CN103100550A - Processing method of kitchen garbage - Google Patents
Processing method of kitchen garbage Download PDFInfo
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- CN103100550A CN103100550A CN2012105320399A CN201210532039A CN103100550A CN 103100550 A CN103100550 A CN 103100550A CN 2012105320399 A CN2012105320399 A CN 2012105320399A CN 201210532039 A CN201210532039 A CN 201210532039A CN 103100550 A CN103100550 A CN 103100550A
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Abstract
The invention discloses a processing method of kitchen garbage. The processing method comprises the following steps of: transferring the kitchen garbage to hydrolyze in a hydrolyzing tank, transferring the hydrolyzed clinker aggregate to a crush presser to crush and squeeze, transferring the squeezed slurry body to an anaerobic digestion reactor for anaerobic digestion so as to finish the treatment on the kitchen garbage. The processing method provided by the invention can efficiently realize stabilization, harmlessness and minimization of the kitchen garbage, the unstable organic substance is fully stabilized, methane and water and the like are formed so as not to generate secondary pollution, and the minimization of organic matter in the garbage is effectively realized through a biogas slurry and biogas residue processing system; and generated methane after anaerobic digestion is used as a high-quality clean energy, and fixed material after crushing and squeezing is treated reasonably according to specific circumstances.
Description
Technical field
The present invention relates to a kind of processing method of rubbish from cooking, belong to Solid Waste Treatment and resource field.
Background technology
Rubbish from cooking is the important component part of house refuse, is a kind of solid waste that the resident forms in the personal consumption process.It has that moisture content is high, the content of organic matter is high, grease and salt content is high and the characteristics such as easy corruption, has a strong impact on people's healthy and environmental sanitation.
Substantially for loading in mixture, the rubbish from cooking ratio is about 37～62% to China's domestic waste.In recent years, along with the raising of people's living standard, the generation of rubbish from cooking has the trend of growth, and ratio shared in domestic waste also rises to some extent.The rubbish from cooking output of China has just reached 4,500 ten thousand tons in 2000, will be near 9,000 ten thousand ton to 2007 annual productions, and annual growth rate reaches 10%.On the whole, China does not also have sound rubbish from cooking to process management system at present, lack corresponding management policy and suitable treatment technology, simultaneously difference to some extent makes effective processing of rubbish from cooking extremely difficult because composition, character and the generation of rubbish from cooking is subjected to the difference of social and economic condition, regional disparity, residents'living habit, dietary structure, seasonal variations.
The rubbish from cooking treatment technology mainly contains landfill, burning, anaerobic digestion, aerobic compost, pyrohydrolysis etc. at present, and the tupe of domestic composting is main mainly with landfill, burning now.But along with the raising of national economy level and the enhancing of people's environmental consciousness, the problems that the operation landfill that slightly spacious, applicability is strong and floor space are large, the large burning generation of difficulty is controlled in secondary pollution are more and more paid close attention to by the country and people, and the pattern that composting is directly processed in landfill and burning not too is fit to the present situation of national composting processing now.
Therefore domesticly many new processing methods have been emerged.Xining and Ningbo Pattern, Suzhou-model, Beijing model and Chongqing mode are more typically arranged.These techniques have certain advantage, but are difficult to realize the stabilisation of rubbish from cooking, innoxious, minimizing and recycling treatment.The leading fodder technology of Xining and Ningbo Pattern, still the generation of social concerns such as " swill pigs " has caused the suspection to this technology, such as the reliability that how to prove feed (with sick homology), how to prove the science of nutrition etc.; The leading wet solution recycling treatment of Suzhou-model, but its follow-up resource technology imperfection, the techniques such as synchronous supporting sewage disposal, foul smell processing are not caught up with; The leading compost treatment of Beijing model, but Some Enterprises puts undue emphasis on the performance of resource product, sky is said concept, how to solve the problem of pre-treatment sorting complexity, and problem that how to solve the secondary pollutions such as natural pond liquid, foul smell in composting process etc. does not have good solution yet; The leading anaerobism dry type of Chongqing mode is produced natural pond technique, but how to solve in the separation, dry type anaerobism of the organic material of pre-treatment the material fermentation not exclusively, produce the natural pond amount low, debug the easily problem such as stifled of easy acidifying, equipment, also need further exploration.Above-mentioned shortcoming is all to hinder at present rubbish from cooking to realize innoxious, minimizing and recycling treatment and problem demanding prompt solution.
Summary of the invention
The processing method that the purpose of this invention is to provide a kind of rubbish from cooking, this processing method are a kind ofly to turn to prerequisite with innoxious and decrement, realize simultaneously the novel combination treatment method of rubbish from cooking resource.
The processing method of a kind of rubbish from cooking provided by the present invention comprises the steps:
Rubbish from cooking is delivered in hydrolytic decomposition pot is hydrolyzed; Clinker conveyor after described hydrolysis is carried out fragmentation and squeezing to broken squeezer; Slurry after described squeezing is delivered to anaerobic digestion reaction vessel to carry out anaerobic digestion and namely realizes processing to rubbish from cooking.
In above-mentioned processing method, the temperature of described hydrolysis can be 120 ℃ ~ 220 ℃, as 150 ℃, the time can be 60min ~ 150min, as 90min ~ 150min, 90min, 120min or 150min, pressure can be 0.8MPa ~ 1.2MPa, as 1.0MPa, described hydrolysing step can be sterilized fully and realize innoxiously rubbish, and this hydrolysing step can effectively destroy the institutional framework of part material in rubbish from cooking simultaneously, organization internal moisture is overflowed, more be conducive to the subsequent treatment of rubbish from cooking; After described hydrolysis is completed, open described hydrolytic decomposition pot under certain pressure, can realize spraying quick-fried and material is expanded.
In above-mentioned processing method, the temperature of described anaerobic digestion can be 30 ℃ ~ 35 ℃ or 50 ℃ ~ 56 ℃, and volumetric loading can reach 8 ~ 15kg COD/m
3D is as 8 ~ 14kg COD/m
3D or 10 ~ 15kg COD/m
3D, the tank body of this anaerobic digestion adopts the extracorporal circulatory system heat exchange, and the tank external demand is installed insulation material.
In above-mentioned processing method, the effect of described squeezing step is that the rubbish after fragmentation is carried out Separation of Solid and Liquid, makes solid material moisture control below 65%, and the underflow moisture content is more than 82%.
The invention provides the technique of processing rubbish from cooking, also must according to the auxiliary equipment of the supporting necessity of actual conditions, realize the stabilisation of rubbish from cooking, innoxious and recycling treatment for effective processing of rubbish from cooking.As the artificial separation facility after broken bag, after the squeezing fragmentation, the burning of solid material or deep dehydration are processed, and after anaerobic digestion, the foul smell of the purification utilization of biogas and natural pond liquid, the processing of natural pond slag and whole set of installation is processed.
The present invention has the following advantages:
(1) processing speed fast (hydrolysis time is short), the rubbish that shipped the same day was disposed the same day, reached daily output day clear;
(2) effectively realize the stabilisation of rubbish from cooking, innoxious and minimizing, the thorough stabilisation of unsettled organic substance, form biogas, water etc., can not produce secondary pollution; Can further pass through supporting natural pond liquid, natural pond slag disposal system, can effectively realize minimizing organic in rubbish;
(3) biogas that produces after anaerobic digestion can be used as the high-quality clean energy resource and utilizes, and the solid material after broken squeezing also can reasonably be disposed as the case may be;
(4) pretreatment is simple, and strong adaptability is not high to the crude waste classificating requirement, is fit to the incomplete situation of present domestic refuse classification;
(5) floor space is less, and automaticity is high, saves human resources, without human body harm, and easy to implement, management and promoting.
Description of drawings
Fig. 1 is the flow chart of method for processing kitchen waste of the present invention.
The specific embodiment
The experimental technique that uses in following embodiment is conventional method if no special instructions.
In following embodiment, material used, reagent etc., if no special instructions, all can obtain from commercial channels.
The processing method of embodiment 1, rubbish from cooking
According to flow process shown in Figure 1, rubbish from cooking is processed.
The polybag that (1) at first will hold rubbish with bag-breaking machine tears, and discharges wrapped rubbish, then rubbish from cooking is delivered to hydrolytic decomposition pot;
(2) pass into saturated vapor in hydrolytic decomposition pot, the condition of controlled hydrolysis is: temperature is 150 ℃, pressure is 1.0MPa, 150min under these conditions is hydrolyzed, rubbish is sterilized fully and realizes innoxious, this pyrohydrolysis step can effectively be destroyed the institutional framework of part material in rubbish from cooking simultaneously, and organization internal moisture is overflowed, and more is conducive to the subsequent treatment of rubbish from cooking; Open the pyrohydrolysis tank after pyrohydrolysis is complete under certain pressure, realize that spray is quick-fried and material is expanded;
(3) clinker conveyor after pyrohydrolysis in broken squeezer, carries out fragmentation and squeezing; By the fragmentation of disintegrating machine and the squeezing effect of squeezer, can effectively bulk matter be smashed, and with the flexible material pulp, the effect of squeezing is that the rubbish after fragmentation is carried out Separation of Solid and Liquid, make solid material moisture control below 62%, the underflow moisture content is more than 84%;
(4) slurry after Separation of Solid and Liquid is inputed to carry out Anaerobic Digestion in anaerobic digestion reaction vessel, in employing, temperature (30 ~ 35 ℃) is carried out anaerobic digestion, and volumetric loading is 10 ~ 15kg COD/m
3D, tank body used adopts the extracorporal circulatory system heat exchange, and tank is installed insulation material outward, namely realizes the processing to rubbish from cooking.
It is 0.44 ~ 0.47m that the natural pond rate is produced in the anaerobic digestion of the present embodiment
3/ kgCOD, natural pond slag productive rate is 18 ~ 21%, natural pond liquid productive rate is 68 ~ 73%.
The processing method of embodiment 2, rubbish from cooking
According to flow process shown in Figure 1, rubbish from cooking is processed.
The polybag that (1) at first will hold rubbish with bag-breaking machine tears, and discharges wrapped rubbish, then rubbish from cooking is delivered to hydrolytic decomposition pot;
(2) pass into saturated vapor in hydrolytic decomposition pot, the condition of controlled hydrolysis is: temperature is 150 ℃, pressure is 1.0MPa, 120min under these conditions is hydrolyzed, rubbish is sterilized fully and realizes innoxious, this pyrohydrolysis step can effectively be destroyed the institutional framework of part material in rubbish from cooking simultaneously, and organization internal moisture is overflowed, and more is conducive to the subsequent treatment of rubbish from cooking; Open the pyrohydrolysis tank after pyrohydrolysis is complete under certain pressure, realize that spray is quick-fried and material is expanded;
(3) clinker conveyor after pyrohydrolysis in broken squeezer, carries out fragmentation and squeezing; By the fragmentation of disintegrating machine and the squeezing effect of squeezer, can effectively bulk matter be smashed, and with the flexible material pulp; The effect of squeezing is that the rubbish after fragmentation is carried out Separation of Solid and Liquid, makes solid material moisture control below 63%, and the underflow moisture content is more than 83%;
(4) slurry after Separation of Solid and Liquid is inputed to carry out Anaerobic Digestion in anaerobic digestion reaction vessel, in employing, temperature (30 ~ 35 ℃) is carried out anaerobic digestion, and volumetric loading is 8 ~ 14kg COD/m
3D, tank body used adopts the extracorporal circulatory system heat exchange, and tank is installed insulation material outward, namely realizes the processing to rubbish from cooking.
It is 0.43 ~ 0.46m that the natural pond rate is produced in the anaerobic digestion of the present embodiment
3/ kgCOD, natural pond slag productive rate is 18 ~ 22%, natural pond liquid productive rate is 68 ~ 73%.
The processing method of embodiment 3, rubbish from cooking
According to flow process shown in Figure 1, rubbish from cooking is processed.
The polybag that (1) at first will hold rubbish with bag-breaking machine tears, and discharges wrapped rubbish, then rubbish from cooking is delivered to hydrolytic decomposition pot;
(2) pass into saturated vapor in hydrolytic decomposition pot, the condition of controlled hydrolysis is: temperature is 150 ℃, pressure is 1.0MPa, 90min under these conditions is hydrolyzed, rubbish is sterilized fully and realizes innoxious, this pyrohydrolysis step can effectively be destroyed the institutional framework of part material in rubbish from cooking simultaneously, and organization internal moisture is overflowed, and more is conducive to the subsequent treatment of rubbish from cooking; Open the pyrohydrolysis tank after pyrohydrolysis is complete under certain pressure, realize that spray is quick-fried and material is expanded;
(3) clinker conveyor after pyrohydrolysis in broken squeezer, carries out fragmentation and squeezing; By the fragmentation of disintegrating machine and the squeezing effect of squeezer, can effectively bulk matter be smashed, and with the flexible material pulp; The effect of squeezing is that the rubbish after fragmentation is carried out Separation of Solid and Liquid, makes solid material moisture control below 65%, and the underflow moisture content is more than 82%;
(4) slurry after Separation of Solid and Liquid is inputed to carry out Anaerobic Digestion in anaerobic digestion reaction vessel, adopt high temperature (50 ~ 56 ℃) to carry out anaerobic digestion, volumetric loading is 10 ~ 15kg COD/m
3D, tank body used adopts the extracorporal circulatory system heat exchange, and tank is installed insulation material outward, namely realizes the processing to rubbish from cooking.
It is 0.44 ~ 0.47m that the natural pond rate is produced in the anaerobic digestion of the present embodiment
3/ kgCOD, natural pond slag productive rate is 18 ~ 24%, natural pond liquid productive rate is 68 ~ 73%.
Claims (3)
1. the processing method of a rubbish from cooking, comprise the steps:
Rubbish from cooking is delivered in hydrolytic decomposition pot is hydrolyzed; Clinker conveyor after described hydrolysis is carried out fragmentation and squeezing to broken squeezer; Slurry after described squeezing is delivered to anaerobic digestion reaction vessel to carry out anaerobic digestion and namely realizes processing to rubbish from cooking.
2. processing method according to claim 1, it is characterized in that: the temperature of described hydrolysis is 120 ℃ ~ 220 ℃, and the time is 60min ~ 150min, and pressure is 0.8MPa ~ 1.2MPa.
3. processing method according to claim 1 and 2, it is characterized in that: the temperature of described anaerobic digestion is 30 ℃ ~ 35 ℃ or 50 ℃ ~ 56 ℃, and the volume lotus is 8 ~ 15kg COD/m
3D.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104624604A (en) * | 2014-12-11 | 2015-05-20 | 高亚平 | System flow for multivariate recycling of organic wastes |
| CN104858215A (en) * | 2015-05-27 | 2015-08-26 | 北京洁绿科技发展有限公司 | Innocent treatment method of dead livestock |
| CN109821864A (en) * | 2019-04-04 | 2019-05-31 | 四川深蓝环保科技有限公司 | A kind of pretreatment system and method for kitchen garbage |
| CN110479733A (en) * | 2019-07-25 | 2019-11-22 | 广东路通投资管理集团有限公司 | A kind of rubbish from cooking high temperature microbe processing method |
| CN111056882A (en) * | 2020-01-17 | 2020-04-24 | 刘文治 | Complete device for preparing water-soluble liquid fertilizer by household classification kitchen garbage |
| CN113215202A (en) * | 2021-06-10 | 2021-08-06 | 深高蓝德环保科技集团股份有限公司 | Kitchen waste and straw powder combined anaerobic fermentation method and device |
| CN115301704A (en) * | 2022-08-04 | 2022-11-08 | 普拉克环保系统（北京）有限公司 | High organic matter recovery processing system of kitchen garbage |
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| CN104858215A (en) * | 2015-05-27 | 2015-08-26 | 北京洁绿科技发展有限公司 | Innocent treatment method of dead livestock |
| CN109821864A (en) * | 2019-04-04 | 2019-05-31 | 四川深蓝环保科技有限公司 | A kind of pretreatment system and method for kitchen garbage |
| CN110479733A (en) * | 2019-07-25 | 2019-11-22 | 广东路通投资管理集团有限公司 | A kind of rubbish from cooking high temperature microbe processing method |
| CN111056882A (en) * | 2020-01-17 | 2020-04-24 | 刘文治 | Complete device for preparing water-soluble liquid fertilizer by household classification kitchen garbage |
| CN113215202A (en) * | 2021-06-10 | 2021-08-06 | 深高蓝德环保科技集团股份有限公司 | Kitchen waste and straw powder combined anaerobic fermentation method and device |
| CN115301704A (en) * | 2022-08-04 | 2022-11-08 | 普拉克环保系统（北京）有限公司 | High organic matter recovery processing system of kitchen garbage |
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| CN103100550B (en) | 2016-04-13 |
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Address after: 100084 Beijing city Haidian District Nongda Road No. 1 Building No. 2 hospital B block 618 Patentee after: Beijing clean green environment Polytron Technologies Inc Address before: Silicon Valley 100084 Beijing city Haidian District Nongda road bright city 2B, room 618 Patentee before: Beijing Jeegreen Technology Co., Ltd. |
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