CN111170558A - Pig farm sewage treatment process - Google Patents
Pig farm sewage treatment process Download PDFInfo
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- CN111170558A CN111170558A CN202010008971.6A CN202010008971A CN111170558A CN 111170558 A CN111170558 A CN 111170558A CN 202010008971 A CN202010008971 A CN 202010008971A CN 111170558 A CN111170558 A CN 111170558A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a pig farm sewage treatment process, which comprises the following steps: pig house is through artifical clearance pig manure to long-pending excrement pond in, and the desilting pond carries out the deposit to the sewage that the pig house washed, and the equalizing basin is discharged to sedimentary sewage, the equalizing basin is adjusted inside sewage, and the balanced quality of water of regulating ponding enters into the air supporting machine, the air supporting machine carries out solid-liquid separation to the sewage after adjusting, and decomposes the organic matter that the part is difficult to the degradation, and the sewage of separation enters into the anaerobic tank, the sedimentation tank carries out the sedimentation separation muddy water to sewage, and enters into the oxidation pond through the intermediate tank, the oxidation pond provides the oxygen source to sewage through biological treatment device. The process of the invention meets the modern water treatment technology, can also assist the development of biogas biological energy, reduce the consumption of resources, improve the regional environmental conditions, ensure that the sewage reaches the discharge regulation standard regulated by the state, and reduce the pollution to the environment.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process for a pig farm.
Background
With the development of the breeding industry in China, a pig farm brings income to pig farmers and also brings burden to the living environment of the pig farmers, the sewage discharged by the pig farm threatens the living environment at any time, the sewage mainly comprises pig urine, partial pig manure and pig farm flushing water, the sewage in the pig farm contains a large amount of pollutants such as high-concentration organic matters, suspended matters, ammonia nitrogen and the like, and the water quality and the water quantity of the sewage are greatly influenced by the production process season and product factors, so a process with strong impact load resistance needs to be selected.
The pig farm waste water treatment method can be simply summarized as a physical treatment method, a physicochemical treatment method, a chemical treatment method and a biological treatment method, and the most widely applied method is the biological treatment method, namely, organic matters in the waste water are converted into new microbial cells and simple inorganic matters mainly through the life process of microbes, so that the aim of removing the organic matters is fulfilled.
The mature and reliable treatment process in China is referred, the sewage treatment project of the project is considered to be well done, the technical advancement, the economic benefit and the environmental ecology are required to be reflected, the low operation cost is considered, the situation that the raising cost is increased due to the overhigh operation cost after the project is built is avoided, and the overall benefit of the pig farm is reduced.
Therefore, the invention improves the treatment process of the sewage generated by the pig farm to improve the treatment effect of the sewage.
Disclosure of Invention
The invention aims to provide a pig farm sewage treatment process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a pig farm sewage treatment process comprises the following steps:
the method comprises the following steps: manually cleaning pig manure in a pig house to a manure collecting pool, depositing sewage flushed by the pig house in a sand depositing pool, and discharging the deposited sewage into an adjusting pool;
step two: the adjusting tank adjusts the sewage inside, adjusts the water quantity and balances the water quality, and the water enters the air floatation machine;
step three: the air flotation machine is used for carrying out solid-liquid separation on the adjusted sewage, and decomposing part of organic matters which are difficult to degrade, and the separated sewage enters an anaerobic tank;
step four: the anaerobic tank decomposes and degrades organic matters in the sewage by using anaerobic bacteria and enters the sedimentation tank;
step five: the sedimentation tank is used for carrying out sedimentation separation on the sewage to separate mud and water, and the mud and water enter the oxidation tank through the intermediate tank;
step six: the oxidation pond provides an oxygen source for the sewage through the biological treatment device, organic matters in the sewage are adsorbed and degraded by microorganisms, and the purified water enters the filtering mechanism;
step seven: the filtering mechanism filters water through the filtering device, and the filtered water is discharged into the disinfection tank for disinfection and discharge.
Further, the disinfection tank is in contact disinfection and is disinfected by an ultraviolet disinfector, and the contact time is 1 hour.
Furthermore, the regulating reservoir is designed to have hydraulic retention time of 10 hours and effective volume of 50 cubic meters, adopts a reinforced concrete structure, and is internally provided with two submersible sewage pumps which are used for one purpose and one spare.
Furthermore, the oxidation tank can oxidize sewage for 6-7 hours, and elastic filler with high specific surface area is arranged in the oxidation tank, the filling rate is 70%, and the specific surface area is nearly 600 square meters per m3。
Furthermore, the filtering mechanism is composed of a quartz sand filtering mechanism and an activated carbon adsorber, and the quartz sand filtering mechanism and the activated carbon adsorber respectively contain a quartz sand filtering material and coconut shell activated carbon inside.
Furthermore, the sedimentation tank adopts a vertical flow type, the total retention time is 3 hours, and the intermediate tank is a tooth-shaped water collecting tank with adjustable liquid level.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the process treatment method has mature process, simple flow and convenient management, and the whole sewage treatment station can be arranged underground except the filtering mechanism and the equipment operating room, and can be used for earthing and planting the lawn, so that the process not only reduces the extra occupied area, but also avoids the condition of being influenced by the exposed equipment, and ensures the surface greening operation;
(2) according to the process, the pig manure compost is collected, so that the effect of separating the pig manure from liquid manure is realized, the harm to the environment caused by secondary pollution of the pig manure is effectively avoided, the overall indirect economic benefit is huge, good trace elements are provided for soil remediation in China, and the later-stage operation space of the biological organic fertilizer is increased;
(3) by adopting the optimized and combined anaerobic biological treatment technology, the method meets the modern water treatment technology, can assist the development of biogas biological energy, reduces the resource consumption, improves the regional environment condition, ensures that the sewage reaches the national discharge regulation standard, and reduces the pollution to the environment.
Drawings
FIG. 1 is a schematic view of the treatment process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, an embodiment of the present invention: a pig farm sewage treatment process integrally comprises the following steps:
the method comprises the following steps: pig house is through artifical clearance pig manure to long-pending excrement pond in, guarantees that the pig manure in the pig house is collected through long-pending manure pit, and the staff washes the pig house of clearance back pig manure through the clear water, generates sewage, and the desilting pond carries out the deposit to the sewage that the pig house washed, sedimentary sewage is discharged into the equalizing basin.
Step two: the equalizing basin stirs through supporting mixer structure and adjusts inside sewage, because sewage treatment device is according to 24 hours moving, and the water yield is not produced according to the average value, and the time is big or small, so will set up the equalizing basin and be used for adjusting the water yield that produces in one day, the equalizing basin mainly mixes, the quality of water that all neutralizes, control temperature and pH value, the regulating ponding, the balanced quality of water of regulating ponding enters into the air supporting machine through the elevator pump, and the elevator pump is used one by one and is equipped with.
Step three: the air flotation machine enables air to be attached to suspended particles in a highly dispersed micro-bubble mode to enable the air to be in a state that the density is smaller than that of water, the air is enabled to float on the water surface by utilizing the buoyancy principle, solid-liquid separation is achieved, partial organic matters which are difficult to degrade are decomposed, and separated sewage enters the anaerobic tank.
Step four: the anaerobic tank decomposes and degrades organic matters in the sewage by using anaerobic bacteria, the denitrifying bacteria in the tank reduce nitrate radical which flows in through internal circulation and backflow in the aerobic tank into N by using carbon-containing organic matters which are not decomposed in the sewage as carbon sources2And releasing, wherein the sewage enters a sedimentation tank, and the biogas generated by the anaerobic tank is externally connected with external equipment through a pipeline for recycling.
Step five: the sedimentation tank is used for carrying out sedimentation separation on sewage to obtain mud water, the mud water enters the oxidation tank through the intermediate tank and the lifting pump, the settled excrement residues and the sludge are discharged into the excrement collecting tank through the sewage submersible pump, and the lifting pump and the sewage submersible pump are used for one purpose.
Step six: the oxidation pond provides the oxygen source through biological treatment device to sewage, and organic matter in the sewage is adsorbed, is degraded by the microorganism, and the water after the purification enters into filter equipment through the elevator pump, and the elevator pump is used one by one and is equipped with.
Step seven: filtering mechanism filters water through filter equipment, discharges into the disinfection pond after filtering and disinfects and discharges, need notice before discharging, need detect quality of water through corresponding detection device, judge whether quality of water reaches the environmental protection standard.
Further, the disinfection tank is in contact disinfection, disinfection is carried out through an ultraviolet disinfector, the contact time is 1 hour, ultraviolet rays are mainly used for damaging microorganisms (pathogens such as bacteria, viruses and spores) through high-intensity radiation and destroying the function of nucleic acid so that the microorganisms are killed, the action of the ultraviolet rays on the nucleic acid can cause the breakage of bonds and chains, inter-strand cross-linking, the formation of photochemical products and the like, so that the biological activity of DNA is changed, the microorganisms cannot be replicated, the ultraviolet ray damage is also lethal damage, various bacteria, viruses, parasites, algae and other pathogens in water are directly killed, the disinfection purpose is achieved, the radiation dose received by the microorganisms is determined, and the common radiation time is only a few seconds; the bacteria killing rate can reach 100 percent.
Furthermore, the regulating reservoir is designed to have hydraulic retention time of 10 hours and effective volume of 50m3Adopting a reinforced concrete structure; two WQ10-8-0.75 type submersible sewage pumps are arranged in the pool, and one pump is used and one equipment is used.
Further, the oxidation time of the oxidation pond to the sewage is 6-7 hours, the interior of the oxidation pond is provided with the elastic filler with high specific surface area, the filling rate is 70 percent, and the specific surface area is nearly 600 square meters per m3And a microporous membrane exposure system is adopted, and a fan is arranged in the microporous membrane exposure system.
Further, the filtering mechanism can be divided into a quartz sand filtering mechanism and an activated carbon adsorber, the quartz sand filtering mechanism and the activated carbon adsorber respectively contain quartz sand filtering materials and coconut shell activated carbon inside, sewage can be highly purified and rapidly adsorbed to residual peculiar smell in the water through the quartz sand filtering mechanism and the activated carbon adsorber, and the treatment quality of the sewage is guaranteed.
Furthermore, the sedimentation tank adopts a vertical flow type, the total retention time is 3.0 hours, the sedimentary sludge completely flows back to the sludge tank for further digestion to reduce the residual sludge, the middle tank is designed into a tooth-shaped water collecting tank with adjustable liquid level, and the sedimentation effect of the sedimentation tank on the sewage is improved.
Example 2
Principle of construction
The principle that the engineering structure design follows, according to the information provided by the process and other specialties, and according to the existing relevant design specifications of the state, the safety, the firmness and the durability of the structure are preferentially considered, the investment is saved, and the steel consumption is saved; the structural design meets the process design and follows the principles of safe and reliable structure, convenient construction and reasonable cost; the design is according to engineering geology, hydrology data and design standard and the standard in the construction place, makes the structure can satisfy bearing capacity, stability and bearing capacity extreme condition requirement and normal use extreme condition requirements such as deformation, crack resistance in construction stage and use stage.
Second, accident emergency treatment
The emergency treatment of the accident mainly refers to an emergency method when the sewage cannot be treated in abnormal working states such as power failure of a factory, mechanical failure, personal accident, pool leakage and the like.
(1) The power failure is that the acceptable factory power failure time of the system is 24 hours; during the period, all sewage enters the regulating tank, and if the power failure time exceeds 24 hours, the rinsing water quantity of the farm is reduced as much as possible; or a temporary power supply is connected from the outside for the water inlet pump and the air compressor of the anaerobic pool to work, so that the acceptable power failure time of the system can be prolonged to 72 hours.
(2) When mechanical failure occurs, firstly, the power supply and relevant valves are closed, and the maintenance personnel are arranged to repair in time to restore the normal work, and the acceptable mechanical failure downtime of the treatment process is 24 hours.
(3) When a human body accident happens: the relevant equipment is immediately closed, rescue is carried out in time, whether medical services are sent or not is determined according to the injury condition, and the on-duty personnel can arrange replacement in the shortest time.
(4) When pool leakage occurs: the slight leakage can be stopped temporarily and is remedied temporarily by using a plugging agent; when obvious leakage occurs, the waste water in the leakage pool is pumped to other related pools or adjusting pools, and after the waste water is cleaned by clean water, leakage is repaired inside the pools until the fault is eliminated.
Third, power supply design
(1) Low-voltage distribution and electric starting method: power equipment adopted by the sewage treatment process system is 380V/220V low-voltage motor, so that direct starting is generally adopted; motors larger than or equal to 7.5KW all adopt a soft start mode.
(2) Protection mode: relay protection low-voltage motor: short-circuit protection, overcurrent protection, overheat protection, protection required by the motor; the process matched motor comprises the following steps: short-circuit protection, overcurrent protection, overheat protection, the protection that motor self required, ground protection: the PEN system is adopted, each power distribution is provided with a centralized grounding device, the grounding resistance is less than 4 omega, and when the distance of a low-voltage feeder exceeds 50m, a repeated grounding device is arranged, and the grounding resistance is not more than 10 omega.
(3) In the design scheme, a power supply is a three-phase four-wire system, the alternating voltage of a motor is 380V/220V, and the frequency is 50 Hz; the signal voltage is 24V safe voltage, the accessed power supply is provided by the original low-voltage power distribution cabinet of a factory, and the cable is led to the automatic control refusal → the field operation box → each electric appliance through a cable trench or a bridge.
Fourth, operation control
At present, the automation technology is widely applied to sewage treatment plants, remarkable technical and economic benefits are brought into play, and practice proves that the real-time monitoring and control on sewage treatment can ensure the quality of effluent water, reduce the working intensity, improve the production efficiency and reduce the energy consumption.
Therefore, the automatic control system which is economical and practical plays an important role in the safe, reasonable and scientific operation of the whole sewage treatment plant, so that the manpower resource can be saved, the working efficiency is improved, and the automatic production management degree of the whole plant is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A pig farm sewage treatment process is characterized by comprising the following steps:
the method comprises the following steps: manually cleaning pig manure in a pig house to a manure collecting pool, depositing sewage flushed by the pig house in a sand depositing pool, and discharging the deposited sewage into an adjusting pool;
step two: the adjusting tank adjusts the sewage inside, adjusts the water quantity and balances the water quality, and the water enters the air floatation machine;
step three: the air flotation machine is used for carrying out solid-liquid separation on the adjusted sewage, and decomposing part of organic matters which are difficult to degrade, and the separated sewage enters an anaerobic tank;
step four: the anaerobic tank decomposes and degrades organic matters in the sewage by using anaerobic bacteria and enters the sedimentation tank;
step five: the sedimentation tank is used for carrying out sedimentation separation on the sewage to separate mud and water, and the mud and water enter the oxidation tank through the intermediate tank;
step six: the oxidation pond provides an oxygen source for the sewage through the biological treatment device, organic matters in the sewage are adsorbed and degraded by microorganisms, and the purified water enters the filtering mechanism;
step seven: the filtering mechanism filters water through the filtering device, and the filtered water is discharged into the disinfection tank for disinfection and discharge.
2. The pig farm sewage treatment process according to claim 1, characterized in that: the disinfection tank is in contact disinfection, and is disinfected by an ultraviolet disinfector, and the contact time is 1 hour.
3. The pig farm sewage treatment process according to claim 1, characterized in that: the regulating reservoir is designed to have hydraulic retention time of 10 hours and effective volume of 50 cubic meters, adopts a reinforced concrete structure, and is internally provided with two submersible sewage pumps which are used for one purpose and one spare.
4. The pig farm sewage treatment process according to claim 1, characterized in that: the oxidation time of the oxidation pond to the sewage is 6-7 hours, the interior of the oxidation pond is provided with the elastic filler with high specific surface area, the filling rate is 70 percent, and the specific surface area is approximately 600 square meters per m3。
5. The pig farm sewage treatment process according to claim 1, characterized in that: the filtering mechanism is composed of a quartz sand filtering mechanism and an activated carbon adsorber, and the quartz sand filtering mechanism and the activated carbon adsorber respectively contain a quartz sand filtering material and coconut shell activated carbon inside.
6. The pig farm sewage treatment process according to claim 1, characterized in that: the sedimentation tank adopts a vertical flow type, the total retention time is 3 hours, and the intermediate tank is a tooth-shaped water collecting tank with adjustable liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008971.6A CN111170558A (en) | 2020-01-06 | 2020-01-06 | Pig farm sewage treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008971.6A CN111170558A (en) | 2020-01-06 | 2020-01-06 | Pig farm sewage treatment process |
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| CN111170558A true CN111170558A (en) | 2020-05-19 |
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| CN202010008971.6A Pending CN111170558A (en) | 2020-01-06 | 2020-01-06 | Pig farm sewage treatment process |
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| CN (1) | CN111170558A (en) |
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Application publication date: 20200519 |