CN1124204C - Lining material for garbage burying field - Google Patents
Lining material for garbage burying field Download PDFInfo
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- CN1124204C CN1124204C CN 01110321 CN01110321A CN1124204C CN 1124204 C CN1124204 C CN 1124204C CN 01110321 CN01110321 CN 01110321 CN 01110321 A CN01110321 A CN 01110321A CN 1124204 C CN1124204 C CN 1124204C
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Abstract
The present invention relates to a lining material for garbage landfills. The present invention is characterized in that organic bentonite, metallic bentonite and natural bentonite are mixed to form laminated laying material. The present invention has strong adsorption capacity for typical organic pollutants in garbage percolation, such as oxybenzene, aniline, benzene series, halogenated hydrocarbon, etc., can completely prevent the organic pollutants in landfill leachate from leaking, and can avoid the pollution of the organic pollutants to ground water; thereby, the present invention has important environmental benefit and social benefit.
Description
Technical field
The invention belongs to the clay material that is used to produce layered article, a kind of modified alta-mud material that is used for refuse landfill lining and wall body structure of more specifically saying so.
Background technology
In recent years along with the high concentration of population and developing rapidly of urbanization, the rubbish of countries in the world just increases with the average speed faster than three times of its economic growth rates, the huge rubbish of quantity is more and more seriously affecting human existence, makes the handling problems of municipal refuse become and becomes increasingly conspicuous.Nowadays be the serious threat that developed country or developing country all are faced with natural resource rubbishization and refuse harmization inevitably.The accident of place where the garage is piled up polluted drinking water all once took place both at home and abroad.The Urban Rubbish Disposal method is generally sanitary landfills, air storage, burning, pyrolysis, biodegradation, compost and throwing sea etc. at present.Developed country is based on sanitary landfills and burning, especially sanitary landfill method has that cost is lower, treating capacity is big, ultimateization disposal degree advantages of higher, become one of main method of external Urban Rubbish Disposal, China had formally proposed recent treatment of urban garbage technical policy already, sanitary landfill method becomes the one preferred technique of refuse disposal, estimate 21 century China big and medium-sized cities all can have refuse landfill.
Percolate from garbage filling field is one of surface water and underground water organic pollution main source.Mainly from the decomposition of organic substance in the household garbage, next derives from industry or TRADE REFUSE to organic pollution in the percolate.Absorption reaches capacity and organic matter when having little time to degrade to majority of organic pollutants when the underground argillic horizon of landfill yard, and these pollutants will polluted underground water.The percolate that comes out through the drainage of refuse landfill mozzle often just directly is discharged into river, reservoir without harmless treatment, what have is used for field irrigation, severe contamination crops and aquatile, and health is produced harm by food chain and ecological environment.Become domestic and international important research project at this effective treating method of exploring organic pollution in the percolate.
The major function of refuse landfill engineering is the sealing refuse, reaches and avoids the effect of refuse to the pollution of atmospheric environment, ecological environment, water environment and people's living environment.Although different landfill technical specifications has been formulated according to economy and development in science and technology level in country variant and area, all has similar structure.Usually can not satisfy under the situation of antiseepage requirement in natural geotechnical body, need with periphery the antiseepage lining be set in the landfill yard bottom, with good conditionsi also banking up on bottom liner drained layer and peace is buried leachate collection system, key technology wherein is addressing and sealing, and on the theory, utilization contains the soft formation of some natural clay minerals as the garbage loading embeading lining, can effectively stoping outside the venue, water body permeates in the field, can prevent that again the internal contamination thing from outwards revealing, if when meeting crustal movement and causing place distortion even fracture, plastic strain can take place and not cause fracture in these soft formations, and can cram the crack fast.But pass by in fact to have found that in some refuse landfill that utilizes natural soft formation to build an interior organic pollutant has the generation of exosmose that organic composition is too much in close relations in this and the domestic waste.Because inorganic clay mineral soft formation has the hydrophily of splitting by force, can not effectively adsorb hydrophobic organic pollution, so do not reach the purpose that stops organic pollutant migration, the organic pollutant seepage of control.
China's domestic waste is based on food garbage and lime-ash rubbish, be much higher than content of organics in developed country's domestic waste, add the organic pollution of industrial discharge, cause China's city garbage percolate chemical composition very complicated, except that inorganic nature three nitride and heavy metal contaminants, mainly contain a large amount of organic pollutions, comprise that low molecular aliphatic acid, corruption plant matter class and high molecular sallow acid etc., can detect organic pollution and reach 77 kinds, be a kind of high concentration, the strong comprehensive organic sewage that pollutes, forms complexity.It is very outstanding and urgent to make in China's city garbage percolate organic contact scar thing prevent and treat problem.
Summary of the invention
The objective of the invention is to overcome the shortcoming of existing natural clay as refuse landfill lining and wall construction material, provide a kind of organic pollution diffusion mobility in soil environment that limits, to stop the refuse landfill lining new material that underground water is further polluted.
Realize main technical schemes of the present invention: organobentonite, metal swell soil and traditional natural clay are mixed use.
Material of the present invention specifically constitutes: be followed successively by in metal swell soil, the natural swelling from inside to outside, organobentonite, natural montmorillonite, its every layer thickness is than being the metal bentonite bed: natural montmorillonite layer: organobentonite layer: natural montmorillonite layer=1-2: 3-4: 1-2: 3-4 or will be in organic swelling and two-layer natural montmorillonite mix and form one deck mixed layer.
Concrete application process of the present invention, with stratified material of the present invention lower floor is that natural montmorillonite layer or organobentonite are connected with the natural soil layer and compacting with the natural montmorillonite mixed layer, constitute landfill yard lining work layer, make the minimum 1t/m of being of compacted density of landfill yard work layer
3, compactness is 97%, transmission coefficient is less than 1 * 10
-9M/S, air transmission coefficient is less than 1 * 10
-7M/S, the lining stratified material layer of described work layer and natural soil layer thickness height ratio are 1: 1, described natural soil is meant the soil at refuse landfill scene.
Organobentonite of the present invention is with quaternary ammonium salt modified dose natural montmorillonite to be carried out organic modification (Chen Jimei, 1994, the synthetic and characteristic research of bentonite, GEOLAB, the 10th volume, 4-5 phase, 292-297 page or leaf) according to a conventional method.
The bentonitic preparation of metal of the present invention: be rich in Na
+, Ca
2+, Cu
2+, Al
3+And Cr
3+The chloride solution preparation of swell soil by the various metals of absorption, unnecessary Cl
-Wash off with deionized water, the swell soil drying that contains each metal ion species that will obtain then, pulverize the back and cross 100 mesh sieves, utilize natural montmorillonite to handle various heavy metal wastewater therebies, also can obtain corresponding metal swell soil (He Hongping, Guo Jiugao, Xie Xiande, Peng Jinlian, 1999 after the saturated absorption, clay minerals such as montmorillonite are to heavy metal ion adsorbed selectivity experimental study, the mineral journal, the 19th volume, 231-235 page or leaf).
Advantage of the present invention:
Therefore material of the present invention, can effectively stop or be fixed with organic pollutants owing to have organobentonite and metal swell soil at lining, the diffusion mobility in soil environment of restriction organic pollution.The transfer ability of organic pollution in soil and even underground water depends on the degree of absorption of soil to pollutant.In refuse landfill lining and body of wall impervious material, add a spot of organic clay, will increase impervious material, obviously delay the speed that organic pollution penetrates impervious material the organic pollutant adsorption ability.Because in refuse landfill near the impervious barrier, percolate and inorganic clay mineral and organically microorganism and biological energy source are formed one than intact ecocystem, some organic contact scar things can become the carbon source of growth of microorganism again, so microorganism can also be degraded by the adsorbed organic pollutant of organic clay in the impervious barrier.Mix as the clay mineral that flows and to use, solve the optimal selection of household garbage sanitary filling field lining and body of wall antiseepage leakproof especially organic clay and traditional stoped water.
Natural clay mineral exists a large amount of tradable hydrophilic inorganic cations, make the natural clay mineral surface that the very thin moisture film of one deck be arranged usually, thereby can not adsorb hydrophobic organic pollutant effectively when with quaternary ammonium salt cationic modified natural clay mineral, after making organic clay, organic cations nitrogen-atoms end is adsorbed on the electronegative surface of clay by exchange, alkyl chain is crowded together the formation organic facies mutually, can improve the hydrophobicity of surface of clay, thereby effectively adsorb hydrophobic organic pollutant.
Because the organic cations aquation is significantly less than inorganic cation, does not have moisture film to be present in the organic clay surface usually, can improve the ability of removing the middle organic pollution that anhydrates greatly, stop the migration of organic pollution in environment effectively.
The organic clay interlamination region has formed hydrophobic phase (organic facies) because a large amount of organic cations exists, and this hydrophobic can become organic distribution phase of organic pollution mutually, and promptly organic pollution distributes at water and organic facies.Mainly in organic cation and surface of clay dissolving, after organic matter solubility increased, the organic cation chain broke away from the surface to organic pollution, formed organic facies.When the organic pollution of absorption was more and more, the dissolving power of organic facies can increase, thereby produced solvation effect.Solvation effect and partition effect acting in conjunction can improve organic adsorption capacity;
The metal swell soil that material of the present invention uses is to use Na
+, Cu
2+, Al
3+And Cr
3+Saturated swell soil carries out metalized modified to it, can improve it to the organic matter adsorption capacity, and can utilize natural montmorillonite to be used for industrial heavy metal containing wastewater treatment as adsorbent, the swell soil that will adsorb poisonous high valent cationic then, be used for organic absorption, can the treatment of wastes with processes of wastes against one another, solved the problem that swell soil is in the past recycled, have good economic benefit and social benefit.
In a word, make lining material owing to adopt organobentonite and metal swell soil, organic pollution in the percolate there is strong adsorption capacity, add lining and have enough thickness and degree of compaction, can prevent the seepage of organic pollution fully, stop organic pollution to phreatic pollution, so the present invention have important environmental benefit and social effect.
Description of drawings
Fig. 1 is a refuse landfill work layer sectional schematic diagram.
By shown in Figure 1, the refuse landfill work layer is to be made of lining stratified material of the present invention and 4 on natural soil layer, lining stratified material of the present invention from top to bottom is followed successively by: with the rubbish contact layer be that metal bentonite bed 1, natural montmorillonite layer 2-1, organobentonite layer 3, natural montmorillonite layer 2-2 consist of, wherein natural montmorillonite layer 2-2 is connected with the natural soil layer. Can build the refuse landfill of difformity and size by the above-mentioned material structure.
The specific embodiment
Further specify characteristics of the present invention below by instantiation.
Example 1
This example is the preparation organobentonite.
The natural montmorillonite of experiment usefulness is the natural calcium base bentonite in Xuanhua, Hebei, essential mineral composition: swell soil 87.4%, quartz 3.6%, α-Fang Shiying 7.3%, potassic feldspar 0.7%, other 1.0%, cation exchange capacity is a 83.87mlg/100g soil, its chemical analysis sees Table 1; Used modifier is chemical pure cetrimonium bronmide (CTMAB).
The preparation method:
Place wide-mouth bottle standby with crossing 100 mesh sieves after the former state drying.Take by weighing the 40g former state during each the experiment, pour in the certain density CTMAB solution of 200ml, put into constant temperature oscillator constant temperature vibration 2.5h after shaking up, 50 ℃ of temperature, vibration velocity 170rmin
-1Take out the back filtering and washing to there not being bromide ion, oven dry about 90 ℃ is ground the back and is crossed 100 sieves.
Modified alta-mud has X ray to the results are shown in table 2.As shown in Table 2, with the increase of modifier consumption, organobentonite d
001Value increases.
Former state and bentonite differential thermal analysis curve show, former state loses intermediary water about 172 ℃, lose constitution water at 695 ℃ and 889 ℃, modified alta-mud loses intermediary water about 121 ℃, 455 ℃ of strong exothermic peaks that have an organic matter to decompose, at 320 ℃ and 733 ℃ a weak exothermic peak is arranged respectively, and lose two heat absorption paddy of constitution water in the former state, one is capped, one become very a little less than.
Compare with former state, increased 2921cm on the bentonite infrared spectrum spectrogram
-1And 2851cm
-1The characteristic absorption peak of two alkane c h bonds stretching vibration.
These prove that all modifier successfully enters bentonitic interlayer.
Example 2
This example is a preparation metal swell soil.
Through Na
+, Ca
2+, Cu
2+And Cr
3+Saturated swell soil (raw material is with example 1) carries out X-ray analysis, its bottom reflection d
001The value of veil spacing is as shown in table 3, and promptly the ascending order of these several bentonitic interlamellar spacings is Na
+＜Ca
2+＜Cu
2+Al
3+＜Cr
3+The interlamellar spacing that swell soil is bigger helps organic molecule and enters between bentonite bed.
To containing Na
+, Ca
2+, Cu
2+Al
3+And Cr
3+The swell soil chemical analysis, its CaO that contains respectively, Na
2O, CuO, Al
2O
3, Cr
2O
3See Table 4 with the quality percentage composition of adsorbed water.As shown in Table 4, around more hydrone, these hydrones can form hydrogen bond with the hydroxyl organic molecule around the cation of high valence state, thus adsorbable more substantial organic matter.
Example 3
This example is the adsorption experiment of organobentonite Pyrogentisinic Acid, aniline and benzene series row, chloroform.
1. organobentonite adsorbing phenol experiment
Experiment condition: selecting initial phenol concentration for use is 10mg/1, and bentonite consumption 2.5g carries out adsorption experiment, and experimentation is behind constant temperature vibration 10min under the vibration velocity of room temperature 150r/min, centrifugal, cross film, measure residual concentration with the uv-spectrophotometric instrument.Down together.The results are shown in Table 5, shown by table 5, increase with the modifier consumption, organobentonite Pyrogentisinic Acid adsorption capacity strengthens.
2. organobentonite adsorption of aniline experiment
Experiment condition: organobentonite consumption 2.0g, liquor capacity 25ml, aniline initial concentration 20mg/l, the pH value is neutral, and the clearance of aniline is reached 90%, and equilibrium concentration reaches the national industrial wastewater second pollutant secondary discharge standard.Result such as table 6.
Organobentonite absorption comprise benzene, toluene, ethylbenzene, neighbour,, dimethylbenzene, isopropylbenzene and the benzene second of the contraposition benzene series row in tying up to, in percolate, contain multiple benzene series matter, polycyclic aromatic hydrocarbon and halogenated hydrocarbons, wherein, can reach 31.2mg/l with the xylene content maximum.
Experiment condition: the initial concentration of benzene,toluene,xylene is respectively 22.585mg/l, 24/086mg/l, 18.330mg/l, and sample dosage is all selected 1.0g for use.Liquor capacity 25ml, pH value are closely neutral, and oscillating reactions time 30min gets supernatant after leaving standstill, with gas chromatograph for determination raffinate degree.Down together.Result of the test is seen Fig. 2.As shown in Figure 2, under the same sample consumption, along with the increase of modifier consumption, benzene series thing clearance obviously increases, and special paraxylene has good adsorption effect.And natural montmorillonite does not almost have adsorption capacity to the benzene series thing.
4. organobentonite absorption chloroform experiment
Experiment condition: the chloroform initial concentration is 10.84mg/l, and sample dosage is 2.0g.Result of the test: near 50%, and natural montmorillonite is 3.14% to the clearance of chloroform to organobentonite to the chloroform clearance.
Example 4
This example is metal swell soil adsorbing phenol and reduces chemical oxygen consumption (COC) (COD) experiment.
1. adsorbing phenol experiment
Add 0.1g respectively through Na
+, Ca
2+, Cu
2+, Al
3+, Cr
3+Saturated liquor capacity 20ml, concentration is respectively 10mg/l and 20mg/l, and behind the oscillating reactions 30min, centrifugal taking-up supernatant liquor is measured phenol concentration in the filtrate with ultraviolet specrophotometer.Experimental result sees Table 7.
As can be seen from Table 7, under various initial phenol concentration conditions, the amount of adsorbing phenol all increases according to following order: Na
+＜Ca
2+＜Cu
2+Al
3＜Cr
3+Swell soil, the swell soil that promptly contains high-valence cationic will be higher than for the adsorbance of phenol and contain the adsorbance of cationic bentonite at a low price.
2. reduce chemical oxygen consumption (COC) (COD) experiment
Experiment condition: the initial concentration of phenol and dimethylbenzene is 10mg/l, the COD initial value is 160.8mg/l.Experimental technique is the dimethylbenzene gas chromatograph for determination with above-mentioned adsorbing phenol experiment condition, and COD measures with potassium dichromate method.Organic absorption result sees Table 8 in dissimilar metal swell soil Pyrogentisinic Acid, dimethylbenzene and the percolate.
As can be seen from Table 8, the adsorption rate of 4 kinds of swell soil Pyrogentisinic Acids and COD all increases according to following order: Na
+＜Ca
2+＜Cu
2+Al
3+＜Cr
3+Swell soil, the swell soil that promptly contains high-valence cationic are higher than for the adsorbance of phenol and COD and contain the adsorbance of cationic bentonite at a low price, and Al
3+, Cr
3+Swell soil Pyrogentisinic Acid's adsorption capacity will be much larger than Na
+, Ca
2+Swell soil.Under experiment condition, be rich in Cr
3+Montmorillonite Pyrogentisinic Acid's adsorption rate reaches 67.5%, reaches 60.3% for the adsorption rate of COD.And the adsorbance of various swell soil paraxylene is all less relatively.
Example 5
This example is to organobentonite and the bentonitic concrete application of metal.
Press Fig. 1 structure building refuse landfill work layer: 1 meter on natural soils layer; 1 meter of the stratified material bed thickness of lining of the present invention, wherein 0.2 meter on metal swelling stratum is thick, 0.2 meter on organobentonite layer is thick, the layer of natural montmorillonite up and down of organobentonite layer be 0.3 meter thick, then the compacting so that real density and compactness reach the requirement of regulation.
The chemical composition of table 1 natural montmorillonite (wt%)
| SiO 2 | Al 2O 3 | Fe 2O 3 | FeO | MgO | CaO | Na 2O | K 2O | H 2O + | H 2O - | TiO 2 | P 2O 5 | MnO |
| 63.25 | 14.35 | 0.96 | 0.12 | 4.90 | 1.62 | 0.09 | 1.12 | 8.32 | 4.94 | 0.16 | 0.03 | 0.03 |
Table 2 organobentonite d
001Value
| Modifier (%) | 0.0 | 1.5 | 3.0 | 4.5 | 6.0 | 7.5 |
| d 001Value (nm) | 1.533 | 1.474 | 1.626 | 2.354 | 2.311 | 2.412 |
Table 3 metal swell soil d
001Value
CaO, Na in the various swell soils of table 4
2O, CuO, Al
2O
3, Cr
2O
3Quality percentage composition (%) with adsorbed water
| Type | Na + | Ca 2+ | Cu 2+ | Al 3+ | Cr 3+ |
| d 001Value (nm) | 1.307 | 1.502 | 1.533 | 1.560 | 1.660 |
| The swell soil type | Na +-Mt | Ca 2+-Mt | Cu 2+-Mt | Al 3+-Mt | Cr 3+-Mt |
| Na 2O | 3.87 | O.30 | 0.21 | 0.24 | 0.26 |
| CaO | 0.54 | 1.43 | 0.42 | 0.37 | 0.31 |
| CuO | 0 | 0 | 3.18 | 0 | 0 |
| Al 2O 3 | 13.89 | 13.85 | 13.56 | 17.09 | 13.29 |
| Cr 2O 3 | 0 | 0 | 0 | 0 | 2.83 |
| H 2O | 7.23 | 7.80 | 9.16 | 10.89 | 11.54 |
Several modified alta-mud Pyrogentisinic Acid of table 5 adsorption effect
| Modifier (%) | 0.0 | 1.5 | 3.0 | 4.5 | 6.0 | 7.5 |
| Phenol (mg/l) | 8.20 | 3.77 | 2.20 | 1.48 | 1.47 | 0.50 |
| Adsorption rate (%) | 18.0 | 62.3 | 78.0 | 85.2 | 85.3 | 95.0 |
Several modified alta-muds of table 6 are to the aniline adsorption effect
| Modifier (%) | 0.0 | 1.5 | 3.0 | 4.5 | 6.0 | 7.5 | 2% acid activation |
| Aniline (mg/l) | 7.18 | 3.13 | 2.40 | 2.18 | 1.55 | 0.00 | |
| Adsorption rate (%) | 64.1 | 84.4 | 88.0 | 89.1 | 92.3 | 100.0 |
The absorption of the swell soil Pyrogentisinic Acid solution that table 7 is dissimilar
| The swell soil type | Initial concentration (mg/l) | Adsorption concentration (mg/l) | Clearance (%) | Initial concentration (mg/l) | Adsorption concentration (mg/l) | Clearance (%) |
| Na + | 10 | 9.4 | 6.0 | 20 | 19.4 | 3.0 |
| Ca 2+ | 10 | 9.1 | 9.0 | 20 | 18.6 | 7.0 |
| Cu 2+ | 10 | 8.9 | 11.0 | 20 | 18.4 | 8.0 |
| Al 3+ | 10 | 6.0 | 40.5 | 20 | 15.0 | 25.0 |
| Cr 3+ | 10 | 3.7 | 67.5 | 20 | 12.6 | 37.0 |
The dissimilar swell soil of table 8 is to each type organic adsorption rate
| The swell soil type | Na +-Mt | Ca 2+-Mt | Al 3+-Mt | Cr 3+-Mt |
| Phenol | 6.0％ | 9.0％ | 40.5％ | 67.5％ |
| Dimethylbenzene | 17.2％ | 14.0％ | 22.1％ | 5.5％ |
| Chemical oxygen consumption (COC) | 34.1％ | 48.0％ | 59.6％ | 60.3％ |
Claims (3)
1. one kind is used for the refuse landfill lining material, it is characterized in that organobentonite, metal swell soil and natural montmorillonite constitute the stratiform carpet structure, concrete constitute: be followed successively by metal swell soil, natural montmorillonite, organobentonite, natural montmorillonite, its every layer thickness ratio is: 1-2: 3-4: 1-2: 3-4 or metal swell soil be mixed into one deck mixed layer by organobentonite and two-layer natural montmorillonite material and form two-layer carpet structure.
2. according to the described material of claim 1, obtain the corresponding metal swell soil after it is characterized in that the metal swell soil that described metal swell soil obtains with chloride treatment or utilizing natural montmorillonite to handle the saturated absorption of various heavy metal wastewater therebies.
3. the described material application process of claim 1, it is characterized in that the metal bentonite bed of stratified material is contacted with rubbish, the mixed layer of natural montmorillonite layer or organobentonite and natural montmorillonite is connected with the natural soil layer and compacting, constitute the refuse landfill work layer, its compacted density is minimum to be 1t/m
8, compactness is 97%, transmission coefficient is less than 1 * 10
-9M/S, the lining air transmission coefficient is less than 1 * 10
-7M/S, the stratified material matting layer of the lining of described work layer is 1: 1 with the ratio of natural soil layer thickness.
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|---|---|---|---|
| CN 01110321 CN1124204C (en) | 2001-04-03 | 2001-04-03 | Lining material for garbage burying field |
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|---|---|---|---|
| CN 01110321 CN1124204C (en) | 2001-04-03 | 2001-04-03 | Lining material for garbage burying field |
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| CN1124204C true CN1124204C (en) | 2003-10-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455730C (en) * | 2002-09-30 | 2009-01-28 | 阿奎坦有限公司 | Geotechnical barrier |
| CN1323941C (en) * | 2005-07-23 | 2007-07-04 | 桂林矿产地质研究院 | Modified bentonite used for treating garbage percolate and its manufacturing method |
| CN100366568C (en) * | 2006-01-04 | 2008-02-06 | 湖南大学 | Process for mfg., impervious lining of refuse health filling field by urban sewage mud |
| US9943079B2 (en) | 2007-10-30 | 2018-04-17 | Imerys Filtration Minerals, Inc. | Modified mineral-based fillers |
| CN101725159B (en) * | 2009-12-03 | 2013-10-16 | 北京亿路特通新材料有限责任公司 | Method for building impervious liner of refuse landfill by utilizing earthiness firming agent |
| CN101936013B (en) * | 2010-09-07 | 2012-04-18 | 中国市政工程西北设计研究院有限公司 | Base rock side slope middle seepage preventing layer anchoring structure of steep and hard rock double-layer seepage preventing structure |
| CN103960284B (en) * | 2014-05-09 | 2016-02-24 | 尹无忌 | One way of life rubbish deodorizing disinfectant |
| CN104074206B (en) * | 2014-06-24 | 2016-06-08 | 天津中联格林科技发展有限公司 | A kind of geotechnique's pad for preventing heavy metal pollution and its preparation method |
| CN106033044A (en) * | 2015-03-11 | 2016-10-19 | 中国人民解放军沈阳军区司令部工程科研设计所 | A pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program |
| CN105728424B (en) * | 2015-11-26 | 2018-11-27 | 张强 | The ring landfill yard that solid waste solidifies storage is built a dam construction device and its method |
| CN106395966B (en) * | 2016-10-21 | 2018-04-20 | 浙江大学 | A kind of method of organic pollution in efficiently retardance migration and ira situ degradation percolate |
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