the sewage enters the regulating tank for regulating and homogenizing the water quantity and the water quality after being treated by the grid well, so that the balance and the stability of the water quantity and the water quality of a subsequent biochemical treatment system are ensured, organic matters in the sewage play a certain degradation effect, and the impact resistance and the treatment effect of the whole system are improved. Preferably, the conditioning tank is designed as concrete.
Preferably, the innoxious effluent treatment plant of beasts and birds that die of illness still includes: the adjusting tank is provided with 2 submersible sewage pumps, and sewage is lifted to the post-treatment after being homogenized. The regulating tank is internally provided with a liquid level controller, signals are transmitted by the liquid level controller and are lifted into the air flotation machine by a lift pump, and sewage after the dosing reaction enters a mixing area of air flotation and is in mixed contact with released dissolved air water, so that a flocculating constituent is adhered to fine micro bubbles and then enters the air flotation area. The flocculating constituent floats to the water surface under the action of air floatation force to form floating slag, after the clean water at the lower layer flows to a clean water pool through a water collector, a part of the clean water flows back to be used as dissolved air, and the residual clean water flows out through an overflow port; after scum on the water surface of the air floatation tank is accumulated to a certain thickness, the scum is scraped into a sludge tank of the air floatation machine by a scum scraper and then is discharged; and the sewage flows into the A-level biological contact oxidation pond from the clean water pond.
Preferably, the innoxious effluent treatment plant of beasts and birds that die of illness still includes: the air flotation device is mainly used for removing light flotation flocs which are difficult to precipitate in water, flocculated colloidal substance oil substances and the like, wastewater obtained after the adjustment of the adjusting tank is treated under the conditions of introducing air and adding medicine, treated products flow into the heating tank to be heated, and then anaerobic and aerobic treatment processes are carried out.
As a preferred implementation of the embodiment of the present application, the apparatus further includes: an A-level biological treatment tank and a sedimentation filter tank.
The A-level biological treatment tank provided by the embodiment of the application is used for converting insoluble organic matters in wastewater into soluble organic matters and hydrolyzing macromolecular organic matters into micromolecular organic matters based on facultative microorganisms.
During specific implementation, an A-level biological treatment pool (also called an anoxic pool) is used for further mixing sewage, high-efficiency biological elastic filler in the pool is fully utilized as a bacteria carrier, indissolvable organic matters in the sewage are converted into soluble organic matters by facultative microorganisms, macromolecular organic matters are hydrolyzed into micromolecular organic matters, further oxidative decomposition of a subsequent O-level biological treatment pool is facilitated, and partial nitrification and denitrification can be performed under the action of nitrobacteria through refluxing nitrocarbon nitrogen to remove ammonia nitrogen. The high-efficiency biological elastic filler is arranged in the biological oxidation pond, has a hydrolysis acidification function and can be adjusted to form an O-grade biological oxidation pond so as to increase the biochemical retention time and improve the treatment efficiency. Preferably, the tank is designed as a box of carbon steel construction.
The sedimentation and filtration tank provided by the embodiment of the application is used for carrying out sedimentation and filtration on a product obtained after the O-level biological tank is subjected to microbial degradation.
As a preferred implementation of the embodiment of the present application, the apparatus further includes: a membrane bioreactor and a clean water tank. The membrane bioreactor of the embodiment of the application is used for discharging sludge into a sludge tank at regular time so as to perform sludge concentration and aerobic digestion. The clean water tank provided by the embodiment of the application is used for enabling the outlet water of the membrane bioreactor to flow into the clean water tank for disinfection.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A harmless wastewater treatment process for livestock and poultry died of diseases is characterized by comprising the following treatment steps:
performing pretreatment on the wastewater, wherein the pretreatment comprises filtration treatment and pH value treatment;
carrying out anaerobic treatment on the wastewater subjected to the pretreatment;
and carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
2. The harmless wastewater treatment process for livestock and poultry died of diseases as claimed in claim 1, wherein the pretreatment of wastewater comprises the following treatment steps:
filtering the wastewater through a grating well to filter suspended matters in the wastewater;
enabling the filtered wastewater to flow into an oil separation primary settling tank to remove floating oil in the wastewater;
and adjusting the pH value of the wastewater after the floating oil is removed through an adjusting tank.
3. The harmless wastewater treatment process for livestock and poultry died of diseases as claimed in claim 1, wherein the step of inputting the wastewater after the pretreatment into an anaerobic reaction tank for anaerobic treatment comprises the following steps:
and degrading the insoluble high molecular substances in the wastewater under anaerobic bacteria and anaerobic conditions.
4. The harmless wastewater treatment process for livestock and poultry died of illness according to claim 1, wherein the degradation treatment comprises decomposition and conversion, and the inputting of the wastewater after the pretreatment into an anaerobic reaction tank for anaerobic treatment comprises:
decomposing the insoluble high molecular substance into soluble small molecular substance;
and converting the soluble micromolecular substance under the condition of anaerobic bacteria, and finally releasing the methane.
5. The harmless wastewater treatment process for livestock and poultry died of diseases as claimed in claim 1, wherein said subjecting the wastewater after said pretreatment and said anaerobic treatment to aerobic treatment comprises:
continuously introducing air into the wastewater through an aerator to activate aerobic bacteria in the wastewater;
biochemically degrading organic matters in the wastewater and releasing ammonia gas through the aerobic bacteria;
and introducing the ammonia gas into a waste gas collecting device through a fan, performing microbial degradation in a biological pool, and discharging.
6. The harmless wastewater treatment process for livestock and poultry died of diseases as claimed in claim 1, wherein said aerobic treatment of wastewater after said pretreatment and said anaerobic treatment comprises:
discharging the sludge obtained after aerobic treatment into a sludge tank at regular time through a membrane bioreactor so as to perform sludge concentration and aerobic digestion;
and (3) enabling the effluent of the membrane bioreactor to flow into a clean water tank for disinfection.
7. The utility model provides a beasts and birds innocent treatment wastewater system dies of illness which characterized in that includes:
the pretreatment device is used for pretreating wastewater, and the pretreatment comprises filtration treatment and pH value treatment;
the anaerobic reaction tank is used for carrying out anaerobic treatment on the wastewater after the pretreatment;
and the O-grade biological treatment tank is used for carrying out aerobic treatment on the wastewater subjected to the pretreatment and the anaerobic treatment.
8. The harmless wastewater treatment system for livestock and poultry died of illness according to claim 7, wherein the pretreatment device comprises:
the grating well is used for filtering the wastewater to filter suspended matters in the wastewater;
the oil removal primary sedimentation tank is used for removing floating oil in the filtered wastewater;
and the adjusting tank is used for adjusting the pH value of the wastewater after the floating oil is removed.
9. The harmless wastewater treatment system for livestock and poultry died of illness according to claim 7, characterized by further comprising:
the A-level biological treatment tank is used for converting insoluble organic matters in the wastewater into soluble organic matters and hydrolyzing macromolecular organic matters into micromolecular organic matters based on facultative microorganisms;
and the precipitation filtering tank is used for performing precipitation filtering on a product obtained after the microbial degradation is performed in the O-level biological tank.
10. The harmless wastewater treatment system for livestock and poultry died of illness according to claim 7, characterized by further comprising:
the membrane bioreactor is used for discharging the discharged sludge into a sludge tank at regular time so as to perform sludge concentration and aerobic digestion;
and the clean water tank is used for enabling the effluent of the membrane bioreactor to flow into the clean water tank for disinfection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010420279.4A CN111606502A (en) | 2020-05-18 | 2020-05-18 | Harmless wastewater treatment process and system for livestock and poultry died of diseases |
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| CN202010420279.4A CN111606502A (en) | 2020-05-18 | 2020-05-18 | Harmless wastewater treatment process and system for livestock and poultry died of diseases |
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