CN104651413A - Recycling treatment method and system for kitchen waste - Google Patents
Recycling treatment method and system for kitchen waste Download PDFInfo
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- CN104651413A CN104651413A CN201510061085.9A CN201510061085A CN104651413A CN 104651413 A CN104651413 A CN 104651413A CN 201510061085 A CN201510061085 A CN 201510061085A CN 104651413 A CN104651413 A CN 104651413A
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses a recycling treatment method and system for kitchen waste. The method comprises the following steps: (1) performing integrated pretreatment on the kitchen waste to be treated: (a) hydraulically separating the solid particles which cannot be biologically degraded in the kitchen waste and removing the solid particles; (b) heating the hydraulically separated material to melt out grease in the material, and performing air floatation degreasing to obtain a degreased material; (c) breaking and pulping the material, and discharging the grit impurity in the material and the slurry material to be treated from the bottom surface and side surface of a container respectively; and (d) adjusting the pH value of the slurry material after the breaking and pulping to 6.5-7.5; (2) performing anaerobic digestion treatment on the slurry material to generate biogas; and (3) purifying the biogas generated after the anaerobic digestion to obtain methane with predetermined concentration value. The method can realize efficient recycling of resources as well as low loss of output equipment.
Description
Technical field
The present invention relates to a kind of reclamation of solid wastes processing technology field, particularly relate to a kind of recycling processing method and system of changing food waste.
Background technology
Along with the raising of Economic development and living standards of the people, the increase of city organic waste generation causes the extensive concern, particularly changing food waste of people.According to investigations, the city of the millions populations such as Beijing, Shanghai, Shenzhen and Guangzhou, the generation of changing food waste all more than 1000t/d, and is the trend risen year by year.
Due in changing food waste containing a large amount of organism and grease, therefore some illegal retailers take simple and easy method from changing food waste, extract grease to be again processed into food and drink oily; Also have a considerable amount of changing food waste to flow into the plant of surrounding city, cultivate " swill pig ", these ways directly or indirectly cause great harm to food safety.But, if directly these solid waste are carried out landfill or stacking, by producing the serious secondary pollution problem such as a large amount of stench, high density percolate and greenhouse gases, bad impact is caused on urban environmental hygiene.
At present, the treatment process of changing food waste, the material after process mostly in acid, is unfavorable for carrying out anaerobic reaction.If the patent No. is the Chinese utility model patent of CN103191907, which disclose a kind of integrated technology technique processing diet and kitchen wastes, the processing step of this technical matters is complicated, in the Component seperation technology of changing food waste, direct employing dissolved air flotation goes out the non-biodegradation component of changing food waste, again biodegradable moieties is carried out extruding squeezing mode, adopt the mode be separated to carry out different process to liquid phase with solid phase organic matter.
Based on this, because changing food waste directly adopts dissolved air flotation, the as easy as rolling off a log amount of grease that makes is taken away by adsorptives such as plastics, have lost amount of grease amount, is unfavorable for the recycling of resource.In addition, in this technique, the viscosity for the treatment of material is higher, can increase the energy consumption of handling equipment, be unfavorable for save energy.
Therefore, in process changing food waste, how to avoid that the rate of recovery of resource is low and handling equipment energy consumption is high, become current people's problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of recycling processing method and system of changing food waste, in processing changing food waste, can realize the high efficiente callback of resource, and the low-loss of output equipment.
For achieving the above object, the invention provides a kind of recycling processing method of changing food waste, comprising the steps:
A recycling processing method for changing food waste, comprises the steps:
Step (1), carries out integrated pre-treatment to pending changing food waste, and it comprises following sub-step further:
Sub-step (a) waterpower sub-elects non-biodegradable solid particulate in changing food waste, and removes;
Sub-step (b), heats the material after waterpower sorting, makes the grease in material melt, then carries out air supporting degreasing, obtain degreasing material;
Sub-step (c), carries out broken slurrying to the material after sorting and degreasing, and the grit impurity in material and pending pasty material is discharged from the bottom surface of container containing and side respectively;
Sub-step (d), is adjusted to 6.5 ~ 7.5 by the pH value of the pasty material after broken slurrying;
Step (2), carries out Anaerobic Digestion to described pasty material, and produces biogas;
Step (3), purifies the biogas produced after described anaerobic digestion, to obtain the methane of predetermined concentration value.
Further; also produce natural pond slag after described pasty material anaerobic digestion, when described natural pond slag Lower heat value is higher than 1200kcal/kg, utilize tablets press to be made into shaping solid fuel; when described natural pond slag calorific value is lower than 1200kcal/kg, aerobic composting process is utilized to be made into fertilizer.
Further, the solid particulate that can not be biodegradable in described sub-step (1) comprises the isolated lightweight floating matter of waterpower and heavy deposits.
Further, in described step (2) after formation degreasing material, the lightweight floating matter and heavy deposits step of removing material surface is also comprised.
Further, the lightweight floating matter on described removal material surface is for removing lightweight floating matter by scraping slag technique.
Further, described step heats waterpower sorting material in (2), obtains degreasing material comprise further to remove grease:
Treating material is heated and leaves standstill, wherein solid grease is melted;
Air-float technology is utilized to be separated from pasty material by grease.
Further, the described grease of separation is for processing soap.
Conceive based on foregoing invention, the present invention can also provide a kind of recycling treatment system of changing food waste, comprise: anaerobic digestion module, for carrying out Anaerobic Digestion to the material received, this system also comprises: integrated pre-processing module, after carrying out integrated pre-treatment to changing food waste, supply anaerobic digestion module, described integrated pre-processing module comprises further:
Waterpower separation unit, add appropriate water according to the moisture situation of material, utilize the density difference of different components in changing food waste, waterpower isolates the solid particle material that can not be biodegradable, and remove, the described solid particulate that can not be biodegradable comprises lightweight floating matter and heavy deposits;
Degrease unit, for making the treating material after sorting under heating static condition, utilizing air-float technology to be separated from material by grease, obtaining degreasing material, and remove floating matter further;
Broken slurrying unit, for carrying out integrated broken slurrying to the pending changing food waste organic constituent material after waterpower sorting and degreasing, and grit impurity in material and pending pasty material are discharged from the different directions of container containing respectively, the pasty material supply anaerobic digestion module obtained.
Further, described integrated pre-processing module also comprises regulon, for the pH value of the pasty material after broken slurrying cell processing is adjusted to 6.5 ~ 7.5, and the pasty material after regulating is supplied anaerobic digestion module.
Further, described integrated pre-processing module also comprises:
Impurity elimination unit, for removing the floating matter on the pending pasty material surface in described broken slurrying unit.
Compared with prior art, the recycling processing method of changing food waste provided by the present invention and system have following remarkable advantage:
(1) the present invention is in integrated pre-treatment, adopt waterpower sorting step, non-biodegradable solid particulate in changing food waste is removed, the adhesive capacity of grease on the solid particulate that this minimizing technology can reduce removal effectively, and then be conducive to reclaiming again of grease;
(2) due in the pretreated broken pulping process of integration, the features such as changing food waste high viscosity, High water cut are taken into full account, utilize the integrated pretreatment system of waterpower sorting, the water ratio for the treatment of material is improved, partial organic substances is dissolved, viscosity reduces, utilize the waterpower characteristic distributions of the material of different densities simultaneously, while making slurry fragmentation mix, reach the object of desanding, removal of impurities, reduce the energy consumption of handling equipment by reducing material viscosity, simpler than the operation of existing conventional treatment method, facility investment is low;
(3) in actual process, in anaerobic digestion reaction process, solids content is higher, and organic loading is higher, and system more easily acidifying occurs; Based on this, first the present invention carries out integrated pre-treatment to food waste, comparatively thorough for the impurity treatment such as inorganics, grease in pretreatment technology, and the pH value of pasty material is chosen rationally, preferable ph is 6.5 ~ 7.5, makes through integration pretreated material solid content lower, can start anaerobic digestion under lower organic loading condition, in operational process, increase load gradually reach balance gradually to make microbial environment, and then simplify the treatment process of anaerobic digestion;
(4) in treating processes by oil removal by air bubbling again after heating, not only can remove in raw material can the gentle oil slick of oil slick, also can remove the solid oil compositions such as the animal tallow of high level in changing food waste, be conducive to making full use of of resource;
(5) due to when carrying out Anaerobic Digestion, to solid content not requirement, in particular, simplify the pretreatment technology of anaerobic digestion, when processing the changing food waste of higher solid content, so the volume of reactor can be made greatly to reduce, reduced footprint thus, processing efficiency also can improve thereupon;
(6) grease that the pretreatment stage in treating processes produces can be used for processing soap, and the biogas produced after anaerobic digestion can make methane; Natural pond slag is in order to producing shaped solid fuel or fertilizer simultaneously, makes changing food waste obtain sufficient recycling;
(7) the present invention is to the recycling treatment of changing food waste, achieves recycling, and environmental pollution is little.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of processing method of changing food waste into resources in the embodiment of the present invention one;
Fig. 2 is the particular flow sheet of step 101 in method described in Fig. 1 embodiment one;
Fig. 3 is the structured flowchart of the Resourceful treatment system for kitchen waste described in the embodiment of the present invention two;
Fig. 4 is the structured flowchart of integrated pre-processing module in system described in Fig. 3 embodiment two of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further introduced, but not as a limitation of the invention.
Shown in figure 1, a kind of recycling processing method of changing food waste, comprises the following steps:
Step 101, integrated pre-treatment is carried out to pending changing food waste, remove the impurity and grease that can not be biodegradable in changing food waste, being regulated by changing food waste afterwards becomes the pasty material that pH value is 6.5 ~ 7.5, for prerequisite is created in follow-up anaerobic digestion reaction; Further, as shown in Figure 2, it comprises following sub-step:
Sub-step 1011, roughly select storage: carry out ragging by collecting the changing food waste come, isolate the large granular materials that wherein can not be biodegradable, such as, glass, stone, bone, each metalloid, shell etc., then send in storage facility and store, above-mentioned sorting can be mechanically or manual type realize, and preferred further, the material particular diameter of the pending changing food waste sub-elected is less than 5cm, to reduce the requirement to subsequent disposal;
Wherein, also can directly carry out following sub-step 1012 in the recycling processing method of changing food waste of the present invention, be sub-elected the large granular materials that can not be biodegradable in changing food waste by waterpower.
Sub-step 1012, sub-elect non-biodegradable inorganic component material: waterpower sorting is carried out to the material of storage, the density difference of material different components is utilized to isolate the floating inorganic component of upper strata lightweight and bottom heavy inorganic component, in the process, density is lighter than the impurity of pasty material density (such as, plastic paper, toothpick etc.) swim in the surface of pasty material, now can collect by scraping slag, then remove, the impurity of heavy amount is got rid of by the bottom of the container of splendid attire material.
It should be noted that, owing to adopting waterpower sorting step in the present invention, non-biodegradable solid particulate in changing food waste is removed, the adhesive capacity of grease on the solid particulate that this minimizing technology can reduce removal effectively, and then be conducive to reclaiming again of grease.
Below for directly to adopt air supporting sorting to changing food waste, and first waterpower sorting is adopted to changing food waste, then carries out the situation of the grease extracted amount of air supporting sorting:
Wherein, test condition is:
1, sample source: unit of Shenzhen dining room changing food waste.
2, the Date of Sampling: 22 days-March 24 March in 2013.
3, the waste deposit time: be less than 1 day, supplied materials on same day sampling and measuring on the same day.
In addition, due to characteristics such as changing food waste high viscosity, High water cut, be unfavorable for the efficient process of following broken pulping process, therefore, the present invention utilizes the integrated pretreatment system of waterpower sorting, the water ratio for the treatment of material is improved, partial organic substances is dissolved, viscosity reduces, and utilizes the waterpower characteristic distributions of the material of different densities simultaneously, while making slurry fragmentation mix, reach the object of desanding, removal of impurities, reduce the energy consumption of handling equipment by reducing material viscosity, simpler than the operation of existing conventional treatment method, facility investment is low.
Below for contrast adopts common sorting (namely as directly adopted air supporting sorting), and after adopting waterpower sorting, under different thinning ratio, in output equipment, apply the situation of rotor viscosity meter material viscosity:
Wherein, test condition is:
1, sample source: unit of Shenzhen dining room changing food waste.
2, the Date of Sampling :-25 days on the 22nd March in 2013.
3, the waste deposit time: be less than 1 day, supplied materials on same day sampling and measuring on the same day.
4, viscosity determining procedure: adopt rotor viscometer to measure, measuring temperature is under room temperature.
Wherein, TS represents total solids.
Sub-step 1013, oil removal treatment: heating oil removing is carried out to the material after sub-step 1012 process also standing separation, keep treating material temperature at 35 ~ 60 DEG C, this temperature range value needs to ensure that the solid grease in treating material melts and is usually unlikely to reach boiling point, and mainly can oil slick and dispersed oil form exist, be conducive to removing grease completely; Now, air-float technology can be utilized to be separated by the grease in treating material, to obtain degreasing material, isolated grease may be used for processing soap;
Sub-step 1014, break process, by the organic materials rapid stirring after degreasing, material fragmentation is mixed and made into uniform pending suspended nitride, above-mentioned stirring, preferably utilizes axial flow turbine stirring rake to carry out rapid stirring, and while material is broken, by the effect of axial flow, the grit impurity in material is discharged from bottom, to remove the composition that can not be biodegradable contained in pending pasty material further;
Sub-step 1015, adjust ph: such as but not limited to alkali (such as, NaHCO
3) pH value of the degreasing pasty material after separation grease is adjusted to a certain determined value between 6.5 ~ 7.5.
Step 102, Anaerobic Digestion: pretreated material integrated in step 101 is sent into high solid anaerobic digestion reactor and carries out Anaerobic Digestion, now (namely treatment condition can select arbitrarily the middle temperature of anaerobic digestion, (35 ± 3) DEG C) or high temperature is (namely, (55 ± 3) DEG C) temperature condition, and hydraulic detention time is for example and without limitation to 10 ~ 30 days.
In this step, solid content for reactant does not have requirement, thereby simplify the reaction conditions of anaerobic digestion, technique is simplified further, this is due to comparatively thorough for the impurity treatment such as inorganics, grease in pretreatment technology, and the pH value of pasty material (being preferably 6.5 ~ 7.5) is chosen rationally and realized.Because solids content is higher in anaerobic digestion reaction process, organic loading is higher, and system more easily acidifying occurs, therefore, comparatively optimize, should take to start anaerobic digestion under lower organic loading condition, in operational process, increase load gradually reach balance gradually to make microbial environment.
Be below the average gas production rate situation of pasty material anaerobic stabilization device under different PH, wherein, test condition is, anaerobism temperature: 54 ~ 57 DEG C, useful volume: 9.5L, charging TS:15%, VS/TS:80%, wherein, TS represents total solids, and VS represents volatile solid.
| Meal kitchen material pH scope | Anaerobic stabilization phase average gas production rate |
| 6.0～6.3 | 4.5～5.8L/d |
| 6.5～7.5 | 18.0～18.9L/d |
| 7.8～8.0 | 8.1～9.0L/d |
What also need supplementary notes for this step is a bit, in Anaerobic Digestion process, situation is carried out in order to the whole treating processes of dynamic monitoring better, need the monitoring to indexs such as the turnover doses in this process, pH value, temperature and the redox potential in reactor, biogas generations, this monitor mode can adopt of the prior art any one can monitor mode, do not repeat them here.
Step 103, the recycling treatment of anaerobic digestion product: the biogas that anaerobic digestion produces is purified through steps such as dehydration, sulphur removal, and the methane after purification can be used as clean onboard fuel; In addition; discharging after anaerobic digestion produces natural pond slag after processed; when described natural pond slag Lower heat value is higher than 1200kcal/kg; tablets press can be utilized to be made into shaping solid fuel, when described natural pond slag calorific value is lower than 1200kcal/kg, to utilize the mode of aerobic compost to make fertilizer; preferably; composting conditions may be controlled to: natural pond slag water ratio is about 60%, and top temperature is 60 DEG C, air demand 30m
3/ th, the compost time is 10 days.
As can be seen from the method that above-described embodiment proposes, utilize aforesaid method to carry out recycling treatment tool to changing food waste and have the following advantages:
(1) the present invention is in integrated pre-treatment, adopt waterpower sorting step, non-biodegradable solid particulate in changing food waste is removed, the adhesive capacity of grease on the solid particulate that this minimizing technology can reduce removal effectively, and then be conducive to reclaiming again of grease;
(2) due in the pretreated broken pulping process of integration, the features such as changing food waste high viscosity, High water cut are taken into full account, utilize the integrated pretreatment system of waterpower sorting, the water ratio for the treatment of material is improved, partial organic substances is dissolved, viscosity reduces, utilize the waterpower characteristic distributions of the material of different densities simultaneously, while making slurry fragmentation mix, reach the object of desanding, removal of impurities, reduce the energy consumption of handling equipment by reducing material viscosity, simpler than the operation of existing conventional treatment method, facility investment is low;
(3) in actual process, in anaerobic digestion reaction process, solids content is higher, and organic loading is higher, and system more easily acidifying occurs; Based on this, first the present invention carries out integrated pre-treatment to food waste, comparatively thorough for the impurity treatment such as inorganics, grease in pretreatment technology, and the pH value of pasty material is chosen rationally, preferable ph is 6.5 ~ 7.5, makes through integration pretreated material solid content lower, can start anaerobic digestion under lower organic loading condition, in operational process, increase load gradually reach balance gradually to make microbial environment, and then simplify the treatment process of anaerobic digestion;
(4) in treating processes by oil removal by air bubbling again after heating, not only can remove in raw material can the gentle oil slick of oil slick, also can remove the solid oil compositions such as the animal tallow of high level in changing food waste, be conducive to making full use of of resource;
(5) due to when carrying out Anaerobic Digestion, to solid content not requirement, in particular, simplify the pretreatment technology of anaerobic digestion, when processing the changing food waste of higher solid content, so the volume of reactor can be made greatly to reduce, reduced footprint thus, processing efficiency also can improve thereupon;
(6) grease that the pretreatment stage in treating processes produces can be used for processing soap, and the biogas produced after anaerobic digestion can make methane; Natural pond slag is in order to producing shaped solid fuel or fertilizer simultaneously, makes changing food waste obtain sufficient recycling;
(7) the present invention is to the recycling treatment of changing food waste, achieves recycling, and environmental pollution is little.
Correspondingly, in another embodiment of the present invention, can also provide a kind of recycling treatment system of changing food waste, shown in figure 3, described system comprises: anaerobic digestion module and integrated pre-processing module, wherein:
Integration pre-processing module 201, for making pending changing food waste after removing the impurity and grease that can not be biodegradable, becoming the pasty material that pH value is 6.5 ~ 7.5, and being supplied to anaerobic digestion unit.
In a preferred embodiment, as shown in Figure 4, integrated pre-processing module 201 comprises waterpower separation unit 2011, degrease unit 2012, broken slurrying unit 2013 and impurity elimination unit 2014 and regulon 2015 further, wherein:
Waterpower separation unit 2011, adds appropriate water according to the moisture situation of material, utilizes the density difference of different components in changing food waste, and waterpower isolates the inorganic component material that lightweight floating matter and heavy deposits two portions can not be biodegradable; In the process, the impurity (such as, plastic paper, toothpick etc.) that density is lighter than pasty material density swims in the surface of pasty material, and now can collect by scraping slag, then removing, heavier feeds is discharged by the bottom of container containing;
Degrease unit 2012, for making the treating material after waterpower sorting under heating static condition, utilizing air-float technology to be separated from material by grease, obtaining degreasing material; Wherein, described time of repose is 0.5 ~ 3 hour, and Heating temperature remains on 35 ~ 60 DEG C, and this temperature range value ensure that the solid grease in pasty material melts and is usually unlikely to reach boiling point, and mainly can oil slick and dispersed oil form exist, favourable use removes grease completely;
Broken slurrying unit 2013, for carrying out integrated broken slurrying to the pending changing food waste organic constituent material after waterpower sorting and degreasing, and grit impurity in material and pending pasty material respectively from different directions (preferably the side of processing vessel and bottom surface from this module) discharge; In this module, preferably, utilize axial flow turbine stirring rake to carry out rapid stirring, preferred, described axial flow turbine stirring rake has knive-edge marginal texture, to utilize crushing effect.
Impurity elimination unit 2014, for removing the floating matter on the pending pasty material surface in described broken slurrying unit 2013 further, it is scraped slag instrument such as but not limited to employing and removes; Afterwards again by organic for pulpous state degreasing material supply regulon.
Regulon 2015, for the pH value of the pasty material after impurity elimination cell processing is adjusted to 6.5 ~ 7.5, and supplies anaerobic digestion unit by the pasty material after regulating.
Anaerobic digestion module 202, carries out Anaerobic Digestion to organic degreasing material of the integrated pre-processing module 201 received; To produce biogas and natural pond slag.
Said system is needed to illustrate a bit: the material transferring between above-mentioned anaerobic digestion module and pre-processing module and relevant control can adopt technology well-known to those skilled in the art to realize, and do not repeat them here.
It is to be noted: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a recycling processing method for changing food waste, is characterized in that, comprises the steps:
Step (1), carries out integrated pre-treatment to pending changing food waste, and it comprises following sub-step further:
Sub-step (a) waterpower sub-elects non-biodegradable solid particulate in changing food waste, and removes;
Sub-step (b), heats the material after waterpower sorting, makes the grease in material melt, then carries out air supporting degreasing, obtain degreasing material;
Sub-step (c), carries out broken slurrying to the material after sorting and degreasing, and the grit impurity in material and pending pasty material is discharged from the bottom surface of container containing and side respectively;
Sub-step (d), is adjusted to 6.5 ~ 7.5 by the pH value of the pasty material after broken slurrying;
Step (2), carries out Anaerobic Digestion to described pasty material, and produces biogas;
Step (3), purifies the biogas produced after described anaerobic digestion, to obtain the methane of predetermined concentration value.
2. recycling processing method as claimed in claim 1; it is characterized in that; in step (2); natural pond slag is also produced after described pasty material anaerobic digestion; when described natural pond slag Lower heat value is higher than 1200kcal/kg; utilize tablets press to be made into shaping solid fuel, when described natural pond slag calorific value is lower than 1200kcal/kg, utilize aerobic composting process to be made into fertilizer.
3. recycling processing method as claimed in claim 1, it is characterized in that, the solid particulate that can not be biodegradable in described sub-step (1) comprises the isolated lightweight floating matter of waterpower and heavy deposits.
4. recycling processing method as claimed in claim 1, is characterized in that, in described step (2) after formation degreasing material, also comprises the lightweight floating matter and heavy deposits step of removing material surface.
5. recycling processing method as claimed in claim 4, is characterized in that, the lightweight floating matter on described removal material surface is for removing lightweight floating matter by scraping slag technique.
6. recycling processing method as claimed in claim 1, it is characterized in that, described step heats waterpower sorting material in (2), obtains degreasing material comprise further to remove grease:
Treating material is heated and leaves standstill, wherein solid grease is melted;
Air-float technology is utilized to be separated from pasty material by grease.
7. recycling processing method as claimed in claim 6, it is characterized in that, the described grease of separation is for processing soap.
8. the recycling treatment system of a changing food waste, comprise: anaerobic digestion module, for carrying out Anaerobic Digestion to the material received, it is characterized in that, this system also comprises: integrated pre-processing module, after carrying out integrated pre-treatment to changing food waste, supply anaerobic digestion module, described integrated pre-processing module comprises further:
Waterpower separation unit, add appropriate water according to the moisture situation of material, utilize the density difference of different components in changing food waste, waterpower isolates the solid particle material that can not be biodegradable, and remove, the described solid particulate that can not be biodegradable comprises lightweight floating matter and heavy deposits;
Degrease unit, for making the treating material after sorting under heating static condition, utilizing air-float technology to be separated from material by grease, obtaining degreasing material, and remove floating matter further;
Broken slurrying unit, for carrying out integrated broken slurrying to the pending changing food waste organic constituent material after waterpower sorting and degreasing, and grit impurity in material and pending pasty material are discharged from the different directions of container containing respectively, the pasty material supply anaerobic digestion module obtained.
9. recycling treatment system as claimed in claim 8, it is characterized in that, described integrated pre-processing module also comprises regulon, for the pH value of the pasty material after broken slurrying cell processing is adjusted to 6.5 ~ 7.5, and the pasty material after regulating is supplied anaerobic digestion module.
10. system as claimed in claim 9, it is characterized in that, described integrated pre-processing module also comprises:
Impurity elimination unit, for removing the floating matter on the pending pasty material surface in described broken slurrying unit.
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| CN112588788A (en) * | 2020-11-30 | 2021-04-02 | 国智自动化系统（张家港）有限公司 | Novel short-flow recycling treatment process for kitchen waste |
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| CN102784796A (en) * | 2011-05-19 | 2012-11-21 | 上海攀极投资有限公司 | Kitchen waste pretreatment system and sorting method therefor |
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