CN104607440B - A kind of based on biological dewatered life refuse processing method - Google Patents

A kind of based on biological dewatered life refuse processing method Download PDF

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Publication number
CN104607440B
CN104607440B CN201410834645.5A CN201410834645A CN104607440B CN 104607440 B CN104607440 B CN 104607440B CN 201410834645 A CN201410834645 A CN 201410834645A CN 104607440 B CN104607440 B CN 104607440B
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China
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biological dewatered
french drain
base plate
life refuse
negative pressure
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CN201410834645.5A
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Chinese (zh)
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CN104607440A (en
Inventor
甄胜利
刘勇
刘泽军
陈望明
王正中
忻研冰
金晶
罗彬�
洪慧兰
倪雪
闫慧
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北京高能时代环境技术股份有限公司
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Publication of CN104607440A publication Critical patent/CN104607440A/en
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Abstract

The present invention provides a kind of based on biological dewatered life refuse processing method, comprise the steps: 1) pre-treatment: house refuse enters between negative pressure receives and carries out broken bag and artificial separation, the Bulky Waste that the Harmful Waste having potential pollution to threaten soil and groundwater sub-elected carry out harmless treatment, sub-elect enters after Bulky Waste crusher in crushing that step 3) processes, residue house refuse enters step 2) process, negative pressure receive between rate of ventilation 5 ~ 7 times per hour;2) biological dewatered: the residue house refuse after step 1) processes sends into biological dewatered storehouse, piles up for junk-heap body;Selectivity semipermeable membrane is covered on junk-heap body;3) post processing: to step 2) the mummification product that obtains and step 1) broken after Bulky Waste carry out Mechanical Crushing successively, rotary screen screening, magnetic separation, near-infrared sort and selecting crude drugs with winnower;4) end is disposed: be separately recovered utilization according to the difference of step 3) sorting product characteristics.

Description

A kind of based on biological dewatered life refuse processing method
Technical field
The invention belongs to field of garbage disposal, particularly relate to a kind of based on biological dewatered life refuse processing method.
Background technology
Due to residents'living habit and food feature, China's domestic waste has high-moisture percentage, high content of organics And low-calorie feature.The component of refuse that the garbage collecting and transferring mode of long-term mixed collection result also in entrance treatment facility is the most multiple Miscellaneous.The features described above of China's domestic waste result in the series of technical in garbage processing procedure: (1) high-moisture and High viscosity causes mechanical sorting technological adaptability poor;(2) garbage compost low quality;(3) content of organics height causes rubbish to be filled out Burying a percolate load high, intractability is big;(4) high-moisture percentage, high content of organics result also in waste treatment facility design Capacity increases;(5) high-moisture percentage, low heat value cause with high costs, the inefficiency of waste incineration etc..The most efficiently, drop economically Low msw water content has become crucial problem urgently to be resolved hurrily in Urban Domestic Waste Comprehensive Treatment.
Current domestic and international commonly used biological dewatered technology reduces house refuse moisture content.Biological dewatered ultimate principle Being: in the case of forced ventilation to utilize the heat of vaporization moisture that house refuse organic matter fermentation produces, forced ventilation accelerates water Divide volatilization, make house refuse moisture content be remarkably decreased, thus realize biological dewatered effect.Biological dewatered feature is without outward Heating source, needed for mummification, energy source is movable in the aerobic fermentation of microorganism, belongs to the bioenergy of material itself, is therefore a kind of Very economical energy-conservation drying technique.Biological dewatered purpose is to remove moisture as much as possible within the shortest time, Realize dehydration and drying and volume reduction decrement.Its product is general not for the purpose of soil is agricultural, but heat is reclaimed in landfill stabilization or burning Value, therefore need not reach highly to become thoroughly decomposed.The fall of suitable restriction micro-organisms is even required when to burn as final disposal target Solution ability, keeps the organic component in product as far as possible, thus improves product calorific value.Environment can be caused a lot of bad shadow by burning Ring, and the resource of rubbish, reusing of energy source cannot be realized.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of based on biological dewatered life refuse processing method. Primary domestic waste sequentially passes through pre-treatment, biological dewatered, post processing and end and disposes, it is achieved that house refuse is harmless Change, minimizing Treatment and recovery, recovery energy.
The present invention provide based on biological dewatered life refuse processing method, comprise the steps:
1) pre-treatment: house refuse enters between negative pressure reception, sequentially passes through garbage bag breaking machine broken bag and artificial separation processes, The Bulky Waste warp that the Harmful Waste that sub-electing has potential pollution to threaten soil and groundwater carry out harmless treatment, sub-elect Excessive part refuse breaking crusher machine laggard enter step 3) processes, residue house refuse enters step 2) process, negative pressure is every between receiving Hour rate of ventilation 5 ~ 7 times;
2) biological dewatered: the residue house refuse after step 1) processes sends into biological dewatered storehouse, piles up for junk-heap body;Rubbish Covering selectivity semipermeable membrane on rubbish heap body, utilizing microorganism aerobic fermentation is steam by the water transform in house refuse, knot Close forced ventilation to be discharged by steam;Wherein, described selectivity semipermeable membrane is by sandwiched poly-third in the middle of two-layer chemical fibre class textile material Alkene hollow-fibre membrane is composited;In described biological dewatered storehouse, oxygen concentration is 3mg/L ~ 8mg/L, and temperature is 20 DEG C ~ 55 DEG C, works as temperature Open ventilation and heat when degree is more than 55 DEG C, control maximum temperature less than 60 DEG C;Described microorganism aerobic fermentation time is 20 days ~ 25 days;
3) post processing: to step 2) the mummification product that obtains and step 1) broken after Bulky Waste carry out machinery successively Broken, rotary screen screening, magnetic separation, near-infrared sort and selecting crude drugs with winnower;
4) end is disposed: be separately recovered utilization according to the difference of step 3) sorting product characteristics.
As optimal technical scheme, step 2) described biological dewatered during junk-heap body turned over once every 7 ~ 10 days.
Preferably, described polypropylene hollow fiber membrane thickness be 40 μm ~ 50 μm, aperture be that 0.1 μm ~ 0.2 μm, porosity are 50%~55%。
As optimal technical scheme, the base plate between the reception of described negative pressure offering at least one guide french drain, guide is blind Ditch runs through the base plate between the reception of described negative pressure;Described guide french drain is provided with leachate collecting pipe, described leachate collecting Guan Lian Connect leachate collecting well.
Preferably, described base plate along guide french drain axially have 1% ~ 2% the gradient.
Preferably, described base plate tilts to have the gradient not less than 1% to the axial line of guide french drain.
Preferably, described leachate collecting pipe includes that tube wall is provided with the HDPE pipe of multiple hole and is coated on outside HDPE pipe Geotextiles, more preferably HDPE geotextiles.
As optimal technical scheme, the base plate in described biological dewatered storehouse offering at least one guide french drain, guide is blind Ditch runs through the base plate in described biological dewatered storehouse;Described guide french drain is provided with leachate collecting pipe, described leachate collecting Guan Lian Connect leachate collecting well.
Preferably, described base plate along guide french drain axially have 1% ~ 2% the gradient.
Preferably, described base plate tilts to have the gradient not less than 1% to the axial line of guide french drain.
Preferably, described leachate collecting pipe includes that tube wall is provided with the HDPE pipe of multiple hole and is coated on outside HDPE pipe Geotextiles, more preferably HDPE geotextiles.
The present invention can reach following beneficial effect:
The process of the present invention, will be raw based on the biological dewatered life refuse processing method biological dewatered process of 20 ~ 25 days Msw water content of living is reduced to less than 25% and improves Lower heat value to more than 2500Kcal/kg, and mummification product is post-treated will Primary waste reduction alive 45%, solves that domestic waste sorting is difficult, compost quality is low, sanitary landfills amount big, percolate processes Load is high, the low inferior series of problems of firing efficiency, makes house refuse achieve innoxious, minimizing Treatment and recovery, energy Sourceization utilizes.
A kind of urban life rubbish based on biological dewatered life refuse processing method to entering biological dewatered storehouse of the present invention Rubbish is without any particular/special requirement.Primary domestic waste receives through negative pressure, directly enter without carrying out any cracking and sorting after broken bag Enter biological dewatered storehouse, avoid high-moisture percentage sorting consumer waste weak effect, the efficiency of separation this skill low in pretreatment stage An art difficult problem.
The present invention is a kind of uses selectivity semipermeable membrane to cover junk-heap body based on biological dewatered life refuse processing method. Described selectivity semipermeable membrane is by least including that a layer polypropylene hollow-fibre membrane and two-layer chemical fibre class textile material are two-sided compound Constitute;Described polypropylene hollow fiber membrane thickness be 40 μm ~ 50 μm, aperture be 0.1 μm ~ 0.2 μm, porosity be 50% ~ 55%;Institute State polypropylene hollow fiber membrane 0.15Mpa ~ 0.2Mpa, room temperature working condition under, it is possible to make microorganism aerobic fermentation produce CO2Pass through with steam, intercept antibacterial, colloidal suspended substance, granule, pathogenic bacteria and the foul smell in the junk-heap body of more than 90% big Molecules etc. pass through, and the most effectively stop external environment moisture to enter junk-heap body.
The present invention a kind of based on biological dewatered life refuse processing method for preventing garbage leachate to soil, subsoil water Pollution, negative pressure receive between and biological dewatered storehouse base plate be provided with garbage leachate collect with guide system.
The present invention is a kind of carries out biological dewatered place based on biological dewatered life refuse processing method to domestic waste After reason, the notable decrement of house refuse, mummification product moisture content less than 25%, Lower heat value reduce more than 2500Kcal/kg, stickiness, Can sorting improve.
The present invention is a kind of based on biological dewatered domestic garbage treating system and method, biological dewatered product is used broken, Screening, magnetic separation, the near-infrared screening post processing such as PVC, selecting crude drugs with winnower.Owing to product moisture content is low, the efficiency of separation significantly improves.
The present invention a kind of based on biological dewatered domestic garbage treating system and method to sorting product according to respective not Same characteristic, takes resource recycling, compost respectively, prepares the ends such as garbage derivatived fuel, burning electricity generation, sanitary landfills Put, truly achieve innoxious, the minimizing of Disposal of Domestic, resource and energy.
Accompanying drawing explanation
Fig. 1 is the process chart based on biological dewatered life refuse processing method of the present invention;
Fig. 2 be in the present invention negative pressure receive between structural representation;
Fig. 3 is biological dewatered storehouse part-structure schematic diagram in the present invention;
Fig. 4 is between the negative pressure of the present invention receives and the guide french drain structural representation in biological dewatered storehouse;
Fig. 5 is the leachate collecting tube section schematic diagram of the present invention.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art is permissible It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As it is shown in figure 1, the present invention based on biological dewatered life refuse processing method, abandoned broken point of broken bag The traditional life garbage disposal flow process that choosing (fermentation) recycles, creative proposes the biological dewatered rear place of pre-treatment Reason end disposes four steps, and technology environmental protection, on external environment conditions such as water, air, soil without impact, and without methane isothermal chamber gas Body discharges.In the better embodiment of the present invention, specifically comprise the following steps that
1) pre-treatment: house refuse enter negative pressure receive between 1, sequentially pass through at garbage bag breaking machine broken bag and artificial separation Reason, the Harmful Waste (old and useless battery etc.) that soil and groundwater exists potential pollution threat sub-elected carry out innoxious place Reason, Bulky Waste (in this area, Bulky Waste refers to that size is more than the furniture rubbish of 500mm, such as sofa, bed etc.) are through excessive Part refuse breaking crusher machine laggard enter step 3) processes, residue house refuse enters step 2) process, negative pressure receive between 1 per hour Rate of ventilation 5 ~ 7 times;
2) biological dewatered: the residue house refuse after step 1) processes sends into biological dewatered storehouse 2, piles up for junk-heap body 20;For preventing foul smell, pathogen etc. from polluting environment, junk-heap body covers selectivity semipermeable membrane 21, utilizes microorganism aerobic to send out Water transform in house refuse is steam by ferment, and in conjunction with forced ventilation and turn over (first 7 days of rubbish biological mummification is the most right in good time Heap body is turned over, and turns over once every 7 days) damp-heat water steam is discharged, reduce msw water content;Wherein, selectivity is semi-transparent Film 21 is composited by sandwiched polypropylene hollow fiber membrane in the middle of two-layer chemical fibre class textile material, polypropylene hollow fiber membrane thickness Be 40 μm ~ 50 μm, aperture be 0.1 μm ~ 0.2 μm, porosity be 50% ~ 55%, polypropylene hollow fiber membrane 0.15Mpa ~ 0.2Mpa, room temperature working condition under, it is possible to make microorganism aerobic fermentation produce CO2Pass through with steam, intercept more than 90% Junk-heap body in antibacterial, colloidal suspended substance, granule, pathogenic bacteria and foul smell macromole etc. pass through, simultaneously effectively stop external environment Moisture enters junk-heap body;In biological dewatered storehouse 2, oxygen concentration is 3mg/L ~ 8mg/L, and temperature is 20 DEG C ~ 55 DEG C, when temperature exceedes Open ventilation and heat when 55 DEG C, control maximum temperature less than 60 DEG C;After microorganism aerobic ferments 20 days ~ 25 days, treat selectivity Stop when escaping without obvious steam outside semipermeable membrane 21 ventilating.After biological dewatered, house refuse moisture content is reduced to not quite In 25%, Lower heat value is more than 2500Kcal/kg, and mummification product is post-treated can be by primary waste reduction 45% alive;
3) post processing: step 2) the mummification product moisture content that obtains is low, stickiness reduces, can sorting be obviously enhanced, to dry Change product and step 1) broken after Bulky Waste carry out Mechanical Crushing (size 60mm), rotary screen screening, magnetic separation, the reddest successively Outer sorting (PVC(polrvinyl chloride), the efficiency of separation is more than 95%) and selecting crude drugs with winnower;
4) end is disposed: sorting consumer waste can be the visibly different various sorting products of character by step 3), such as ferrum Metal, nonferrous metal, inert material, PVC, mummification rubbish etc., then carry out respectively for each component recycling, compost, preparation The ends such as garbage derivatived fuel, burning electricity generation, sanitary landfills are disposed.
For preventing garbage leachate to soil, the pollution of subsoil water, the present invention is between negative pressure reception and biological dewatered storehouse Structure is further improved, negative pressure receive between 1 and biological dewatered storehouse 2 base plate be provided with garbage leachate collect and guide System.
The most as shown in Figure 2 and Figure 4, at least one guide french drain 11(is offered in this reality on 1 base plate 10 between negative pressure receives Executing in mode is one, is located at the centre of 1 between negative pressure reception), guide french drain 11 runs through the base plate between the reception of (elongated) negative pressure;Lead Being provided with leachate collecting pipe 12 in row's french drain, leachate collecting pipe connects leachate collecting well.
For ease of Leachate site flow into leachate collecting well, base plate along guide french drain axially have 1% ~ 2% the gradient.And be The liquid being easy to junk-heap body flows into leachate collecting pipe 12, and base plate 10 tilts to have not less than 1% to the axial line of guide french drain 11 The gradient.
As it is shown in figure 5, in the present invention, leachate collecting pipe 12 includes that tube wall is provided with multiple hole (aperture 20mm ~ 25mm) HDPE pipe 121 and be coated on HDPE(high density polyethylene (HDPE)) geotextiles 122(HDPE geotextiles outside pipe).
As it is shown on figure 3, biological dewatered storehouse 2 a size of 50m × 10m × 2m, xoncrete structure, its base plate 22 offers to A few guide french drain 23(present embodiment is two), guide french drain runs through the base plate 22 in biological dewatered storehouse 2;Guide french drain Being provided with leachate collecting pipe in 23, leachate collecting pipe connects leachate collecting well.
Between receiving with negative pressure 1, flowing into leachate collecting well for ease of Leachate site, base plate axially has 1% along guide french drain The gradient of ~ 2%.And the liquid for ease of junk-heap body flows into leachate collecting pipe, base plate tilts to have to the axial line of guide french drain The gradient not less than 1%.
With between negative pressure reception 1, leachate collecting pipe includes that tube wall is provided with the HDPE of multiple hole (aperture 20mm ~ 25mm) Pipe and be coated on HDPE(high density polyethylene (HDPE)) geotextiles (HDPE geotextiles) outside pipe, geotextiles can prevent leachate collecting pipe Silting.
Embodiment described above is only the preferred embodiment lifted by absolutely proving the present invention, the protection model of the present invention Enclose and be not limited to this.The equivalent that those skilled in the art are made on the basis of the present invention substitutes or conversion, all in the present invention Protection domain within.Protection scope of the present invention is as the criterion with claims.

Claims (10)

1. one kind based on biological dewatered life refuse processing method, it is characterised in that comprise the steps:
1) pre-treatment: house refuse enters between negative pressure reception, sequentially passes through garbage bag breaking machine broken bag and artificial separation processes, sorting The Bulky Waste process that the Harmful Waste having potential pollution to threaten soil and groundwater gone out carry out harmless treatment, sub-elect Enter step 3) after Bulky Waste crusher in crushing to process, remain house refuse entrance step 2) process, negative pressure is the least between receiving Time rate of ventilation 5 ~ 7 times;
2) biological dewatered: the residue house refuse after step 1) processes sends into biological dewatered storehouse, piles up for junk-heap body;Rubbish heap Covering selectivity semipermeable membrane on body, utilizing microorganism aerobic fermentation is steam by the water transform in house refuse, in conjunction with strong System is ventilated and is discharged by steam;Wherein, described selectivity semipermeable membrane is by sandwiched polypropylene in the middle of two-layer chemical fibre class textile material Hollow fiber film is composited;In described biological dewatered storehouse, oxygen concentration is 3mg/L ~ 8mg/L, and temperature is 20 DEG C ~ 55 DEG C, when temperature surpasses Open ventilation and heat when crossing 55 DEG C, control maximum temperature less than 60 DEG C;Described microorganism aerobic fermentation time is 20 days ~ 25 My god;
3) post processing: to step 2) the mummification product that obtains and step 1) broken after Bulky Waste carry out successively Mechanical Crushing, Rotary screen screening, magnetic separation, near-infrared sorting and selecting crude drugs with winnower;
4) end is disposed: be separately recovered utilization according to the difference of step 3) sorting product characteristics.
Life refuse processing method the most according to claim 1, it is characterised in that step 2) described biological dewatered during Junk-heap body was turned over once every 7 ~ 10 days.
Life refuse processing method the most according to claim 1, it is characterised in that described polypropylene hollow fiber membrane thickness Be 40 μm ~ 50 μm, aperture be 0.1 μm ~ 0.2 μm, porosity be 50% ~ 55%.
Life refuse processing method the most according to claim 1, it is characterised in that open on the base plate between the reception of described negative pressure Being provided with at least one guide french drain, guide french drain runs through the base plate between the reception of described negative pressure;Described guide french drain is provided with and oozes drip Liquid collecting pipe, described leachate collecting pipe connects leachate collecting well.
Life refuse processing method the most according to claim 4, it is characterised in that described base plate is axial along guide french drain There is the gradient of 1% ~ 2%.
Life refuse processing method the most according to claim 4, it is characterised in that described base plate is to the axle center of guide french drain Line tilts to have the gradient not less than 1%.
Life refuse processing method the most according to claim 4, it is characterised in that described leachate collecting pipe includes tube wall The HDPE pipe being provided with multiple hole and the geotextiles being coated on outside HDPE pipe.
Life refuse processing method the most according to claim 1, it is characterised in that open on the base plate in described biological dewatered storehouse Being provided with at least one guide french drain, guide french drain runs through the base plate in described biological dewatered storehouse;Described guide french drain is provided with and oozes drip Liquid collecting pipe, described leachate collecting pipe connects leachate collecting well.
Life refuse processing method the most according to claim 8, it is characterised in that described base plate is axial along guide french drain Having the gradient of 1% ~ 2%, described base plate tilts to have the gradient not less than 1% to the axial line of guide french drain.
Life refuse processing method the most according to claim 8, it is characterised in that described leachate collecting pipe includes pipe Wall is provided with the geotextiles that the HDPE of multiple hole manages and is coated on outside HDPE pipe.
CN201410834645.5A 2014-12-30 2014-12-30 A kind of based on biological dewatered life refuse processing method CN104607440B (en)

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CN105798049B (en) * 2016-03-22 2018-03-23 张共敏 Villages and small towns technology for harmless disposal of domestic garbage
CN105834201A (en) * 2016-06-06 2016-08-10 北京润宇环保工程有限公司 Bio-drying dehydration method and system for household garbage
CN106090933A (en) * 2016-06-17 2016-11-09 北京高能时代环境技术股份有限公司 The method and device of one way of life waste incineration and generating electricity
CN106824984A (en) * 2017-01-12 2017-06-13 湖南万容科技股份有限公司 A kind of life refuse processing method
CN107335676A (en) * 2017-03-31 2017-11-10 蓝天众成环保工程有限公司 A kind of method that urban and rural domestic refuse is pre-processed using mechanical biological method
CN107008735A (en) * 2017-05-19 2017-08-04 贵州欧瑞信环保科技有限责任公司 A kind of Combustion Properties of Municipal Solid Waste gasification process
CN108300533A (en) * 2018-04-18 2018-07-20 光大环保技术研究院(南京)有限公司 A kind of garbage derivatived fuel and preparation method thereof
CN108558290A (en) * 2018-05-18 2018-09-21 阿尔法环能生物能源有限公司 A method of manufacturing concrete using aging rubbish
CN110681668A (en) * 2019-09-12 2020-01-14 广东绿洁能源科技有限公司 Garbage processing method, device, equipment and storage medium

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CN1157264C (en) * 2001-05-30 2004-07-14 吴桐 Comprehensive city garbage treating method and system
CN1195688C (en) * 2003-01-05 2005-04-06 江苏正昌集团有限公司 City domestic garbage treating process
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