CN110834030A - Kitchen waste treatment system - Google Patents
Kitchen waste treatment system Download PDFInfo
- Publication number
- CN110834030A CN110834030A CN201911343806.XA CN201911343806A CN110834030A CN 110834030 A CN110834030 A CN 110834030A CN 201911343806 A CN201911343806 A CN 201911343806A CN 110834030 A CN110834030 A CN 110834030A
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- Prior art keywords
- kitchen waste
- gas
- liquid
- waste treatment
- treatment system
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- 239000010806 kitchen waste Substances 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000000855 fermentation Methods 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 20
- 230000004151 fermentation Effects 0.000 claims abstract description 17
- 238000004332 deodorization Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000003337 fertilizer Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000010813 municipal solid waste Substances 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 bones Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of kitchen waste recycling, in particular to a kitchen waste treatment system. The kitchen waste treatment system comprises: the system comprises a kitchen waste collection system, a pretreatment system, a fermentation tank, a filter pressing system, a liquid storage tank, a microwave drying system, a gas collection system, a generator and a deodorization system. The invention provides a kitchen waste treatment system, which adopts a solid-liquid separation design, wherein solid is dried and then is used as fertilizer or is subjected to incineration decrement harmless treatment, liquid is fermented and then discharged into municipal sewage to be discharged into a drainage pipe network for standard discharge, and the kitchen waste treatment system has the advantages of high efficiency, low energy consumption, high automation degree and the like.
Description
Technical Field
The invention relates to the technical field of kitchen waste recycling, in particular to kitchen waste treatment.
Technical Field
Along with the improvement of living standard of people, the food demand on dining tables is more and more, and the kitchen waste generated in the same way is more and more. The kitchen waste is mainly derived from food waste and kitchen waste, has high organic matter content, high salinity, high oil content and the like, and has different regions and corresponding kitchen waste. If the kitchen waste is not properly treated, serious environmental pollution can be caused, the treatment cost is high, and the treatment of the kitchen waste is more and more focused in China (China has a large population and the quantity of the kitchen waste is large). The existing garbage disposal system has the following problems:
1, the treatment period of the kitchen waste is long;
2, the energy consumption for treating the kitchen waste is high;
3, low conversion rate and the like.
Disclosure of Invention
The invention aims to solve the technical problems of the existing garbage treatment, and provides a kitchen garbage treatment system, which aims to solve the problems of long treatment period, high energy consumption, low conversion rate and the like of the kitchen garbage.
In order to achieve the purpose, the invention adopts the following technical scheme:
a kitchen waste treatment system is designed and comprises a kitchen waste collection system, a pretreatment system, a fermentation tank, a filter pressing system, a liquid storage tank, a microwave drying system, a gas collection system, a generator and a deodorization system. The system comprises the following specific process steps:
(1) conveying the collected kitchen waste to pretreatment through a conveying device;
(2) sorting, dehydrating and crushing the kitchen waste after pretreatment;
(3) sending the pretreated solid part into a filter press for filter pressing, dividing the pretreated solid part into a solid part and a liquid part, and storing the liquid part into a liquid storage tank;
(4) drying the solid part in the step (3) in a microwave dryer, condensing the dried gas, treating the condensed gas as tail gas, refluxing the condensed liquid to a liquid storage tank for storage, and directly selling the dried solid as a fertilizer or burning the dried solid;
(5) conveying the liquid stored in the liquid storage tank in the step (3) to a fermentation tank for anaerobic fermentation;
(6) collecting the gas generated by fermentation in the step (5), and fermenting the liquid to achieve the standard discharge of discharging the urban sewage into a drainage pipe network;
(7) introducing the gas generated in the step (6) into a gas collecting system and connecting the gas collecting system with a generator;
(8) connecting the generator in the step (7) with the power consumption equipment of the whole kitchen waste treatment system to provide electric energy, and providing redundant electric energy to the outside;
(9) the waste gas of the whole system is treated by the deodorization system and then discharged.
Further, the kitchen waste in the step (1) is stacked by kitchen waste transported from various places and is conveyed to the feed hopper by an automatic conveying device.
Further, the automatic conveying device comprises an automatic feeding device and a conveying device.
Furthermore, conveyor contains gyro wheel and conveyer belt, and the conveyer belt has the baffle conveyer belt of preventing the edge leakage function, prevents to transport in-process swill overflow, is made by stainless steel material, and the anticorrosive paint is scribbled on the top layer, promotes the life of conveyer belt.
Further, the pretreatment in the step (2) is composed of a feed hopper, a conveyor, a sorting machine, a dehydrator and a pulverizer.
Furthermore, the sorting machine mainly sorts out sundries in food, wherein the sundries comprise plastics, metals, ceramics, bones, wood products and the like.
Further, in the filter press in the step (3), the solid-liquid separation is performed on the crushed solid again to ensure that the water content of the solid is lower than 50%, and the separated liquid enters a liquid storage pool for recycling.
Further, the step (4) of microwave drying is to heat and stir the solid and evaporate water rapidly, so that the water content of the solid is lower than 20%, and the low water content is ensured when the solid is used as a fertilizer or is incinerated.
Furthermore, the water after the steam evaporated is condensed flows back to the liquid storage tank.
Further, the liquid in the liquid storage pool in the step (5) is injected into the fermentation tank by the liquid pump after being inoculated.
Further, the fermentation tank in the step (5) adopts anaerobic fermentation for 12 h-2 d, and the fermentation has the advantages of strong adaptability and high gas production.
Furthermore, the liquid generated in the fermentation process in the step (6) is collected by a gas collecting system, and the fermented liquid can reach the standard discharge of urban sewage into a drainage pipe network.
Further, the gas collecting system in the step (7) comprises gas purification and gas collection.
Further, the gas cleaning comprises desulfurization and drying of the gas.
Further, the generator in the step (7) is a biogas generator and is connected with the whole kitchen waste treatment system.
Further, the deodorization system in the step (9) comprises an ozone generating device, an ultraviolet light deodorization device and a scrubbing tower.
Furthermore, the ultraviolet deodorization device uses a microwave-excited ultraviolet lamp tube to perform ultraviolet deodorization.
The invention has the beneficial effects that:
1. solid-liquid separation is adopted to ferment the liquid, so that the method has the advantages of stable fermentation, large gas production and the like, the treatment efficiency of the kitchen waste is improved, and the amount of solid waste can be greatly reduced by adopting a method for preparing fertilizer or burning reduction for the solid;
2. the system has high automation degree and reduces manual operation;
3. the microwave drying is adopted, so that energy and time are saved;
4. the biogas power generation is adopted to directly provide electric energy for the system, so that the energy utilization is improved, and the dependence of the system on external energy is reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is a flow chart of a pretreatment process of the present invention.
Detailed Description
The invention provides a kitchen waste treatment system, which is further explained with reference to the attached drawings and the detailed description.
The kitchen waste treatment system of the embodiment comprises the following specific steps:
1) pouring kitchen waste collected from various places into a kitchen waste collecting pool, putting the kitchen waste into a conveyor belt on a conveying device through an automatic feeding device, and conveying the kitchen waste into a feeding hopper for pretreatment;
2) the feed hopper is connected with the conveying device, the kitchen waste is conveyed into the sorting machine, and sundries in the kitchen waste are sorted out, wherein the sundries comprise plastics, metals, ceramics, bones, wooden products and the like;
3) the sorted kitchen waste is subjected to solid-liquid separation through a dehydrator, in order to improve the efficiency of the whole system for treating the kitchen waste, the kitchen waste is subjected to solid-liquid separation treatment, a solid part is sent to a crusher, and a liquid part enters a liquid storage tank;
4) the kitchen waste is crushed by a crusher and then enters a filter press for filter pressing treatment, so that the kitchen waste is further subjected to solid-liquid separation, the liquid after filter pressing is sent to a liquid storage tank, and the water content of a solid part can be reduced to 40-60%;
5) microwave drying the solid part in the step 4) to enable the water content of the solid to be 20%, enabling the liquid after the evaporation gas is condensed to flow back to a liquid storage pool, and introducing the gas into a deodorization system;
6) after the solid after microwave drying reaches low water content, selling the kitchen waste as a fertilizer or burning the kitchen waste to reduce the quantity;
7) after inoculation, pumping the liquid in the liquid storage tank into a fermentation tank through a liquid pump for anaerobic fermentation for 12 h-2 d;
8) the liquid produced in the fermentation process is collected by a gas collecting system, and the fermented liquid can reach the standard discharge of urban sewage into a drainage pipe network;
9) because the gas contains a certain amount of sulfur-containing substances and moisture, the gas is stored after being subjected to fine desulfurization, drying and purification;
10) the stored gas part generates electricity through a methane generator, the generated electric energy provides electricity for the whole kitchen waste treatment system, and the redundant electric energy is provided for the outside;
11) the kitchen waste is strong in taste, so that the whole treatment system is in a closed space, and negative pressure air extraction is carried out, the air is extracted, enters an ozone generator and is purified by ultraviolet light, and then is introduced into a gas washing tower to be washed to be qualified and then is discharged.
Through the steps, the reduction and harmless treatment of the kitchen waste can be effectively realized, and the kitchen waste is prevented from accumulating to pollute the environment and influence the ecology.
Claims (9)
1. The kitchen waste treatment system is characterized by comprising a kitchen waste collection system, a pretreatment system, a fermentation tank, a filter press system, a liquid storage tank, a microwave drying system, a gas collection system, a generator and a deodorization system, and comprises the following steps:
(1) conveying the collected kitchen waste to pretreatment through a conveying device;
(2) sorting, dehydrating and crushing the kitchen waste after pretreatment;
(3) sending the pretreated solid part into a filter press for filter pressing, dividing the pretreated solid part into a solid part and a liquid part, and storing the liquid part into a liquid storage tank;
(4) drying the solid part in the step (3) in a microwave dryer, condensing the dried gas, and then introducing the condensed gas into a deodorization system, wherein the condensed liquid flows back to a liquid storage tank for storage, and the dried solid can be sold as a fertilizer or incinerated;
(5) conveying the liquid stored in the liquid storage tank in the step (3) to a fermentation tank for anaerobic fermentation;
(6) collecting the gas generated by fermentation in the step (5), and fermenting the liquid to achieve the standard discharge of discharging the urban sewage into a drainage pipe network;
(7) introducing the gas generated in the step (6) into a gas collecting system and connecting the gas collecting system with a generator;
(8) connecting the generator in the step (7) with the power consumption equipment of the whole kitchen waste treatment system to provide electric energy, and providing redundant electric energy to the outside;
(9) the waste gas of the whole system is treated by the deodorization system and then discharged.
2. The kitchen waste treatment system according to claim 1, wherein the conveyor in step (1) is an automatic conveyor, and is composed of an automatic feeding device and a conveying device.
3. The kitchen waste treatment system according to claim 1, wherein the pretreatment in step (2) is composed of a feed hopper, a conveyor, a sorting machine, a dehydrator and a pulverizer; the sorting machine is mainly used for sorting sundries in food, wherein the sundries comprise plastics, metals, ceramics, wood products and the like.
4. The kitchen waste treatment system according to claim 1, wherein in the step (3), the solid part enters a filter press for filter pressing, so that the water content of the solid is reduced to 50%.
5. The kitchen waste treatment system according to claim 1, wherein the microwave drying in the step (4) has the functions of microwave heating and stirring, so that the evaporation efficiency of water in the solid is improved; the dried kitchen waste has high organic components and can be used for fertilizer treatment; and the incineration treatment is to carry out incineration decrement treatment on the dried kitchen waste.
6. The kitchen waste treatment system according to claim 1, wherein in the step (5), the liquid in the liquid storage tank is pumped into the fermentation tank for fermentation by the liquid pump after being inoculated.
7. The kitchen waste treatment system according to claim 1, wherein the fermentation in step (6) is performed by a gas collection system, and the fermented liquid can reach the standard discharge of municipal sewage into a drainage pipe network.
8. The kitchen waste treatment system according to claim 1, wherein the gas collection system in step (7) comprises a gas purification device and a gas storage device, and the gas purification device comprises desulfurization and drying purification treatment.
9. The kitchen waste treatment system according to claim 1, wherein the deodorization system in step (9) comprises an ozone generation device, an ultraviolet light deodorization device and a gas washing tower, and the ultraviolet deodorization device is formed by exciting an ultraviolet lamp tube with microwave to perform ultraviolet deodorization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343806.XA CN110834030A (en) | 2019-12-24 | 2019-12-24 | Kitchen waste treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343806.XA CN110834030A (en) | 2019-12-24 | 2019-12-24 | Kitchen waste treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110834030A true CN110834030A (en) | 2020-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343806.XA Pending CN110834030A (en) | 2019-12-24 | 2019-12-24 | Kitchen waste treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110834030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360027A (en) * | 2020-03-16 | 2020-07-03 | 广东利世康低碳科技有限公司 | Small intensive kitchen waste treatment method |
| CN111420965A (en) * | 2020-03-19 | 2020-07-17 | 长春圣康环保设备有限公司 | Household garbage miniaturization treatment process |
-
2019
- 2019-12-24 CN CN201911343806.XA patent/CN110834030A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360027A (en) * | 2020-03-16 | 2020-07-03 | 广东利世康低碳科技有限公司 | Small intensive kitchen waste treatment method |
| CN111420965A (en) * | 2020-03-19 | 2020-07-17 | 长春圣康环保设备有限公司 | Household garbage miniaturization treatment process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200225 |
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| WD01 | Invention patent application deemed withdrawn after publication |