CN114617208A - Aeration tank system for chicken manure biological treatment and treatment method thereof - Google Patents

Aeration tank system for chicken manure biological treatment and treatment method thereof Download PDF

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Publication number
CN114617208A
CN114617208A CN202210142704.7A CN202210142704A CN114617208A CN 114617208 A CN114617208 A CN 114617208A CN 202210142704 A CN202210142704 A CN 202210142704A CN 114617208 A CN114617208 A CN 114617208A
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aeration
feeding
feed
aeration tank
air
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CN114617208B (en
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朱光耀
于赵磊
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Fidelity Biotechnology Shanghai Co ltd
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Jiaboting Biotechnology Ningbo Co ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/90—Feeding-stuffs specially adapted for particular animals for insects, e.g. bees or silkworms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/20—Animal feeding-stuffs from material of animal origin
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A23K10/37—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87—Re-use of by-products of food processing for fodder production

Abstract

The invention relates to an aeration tank system for chicken manure biological treatment and a treatment method thereof. Specifically, the system disclosed by the invention is used for biologically treating the chicken manure, so that the biological treatment capacity of the hermetia illucens in the unit area of the chicken manure in the aeration tank can be effectively increased, the temperature and the humidity of feed in the tank can be effectively controlled, the yield of hermetia illucens larvae is improved, and the difficulty in mechanical separation of worm feed in the later treatment period is reduced.

Description

Aeration tank system for chicken manure biological treatment and treatment method thereof
Technical Field
The invention relates to the field of environment-friendly treatment of livestock and poultry manure, in particular to an aeration tank system for biologically treating chicken manure and a treatment method thereof.
Background
With the increase of livestock and poultry stocking amount in China, the discharge of livestock and poultry manure becomes one of the main pollution sources of rural environment. The traditional livestock and poultry manure treatment methods, such as methane anaerobic fermentation and aerobic fermentation composting, have the problems of long treatment period, low economic benefit, difficult treatment of waste residue and odor and the like.
The hermetia illucens is a rotten diptera insect and has the characteristics of wide feeding range, high conversion rate, high safety, high added value and the like, so that the hermetia illucens has wide application prospect in the technical field of organic solid waste biological treatment. The black soldier fly larvae are adopted to carry out biological treatment on the livestock and poultry manure, so that not only can the breeding of germs be inhibited and the odor and sewage discharge be reduced, but also high-quality organic fertilizer of the insect sand and insect protein products can be obtained. Compared with other livestock and poultry manure, the chicken manure is very rich in nutrition, and the content of crude protein can reach more than 20% of dry weight, so that the chicken manure is treated by the hermetia illucens larvae, and the higher larva yield and the higher-quality insect sand organic fertilizer can be obtained. However, the current cases of large-scale biological treatment of chicken manure by using hermetia illucens are rare, and the reason is mainly that the moisture content of fresh chicken manure is high (70-80%), if the thickness of breeding feed is high, anaerobic environment is easily formed in bottom feed, transformation of hermetia illucens larvae is not facilitated, and the difficulty in mechanical separation of later-stage insect feed is easily caused. If the auxiliary materials are added to regulate the humidity of the chicken manure, the black soldier fly larvae can generate high-temperature death or escape due to rapid heat generation caused by fermentation of the chicken manure. In order to avoid the problems of high temperature and high humidity, the feeding thickness of the black soldier fly biological treatment chicken manure and the mixed feed thereof is mostly controlled to be about 5-7cm at present, but the problem of low treatment efficiency per unit area is caused, and the application of the black soldier fly biological treatment technology in the large-scale treatment of the chicken manure is severely restricted.
Chinese patent publication No. CN108450710A discloses a chicken manure blending method suitable for hermetia illucens breeding. According to the method, energy feed components which account for 5% of the total mass and have particle sizes smaller than 0.05cm are added into fresh chicken manure, and the prepared chicken manure is prepared after stacking and fermentation for 10-15 hours. When the prepared chicken manure is used for breeding the hermetia illucens, the output of the hermetia illucens is obviously improved, and no irritant ammonia gas is generated. However, the breeding thickness of the prepared chicken manure is only 3-7cm, and the large-scale treatment requirement with higher space utilization rate requirement cannot be met.
Chinese patent publication No. CN107114328B discloses a black soldier fly breeding system, which comprises a breeding pond and a ceiling arranged above the breeding pond, wherein a water absorption layer, a heating device and a grid layer are sequentially arranged in the breeding pond from bottom to top, the heating device comprises a heating belt and a fixing frame for fixing the heating belt, compost is placed above the water absorption layer, the heating device is positioned in the compost, and the grid layer is positioned on the surface layer of the compost; a lifting device is arranged on the side edge of the culture pond and drives the heating device to lift; the top of the culture pond is provided with a heat preservation cover. Although the problem of temperature increase of the hermetia illucens compost in winter can be solved through the heating device, the temperature of the surface space of the compost can be adjusted, with the increase of the thickness of the compost, the heat at the middle lower part of the compost is difficult to be dissipated through the surface of the compost, only the surface temperature reduction mechanism of the compost is adopted, the effective control of the temperature and the humidity inside the easily fermented heat-producing materials such as chicken manure and the like is difficult to realize, the hermetia illucens larvae are difficult to be separated through a simple mechanical mechanism such as a rotary screen and a vibrating screen in the later period of cultivation, the hermetia illucens larvae can be driven to the surface of the compost for collection only through a heating mode, and the energy consumption cost is huge.
Disclosure of Invention
The invention aims to provide an aeration tank system for chicken manure biological treatment and a treatment method thereof, which not only can effectively increase the black soldier fly biological treatment amount of chicken manure in a unit area in the aeration tank, but also can realize effective control on the temperature and humidity of feed in the tank, improve the yield of black soldier fly larvae and reduce the difficulty of mechanical separation of worm feed in the later treatment period.
In a first aspect of the invention, an aeration tank system for chicken manure biological treatment is provided, which comprises an aeration system and an aeration tank body, wherein,
the aeration system comprises the following structures: the aeration fan, the air pipe heater, the air conveying pipe and the temperature controller;
the aeration tank body comprises the following structures: the wall and the bottom of the aeration tank;
in the aeration system, an air outlet of the aeration fan is connected with an air inlet of the air pipe heater, an air outlet of the air pipe heater is connected with an air inlet of the air conveying pipe, and the temperature controller is arranged on the outer side of the wall of the aeration tank;
in the aeration tank body, an aeration sewage discharge channel is arranged at the bottom of the aeration tank body, the near air end of the aeration sewage discharge channel is connected with the air outlet of the air conveying pipe, the far air end of the aeration sewage discharge channel is a blind end, the height of the aeration sewage discharge channel is gradually reduced from the near air end to the far air end, and an aeration plate covers the upper part of the aeration sewage discharge channel; the near-air end is provided with a drain pipe at the bottom of the aeration tank wall, the drain pipe penetrates through the aeration tank wall and is provided with an opening outside the aeration tank body, and the opening is provided with a drain valve.
In another preferred example, in the aeration system, the air delivery pipe is provided with an air control valve.
In another preferred example, the number of the air conveying pipes is m.
In another preferred example, the air conveying pipes are arranged in parallel.
In another preferred example, the air control valve is arranged on each air conveying pipe.
In another preferred embodiment, the temperature controller is connected with a temperature probe, the temperature controller controls the operation and the stop of the aeration fan based on parameter setting and temperature signal feedback of the temperature probe, and the temperature probe is arranged in the chicken manure to be treated when in use.
In another preferred embodiment, the width of the single aeration sewage drainage channel is 5-15% (preferably 8-12%, preferably 10%) of the width of the interior of the aeration tank body.
In another preferred example, the width of the single aeration sewage drainage channel is 10 cm.
In another preferred example, the number of the aeration sewage discharge ditches is n.
In another preferred example, m is n.
In another preferred embodiment, m and n are independently selected from the group consisting of: 1. 2, 3, 4, 5, 6, 7, 8, 9, 10.
In another preferred example, the aeration sewage discharge ditches are arranged in parallel.
In another preferred example, the distance between two adjacent aeration sewage discharge channels is 10-15%, preferably 12% of the width of the interior of the aeration tank body.
In another preferred example, the distance between two adjacent aeration sewage discharge ditches is 12 cm.
In another preferred example, the height of the single aeration sewage drainage channel at the near wind end is 20-40% (preferably 25-35%, preferably 30%) of the height of the interior of the aeration tank body; and/or
The height of the single aeration sewage discharge channel at the far wind end is 10-20% (preferably 14-18%, preferably 16%) of the height of the interior of the aeration tank body.
In another preferred example, the height of the aeration sewage discharge ditch at the near wind end is 15 cm.
In another preferred example, the height of the aeration sewage discharge ditch at the far wind end is 8 cm.
In another preferred embodiment, the height of the inside of the aeration tank body is 40-100cm, preferably 45-65cm, more preferably 45-55cm, and preferably 50 cm.
In another preferred embodiment, the width of the inside of the aeration tank body is 80-200cm, preferably 80-150cm, more preferably 80-120cm, and preferably 100 cm.
In another preferred embodiment, the length of the interior of the aeration tank body is 200-.
In another preferred example, the upper surface of the aeration plate is flush with the highest plane of the bottom of the aeration tank.
In another preferred embodiment, the aperture of the aeration plate is 0.05-0.5cm, preferably 0.06-0.3cm, more preferably 0.07-0.1cm, preferably 0.08 cm.
In another preferred embodiment, the aeration plate has an opening ratio of 20 to 50%, preferably 25 to 40%, more preferably 30 to 40%, and preferably 35%.
In another preferred example, the blow-off pipe is positioned below the air conveying pipe.
In another preferred embodiment, the diameter of the drain pipe is 1-3cm, preferably 2 cm.
In another preferred example, in the aeration tank body, a plate-bonding prevention layer is laid above the aeration plate and above the bottom of the aeration tank.
In another preferred example, the thickness of the anti-blocking layer is 3-6cm, preferably 5 cm.
In another preferred example, the anti-plate-bonding layer is laid by particles selected from the following group: crushed stone, clay particles, cobblestones, plastic, wood blocks, bamboo blocks, or combinations thereof.
In another preferred embodiment, the particle size of the particles is 2-3 cm.
In another preferred example, in the aeration tank body, a bacterium material layer is paved above the anti-plate-bonding layer.
In another preferred example, the thickness of the bacterial material layer is 1-3cm, preferably 1 cm.
In another preferred example, the bacterial layer is composed of filler and probiotic powder, wherein,
the filler is selected from the group consisting of: straw, rice bran, sawdust, or a combination thereof;
the probiotic powder is selected from the group consisting of: 1-1.5 parts of bacillus subtilis (with effective bacterial activity of 200 hundred million/g), 2.5-3 parts of lactobacillus plantarum (with effective bacterial activity of 30 hundred million/g) and 0.5-0.8 part of yeast (with effective bacterial activity of 50 hundred million/g).
In another preferred embodiment, the content of the probiotic powder is 0.01-0.1%, preferably 0.02-0.08%, preferably 0.05% by weight of the total weight of the bacterial material layer.
In a second aspect of the invention, a chicken manure biological treatment method is provided, wherein the method uses the aeration basin system of the first aspect of the invention to treat chicken manure.
In another preferred example, the method comprises the steps of:
1) providing pretreated chicken manure as a material to be fed, wherein the water content of the pretreated chicken manure is 66-75%;
2) in the first aspect of the invention, the system is provided with a plate-bonding prevention layer and a bacterium material layer;
3) the primary feeding is carried out on the bacterial layer above the aeration pollution discharge ditch to form a feed ridge, and the feeding amount is 30-50kg/m2；
4) When the environmental temperature is less than 16 ℃, starting an aeration fan and an air pipe heater, aerating hot air into the aeration tank body to increase the temperature of the feed to 28 ℃, and then closing the air pipe heater;
when the environmental temperature is higher than 16 ℃, the next step is directly carried out without heating;
5) detecting the temperature of the feed ridge by using a temperature controller, and controlling the temperature of the feed ridge to be 28-34 ℃ under the action of an aeration fan;
6) adding starter feed to feed hermetia illucens larvae and putting the starter feed between feed ridges;
7) adding the feed in batches in a uniform spreading mode;
8) optionally, after the feed is added, temporarily closing the aeration fan and opening the drain valve to discharge the sewage accumulated in the aeration drain ditch;
9) and on the 8 th day of insect feeding, closing the aeration fan, and screening the product obtained in the aeration tank by using a drum screen to obtain the insect sand and the black soldier fly larvae.
In another preferred example, the pretreated chicken manure comprises fresh chicken manure, nutritional auxiliary materials and humidity-adjusting auxiliary materials.
In another preferred embodiment, the nutritional supplement is selected from the group consisting of: wheat bran, soybean meal, puffed soybean meal, corn meal, or a combination thereof.
In another preferred embodiment, the humidity-controlling auxiliary material is selected from the group consisting of: straw powder, rice bran, wheat hull powder, or a combination thereof.
In another preferred example, in the step 3), the height of the feed ridge is 6-10 cm.
In another preferred example, the height of the open feed between the feed ridges after step 6) is 3-5 cm.
In another preferred embodiment, in step 7),
when the water content of the pretreated chicken manure is 66-70%, feeding for the first time on the 3 rd day of feeding the insects respectively by adopting a 2-time feeding mode, wherein the feeding amount is 60-80kg/m2(ii) a Feeding the feed for the second time at 5 days of feeding the insects, wherein the feeding amount is 40-60kg/m2；
When the water content of the pretreated chicken manure is 71-75%, feeding for the first time on the 3 rd day of feeding the insects respectively by adopting a 4-time feeding mode, wherein the feeding amount is 10-30kg/m2(ii) a Feeding the feed for the second time at 4 days of feeding the insects, wherein the feeding amount is 20-50kg/m2(ii) a Feeding the feed for the third time on the 5 th day of feeding the insects, wherein the feeding amount is 40-60kg/m2(ii) a In thatFeeding the feed for the fourth time in 7 days, wherein the feeding amount is 5-20kg/m2。
It is to be understood that within the scope of the present invention, the above-described features of the present invention and those specifically described below (e.g., in the examples) may be combined with each other to form new or preferred embodiments. Not to be reiterated herein, but to the extent of space.
Drawings
FIG. 1 is a general structural schematic diagram of an aeration tank system for chicken manure biological treatment according to the invention.
FIG. 2 is a schematic side sectional view of an aeration tank according to the present invention.
FIG. 3 is a schematic view of aeration tank bottom pretreatment and primary feeding according to the present invention.
FIG. 4 shows the surface temperature variation (mean. + -. SD) of different insect-feeding treatment days in winter.
FIG. 5 shows the surface temperature changes (mean + -SD) of the feeds in the aeration tank and the non-aeration tank in different insect feeding treatment days in summer.
In FIGS. 1-3: 1-an aeration fan, 2-an air pipe heater, 3-an air conveying pipe, 4-an air control valve, 5-a temperature controller, 6-an aeration tank wall, 7-an aeration tank bottom, 8-an aeration sewage drainage ditch, 9-an aeration plate, 10-a sewage drainage pipe, 11-a sewage drainage valve, 12-a plate-bonding prevention layer, 13-a bacterium material layer and 14-a feed ridge.
Detailed Description
The inventor conducts long-term and deep research, and unexpectedly prepares an aeration tank system by optimizing the structural design, the system can obviously improve the biological treatment capacity of the black soldier flies in a unit area of the chicken manure mixed feed, obviously improve the space utilization rate of the black soldier flies biological treatment technology in scale treatment of the chicken manure, and has excellent ecological and environment-friendly benefits; the system can obviously increase the yield of the hermetia illucens larvae, improve the efficiency of mechanical pest separation and has very obvious economic benefit; when the system is used for treating the chicken manure for a long time, the hardening problem is basically avoided, the aeration smoothness can be kept, and the material separation is convenient in the later period; the system has excellent temperature and humidity control performance. The method for treating the chicken manure by using the system has the advantages of high efficiency, low cost, environmental protection, low energy consumption and the like. On this basis, the inventors have completed the present invention.
The purpose of the invention is realized by the following technical scheme:
an aeration tank system for chicken manure biological treatment comprises an aeration system and an aeration tank body. The aeration system comprises an aeration fan, an air pipe heater, a temperature controller and an air conveying pipe. And the air outlet of the aeration fan is connected with the air inlet of the air pipe heater. The air outlet of the air pipe heater is connected with the air conveying pipe, the number of the air conveying pipes is 1 or more, the air conveying pipes are used for conveying air to the aeration tank body, an air control valve is installed at the air inlet end, and the air control valve can adjust or close the air supply amount of the air conveying pipes. The temperature controller is connected with a temperature sensor, can detect the temperature change of the feed and controls the start and stop of the aeration fan according to parameter setting.
The aeration tank body consists of an aeration tank wall and an aeration tank bottom, wherein 1 or more aeration sewage discharge channels which are arranged in parallel are arranged at the aeration tank bottom, the near-wind end of each aeration sewage discharge channel is connected with the air outlet of the air transmission pipe, and the other end of each aeration sewage discharge channel is a closed blind end. An aeration plate with holes is covered above the aeration sewage-discharging ditch. Aeration blowdown ditch bottom by nearly wind end to the cecum is ascending gradually, can make the area of ventilation face reduce gradually, thereby lets nearly wind end with the wind pressure of cecum keeps being approximate, in addition, also can with the sewage of aeration board top fodder seepage collects through the inclined plane nearly wind end. And a drain pipe is arranged at the bottom of the air-near end, penetrates through the wall of the aeration tank, is opened outside the aeration tank, and is provided with a drain valve in front of the opening. The blowdown valve is kept closed when the aeration fan is started, and is opened when the aeration fan is stopped, so that the sewage accumulated in the aeration blowdown ditch can be discharged out of the aeration tank body.
Preferably, the aeration fan is a centrifugal fan, a vortex fan or a roots fan.
Preferably, the heating element of the air pipe heater is a fin type electric heating tube or a PTC corrugated heating element, and has a temperature control function, so that the air temperature of the air outlet can be controlled below 60 ℃.
Preferably, the material of the air delivery pipe can be one or more of plastic, metal and rubber.
Preferably, the width of the aeration sewage discharge ditch is 5-15cm, and the interval between two adjacent ditches is 10-50 cm.
Preferably, the aeration plate can be made of one or more of metal, plastic, resin, cement and glass fiber reinforced plastic, the aperture of the open pore of the aeration plate is 0.5-1.0mm, and the aperture ratio is more than 30%.
Preferably, the aeration tank wall is vertical to the aeration tank bottom, and the height is 25-50 cm.
According to another aspect of the present invention, there is provided a processing method comprising the steps of:
1) pretreatment of chicken manure
Collecting fresh chicken manure produced in the same day, adding nutritional auxiliary materials and humidity-adjusting auxiliary materials, and preparing the chicken manure into mixed feed with the water content of 68-75%.
2) Pretreatment of aeration tank bottom
A layer of anti-hardening layer composed of particles is paved at the bottom of the aeration tank, and then a layer of bacterium material is uniformly paved above the anti-hardening layer.
3) Initial feeding
The primary feeding amount is controlled at 30-50kg/m according to the feeding amount of the young larva2. When the materials are fed for the first time, the feed is accumulated above the aeration plate of the aeration sewage-discharging ditch to form a feed ridge.
4) Feed temperature raising
When the environmental temperature is lower than 16 ℃, the feed in the aeration tank is heated firstly, so that the low-age hermetia illucens larvae are prevented from being damaged by the excessively low temperature of the feed, and meanwhile, the process of microbial fermentation and heat production can be promoted. When the temperature is increased, the air pipe heater is manually started first, and then the aeration fan is started. After being heated by the air pipe heater, the air is aerated into the feed through the air conveying pipe group and the aeration sewage discharge ditch. When the temperature of the feed is higher than 28 ℃, the power supply of the air pipe heater is turned off, and then the temperature of the start and stop of the aeration fan is set on the temperature controller. The summer ambient temperature is higher than 16 ℃, and the feed temperature is higher, so the step is not needed.
5) Temperature control arrangement
The temperature controller is provided with a temperature range for starting the aeration fan of 31-35 ℃ and a temperature range for stopping the aeration fan of 25-30 ℃. Then a temperature sensor on the temperature controller is inserted into the middle position of the feed ridge, and the depth is 3-5 cm.
6) Larva delivery
4-day black soldier fly larvae (each weight is 7-10mg) bred by the starter are prepared in advance, and 1.5-4.0kg of four-day larvae are thrown into each square meter of the treatment area for feeding. When throwing the worm, together throw the larva into the position between the fodder ridge with remaining opening material, guarantee that the bulk thickness of remaining opening material >3 cm.
7) Feed additive
In order to increase the temperature and humidity control efficiency in the aeration tank, reduce the auxiliary material addition simultaneously, according to the fodder moisture content difference, formulate different fodder and add the strategy:
the water content of the feed is between 68 and 70 percent, and a 2-time feeding strategy is adopted: feeding insects for the first time on the 3 rd day of feeding treatment, wherein the feeding amount is 60-80kg/m2(ii) a Feeding 2 nd time at 5 th day of insect feeding treatment period with feeding amount of 50-60kg/m2。
The water content of the feed is in an interval of 71-75%, and a 4-time feeding strategy is adopted: feeding insects for the first time on the 3 rd day of feeding treatment, wherein the feeding amount is 10-20kg/m2(ii) a Feeding insects for the 2 nd time on the 4 th day of feeding treatment, wherein the feeding amount is 40-50kg/m2(ii) a Feeding 3 times on 5 th day of feeding treatment, wherein the feeding amount is 40-50 kg; feeding the insects for the 4 th time on the 7 th day of the insect feeding treatment, wherein the feeding amount is 10-20kg/m2。
8) Discharge of sewage
After the feed is fed for the 2 nd time, the aeration fan is closed for a short time, the blow-off valve of the blow-off pipe is opened, and the sewage accumulated at the air inlet end of the aeration blow-off ditch is discharged for one time. Along with the reduction of the water content of the bottom layer feed, the sewage generated by subsequent feeding does not leak downwards to the aeration sewage disposal ditch any more, and the step can be omitted subsequently.
9) Separation of insect material
And (5) on the 8 th day of insect feeding treatment, separating insect materials by adopting a drum screen. The separated hermetia illucens larvae are frozen or dried and then serve as protein feed products to be sold. The separated insect sand can be used as a high-quality bio-organic fertilizer for sale.
Preferably, in the step 1), the nutritional auxiliary materials are one or more of wheat bran, soybean meal, puffed soybean meal and corn flour, the particle size is less than 0.2cm, and the addition amount is 2-5% of the weight of the fresh chicken manure. The humidifying auxiliary materials are 1 or more of straw powder, rice bran and wheat husk powder, the particle size is less than 0.2cm, and the adding amount is 3-10% of the weight of the fresh chicken manure.
Preferably, in the step 2), the thickness of the anti-hardening layer is 3-6cm, the formed particles are one or more of crushed stone, clay particles, cobblestones, plastics, wood blocks and bamboo blocks, the width of the particles is more than 0.8cm, and the length of the particles is more than 1.6 cm;
preferably, in the step 2), the thickness of the bacterial material layer is 1-3cm, the bacterial material layer is composed of a filler and probiotic powder, and the content of the probiotic powder in the bacterial material layer is 0.01-0.05% by weight. The filler is one of straw, rice bran and sawdust, and the particle size is less than 0.2 cm. The probiotic powder comprises, by weight, 1-1.5 parts of bacillus subtilis (with effective bacterial activity of 200 hundred million/g), 2.5-3 parts of lactobacillus plantarum (with effective bacterial activity of 30 hundred million/g) and 0.5-0.8 part of yeast (with effective bacterial activity of 50 hundred million/g).
Preferably, in the step 3), the base width of the feed ridge during the primary feeding is preferably an aeration plate covering the aeration sewage discharge ditch, and the ridge height is 5-8 cm.
Preferably, in step 9), the drum screen is a 3-grade drum screen, the aperture of the 1 st-grade mesh screen is 2-3mm, and the length is more than 1 m; the aperture of the 2 nd stage mesh screen is 5-6mm, and the length is more than 1 m; the aperture of the 3 rd stage mesh screen is 8-9mm, and the length is more than 1 m.
Compared with the prior art, the invention has the following main advantages:
1. the invention can improve the biological treatment capacity of the hermetia illucens per unit area of the chicken manure mixed feed to 190kg/m within 8 days2(the thickness is about 18-22cm), the space utilization rate of the black soldier fly biological treatment technology in scale treatment of the chicken manure is greatly improved, and the ecological environmental protection benefit is very obvious.
2. The aeration tank system and the treatment method thereof not only can better control the temperature of the feed in the aeration tank, but also can greatly reduce the moisture content of the worm sand at the later treatment stage, thereby increasing the output of the black soldier fly larvae, improving the efficiency of mechanical insect separation and having very obvious economic benefit.
3. According to the invention, the anti-caking layer is laid on the bottom of the aeration tank, so that the problem that the chicken manure mixed feed is easy to harden under a long-term aeration condition is solved, and meanwhile, the smooth aeration is ensured. In addition, the anti-plate-bonding layer is made of granular materials, and the size of the anti-plate-bonding layer can be selected and controlled according to the aperture of the screen mesh of the drum screen, so that the anti-plate-bonding layer can be separated and recovered through the drum screen, can be repeatedly utilized, and is very low in use cost.
4. The aeration sewage discharge ditch design of the invention is beneficial to ensuring the uniformity of aeration quantity of the whole aeration tank, and can discharge redundant sewage in the aeration tank in time, thereby greatly improving the control efficiency and consistency of temperature and humidity in the aeration tank.
5. According to the invention, the bacterial material layer is laid above the anti-plate-caking layer, so that probiotics can be gradually propagated from the bottom layer culture material to the upper layer culture material, and the problem of too fast heat production caused by directly mixing the probiotics into the feed is avoided. In addition, the bacterial material layer is laid on the bottom layer, the probiotics can be fully utilized to carry out biodegradation on the sewage leaked by the upper layer feed, and the generation of anaerobic fermentation odor can be inhibited while the sewage discharge amount is reduced.
6. According to the ridging method adopted by the primary feeding, residual larva opening materials are utilized to form a transition environment suitable for growth of low-age larvae, the problem that the death rate of the low-age hermetia illucens larvae is high due to weak stress resistance is solved, meanwhile, the temperature increase and aeration efficiency of the primary feed feeding is improved, and energy consumption is greatly saved.
7. According to the invention, different feeding strategies are set according to the humidity of the material, so that the effects of controlling temperature and humidity are realized, and the advantages of avoiding controlling the water content of the chicken manure mixed feed by simply adding auxiliary materials, greatly saving the addition amount of the auxiliary materials and saving the cost are achieved. In addition, the quality of the insect sand organic fertilizer can be prevented from being reduced due to the excessive addition of auxiliary materials.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Experimental procedures without specific conditions noted in the following examples, generally according to conventional conditions or according to conditions recommended by the manufacturers. Unless otherwise indicated, percentages and parts are by weight.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention. The preferred embodiments and materials described herein are intended to be exemplary only.
Example 1:
an aeration tank system for chicken manure biological treatment, as shown in figure 1, comprises an aeration system and an aeration tank body, wherein the aeration system comprises: aeration fan-1, air pipe heater-2, air delivery pipe-3 and temperature controller-5. The air outlet of the aeration fan-1 is connected with the air inlet of the air pipe heater-2, and the air outlet of the air pipe heater-2 is connected with the air inlet of the air conveying pipe-3. In this embodiment, the aeration fan-1 is a 750w centrifugal fan, the heating elements of the air pipe heater-2 are finned electric heating tubes, the air delivery pipes-3 are pvc pipes with a diameter of 7.5cm and are arranged in parallel, 4 air control valves-4 are installed on each air delivery pipe-3, and the air delivery quantity of the air delivery pipe-4 can be adjusted. The temperature controller-5 is connected with a temperature probe, and can control the operation and stop of the aeration fan-1 through parameter setting and temperature signal feedback of the temperature probe.
The aeration tank body consists of an aeration tank wall-6 and an aeration tank bottom-7, an aeration sewage discharge channel-8 is arranged below the aeration tank bottom-7, the near wind end of the aeration sewage discharge channel-8 is connected with the wind outlet of the wind transmission pipe-3, and the far wind end is a blind end. In this embodiment, the aeration tank wall-6 and the aeration tank bottom-7 are both made of cement and bricks, and the length, width and height of the inner space of the aeration tank are 3X 1X 0.5 m. The number of the aeration sewage discharge grooves-8 is 4, the width of the grooves is 10cm, the grooves are longitudinally arranged in parallel, and the distance between two adjacent aeration sewage discharge grooves-8 is 12 cm. An aeration cover plate-9 is covered above the aeration sewage-discharge ditch-8, in the embodiment, the aeration plate-9 is a stainless steel perforated plate, the aperture is 0.8mm, the aperture ratio is 35%, the thickness is 1-3mm, and the aeration plate-9 is basically flush with the bottom-7 of the aeration tank. The height of the near wind end of the aeration sewage-discharging ditch-8 is 15cm, and the height of the far wind end is 8cm, so that a slope surface inclined towards the near wind end is formed at the bottom of the ditch. The bottom of the aeration sewage draining ditch-8 near the wind end is provided with a sewage draining pipe-10 (the diameter is 2cm), the sewage draining pipe-10 passes through the wall-6 of the aeration tank, is opened outside the aeration tank body and is provided with a sewage draining valve-11.
In a layer chicken breeding factory of Shunfeng livestock and poultry farming limited company, Yuyao, Zhejiang on day 26-12 month 3 in 2020, the aeration tank system is adopted to treat the chicken manure, the average maximum temperature in the implementation period is 11.5 ℃ per day, and the average minimum temperature in the day is 7.5 ℃, and the treatment method comprises the following steps:
1) chicken manure pretreatment: fresh egg-chicken manure (supplied by Shunheng livestock and poultry farming Co., Ltd., Yuyao) was collected, and the fluctuation range of the water content during the implementation period was 72-74% as measured by a halogen moisture meter. 2kg of wheat bran and 5kg of rice straw powder are added into every 100kg of fresh chicken manure and mixed to obtain mixed feed with the water content of 68-70% for later use.
2) Pretreatment of an aeration tank: before feeding, clay grains with the grain diameter of 2-3cm are uniformly paved at the bottom 7 of the aeration tank to form a 5 cm-thick anti-slab-knot layer-12. Then, a layer of mushroom material-13 with the thickness of about 1cm is laid on the upper part of the bag. The bacterial material layer-13 is composed of filler and probiotic powder, wherein the filler is rice straw powder with particle size less than 0.2 cm. The probiotic powder accounts for 0.05% of the bacterial layer by mass, and comprises 1.5 parts of bacillus subtilis, 3 parts of lactobacillus plantarum and 0.5 part of yeast by weight.
3) Primary feeding: the primary feed amount of the feed is 50kg/m2And when the feed is fed, the feed is stacked above the aeration and pollution discharge ditch to form a feed ridge-14, and the height of the ridge is about 8 cm.
4) Heating the feed: because the environmental temperature is less than 16 ℃ during the implementation, the temperature of the feed which is put in for the first time needs to be increased. And (3) sequentially starting the aeration fan-1 and the air pipe heater-2, and aerating the hot air into the feed in the aeration tank. When the temperature of the feed ridge-14 is measured to be increased to 28 ℃, the air pipe heater-2 is closed.
5) Temperature control setting: then a temperature sensor of a temperature controller-5 is inserted into the middle position of the feed ridge-14, and the depth is about 3cm (after the first feeding, the depth is adjusted to 5 cm). Because the ambient temperature is low, the start temperature of the aeration fan-1 is set to 32 ℃, and the stop temperature of the aeration fan is set to 28 ℃.
6) Larva throwing: taking out 10.5kg of 4-day-old Hermetia illucens larvae which are fed with starter feed in advance (estimated according to weight ratio of insect feed), and feeding the larvae and residual starter feed into feed ridges-14, wherein the thickness of the residual starter feed in the feed ridges-14 is not less than 3 cm.
7) Adding a feed: as the feed used in the embodiment has the water content of 66-70%, 2 times of feeding strategies are adopted, namely feeding insects for the 3 rd day, and feeding for the first time, wherein the feeding amount is 60kg/m2. Feeding the insects for the second time on the 5 th day of the insect feeding treatment, wherein the feeding amount is 50kg/m2. The two feeding modes are uniformly spread.
8) And (3) sewage discharge: after the feed is fed for the 2 nd time, the aeration fan-1 is closed for a short time, the blow-off valve-11 of the blow-off pipe is opened, and the sewage accumulated at the air inlet end of the aeration blow-off ditch is discharged for the first time.
9) Separation of worm materials: and (4) on the 8 th day of the insect throwing treatment, turning off a power supply of the aeration fan-1, and separating the insect sand and the black soldier fly larvae in the aeration tank by using a rotary screen. The drum screen is a 3-grade drum screen, and the aperture of a 1-grade mesh screen is 3 mm; the aperture of the 2 nd stage mesh screen is 6 mm; the aperture of the 3 rd stage mesh screen is 8mm, and the length of the drum of each stage of drum screen is 2 m. Larvae from stage 2 and 3 trommel screens were collected separately.
Example 1 in the implementation process, 3 positions between two middle aeration sewage discharge ditches are randomly selected at 12 am every day, and the temperature of 5cm below the surface of the feed is measured. Before separation of the insect material, about 3 parts of 100g of insect sand is randomly selected from each pool, and after larvae in the insect sand are removed, the water content of the insect sand is measured by a halogen moisture meter. After worm materials are separated, weighing the hermetia illucens larvae collected at the feed openings of the 2-grade and 3-grade roller screens, accurately extracting 500g of the larvae, washing and airing the larvae with clear water, weighing the larvae again, and taking the obtained weight as the net weight W of the larvae, wherein the impurity rate is obtained by (500-W)/500. Further, 90 of the washed larvae were randomly selected and weighed, and the average weight of the harvested larvae was calculated. To calculate the energy consumption during the implementation of the examples, the power consumption of the aeration fan and the ducted heater was recorded throughout the duration of the examples using a power monitor.
The result shows that the highest temperature of the feed in the aeration tank occurs on the 2 nd day of the feeding treatment, which is only slightly higher than 40 ℃ (figure 4), the feed temperature fluctuates between 25 ℃ and 35 ℃ in the rest time, the activity of the black soldier fly larvae is good, and the escape phenomenon is not seen. The water content of residual worm sand in the aeration tank is measured to be 56% before worm material separation, 48.2kg of larvae are obtained by adopting a drum sieve for separation, the impurity rate is estimated to be 8% by sampling inspection, and therefore the actual yield of the larvae is estimated to be 44.3 kg. The average weight of the larvae was 84mg (n-90). In addition, the power consumption of the aeration fan and the air pipe heater is only 18.6 degrees in the whole implementation process of the example 1. According to the agricultural electricity consumption of 0.69 yuan/meter, the electricity consumption cost does not exceed 27 yuan for each ton of the chicken manure mixed feed processed in winter.
The results of example 1 show that the aeration basin system and the treatment method thereof provided by the invention can meet the production requirement of treating the chicken manure by the hermetia illucens in winter under the condition of not integrally heating the production environment, and the treatment capacity of the mixed feed of the chicken manure reaches 160kg/m2(chicken manure accounts for 94% by weight). In addition, embodiment 1 also proves, through the cooperation of aeration fan and temperature controller, in addition reasonable reinforced strategy, even under the low temperature environment, also can realize the economic control to the fodder humiture to make the mechanical separation efficiency of handling later stage heisui river horsefly larva and worm sand be higher than 90%.
Example 2:
the implementation time is 2021, 6 months and 5-12 days, the daily average maximum temperature in the test period is 31.5 ℃, and the daily average minimum temperature is 21.4 ℃. The implementation place is layer chicken cultivation factory of Shufeng livestock and poultry cultivation Limited company of Shujiang Yuyao, Zhejiang. In this example, two cement treatment tanks A and B having a length, width and height of 3X 1X 0.5m were provided, wherein the treatment tank A was an aeration tank, and the arrangement and structure were exactly the same as those of the aeration tank of example 1. The tank B is a non-aeration tank without an aeration system, and the bottom of the tank is a common flat cement bottom, which is used as a control in the embodiment.
The specific treatment steps of the pool A are as follows:
1) chicken manure pretreatment: fresh chicken manure (supplied by Shunfeng livestock and poultry farming Co., Ltd., Yuyao, Zhejiang) was collected, and the fluctuation range of the water content during the implementation period was measured to be 78-80% by a halogen moisture meter. 3kg of wheat bran and 7kg of rice straw powder are added into every 100kg of fresh chicken manure and mixed to obtain the feed with the water content of 72-74% for later use.
2) Pretreatment of an aeration tank: the pretreatment procedure was as in example 1.
3) Feeding materials for the first time: the primary feeding amount is 40kg/m2The feeding method is the same as that of example 1.
4) Heating the feed: because the initial feed temperature is higher, the temperature of the feed put in for the first time does not need to be increased.
5) Controlling the temperature: the probe of the temperature controller temperature sensor is inserted into the feed ridge-14 about 3cm below the middle surface, then the start temperature of the aeration fan-1 is set to 34 ℃, and the stop temperature is set to 30 ℃.
6) Larva throwing: 6kg of 4-day-old hermetia illucens larvae (estimated according to sampling of insect feed weight ratio) which are cultured by using an opening feed in advance are taken out for insect feeding. When feeding insects, directly feeding 4-day-old larvae and residual opening materials into the positions between the feed ridges and 14, wherein the thickness of the residual opening materials between the feed ridges and 14 is not less than 3 cm.
7) Adding a feed: as the water content of the feed used in the embodiment is in an interval of 71-75%, a strategy of feeding for 4 times is adopted: feeding insects for the 1 st time on the 3 rd day of insect feeding treatment, wherein the feeding amount is 20kg/m2(ii) a Feeding the insects for the 2 nd time on the 4 th day of the insect feeding treatment, wherein the feeding amount is 30kg/m2(ii) a Feeding 3 rd times on 5 th day of insect feeding treatment with a feeding amount of 50kg/m2(ii) a Feeding 4 th time on 7 th day of insect feeding treatment with feeding amount of 10kg/m2. The feeding modes are all uniform spreading.
8) And (3) sewage discharge: after the feed is fed for the 2 nd time, the aeration fan-1 is closed for a short time, the blow-off valve-11 of the blow-off pipe is opened, and the sewage accumulated at the air inlet end of the aeration blow-off ditch is discharged for the first time.
9) Separation of worm materials: on day 8 of the insect feeding treatment, the power supply of the aeration fan of the aeration tank was turned off, and the insect material was separated by the same drum screen as in example 1. Larvae separated by stage 2 and 3 trommel were collected.
The treatment steps of the pool B are as follows:
1) chicken manure pretreatment: the chicken manure is fresh chicken manure (with the water content of 78-80%) which is prepared in the same batch as the pool A, and 15kg of rice straw powder is added into every 100kg of fresh chicken manure to adjust the humidity of the chicken manure, so that the feed with the water content of 69-70% is obtained.
2) Feeding materials for the first time: the initial feeding amount is the same as that of the tank A, and the feeding mode is uniform and flat.
3) Larva throwing: the breeding conditions and the insect feeding amount of the larvae of 4 days old are the same as those of the pond A, and the insects are uniformly spread on the surface of the feed.
4) Adding a feed: the same feeding strategy as the tank A is adopted, and the feeding mode is also uniform spreading.
5) Separation of worm materials: and (4) on the 8 th day of insect feeding treatment, sampling and separating insect materials by using the same drum screen as the tank A.
Throughout the implementation of example 2, the data acquisition and recording of pools A and B was the same as in example 1.
The results show that during the whole process of example 2, pool a produced slightly faster heat than pool B due to sufficient aeration and oxygen supply, and the ambient temperature was higher, so the maximum temperature reached 45.5 ℃ on day 2 of treatment (fig. 5), but the temperature subsequently dropped and was maintained between 30-35 ℃, so the black soldier fly larvae in pool a were moving under the feed surface for the rest of the time except for the phenomenon of aggregation on the surface on day 2 of the insect-throwing treatment, and grew well, and the feed was consumed more thoroughly. The temperature of the pool B is controlled by no aeration, the temperature increasing speed is slightly slow, but the temperature increases day by day, reaches 55.6 ℃ on the 5 th treatment day, and then decreases, but is above 44 ℃, so that the hermetia illucens larvae in the pool B die from the 4 th treatment day, only a small amount of larvae survive in a low-temperature area close to the pool wall, and stay on the surface of the feed for activity, and the feed consumption is incomplete.
Before separation of the worm materials, the feed in the pool A is completely consumed, the average water content of the worm sand is measured to be 52%, 65.8kg of larvae are obtained by adopting a drum screen for separation, and the impurity rate is found to be 6% by spot inspection, so that the net larva yield is estimated to be 61.9 kg. In addition, the average weight of harvested larvae is 96mg (n is 90), the power consumption of an aeration fan is 14.5 degrees, the power consumption is 0.69 yuan per meter according to the agricultural power, and the power consumption cost is less than 21 yuan for each ton of chicken manure mixed feed processed in summer.
Before separation of the insect feed, the feed in the pool B has high residual quantity due to death of a large number of hermetia illucens larvae, and the water content of the residual feed and the insect sand is measured to be 65%. When the roller screen is adopted for separating the insect material, 25.4kg of the insect material mixture is obtained by separation, and the impurity rate is up to 20 percent by spot inspection, so the net larva yield is estimated to be 20.3 kg. Furthermore, the average weight of the harvested larvae was only 69mg (n-90).
The results of example 2 show that under the high-temperature condition in summer, the black soldier fly treatment capacity of the feed per unit area can be improved to 150kg/m by adopting the aeration system and the treatment method thereof2(the chicken manure accounts for 91 percent by weight), and the temperature of the feed in the aeration tank can be maintained in a proper interval, and higher output of the hermetia illucens larvae can be obtained. In addition, by the feeding method designed by the invention, the water content of the insect sand in the aeration tank can be controlled to be about 50%, and the insect material separation efficiency of the drum screen is greatly improved. On the contrary, without the aeration tank system and the treatment method, even if a multiple feeding strategy is adopted, the damage of the high-temperature fermentation of the chicken manure to the hermetia illucens larvae cannot be avoided, and the water content of the residual feed and the insect sand cannot be reduced, so that the mechanical separation efficiency of the insect feed is very low.
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications of the present invention can be made by those skilled in the art after reading the above teachings of the present invention, and these equivalents also fall within the scope of the present invention as defined by the appended claims.

Claims (10)

1. An aeration tank system for chicken manure biological treatment, which is characterized by comprising an aeration system and an aeration tank body, wherein,
the aeration system comprises the following structures: aeration fan, air pipe heater, air conveying pipe and temperature controller;
the aeration tank body comprises the following structures: the wall and the bottom of the aeration tank;
in the aeration system, an air outlet of the aeration fan is connected with an air inlet of the air pipe heater, an air outlet of the air pipe heater is connected with an air inlet of the air conveying pipe, and the temperature controller is arranged on the outer side of the wall of the aeration tank;
in the aeration tank body, an aeration sewage discharge channel is arranged at the bottom of the aeration tank body, the near air end of the aeration sewage discharge channel is connected with the air outlet of the air conveying pipe, the far air end of the aeration sewage discharge channel is a blind end, the height of the aeration sewage discharge channel is gradually reduced from the near air end to the far air end, and an aeration plate covers the upper part of the aeration sewage discharge channel; the near-air end is provided with a drain pipe at the bottom of the aeration tank wall, the drain pipe penetrates through the aeration tank wall and is provided with an opening outside the aeration tank body, and the opening is provided with a drain valve.
2. The aeration system of claim 1, wherein the air delivery pipe is provided with an air control valve.
3. The aeration basin system of claim 1, wherein the temperature controller is connected to a temperature probe, the temperature controller controls the operation and stop of the aeration fan based on parameter setting and temperature signal feedback of the temperature probe, and the temperature probe is arranged in the chicken manure to be treated when in use.
4. An aeration basin system according to claim 1, wherein the width of the single aeration sewage drainage channel is 5-15% (preferably 8-12%, preferably 10%) of the width of the interior of the aeration basin body.
5. An aeration basin system according to claim 1, wherein the height of a single aeration sewage drain at the near air end is 20-40% (preferably 25-35%, preferably 30%) of the height of the interior of the aeration basin body; and/or
The height of the single aeration sewage discharge channel at the far wind end is 10-20% (preferably 14-18%, preferably 16%) of the height of the interior of the aeration tank body.
6. The aeration tank system of claim 1, wherein a plate-bonding prevention layer is laid above the aeration plate and above the bottom of the aeration tank in the aeration tank body.
7. The aeration tank system of claim 6, wherein a layer of bacteria is laid over the anti-caking layer in the aeration tank body.
8. A chicken manure biological treatment method, characterized in that the method uses the aeration basin system of claim 1 to treat chicken manure.
9. The method as recited in claim 8, wherein said method comprises the steps of:
1) providing pretreated chicken manure as a material to be fed, wherein the water content of the pretreated chicken manure is 66-75%;
2) arranging a plate-bonding prevention layer and a bacterium layer in the system of claim 1;
3) the first feeding is carried out on the bacterial layer above the aeration sewage-discharging ditch to form a feed ridge, and the feeding amount is 30-50kg/m2；
4) When the environmental temperature is less than 16 ℃, starting an aeration fan and an air pipe heater, aerating hot air into the aeration tank body to increase the temperature of the feed to 28 ℃, and then closing the air pipe heater;
when the ambient temperature is higher than 16 ℃, the next step is directly carried out without heating;
5) detecting the temperature of the feed ridge by using a temperature controller, and controlling the temperature of the feed ridge to be 28-34 ℃ under the action of an aeration fan;
6) adding starter feed to feed hermetia illucens larvae and putting the starter feed between feed ridges;
7) adding the feed in batches in a uniform spreading mode;
8) optionally, after the feed is added, temporarily closing the aeration fan and opening the drain valve to discharge the sewage accumulated in the aeration drain ditch;
9) and on the 8 th day of insect feeding, closing the aeration fan, and screening the product obtained in the aeration tank by using a drum screen to obtain the insect sand and the black soldier fly larvae.
10. The method of claim 9, wherein, in step 7),
when the water content of the pretreated chicken manure is 66-70%, respectively feeding for the first time on the 3 rd day of feeding the insects by adopting a 2-time feeding mode, wherein the feeding amount is 60-80kg/m2(ii) a Feeding the feed for the second time at 5 days of feeding the insects, wherein the feeding amount is 40-60kg/m2；
When the water content of the pretreated chicken manure is 71-75%, feeding for the first time on the 3 rd day of feeding the insects respectively by adopting a 4-time feeding mode, wherein the feeding amount is 10-30kg/m2(ii) a Feeding the feed for the second time on the 4 th day of feeding the insects, wherein the feeding amount is 20-50kg/m2(ii) a Feeding the feed for the third time on the 5 th day of feeding the insects, wherein the feeding amount is 40-60kg/m2(ii) a Feeding the feed for the fourth time at 7 days of feeding the insects, wherein the feeding amount is 5-20kg/m2。
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Publication number Priority date Publication date Assignee Title
JPH10192875A (en) * 1996-12-27 1998-07-28 Sato Doro Kk Wastewater purification tank
CN204535335U (en) * 2015-01-23 2015-08-05 迈安德集团有限公司 A kind of heating material dehumidification system
CN205213900U (en) * 2015-12-03 2016-05-11 厦门金益海生物科技有限公司 Fairy shrimp hatching pond
CN111631193A (en) * 2020-06-28 2020-09-08 江苏省农业科学院 Automatic device for realizing rapid reduction and drying treatment of livestock and poultry feces by utilizing hermetia illucens and application
CN112970628A (en) * 2021-01-14 2021-06-18 河南农业大学 Ecological cycle chicken raising room for black soldier fly and chicken combined breeding and application thereof
CN113142127A (en) * 2021-01-14 2021-07-23 河南农业大学 Method for constructing multi-dimensional breeding system in henhouse by utilizing hermetia illucens and symbiotic bacteria thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10192875A (en) * 1996-12-27 1998-07-28 Sato Doro Kk Wastewater purification tank
CN204535335U (en) * 2015-01-23 2015-08-05 迈安德集团有限公司 A kind of heating material dehumidification system
CN205213900U (en) * 2015-12-03 2016-05-11 厦门金益海生物科技有限公司 Fairy shrimp hatching pond
CN111631193A (en) * 2020-06-28 2020-09-08 江苏省农业科学院 Automatic device for realizing rapid reduction and drying treatment of livestock and poultry feces by utilizing hermetia illucens and application
CN112970628A (en) * 2021-01-14 2021-06-18 河南农业大学 Ecological cycle chicken raising room for black soldier fly and chicken combined breeding and application thereof
CN113142127A (en) * 2021-01-14 2021-07-23 河南农业大学 Method for constructing multi-dimensional breeding system in henhouse by utilizing hermetia illucens and symbiotic bacteria thereof

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