CN101119812B - Method of purifying polluted soil - Google Patents
Method of purifying polluted soil Download PDFInfo
- Publication number
- CN101119812B CN101119812B CN2006800047389A CN200680004738A CN101119812B CN 101119812 B CN101119812 B CN 101119812B CN 2006800047389 A CN2006800047389 A CN 2006800047389A CN 200680004738 A CN200680004738 A CN 200680004738A CN 101119812 B CN101119812 B CN 101119812B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- contaminated soil
- soil
- throughput
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002689 soil Substances 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000000746 purification Methods 0.000 claims abstract description 33
- 238000000855 fermentation Methods 0.000 claims abstract description 22
- 230000004151 fermentation Effects 0.000 claims abstract description 22
- 230000004913 activation Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 9
- 235000015099 wheat brans Nutrition 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 4
- 240000007594 Oryza sativa Species 0.000 abstract description 2
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 2
- 235000009566 rice Nutrition 0.000 abstract description 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract 4
- 230000003213 activating effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 22
- 238000009423 ventilation Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 17
- 238000007792 addition Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 8
- 230000000593 degrading effect Effects 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 235000013339 cereals Nutrition 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 108010068370 Glutens Proteins 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000000769 gas chromatography-flame ionisation detection Methods 0.000 description 2
- 239000002035 hexane extract Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000186046 Actinomyces Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 235000021312 gluten Nutrition 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 229960002415 trichloroethylene Drugs 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
It is intended to provide a purification method whereby the efficiency of the purification of polluted soil can be sufficiently elevated by controlling the temperature of the polluted soil even at a low temperature and promoting the activation of an aerobic microorganism capable of decomposing an organic pollutant. Namely, a method of purifying polluted soil which comprises supplying air through soil having been polluted with an organic pollutant, thus activating an aerobic microorganism capable of decomposing the organic pollutant, and decomposing the organic pollutant via fermentation to thereby purify the polluted soil, wherein a fermentation aid containing a rice bran paste is added to the polluted soil and the air supply rate is controlled so as to maintain the temperature of the polluted soil to 10 to 50<SUP>o</SUP>C.
Description
Technical field
The present invention relates to make aerobe activation, thereby the purification method with the contaminated soil of contaminated soil purification is decomposed in the organic pollution materials fermentation with organic pollution materials decomposability through to the contaminated soil ventilation of being polluted by organic pollution materials.
Background technology
In recent years; Purification method as the contaminated soil that is polluted by organic pollution materials; Have through ventilating to the contaminated soil that is polluted by organic pollution materials; Make aerobe activation, make organic pollution materials fermentation decomposition carry out the ventilation type biological restoration method of contaminated soil purification (for example, opening flat 7-100459 communique) referring to the spy with organic pollution materials decomposability.
When adopting the purification method of this contaminated soil, in the winter time or during low temperature such as cold district, because air that will be cold feeds contaminated soil, so the reduction of the temperature of contaminated soil, can not make the abundant activation of aerobe.Its as a result the purification efficiency of contaminated soil significantly descend.
Therefore; So far in the winter time or also make the aerobe activation during low temperature such as cold district; The purification method that the contaminated soil that has utilized artificial fertile soil and carbohydrate arranged (for example; Open the 2002-1303 communique referring to the spy), utilized the purification method (for example, opening the 2004-254508 communique) of the contaminated soil of distillers' grains classes referring to the spy.
Summary of the invention
In order fully to improve the purification efficiency of contaminated soil, need contaminated soil be controlled at the active temperature band of aerobe that promotes to have the organic pollution materials decomposability.But when adopting existing method, the temperature of the contaminated soil in the time of can not fully making low temperature rises, and has the inadequate problem of aerobe activation.In addition, when the temperature of contaminated soil rose excessively, the flora of activation was different in soil, so the problem that existence can not make purification efficiency fully improve.
Therefore,, promote aerobe activation, fully improve the purification method of contaminated soil purification efficiency with organic pollution materials decomposability even the object of the present invention is to provide a kind of temperature that when low temperature, also can control contaminated soil.
In order to solve above-mentioned problem; The present invention relates to a kind of through ventilating to the contaminated soil that is polluted by organic pollution materials; Make aerobe activation with above-mentioned organic pollution materials decomposability; Thereby the purification method with the contaminated soil that above-mentioned contaminated soil is purified is decomposed in above-mentioned organic pollution materials fermentation is characterized in that: add the fermentation auxiliary material that contain the distillers' grains class to above-mentioned contaminated soil, the control throughput is so that the temperature of this contaminated soil reaches 10～50 ℃.
In addition, the invention is characterized in that the quality of adding with respect to above-mentioned contaminated soil is the above-mentioned fermentation auxiliary material of 0.2～5 quality %.
In addition, the invention is characterized in: through carrying out the control of above-mentioned throughput with the combination of supplying gas with air-breathing.
In addition, the invention is characterized in: in the control of above-mentioned throughput, temporarily stop ventilation.
In addition, the invention is characterized in: after the easy decomposability composition decomposition with above-mentioned organic pollution materials, reduce above-mentioned throughput.
< with the cross reference of pertinent literature >
The application serves as for 2005-54140 number that priority is advocated on the basis with the special hope of the Japan of application on February 28th, 2005, and quotes its content.
Description of drawings
Fig. 1 is that expression is added 2 quality %HC to above-mentioned soil, the curve map that adopts the soil moisture in the purification method of biological heap type (バ イ オ パ イ Le type) ventilation to change.
Fig. 2 contaminated soil that to be expression pollute with the oil content (n-hexane extract) that is used as polluter is as object, the contaminated soil purification efficiency examination result's in the attraction type ventilating mode curve map.
Fig. 3 is the curve map of temperature and soil moisture relation under the different HC additions of expression.
Fig. 4 is that expression is to the HC addition of contaminated soil and the curve map of throughput relation.
Fig. 5 is that expression will be air-breathing and the curve map of the result of the test when making up of supplying gas.
Fig. 6 is the curve map of the result of the test when representing temporarily to stop to ventilate.
To be expression decompose the curve map of the result of the test of back when reducing throughput with the easy decomposability composition of organic pollution materials to Fig. 7, (a) in the expression soil temperature through the time change, (b) the expression oil content through the time change.
The specific embodiment
Below, with reference to accompanying drawing the preferred plan that is used for embodiment of the present invention is described.
At first; The purification method of the contaminated soil in the embodiment of the present invention; Be through to the contaminated soil that is polluted by organic pollution materials (below also abbreviate " soil " as) ventilation; Make optionally activation of aerobe with organic pollution materials decomposability; Thereby with the purification method that the contaminated soil of purifying contaminated soil is decomposed in the polluter fermentation, the formation of this method is: add the fermentation auxiliary material that contain the distillers' grains class to contaminated soil, the control throughput is so that the temperature of contaminated soil reaches 10～50 ℃.
Also have; The present invention is as the organic pollution materials that purifies object; For example, can enumerate gasoline, kerosene, light oil, heavy oil, machinery oil, lubricating oil, the former wet goods oil content from oil, tar or benzene etc. are from the oil content of coal; Organochlorine such as trichloro-ethylene or tetrachloro-ethylene compounds, the benzene that contains in the above-mentioned oil content, toluene, ethylbenzene, xylenes etc.
In addition; As the aerobe in the above-mentioned formation, can enumerate general viable bacteria, der Pilz, actinomyces, oil with voltinism bacterium etc., but be not limited to these microorganisms among the present invention; As long as have the performance that the organic pollution materials fermentation is decomposed, also can be other aerobes.In addition, if consider to purify the utilization again of soil, can adopt the method that makes the aerobe activation that contains in the contaminated soil, but be not limited to this.
Secondly, to effect of the present invention, i.e. the raising effect of the purification efficiency of the suitable temperature control of contaminated soil generation and soil improve effect to be explained respectively.
Fermentation auxiliary material among the present invention as principal component, as the distillers' grains class, are to be selected from wheat bran, last powder, rice bran, corn bran and glutelin class (gluten field) at least a kind with the distillers' grains class.In addition, these auxiliary material that ferment for example, both can all be made up of the distillers' grains class, also can go back mineral such as mineral substance, perlite, zeolite, diatomite such as proper fit pH buffer, humic acids, calcium or magnesium, other soil improvement materials as required.As fermentation auxiliary material of the present invention, for example, can enumerate with the ヒ one ト コ Application Port (trade name) of wheat bran as the market sale of principal component.Also have, in an embodiment of the present invention, adopted this ヒ-ト コ Application Port as the fermentation auxiliary material.Through in contaminated soil, adding, cooperate such fermentation auxiliary material, for example ヒ-ト コ Application Port (below abbreviate " HC " as) can make the soil moisture fully rise.
Therefore, ventilate to contaminated soil in the winter time or during low temperature such as cold district, even in soil, supply gas cold air and/or air-breathing; Also can make the aerobe activation; The polluter decomposability improves, but temperature rises excessively sometimes, therefore controls through ventilation.
Also have, when the soil moisture was lower than 10 ℃, aerobic polluter degrading activity was reduced to the degree that almost can't confirm in the soil.On the other hand, be higher than at the soil moisture under 50 ℃ the scope, flora is different fully, can not expect the degrading activity of polluter.In addition, as 25～40 ℃ of the preferred soil moistures, has best degrading activity, so the purification efficiency of organic pollution materials fully improves.
In an embodiment, adopt biological heap type ventilation to purify.Also have, the addition that makes HC is 2 quality %.In addition, in order to be adjusted to the soil moisture that aerobic degrading activity improves, to the air quantity of contaminated soil ventilation, every 1m
3Soil is 0.02m
3/ minute (=0.02VVM).In addition, as nutrient source, add nitrogen and phosphorus with the ratio of C (oil content): N (nitrogen): P (phosphorus)=100:5:0.5.
As stated the HC of 2 quality % being added into above-mentioned soil, adopt the variation of the soil moisture in the purification method of biological heap type ventilation to be shown in Fig. 1.Also have, Fig. 1 (a) is the expression figure line that the soil moisture changes in the type ventilating mode of supplying gas, and Fig. 1 (b) is the curve that the soil moisture changes in the expression attraction type ventilating mode.Also have, the GL among this figure means ground level (groundlevel), for example, GL+30 mean from ground level extremely+interval of 30cm.
Through the interpolation of HC, shown in Fig. 1 (a), the soil moisture in the type of the supplying gas ventilating mode confirms that the most about 30 ℃ temperature rises.On the other hand, shown in Fig. 1 (b), the soil moisture in the attraction type ventilating mode, temperature rises about 5 ℃.As its reason, think that the heap of attraction type ventilating mode is that small-sized (heap of the type of supplying gas ventilating mode is 32m
3, and the attraction type ventilating mode is 5m
3), heat release easily.Also have, standard regions has been added cow dung compost and nutrient source, and stirring area and standard regions are same, have added cow dung compost and nutrient source, and whenever stirs at a distance from 1 week.
In addition, the contaminated soil that pollutes with the oil content (n-hexane extract) that is used as polluter is as object, the contaminated soil purification efficiency in the examination attraction type ventilating mode.Its result is shown in Fig. 2.
Fig. 2 (a) be expression contaminated soil purification efficiency utilization GC/FID (gas-chromatography of the band hydrogen flame ionization detector) concentration of oil of method measure result's figure, Fig. 2 (b) is that expression has utilized the concentration of oil of carbon tetrachloride/IR method to measure result's figure.Also have, FID (hydrogen flame ionization detector) utilizes the ion and the electronics that generate when flammable organic compound is burnt in the hydrogen flame, detect the electric current that flows.In addition, carbon tetrachloride/IR method is the organic compound that extracts with carbon tetrachloride, and the absorbing state of utilizing infrared radiation to produce is analyzed.
As shown in Figure 2; In the attraction type heap; Based on the concentration of oil of GC/FID method (referring to Fig. 2 (a)) with carbon tetrachloride/IR method (referring to Fig. 2 (b)), any in all minimizings continuously of standard regions at 1st month, and add the district at HC; Preceding 2 weeks sharply reduced, and finished not observe change in concentration thereafter up to 1st month.In addition, add the district at HC, preceding 2 weeks sharply reduce, but finish not observe change in concentration up to 1st month thereafter.In addition, add the district at HC, the result that concentration of oil minimizing speed rises hints following possibility; The main easy decomposability composition of preceding 2 all oil contents (for example; Gasolene ingredient, light oil become to grade, or the less aliphatic hydrocarbon, 3 of carbon number encircles following aromatic hydrocarbon etc.) be decomposed, reach poised state rapidly.Also have,,, think that also the rising of the soil moisture has promoted the evaporation of the volatile ingredient in the oil content to scatter and disappear except aerobic oil content degrading activity improves as the reason that concentration of oil reduces.
< soil improves effect >
In addition, because fermentation auxiliary material of the present invention contain a large amount of vegetative fibers, through adding the fermentation auxiliary material, the aeration of soil improves, and scorching hot decrement also increases.Its result sees that soil improves effect.Moistening density (g/cm with this soil aeration of expression
3) and soil particle between clearance rate (%) be shown in table 1.On the other hand, will be shown in table 2 as the scorching hot decrement (%) of the organic matter figureofmerit that contains in the soil.
Table 1
| Moistening density (g/cm 3) | Clearance rate (%) | Remarks | |
| Standard average (supplying gas) | 1.641 | 47.2 | |
| Add HC average (supplying gas) | 1.572 | 49.4 | Add HC (2 quality %) |
| Standard average (air-breathing) | 1.682 | 48.0 | |
| Add HC average (air-breathing) | 1.579 | 51.3 | Add HC (2 quality %) |
As shown in table 1, through adding the HC of 2 quality %, moistening density reduces, and simultaneously native interparticle clearance rate increases.Hence one can see that, and through adding 2 quality %HC, the aeration of soil improves.
Table 2
As shown in table 2, through adding 2 quality %HC, scorching hot decrement increases about 0.6%.Also have, represent in the last table, but the HC addition in summer, owing to the soil moisture is fully high, comparing during with low temperature can be on a small quantity.Aeration through composition soil improves, and contains organic soil in a large number, does not hinder aerobic activation, promotes the decomposition of organic pollution materials with aerobe.
Fig. 3 is the figure that is illustrated in the relation of temperature and the soil moisture under the different HC additions.According to these relations, when the soil moisture was 10～50 ℃, the HC addition can be 0.2～5 quality %.In addition, when the soil moisture was 25～40 ℃ of preferred temperature, the HC addition was that 0.5～5 quality % gets final product.Concrete addition can suitably determine according to conditions such as temperature.
Fig. 4 is the graph of a relation of expression to the HC of contaminated soil addition and throughput.Even add HC, as not ventilating fully, then aerobic activity becomes insufficient, on the other hand, when ventilation surpasses necessary amounts, for example, when throughput is too much during low temperature, might produce the result that the soil moisture is descended.Therefore, throughput satisfies necessary throughput, more preferably is controlled in the scope about necessary throughput+0.03VVM.
Ventilation in above-mentioned cleaning procedure is carried out through controlling arbitrary side air-breathing or that supply gas.These control methods also depend on the size or the venting capability of heap.Yet; Because of the soil property difference through any when control of ventilating air-breathing or that supply gas, produce the air muscle in also will considering to pile, perhaps the oxygen in the aerobic activation consumed cabin air in the heap; Air can't be fully current, the fully activation of aerobe in the overall stack.Therefore, produce sufficient degrading activity, preferably with the air-breathing and combination of supplying gas in order in overall stack, to make aerobe.Thus, change the air muscle, or ventilate and become possibility, air is fully spreaded all in soil from piling inside and outer rim.When carrying out this ventilation control, the temperature in piling is controlled so that aerobic activation fully becomes easy.Also have, air-breathingly can suitably set, for example, replace switching cycle ground and carry out with supplying gas air-breathing with combination that supply gas.In addition, to the switching of supplying gas and from supplying gas to air-breathing switching timing, for example, when ventilation, measure the soil moisture, gas concentration lwevel from air-breathing, consideration its mensuration in limit is suitably set on the limit as a result.
The result of this embodiment is shown in Fig. 5.In the present embodiment, in soil, adding 0.3 quality %HC, was air-breathing from first day (0 day) to 20 days, switched to from the 20th day and supplied gas, and ventilated.
As shown in Figure 5, through in soil, adding HC, temperature begins to rise in the soil, with arriving 30 ℃ of maximum temperatures, decline gradually then on the 7th～11.Be accompanied by the rising of temperature in the soil, oxygen concentration reduces, and gas concentration lwevel rises.Thus, the hint microbial activity raises.On the other hand, during temperature descends gradually in soil (from the 11st day to the 20th day), oxygen concentration and gas concentration lwevel value are almost constant, and the necessary oxygen of microbial activity has the danger of shortage.Therefore, supplied gas from air-breathing switching to, oxygen concentration is risen, gas concentration lwevel is reduced on 20th.Through the switching of this ventilating mode, the diffusion effect of air (oxygen) Xiang Tuzhong improves, and oil content decomposes effect and also improves.That is, be the concentration of oil of 413mg/kg at the first day, only shaded on 16th to 378mg/kg.Yet, on 20th, supply gas through switching to ventilating mode, significantly be reduced to below the 250mg/kg at concentration of oil on the 26th.
In addition, as the method that air is fully spreaded all over, the time method (for example, intermittently ventilation) of not carrying out circulation of air is set through temporarily stopping to ventilate thereby also have.Adopt this control method, make the temperature constant in the heap during low temperature easily.In addition,, give microorganism, when ventilating then, can seek the raising of microbial activity with load through temporarily stopping the supply of the oxygen that aerobe consumes.For example, stop to ventilate 12 hours etc. after can considering to ventilate repeatedly 12 hours.Carry out the timing of this ventilation control, suitably set according to soil etc., heap situation or pollutional condition, temperature etc.
The result of this embodiment is shown in Fig. 6.In the present embodiment, in soil, add 2 quality %HC, under 5 ℃ of throughput 20mL/min/L, atmosphere temperature degree, carry out intermittence and ventilate.This is intermittently ventilated to carry out repeatedly 8 hour ventilation/day.In addition, also ventilate continuously (24 hour ventilation/day) as comparative example.
As shown in Figure 6, when having implemented intermittently to ventilate, compare when having implemented continuous ventilation, though the maximum temperature of temperature is low in the soil, the state continuance that temperature is high.Thus, for the cleaning test in 2～3 weeks, intermittently ventilation is compared with continuous ventilation, can expect the promotion of clean-up effect.
This aerobic pollution degrading activity receives about the quality as the organic pollution materials of the material that is decomposed.Therefore, be prone to the decomposability composition and roughly be decomposed, because of after microbial activity reduces oxygen demand, for example, because it is inner to utilize during low temperature ventilation that the outer pneumatic transmission of low temperature is gone into heap, so can cause soil moisture reduction.Because of residual organic pollution materials is not to be prone to the decomposability composition, so, the soil moisture of aerobe activation is suitably kept, thereby can be promoted removing pollutant more through reducing throughput.
The result of this embodiment is shown in Fig. 7.In soil, add 2 quality %HC, be stirred to 1st month (the 28th day), carry out subregion to this soil then, divide district's (present embodiment) that paired throughput controls with to the unsteered district of throughput (comparative example).Also have,, after the 28th day, make throughput be reduced to 5mL/min/L from 25mL/min/L in the district that throughput is controlled.On 28th, temperature sharply reduced in the soil, and the easy decomposability composition of the organic pollution materials that contains in the hint soil is decomposed.On the other hand, in the district that throughput is controlled, throughput continues with 25mL/min/L.Its result in the district that throughput is controlled, and compares the unsteered district of throughput as present embodiment, the minimizing amplitude of temperature in the soil is reduced (referring to Fig. 7 (a)), in addition, can make the minimizing amplitude of oil content increase (referring to Fig. 7 (b)).
According to the present invention,, the purification efficiency of contaminated soil is fully improved even also can be controlled at the aerobic activity sufficient temperature that becomes to the temperature of contaminated soil during low temperature.In addition, owing to soil aeration also improves, so also can improve the proterties of soil.
Claims (5)
1. the purification method of contaminated soil; Be through ventilating to the contaminated soil that is polluted by oil content; Make aerobe activation with above-mentioned oil content decomposability; Thereby the purification method with the contaminated soil of above-mentioned contaminated soil purification is decomposed in above-mentioned oil content fermentation; It is characterized in that; Obtain the relation between the necessary throughput of lower limit of throughput when making an addition to above-mentioned contaminated soil as the quality % of the fermentation auxiliary material of principal component and with the above-mentioned fermentation auxiliary material of this quality %, above-mentioned aerobe activation with wheat bran as the relation of substantial linear; Relation according to the temperature of outer temperature and above-mentioned contaminated soil; The quality % of the above-mentioned fermentation auxiliary material that add for above-mentioned contaminated soil is confirmed as 0.2～5 quality %, adds the fermentation auxiliary material of above-mentioned definite quality % for above-mentioned contaminated soil, more than the above-mentioned necessary throughput corresponding, than the scope inner control throughput below the throughput of the high 0.03VVM of this necessity throughput with the quality % of above-mentioned definite above-mentioned fermentation auxiliary material so that the temperature of this contaminated soil is 10～50 ℃.
2. the purification method of the described contaminated soil of claim 1 is characterized in that, through carrying out the control of above-mentioned throughput with air-breathing with the combination of supplying gas.
3. the purification method of each described contaminated soil of claim 1～2 is characterized in that, in the control of above-mentioned throughput, will ventilate temporarily stops.
4. the purification method of each described contaminated soil of claim 1～2 is characterized in that, after the easy decomposability composition with above-mentioned oil content decomposes, above-mentioned throughput is reduced.
5. the purification method of the described contaminated soil of claim 3 is characterized in that, after the easy decomposability composition with above-mentioned oil content decomposes, above-mentioned throughput is reduced.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP054140/2005 | 2005-02-28 | ||
| JP2005054140 | 2005-02-28 | ||
| PCT/JP2006/302442 WO2006092950A1 (en) | 2005-02-28 | 2006-02-13 | Method of purifying polluted soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101119812A CN101119812A (en) | 2008-02-06 |
| CN101119812B true CN101119812B (en) | 2012-11-07 |
Family
ID=36940987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800047389A Expired - Fee Related CN101119812B (en) | 2005-02-28 | 2006-02-13 | Method of purifying polluted soil |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5145034B2 (en) |
| KR (1) | KR101284966B1 (en) |
| CN (1) | CN101119812B (en) |
| WO (1) | WO2006092950A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5481846B2 (en) * | 2007-12-07 | 2014-04-23 | 栗田工業株式会社 | Method for purifying contaminated soil or groundwater |
| KR100872862B1 (en) | 2008-06-11 | 2008-12-10 | 주식회사 한미엔텍 | Remediation of the contaminated soil |
| JP2011072923A (en) * | 2009-09-30 | 2011-04-14 | Kurita Water Ind Ltd | Method for purifying contaminated soil or ground water |
| JP2011212669A (en) * | 2010-12-17 | 2011-10-27 | Eco Renaissance Entec:Kk | Decontaminating method for soil pollution |
| JP6852330B2 (en) * | 2016-09-26 | 2021-03-31 | 株式会社大林組 | How to purify contaminated soil |
| CN109604330B (en) * | 2018-12-05 | 2020-11-13 | 唐山柯林环保科技有限公司 | System and method for repairing winter soil in cold area through microorganisms |
| JP7334932B2 (en) * | 2019-05-30 | 2023-08-29 | 有限会社エコルネサンス・エンテック | Method for recycling contaminated soil |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2879808B2 (en) * | 1993-10-07 | 1999-04-05 | 鹿島建設株式会社 | How to clean contaminated soil |
| JP2001008550A (en) * | 1999-06-30 | 2001-01-16 | Goko Kikaku:Kk | Method for reducing nitrate nitrogen in soil and material used for the method |
| JP2003154352A (en) * | 2001-09-10 | 2003-05-27 | Fuji Photo Film Co Ltd | Method for restoring contaminated soil by microorganism |
| JP4067447B2 (en) * | 2002-05-09 | 2008-03-26 | 日清製粉株式会社 | Purification method for contaminated soil |
| JP3948614B2 (en) * | 2002-05-23 | 2007-07-25 | 鹿島建設株式会社 | Biological purification method and apparatus for contaminated soil |
-
2006
- 2006-02-13 CN CN2006800047389A patent/CN101119812B/en not_active Expired - Fee Related
- 2006-02-13 WO PCT/JP2006/302442 patent/WO2006092950A1/en not_active Application Discontinuation
- 2006-02-13 JP JP2007505837A patent/JP5145034B2/en active Active
- 2006-02-13 KR KR1020077017821A patent/KR101284966B1/en active IP Right Grant
Non-Patent Citations (5)
| Title |
|---|
| JP特开2001-8550A 2001.01.16 |
| JP特开2003-154352A 2003.05.27 |
| JP特开2003-340431A 2003.12.02 |
| JP特开2004-25172A 2004.01.29 |
| JP特开平7-100459A 1995.04.18 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070110843A (en) | 2007-11-20 |
| WO2006092950A1 (en) | 2006-09-08 |
| JPWO2006092950A1 (en) | 2008-08-07 |
| JP5145034B2 (en) | 2013-02-13 |
| KR101284966B1 (en) | 2013-07-10 |
| CN101119812A (en) | 2008-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Miller | Composting of municipal solid waste and its components | |
| CN101119812B (en) | Method of purifying polluted soil | |
| CN111662853B (en) | Kitchen waste biological drying stabilizing microbial agent and preparation method and application thereof | |
| KR101806156B1 (en) | Method for manufacturing manure by microorganism using organic waste and the manure manufactured thereof | |
| Nozhevnikova et al. | Composition of a microbial community at different stages of composting and the prospects for compost production from municipal organic waste | |
| KR100378667B1 (en) | Orderlessfying and converting method into compost of excreta and composition thereof | |
| CN104529112A (en) | Sludge bio-drying treatment technology | |
| EP2767585A1 (en) | Microbiological method of H2S removal from biogas | |
| CN108440035B (en) | Composting method for reducing emission of nitrous oxide and ammonia gas | |
| KR20190033890A (en) | Microbial agent for simultaneous degradation of methane and odor and the method for simultaneous degradation of methane and odor using the same | |
| CN108102990B (en) | Microecological preparation with deodorization function and preparation method and application thereof | |
| Ouyang et al. | Effect of biochar structure on H2S emissions during sludge aerobic composting: insights into microscale characterization and microbial mechanism | |
| CN103896641B (en) | Food-borne organic waste degrading bacteria carrier | |
| JP3676884B2 (en) | Recycling method of organic waste | |
| CN101318104B (en) | Biological oxidation filter material, filter material preparation and application of the same in odor treatment | |
| CN113637604B (en) | Microbial inoculum and application thereof in-situ degradation of high-salt high-oil kitchen waste | |
| WO2009091167A2 (en) | Method for manufacturing inorganic porous body supported with microorganisms of high concentration | |
| WO1990009964A1 (en) | Biological treatment of sewage sludge or similar waste matter | |
| CN106905072A (en) | A kind of stalk glows and quick humification joint Application way and its humic fertilizer product | |
| JPH07100459A (en) | Polluted soil purifying method | |
| CN113716989A (en) | Complex enzyme preparation for kitchen waste compost and preparation and application method thereof | |
| JP2012224686A (en) | Composition for removing environmental harmful material and method for producing the same | |
| CN110076180A (en) | A kind of house refuse aerobic high-heat fermentation accelerant and its methods for making and using same | |
| Chandra et al. | The Use of PMDE with Sugar Industries Pressmud for Composting: A Green Technology for Safe Disposal in the Environment | |
| Richard | Fundamental parameters of aerobic solid-state bioconversion processes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |