CN116116874A - Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation - Google Patents
Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation Download PDFInfo
- Publication number
- CN116116874A CN116116874A CN202310154868.6A CN202310154868A CN116116874A CN 116116874 A CN116116874 A CN 116116874A CN 202310154868 A CN202310154868 A CN 202310154868A CN 116116874 A CN116116874 A CN 116116874A
- Authority
- CN
- China
- Prior art keywords
- agricultural
- waste
- reactor
- forestry
- biological
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 66
- 230000008020 evaporation Effects 0.000 title claims abstract description 66
- 239000002699 waste material Substances 0.000 title claims abstract description 64
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000008961 swelling Effects 0.000 claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims description 32
- 239000010802 sludge Substances 0.000 claims description 13
- 238000012258 culturing Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000002572 peristaltic effect Effects 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000813 microbial effect Effects 0.000 abstract description 22
- 230000002503 metabolic effect Effects 0.000 abstract description 4
- 239000004067 bulking agent Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000000969 carrier Substances 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 239000002028 Biomass Substances 0.000 abstract 3
- 235000010855 food raising agent Nutrition 0.000 abstract 1
- 238000005273 aeration Methods 0.000 description 24
- 241000209094 Oryza Species 0.000 description 9
- 235000007164 Oryza sativa Nutrition 0.000 description 9
- 241000209140 Triticum Species 0.000 description 9
- 235000021307 Triticum Nutrition 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 235000009566 rice Nutrition 0.000 description 9
- 239000010902 straw Substances 0.000 description 9
- 244000302544 Luffa aegyptiaca Species 0.000 description 7
- 235000009814 Luffa aegyptiaca Nutrition 0.000 description 7
- 210000000988 bone and bone Anatomy 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 235000011837 pasties Nutrition 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 244000241257 Cucumis melo Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- 241000219138 Luffa Species 0.000 description 2
- 235000003956 Luffa Nutrition 0.000 description 2
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/38—Stirring or kneading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/60—Biochemical treatment, e.g. by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/70—Kitchen refuse; Food waste
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation, and belongs to the field of solid waste resource utilization. In practical applications of the bioevaporation process, an economical, easily prepared swelling agent and a microbial carrier are indispensable; the biomass residues formed by the biological film can not only provide structural support and a microbial source, but also contribute metabolic heat to the biological evaporation process, so that the water evaporation enhancement and the synergistic treatment of the biomass residues are realized. The invention firstly prepares agriculture and forestry waste as a carrier, then cultures and carries biological films on the carrier, and successfully uses biomass residues formed by the biological films as a bulking agent and a microbial carrier for biological evaporation of kitchen waste. The invention can not only find novel leavening agents and microorganism carriers which are economical and easy to prepare for large-scale application of the biological evaporation process, but also can reduce the discharge of agricultural and forestry wastes.
Description
Technical Field
The invention relates to a method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation, and belongs to the field of solid waste resource utilization.
Background
Kitchen waste occupies most of urban garbage and causes serious global problems, and if the kitchen garbage is improperly treated, environmental pollution such as water, air and the like is extremely easy to cause the spread of human diseases. Biological evaporation is a new process for treating kitchen waste, and the technology utilizes metabolic heat generated by degrading organic matters by aerobic microorganisms to evaporate the water of the kitchen waste so as to achieve synchronous removal of the organic matters and the water. During the biological evaporation process, the swelling agent and the microbial carrier play a vital role; the expanding agent can adjust the water content and free porosity of the kitchen waste biological evaporation pile body, and can provide a carbon source for the pile body to promote the evaporation of water.
Biological desiccated sludge and biofilm sponges are commonly used as bulking agents and microbial carriers for biological evaporation processes. The biological desiccation sludge has the characteristics of porous, large specific surface area, strong water absorption and permeability, but the preparation period is long, and the evaporation process is easy to generate malodor; polyurethane sponge, which is cheap, light, porous, large in specific surface area, good in supporting performance and strong in water absorption permeability, has been widely used as a biomembrane carrier in municipal and industrial wastewater treatment, but does not exist naturally. Thus, it is necessary to explore an economical, easily prepared bulking agent and microbial carrier. This is because 200gL is required during the biological evaporation process if the metabolic heat comes only from the degradation of the organic matter in the wastewater -1 The organic matter concentration in the wastewater can be completely removed.
The agriculture and forestry waste is a waste part in the process of harvesting or processing agriculture and forestry, has abundant reserves and low price, and is difficult to process due to degradability. With the popularization of clean energy sources, the agricultural and forestry waste has lost the effect of traditional fuels. But the improper treatment can generate toxic and harmful gas to pollute the environment. Most agricultural and forestry wastes have large specific surface area and light weight, and the crystal structure formed by lignocellulose has strong supporting capability. The agricultural and forestry waste with small particle size also has rich porosity, is favorable for mass transfer, has better water absorption capacity, and can be used for adhering surface biological films like polyurethane sponge. The agricultural and forestry waste loaded by the biological film is used as an expanding agent and a microbial carrier for biological evaporation treatment, so that the aim of reducing and discharging the agricultural and forestry waste can be simultaneously achieved. The agricultural and forestry waste can be used as an expanding agent and a microbial carrier in the biological evaporation process, and can play a role in synergistic organic matter degradation due to the rich organic components.
Disclosure of Invention
Aiming at the problems of treatment of agricultural and forestry waste and the need of more economic expanding agent and microorganism carrier in the biological evaporation process, the invention provides a method for performing biological evaporation by taking agricultural and forestry waste as the expanding agent and the microorganism carrier in a synergistic way, so as to reduce the emission of agricultural and forestry waste, popularize the practical range of biological evaporation and lay a foundation for searching new expanding agent and microorganism carrier.
The technical content of the invention comprises the following steps:
(1) Pretreatment of agricultural and forestry waste: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Film-forming cultivation of agricultural and forestry waste: an aeration disc is fixed at the bottom of the reactor for cultivating the agricultural and forestry waste with the biological membrane; adding agricultural and forestry waste into a reactor, inoculating activated sludge with mixed liquor volatile suspension solid concentration of 300-400mg/L (the inoculation amount is not strictly required, and inoculation) into the reactor, adding synthetic wastewater until the agricultural and forestry waste is just submerged, and adding the synthetic wastewater into the reactor until the concentration of the volatile suspension solid concentration of the mixed liquor is 1-2Lmin -1 Is aerated into the reactor at a speed of 20-30mLmin by a peristaltic pump -1 Continuously injecting synthetic wastewater into the bottom of the reactor at the same flow rate, discharging wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 3-5 days until a biological film is formed on the surfaces of the agricultural and forestry wastes; from reactor for agriculture and forestry wasteTaking out, squeezing to remove water.
(4) Mixing 150-200g kitchen waste with 3.5-4.5L dehydrated swelling agent and microorganism carrier to adjust the initial volume load (6.2-10.6 gVS) FW L -1 ) The mixture was then added to a bioavaporation reactor made from a polypropylene foam.
(5) In the biological evaporation process, an aeration disc is arranged at the bottom of the reactor for continuous and uniform aeration, and the aeration rate is 0.3-0.5Lmin -1 。
(6) In the biological evaporation process, a temperature probe is connected to the reactor from the top, and the temperature of the reactor is continuously recorded; the reactor was closed until the reactor temperature was lowered to room temperature and the reaction was completed.
Preferably, MC of the forestry waste is 60-81%, and VS is 88-99%.
Preferably, the lignocellulose content of the agricultural and forestry waste is as follows: 63-90%.
Preferably, the COD of the kitchen waste is 180-380gL -1 The water content is 75-85%, and the VS is 93-97%.
The wastewater of the invention is: high concentration organic wastewater with COD greater than 20g/L, such as landfill leachate, kitchen waste and various industrial wastewater, can be used in the invention.
The expanding agent and the microbial carrier adopted by the prior biological evaporation are mainly biological desiccated sludge and polyurethane sponge. The biological desiccation sludge is prepared by an additional biological desiccation step, and the polyurethane sponge is not naturally existing, so that new environmental pollution can be generated by utilizing the polyurethane sponge; aiming at the problem of biological evaporation, the invention provides a novel biological evaporation expanding agent, namely agricultural and forestry waste; the agricultural and forestry waste has the following advantages as the biological evaporation swelling agent:
(1) The agricultural and forestry waste is commonly existing in the nature, and a great amount of agricultural and forestry waste is generated and needs to be solved, so that the agricultural and forestry waste can be reduced.
(2) The agricultural and forestry waste can be degraded, and can be degraded by itself in part in the biological evaporation process by taking the agricultural and forestry waste as an expanding agent and a microbial carrier, so that metabolic heat is generated, and the biological evaporation is performed cooperatively.
(3) The agricultural and forestry waste contains a large amount of organic matters, and the waste water with low organic matter content can be treated by biological evaporation as an expanding agent and a microbial carrier; the invention realizes the synchronous removal of agricultural and forestry waste and organic wastewater by searching for a new expanding agent and a microorganism carrier, and is a new economic and environment-friendly invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited to the above.
Example 1
The embodiment uses wheat straw as an expanding agent and a microbial carrier for biological evaporation treatment of kitchen waste, and specifically comprises the following steps:
(1) Pretreatment of wheat straw: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Film-forming cultivation of wheat straw: the volume of the organic glass reactor for culturing the biological film wheat straw is 18.84L (D=200 mm, H=600 mm and the wall thickness is 3 mm), and an aeration disc is fixed at the bottom of the organic glass reactor; adding wheat straw into a reactor, inoculating active sludge (2L) with mixed liquor volatile suspended solid concentration of 400mg/L into the reactor, adding wastewater until the wheat straw is just submerged, and adding wastewater into the reactor for 2Lmin -1 Aerating in the reactor, continuously injecting synthetic wastewater into the bottom of the reactor at a flow rate of 28mLmin-1 by using a peristaltic pump, simultaneously discharging the wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 4 days until a biological film is formed on the surface of the wheat straw; taking out the wheat straw from the reactor, and squeezing out water.
(4) 155g of kitchen waste were mixed with 4.05L of dehydrated swelling agent and microbial carrier to adjust the initial volume load of the swelling agent (8.66 gVS FW L -1 ) The mixture was then added to 4.38L of a bioavaporation reactor made from polypropylene foam.
(5) Biological steamingIn the process of fermentation, the aeration disc arranged at the bottom of the reactor continuously and uniformly aerates, and the aeration rate is 0.4Lmin -1 。
(6) In the biological evaporation process, the reactor is connected with a temperature probe from the top, and the temperature of the reactor is continuously recorded. The reactor was closed until the reactor temperature was lowered to room temperature and the reaction was completed.
After the wheat straw is used as an expanding agent and a microbial carrier for biological evaporation treatment, the weight of the stack is reduced by 197g, the moisture of kitchen waste is reduced by 168.99g, the removal rate is 143.51%, the organic components are reduced by 28.81g, the removal rate is 135.92%, and the substrate after biological evaporation can be used as a carrier for the next round of biological evaporation.
Example 2
The embodiment takes rice stalks as an expanding agent and a microorganism carrier to carry out biological evaporation treatment on kitchen waste, and specifically comprises the following steps:
(1) Pretreatment of rice stalks: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Film-forming cultivation of rice stalks: the volume of the organic glass reactor for cultivating the biomembrane rice stalks is 18.84L (D=200 mm, H=600 mm, wall thickness 3 mm), and an aeration disc is fixed at the bottom of the organic glass reactor. Adding rice stalks into a reactor, inoculating 400mg/L volatile suspended solid active sludge into the reactor, adding wastewater until the rice stalks are just submerged, and adding the wastewater into the reactor for 1Lmin -1 Aerating in the reactor, continuously injecting synthetic wastewater into the bottom of the reactor at a flow rate of 20mLmin-1 by using a peristaltic pump, simultaneously discharging the wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 3-5 days until a biological film is formed on the surfaces of the rice stalks. And taking out the rice stalks from the reactor, and squeezing out water.
(4) 150g of kitchen waste was mixed with 3.5L of dehydrated swelling agent and microbial carrier to adjust the initial volume load of the swelling agent (6.2 gVS FW L -1 ) The mixture was then added to 4.38L of a bioavaporation reactor made from polypropylene foam.
(5) In the biological evaporation process, an aeration disc is arranged at the bottom of the reactor for continuous and uniform aeration, and the aeration rate is 0.3Lmin -1 。
(6) In the biological evaporation process, a temperature probe is connected to the reactor from the top, and the temperature of the reactor is continuously recorded; the reactor was closed until the reactor temperature was lowered to room temperature and the reaction was completed.
After the rice stalks are used as the expanding agent and the microbial carrier for biological evaporation treatment, the weight of the piled body is reduced by 198g, the water content of the kitchen waste is reduced by 174.37g, the removal rate is 156.56%, the organic components are reduced by 28.32g, the removal rate is 89.54%, and the substrate after biological evaporation can be used as the carrier for the next round of biological evaporation.
Example 3
In the embodiment, saw dust is used as an expanding agent and a microorganism carrier for biological evaporation treatment of kitchen waste, and the method specifically comprises the following steps:
(1) Pretreatment of saw dust: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Film-forming cultivation of saw dust: the volume of the organic glass reactor for biofilm sawdust cultivation was 18.84L (d=200 mm, h=600 mm, wall thickness 3 mm), and an aeration disc was fixed at the bottom thereof. Adding sawdust into a reactor, inoculating active sludge with mixed solution volatile suspended solid concentration of 350mg/L into the reactor, adding wastewater until sawdust is just submerged, and adding water into the reactor for 2Lmin -1 Aerating in the reactor, continuously injecting synthetic wastewater into the bottom of the reactor at the flow rate of 28mLmin-1 by using a peristaltic pump, simultaneously discharging the wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 3-5 days until a biological film is formed on the surface of saw dust. The sawdust was removed from the reactor and water was removed by extrusion.
(4) 200g of kitchen waste was mixed with 4.0L of dehydrated swelling agent and microbial carrier to adjust the initial volume load of the swelling agent (10.6 gVS FW L -1 ) The mixture was then added to 4.38L of a bioavaporation reactor made from a polypropylene foamA reactor.
(5) In the biological evaporation process, an aeration disc is arranged at the bottom of the reactor for continuous and uniform aeration, and the aeration rate is 0.5Lmin -1 。
(6) In the biological evaporation process, the reactor is connected with a temperature probe from the top, and the temperature of the reactor is continuously recorded. The reactor was closed until the reactor temperature was lowered to room temperature and the reaction was completed.
After the sawdust is used as an expanding agent and a microbial carrier for biological evaporation treatment, the weight of the pile is reduced by 182g, the water content of the kitchen waste is reduced by 152.53g, the removal rate is 119.40%, the organic component is reduced by 26.58g, the removal rate is 70.07%, and the substrate after biological evaporation can be used as a carrier for the next round of biological evaporation.
Example 4
In the embodiment, vegetable sponge is used as an expanding agent and a microorganism carrier for biological evaporation treatment of kitchen waste, and the method specifically comprises the following steps:
(1) Pretreatment of the silk melon pulp: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Film-forming culture of the silk melon pulp: the volume of the organic glass reactor for cultivating the biological film vegetable sponge is 18.84L (D=200 mm, H=600 mm, wall thickness 3 mm), and an aeration disc is fixed at the bottom of the organic glass reactor; adding vegetable sponge into a reactor, inoculating 400mg/L volatile suspension solid active sludge into the vegetable sponge, adding wastewater until the vegetable sponge is just submerged, and adding the wastewater into the vegetable sponge for 2Lmin -1 Aeration is carried out in the reactor, a peristaltic pump is used for continuously injecting synthetic wastewater into the bottom of the reactor at the flow rate of 28mLmin-1, and simultaneously, the wastewater is discharged from the upper part of the reactor at the same flow rate, and continuous culture is carried out for 3-5 days until a biological film is formed on the surface of the vegetable sponge. The luffa pulp is taken out of the reactor and water is squeezed out.
(4) 155g of kitchen waste were mixed with 4.05L of dehydrated swelling agent and microbial carrier to adjust the initial volume load of the swelling agent (8.66 gVS FW L -1 ) The mixture was then added to 4.38L of polypropylene foamFoam preparation the biological evaporation reactor is obtained.
(5) In the biological evaporation process, an aeration disc is arranged at the bottom of the reactor for continuous and uniform aeration, and the aeration rate is 0.4Lmin -1 。
(6) In the biological evaporation process, the reactor is connected with a temperature probe from the top, and the temperature of the reactor is continuously recorded. The reactor was closed until the reactor temperature was lowered to room temperature and the reaction was completed.
After the biological evaporation treatment is carried out on the luffa pulp serving as an expanding agent and a microbial carrier, the weight of the stack is reduced by 164g, the water content of kitchen waste is reduced by 143.33g, the removal rate is 121.71%, the organic component is reduced by 21.54g, the removal rate is 61.40%, and the substrate after biological evaporation can be used as a carrier for the next round of biological evaporation.
Example 5
In the embodiment, palm is used as an expanding agent and a microorganism carrier for biological evaporation treatment of kitchen waste, and the method specifically comprises the following steps:
(1) Pretreatment of palm: cutting and sieving the collected agricultural and forestry waste to 3-4mm.
(2) Preparing kitchen waste: and removing hard wastes such as bones from the collected kitchen wastes, and stirring the hard wastes to be pasty by using a stirrer.
(3) Culturing palm hanging membranes: the volume of the organic glass reactor for the palm culture of the biological film is 18.84L (D=200 mm, H=600 mm, wall thickness 3 mm), and an aeration disc is fixed at the bottom of the organic glass reactor; adding palm into a reactor, inoculating activated sludge with mixed solution volatile suspended solid concentration of 300mg/L into the reactor, adding and synthesizing until the palm is just submerged, and adding the activated sludge into the reactor for 2Lmin -1 Aerating in the reactor, continuously injecting synthetic wastewater into the bottom of the reactor at a flow rate of 28mL min < -1 > by using a peristaltic pump, simultaneously discharging the wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 3-5 days until a biological film is formed on the surface of the palm; the palm is removed from the reactor and water is removed by squeezing.
(4) 155g of kitchen waste were mixed with 4.05L of dehydrated swelling agent and microbial carrier to adjust the initial volume load of the swelling agent (8.66 gVS FW L -1 ) The mixture was then added to 4.38L of polypropylene glycolThe alkene foam is prepared into a biological evaporation reactor.
(5) In the biological evaporation process, an aeration disc is arranged at the bottom of the reactor for continuous and uniform aeration, and the aeration rate is 0.4Lmin -1 。
(6) In the biological evaporation process, a temperature probe is connected to the reactor from the top, the temperature of the reactor is continuously recorded, the reactor is closed until the reactor temperature is reduced to room temperature, and the reaction is finished.
After the palm is used as a swelling agent and a microbial carrier to carry out biological evaporation treatment, the weight of the piled body is reduced by 260g, and the piled body is eaten; the water content of the kitchen waste is reduced by 212.79g, the removal rate is 156.56%, the organic component is reduced by 46.23g, the removal rate is 89.54%, and the substrate after biological evaporation can be used as a carrier for the next round of biological evaporation.
Claims (6)
1. A method for processing kitchen waste by agricultural and forestry waste in cooperation with biological evaporation is characterized by comprising the following steps: the method takes biomembrane agricultural and forestry waste as an expanding agent and a microorganism carrier and comprises the following steps:
(1) Film-forming cultivation of agricultural and forestry waste: cutting and sieving the collected forestry and agricultural residues to 3-4mm, adding the forestry and agricultural residues into a reactor, inoculating activated sludge into the reactor, adding wastewater until the forestry and agricultural residues are just submerged, and adding the wastewater into the reactor until the concentration of the wastewater is 1-2Lmin -1 Is aerated into the reactor at a speed of 20-30mL min by a peristaltic pump -1 Continuously injecting synthetic wastewater into the bottom of the reactor at the same flow rate, discharging wastewater from the upper part of the reactor at the same flow rate, and continuously culturing for 3-5 days until a biological film is formed on the surfaces of the agricultural and forestry wastes; taking out the agricultural and forestry waste from the reactor, and squeezing out water;
(2) Mixing kitchen waste with dehydrated swelling agent and microorganism carrier, and regulating initial volume load of the swelling agent to 6.2-10.6g VS FW L -1 The mixture was then added to a bioavaporation reactor made from a polypropylene foam.
2. The method for processing kitchen waste by agricultural and forestry waste collaborative biological evaporation according to claim 1, wherein the method comprises the following steps: MC of the agricultural and forestry waste is 60-81%, and VS is 88-99%.
3. The method for processing kitchen waste by agricultural and forestry waste collaborative biological evaporation according to claim 1, wherein the method comprises the following steps: the concentration of the volatile suspended solids of the mixed liquor in the activated sludge is 300-400mg/L.
4. The method for processing kitchen waste by agricultural and forestry waste collaborative biological evaporation according to claim 2, characterized in that: the lignocellulose content of the agricultural and forestry waste is as follows: 63-90%.
5. The method for processing kitchen waste by agricultural and forestry waste collaborative biological evaporation according to claim 2, characterized in that: and (3) mixing 150-200g of kitchen waste in the step (2) with 3.5-4.5L of dehydrated expanding agent and microorganism carrier.
6. The method for processing kitchen waste by agricultural and forestry waste collaborative biological evaporation according to claim 1, wherein the method comprises the following steps: COD of the kitchen waste is 180-380g L -1 The water content is 75-85%, and the VS is 93-97%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310154868.6A CN116116874A (en) | 2023-02-23 | 2023-02-23 | Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310154868.6A CN116116874A (en) | 2023-02-23 | 2023-02-23 | Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116116874A true CN116116874A (en) | 2023-05-16 |
Family
ID=86302811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310154868.6A Pending CN116116874A (en) | 2023-02-23 | 2023-02-23 | Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116116874A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001157898A (en) * | 1999-12-03 | 2001-06-12 | Harada:Kk | Method for treating waste water from waste disposal plant |
| FR2890389A1 (en) * | 2005-09-08 | 2007-03-09 | Degremont Sa | PROCESS FOR THE BIOLOGICAL PURIFICATION OF WASTE WATER WITH THE ADDITION OF OXIDIZING AGENT |
| CN103008324A (en) * | 2012-11-26 | 2013-04-03 | 北京化工大学 | Efficient anaerobic digestion method for self-immobilized biological membranes of kitchen wastes and fruit and vegetable wastes |
| CN105060461A (en) * | 2015-07-23 | 2015-11-18 | 昆明理工大学 | High-concentration organic wastewater biological evaporation treatment method |
| CN110092679A (en) * | 2019-06-18 | 2019-08-06 | 陈赫然 | A kind of method of straw biological fermentation evaporation bed processing changing food waste into resources |
| CN115555389A (en) * | 2022-09-12 | 2023-01-03 | 昆明理工大学 | Cooperative treatment method for refractory organic waste and red mud |
-
2023
- 2023-02-23 CN CN202310154868.6A patent/CN116116874A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001157898A (en) * | 1999-12-03 | 2001-06-12 | Harada:Kk | Method for treating waste water from waste disposal plant |
| FR2890389A1 (en) * | 2005-09-08 | 2007-03-09 | Degremont Sa | PROCESS FOR THE BIOLOGICAL PURIFICATION OF WASTE WATER WITH THE ADDITION OF OXIDIZING AGENT |
| CN103008324A (en) * | 2012-11-26 | 2013-04-03 | 北京化工大学 | Efficient anaerobic digestion method for self-immobilized biological membranes of kitchen wastes and fruit and vegetable wastes |
| CN105060461A (en) * | 2015-07-23 | 2015-11-18 | 昆明理工大学 | High-concentration organic wastewater biological evaporation treatment method |
| CN110092679A (en) * | 2019-06-18 | 2019-08-06 | 陈赫然 | A kind of method of straw biological fermentation evaporation bed processing changing food waste into resources |
| CN115555389A (en) * | 2022-09-12 | 2023-01-03 | 昆明理工大学 | Cooperative treatment method for refractory organic waste and red mud |
Non-Patent Citations (1)
| Title |
|---|
| 刘艳梅: "农林废弃物协同强化餐厨垃圾生物蒸发处理", 《外加生物质协同强化餐厨垃圾生物蒸发处理的机制研究》, no. 02, 15 February 2022 (2022-02-15), pages 27 - 28 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9404163B2 (en) | Pseudomonas putida strain as well as its microbial inoculum and application | |
| CN109536173B (en) | Composite material for simultaneously repairing heavy metal and glyphosate and preparation method thereof | |
| CN101319212A (en) | Immobilization method for anaerobic fermentation bacterial active sludge | |
| CN101591131B (en) | Method for treating bottom sediment in lake | |
| CN112337033B (en) | Harmless treatment method of abamectin slag, product and application of product as sandy soil modifier | |
| CN111206027B (en) | Magnetic biochar suitable for loading bacillus and preparation method and application thereof | |
| CN110627543B (en) | Method for promoting compost maturity of livestock and poultry manure through microbial pretreatment | |
| CN114561327A (en) | Cellulose degradation composite microbial inoculum and preparation method and application thereof | |
| CN104045388B (en) | A kind of charcoal is as the application of external source amendment in sludge composting | |
| CN110591975A (en) | Immobilized thermophilic microbial community for treating municipal sludge and preparation and use methods thereof | |
| CN116116874A (en) | Method for treating kitchen waste by agricultural and forestry waste in cooperation with biological evaporation | |
| CN1810734A (en) | Refuse composting process adding different decay promoting ferments separately and its decay promoting ferments | |
| CN114350579B (en) | Sludge aerobic composting composite microbial inoculum and preparation method and application thereof | |
| CN116083495A (en) | Method for relieving inhibition of anaerobic digestion ammonia nitrogen by utilizing saccharomycetes | |
| CN113636641B (en) | Carbon-reduction sewage biological treatment method and carbon-fixation soil conditioner prepared from sludge | |
| CN114317323A (en) | Microbial agent for rapidly degrading organic matters in kitchen waste | |
| CN114645041A (en) | Bottom sediment-improved composite microbial inoculum and preparation method thereof | |
| CN110240284B (en) | Microbial koji block for sewage treatment, preparation method and application thereof | |
| Siripattanakul-Ratpukdi et al. | Municipal wastewater treatment using barium alginate entrapped activated sludge: adjustment of utilization conditions | |
| CN112322520A (en) | Microbial agent for sewage treatment and preparation method thereof | |
| CN110683916A (en) | Fermentation material of organic substrate for greening and preparation method thereof | |
| CN117486439B (en) | Papermaking wastewater treatment method with low sludge yield | |
| CN111362404A (en) | Solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment and preparation method thereof | |
| CN114873741B (en) | Denitrification slow-release carbon source material and preparation method and application thereof | |
| CN113604511B (en) | Method for harmless and recycling treatment of rural organic garbage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |