CN104959367A - Kitchen waste treatment process - Google Patents
Kitchen waste treatment process Download PDFInfo
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- CN104959367A CN104959367A CN201510408425.0A CN201510408425A CN104959367A CN 104959367 A CN104959367 A CN 104959367A CN 201510408425 A CN201510408425 A CN 201510408425A CN 104959367 A CN104959367 A CN 104959367A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Abstract
The invention relates to a kitchen waste treatment process. The kitchen waste treatment process comprises the following steps: (1) carrying out pretreatment for dividing the kitchen waste into a solid-phase material, an oil-phase material and a water-phase material through a pretreatment system; (2) carrying out primary filtering treatment for introducing the water-phase material into a first filtering system, wherein the first filtering system comprises a first filtering film component, the water-phase material is filtered by a cross flow filtration manner through the first filtering film component, the obtained filtrate is primary treatment water, and the trapped molecular weight of the first filtering film is 250000; and (3) carrying out secondary filtering treatment for introducing the primary treatment water into a second filtering system, wherein the second filtering system comprises a second filtering film component, the primary treatment water is filtered by a roll type filtering manner through the second filtering film component, the obtained filtrate is dischargeable water, and the trapped molecular weight of the second filtering film is 100. The treatment process is capable of effectively removing pollutants in the kitchen waste; the obtained water is clear and transparent and meets the discharge standard; in addition, the water production rate of the treatment process reaches over 85 percent.
Description
Technical field
The present invention relates to one way of life garbage treating process, particularly relate to a kind of changing food waste treatment process.
Background technology
Changing food waste is also known as hogwash, kitchen leftover bits and pieces rubbish, refer to the canteens such as restaurant, hotel, all kinds of restaurant and government bodies, enterprises and institutions, school, the changing food waste that residential households, the market of farm produce, food processing enterprises produce and castoff are the organic waste parts in domestic waste.Kitchen waste is stacked and will be gone bad, and is not only the contaminated environment such as putrefactive odor, waste water, waste oil, especially the breeding place of the insect such as fly, mosquito, cockroach, mouse, and changing food waste has become headachy city public hazards.
After changing food waste humic is rotten, a large amount of harmful substances can be produced, comprise the various bacteriums to human body and animal pest.Therefore, changing food waste can not directly be used for feeding pigs or as the feed of other animals.Regulation in " in national livestock and poultry cultivation management method ": " prohibitting the use the animal product discarded object produced in changing food waste or food processing process to return livestock and poultry of feeding "; Changing food waste process management method in Shanghai City specifies: forbid rubbish from cooking as animal and fowl fodder.
The feature of changing food waste is: water content is high, content of organics is high, and fat contents etc. are far above other organic wastes, higher fatty acid, the high organic characteristic of changing food waste, it is made to have higher recycling to be worth, wherein organic matter main component is starch based, food fiber class, animal tallow class and protein, and these are all the affluent resources making organic fertilizer or feed.Therefore, changing food waste is scientifically processed, make high-grade organic fertilizer or high protein feed, not only solve environmental pollution, cut off the biological chain that harmful substance shifts to human body, meanwhile, output object can be used as again the valuable means of production of agriculture, farm, while solution environmental pollution, develop recycling economy.
The main method processing changing food waste in prior art is: one, pulverizing is direct is afterwards removed by row of conduits.But this method is only only applicable to the less situation of changing food waste amount, and there is drawback, as easily caused drainage pipeline to block, increasing the weight of municipal sewage and getting rid of burden, and causing secondary pollution.Two, direct landfill.Although the process simple to operate of this method is convenient, does not meet energy-conserving and environment-protective, the idea of development recycled, easily cause the waste of available resources.Three, energy process.This method mainly comprises burning method, thermal decomposition method, ferment for hydrogen production etc.This processing method can realize the recycling of the energy, but cost of investment is large, vent gas treatment difficulty.
Summary of the invention
Technical problem to be solved by this invention provides for the state of the art changing food waste treatment process that a kind for the treatment of effect is stablized, automaticity is high.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of changing food waste treatment process, comprises the steps:
(1) pre-treatment, is divided into solid-phase material, oil phase material and aqueous phase material by preprocessing system by changing food waste;
(2) first filtration treatment, described aqueous phase material enters the first filtration system, described first filtration system comprises the first filtering film component, described aqueous phase material carries out cross-flow filtration by the first filtering film component, gained filtrate is for just to process water, and the molecular cut off of the first filter membrane of described first filtering film component is 250000;
(3) second filtration treatment, described just process water enters the second filtration system, described second filtration system comprises the second filtering film component, described just process water carries out wound fil-tration by the second filtering film component, the discharge water that gained filtrate being can be discharged, the molecular cut off of the second filter membrane of described second filtering film component is 100.
Wherein, described first filtration system also comprises the first membrane pump, and described aqueous phase material carries out cross-flow filtration by the first filtering film component under the effect of the first membrane pump, and gained filtrate is describedly just process water;
Preferably, described first filtration system also comprises the first circulating slot and filter, the described input of the first circulating slot is connected with the output of preprocessing system, the described output of the first circulating slot is connected with the input of filter, the output of described filter is connected with the input of the first filtering film component, and the output of described first filtering film component is connected with the input of the second filtration system;
Preferably, the pump pressure of described first membrane pump is 0.5 ~ 0.6MPa.
Wherein, the output of described first filtering film component is also connected with the first circulating slot, and part described just process water is for rinsing the first filtration system;
Preferably, the described just process water of 35% is for rinsing the first filtration system;
Preferably, described just process water rinsed first filtration system 30 ~ 60s at interval of 30 minutes.
Wherein, described second filtration system also comprises the second membrane pump, and described just process water carries out wound fil-tration by the second filtering film component under the effect of the second membrane pump, and gained filtrate is described discharge water;
Preferably, described second filtration system also comprises the second circulating slot, and the input of described second circulating slot is connected with the output of the first filtering film component, and the output of described second circulating slot is connected with the input of the second filtering film component;
Preferably, the pump pressure of described second membrane pump is 1.0 ~ 3.0MPa.
Wherein, the described output of the second filtering film component is connected with the input of preprocessing system, and described discharge water is for rinsing preprocessing system, the first filtration system and the second filtration system.
Wherein, the membrane flux of described first filter membrane is 60 ~ 250L/m
2 .h
.atm;
Preferably, described first filter membrane is milipore filter;
Preferably, the aperture of described milipore filter is 0.005 ~ 0.1 μm, such as 0.008 μm, 0.01 μm, 0.04 μm, 0.05 μm, 0.06 μm, 0.08 μm, 0.09 μm; The restriction in this aperture, can ensure water, such as potassium ion, the monovalention of sodium ion, such as magnesium ion, calcium ion multivalent ion pass through, and stop the suspension of virus, bacterium and such as colloid, silt;
Preferably, the COD of described just process water is 800 ~ 1200mg/L;
Preferably, described second filter membrane is NF membrane;
Preferably, the aperture of described NF membrane is 0.001 ~ 0.05 μm, such as 0.005 μm, 0.01 μm, 0.02 μm, 0.03 μm, 0.04 μm; The restriction in this aperture, can ensure water, such as potassium ion, the monovalention of sodium ion passes through, and stops the suspension of the multivalent ion of such as magnesium ion, calcium ion by, virus, bacterium and such as colloid, silt.
Wherein, described preprocessing system comprise connect successively roll breaker, breakdown of emulsion grid device and oily-water seperating equipment, described oily-water seperating equipment is connected with the first filtration system, and step (1) comprises the steps:
(1a) roll break process, described in roll that breaker rolls changing food waste, break process, the refuse leachate of obtained solid-phase material and liquid phase;
(1b) breakdown of emulsion, grid process, described refuse leachate is through breakdown of emulsion grid device, and described breakdown of emulsion grid device carries out breakdown of emulsion, grid process to refuse leachate, obtained waste liquid;
(1c) water-oil separating process, described waste liquid is through oily-water seperating equipment, and waste liquid is separated into oil phase material and aqueous phase material by described oily-water seperating equipment, and described aqueous phase material enters the first filtration system.
Wherein, also comprise step (1d) after step (1c), oil phase recycles, and described oil phase material is recycled by retracting device.
Wherein, after step (1), also comprise aerobic fermentation step, in described solid-phase material, add the fermentation composition containing EM bacterium, in 60 ~ 100 DEG C, such as, at 70 DEG C, 80 DEG C, 90 DEG C, 95 DEG C aerobic fermentation 8 ~ 10h, obtained organic fertilizer and zymotic fluid;
Preferably, described fermentation composition comprises following component:
EM bacterium accounts for 5 ~ 10% of solid-phase material weight, and such as 6%, 7%, 8%, 9%;
Wood chaff accounts for 30 ~ 50% of solid-phase material weight, such as 35%, 40%, 45%;
Bacillus licheniformis accounts for 80 ~ 110% of solid-phase material weight, and such as 85%, 90%, 95%, 100%, 105%;
Preferably, described fermentation composition also comprises cellulase, and described cellulase accounts for 0.5 ~ 2.5% of solid-phase material weight, and such as 1.0%, 1.5%, 2.0%; Cellulase can promote cellulose decomposition, improves the utilization rate of wooden chaff.
Preferably, described fermentation composition also comprises Lactobacillus casei, and described Lactobacillus casei accounts for 1 ~ 5% of solid-phase material weight, and such as 2%, 3%, 4%.Add Lactobacillus casei and can help lend some impetus to aerobic fermentation, improve the utilization rate of raw material, and then improve the productive rate of organic fertilizer, improve the nutritional labeling of organic fertilizer simultaneously, reduce costs.
In above-mentioned fermentation composition, bacillus licheniformis has stronger protease, lipase, diastatic activity, promotes the degraded of feed Middle nutrition element; In addition, bacillus licheniformis can produce resistant activity material, and the biology with uniqueness takes oxygen mechanism of action by force, can suppress the growth and breeding of pathogenic bacteria; In addition, bacillus licheniformis can adjust flora imbalance; And bacillus licheniformis, can remove the stink of solid refuse fast.Therefore, add bacillus licheniformis in solid refuse after, the rapid decomposable organic matter of bacillus licheniformis, makes solid refuse become thoroughly decomposed completely, thus can strengthen effect of EM bacterium, and then reach synergy with EM bacterium.
Wood chaff refer to carry out timber add man-hour because cutting and from trees the foam shape wood chip of fallen trees itself.In technique scheme, the proportion of wood chaff is little, water absorption is large, can be used as raising agent, making fermentation materials---solid refuse is in splendid loose ventilative state, the heat impelling fermentation to produce can be distributed timely, and then makes fermentation materials temperature remain at specific fermentation temperature scope.
" EM " is a kind of " useful micropopulation ", 1985, by agronomy portion of university of state-run Ryukyu of Japan than good teach to have selected from 1000 various bacteria according to husband belong to more than the 80 kind of microbial bacteria useful and harmless to plant, animal and human's body based on 5 sections 10 altogether of lactic acid bacteria, saccharomycete, fungi, actinomyces, photosynthetic bacteria, they have been combined into one group can the useful organisms group of symbiosis.He is referred to as the bacterium of this symbiosis " useful micropopulation ".Its English name is " Effective Microorganisms ", and Chinese is referred to as " EM ", and " EM " is product common name in the world.
The main component of EM bacterium and content: the five large flora 80 multiple beneficial microorganisms such as the der Pilz of lactic acid bacteria, saccharomycete, photosynthetic bacteria, Gram positive actinomycetes, fermentation system; Be rich in organic acid, amino acid, nucleic acid, digestive ferment Small molecular biological peptide, unknown somatomedin isoreactivity composition.Viable bacteria content: >=10 hundred million/ml.
Wherein, described zymotic fluid, respectively after the first filtration system, the second filtration system process, obtains discharge water.
Compared with prior art, the invention has the advantages that: changing food waste is first separated into solid-phase material, oil phase material and aqueous phase material by this changing food waste treatment process, then successively cross-flow filtration and wound fil-tration are carried out to aqueous phase material, the first filtration system wherein for cross-flow filtration can effectively stop oarse-grained solid suspension, from the first filtration system first process water comparatively clear out, substantially without macroscopic solid suspension, COD is between 800 ~ 1200mg/L.In addition, the second filtration system energy degree of depth for wound fil-tration removes dissolubility small organic molecule, and effectively reduce COD, gained discharge water water quality reaches integrated wastewater discharge standard GB8978-1996.
In a word, present treatment technique have employed the three grade coupled treatment process (being respectively pre-treatment, the first filtration treatment and the second filtration treatment) that film combination piece-rate system is main body, present treatment PROCESS FOR TREATMENT effect stability, pollutant removal are thorough, easy to operate, automaticity is high, flexible operation etc.; In addition, present treatment technique effectively can remove the pollutant in changing food waste, the water quality clear of acquisition, and meets discharge standard; In addition, the producing water ratio of present treatment technique is more than 85%.
Accompanying drawing explanation
Fig. 1 is the flow chart of embodiment of the present invention changing food waste treatment process.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
The present embodiment comprises for the treatment of the treatment system of changing food waste the preprocessing system, the first filtration system and the second filtration system that connect successively.
Wherein, preprocessing system comprise connect successively roll breaker, breakdown of emulsion grid device and oily-water seperating equipment, oily-water seperating equipment is connected with the first filtration system.
First filtration system comprises the first circulating slot, the filter that connect successively and can carry out the first filtering film component of cross-flow filtration, the input of the first circulating slot is connected with the output of preprocessing system, and the output of the first filtering film component is connected with the input of the second filtration system; First filtration system also comprises the first membrane pump, and material is pumped into the first filtering film component by the first membrane pump, and the pump pressure of the first membrane pump is 0.5 ~ 0.6MPa.
Second filtration system comprises the second circulating slot and the second filtering film component, and the input of the second circulating slot is connected with the output of the first filtering film component, and the output of the second circulating slot is connected with the input of the second filtering film component; Second filtration system also comprises the second membrane pump, and material pumps in the second filtering film component by the second membrane pump, and the pump pressure of the second membrane pump is 1.0 ~ 3.0MPa.
When carrying out changing food waste process by above-mentioned treatment system, as shown in Figure 1, concrete technique comprises the steps:
(1) pre-treatment, by preprocessing system, changing food waste is divided into solid-phase material, oil phase material and aqueous phase material, this step specifically comprises the steps:
(1a) roll break process, the changing food waste of collection enters and rolls breaker, rolls that breaker rolls changing food waste, break process, the refuse leachate of obtained solid-phase material and liquid phase;
(1b) breakdown of emulsion, grid process, refuse leachate is through breakdown of emulsion grid device, and breakdown of emulsion grid device carries out breakdown of emulsion, grid process to refuse leachate, obtained waste liquid; In this step, breakdown of emulsion grid device comprises breakdown of emulsion mechanism and grid mechanism, this Liang Zhong mechanism can adopt existing structure, wherein, grid mechanism can remove bulky grain suspension in refuse leachate and foreign material further, these suspensions and foreign material may follow-up the first filter membrane of scratch and the second filter membranes, adopted artificial or mechanical rake to get, and mix with the solid-phase material in step (1a) by the dregs that grid mechanism stops; Breakdown of emulsion grid device can also impel bulky grain oiling oil droplet coalescence in refuse leachate to emerge, and is beneficial to follow-up oil recovery;
(1c) water-oil separating process, waste liquid enters oily-water seperating equipment, and waste liquid is separated into oil phase material and aqueous phase material by oily-water seperating equipment, and aqueous phase material enters the first filtration system;
(1d) oil phase recycling, oil phase material is recycled by retracting device, the grease reclaimed imports in oily recycling bin, previous experiences data, the oil content of changing food waste penetrating fluid is basically stable at 2.2% ~ 3.1%, house refuse average out to 0.8% ~ 1.0%, the recyclable 20kg grease of meal kitchen per ton oily waste water estimated average.
(2) first filtration treatment, aqueous phase material enters the first filtration system, aqueous phase material is first stored in the first circulating slot, aqueous phase material in first circulating slot is first filtered, pump in the first filtering film component via the first membrane pump again and carry out cross-flow filtration, gained filtrate is for just to process water, and the molecular cut off of the first filter membrane is 250000; First filter membrane is milipore filter, and its membrane flux is 60 ~ 250L/m
2 .h
.atm, object is oil content in block water phase materials and Large stone material, and the first process clarification of water of acquisition is transparent, and substantially without macroscopic solid suspension, COD is between 800 ~ 1200mg/L.In order to obtain the better filter effect of effect, the aperture of milipore filter is 0.005 ~ 0.1 μm; The restriction in this aperture, can ensure water, such as potassium ion, the monovalention of sodium ion, such as magnesium ion, calcium ion multivalent ion pass through, and stop the suspension of virus, bacterium and such as colloid, silt.The pollution index SDI of the first process water that this step obtains is about 5 ~ 10.
(3) second filtration treatment, just process water enters the second filtration system, and just process water is first stored in the second circulating slot, wait collect a certain amount of after restart the second filtering film component and focus on, thus decrease the running time of equipment.The first process water be stored in the second circulating slot pumps in the second filtering film component and carries out wound fil-tration by the second membrane pump, and the filtrate through the second filtering film component infiltration water outlet gained is the discharge water that can discharge, and the molecular cut off of the second filter membrane is 100; Second filter membrane is NF membrane, and object is that the degree of depth removes dissolubility small organic molecule, and reduce COD further, in order to obtain the better filter effect of effect, the aperture of NF membrane is 0.001 ~ 0.05 μm; The restriction in this aperture, can ensure water, such as potassium ion, the monovalention of sodium ion passes through, and stops the suspension of the multivalent ion of such as magnesium ion, calcium ion by, virus, bacterium and such as colloid, silt.
After tested, the discharge water obtained through above-mentioned treatment process reaches the integrated wastewater discharge standard GB8978-1996 shown in table 1, and its concrete pollutants removal rate is as shown in table 2.
Table 1. integrated wastewater discharge standard GB8978-1996
Table 2. present treatment technique is to the pollutants removal rate of the aqueous phase material of changing food waste
| Test item | PH | SS | COD | BOD5 | Vegetable and animals oils |
| Clearance (%) | Reach standard | 96 | 98.75 | 98.5 | 97.5 |
Because the first process clarification of water obtained through the first filtration system process is transparent, substantially solid suspension is not had, therefore can be used for other parts of rinsing treatment system, and then guarantee rolls the Effec-tive Function of breaker, prevents the first filter membrane, the second filter membrane is blocked by solid suspension.In order to realize this effect, the output of the first filtering film component is also connected with the first circulating slot, and just process water is for rinsing the first filtration system; The consumption of wash water is about 35% of just process water weight, remaining 65% and is filtered, and then carries out subsequent treatment.First process water rinsed first filtration system 30 ~ 60s at interval of 30 minutes, and concrete washing time is depending on the water quality condition of former water, and treatment system can employ first process water flushing preprocessing system and first filtration system of 35% certainly.
In addition, the discharge water that second filtration system process obtains can directly discharge, also may be used for rinsing whole treatment system, specifically: the output of the second filtering film component is connected with the input of preprocessing system, discharge water is for rinsing preprocessing system, the first filtration system and the second filtration system.
The solid-phase material that above-mentioned treatment process is made as garbage disposal, also can make organic fertilizer by aerobic fermentation step.Concrete aerobic fermentation step is: in solid-phase material, add wooden chaff, EM bacterium, bacillus licheniformis, cellulase and Lactobacillus casei, aerobic fermentation 8 ~ 10h at 60 ~ 100 DEG C, obtained organic fertilizer and zymotic fluid, wherein, the weight of wood chaff accounts for 30 ~ 50% of solid-phase material weight, EM bacterium accounts for 5 ~ 10% of solid-phase material weight, bacillus licheniformis accounts for 80 ~ 110% of solid-phase material weight, cellulase accounts for 0.5 ~ 2.5% of solid-phase material weight, and Lactobacillus casei accounts for 1 ~ 5% of solid-phase material weight.The concrete consumption of wood chaff, EM bacterium, bacillus licheniformis, cellulase and Lactobacillus casei is adjustable in above-mentioned scope, accordingly, fermentation time makes the appropriate adjustments along with the consumption of fermentation temperature, wooden chaff, EM bacterium, bacillus licheniformis, cellulase and Lactobacillus casei.
Zymotic fluid prepared by above-mentioned aerobic fermentation step can utilize the first above-mentioned filtration system and the second filtration system to make discharge water, and detailed process, as the above-mentioned process to aqueous phase material, namely carries out step (2) and step (3) successively.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (10)
1. a changing food waste treatment process, is characterized in that, comprises the steps:
(1) pre-treatment, is divided into solid-phase material, oil phase material and aqueous phase material by preprocessing system by changing food waste;
(2) first filtration treatment, described aqueous phase material enters the first filtration system, described first filtration system comprises the first filtering film component, described aqueous phase material carries out cross-flow filtration by the first filtering film component, gained filtrate is for just to process water, and the molecular cut off of the first filter membrane of described first filtering film component is 250000;
(3) second filtration treatment, described just process water enters the second filtration system, described second filtration system comprises the second filtering film component, described just process water carries out wound fil-tration by the second filtering film component, the discharge water that gained filtrate being can be discharged, the molecular cut off of the second filter membrane of described second filtering film component is 100.
2. changing food waste treatment process according to claim 1, it is characterized in that: described first filtration system also comprises the first membrane pump, described aqueous phase material carries out cross-flow filtration by the first filtering film component under the effect of the first membrane pump, and gained filtrate is describedly just process water;
Preferably, described first filtration system also comprises the first circulating slot and filter, the described input of the first circulating slot is connected with the output of preprocessing system, the described output of the first circulating slot is connected with the input of filter, the output of described filter is connected with the input of the first filtering film component, and the output of described first filtering film component is connected with the input of the second filtration system;
Preferably, the pump pressure of described first membrane pump is 0.5 ~ 0.6MPa.
3. changing food waste treatment process according to claim 2, is characterized in that: the output of described first filtering film component is also connected with the first circulating slot, and part described just process water is for rinsing the first filtration system;
Preferably, the described just process water of 35% is for rinsing the first filtration system;
Preferably, described just process water rinsed first filtration system 30 ~ 60s at interval of 30 minutes.
4. changing food waste treatment process according to claim 1, it is characterized in that: described second filtration system also comprises the second membrane pump, described just process water carries out wound fil-tration by the second filtering film component under the effect of the second membrane pump, and gained filtrate is described discharge water;
Preferably, described second filtration system also comprises the second circulating slot, and the input of described second circulating slot is connected with the output of the first filtering film component, and the output of described second circulating slot is connected with the input of the second filtering film component;
Preferably, the pump pressure of described second membrane pump is 1.0 ~ 3.0MPa.
5. changing food waste treatment process according to claim 1, is characterized in that: the described output of the second filtering film component is connected with the input of preprocessing system, and described discharge water is for rinsing preprocessing system, the first filtration system and the second filtration system.
6. changing food waste treatment process according to claim 1, is characterized in that: the membrane flux of described first filter membrane is 60 ~ 250L/m
2 .h
.atm;
Preferably, described first filter membrane is milipore filter;
Preferably, the aperture of described milipore filter is 0.005 ~ 0.1 μm;
Preferably, the COD of described just process water is 800 ~ 1200mg/L;
Preferably, described second filter membrane is NF membrane;
Preferably, the aperture of described NF membrane is 0.001 ~ 0.05 μm.
7. changing food waste treatment process according to claim 1, it is characterized in that, described preprocessing system comprise connect successively roll breaker, breakdown of emulsion grid device and oily-water seperating equipment, described oily-water seperating equipment is connected with the first filtration system, and step (1) comprises the steps:
(1a) roll break process, described in roll that breaker rolls changing food waste, break process, the refuse leachate of obtained solid-phase material and liquid phase;
(1b) breakdown of emulsion, grid process, described refuse leachate is through breakdown of emulsion grid device, and described breakdown of emulsion grid device carries out breakdown of emulsion, grid process to refuse leachate, obtained waste liquid;
(1c) water-oil separating process, described waste liquid is through oily-water seperating equipment, and waste liquid is separated into oil phase material and aqueous phase material by described oily-water seperating equipment, and described aqueous phase material enters the first filtration system.
8. changing food waste treatment process according to claim 7, is characterized in that: after step (1c), also comprise step (1d), and oil phase recycles, and described oil phase material is recycled by retracting device.
9. the changing food waste treatment process according to any one of claim 1 to 8, it is characterized in that: after step (1), also comprise aerobic fermentation step, the fermentation composition containing EM bacterium is added in described solid-phase material, aerobic fermentation 8 ~ 10h at 60 ~ 100 DEG C, obtained organic fertilizer and zymotic fluid;
Preferably, described fermentation composition comprises following component:
EM bacterium accounts for 5 ~ 10% of solid-phase material weight;
Wood chaff accounts for 30 ~ 50% of solid-phase material weight;
Bacillus licheniformis accounts for 80 ~ 110% of solid-phase material weight;
Preferably, described fermentation composition also comprises cellulase, and described cellulase accounts for 0.5 ~ 2.5% of solid-phase material weight;
Preferably, described fermentation composition also comprises Lactobacillus casei, and described Lactobacillus casei accounts for 1 ~ 5% of solid-phase material weight.
10. changing food waste treatment process according to claim 9, is characterized in that: described zymotic fluid, respectively after the first filtration system, the second filtration system process, obtains discharge water.
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| CN108164363A (en) * | 2018-01-16 | 2018-06-15 | 北京东方好地科技有限公司 | The preparation of biological humic fermentation fertilizer and application process |
| CN111410327A (en) * | 2020-03-29 | 2020-07-14 | 南京霄祥工程技术有限公司 | Restaurant wastewater treatment process and system |
| WO2020220409A1 (en) * | 2019-04-30 | 2020-11-05 | 贵州民族大学 | Integrated treatment system for domestic garbage |
| WO2020220410A1 (en) * | 2019-04-30 | 2020-11-05 | 贵州民族大学 | Integrated treatment apparatus for domestic waste |
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