CN111659730A - Ectopic microorganism soil remediation method - Google Patents
Ectopic microorganism soil remediation method Download PDFInfo
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- CN111659730A CN111659730A CN202010592165.8A CN202010592165A CN111659730A CN 111659730 A CN111659730 A CN 111659730A CN 202010592165 A CN202010592165 A CN 202010592165A CN 111659730 A CN111659730 A CN 111659730A
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- 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
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Abstract
The invention belongs to the field of soil remediation, and particularly relates to an ectopic microorganism soil remediation method, which comprises the following steps: s1, selecting a repair site, and selecting a flat open area without shielding and with good ventilation condition; s2, placing the polluted soil, digging out the polluted soil from the original site, displacing the polluted soil and placing the excavated polluted soil in each soil remediation box in equal quantity; s3, microbial floras are put in, wherein the microbial floras comprise actinomycetes, nocardia, microbacterium and mycobacteria, and the ratio of the floras is 3:3:2: 1; s4, adding nutrients, namely adding a proper amount of nutrients such as nitrogen, phosphorus, nutrient salt and the like according to the amount of the polluted soil in the soil remediation box; and S5, restoring the soil, periodically sampling and detecting the soil in the soil restoration box, and moving the soil back to the original place after the soil is detected to be qualified. The invention can change the color depth of the mixed gas in the gas collection cavity according to the change of the external temperature, plays the role of shading or transmitting light, avoids mass death of microbial strains and ensures the degradation efficiency of the polluted soil.
Description
Technical Field
The invention belongs to the field of soil remediation, and particularly relates to an ectopic microorganism soil remediation method.
Background
With the development of science and technology, people are aware of the importance of environmental protection more and more, and therefore, a plurality of methods for environmental remediation are established, wherein the remediation and restoration of the polluted soil are an important part, and the existing methods for microbial soil restoration are divided into in-situ microbial remediation and ectopic microbial remediation from a restoration site, wherein the ectopic microbial remediation needs to move the polluted soil to a corresponding reactor and then add microbial flora for biodegradation.
When the ectopic microorganism remediation is carried out on the heavy petroleum polluted soil, sufficient illumination is ensured to promote the degradation efficiency of microbial flora, and the direct irradiation of sunlight at high temperature in the noon in summer to cause mass death of the microbial flora is avoided, and the polluted soil is turned over frequently when needed, so as to promote the flow and blending of aerobic bacteria in each area in the polluted soil, and ensure the overall quality of the microbial flora.
To this end, we propose a method for soil remediation by ectopic microorganisms to solve the above problems.
Disclosure of Invention
The invention aims to provide an ectopic microorganism soil remediation method which is easy to operate and low in cost aiming at the problems of inconvenient operation and high cost.
In order to achieve the purpose, the invention adopts the following technical scheme: an ectopic microorganism soil remediation method comprises the following steps:
s1, selecting a restoration site, selecting a flat open area without shielding and with good ventilation conditions, and arranging a plurality of soil restoration boxes in the site at equal intervals;
s2, placing the polluted soil, digging out the polluted soil from the original site, displacing the polluted soil, placing the polluted soil in each soil remediation box in an equal amount, and keeping a distance of 15-20cm between the upper surface of the polluted soil and the cover plate;
s3, putting microbial floras, and putting a proper amount of microbial floras into the soil remediation box, wherein the microbial floras comprise actinomycetes, nocardia, microbacterium and mycobacteria, and the ratio of the floras is 3:3:2: 1;
s4, adding nutrients, adding a proper amount of nutrients such as nitrogen, phosphorus, nutrient salt and the like according to the amount of the polluted soil in the soil remediation box, and introducing oxygen into the soil remediation box;
s5, soil is reset, a vertical sampling method is adopted, the soil in the soil remediation box is periodically sampled and detected, and the soil is taken out and moved back to the original place after the detection is qualified;
above-mentioned soil repair box that ectopic microorganism soil repair in-process used includes box and apron, a plurality of seal boxes have been arranged to the upper surface equidistance of apron, it has the horizontally lifter plate to slide in the seal box, seal box and lifter plate are made by transparent material, the lifter plate separates the seal box for gas collection chamber and transfusion cavity, the gas collection intracavity is filled with mist, be equipped with many vertical pivots in the box, the pivot is passed through actuating mechanism and is connected with the lifter plate transmission, install the spiral impeller outward in the pivot, the diameter of spiral impeller is by last crescent under to.
Preferably, the mixed gas is a mixed gas of nitrogen dioxide and dinitrogen tetroxide.
Preferably, drive mechanism is including running through the screw thread section of thick bamboo of setting in the lifter plate, the upper end of pivot runs through apron, seal box in proper order and extends to the seal box in and sets up, the pivot is equipped with the screw thread outward, screw thread section of thick bamboo cover establish outside the pivot and with pivot screw-thread fit.
Preferably, a nutrient solution box is installed on the side wall of the box body, a one-way infusion tube is fixedly communicated with the upper end of the nutrient solution box, the other end of the one-way infusion tube penetrates through the sealing box and extends into the infusion cavity, and an infusion hole communicated with the interior of the box body is formed in the bottom of the infusion cavity.
Compared with the prior art, the ectopic microorganism soil remediation method has the advantages that:
1. in the invention, when sunlight is directly irradiated on the soil remediation box at noon in summer, the mixed gas of nitrogen dioxide and dinitrogen tetroxide in the gas collection cavity moves towards the direction of nitrogen dioxide generation in a balanced manner in the environment with higher temperature, so that the proportion of nitrogen dioxide in the mixed gas is increased, and the nitrogen dioxide is reddish brown and has lower light transmittance, so that sunlight is difficult to irradiate into the box body due to the shielding of the sunlight with stronger noon, and the death of a large number of microbial strains is avoided, thereby ensuring the degradation efficiency of severe petroleum in the polluted soil.
2. In the invention, when the external sunlight is weak, the mixed gas of nitrogen dioxide and dinitrogen tetroxide in the gas collection cavity moves towards the generation direction of the dinitrogen tetroxide in a balanced manner in the environment with lower temperature, so that the proportion of the nitrogen dioxide in the mixed gas is reduced, and because the dinitrogen tetroxide is colorless gas, the light transmittance of the sealed box is higher, the condition that the flora in the box body is sufficiently illuminated is ensured, and the degradation efficiency of the flora is greatly improved.
3. According to the invention, when the external temperature changes, the mixed gas in the gas collection cavity moves in a balanced manner, the volume changes along with the change of the external temperature, the lifting plate is driven to move up and down under the action of the air pressure, the rotating shaft and the helical impeller are driven to rotate, the polluted soil in the box body is driven to move and mix, the flowing and blending of aerobic bacteria among all areas in the polluted soil are promoted, the overall quality of floras is improved, and the degradation treatment capacity of the floras is promoted.
4. According to the invention, when the lifting plate moves upwards, nutrient solution in the nutrient solution box can be pumped into the infusion cavity through the one-way infusion tube and sprayed to the surface of the polluted soil in the box body through the infusion hole, namely, when the external illumination changes along with time, the lifting plate repeatedly moves up and down, so that the discontinuous and repeated pumping and nutrient solution spraying are realized, the activity of each microbial flora in the soil is effectively promoted, and the remediation effect on the polluted soil is further improved.
Drawings
FIG. 1 is a schematic structural diagram of an ectopic microorganism soil remediation method according to example 1 of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic structural diagram of an ectopic microorganism soil remediation method according to example 2 of the present invention;
fig. 4 is an enlarged view of fig. 3 at B.
In the figure, a box body 1, a rotating shaft 11, a spiral impeller 12, a cover plate 2, a sealing box 3, a lifting plate 31, a gas collecting cavity 32, a transfusion cavity 33, a threaded cylinder 34, a transfusion hole 35, a nutrient solution box 4 and a one-way transfusion tube 41.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1-2, an ectopic microorganism soil remediation method comprises the following steps:
s1, selecting a restoration site, selecting a flat open area without shielding and with good ventilation conditions, and arranging a plurality of soil restoration boxes in the site at equal intervals;
s2, placing the polluted soil, digging out the polluted soil from the original site, displacing the polluted soil, placing the polluted soil in each soil remediation box in an equal amount, and keeping a distance of 15-20cm between the upper surface of the polluted soil and the cover plate 2;
s3, putting microbial floras, and putting a proper amount of microbial floras into the soil remediation box, wherein the microbial floras comprise actinomycetes, nocardia, microbacterium and mycobacteria, and the ratio of the floras is 3:3:2: 1;
s4, adding nutrients, adding a proper amount of nutrients such as nitrogen, phosphorus, nutrient salt and the like according to the amount of the polluted soil in the soil remediation box, and introducing oxygen into the soil remediation box;
s5, soil is reset, a vertical sampling method is adopted, the soil in the soil remediation box is periodically sampled and detected, and the soil is taken out and moved back to the original place after the detection is qualified;
the soil remediation box used in the ectopic microorganism soil remediation process comprises a box body 1 and a cover plate 2, a plurality of seal boxes 3 are equidistantly arranged on the upper surface of the cover plate 2, a horizontal lifting plate 31 slides in each seal box 3, each seal box 3 and each lifting plate 31 are made of transparent materials, and each sealing box 3 is divided into a gas collection cavity 32 and a transfusion cavity 33 by the corresponding lifting plate 31.
The gas collection cavity 32 is filled with mixed gas, the mixed gas is a balanced mixed gas formed by nitrogen dioxide and dinitrogen tetroxide, a plurality of vertical rotating shafts 11 are arranged in the box body 1, the rotating shafts 11 are in transmission connection with the lifting plate 31 through a driving mechanism, the spiral impeller 12 is arranged outside the rotating shafts 11, and the diameter of the spiral impeller 12 is gradually increased from top to bottom.
The transmission mechanism comprises a thread cylinder 34 penetrating through the lifting plate 31, the upper end of the rotating shaft 11 penetrates through the cover plate 2 and the sealing box 3 in sequence and extends into the sealing box 3, threads are arranged outside the rotating shaft 11 and are coarse threads, a thread lead angle is larger than an equivalent friction angle of a screw pair, the self-locking performance is not realized, and the thread cylinder 34 is sleeved outside the rotating shaft 11 and is in thread fit with the rotating shaft 11.
The working principle of the embodiment is as follows: when the sunlight is directly irradiated on the soil remediation box at noon in summer, the mixed gas of nitrogen dioxide and dinitrogen tetroxide in the gas collection cavity 32 is subjected to reversible reaction in the environment with higher temperature, the balance moves towards the generation direction of the nitrogen dioxide, and the reaction equation is N2O4＝＝2NO2And the proportion of nitrogen dioxide in the mixed gas is increased, and the nitrogen dioxide is reddish brown and has low light transmittance, so that sunlight with strong afternoon is shielded, the sunlight is difficult to irradiate into the box body 1, and a large amount of microbial strains are prevented from dying, so that the degradation efficiency of severe petroleum in the polluted soil is ensured.
When the external sunlight is weak, the mixed gas of nitrogen dioxide and dinitrogen tetroxide in the gas collection cavity 32 moves toward the generation direction of dinitrogen tetroxide in a balanced manner in a low-temperature environment, and the reaction equation is 2NO2＝＝N2O4The proportion of nitrogen dioxide in the mixed gas is reduced, and because the dinitrogen tetroxide is colorless gas, the light transmittance of the seal box 3 is higher, so that the flora in the box body 1 is ensured to be sufficiently illuminated, and the degradation efficiency of the flora is greatly improved.
When the outside temperature rises, the balance of the mixed gas in the gas collection cavity 32 moves towards the direction of nitrogen dioxide generation, the volume of the mixed gas is increased, the lifting plate 31 is pushed to move downwards under the action of air pressure, and then the rotating shaft 11 in threaded fit with the threaded cylinder 34 is driven to rotate, the spiral impeller 12 drives the polluted soil in the box body 1 to move and mix, the flowing and the blending of aerobic bacteria among all areas in the polluted soil are promoted, the overall quality of floras is improved, and the degradation treatment capacity of the floras is promoted.
When the temperature is reduced, the volume of the mixed gas is reduced, the lifting plate 31 moves upwards to drive the spiral impeller 12 to rotate reversely, the soil is reset, the spiral impeller 12 forms an upward or downward driving force on the soil when rotating, the upper-layer soil and the lower-layer soil are promoted to be exchanged, the diameter of the upper end of the spiral impeller is smaller, and the damage to the micro aerobic type biological flora on the surface of the soil is reduced.
Example 2
As shown in fig. 3 to 4, the present embodiment is different from embodiment 1 in that: the side wall mounting of box 1 has nutrient solution case 4, the fixed intercommunication in upper end of nutrient solution case 4 has one-way transfer line 41, one-way transfer line 41 only allows the nutrient solution to get into transfusion cavity 33 by nutrient solution case 4 in, the other end of one-way transfer line 41 runs through seal box 3 and extends to in transfusion cavity 33, transfusion cavity 33's bottom is equipped with the infusion hole 35 with the inside intercommunication of box 1, infusion hole 35 is the taper setting, the aperture of lower extreme is less than the upper end aperture, it is difficult for by less aperture end entering infusion hole 35 in the 1 interior air of box, and when transfusion cavity 33 internal pressure is constant, can accelerate the velocity of flow of nutrient solution in infusion hole 35, increase the distance of spraying of nutrient solution.
In this embodiment, during lifter plate 31 rebound, can be with the nutrient solution in the nutrient solution case 4 by one-way transfer line 41 suction to the infusion intracavity to spray to the contaminated soil surface in the box 1 through infusion hole 35, promptly as external illumination in-process with time variation, lifter plate 31 reciprocates repeatedly, realizes discontinuous, the suction of a lot of and sprays the nutrient solution, has effectively promoted the activity of each microbial flora in the soil, has further improved the repair effect to contaminated soil.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. An ectopic microorganism soil remediation method is characterized by comprising the following steps:
s1, selecting a restoration site, selecting a flat open area without shielding and with good ventilation conditions, and arranging a plurality of soil restoration boxes in the site at equal intervals;
s2, placing the polluted soil, digging out the polluted soil from the original site, displacing the polluted soil, placing the polluted soil in each soil remediation box in an equal amount, and keeping a distance of 15-20cm between the upper surface of the soil and the cover plate (2);
s3, putting microbial floras, and putting a proper amount of microbial floras into the soil remediation box, wherein the microbial floras comprise actinomycetes, nocardia, microbacterium and mycobacteria, and the ratio of the floras is 3:3:2: 1;
s4, adding nutrients, adding a proper amount of nutrients such as nitrogen, phosphorus, nutrient salt and the like according to the amount of the polluted soil in the soil remediation box, and introducing oxygen into the soil remediation box;
s5, soil is reset, a vertical sampling method is adopted, the soil in the soil remediation box is periodically sampled and detected, and the soil is taken out and moved back to the original place after the detection is qualified;
the soil repair box that uses among the above-mentioned ectopic microorganism soil repair process includes box (1) and apron (2), a plurality of seal box (3) have been arranged to the upper surface equidistance of apron (2), it has horizontally lifter plate (31) to slide in seal box (3), seal box (3) and lifter plate (31) are made by transparent material, lifter plate (31) are separated seal box (3) for gas collection chamber (32) and infusion chamber (33), gas collection chamber (32) intussuseption is filled with the mist, be equipped with many vertical pivot (11) in box (1), pivot (11) are connected with lifter plate (31) transmission through actuating mechanism, install spiral impeller (12) outward pivot (11), the diameter of spiral impeller (12) is by last under to crescent.
2. The ectopic microorganism soil remediation method of claim 1, wherein said mixed gas is a mixed gas of nitrogen dioxide and dinitrogen tetroxide.
3. The ectopic microorganism soil remediation method as claimed in claim 1, wherein the transmission mechanism comprises a threaded cylinder (34) penetrating through the lifting plate (31), the upper end of the rotating shaft (11) penetrates through the cover plate (2) and the seal box (3) in sequence and extends into the seal box (3), threads are arranged outside the rotating shaft (11), and the threaded cylinder (34) is sleeved outside the rotating shaft (11) and is in threaded fit with the rotating shaft (11).
4. The ectopic microorganism soil remediation method as claimed in claim 1, wherein a nutrient solution tank (4) is installed on the side wall of the tank body (1), a one-way infusion tube (41) is fixedly communicated with the upper end of the nutrient solution tank (4), the other end of the one-way infusion tube (41) penetrates through the sealed tank (3) and extends into the infusion cavity (33), and an infusion hole (35) communicated with the interior of the tank body (1) is formed in the bottom of the infusion cavity (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010592165.8A CN111659730A (en) | 2020-06-25 | 2020-06-25 | Ectopic microorganism soil remediation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010592165.8A CN111659730A (en) | 2020-06-25 | 2020-06-25 | Ectopic microorganism soil remediation method |
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| CN111659730A true CN111659730A (en) | 2020-09-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644460A (en) * | 2020-05-27 | 2020-09-11 | 张先琼 | Device and method for repairing heavy metal contaminated soil by microorganisms |
| CN112916610A (en) * | 2021-01-25 | 2021-06-08 | 苏州科技大学 | Soil treatment device and soil treatment method |
| CN113145635A (en) * | 2021-03-17 | 2021-07-23 | 中冶南方都市环保工程技术股份有限公司 | Microbial remediation equipment and remediation method suitable for contaminated soil |
| CN113649408A (en) * | 2021-08-19 | 2021-11-16 | 长沙琳里电子科技有限公司 | Soil sampling detection repair equipment |
-
2020
- 2020-06-25 CN CN202010592165.8A patent/CN111659730A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644460A (en) * | 2020-05-27 | 2020-09-11 | 张先琼 | Device and method for repairing heavy metal contaminated soil by microorganisms |
| CN111644460B (en) * | 2020-05-27 | 2021-12-07 | 深圳市量化生物科技有限公司 | Device and method for repairing heavy metal contaminated soil by microorganisms |
| CN112916610A (en) * | 2021-01-25 | 2021-06-08 | 苏州科技大学 | Soil treatment device and soil treatment method |
| CN113145635A (en) * | 2021-03-17 | 2021-07-23 | 中冶南方都市环保工程技术股份有限公司 | Microbial remediation equipment and remediation method suitable for contaminated soil |
| CN113649408A (en) * | 2021-08-19 | 2021-11-16 | 长沙琳里电子科技有限公司 | Soil sampling detection repair equipment |
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Application publication date: 20200915 |