CN105693123B - The method and its clean applications in bituminous paving that domestic garbage incineration flyash is granulated altogether with cement, silicon ash, flyash - Google Patents
The method and its clean applications in bituminous paving that domestic garbage incineration flyash is granulated altogether with cement, silicon ash, flyash Download PDFInfo
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- CN105693123B CN105693123B CN201610136998.7A CN201610136998A CN105693123B CN 105693123 B CN105693123 B CN 105693123B CN 201610136998 A CN201610136998 A CN 201610136998A CN 105693123 B CN105693123 B CN 105693123B
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- flyash
- domestic garbage
- garbage incineration
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses method and its clean utilization in bituminous paving that a kind of domestic garbage incineration flyash is granulated altogether with cement, silicon ash, flyash.Domestic garbage incineration flyash, cement, silicon ash and flyash are weighed respectively, adds cement, silicon ash, flyash, domestic garbage incineration flyash successively, and dry powder mixing is required to after adding a kind of powder every time；Then the water of total dry powder quality 20~30% is added, stirs, vibrate health 7 days after shaping；Finally crush and be granulated.Granulated pellet is added to progress road surface application in asphalt in the form of substituting part miberal powder or gathering materials.The domestic garbage incineration flyash asphalt can use in top course, basic unit, and the road surface pavement performance indices of laying meet code requirement.In application process, the heavy metal and its compound Leaching in domestic garbage incineration flyash are qualified, will not cause secondary pollution to environment, realize recycling and the clean utilization of domestic garbage incineration flyash on road surface.
Description
Technical field
Clean applications the present invention relates to domestic garbage incineration flyash prilling process and its in bituminous paving, belong to solid
Offal treatment disposal and recycling, road paving materials and its processing technology of preparing crossing domain.
Background technology
Domestic garbage incineration flyash is the trapping thing and flue and chimney bottom of municipal solid waste incinerator flue gas purification system
The bottom ash of sedimentation.Research shows, the poisonous and harmful substances such as dioxin and heavy metal are contained in domestic garbage incineration flyash, because
This, China is classified as《National Hazard waste register》In HW18 class hazardous wastes, it is improper conduct oneself well put and can directly threaten around
Environment and human health, and public group event can be triggered and then influence waste incineration industry and actively developed in a healthy way.House refuse
The toxicity of flying ash and the characteristic for easily causing secondary pollution are also important original that municipal solid waste incinerator addressing is queried by the public
Cause.
At present, the main disposal options of domestic incineration of refuse flyash and shortcoming have：(1) it is directly entered hazard waste landfill
Field landfill.Processing cost is high, and the region of no landfill yard has secondary pollution risk in long distance transportation；(2) chelating agent is stable
Enter sanitary filling field after change or cement solidification to fill.The unqualified phenomenon of Leaching happens occasionally, and secondary pollution risk is high.Deposit
Increase-volume amount is big, landed property resource the problems such as.With the popularization of waste incineration, sanitary filling field progressively close down or landfill yard
Capacity saturation, domestic garbage incineration flyash face the risk that can not be filled；(3) cement kiln synergic processing.Cl element influences cement
Quality, cement use range can be limited, equipment corrosion be endangered larger.
The disposal technology of developed countries flying dust has：Germany is buried using mine, and Japan uses high-temperature fusion, and the U.S. is adopted
With flying dust clinker mixing disposal etc..In view of China's national situation, investment cost of disposal and current law limitation etc., above prosperity state
The technology that family uses is not suitable for China's flying dust disposal.
Therefore, development environment is friendly, meets the incineration of refuse flyash disposal technology of China's economic development, fundamentally changes
Flying dust disposal actuality, the contradiction between the current waste incineration industry energy, environment, resource three is broken through, turns into Chinese rubbish and burns
Burn the Major Strategic Demand of industry value chain.
The present invention intends on the basis of domestic garbage incineration flyash heavy metal classes material cement solidification technology, will be a variety of inorganic
Binder materials differs according to particle size to be formed close-graded and is granulated, and further flies the fine and close consumer waste incineration after granulation
Ash particle is applied in road surfacing, to realize recycling clean applications of the domestic garbage incineration flyash in road surface.
The content of the invention
In view of this, the invention provides a kind of method that domestic garbage incineration flyash is granulated, and life after granulation is realized
Clean applications of the incineration of refuse flyash living in bituminous paving.By being granulated to domestic garbage incineration flyash, and will be granulated
Fine and close domestic garbage incineration flyash particle is applied to road surface afterwards, makes heavy metal and its compound Leaching in fly ash granule
It is qualified, secondary pollution will not be caused to environment, realize the recycling clean utilization of domestic garbage incineration flyash.
The technical scheme that the present invention takes is as follows：
1st, a kind of domestic garbage incineration flyash prilling process, by domestic garbage incineration flyash：Cement：Silicon ash：Flyash
Mass ratio is 1：0.62：0.2：0.18 ratio weighs each raw material respectively, adds cement, silicon ash, flyash, house refuse successively
Flying ash, dry powder mixes after often adding a kind of powder；Then the water of total dry powder quality 20~30% is added, stirs, shake
Swing health 7 days after being molded；Finally crush and be granulated.
The domestic garbage incineration flyash is the flying dust after bioxin low temperature thermo-degradation.
Preferably, the domestic garbage incineration flyash particle diameter is less than 1mm.
Preferably, the domestic garbage incineration flyash particle diameter less than 0.075mm mass percentage content be more than 75%, and
Domestic garbage incineration flyash mass fraction in 0.058~0.075mm particle size ranges is more than 70%.
Preferably, the particle diameter of the granulation is 0~4.75mm.
Preferably, the health is carried out using the health-preserving condition and requirement of cement.
2nd, cleaning of the domestic garbage incineration flyash particle that domestic garbage incineration flyash prilling process obtains in road surface should
With.
Preferably, by mass percentage, domestic garbage incineration flyash particle the adding in asphalt mineral aggregate
Dosage is 2~8%；Domestic garbage incineration flyash particle substitutes part miberal powder or gathered materials and is added in asphalt, and pitch mixes
Close material and use SMA-13 types grading, SMA-16 types grading, AC-20C types grading, AC-25C types grading or ATB-25 type gradings.
Silicon ash of the present invention is the silicon ash of middle and high quality, and also referred to as SILICA FUME or cohesion silicon ash, English is
Microsilica or Silica fume, be ferroalloy in smelting duriron and industrial silicon (metallic silicon), produce in ore-smelting electric furnace
Bear the very strong SiO of a large amount of volatility2With Si gases, formed after gas discharge with air rapid oxidation condensation precipitation.
Flyash of the present invention is at least II levels ash, is the fine ash that catching is got off from the flue gas after coal combustion, fine coal
Ash is the primary solids waste of coal-burning power plant's discharge.The main oxides composition of power plants flyash is SiO2、Al2O3、
FeO、Fe2O3、CaO、TiO2Deng.
The beneficial effects of the present invention are：The present invention takes full advantage of domestic garbage incineration flyash, cement, silicon ash and powder
The gelling property of coal ash and particle diameter not of uniform size, by domestic garbage incineration flyash and cement, silicon ash and flyash by certain
Mass ratio, adding order are mixed, and obtain the powder mixture with thick grading, and be granulated jointly.This method obtains
The domestic garbage incineration flyash particle arrived is fine and close, and the contact area of domestic garbage incineration flyash and surrounding medium substantially reduces, and one
Aspect can alleviate its influence degree to Asphalt Mixture Performance, increase the domestic garbage incineration flyash in unit area
Application amount；On the other hand it can further slow down the leaching of the heavy metal and its compound in domestic garbage incineration flyash, improve
The effect of domestic garbage incineration flyash clean applications.Domestic garbage incineration flyash particle can replace miberal powder or gather materials to be directly added into
It is used to lay road surface in asphalt, can be used in sub-surface, asphalt surface course.Road surface is in application process, life
Heavy metal and its compound Leaching in incineration of refuse flyash is qualified, and secondary pollution will not be caused to environment, and lay
Road surface pavement performance indices are satisfied by code requirement.
In addition, domestic garbage incineration flyash, silicon ash and flyash are all industrial waste, flyash be the current discharge capacity in China compared with
One of big industrial residue, with the development of power industry, the flyash discharge capacity of coal-burning power plant increases year by year, substantial amounts of fine coal
Ash is untreated, will produce airborne dust, pollutes air；River can be caused to silt up if being discharged into water system, and poisonous chemical therein
Matter can also damage to human body and biology.Silicon ash be then ferroalloy in smelting duriron and industrial silicon (metallic silicon), ore deposit thermoelectricity
The very strong SiO of a large amount of volatility is produced in stove2With Si gases, formed after gas discharge with air rapid oxidation condensation precipitation.
Silicon ash is accessory substance during big industry is smelted, it is necessary to be reclaimed with dedusting environment friendly equipment.Therefore, this invention also solves above-mentioned
Life or the accumulation problem of industrial waste, effectively alleviate the pressure to caused by environment, realize the recycling of flying dust.
Embodiment
The preferred embodiments of the present invention are described in detail below.The experiment side of unreceipted actual conditions in embodiment
Method, generally according to normal condition or according to the condition proposed by manufacturer.
Domestic garbage incineration flyash used in the present invention derives from Chongqing garbage burning factory, for through grate furnace formula waste incineration
The domestic garbage incineration flyash that the sack cleaner of stove is collected, domestic garbage incineration flyash carry out bioxin low temperature thermal degradation first
Processing, the optimal processing parameter of low temperature thermal degradation are as follows：
Thermal degradation temperature：400 DEG C,
Flying dust discharge temperature：≤ 150 DEG C,
The solid phase residence time：1-2h,
Atmosphere：Nitrogen atmosphere, O2Volumetric concentration≤1%,
Dechlorination active medium：CaO, mass concentration >=10%.
Up to more than 95%, domestic garbage incineration flyash Zhong bioxin contains the degradation rate of bioxin Xia above-mentioned process conditions
Amount is reduced to below 10ng TEQ/kg；In addition, solvable salt content is 20~30% in domestic garbage incineration flyash, heavy metal contains
Amount is shown in Table 1.
Content of beary metal (butt, mg/kg) in the domestic garbage incineration flyash of table 1
| Element category | Content of beary metal |
| Be | Do not detect |
| V | 26.9 |
| Cr | 164.3 |
| Mn | 676.9 |
| Co | 13.3 |
| Ni | 28.5 |
| Cu | 578.0 |
| Zn | 5123.1 |
| As | 43.5 |
| Se | 2.3 |
| Cd | 139.4 |
| Sb | 46.3 |
| Ba | 1199.7 |
| Hg | 18.1 |
| Tl | 5.1 |
| Pb | 1854.7 |
| U | 6.8 |
| Th | 12.8 |
| Ag | 0.1 |
Domestic garbage incineration flyash leachate Leaching of Heavy Metals concentration is shown in Table 2.
The domestic garbage incineration flyash leachate Leaching of Heavy Metals concentration (hac buffer method, mg/L) of table 2
From content in table, in domestic garbage incineration flyash the higher heavy metal element of content include Zn, Pb, Ba, Mn,
Cu, Cr and Cd, in its hac buffer method leachate and Zn, Pb, Mn, Cu, Cd concentration it is higher, wherein Pb and Cd's is dense
Degree beyond《Household refuse landfill sites contamination control standard (GB16889-2008)》Specified in admission limit value.Now use this hair
Bright methods described carries out innoxious, recycling to the flying ash.
The domestic garbage incineration flyash for taking above-mentioned particle diameter to be less than 1mm, preferably domestic garbage incineration flyash particle diameter are less than
0.075mm degree is more than 75%, and the domestic garbage incineration flyash matter in 0.058~0.075mm particle size ranges
Measure fraction and be more than 70%, by domestic garbage incineration flyash：Cement：Silicon ash：The mass ratio of flyash is 1：0.62：0.2：0.18
Ratio weighs flying dust, cement, silicon ash and flyash respectively, adds cement, silicon ash, flyash, domestic garbage incineration flyash successively,
Dry powder mixing is required to after adding a kind of powder every time；Then the water of total dry powder quality 20~30% is added, stirs, vibrate
Health 7 days after shaping；Finally crush and be granulated.The particle diameter of the granulation can be 0~4.75mm, and the health is supported using cement
Carded sliver part and requirement are carried out.
The fine and close domestic garbage incineration flyash particle that above-mentioned granulation is obtained substitutes part miberal powder or gathered materials added to drip
In blue or green compound, by mass percentage, addition of the domestic garbage incineration flyash particle in asphalt mineral aggregate
For 2~8%.Asphalt can use SMA-13 types grading, SMA-16 types grading, AC-25C types grading, AC-20C type levels
Match somebody with somebody or ATB-25 type gradings.The asphalt for adding domestic garbage incineration flyash particle is used for the asphalt surface course for laying road surface
Or basic unit, water stability testing, high-temperature stability are examined, low-temperature cracking-resistance is examined and infiltration coefficient is examined and met
《Standard specification for construction and acceptance of highway asphalt pavement》The relevant regulations of (JTG F40-2004).
Acid organic pitch has high surface energy, big surface-active and strong cohesive force, the alkali with belonging to inorganic constituents
A series of physical chemisorption occurs for sexual life incineration of refuse flyash, and it is solid to reach cladding domestic garbage incineration flyash, stabilization
Change the purpose of heavy metal therein and its compound, realize de- " danger " application of domestic garbage incineration flyash.But recycling is sharp
During used in bituminous paving, the physicochemica components of domestic garbage incineration flyash have impact on the high-temperature stability of bituminous paving, low temperature
The pavement performance such as crack resistance and water resistant damage performance, wherein influence most to protrude is water stability.Therefore, implement in detail below
Water stabilizing result of the test is highlighted in example.
Embodiment
By taking AC-20C type gradings as an example, particle diameter ＜ 2.36mm domestic garbage incineration flyash particle is taken, substitutes part miberal powder
With part fine aggregate, using SBS modified pitch, coarse aggregate, fine aggregate and miberal powder with necessarily matching, mixed using hot asphalt
The mixing mixed and stirred technique and carry out compound of material is closed, obtains domestic garbage incineration flyash asphalt.Wherein substitute miberal powder
Domestic garbage incineration flyash particle, heating-up temperature, heat time, the same miberal powder of adding order, the house refuse for substituting fine aggregate are burnt
Burn fly ash granule, heating-up temperature, heat time, the same fine aggregate of adding order.When in domestic garbage incineration flyash asphalt
When mineral aggregate mass percent shared by domestic garbage incineration flyash particle is 2%, the result TSR (freeze-thaw splits of indirect tensile test on frozen-thaw
Intensity ratio) it is 84.5%, meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) Asphalt Mixture will reach
It is not less than 80% regulation to Ratio of split strength.
It should be noted that in granulation process of the present invention domestic garbage incineration flyash, cement, silicon ash, flyash dosage
Can suitably it adjust, it is still in protection domain of the present invention, and the domestic garbage incineration flyash particle after granulation exists
Addition in asphalt is also not limited only to 2%, can still be adjusted according to actual conditions.
It should be noted that the code requirement that the proportioning of each raw material of Asphalt Mixture of the present invention is matched somebody with somebody by corresponding stage adds
Add, prepare the data that the condition of asphalt does not provide and carried out by this area usual operating conditions, the noun in the present invention
Term is understood by this area conventional sense.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (4)
1. clean applications of the domestic garbage incineration flyash particle in road surface, it is characterised in that the road surface is bituminous paving；Institute
The prilling process for stating domestic garbage incineration flyash particle is：By domestic garbage incineration flyash：Cement：Silicon ash：The quality of flyash
Than for 1：0.62：0.2：0.18 ratio weighs each raw material respectively, adds cement, silicon ash, flyash, consumer waste incineration successively
Flying dust, dry powder mixes after often adding a kind of powder；Then the water of total dry powder quality 20 ~ 30% is added, stirs, vibrate shaping
Health 7 days afterwards, finally crush and be granulated；The domestic garbage incineration flyash particle diameter is less than 1mm；The domestic garbage incineration flyash grain
Mass percentage content of the footpath less than 0.075mm is more than 75%, and the house refuse in 0.058 ~ 0.075mm particle size ranges is burnt
Burn flying dust mass fraction and be more than 70%.
2. application according to claim 1, it is characterised in that the particle diameter of the granulation is 0 ~ 4.75mm.
3. application according to claim 1, it is characterised in that the health is entered using the health-preserving condition and requirement of cement
OK.
4. application according to claim 1, it is characterised in that by mass percentage, the domestic garbage incineration flyash
Addition of the particle in asphalt mineral aggregate is 2 ~ 8%；Domestic garbage incineration flyash particle, which substitutes part miberal powder or gathered materials, to be added
Enter into asphalt, asphalt is using SMA-13 types grading, SMA-16 types grading, AC-20C types grading, AC-25C
Type grading or ATB-25 type gradings.
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| CN201610136998.7A CN105693123B (en) | 2016-03-10 | 2016-03-10 | The method and its clean applications in bituminous paving that domestic garbage incineration flyash is granulated altogether with cement, silicon ash, flyash |
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| CN201610136998.7A CN105693123B (en) | 2016-03-10 | 2016-03-10 | The method and its clean applications in bituminous paving that domestic garbage incineration flyash is granulated altogether with cement, silicon ash, flyash |
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| CN105693123B true CN105693123B (en) | 2018-04-10 |
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| TWI655171B (en) * | 2017-09-05 | 2019-04-01 | 蘇鈺荃 | Method for manufacturing briquettes by applying mswi fly ash |
| CN109336481A (en) * | 2018-11-01 | 2019-02-15 | 淮阴工学院 | Using domestic refuse incineration ash as concrete of admixture and preparation method thereof |
| CN110171934B (en) * | 2019-05-17 | 2021-12-24 | 南京晓庄学院 | Collaborative regeneration treatment method for waste incineration fly ash and construction waste |
| CN113501690A (en) * | 2021-06-23 | 2021-10-15 | 中国矿业大学 | Granulation, solidification and desalination method for waste incineration fly ash |
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| CN100336758C (en) * | 2003-11-06 | 2007-09-12 | 同济大学 | Method for preparing ecological concrete using burning fly ash as admixture |
| CN101357840B (en) * | 2007-08-03 | 2012-01-04 | 天津壹生环保科技有限公司 | Baking-free type refuse burning flyash haydite and manufacturing method thereof |
| CN101397198A (en) * | 2008-10-30 | 2009-04-01 | 上海大学 | Composite blending material for concrete and preparation method thereof |
| CN101531492B (en) * | 2009-04-17 | 2012-01-04 | 上海应用技术学院 | Method for preparing light concrete by municipal solid waste incineration fly ash |
| CN102173721B (en) * | 2011-01-25 | 2012-11-21 | 浙江大学宁波理工学院 | Refuse burning fly ash solidification agent and solidification method of refuse burning fly ash |
| CN104607434B (en) * | 2015-02-10 | 2016-04-27 | 重庆大学 | One way of life incineration of refuse flyash curing |
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Address after: 400084 Jianqiao Avenue, Area A, Jianqiao Industrial Park, Dadukou District, Chongqing Co-patentee after: China Merchants Chongqing Communications Research & Design Institute Co., Ltd. Patentee after: Chongqing Sanfeng Environment Group Co., Ltd. Co-patentee after: Chinese Research Academy of Environmental Sciences Co-patentee after: Chongqing Yuqian Expressway Co., Ltd. Address before: 400084 Jianqiao Avenue, Area A, Jianqiao Industrial Park, Dadukou District, Chongqing Co-patentee before: China Merchants Chongqing Communications Research & Design Institute Co., Ltd. Patentee before: Chongqing Sanfeng Environmental Industry Group Co.,Ltd. Co-patentee before: Chinese Research Academy of Environmental Sciences Co-patentee before: CHONGQING ZHONGXIN YUQIAN EXPRESSWAY CO., LTD. |