CN101318193A - Wet separation method for domestic garbage - Google Patents
Wet separation method for domestic garbage Download PDFInfo
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- CN101318193A CN101318193A CNA2008101056776A CN200810105677A CN101318193A CN 101318193 A CN101318193 A CN 101318193A CN A2008101056776 A CNA2008101056776 A CN A2008101056776A CN 200810105677 A CN200810105677 A CN 200810105677A CN 101318193 A CN101318193 A CN 101318193A
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Abstract
The invention relates to a water selection method for domestic waste, which includes the following steps: (1) ragging, wherein, massive recoverable materials and other materials are separately sorted out; (2) crushing; (3) natural floatation, wherein, materials after crushing are put into water and left standing, and materials with a specific gravity lighter than that of water float up onto the water surface naturally; (4) air floatation, wherein, air is inflated from a bottom, bubbles attached to material pellets are formed, and secondary light materials which have a lighter specific gravity float up onto the water surface by carrying the bubbles; (5) swirl separation, wherein, the swirl is formed in the water, heavy materials with a larger specific gravity are left at the water bottom, middle materials which are lighter than the heavy materials flow together with the water under the impact of the swirl, and the middle materials and the heavy materials are separately screened and filtered from the water; and (6) flocculating settling, wherein, a flocculant is added in so as to carry out the flocculating settling to the water, sludge in the water is sunk at the water bottom, and upper clean water is recycled. The water selection method of the invention effectively classifies the domestic waste into a plurality of types according to the difference of quality and density, thus providing favorable conditions for recycling domestic waste.
Description
Technical field
The present invention relates to a kind of processing method of solid waste, is a kind of wet concentration method of house refuse specifically, belongs to environmental technology field.
Background technology
The solid waste of urban life sub-district mostly is the rubbish that general resident's daily life produces, mainly comprise waste paper, plastics, metal, glass, pottery, dust, castoff or the like, because the complicated component of these solid waste, be difficult to carry out unified recycling, basically all be to adopt landfill and two kinds of methods of burning to handle at present, all there is the defective that is difficult to overcome in these processing modes, for example for landfill disposal, need take a large amount of landfill places, and there is the danger of pollutions such as diffusate, has been difficult to find suitable landfill place for many large-and-medium size cities at present; For burning disposal, the construction of burning facility and operating cost are all than higher, need consumes energy, also there is smoke pollution, although people are continually developing new incineration technology and smoke gas treatment technology at present, but thisly pollute the latent defect that mode is converted to another kind of pollution mode and still can not fundamentally overcome with a kind of, therefore at the complexity of house refuse composition, with the difference of house refuse according to mass density, divide and elect the different material of some classes as, recycle the very necessity that seems at these different materials.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of wet separation method for domestic garbage, this method with the difference of house refuse according to mass density, is divided into some classes effectively, for the recycling of house refuse provides advantage.
The present invention realizes that the technical scheme of above-mentioned purpose is:
A kind of wet separation method for domestic garbage comprises the following steps:
(1) ragging sorts out the recoverable material and the unclassified stores of bulk, so that handle separately;
(2) fragmentation;
(3) natural flotation is put into water with the material after the fragmentation and is left standstill, and than floating on the water surface on the light material nature of heavy water, these light feed separation is come out;
(4) air supporting from bottom inflation, forms attached to the bubble on the material particles, and time light material that proportion is lighter is carrying on bubble climbs up on top of the water, and the light feed separation of these times is come out;
(5) rotational flow sorting forms eddy flow in water, heavy heavy material is stayed the bottom, and the middle material lighter than heavy material flows with water under eddy flow impacts, and middle material and heavy material are separated;
(6) flocculation sediment, sieving from water is come out with middle material and heavy material respectively, adds flocculant water is carried out flocculation sediment, and the mud in the water sinks to the bottom, and supernatant water recycles.
The course of work of the present invention is: by artificial or mechanical mode, the recoverable material and the unclassified stores of bulk are sorted out, bulk metal wherein, plastic plate, the recoverable material of cardboard etc. can be recycled according to prior art, the unclassified stores of bulk mainly is a stone, the mineral substance material that inorganic salts such as concrete block are formed, can pulverize the back according to building waste is used as filler or is used to make construction material etc., even it is also smaller behind accumulation or the landfill to the pollution of environment, processing cost is lower, the standard of letter sorting is decided according to the letter sorting technology that is adopted, that sorts is thin more, utilization to recoverable material is abundant more, adverse effect to subsequent technique is more little, the remaining material in letter sorting back carries out fragmentation, carry out repeatedly the wet concentration of different principle after the fragmentation, the material that the proportion of at first separating is lighter than water mostly is wooden unit and foamed plastics etc., can be used as light building material raw material and other raw materials through pulverizing after separating, separate the proportion time light material imitative or heavier slightly then than water with water, mostly be shredded paper, cloth, partly plastic and fresh vegetables etc., these materials mostly are organic materials, can be used as fuel etc., the middle material that later separation is come out mostly is the smaller particles thing that inorganic salts constitute, can or carry out stabilization processes as the building materials raw material, heavy material mostly is metal and bigger stone, can further be separated into metal and stone, as metallurgical raw material and building materials raw material, comprise organic matter and inorganic matter in the mud behind the flocculation sediment, can be used as the building materials raw material, burned brick etc. for example, supernatant water can be recycling.By this classification and sorting, can realize the preliminary classification of rubbish material, help recycling according to the material properties after the sorting, the recycling for life rubbish material provides advantage thus.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention.
The specific embodiment
Referring to Fig. 1, the invention provides a kind of wet separation method for domestic garbage, comprise the following steps:
(1) ragging sorts out the recoverable material and the unclassified stores of bulk, so that handle separately;
(2) fragmentation;
(3) natural flotation is put into water with the material after the fragmentation and is left standstill, and than floating on the water surface on the light material nature of heavy water, these light feed separation is come out;
(4) air supporting from bottom inflation, forms attached to the bubble on the material particles, and time light material that proportion is lighter is carrying on bubble climbs up on top of the water, and the light feed separation of these times is come out;
(5) rotational flow sorting forms eddy flow in water, heavy heavy material is stayed the bottom, and the middle material lighter than heavy material flows with water under eddy flow impacts, and middle material and heavy material are separated;
(6) flocculation sediment, sieving from water is come out with middle material and heavy material respectively, adds flocculant water is carried out flocculation sediment, and the mud in the water sinks to the bottom, and supernatant water recycles.
In step (1), can adopt manual sorting's mode to sort, also can adopt suitable sorting arrangement to sort, but under present technical background, manual sorting's cost and effect may be better than mechanical sorting, but working condition is more abominable, should progressively develop to mechanical sorting.The standard of letter sorting should determine according to the benefit brought after letter sorting cost and the letter sorting, and letter sorting thorough more be easy to follow-up classification more and handle, but the cost of letter sorting can increase.
In step (2), can adopt kibbler roll or impact crusher to carry out fragmentation, this disintegrating machine is adapted to the character of house refuse material, and the final material particles that forms is to be advisable below 8mm, according to actual conditions, also can adopt greater or lesser particle.In case of necessity, can adopt the two-stage fragmentation, after through the impact crusher fragmentation, adopt the roll crushing crusher machine again.
In step (3), in the corresponding wet concentration of material input pond, can rely on slowly ascending current to drive light material and rise, the light material that will accumulate on the water surface by surperficial Cinder Machine or grab bucket takes out.
In step (4), can add suitable flotation agent and improve flotation effect.
In step (5), can form a swirling water current by modes such as pumps, proportion also can be moved with current than the material that water weighs about 2 times, still sinking to water-bed material is exactly described heavy material, these heavy materials all are the inorganic salts material of metal and larger particles basically, current are introduced another pond, comprise the water of heavy material and comprise that the water of middle material precipitates, the sediment of separation is described middle material and heavy material.
In step (6), flocculant evenly dropped into flocculate in the water and precipitate, mud to precipitation concentrates and press filtration, conditions being possessed, also can sieve earlier, wherein larger particles (all be basically inorganic material piece such as stone grit or rigid plastics etc. can not biolytic organic materials) screening is come out.
Claims (10)
1. a wet separation method for domestic garbage is characterized in that comprising the following steps:
(1) ragging sorts out the recoverable material and the unclassified stores of bulk, so that handle separately;
(2) fragmentation;
(3) natural flotation is put into water with the material after the fragmentation and is left standstill, and than floating on the water surface on the light material nature of heavy water, these light feed separation is come out;
(4) air supporting from bottom inflation, forms attached to the bubble on the material particles, and time light material that proportion is lighter is carrying on bubble climbs up on top of the water, and the light feed separation of these times is come out;
(5) rotational flow sorting forms eddy flow in water, heavy heavy material is stayed the bottom, and the middle material lighter than heavy material flows with water under eddy flow impacts, and middle material and heavy material are separated;
(6) flocculation sediment after sieving is come out from water with middle material and heavy material respectively, adds flocculant water is carried out flocculation sediment, and the mud in the water sinks to the bottom, and supernatant water recycles.
2. wet separation method for domestic garbage as claimed in claim 1 is characterized in that in step (1), adopts manual sorting's mode to sort or adopt sorting arrangement to sort.
3. wet separation method for domestic garbage as claimed in claim 1 is characterized in that in step (2), adopts kibbler roll or impact crusher to carry out fragmentation.
4. wet separation method for domestic garbage as claimed in claim 1 is characterized in that adopting the two-stage fragmentation in step (2), through the impact crusher fragmentation, adopts the roll crushing crusher machine more earlier.
5. wet separation method for domestic garbage as claimed in claim 1, it is characterized in that relying in step (3) slowly, ascending current drives light material rising.
6. wet separation method for domestic garbage as claimed in claim 1 is characterized in that the light material that will accumulate on the water surface by surperficial Cinder Machine or grab bucket takes out in step (3).
7. wet separation method for domestic garbage as claimed in claim 1 is characterized in that adding flotation agent in step (4).
8. wet separation method for domestic garbage as claimed in claim 1 is characterized in that in step (5) forming a swirling water current, and still sinking to water-bed material is exactly described heavy material, with water flow be described in material.
9. wet separation method for domestic garbage as claimed in claim 1, the water of material precipitates with the water that contains heavy material in it is characterized in that will containing in step (5), and the sediment of separation is described middle material and heavy material.
10. wet separation method for domestic garbage as claimed in claim 1 is characterized in that in step (6) flocculant evenly dropped into and flocculates in the water and precipitate, and the mud of precipitation is concentrated and press filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101056776A CN101318193A (en) | 2008-04-30 | 2008-04-30 | Wet separation method for domestic garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101056776A CN101318193A (en) | 2008-04-30 | 2008-04-30 | Wet separation method for domestic garbage |
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| CN101318193A true CN101318193A (en) | 2008-12-10 |
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| CNA2008101056776A Pending CN101318193A (en) | 2008-04-30 | 2008-04-30 | Wet separation method for domestic garbage |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850351A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for generating electricity by pyrolysis and incineration of waste |
| CN101850350A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for treating urban solid waste by oxygen-rich gasification |
| CN101856663A (en) * | 2010-06-02 | 2010-10-13 | 曾庆汛 | System and method for comprehensively disposing domestic garbage |
| CN101856665A (en) * | 2010-06-02 | 2010-10-13 | 管士柱 | Method and equipment for disposing domestic garbage |
| CN102228859A (en) * | 2011-06-08 | 2011-11-02 | 潍坊金丝达实业有限公司 | Garbage washing flotation machine |
| CN103195034A (en) * | 2013-03-29 | 2013-07-10 | 广东大众农业科技股份有限公司 | Low-cost method for clearing water-surface trash |
| CN103551242A (en) * | 2013-11-06 | 2014-02-05 | 张书礼 | Garbage separation equipment |
| CN103639176A (en) * | 2013-12-18 | 2014-03-19 | 青岛福创环境科技有限公司 | Method for sorting waste paper pulp, plastic and dust impurities from urban garbage |
| CN106269791A (en) * | 2016-08-17 | 2017-01-04 | 广东万谷环保科技有限公司 | The method that one way of life rubbish water processes |
| CN106378249A (en) * | 2016-08-30 | 2017-02-08 | 河南威猛振动设备股份有限公司 | Two-time brick-concrete separating process for building wastes |
| CN106670215A (en) * | 2017-02-17 | 2017-05-17 | 安德里茨（中国）有限公司 | Material processing system and method |
| CN107737666A (en) * | 2017-11-16 | 2018-02-27 | 湖南江冶机电科技股份有限公司 | A kind of current bubble method for separating and system for mixing pellet material |
| CN107940464A (en) * | 2017-11-16 | 2018-04-20 | 万元坤 | House refuse densimetry sorting process and equipment |
| CN108855587A (en) * | 2018-04-24 | 2018-11-23 | 浙江双金机械集团股份有限公司 | A kind of building waste method for screening and separating |
| CN109939812A (en) * | 2019-03-15 | 2019-06-28 | 河南威猛振动设备股份有限公司 | A kind of fixed hydraulic flotation machine |
| CN110216024A (en) * | 2019-06-08 | 2019-09-10 | 刘迎飞 | A kind of carton recycling adhesive tape separating flotation equipment |
| CN111346895A (en) * | 2020-02-11 | 2020-06-30 | 深圳市华域环保科技有限公司 | Fine treatment method for impurities in building waste soil |
| CN113522513A (en) * | 2021-07-16 | 2021-10-22 | 山东科技大学 | Wet sorting process for waste circuit boards |
-
2008
- 2008-04-30 CN CNA2008101056776A patent/CN101318193A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850350A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for treating urban solid waste by oxygen-rich gasification |
| CN101850351A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for generating electricity by pyrolysis and incineration of waste |
| CN101856663A (en) * | 2010-06-02 | 2010-10-13 | 曾庆汛 | System and method for comprehensively disposing domestic garbage |
| CN101856665A (en) * | 2010-06-02 | 2010-10-13 | 管士柱 | Method and equipment for disposing domestic garbage |
| CN101856663B (en) * | 2010-06-02 | 2013-02-20 | 曾庆汛 | System and method for comprehensively disposing domestic garbage |
| CN102228859A (en) * | 2011-06-08 | 2011-11-02 | 潍坊金丝达实业有限公司 | Garbage washing flotation machine |
| CN103195034A (en) * | 2013-03-29 | 2013-07-10 | 广东大众农业科技股份有限公司 | Low-cost method for clearing water-surface trash |
| CN103551242A (en) * | 2013-11-06 | 2014-02-05 | 张书礼 | Garbage separation equipment |
| CN103639176A (en) * | 2013-12-18 | 2014-03-19 | 青岛福创环境科技有限公司 | Method for sorting waste paper pulp, plastic and dust impurities from urban garbage |
| CN106269791B (en) * | 2016-08-17 | 2018-06-26 | 广东万谷环保科技有限公司 | A kind of method of house refuse water process |
| CN106269791A (en) * | 2016-08-17 | 2017-01-04 | 广东万谷环保科技有限公司 | The method that one way of life rubbish water processes |
| CN106378249B (en) * | 2016-08-30 | 2019-07-02 | 河南威猛振动设备股份有限公司 | Brick mixes separating technology twice for a kind of building castoff |
| CN106378249A (en) * | 2016-08-30 | 2017-02-08 | 河南威猛振动设备股份有限公司 | Two-time brick-concrete separating process for building wastes |
| CN106670215A (en) * | 2017-02-17 | 2017-05-17 | 安德里茨（中国）有限公司 | Material processing system and method |
| CN107940464A (en) * | 2017-11-16 | 2018-04-20 | 万元坤 | House refuse densimetry sorting process and equipment |
| CN107737666A (en) * | 2017-11-16 | 2018-02-27 | 湖南江冶机电科技股份有限公司 | A kind of current bubble method for separating and system for mixing pellet material |
| CN107940464B (en) * | 2017-11-16 | 2019-03-19 | 万元坤 | House refuse densimetry sorting process and equipment |
| CN108855587A (en) * | 2018-04-24 | 2018-11-23 | 浙江双金机械集团股份有限公司 | A kind of building waste method for screening and separating |
| CN108855587B (en) * | 2018-04-24 | 2022-04-19 | 浙江双金机械集团股份有限公司 | Construction waste screening and separating method |
| CN109939812A (en) * | 2019-03-15 | 2019-06-28 | 河南威猛振动设备股份有限公司 | A kind of fixed hydraulic flotation machine |
| CN110216024A (en) * | 2019-06-08 | 2019-09-10 | 刘迎飞 | A kind of carton recycling adhesive tape separating flotation equipment |
| CN110216024B (en) * | 2019-06-08 | 2021-12-07 | 扬州祥恒包装有限公司 | Carton recovery adhesive tape separation flotation equipment |
| CN111346895A (en) * | 2020-02-11 | 2020-06-30 | 深圳市华域环保科技有限公司 | Fine treatment method for impurities in building waste soil |
| CN111346895B (en) * | 2020-02-11 | 2021-01-08 | 深圳市华域环保科技有限公司 | Fine treatment method for impurities in building waste soil |
| CN113522513A (en) * | 2021-07-16 | 2021-10-22 | 山东科技大学 | Wet sorting process for waste circuit boards |
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Open date: 20081210 |