CN104259177A - Method for producing soil conditioner raw material by using kitchen garbage and solid agriculture and forestry wastes - Google Patents
Method for producing soil conditioner raw material by using kitchen garbage and solid agriculture and forestry wastes Download PDFInfo
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- CN104259177A CN104259177A CN201410464862.XA CN201410464862A CN104259177A CN 104259177 A CN104259177 A CN 104259177A CN 201410464862 A CN201410464862 A CN 201410464862A CN 104259177 A CN104259177 A CN 104259177A
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- 239000002994 raw material Substances 0.000 title claims abstract description 30
- 239000003516 soil conditioner Substances 0.000 title claims abstract description 25
- 239000007787 solid Substances 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 239000010813 municipal solid waste Substances 0.000 title abstract description 8
- 239000002699 waste material Substances 0.000 title abstract description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000007791 liquid phase Substances 0.000 claims abstract description 4
- 239000010794 food waste Substances 0.000 claims description 41
- 239000002910 solid waste Substances 0.000 claims description 38
- 230000003647 oxidation Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 235000019198 oils Nutrition 0.000 claims description 6
- 239000008234 soft water Substances 0.000 claims description 6
- 239000012265 solid product Substances 0.000 claims description 6
- 238000011033 desalting Methods 0.000 claims description 5
- 239000003225 biodiesel Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000010806 kitchen waste Substances 0.000 claims description 3
- 239000012263 liquid product Substances 0.000 claims description 3
- 235000019476 oil-water mixture Nutrition 0.000 claims description 3
- 235000012054 meals Nutrition 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000029087 digestion Effects 0.000 abstract 1
- 238000005191 phase separation Methods 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000256113 Culicidae Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 206010048282 zoonosis Diseases 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for producing a soil conditioner raw material by using kitchen garbage and solid agriculture and forestry wastes. The method comprises the following steps of (1) performing raw material treatment: respectively treating the kitchen garbage and the solid agriculture and forestry wastes; (2) performing subcritical hydropyrolysi-ozone oxidization digestion: feeding smashed raw materials into a reaction kettle, and feeding ozone for digesting the raw materials in a united manner under a high-temperature and high-pressure subcritical environment; (3) after the raw materials are digested, cooling and decompressing the reaction kettle, and performing solid-liquid phase separation on products; and (4) drying and smashing the separated solid phase products to obtain the soil conditioner raw material for later use, and feeding liquid phase products into a water storage basin for recycling. According to the method, an effect of improving the environment in both the urban and countries is achieved, energy is fully saved, repeated use of resources is realized, and harm caused by improper treatment on the garbage to human is avoided; the ecological benefit of a kitchen garbage recycling product is enhanced, the cost for treating the kitchen garbage is lowered, and the appeal of harmless, reducing and recycling garbage treatment of the government is responded.
Description
Technical field
The present invention relates to a kind of method that changing food waste and agricultural solid waste produce soil conditioner raw material, refer to especially and a kind ofly clear up based on subcritical water pyrolysis-ozone oxidation the method that technology realizes producing changing food waste and agricultural solid waste efficient degradation soil conditioner raw material.
Background technology
For a long time, changing food waste and agricultural solid waste always out in the cold, manage unordered.Particularly changing food waste, mainly being raised pigs by some lawless persons to purchase at a low price and refine waste oil, is secondly enter refuse landfill and sewer.The toxin produced due to the foreign material in changing food waste and fermentation at pig cylinder accumulation, also can cause adverse effect to the healthy of eater, but also may cause the infection of zoonosis and spread.Lawless person utilizes changing food waste to refine changing food waste oil, and circulation enters Oilseed market, then enters in the food chain of city dweller.Domestic also once repeatedly report resident because of eaten changing food waste oil processing food and poisoning event.Changing food waste is arranged into urban discharging pipeline, urban discharging pipeline is very easily caused to silt up, and putrefaction can also be there is under the effect of microorganism in sewer, multiply mosquitos and flies, spread disease, produce a large amount of toxic and harmful, the methane wherein produced etc. can occur to assemble and blast under certain conditions.Changing food waste carries out landfill, not only can take a large amount of soil, and makes the generation wasting of resources.
Along with various places Process of Urbanization Construction is more and more faster, progressively improving of the fast development of tourist industry and the living standard of the people and increasing of population, thing followed restaurant, changing food waste output also constantly increase, because changing food waste moisture content is high, be rich in nutrients, very easily putrid and deteriorated, the harm potential to urban environmental hygiene is very large.
Summary of the invention
The object of the present invention is to provide a kind of changing food waste and agricultural solid waste to produce the method for soil conditioner raw material, solve existing food wastes or and rural area agricultural solid waste contaminated environment, realize the difficult problem of low-carbon circular economy.
For solving the problems of the technologies described above, technology of the present invention by the following technical solutions:
Changing food waste and agricultural solid waste produce a method for soil conditioner raw material, comprise the following steps:
(1) Feedstock treating: after a) sorting removal impurity being crossed to kitchen waste, carry out Solid-Liquid Separation, isolated oil water mixture enters multifeed clarifier and carries out profit layering, upper strata oil slick is collected, raw materials for production as biodiesel store or transhipment, and the solid residue obtained is pulverized stand-by after carrying out desalting processing; B) agricultural solid waste is removed after impurity through sorting and is pulverized reception use;
(2) subcritical aquathermolysis ?ozone oxidation is cleared up: the crushed material of eat kitchen solid refuse or agricultural solid waste and soft water are dropped into reactor for 1:2 ~ 10 in mass ratio, then in reactor, carry high-temperature steam and ozone, carry out subcritical water pyrolysis-ozone oxidation in reactor and clear up reaction;
(3) reacted that rear reactor carries out cooling, step-down, and Solid-Liquid Separation has been carried out to product;
(4) isolated solid product is pulverized after drying and is carried out storing or transporting as soil conditioner raw material, and liquid product enters tank, clears up required water add reactor as next solid waste.
Further, in described step (1), the Solid-Liquid Separation of changing food waste is realized by thick, thin two stage multiple filtrations, and rely on the switch of the digital quantity signal of pressure sensor to screen pack to control, accurately to control single changing food waste or farmland solid waste treating capacity.
Further, in described step (1), desalting processing is the soft water rinsing process that centrifugal rinsing machine carries out.
Further, the equipment clearing up process in described step (2) comprises: high-temperature high-pressure reaction kettle, reactor heater, steam generator, steam delivery device, ozone generator and ozone conveying device, and described steam generator, ozone generator are connected with reactor with ozone conveying device respectively by steam delivery device; Described reactor built-in temperature, pressure sensor and video capture device; Described ozone clears up treatment facility when actual treatment changing food waste or agricultural solid waste, according to treating capacity can some high-temperature high-pressure reaction kettles in parallel to improve disposal ability.
Further, the idiographic flow of described step (2) Subcritical treatment process is: first the crushed material of eat kitchen solid refuse or agricultural solid waste and water are dropped into reactor in proportion, airtight rear reactor heater brings into operation, steam delivery device carries high-temperature steam in reactor simultaneously, delivery of ozone in reactor is started after reaching preset pressure in reactor, finally reach the reaction pressure cleared up needed for reaction, react the conveying of rear stopping steam and ozone.
Further, in described step (2), the temperature of high-temperature steam is 220 ~ 374 DEG C, the initial temperature of reactor and pressure are respectively 20 DEG C, 0.1MPa, the preset pressure of reactor is 1.5MPa, reaction pressure in reactor is 2.5 ~ 22.0MPa, whole course of reaction continues 10 ~ 25min, and in period reactor, temperature changes with the change of pressure.
Further, in described step (3), solid liquid phase is separated by centrifugal dehydrator.
Further, the middle solid product of described step (4) is dried the heat discharged when clearing up rear high-temperature high-pressure reaction kettle cooling step-down by the changing food waste of next batch or agricultural solid waste and has been come, and realizes recycling of heat energy, reaches energy-saving effect.
Further, the screen pack switch that described pressure sensor controls, centrifugal rinsing machine, reactor, reactor heater, temperature sensor, pressure sensor, steam generator, steam delivery device, ozone generator, ozone conveying device, centrifugal dehydrator and conveying equipment are all connected with PLC, realize the Automated condtrol of whole technological process.
The above-mentioned soil conditioner raw material utilizing changing food waste and agricultural solid waste to obtain can directly as high-efficiency organic fertilizer or by processing after as soil conditioner for soil improvement, according to waiting the actual conditions improveing soil, product the present invention obtained is as carrier, add other chemical constituents needed for soil improvement by a certain percentage, or to the change that process product carries out in physical behavior, finally act on and wait to improve soil.
The beneficial effect that the present invention compared with prior art has is: the present invention utilizes changing food waste and agricultural solid waste to process, regardless of advantage city or rural area being all improved to environment, can also abundant economize energy, realize resource recycling, avoid the harm that the wrongful process of rubbish causes the mankind, invention increases the ecological benefits of changing food waste into resources product, reduce the cost payout of changing food waste process.
Accompanying drawing explanation
Fig. 1 is the course diagram of the preferred embodiment of the present invention.
Detailed description of the invention
For the understanding the present invention making those skilled in the art more clear and intuitive, below the present invention is further illustrated.
Be illustrated in figure 1 the preferred embodiments of the present invention: a kind of changing food waste and agricultural solid waste produce the method for soil conditioner raw material, comprise the following steps:
(1) Feedstock treating: after a) sorting removal impurity being crossed to kitchen waste, Solid-Liquid Separation is carried out by thick, thin two stage multiple filtrations, and rely on the switch of the digital quantity signal of pressure sensor to screen pack to control, accurately to control single changing food waste or farmland solid waste treating capacity, isolated oil water mixture enters multifeed clarifier and carries out profit layering, upper strata oil slick is collected, raw materials for production as biodiesel store or transhipment, and the solid residue centrifugal rinsing machine obtained carries out pulverizing after desalting processing is carried out in soft water rinsing stand-by; B) agricultural solid waste is pulverized directly stand-by after sorting removal impurity;
(2) subcritical aquathermolysis ?ozone oxidation is cleared up: the crushed material of eat kitchen solid refuse or agricultural solid waste and soft water are dropped into reactor for 1:2 ~ 10 in mass ratio, the initial temperature of reactor and pressure are respectively 20 DEG C, 0.1MPa, airtight rear reactor heater brings into operation, when conveying device carries the high-temperature steam of 220 ~ 374 DEG C to reach 1.5MPa to pressure in reactor in reactor simultaneously, ozone is inputted in reactor, finally reach the reaction pressure 2.5 ~ 22.0MPa cleared up needed for reaction, react the conveying of rear stopping steam and ozone, whole course of reaction continues 10 ~ 25 minutes, utilize ozone oxidation, sterilization, remove stench.
The equipment that wherein subcritical aquathermolysis ?ozone oxidation clears up process comprises high-temperature high-pressure reaction kettle, reactor heater, steam generator, steam delivery device, ozone generator and ozone conveying device, and described steam generator, ozone generator are connected with reactor with ozone conveying device respectively by steam delivery device; Described reactor built-in temperature, pressure sensor and video capture device; Ozone clears up treatment facility when actual treatment changing food waste or agricultural solid waste, according to treating capacity can some high-temperature high-pressure reaction kettles in parallel to improve disposal ability.
(3) clear up to carry out after reaction completes cooling, step-down, and by centrifugal dehydrator, Solid-Liquid Separation is carried out to product;
(4) isolated solid product is pulverized after drying and is carried out storing or transporting as soil conditioner raw material, and liquid product enters tank with use to be recycled; Wherein solid product is dried and is cleared up by the changing food waste of next batch or agricultural solid waste the heat discharged when rear high-temperature high-pressure reaction kettle cools step-down and come, and realizes recycling of heat energy, reaches energy-saving effect.
Further, the screen pack switch that pressure sensor controls, centrifugal rinsing machine, reactor, reactor heater, temperature sensor, pressure sensor, steam generator and steam delivery device, ozone generator, ozone conveying device, centrifugal dehydrator and conveying equipment are all connected with PLC, realize the Automated condtrol of whole technological process.
The above-mentioned soil conditioner raw material utilizing changing food waste and agricultural solid waste to obtain can directly as high-efficiency organic fertilizer or by processing after as soil conditioner for soil improvement, according to waiting the actual conditions improveing soil, product the present invention obtained is as carrier, add other chemical constituents needed for soil improvement by a certain percentage, or to the change that process product carries out in physical behavior, finally act on and wait to improve soil.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. produce a method for soil conditioner raw material by the method for changing food waste and agricultural solid waste, it is characterized in that, comprise the following steps:
(1) Feedstock treating: after a) sorting removal impurity being crossed to kitchen waste, carry out Solid-Liquid Separation, isolated oil water mixture enters multifeed clarifier and carries out profit layering, upper strata oil slick is collected, raw materials for production as biodiesel store or transhipment, and the solid residue obtained is pulverized stand-by after carrying out desalting processing; B) agricultural solid waste is removed after impurity through sorting and is pulverized reception use;
(2) subcritical aquathermolysis ?ozone oxidation is cleared up: the crushed material of eat kitchen solid refuse or agricultural solid waste and soft water are dropped into reactor for 1:2 ~ 10 in mass ratio, then in reactor, carry high-temperature steam and ozone, carry out subcritical water pyrolysis-ozone oxidation in reactor and clear up reaction;
(3) reacted that rear reactor carries out cooling, step-down, and Solid-Liquid Separation has been carried out to product;
(4) isolated solid product is pulverized after drying and is carried out storing or transporting as soil conditioner raw material, and liquid product enters tank, clears up required water add reactor as next solid waste.
2. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: in described step (1), the Solid-Liquid Separation of changing food waste is realized by thick, thin two stage multiple filtrations, and rely on the switch of the digital quantity signal of pressure sensor to screen pack to control, accurately to control single changing food waste or farmland solid waste treating capacity.
3. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: in described step (1), desalting processing is the soft water rinsing process that centrifugal rinsing machine carries out.
4. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: described step (2) Subcritical hydro-thermal Xie ?the ozone oxidation equipment of clearing up process comprise: high-temperature high-pressure reaction kettle, reactor heater, steam generator, steam delivery device, ozone generator and ozone conveying device, described steam generator, ozone generator are connected with reactor with ozone conveying device respectively by steam delivery device; Described reactor built-in temperature, pressure sensor and video capture device.
5. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: described step (2) Subcritical hydro-thermal Xie ?the ozone oxidation idiographic flow of clearing up treatment process be: first the crushed material of meal kitchen solid refuse or agricultural solid waste and water are dropped into reactor in proportion, airtight rear reactor heater brings into operation, steam delivery device carries high-temperature steam in reactor simultaneously, delivery of ozone in reactor is started after reaching preset pressure in reactor, finally reach the reaction pressure cleared up needed for reaction, react the conveying of rear stopping steam and ozone.
6. changing food waste according to claim 5 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: in described step (2), the temperature of high-temperature steam is 220 ~ 374 DEG C, the initial temperature of reactor and pressure are respectively 20 DEG C, 0.1MPa, the preset pressure of reactor is 1.5MPa, reaction pressure in reactor is 2.5 ~ 22.0MPa, and whole course of reaction continues 10 ~ 25min.
7. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: in described step (3), solid liquid phase is separated by centrifugal dehydrator.
8. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: the middle solid product of described step (4) is dried the heat discharged when clearing up rear high-temperature high-pressure reaction kettle cooling step-down by the changing food waste of next batch or agricultural solid waste and come.
9. changing food waste according to claim 1 and agricultural solid waste produce the method for soil conditioner raw material, it is characterized in that: the screen pack switch that described pressure sensor controls, centrifugal rinsing machine, reactor, reactor heater, temperature sensor, pressure sensor, steam generator, steam delivery device, ozone generator, ozone conveying device, centrifugal dehydrator and conveying equipment are all connected with PLC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410464862.XA CN104259177A (en) | 2014-09-12 | 2014-09-12 | Method for producing soil conditioner raw material by using kitchen garbage and solid agriculture and forestry wastes |
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| CN201410464862.XA CN104259177A (en) | 2014-09-12 | 2014-09-12 | Method for producing soil conditioner raw material by using kitchen garbage and solid agriculture and forestry wastes |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104798521A (en) * | 2015-04-10 | 2015-07-29 | 中山市吉尔科研技术服务有限公司 | Water and fertilizer irrigation machine with cooling device and reduced heat loss |
| CN104923552A (en) * | 2015-07-09 | 2015-09-23 | 青海洁神环境能源产业有限公司 | Method for sub-critical treatment of kitchen waste |
| CN105032898A (en) * | 2015-08-04 | 2015-11-11 | 徐浩然 | Method and system for processing in-situ kitchen waste |
| CN105060274A (en) * | 2015-08-12 | 2015-11-18 | 重庆大学 | Urban organic waste pyrolytic biochar, soil conditioner and use method of soil conditioner |
| CN107983752A (en) * | 2017-12-10 | 2018-05-04 | 宁波高新区若水智创科技有限公司 | A kind of device and method of energy conservation and environmental protection processing kitchen garbage |
| CN108373921A (en) * | 2018-01-03 | 2018-08-07 | 上海环垦土壤修复工程技术有限公司 | A kind of soil conditioner and the preparation method and application thereof |
| CN110434150A (en) * | 2019-08-14 | 2019-11-12 | 浙江阳鹭环保科技有限公司 | Sorting consumer waste treatment process |
| CN111925826A (en) * | 2020-07-21 | 2020-11-13 | 重庆大学 | Wet-type pyrolysis and gasification treatment method for kitchen waste |
| CN112058854A (en) * | 2020-08-04 | 2020-12-11 | 北京环境工程技术有限公司 | Kitchen waste dehydration composting process and system |
| CN112194304A (en) * | 2020-09-27 | 2021-01-08 | 深圳市腾浪再生资源发展有限公司 | Efficient evaporation and filtration process method for high-concentration kitchen wastewater |
| CN115289475A (en) * | 2022-08-04 | 2022-11-04 | 四川省天晟源环保股份有限公司 | A kind of solid waste resource utilization method |
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| CN105032898A (en) * | 2015-08-04 | 2015-11-11 | 徐浩然 | Method and system for processing in-situ kitchen waste |
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| CN107983752A (en) * | 2017-12-10 | 2018-05-04 | 宁波高新区若水智创科技有限公司 | A kind of device and method of energy conservation and environmental protection processing kitchen garbage |
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| CN111925826A (en) * | 2020-07-21 | 2020-11-13 | 重庆大学 | Wet-type pyrolysis and gasification treatment method for kitchen waste |
| CN112058854A (en) * | 2020-08-04 | 2020-12-11 | 北京环境工程技术有限公司 | Kitchen waste dehydration composting process and system |
| CN112194304A (en) * | 2020-09-27 | 2021-01-08 | 深圳市腾浪再生资源发展有限公司 | Efficient evaporation and filtration process method for high-concentration kitchen wastewater |
| CN115289475A (en) * | 2022-08-04 | 2022-11-04 | 四川省天晟源环保股份有限公司 | A kind of solid waste resource utilization method |
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Application publication date: 20150107 |