CN103639176A - Method for sorting waste paper pulp, plastic and dust impurities from urban garbage - Google Patents
Method for sorting waste paper pulp, plastic and dust impurities from urban garbage Download PDFInfo
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- CN103639176A CN103639176A CN201310693989.4A CN201310693989A CN103639176A CN 103639176 A CN103639176 A CN 103639176A CN 201310693989 A CN201310693989 A CN 201310693989A CN 103639176 A CN103639176 A CN 103639176A
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Abstract
The invention discloses a method for sorting waste paper pulp, plastic and dust impurities from urban garbage. The method comprises the following steps: firstly, carrying out sterilization and deodorization on the garbage, then putting the processed mixed garbage into clean water, adequately stirring the mixed garbage by utilizing a hinge type stirrer, and standing for a plurality of minutes so as to separate light plastic (such as films and foams) from the mixed garbage; secondly, adding a hydrogen dioxide solution into a precipitated mixture of the paper pulp, dust and other heavy plastic (such as rigid plastic fragments), and continuously stirring by utilizing the stirrer, so as to separate the paper pulp from the mixture; finally, separating the dust from the mixture of the heavy plastic and dust particles by utilizing a slag separator, so as to obtain the heavy plastic. According to the method, the high-purity paper pulp and plastic products can be further respectively obtained when dust impurities are removed and can be further machined into secondary fibers and regenerated plastic particles; the repeated recycling of garbage resources is realized, and the comprehensive utilization ratio of urban garbage raw materials is substantially increased.
Description
Technical field
The present invention relates to the technique of from municipal refuse, waste paper pulp, three kinds of components of plastics and dirt impurity being carried out to separated sorting, be specifically related to the method for separating of waste paper pulp in a kind of municipal refuse, plastics and dirt impurity.
Background technology
In densely populated big city, garbage disposal is a thorny problem always.Common way is to be sent to landfill after collecting, or incinerates with incinerator.But the problem of meeting manufacturing environment protection, can further alleviate landfill degree of saturation and stop overconsumption.Garbage disposal in landfill is improper can polluted underground water and stink, and a lot of city can be fewer and feweri for the area of landfill.Incinerate unavoidable meeting and produce toxic gas, harm organism.
At present, the whole world produces 4.9 hundred million tons of rubbish every year, and only China just produces nearly 1.5 hundred million tons of municipal refuses every year.And whole world rubbish average annual growth is 8.42%, Chinese rubbish growth rate reaches more than 10% especially, and the latter has become rubbish in the world and surrounded one of the most serious country in city.According to statistics, National urban house refuse accumulation volume of cargo in storage has reached 7,000,000,000 tons, takes up an area approximately more than 80 ten thousand mu, in recent years again with 4.8% speed sustainable growth every year on average.The big and medium-sized cities in the whole nation existing 2/3rds are absorbed among the encirclement of rubbish, and have 1/4th city there is no good place heap garbage.
Along with economic develop rapidly, people are consumption of natural resource in large quantities, large-scale production, and consumption, is producing again discarded object in large quantities in large quantities.Society is for the suitable attention of the sustainable development of resource and recycling, and refuse classification becomes a wherein requisite part already.How increase year after year in the face of expanding economy and domestic waste total amount, make these rubbish turn waste into wealth, thereby realize the resource of rubbish, and Waste sorting recycle is best outlet.The refuse classification of many developed countries has been carried out decades, and successful.Since Chinese Government in 2002, advocate separate waste collection, because a variety of causes effect is undesirable.Day by day serious along with China's one line and tier 2 cities " garbage-surrounded city " phenomenon, domestic rubbish disposal certainly will will adhere to that the principle of " innoxious, minimizing, resource " actively pushes forward separate waste collection, encourages waste recovery and comprehensive utilization.Waste or used plastics and waste paper are comparatively general in domestic waste, and proportion is larger, and these two kinds of conventional garbage raw materials are carried out to efficient separated sorting important realistic meaning.
Summary of the invention
In order to solve plastics and the large problem of wastepaper as raw material sorting difficulty in current urban garbage disposal, the object of the present invention is to provide the method for separating of waste paper pulp in a kind of municipal refuse, plastics and dirt impurity, separation purity is good, easy to operation, be applicable to the technique of plastics and the large class sorting of waste paper in domestic waste, in technical process, do not produce secondary pollution, realized recycling municipal solid waste and recycled.
The technical scheme that the present invention takes is:
In municipal refuse, a method for separating for waste paper pulp, plastics and dirt impurity, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: the rubbish for the treatment of sorting is immersed in peracetic acid soln, and 12-24 h is processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal is filtered, and with clear water, cleans solid content;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 2-5 cm size, then in warm water, heating is stirred to paper pulp and disperses in water, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, light plastic is due to the less suspension of autologous density or float in water, and paper pulp fiber and dust is because density is sunk more greatly in water, thereby realize the sorting of light plastic.
(3) sorting of waste paper pulp: the hydrogenperoxide steam generator that adds higher concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment), abundant stirred for several minute, because running into waste paper pulp, hydrogenperoxide steam generator can produce micro-bubble, can be by fiber fines flotation to solution upper strata, thus realize the separated of paper pulp and dirt impurity etc.
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
The peracetic acid soln concentration of deodorization of carrying out disinfection in above-mentioned steps (1) is 0.2-0.5%.
In above-mentioned steps (2), after refuse breaking, agitating heating temperature is 30-70 ℃.
In above-mentioned steps (2), paper pulp presents loosen collagen fibre shape different in size in water.
In above-mentioned steps (3), the concentration of the sorting solvent hydrogen peroxide of waste paper pulp is 5-15%.
In above-mentioned a kind of municipal refuse, the method for separating of waste paper pulp, plastics and dirt impurity, is characterized in that, whipping process adopts hinging type agitator to carry out.
beneficial effect of the present invention is:
(1) a set of technological process is when removing dirt impurity, can extract successively respectively and obtain highly purified secondary stock and plastic product, solved traditional handicraft and can only extract the drawback of single product, waste resources comprehensive utilization ratio and added value of product increase substantially.
(2) waste paper fibre and waste or used plastics are two kinds of garbage raw materials common in domestic waste, proportion is larger, part paper pulp fiber and dust impurity form in municipal refuse are tiny, easily mixed in together simultaneously, by this technique, can reach highly purified separated sorting.
(3) operation is simple for technical process, except sterilizing deodorization procedures, do not have with an organic solvent and other toxic solvent simultaneously, and the environmental protection of sorting solvent is pollution-free.
The specific embodiment
embodiment 1
In municipal refuse, a method for separating for waste paper pulp, plastics and dirt impurity, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: it is that in 0.2% peracetic acid soln, 24 h are processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal are filtered, and with clear water, clean solid content that the rubbish for the treatment of sorting is immersed in concentration;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 2 cm sizes, then in being the water of 30 ℃, temperature heats, adopt hinging type agitator to be stirred to paper pulp disperses in water, present loosen collagen fibre shape different in size, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, in mixture, light plastic component is separated with other component, thereby obtains sorting;
(3) sorting of waste paper pulp: adding concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment) is 5% hydrogenperoxide steam generator, fully stir latter static several minutes, now paper pulp is separated;
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
embodiment 2
In municipal refuse, a method for separating for waste paper pulp, plastics and dirt impurity, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: it is that in 0.3% peracetic acid soln, 22 h are processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal are filtered, and with clear water, clean solid content that the rubbish for the treatment of sorting is immersed in concentration;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 3 cm sizes, then in being the water of 40 ℃, temperature heats, adopt hinging type agitator to be stirred to paper pulp disperses in water, present loosen collagen fibre shape different in size, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, in mixture, light plastic component is separated with other component, thereby obtains sorting;
(3) sorting of waste paper pulp: adding concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment) is 8% hydrogenperoxide steam generator, fully stir latter static several minutes, now paper pulp is separated;
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
embodiment 3
In municipal refuse, a method for separating for waste paper pulp, plastics and dirt impurity, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: it is that in 0.4% peracetic acid soln, 18 h are processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal are filtered, and with clear water, clean solid content that the rubbish for the treatment of sorting is immersed in concentration;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 5 cm sizes, then in being the water of 50 ℃, temperature heats, adopt hinging type agitator to be stirred to paper pulp disperses in water, present loosen collagen fibre shape different in size, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, in mixture, light plastic component is separated with other component, thereby obtains sorting;
(3) sorting of waste paper pulp: adding concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment) is 10% hydrogenperoxide steam generator, fully stir latter static several minutes, now paper pulp is separated;
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
embodiment 4
In municipal refuse, a method for separating for waste paper pulp, plastics and dirt impurity, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: it is that in 0.5% peracetic acid soln, 12 h are processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal are filtered, and with clear water, clean solid content that the rubbish for the treatment of sorting is immersed in concentration;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 2 cm sizes, then in being the water of 70 ℃, temperature heats, adopt hinging type agitator to be stirred to paper pulp disperses in water, present loosen collagen fibre shape different in size, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, in mixture, light plastic component is separated with other component, thereby obtains sorting;
(3) sorting of waste paper pulp: adding concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment) is 6% hydrogenperoxide steam generator, fully stir latter static several minutes, now paper pulp is separated;
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
Claims (6)
1. a method for separating for waste paper pulp, plastics and dirt impurity in municipal refuse, is characterized in that, comprises the following steps:
(1) sterilizing deodorization is processed: the rubbish for the treatment of sorting is immersed in peracetic acid soln, and 12-24 h is processed at room temperature sterilizing deodorization, then on fine and close filter cloth, thimerosal is filtered, and with clear water, cleans solid content;
(2) sorting of light plastic: the municipal refuse after sterilizing deodorization is put in shear crusher, plastics and waste paper pulp are sheared into the fragment of 2-5 cm size, then in warm water, heating is stirred to paper pulp and disperses in water, by the standing room temperature that is cooled to of the rubbish troubled liquor that is mixing plastic flakes, paper pulp fiber and dirt impurity, light plastic is due to the less suspension of autologous density or float in water, and paper pulp fiber and dust is because density is sunk more greatly in water, thereby realize the sorting of light plastic;
(3) sorting of waste paper pulp: the hydrogenperoxide steam generator that adds higher concentration in the mixture of the paper pulp fiber precipitating to above-mentioned steps, dirt and other heavy plastics (as rigid plastics fragment), abundant stirred for several minute, because running into waste paper pulp, hydrogenperoxide steam generator can produce micro-bubble, can be by fiber fines flotation to solution upper strata, thus realize the separated of paper pulp and dirt impurity etc.;
(4) sorting of heavy plastics and dirt impurity: the above-mentioned heavy plastics that precipitate are effectively separated in scummer with grey earth mixtures, obtain pure waste or used plastics raw material.
2. the method for separating of waste paper pulp, plastics and dirt impurity in a kind of municipal refuse according to claim 1, is characterized in that, the peracetic acid soln concentration of the deodorization that carries out disinfection in described step (1) is 0.2-0.5%.
3. the method for separating of waste paper pulp, plastics and dirt impurity in a kind of municipal refuse according to claim 1, is characterized in that, in described step (2), after refuse breaking, agitating heating temperature is 30-70 ℃.
4. the method for separating of waste paper pulp, plastics and dirt impurity in a kind of municipal refuse according to claim 1, is characterized in that, in described step (2), paper pulp presents loosen collagen fibre shape different in size in water.
5. the method for separating of waste paper pulp, plastics and dirt impurity in a kind of municipal refuse according to claim 1, is characterized in that, in described step (3), the concentration of the sorting solvent hydrogen peroxide of waste paper pulp is 5-15%.
6. the method for separating of waste paper pulp, plastics and dirt impurity in a kind of municipal refuse according to claim 1, is characterized in that, whipping process adopts hinging type agitator to carry out.
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| CN201310693989.4A CN103639176A (en) | 2013-12-18 | 2013-12-18 | Method for sorting waste paper pulp, plastic and dust impurities from urban garbage |
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| CN201310693989.4A CN103639176A (en) | 2013-12-18 | 2013-12-18 | Method for sorting waste paper pulp, plastic and dust impurities from urban garbage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269192A (en) * | 2016-08-31 | 2017-01-04 | 江苏理文造纸有限公司 | Paper-making pulping tailings fiber recovery method |
| CN107983749A (en) * | 2017-11-30 | 2018-05-04 | 邓秀名 | A kind of clinical waste recovery and treatment method |
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| CN2442764Y (en) * | 2000-08-28 | 2001-08-15 | 刘小刚 | Device for separating and recovering of waste plastic film and paper |
| CN2801286Y (en) * | 2005-04-06 | 2006-08-02 | 统一环保科技股份有限公司 | Treatment device of reclaimed plastic and paper material |
| CN101318193A (en) * | 2008-04-30 | 2008-12-10 | 北京恒业村科技有限公司 | Wet separation method for domestic garbage |
| CN101658853A (en) * | 2008-08-27 | 2010-03-03 | 汤广武 | Method and device for classifying and recycling municipal refuse |
| WO2012040908A1 (en) * | 2010-09-28 | 2012-04-05 | Dow Global Technologies Llc | Deinking compositions and methods of use |
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2013
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5250100A (en) * | 1989-02-06 | 1993-10-05 | World Life Resource, Inc. | Solid waste recovery system |
| CN1087560A (en) * | 1992-05-15 | 1994-06-08 | 利乐拉瓦尔集团及财务有限公司 | Method and apparatus and products obtained therefrom from mixing waste separating paper fiber and plastics |
| CN2442764Y (en) * | 2000-08-28 | 2001-08-15 | 刘小刚 | Device for separating and recovering of waste plastic film and paper |
| CN2801286Y (en) * | 2005-04-06 | 2006-08-02 | 统一环保科技股份有限公司 | Treatment device of reclaimed plastic and paper material |
| CN101318193A (en) * | 2008-04-30 | 2008-12-10 | 北京恒业村科技有限公司 | Wet separation method for domestic garbage |
| CN101658853A (en) * | 2008-08-27 | 2010-03-03 | 汤广武 | Method and device for classifying and recycling municipal refuse |
| WO2012040908A1 (en) * | 2010-09-28 | 2012-04-05 | Dow Global Technologies Llc | Deinking compositions and methods of use |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269192A (en) * | 2016-08-31 | 2017-01-04 | 江苏理文造纸有限公司 | Paper-making pulping tailings fiber recovery method |
| CN107983749A (en) * | 2017-11-30 | 2018-05-04 | 邓秀名 | A kind of clinical waste recovery and treatment method |
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Application publication date: 20140319 |