CN112243956A - Method for treating perishable landfill leachate by using hermetia illucens - Google Patents
Method for treating perishable landfill leachate by using hermetia illucens Download PDFInfo
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- CN112243956A CN112243956A CN202011050652.8A CN202011050652A CN112243956A CN 112243956 A CN112243956 A CN 112243956A CN 202011050652 A CN202011050652 A CN 202011050652A CN 112243956 A CN112243956 A CN 112243956A
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 64
- 241000709785 Hermetia illucens Species 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000000855 fermentation Methods 0.000 claims description 30
- 230000004151 fermentation Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 20
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 12
- 241000193744 Bacillus amyloliquefaciens Species 0.000 claims description 8
- 244000063299 Bacillus subtilis Species 0.000 claims description 8
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 claims description 8
- 238000011081 inoculation Methods 0.000 claims description 8
- 235000014655 lactic acid Nutrition 0.000 claims description 8
- 239000004310 lactic acid Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 240000007594 Oryza sativa Species 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 4
- 230000037396 body weight Effects 0.000 claims description 4
- 238000010411 cooking Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 235000015099 wheat brans Nutrition 0.000 claims description 4
- 241001481656 Stratiomyidae Species 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 230000001877 deodorizing effect Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 5
- 241000255632 Tabanus atratus Species 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 208000028659 discharge Diseases 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 3
- 238000011534 incubation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/10—Animal feeding-stuffs obtained by microbiological or biochemical processes
- A23K10/12—Animal feeding-stuffs obtained by microbiological or biochemical processes by fermentation of natural products, e.g. of vegetable material, animal waste material or biomass
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/10—Animal feeding-stuffs obtained by microbiological or biochemical processes
- A23K10/16—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions
- A23K10/18—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions of live microorganisms
-
- 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
-
- 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
- A23K10/38—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 from distillers' or brewers' waste
-
- 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
-
- 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 discloses a method for treating perishable landfill leachate by using hermetia illucens, which comprises the following steps of: step 1, preparing leachate feed by using perishable landfill leachate; and 2, treating the leachate feed with hermetia illucens. Through making the perishable landfill leachate into filtration liquid feed earlier, filtration liquid feed is handled to reuse heisui river horsefly, not only need not carry out the advanced treatment to perishable landfill leachate, saves investment and energy consumption, can all retrieval and utilization in addition handle perishable landfill leachate, realizes the zero release of filtration liquid. The method has the advantages of low investment and low operating cost, and is a treatment method capable of realizing zero discharge of the percolate.
Description
Technical Field
The invention relates to the field of landfill leachate treatment, in particular to a method for treating perishable landfill leachate by using hermetia illucens.
Background
In recent years, with the accelerating urbanization process of China, the living standard of people is steadily improved, and garbage classification is also developed in various cities of China. The garbage classification system requires to accelerate the establishment of a garbage treatment system with classification putting, classification collecting, classification transporting and classification treatment, wherein the front end is classified, and the rear end is treated. The perishable garbage in domestic garbage in China accounts for about 50%, the production amount of the perishable garbage is greatly increased along with the gradual implementation of garbage classification, the perishable garbage is in a trend of rising year by year, and the illegal disposal of the perishable garbage not only has great threat to food safety, but also seriously affects environmental sanitation and city appearance. The rear-end garbage treatment is completed for matching, a large number of perishable garbage treatment plants are built in China, garbage collected by the perishable garbage treatment plants needs to be subjected to solid-liquid separation in a garbage hopper, sewage in the garbage can seep out to form garbage leachate, and the garbage leachate is high-concentration and high-pollution liquid and has great influence on the environment.
At present, the treatment method of landfill leachate in China is basically mature, 60-70% of the leachate can be treated to be recycled or discharged after reaching the standard, but the treatment of leachate concentrated solution and the zero discharge process of the leachate always trouble perishable garbage treatment plants, but no leachate zero discharge treatment method capable of running stably exists at present because the quality of the leachate is complex.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a method for treating perishable landfill leachate by using hermetia illucens, which can solve the problems that the conventional landfill leachate treatment method needs treatment of leachate concentrated solution and zero discharge of leachate cannot be realized.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a method for treating perishable landfill leachate by using hermetia illucens, which comprises the following steps of:
step 1, preparing leachate feed by using perishable landfill leachate;
and 2, treating the leachate feed with hermetia illucens.
In step 1 of the method, the leachate feed prepared from the perishable landfill leachate is:
the perishable landfill leachate is prepared into fermentation liquor, and then is uniformly mixed with the solid premix and is fermented and prepared into leachate feed.
The leachate feed comprises the following components in parts by weight: 50-80 parts by mass of fermentation liquor and 20-50 parts by mass of solid premix prepared from perishable landfill leachate;
and uniformly mixing the fermentation liquor prepared from the perishable landfill leachate and the solid premix, and then putting the mixture into a fermentation tank, wherein the water content of the material is controlled to be 50-80%, the closed fermentation time is 6-24 hours, and the fermentation temperature is controlled to be 20-38 ℃.
The method for preparing the fermentation liquor from the perishable landfill leachate comprises the following steps:
step a, taking waste water of a perishable garbage treatment plant with the solid content of 5-10% after high-temperature cooking and oil removal by a three-phase separator as perishable garbage leachate, cooling the perishable garbage leachate and keeping the constant temperature at 30-42 ℃;
and b, respectively adding lactic acid bacteria, bacillus subtilis and bacillus amyloliquefaciens into the perishable landfill leachate, uniformly mixing the materials by using a stirrer, controlling the rotating speed of the stirrer to be 3-30 rmp/min and the temperature of the materials to be 30-42 ℃, and hermetically fermenting the fully mixed materials at constant temperature for 12-24 hours to obtain the fermented liquid of the perishable landfill leachate.
In the step b, the raw materials comprise the following components in parts by weight: 80-95 parts of perishable landfill leachate, 5-20 parts of lactic acid bacteria, 5-20 parts of bacillus subtilis and 5-20 parts of bacillus amyloliquefaciens.
In the method, the solid premix is prepared from the following raw materials in parts by mass: 40-60 parts of wheat bran, 10-30 parts of rice bran, 20-50 parts of bean dregs, 20-30 parts of vinasse and 10-20 parts of saw dust.
In the step 2 of the method, the treatment of the leachate feed by the hermetia illucens is as follows:
and (3) in a treatment workshop, carrying out treatment according to the steps of conveying and distributing the percolate feed, inoculating the black soldier fly larvae, turning and throwing the feed and supplementing the feed and screening the black soldier fly larvae.
In the method, the conveying and distributing of the percolate feed comprises the following steps: adopting a plunger pump pipeline type to convey the percolate feed, uniformly distributing the feed, and controlling the thickness of single distribution to be 3-10 cm;
the inoculation of the hermetia illucens larvae is as follows: adopting 3-year black soldier fly larvae (namely black soldier fly larvae with the weight of more than 10mg at the beginning of incubation and strong stress resistance and life vitality and uniform population size) with each black soldier fly larva, and inoculating 15000-30000 black soldier fly larvae according to the inoculation amount of 10kg of percolate feed;
the feed turning and feeding are as follows: turning the percolate feed in time for heat dissipation according to the temperature of the percolate feed in the feeding process, controlling the temperature of the feed to be below 45 ℃, wherein the thickness of the percolate feed is 2-3 cm;
the hermetia illucens larva screening method comprises the following steps: screening out black soldier fly larvae with white body surface, body length of more than 2cm and body weight of more than 80 mg.
In the method, the black soldier flies are used for treating the leachate feed, a treatment workshop is ventilated by adopting negative pressure and is provided with deodorization equipment, the ventilation rate is not lower than 9 times per hour, the environmental temperature is controlled to be constant, the temperature is not lower than 20 ℃ in winter, and the temperature is not higher than 34 ℃ in summer.
According to the technical scheme provided by the invention, the method for treating the perishable landfill leachate by using the hermetia illucens has the following beneficial effects that:
through making the perishable landfill leachate into filtration liquid feed earlier, filtration liquid feed is handled to reuse heisui river horsefly, not only need not carry out the advanced treatment to perishable landfill leachate, saves investment and energy consumption, and the perishable landfill leachate that can all retrieval and utilization handle moreover realizes perishable landfill leachate's zero release. The method is a treatment method which saves investment, has low operation cost and can realize zero discharge of the percolate.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The embodiments of the present invention are described in further detail below.
Example 1
The embodiment provides a method for treating perishable landfill leachate by using hermetia illucens, which comprises the following steps of:
step 1, preparing leachate feed by using perishable landfill leachate;
and 2, treating the percolate feed with hermetia illucens.
In step 1, the leachate feed prepared from the perishable landfill leachate is: the perishable landfill leachate is prepared into fermentation liquor, and then is uniformly mixed with the solid premix and is fermented and prepared into leachate feed.
The percolate feed comprises the following components in parts by weight: 60 parts by mass of fermentation liquor and 30 parts by mass of solid premix prepared from perishable landfill leachate;
uniformly mixing fermentation liquor prepared from the perishable landfill leachate with the solid premix, and then putting the mixture into a fermentation tank, wherein the water content of the material is controlled to be 75%, the closed fermentation time is 12 hours, and the fermentation temperature is controlled to be 36 ℃.
The method for preparing the fermentation liquor from the perishable landfill leachate comprises the following steps:
taking waste water of a perishable garbage treatment plant with the solid content of 7 percent after high-temperature cooking and oil removal by a three-phase separator as perishable garbage leachate, cooling the perishable garbage leachate and keeping the constant temperature at 36 ℃;
respectively adding lactic acid bacteria, bacillus subtilis and bacillus amyloliquefaciens into the perishable landfill leachate, uniformly mixing the materials by using a stirrer, controlling the rotating speed of the stirrer to be 20rmp/min and the temperature of the materials to be 36 ℃, and fermenting the fully mixed materials at constant temperature in a sealing manner for 12 hours to obtain the fermentation liquor of the perishable landfill leachate.
The raw materials are calculated according to the parts by weight: 85 parts of perishable landfill leachate, 10 parts of lactic acid bacteria, 10 parts of bacillus subtilis and 10 parts of bacillus amyloliquefaciens.
The solid premix is prepared from the following raw materials in parts by mass: 50 parts of wheat bran, 20 parts of rice bran, 40 parts of bean dregs, 25 parts of vinasse and 15 parts of sawdust.
The method for treating the leachate feed by using the hermetia illucens comprises the following steps:
the method comprises the steps of conveying and distributing percolate feed, inoculating black soldier fly larvae, turning and throwing the feed and supplementing the feed, and screening the black soldier fly larvae in a treatment workshop.
The conveying and distributing leachate feed comprises the following steps: adopting a plunger pump pipeline type to convey the percolate feed, and uniformly distributing the material, wherein the thickness of single distribution is controlled to be 5 cm;
the inoculation of the hermetia illucens larvae comprises the following steps: inoculating 3-year-old black soldier fly larvae (namely black soldier fly larvae with the weight of more than 10mg in the 7 th-8 th day from the beginning of hatching, wherein the black soldier fly larvae have stronger stress resistance and life vitality and have uniform population size) with 20000 inoculation quantities according to 10kg of percolate feed;
the feed turning and feeding are as follows: in the feeding process, the percolate feed is turned over in time according to the temperature of the percolate feed for heat dissipation, the temperature of the material is controlled to be below 45 ℃, and the thickness of the percolate feed is 3 cm;
the screening method of the hermetia illucens larvae comprises the following steps: screening out black soldier fly larvae with white body surface, body length of more than 2cm and body weight of more than 80 mg.
The treatment workshop adopts negative pressure ventilation and is provided with deodorization equipment, the ventilation quantity is 9 times per hour, the environmental temperature is controlled to be constant, 26 ℃ in winter and 30 ℃ in summer.
Example 2
The embodiment provides a method for treating perishable landfill leachate by using hermetia illucens, which comprises the following steps of:
step 1, preparing leachate feed by using perishable landfill leachate;
and 2, treating the percolate feed with hermetia illucens.
In step 1, the leachate feed prepared from the perishable landfill leachate is: the perishable landfill leachate is prepared into fermentation liquor, and then is uniformly mixed with the solid premix and is fermented and prepared into leachate feed.
The percolate feed comprises the following components in parts by weight: 80 parts by mass of fermentation liquor and 50 parts by mass of solid premix prepared from perishable landfill leachate;
uniformly mixing fermentation liquor prepared from the perishable landfill leachate with the solid premix, and then putting the mixture into a fermentation tank, wherein the water content of the material is controlled to be 80%, the closed fermentation time is 24 hours, and the fermentation temperature is controlled to be 38 ℃.
The method for preparing the fermentation liquor from the perishable landfill leachate comprises the following steps:
taking waste water of a perishable garbage treatment plant with the solid content of 10 percent after high-temperature cooking and oil removal by a three-phase separator as perishable garbage leachate, cooling the perishable garbage leachate and keeping the constant temperature at 42 ℃;
respectively adding lactic acid bacteria, bacillus subtilis and bacillus amyloliquefaciens into the perishable landfill leachate, uniformly mixing the materials by using a stirrer, controlling the rotating speed of the stirrer to be 30rmp/min and the temperature of the materials to be 40 ℃, and fermenting the fully mixed materials at constant temperature in a sealing manner for 24 hours to obtain the fermentation liquor of the perishable landfill leachate.
The raw materials are calculated according to the parts by weight: 95 parts of perishable landfill leachate, 20 parts of lactic acid bacteria, 20 parts of bacillus subtilis and 20 parts of bacillus amyloliquefaciens.
The solid premix is prepared from the following raw materials in parts by mass: 60 parts of wheat bran, 30 parts of rice bran, 50 parts of bean dregs, 30 parts of vinasse and 20 parts of sawdust.
The method for treating the leachate feed by using the hermetia illucens comprises the following steps:
the method comprises the steps of conveying and distributing percolate feed, inoculating black soldier fly larvae, turning and throwing the feed and supplementing the feed, and screening the black soldier fly larvae in a treatment workshop.
The conveying and distributing leachate feed comprises the following steps: adopting a plunger pump pipeline type to convey the percolate feed, and uniformly distributing the material, wherein the thickness of single distribution is controlled to be 10 cm;
the inoculation of the hermetia illucens larvae comprises the following steps: adopting 3-year black soldier fly larvae (namely black soldier fly larvae with the weight of more than 10mg at the beginning of incubation and strong stress resistance and life vitality and uniform population size) with each black soldier fly larva, and inoculating 30000 black soldier fly larvae according to the inoculation amount of 10kg of percolate feed;
the feed turning and feeding are as follows: in the feeding process, the percolate feed is turned over in time according to the temperature of the percolate feed for heat dissipation, the temperature of the material is controlled to be below 45 ℃, and the thickness of the percolate feed is 3 cm;
the screening method of the hermetia illucens larvae comprises the following steps: screening out black soldier fly larvae with white body surface, body length of more than 2cm and body weight of more than 80 mg.
The treatment workshop adopts negative pressure ventilation and is provided with deodorization equipment, the ventilation quantity is 9 times per hour, the environmental temperature is controlled to be constant, and the temperature is controlled to be 20 ℃ in winter and 34 ℃ in summer.
The method of the invention can solve a plurality of problems existing in the treatment process of the prior perishable landfill leachate, can achieve zero emission of the perishable landfill leachate, and realizes investment saving, low cost and stable operation of the system. The method can fully treat and utilize the perishable landfill leachate by fermenting the perishable landfill leachate, preparing the leachate feed and treating the feed hermetia illucens, basically realizes zero emission of the landfill leachate, reduces the pollution to the environment, and has low investment and operation cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for treating perishable landfill leachate by using hermetia illucens is characterized by comprising the following steps of:
step 1, preparing leachate feed by using perishable landfill leachate;
and 2, treating the leachate feed with hermetia illucens.
2. The method of claim 1, wherein the step 1 of preparing a leachate feed from the perishable landfill leachate comprises:
the perishable landfill leachate is prepared into fermentation liquor, and then is uniformly mixed with the solid premix and is fermented and prepared into leachate feed.
3. The method of claim 2, wherein the leachate feed comprises the following components in parts by weight: 50-80 parts by mass of fermentation liquor and 20-50 parts by mass of solid premix prepared from perishable landfill leachate;
and uniformly mixing the fermentation liquor prepared from the perishable landfill leachate and the solid premix, and then putting the mixture into a fermentation tank, wherein the water content of the material is controlled to be 50-80%, the closed fermentation time is 6-24 hours, and the fermentation temperature is controlled to be 20-38 ℃.
4. The method for treating perishable landfill leachate with hermetia illucens according to claim 2 or 3, wherein the step of preparing the perishable landfill leachate into fermentation broth comprises:
step a, taking waste water of a perishable garbage treatment plant with the solid content of 5-10% after high-temperature cooking and oil removal by a three-phase separator as perishable garbage leachate, cooling the perishable garbage leachate and keeping the constant temperature at 30-42 ℃;
and b, respectively adding lactic acid bacteria, bacillus subtilis and bacillus amyloliquefaciens into the perishable landfill leachate, uniformly mixing the materials by using a stirrer, controlling the rotating speed of the stirrer to be 3-30 rmp/min and the temperature of the materials to be 30-42 ℃, and hermetically fermenting the fully mixed materials at constant temperature for 12-24 hours to obtain the fermented liquid of the perishable landfill leachate.
5. The method for treating leachate of perishable wastes with hermetia illucens according to claim 4, wherein in the step b, the raw materials comprise, by weight: 80-95 parts of perishable landfill leachate, 5-20 parts of lactic acid bacteria, 5-20 parts of bacillus subtilis and 5-20 parts of bacillus amyloliquefaciens.
6. The method for treating the perishable landfill leachate with the hermetia illucens according to claim 2 or 3, wherein the solid premix is prepared from the following raw materials in parts by mass: 40-60 parts of wheat bran, 10-30 parts of rice bran, 20-50 parts of bean dregs, 20-30 parts of vinasse and 10-20 parts of saw dust.
7. The method of any one of claims 1 to 3, wherein the step 2 of treating the leachate feed with hermetia illucens is:
and (3) in a treatment workshop, carrying out treatment according to the steps of conveying and distributing the percolate feed, inoculating the black soldier fly larvae, turning and throwing the feed and supplementing the feed and screening the black soldier fly larvae.
8. The method of claim 7, wherein the delivering and distributing the leachate feed is: adopting a plunger pump pipeline type to convey the percolate feed, uniformly distributing the feed, and controlling the thickness of single distribution to be 3-10 cm;
the inoculation of the hermetia illucens larvae is as follows: adopting 3-year-old hermetia illucens larvae with the weight of more than 10mg, and inoculating 15000-30000 inoculation amounts of 10kg of percolate feed to inoculate the hermetia illucens larvae;
the feed turning and feeding are as follows: turning the percolate feed in time for heat dissipation according to the temperature of the percolate feed in the feeding process, controlling the temperature of the feed to be below 45 ℃, wherein the thickness of the percolate feed is 2-3 cm;
the hermetia illucens larva screening method comprises the following steps: screening out black soldier fly larvae with white body surface, body length of more than 2cm and body weight of more than 80 mg.
9. The method of claim 7, wherein during the treatment of the leachate feed with black soldier flies, the treatment plant is ventilated with negative pressure and is provided with a deodorizing device, the ventilation rate is not less than 9 times per hour, the ambient temperature is controlled to be constant, the temperature is not less than 20 ℃ in winter and not more than 34 ℃ in summer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113575517A (en) * | 2021-07-09 | 2021-11-02 | 浙江省农业科学院 | Method for promoting biotransformation of insect larvae by adjusting moisture content of biomass waste |
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| US20160130625A1 (en) * | 2013-06-06 | 2016-05-12 | River Road Research, Inc. | Methods for producing melanin and inorganic fertilizer from fermentation leachates |
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