CN113845260A - Pig farm waste treatment system and method - Google Patents
Pig farm waste treatment system and method Download PDFInfo
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- CN113845260A CN113845260A CN202111277573.5A CN202111277573A CN113845260A CN 113845260 A CN113845260 A CN 113845260A CN 202111277573 A CN202111277573 A CN 202111277573A CN 113845260 A CN113845260 A CN 113845260A
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- excrement
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- feces
- dung
- liquid dung
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 210000003608 fece Anatomy 0.000 claims abstract description 225
- 239000007788 liquid Substances 0.000 claims abstract description 181
- 238000000926 separation method Methods 0.000 claims abstract description 35
- 238000000746 purification Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000010900 piggery waste Substances 0.000 claims abstract description 7
- 238000005201 scrubbing Methods 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 claims description 30
- 239000010871 livestock manure Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 22
- 238000003331 infrared imaging Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 2
- 238000003915 air pollution Methods 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 241000282887 Suidae Species 0.000 description 12
- 230000002550 fecal effect Effects 0.000 description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000009264 composting Methods 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000010794 food waste Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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Images
Classifications
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/01—Removal of dung or urine, e.g. from stables
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
- C05F3/06—Apparatus for the manufacture
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Housing For Livestock And Birds (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a piggery waste treatment system and a method, wherein the system comprises a feces collection device, a solid-liquid separation device and a feces treatment device; the method comprises the following steps: excrement newly discharged to the excrement leakage plate and excrement in the excrement ditch of the pig are sucked into an excrement collection pool by adopting an excrement collection device; adjusting the pH value of the dirt and stirring the dirt in the dirt collecting tank; introducing the stirred excrement into a solid-liquid separation device for solid-liquid separation; and introducing the liquid dung after solid-liquid separation into a liquid dung treatment device for purification treatment. The invention and the ingenious proposal thereof solve the problems of large air pollution of the pig farm, large difficulty in treating the excrement of the pig farm and complex treatment system, and create a brand new method for treating the waste of the pig farm.
Description
Technical Field
The invention belongs to the technical field of pig farm environmental protection, and particularly relates to a pig farm waste treatment system and method.
Background
Since the mode of large-scale pig raising or intensive pig raising is available, the treatment of dirt (generally called pig farm waste) such as manure, sewage, food residues and the like in a pig farm always belongs to research hotspots and difficulties in the field. With the progress of technology, there are thousands of pig farm waste treatment systems or methods, for example, the treatment method of pig manure provided in document CN105417920A is a process of collecting pig manure and washing water, and respectively treating and recycling solid and liquid, and includes the following steps: pig manure and flushing water in a pigsty are collected in a manure pit in a unified manner, and the pig manure and the flushing water collected in the manure pit are conveyed to a separator for solid-liquid separation; conveying the liquid separated in the previous step into a methane tank, conveying the solid onto a vibration separator for vibration dehydration and scattering solid excrement, and conveying the separated liquid dung into the methane tank; conveying the scattered excrement to a stacking site for centralized stacking; also for example, the method for treating feces in a pig farm provided in document CN108947166A comprises the steps of: collecting excrement of a pig farm, feeding the collected excrement and the ingredients into a composting device, introducing part of liquid dung filtered by the composting device in the step one into a methane tank for fermentation to generate methane, wherein the methane is used for washing clothes and cooking in the pig farm, introducing the other part of liquid dung filtered by the composting device in the step two into a sedimentation tank for sedimentation and disinfection, and after sedimentation and disinfection, the liquid dung is used for cleaning a pig house, and after fermentation and composting treatment of dry excrement in the composting device in the step three, the liquid dung is used as a raw material of an organic compound fertilizer, and after fermentation and treatment of the dry excrement in the composting device in the step four, the liquid dung is used as fish feed; further, as disclosed in CN103191904A, the method for treating feces in pig farm comprises separating the feces of pig into dry feces and liquid feces, wherein the dry feces are fermented and then used as raw materials for producing organic compound fertilizer and fish feed, the liquid feces are treated in two parts, one part of liquid feces is discharged into methane tank for producing methane, the other part of liquid feces is sent into sedimentation tank for sedimentation and disinfection, and the liquid feces is used for cleaning pig farm after sedimentation and disinfection.
However, as mentioned above, the prior art is only limited to the treatment of feces, and the two problems in the prior pig farm feces treatment process cannot be avoided: firstly, the collected excrement and liquid manure can generate odorous gases containing ammonia, hydrogen sulfide, sulfur dioxide and the like, seriously pollute the air environment and even damage the health of operators; secondly, the excrement and the liquid manure are difficult to treat, the treatment process is complex, the floor area of the treatment device is large, a plurality of treatment liquid medicines are usually required to be added according to the process, and the liquid medicine reaction liquid inevitably further increases additional treatment processes.
Disclosure of Invention
The invention aims to provide a piggery waste treatment system and method, which are not only suitable for intensive pig farms of various scales, but also can fundamentally solve the problem of air pollution in the process of treating the piggery excrement, simplify the process of treating the piggery excrement and greatly reduce the difficulty of treating the piggery excrement.
In order to achieve the above object, the present invention adopts the following technical solutions.
In the present invention, the excrement leaking plate is a leaking plate laid on the excrement discharging area of the pig, and the excrement discharging channel is a excrement discharging channel positioned below the leaking plate.
A piggery waste treatment system comprises a feces collection device, a solid-liquid separation device and a feces liquid treatment device;
the excrement collecting device comprises an excrement sucking system which is controlled to operate by a controller, an excrement sucking port of the excrement sucking system is connected with the pig house excrement leaking plate, an excrement sucking channel close to the excrement leaking plate is vertically arranged, and an excrement discharging port of the excrement sucking system is communicated with the excrement collecting pool;
the excrement collecting device comprises an infrared imaging thermometer for monitoring the newly-discharged excrement of the pig, the controller is connected with the infrared imaging thermometer and can receive and process temperature information fed back by the infrared imaging thermometer, and when the infrared imaging thermometer monitors the newly-discharged excrement of the pig, the excrement sucking system is started immediately to suck the excrement; or: the excrement collecting device comprises a temperature sensor, the temperature sensor is embedded in a framework on the surface of the pig house excrement leaking plate and is integrated with the framework of the pig house excrement leaking plate, the controller is connected with the temperature sensor and can receive and process temperature information fed back by the temperature sensor, and when the temperature sensor senses the temperature matched with the newly-discharged excrement of the pigs, the excrement sucking system is immediately started to suck the excrement;
the liquid dung processing device comprises a liquid dung collecting tank, wherein a photocatalytic material is loaded on the surface of the liquid dung collecting tank, an overflow hole is formed in the top of the wall of the liquid dung collecting tank, grooves which are continuously arranged are formed in the side of the liquid dung collecting tank, adjacent grooves are separated through a protruding part, the protruding part and a movable baffle plate jointly enclose the grooves, a groove body and the movable baffle plate jointly enclose the liquid dung collecting tank, the elevation of the top of the protruding part on the same side of the liquid dung collecting tank is sequentially reduced, and the elevation of the top of the protruding part far away from the liquid dung collecting tank is smaller, so that liquid dung supernatant in the liquid dung collecting tank can be continuously clarified and overflowed;
wherein, the dirty collecting pit of excrement connects solid-liquid separation equipment, pH governing system or the ultraviolet lamp of suitable quantity, through changing the dirty pH of excrement in the dirty collecting pit of excrement or opening the ultraviolet lamp and shine and restrain the microbial growth, prevents that the microorganism from decomposing the dirty harmful gas such as ammonia, hydrogen sulfide of excrement, solves the pig farm harmful gas emission problem from the source, and liquid manure processing apparatus is connected to solid-liquid separation equipment's liquid outlet, is provided with the agitator in the dirty collecting pit of excrement.
As a preferred scheme of the invention, a plurality of dung pipes which are arranged closely form a dung sucking channel, the dung pipes which are close to a dung sucking port are vertically arranged, 2-4 dung pipes share the same dung sucking pump, the dung sucking pump is arranged on the pipe after the dung pipes converge, and the dung sucking pump is connected with a controller and is controlled to operate by the controller. Therefore, the device has the advantages of compact structural arrangement and convenience in sucking the excrement. As the preferred scheme of the invention, the excrement suction pump is arranged close to the excrement collection pool, so that the excrement suction pump is convenient to overhaul, and the noise of the pigsty can be reduced.
In order to further optimize the waste treatment effect of the pig farm: the excrement collecting device also comprises an excrement sucking channel II which is formed by a plurality of excrement pipes which are arranged closely, an excrement sucking port of the excrement sucking channel II is positioned at the bottom of the excrement ditch, and a water level meter is arranged in the excrement ditch below the excrement leaking plate, the controller is connected with the water level meter and can receive and process liquid level information fed back by the water level meter, and when the water level meter in the excrement ditch senses that the amount of excrement discharged by the pigs exceeds a specified amount (the specified amount is calculated according to subsequent excrement treatment capacity), the excrement sucking system is started immediately to suck excrement.
As the preferred scheme of the invention, the surface of the convex part of the liquid dung processing device is used as an overflow surface of liquid, the tops of all convex parts on the same side of the liquid dung collecting groove are positioned on the same inclined plane, and the included angle between the inclined plane and the horizontal plane is not more than 30 degrees.
In order to realize convenient cleaning of sediment on the tank wall and the purification effect of the liquid dung, the upper part of the baffle is connected with a two-dimensional moving mechanism, and the two-dimensional moving mechanism can drive the baffle to lift and can also drive the baffle to translate along the direction of the groove; the lower part of the baffle is connected with a scrubbing piece, and the scrubbing piece is matched with the liquid dung collecting tank and the groove, so that the scrubbing piece is driven by the two-dimensional moving mechanism to scrub along the wall surface of the liquid dung collecting tank, the wall surface of the groove and the wall surface of the bulge part.
Further, the two-dimensional moving mechanism comprises a transverse telescopic motor, a telescopic rod of the transverse telescopic motor is connected with the frame, a vertical telescopic mechanism is arranged on the frame, and a telescopic rod of the vertical telescopic mechanism is connected with the baffle; the scrubbing piece adopts scrubbing cotton; the height of the baffle is not less than the depth of the liquid dung collecting groove, and after the scrubbing piece is matched in the liquid dung collecting groove and the groove, the two-dimensional moving mechanism drives the baffle and the scrubbing piece to horizontally move to scrub the groove wall.
As a preferable scheme of the invention, a corrugated plate with height difference is adopted as the continuously arranged grooves and the raised parts, the grooves and the raised parts are integrally formed, and the bottom surface of the corrugated plate is a plane.
A pig farm waste treatment method adopting the system comprises the following steps:
step 1: adopt dirty collection device of excrement to inhale immediately to the excrement and urine on leaking the excrement board with the pig newly, and/or in the dirty collection pool of excrement: absorbing the excrement in the excrement ditch into an excrement collection pool by adopting an excrement collection device;
step 2: after the step 1 is finished, (when necessary) adding a proper amount of water into the excrement collecting pool through a water supply system, adjusting the pH value through a pH adjusting system and/or turning on an ultraviolet lamp, and stirring the excrement in the excrement collecting pool through a stirrer;
and step 3: introducing the stirred excrement into a solid-liquid separation device for solid-liquid separation; solid waste obtained by solid-liquid separation can be used as compost;
and 4, step 4: and introducing the liquid dung after solid-liquid separation into a liquid dung treatment device for purification treatment.
Wherein the purification treatment step comprises:
step 4-1: the liquid dung from the solid-liquid separation device enters a liquid dung collecting tank, and enters a clear liquid pool after being subjected to step-by-step precipitation treatment and multiple overflow;
step 4-2: step 4-1, after T hours, removing the baffle, scrubbing the wall surfaces of the liquid dung collecting tank, the groove and the protruding part, and resetting the baffle after scrubbing is finished;
step 4-3: and after the step 4-2 is finished, repeating the step 4-1 and the step 2.
As a preferred embodiment of the present invention, the step 4-2 comprises: after T hours are carried out in the step 4-1, the baffle is driven to move upwards to a proper height through the vertical telescopic mechanism, and the proper height meets the following requirements: the scrubbing piece can be clamped into the liquid dung collecting tank and the groove after moving horizontally and is in pressure contact with the tank wall; then the transverse telescopic motor drives the baffle to move horizontally to enable the scrubbing piece to scrub the wall of the tank; after the scrubbing is finished, the baffle is driven to reset through the vertical telescopic mechanism and the transverse telescopic motor together.
The present invention has the following advantageous effects.
By adopting the scheme of the invention, excrement just discharged by pigs and excrement remained or blocked in the excrement ditch can be immediately sensed and sucked into the excrement collection pool, stirring treatment is carried out in time, the pH value of excrement in the excrement collection pool is regulated, the ultraviolet lamp is started to inhibit the growth of microorganisms, solid-liquid separation and excrement purification treatment are carried out, the growth of microorganisms is hardly caused in the whole process, the problem of accumulation fermentation of the excrement of the pigs is hardly caused, the generation of ammonia gas by decomposing the excrement by the microorganisms is prevented, the generation of odor gas containing ammonia, hydrogen sulfide, sulfur dioxide and the like is avoided, the air pollution problem in the excrement treatment process is fundamentally solved, and the problem of harmful gas emission in a pig farm is solved from the source.
In most of the prior pig farms, the excrement discharged by the pigs usually stays in an excrement plate/excrement tank for a certain time, the excrement is easy to dry and harden under the condition, and a large amount of odor gas is also generated if more water is accumulated in the excrement tank, so that the subsequent treatment is not facilitated; and a part of pig farms adopt the excrement scraping system to scrape away excrement of the pigs in time, but the excrement scraping system is easy to block and is very difficult to maintain. By adopting the scheme of the invention, the excrement just discharged from the pigs is stirred by adding water, the excrement can be easily scattered, the subsequent solid-liquid separation is facilitated, and the solid waste after the solid-liquid separation can be used as an organic fertilizer, so that the nutrition of the fertilizer is retained to the maximum extent.
By adopting the scheme of the invention, the liquid dung enters the liquid dung collecting tank and overflows to the grooves on the side parts of the liquid dung through the overflow holes, and then overflows to the lowest part step by step, and the liquid dung is purified in the grooves after passing through one groove; due to the adoption of the corrugated plate or the overflow structure similar to the corrugated plate, compared with a sedimentation tank, the volume of the liquid dung collecting tank and the volume of the overflow structure can be made as small as possible, the structure is matched with the movable baffle (the lower part of the baffle is provided with the scrubbing piece), the baffle can be conveniently and periodically moved, precipitates on the liquid dung collecting tank and the wall of the groove can be timely scraped, the liquid dung can be smoothly clarified and purified, and the liquid dung purification effect is considered.
By adopting the scheme of the invention, the device is mainly divided into the working procedures of sucking away excrement just discharged by pigs, sucking away excrement accumulated or blocked in an excrement ditch, stirring treatment, solid-liquid separation and excrement liquid purification treatment, a plurality of large sedimentation tanks and liquid storage tanks are not needed, a large purification and deodorization system is not needed, the whole treatment process is very simple, the connection of each treatment procedure is good, and the treatment difficulty is very small.
The invention and the ingenious proposal thereof solve the problems of large air pollution of the pig farm, large difficulty in treating the excrement of the pig farm and complex treatment system, and create a brand new method for treating the waste of the pig farm. The experimental results show that: the scheme of the invention has good treatment effect on pig farm wastewater COD, TOC and NH3-N, TP removal rates of 22-47%, 24-46%, 35.2-45.3% and 39-49% respectively.
Drawings
FIG. 1 is a schematic view of a pig farm waste treatment system according to example 1;
FIG. 2 is a first schematic view of a feces suction port of the pig farm waste disposal system according to example 1;
FIG. 3 is a second schematic view of a feces suction port of the pig farm waste disposal system in example 1;
FIG. 4 is a first schematic view of a liquid manure treatment apparatus of the waste treatment system of a pig farm according to example 1;
FIG. 5 is a second schematic view of a liquid manure treatment apparatus of the pig farm waste treatment system according to example 1;
fig. 6 is a third schematic view (in a liquid manure purification state) of a liquid manure treatment device of the pig farm waste treatment system in example 1;
FIG. 7 is a side schematic view of FIG. 6;
fig. 8 is a fourth schematic view (sediment-cleaned state) of the liquid manure treatment apparatus of the pig farm waste treatment system according to example 1;
FIG. 9 is a side schematic view of FIG. 8;
FIG. 10 is a schematic view of a pig farm waste disposal system according to example 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the following embodiments are only used for understanding the principle of the present invention and the core idea thereof, and do not limit the scope of the present invention. It should be noted that modifications to the invention as described herein, which do not depart from the principles of the invention, are intended to be within the scope of the claims which follow.
Example 1
Referring to fig. 1 to 9, a piggery waste treatment system comprises a manure collection device, a solid-liquid separation device 38 and a manure liquid treatment device;
the feces collection device comprises a feces suction system controlled to operate by the controller 28, a feces suction port of the feces suction system is connected with the pig house feces leaking plate 31, a feces suction channel close to the feces leaking plate 31 is vertically arranged, and a feces discharge port of the feces suction system is communicated with the feces collection pool 23;
as shown in fig. 2 and 3, the feces collection device comprises a temperature sensor 33, the temperature sensor 33 is embedded on the framework on the surface of the pig house feces leaking plate 31 and is integrated with the framework of the pig house feces leaking plate 31, the controller 28 is connected with the temperature sensor 33 and can receive and process temperature information fed back by the temperature sensor 33, and when the temperature sensor 33 senses the temperature matched with the newly discharged feces of the pig, the feces suction system is immediately started to suck the feces;
as shown in fig. 4 to 7, the liquid dung processing device includes a liquid dung collecting tank 12, an overflow hole 15 is provided on the top of the tank wall of the liquid dung collecting tank 12, grooves 13 continuously arranged are provided on the side of the liquid dung collecting tank 12, adjacent grooves 13 are separated by a protruding part 14, the protruding part 14 and a removable baffle 2 jointly enclose the grooves 13, a tank body 11 and the removable baffle 2 jointly enclose the liquid dung collecting tank 12, and elevations of the tops of the protruding parts 14 on the same side of the liquid dung collecting tank 12 are sequentially reduced, and the elevations of the tops of the protruding parts 14 far away from the liquid dung collecting tank 12 are smaller, so that liquid dung supernatant in the liquid dung collecting tank 12 can be continuously clarified and overflowed;
wherein, the dirty collecting pit 23 of excrement connects solid-liquid separation equipment 38, pH governing system 34 and water supply system 26, and the discharge gate of the dirty collecting pit 23 of excrement passes through the pipeline connection solid-liquid separation equipment 38 of taking pump 36 and enters the mouth, and the liquid outlet of solid-liquid separation equipment 38 passes through pipeline 21 connection liquid dung processing apparatus that has valve 22, is provided with agitator 25 and a certain amount of ultraviolet lamps in the dirty collecting pit 23 of excrement, and agitator 25 drives through motor 27. Inhibit microorganism growth through changing pH and opening ultraviolet lamp 35, prevent that the microorganism from decomposing the excrement and polluting and producing ammonia, the harmful gas of hydrogen sulfide solves the pig farm harmful gas emission problem from the source.
In this embodiment, as shown in fig. 1, a plurality of dung pipes 30 arranged next to each other form a dung suction channel, the dung pipes 30 near the dung suction port are arranged vertically, 2-4 dung pipes 30 share one dung suction pump 29, the dung suction pump 29 is arranged on the pipe after the dung pipes 30 converge, and the dung suction pump 29 is connected with the controller 28 and is controlled to operate by the controller 28. A manure pump 29 is arranged adjacent to the manure collection pit 23.
In this embodiment, the surface of the convex portion 14 of the liquid dung processing device is used as an overflow surface of the liquid dung, the tops of all the convex portions 14 on the same side of the liquid dung collecting tank 12 are located on the same inclined plane, and the included angle between the inclined plane and the horizontal plane is not more than 30 °.
In this embodiment, as shown in fig. 6 to 9, the upper portion of the baffle 2 is connected to a two-dimensional moving mechanism, and the two-dimensional moving mechanism can drive the baffle 2 to lift and also can drive the baffle 2 to translate along the direction of the groove 13; the lower part of the baffle 2 is connected with a scrubbing piece 4, and the scrubbing piece 4 is matched with the liquid manure collecting tank 12 and the groove 13 so as to realize wall-adhering scrubbing along the wall surface of the liquid manure collecting tank 12, the wall surface of the groove 13 and the wall surface of the bulge part 14 by driving the scrubbing piece 4 through a two-dimensional moving mechanism. The two-dimensional moving mechanism comprises a transverse telescopic motor 3, a telescopic rod of the transverse telescopic motor 3 is connected with a frame 5, a vertical telescopic mechanism 6 is arranged on the frame 5, and a telescopic rod of the vertical telescopic mechanism 6 is connected with a baffle 2; the scrubbing piece 4 is made of scrubbing cotton; the height of the baffle 2 is not less than the depth of the liquid dung collecting groove 12, and after the scrubbing piece 4 is matched in the liquid dung collecting groove 12 and the groove 13, the two-dimensional moving mechanism drives the baffle 2 and the scrubbing piece 4 to horizontally move to scrub the wall of the groove.
In the present embodiment, as shown in fig. 4 and 5, a corrugated plate having a level difference is used as the grooves 13 and the protrusions 14 which are arranged continuously, the grooves 13 and the protrusions 14 are formed integrally, and the bottom surface of the corrugated plate is a flat surface.
In this embodiment, a material pushing mechanism 16 (an air cylinder may be used, and a push plate is installed at the front end of an expansion link of the air cylinder) is further disposed in the fecal sewage collecting tank 23, so as to push solid matters settled at the bottom of the tank when needed.
Example 2
A piggery waste disposal system, as shown in fig. 10, which is different from example 1 in that: the feces collection device comprises an infrared imaging thermometer 32 for monitoring the newly-discharged feces of the pig, the controller 28 is connected with the infrared imaging thermometer 32 and can receive and process the temperature information fed back by the infrared imaging thermometer 32, and when the infrared imaging thermometer 32 monitors the newly-discharged feces of the pig, the feces suction system is immediately started to suck the feces.
In the feces collecting device in the embodiment, a plurality of pipes which are arranged next to each other are vertically arranged below a feces leaking plate 31 of a pig house, the number of the pipes is determined according to the area of the feces leaking plate 31, the pipes are required to be fully distributed below the feces leaking plate 31 in principle, the upper end ports of the pipes are used as feces suction ports, 2-4 feces pipes 30 share the same feces suction pump 29, 2-4 feces pipes 30 are converged into the same pipe, and the feces suction pump 29 is arranged on the converged pipe. When the temperature sensor 33 senses the temperature which is matched with the newly discharged excrement of the pig, the temperature sensor 33 feeds back the information to the controller 28, and the controller 28 controls the excrement suction pump 29 corresponding to the temperature sensor to start, so that the excrement is sucked and sent to the excrement collecting tank 23 through the excrement pipe 30. For example: after the excrement discharged by the pig falls on the No. 1 temperature sensor, the No. 1 temperature sensor feeds the temperature information back to the controller 28, and the controller controls the excrement suction pump corresponding to the No. 1 temperature sensor to start, so that the excrement is sucked away.
In the liquid dung processing device in the embodiment, as shown in fig. 6 and 7 in an initial state, the baffle plates 2 are hermetically attached to two sides of the corrugated plate, the raised parts 14 and the baffle plates 2 jointly enclose the corrugated plate to form the grooves 13, and the groove body 11 and the baffle plates 2 jointly enclose the liquid dung collecting groove 12; after the liquid dung inlet pipe 8 is opened, liquid dung 7 in the liquid dung inlet pipe 8 flows into the liquid dung collecting tank 12, when liquid dung in the liquid dung collecting tank 12 reaches the overflow hole 15, the liquid dung overflows into the groove 13 on the side part of the liquid dung collecting tank through the overflow hole 15, when the liquid dung in the groove 13 adjacent to the liquid dung is full, the liquid dung continuously overflows into the groove 13 on the next stage until the liquid dung overflows to the lowest position step by step (as shown in fig. 4, an arrow 9 in the figure indicates the overflow direction of the liquid dung), in the process (also referred to as a liquid dung purification process), the liquid dung is purified in the groove 13 after passing through one groove 13, and the purified liquid is subjected to a subsequent advanced treatment process or enters a clear liquid discharge tank 37; after a period of time, when sediments on the tank wall (the tank wall comprises the tank body 11 wall surface and the groove 13 side wall 1) need to be cleaned, as shown in fig. 8 and fig. 9, the baffle plate 2 can be driven to move upwards to a proper height through the vertical telescopic mechanism 6 (the height is satisfied that the scrubbing piece 4 can be clamped into the liquid dung collecting tank 12 and the groove 13 after moving horizontally and is in pressure contact with the tank wall), then the horizontal telescopic motor 3 drives the baffle plate 2 to move horizontally to scrub the tank wall, the scrubbed sediments are collected for subsequent advanced treatment, and the baffle plate is driven to reset through the two-dimensional moving mechanism after scrubbing the tank wall. The liquid dung purification treatment and the tank wall cleaning can be carried out at any time or at regular intervals.
Example 3
A method of fecal management employing the system of either embodiment 1 or embodiment 2 comprising the steps of:
step 1: excrement newly discharged onto the excrement leakage plate 31 by the pigs is immediately sucked into the excrement collection pool 23 by adopting an excrement collection device;
step 2: after the step 1 is finished, adding a proper amount of water into the fecal sewage collecting pool 23 through the water supply system 26, adjusting the pH through the pH adjusting system 34, stirring the fecal sewage in the fecal sewage collecting pool 23 through the stirrer 25, and starting the ultraviolet lamp 35 to irradiate the fecal liquid in the whole process; in the step, as the area of the pig farm is large, when a plurality of feeding areas share one excrement collecting pool 23, pigs can be discharged almost every few minutes, so that excrement stirring and subsequent treatment in the excrement collecting pool 23 almost continuously operate, and the operation can be stopped at night;
and step 3: introducing the stirred excrement into a solid-liquid separation device 38 for solid-liquid separation;
and 4, step 4: and introducing the liquid dung after solid-liquid separation into a liquid dung treatment device for purification treatment.
Wherein the purification treatment step comprises:
step 4-1: the liquid dung from the solid-liquid separation device 38 enters a liquid dung collecting tank 12, and enters a clear liquid pool 37 after being subjected to progressive precipitation treatment and multiple overflow;
step 4-2: after T hours are carried out in the step 4-1, the baffle 2 is removed, the wall surfaces of the liquid manure collecting tank 12, the groove 13 and the protruding part 14 are scrubbed, and the baffle 2 is reset after scrubbing is finished;
step 4-3: and after the step 4-2 is finished, repeating the step 4-1 and the step 2.
Wherein the step 4-2 comprises: after T hours are carried out in the step 4-1, the baffle 2 is driven to move upwards to a proper height through the vertical telescopic mechanism 6, and the proper height meets the following requirements: the scrubbing piece 4 can be clamped into the liquid dung collecting tank 12 and the groove 13 after moving horizontally and is in pressure contact with the tank wall; then the baffle 2 is driven by the transverse telescopic motor 3 to move horizontally to enable the scrubbing piece 4 to scrub the wall of the tank; after the scrubbing is finished, the baffle 2 is driven to reset through the vertical telescopic mechanism 6 and the transverse telescopic motor 3 together.
Example 4
A piggery waste treatment system, referring to example 1, the main difference with example 1 is that: the surface of the liquid manure collection tank 12 is loaded with a photocatalytic material which can generate active free radicals to degrade pollutants under illumination; the excrement collecting device also comprises a second excrement sucking channel consisting of a plurality of excrement pipes which are arranged closely, an excrement sucking port of the second excrement sucking channel is positioned at the bottom of the excrement ditch (if a concave area is arranged at the bottom of the excrement ditch, the excrement sucking port is arranged at the position of the concave area or a low point, which is mainly convenient for sucking away residual excrement), and a water level meter arranged in the excrement ditch below the excrement leaking plate 31, wherein the controller 28 is connected with the water level meter and can receive and process the liquid level information fed back by the water level meter, and when the water level meter in the excrement ditch senses that the amount of excrement discharged by pigs exceeds a specified amount, the excrement sucking system is started immediately to suck excrement. Compared with the embodiment 1 or the embodiment 2, the scheme in the embodiment is based on comprehensive treatment of the excrement on the excrement leaking plate and the dirt in the excrement ditch, and the treatment effect is better.
A method of fecal management employing the system of this embodiment comprising the steps of:
step 1: excrement newly discharged onto the excrement leakage plate 31 by the pigs is immediately sucked into the excrement collection pool 23 by adopting an excrement collection device, and excrement in an excrement ditch (mainly residual or blocked excrement, urine, sewage, food residue and other dirt) is sucked into the excrement collection pool 23 by adopting the excrement collection device;
step 2: after the step 1 is finished, adding a proper amount of water (adding water if necessary) into the fecal sewage collecting tank 23 through a water supply system, adjusting the pH value through a pH adjusting system 34 and/or turning on an ultraviolet lamp 35, and stirring the fecal liquid in the fecal sewage collecting tank 23 through a stirrer 25;
and step 3: introducing the stirred liquid dung into a solid-liquid separation device 38 for solid-liquid separation;
and 4, step 4: introducing the liquid with a large amount of solid residues after solid-liquid separation into a liquid manure treatment device for purification treatment.
The liquid treated by the scheme in examples 1 and 4 (small test) is respectively detected, and the result shows that: the removal rates of COD, TOC and NH3-N, TP of the wastewater of the pig farm are 22-47%, 24-46%, 35.2-45.3% and 39-49% respectively, and the method has good treatment effect.
Claims (10)
1. The utility model provides a pig farm waste processing system, includes dirty collection device of excrement, solid-liquid separation equipment (38), liquid dung processing apparatus, its characterized in that:
the feces collection device comprises a feces suction system which is controlled to operate by a controller (28), a feces suction port of the feces suction system is connected with a pig house feces leakage plate (31), a feces suction channel close to the feces leakage plate (31) is vertically arranged, and a feces discharge port of the feces suction system is communicated with the feces collection pool (23);
the feces collection device comprises an infrared imaging thermometer (32) for monitoring the newly discharged feces of the pig, the controller (28) is connected with the infrared imaging thermometer (32) and can receive and process temperature information fed back by the infrared imaging thermometer, and when the infrared imaging thermometer (32) monitors the newly discharged feces of the pig, the feces suction system is started immediately to suck the feces; or: the feces collection device comprises a temperature sensor (33), the temperature sensor (33) is embedded on a framework on the surface of the pig house feces leaking plate (31) and is integrated with the framework of the pig house feces leaking plate (31), the controller (28) is connected with the temperature sensor (33) and can receive and process temperature information fed back by the temperature sensor (33), and when the temperature sensor (33) senses the temperature matched with the newly-discharged feces of the pig, the feces suction system is immediately started to suck the feces;
the liquid dung processing device comprises a liquid dung collecting tank (12), wherein a photocatalytic material is loaded on the surface of the liquid dung collecting tank (12), overflow holes (15) are formed in the top of the wall of the liquid dung collecting tank (12), grooves (13) which are continuously arranged are formed in the side of the liquid dung collecting tank (12), adjacent grooves (13) are separated through bulges (14), the bulges (14) and the movable baffle plates (2) jointly enclose the grooves (13), the groove (11) and the movable baffle plates (2) jointly enclose the liquid dung collecting tank (12), the elevation of the top of the bulges (14) on the same side of the liquid dung collecting tank (12) is sequentially reduced, the elevation of the top of the bulges (14) far away from the liquid dung collecting tank (12) is smaller, and liquid dung supernatant in the liquid dung collecting tank (12) can be continuously clarified and overflowed;
wherein, the excrement collecting pool (23) is connected with the solid-liquid separation device (38), the pH adjusting system (34) and/or the ultraviolet lamp (35), the liquid outlet of the solid-liquid separation device (38) is connected with the liquid excrement treatment device, and a stirrer (25) is arranged in the excrement collecting pool (23).
2. The pig farm waste treatment system of claim 1, wherein: a plurality of dung pipes (30) which are arranged closely form a dung sucking channel, the dung pipes (30) which are close to a dung sucking opening are vertically arranged, 2-4 dung pipes (30) share the same dung sucking pump (29), the dung sucking pump (29) is arranged on the pipe after the dung pipes (30) converge, and the dung sucking pump (29) is connected with a controller (28) and is controlled to operate by the controller (28); the excrement suction pump (29) is arranged close to the excrement collecting pool (23).
3. The pig farm waste treatment system of claim 1 or 2, wherein: the excrement collecting device also comprises a second excrement sucking channel formed by a plurality of excrement pipes which are arranged closely, an excrement sucking port of the second excrement sucking channel is positioned at the bottom of the excrement ditch, and a water level meter is arranged in the excrement ditch below the excrement leaking plate (31), the controller (28) is connected with the water level meter and can receive and process liquid level information fed back by the water level meter, and when the water level meter in the excrement ditch senses that excrement exceeds a specified amount, the excrement sucking system is started immediately to suck excrement.
4. The pig farm waste treatment system of any one of claims 1-3, wherein: the surface of a convex part (14) of the liquid dung processing device is used as an overflow surface of liquid, the tops of all convex parts (14) on the same side of a liquid dung collecting groove (12) are positioned on the same inclined plane, and the included angle between the inclined plane and the horizontal plane is not more than 30 degrees.
5. The pig farm waste treatment system of claim 4, wherein: the upper part of the baffle (2) is connected with a two-dimensional moving mechanism, and the two-dimensional moving mechanism can drive the baffle (2) to lift and can also drive the baffle (2) to translate along the direction of the groove (13); the lower part of the baffle (2) is connected with a scrubbing piece (4), and the scrubbing piece (4) is matched with the liquid dung collecting tank (12) and the groove (13) so as to realize that the scrubbing piece (4) is driven by the two-dimensional moving mechanism to scrub along the wall surface of the liquid dung collecting tank (12), the wall surface of the groove (13) and the wall surface of the bulge part (14) along the wall surface.
6. The pig farm waste treatment system of claim 5, wherein: the two-dimensional moving mechanism comprises a transverse telescopic motor (3), a telescopic rod of the transverse telescopic motor (3) is connected with a frame (5), a vertical telescopic mechanism (6) is arranged on the frame (5), and a telescopic rod of the vertical telescopic mechanism (6) is connected with a baffle (2); the scrubbing piece (4) adopts scrubbing cotton; the height of the baffle (2) is not less than the depth of the liquid dung collecting groove (12), and after the scrubbing piece (4) is matched in the liquid dung collecting groove (12) and the groove (13), the baffle (2) and the scrubbing piece (4) are driven by a two-dimensional moving mechanism to move horizontally to scrub the groove wall.
7. The pig farm waste treatment system of claim 6, wherein: a corrugated plate with height difference is used as a groove (13) and a bulge (14) which are continuously arranged, the groove (13) and the bulge (14) are integrally formed, and the bottom surface of the corrugated plate is a plane.
8. A method for treating piggery waste using the system of any one of claims 3 to 7, characterized by the steps of:
step 1: the excrement newly discharged to the excrement leakage plate (31) by the pig is immediately sucked into an excrement collection pool (23) by adopting an excrement collection device, and/or: the excrement in the excrement ditch is sucked into an excrement collecting pool (23) by adopting an excrement collecting device;
step 2: after the step 1 is finished, adding a proper amount of water into the manure collecting pool (23) through a water supply system, adjusting the pH value through a pH adjusting system (34) and/or turning on an ultraviolet lamp (35), and stirring the manure in the manure collecting pool (23) through a stirrer (25);
and step 3: introducing the stirred excrement into a solid-liquid separation device (38) for solid-liquid separation;
and 4, step 4: and introducing the liquid dung after solid-liquid separation into a liquid dung treatment device for purification treatment.
9. The method of claim 8, wherein the pig farm waste is selected from the group consisting of:
the purification treatment step comprises:
step 4-1: the liquid dung from the solid-liquid separation device (38) enters a liquid dung collecting tank (12), and enters a clear liquid pool (37) after being subjected to progressive precipitation treatment and multiple overflow;
step 4-2: after T hours, removing the baffle (2), scrubbing the wall surfaces of the liquid manure collecting tank (12), the groove (13) and the protruding part (14), and resetting the baffle (2) after scrubbing is finished;
step 4-3: and after the step 4-2 is finished, repeating the step 4-1 and the step 2.
10. The waste treatment method according to claim 9, characterized in that:
the step 4-2 comprises the following steps: after T hours are carried out in the step 4-1, the baffle 2 is driven to move upwards to a proper height through the vertical telescopic mechanism 6, and the proper height meets the following requirements: the scrubbing piece 4 can be clamped into the liquid dung collecting tank 12 and the groove 13 after moving horizontally and is in pressure contact with the tank wall; then the baffle 2 is driven by the transverse telescopic motor 3 to move horizontally to enable the scrubbing piece 4 to scrub the wall of the tank; after the scrubbing is finished, the baffle 2 is driven to reset through the vertical telescopic mechanism 6 and the transverse telescopic motor 3 together.
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