CN212792400U - Microbial degradation device for organic contaminated soil - Google Patents
Microbial degradation device for organic contaminated soil Download PDFInfo
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- CN212792400U CN212792400U CN202020689832.XU CN202020689832U CN212792400U CN 212792400 U CN212792400 U CN 212792400U CN 202020689832 U CN202020689832 U CN 202020689832U CN 212792400 U CN212792400 U CN 212792400U
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- 239000002689 soil Substances 0.000 title claims abstract description 47
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 34
- 230000015556 catabolic process Effects 0.000 title claims abstract description 30
- 230000000813 microbial effect Effects 0.000 title claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 239000011229 interlayer Substances 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 6
- 238000005067 remediation Methods 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 7
- 239000002957 persistent organic pollutant Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
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- 238000002156 mixing Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
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- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 241000589151 Azotobacter Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 241000195493 Cryptophyta Species 0.000 description 1
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- 241000108664 Nitrobacteria Species 0.000 description 1
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- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 239000002068 microbial inoculum Substances 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 239000002912 waste gas Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of organic contaminated soil remediation, in particular to a microbial degradation device for organic contaminated soil, which comprises a reaction tank body and a constant temperature interlayer arranged outside the reaction tank body, wherein a stirring shaft is arranged in the middle of the reaction tank body and is connected with a plurality of groups of scraper U-shaped stirring paddles, a feed inlet and an auxiliary material inlet are arranged at the top of the reaction tank body, a discharge outlet is arranged at the bottom of the reaction tank body, and a plurality of aeration pipes are also arranged on the inner wall of the reaction tank body; the upper part of the constant temperature interlayer is provided with a constant temperature liquid inlet, and the bottom of the constant temperature interlayer is provided with a constant temperature liquid outlet; still include a plurality of heating device that are used for heating the intermediate layer of constant temperature, solved the general structure complicacy of present ectopic microbial degradation reaction equipment, complex operation, soil aeration is not abundant, the problem of little biodegradable inefficiency.
Description
Technical Field
The utility model belongs to the technical field of the cubical switchboard technique and specifically relates to a microbial degradation device for organic contaminated soil.
Background
Soil microorganisms are a general term for bacteria, fungi, actinomycetes and algae living in soil, the individual microorganisms are tiny and generally calculated by micron or nanometer, the types and the quantity of the microorganisms change along with the difference of soil forming environment and soil layer depth, the microorganisms perform oxidation, nitrification, ammoniation, nitrogen fixation, sulfuration and other processes in the soil to promote the decomposition of soil organic matters and the conversion of nutrients, the soil microorganisms generally have the largest quantity of bacteria, and beneficial bacteria comprise azotobacter, nitrobacteria and saprophytic bacteria; harmful bacteria include denitrifying bacteria, and the application of organic fertilizer is beneficial to the growth and reproduction of microorganisms.
The organic contaminated soil is soil contaminated with organic substances such as petroleum hydrocarbon and polycyclic aromatic hydrocarbon (hydrocarbon having 2 or more benzene rings in a molecule). Organic pollutants are highly stable in soil, difficult to degrade and have three effects, so that the remediation of organic pollution sites is greatly concerned. Microbial degradation technology is recommended because of its advantages of low repair cost, little environmental impact, no pollution, etc.
The microbial degradation method comprises in-situ treatment and ex-situ treatment. In-situ disposal is not widely applied due to the restrictions of high construction cost, long repair period, high requirement on soil quality and the like. The main disposal mode of ectopic microbial degradation is a dry biological heap method, and the method uniformly mixes microbial degradation bacteria with soil by cleaning and digging polluted soil and screening pretreatment and provides ideal environmental conditions suitable for microbial degradation. And (3) transporting the mixed soil and pebbles into a soil disposal site, paving the pebbles at the bottommost layer of the biological pile for gas distribution and protection of an air pumping pipe network, operating the biological pile to treat the polluted soil, and periodically monitoring parameters such as the removal degree of pollutants, air pumping quantity, pressure, temperature, humidity, oxygen content in the pile and the like. And (3) treating waste gas generated in the treatment process in tail gas purification equipment, allowing the percolate to enter a wastewater treatment facility, and allowing the repaired soil to reach a repair target and then be used for landfill.
The microbial reactor dry method for degrading the organic polluted soil has the advantages of relatively low cost, large treatment amount, environmental friendliness and the like, but has the defects of long treatment period, large occupied area, high investment ratio of engineering supporting facilities and the like. Factors which are generally required to be controlled for degrading organic polluted soil by a microbial heap dry method include temperature, ventilation quantity, soil mixing uniformity and the like, and in short, the requirement on the environment is high. The existing ectopic microbial degradation reaction equipment is generally complex in structure, complex to operate, insufficient in soil aeration, poor in adaptability to soil with different viscosities and particle sizes and difficult in uniform mixing of the soil, so that the microbial degradation efficiency is low.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at providing a microbial degradation device for organic contaminated soil has solved the general structure complicacy of present heterotopic microbial degradation response device, complex operation, and soil aeration is insufficient, the problem of microbial degradation inefficiency.
(II) contents of utility model
In order to solve the technical problem, the utility model provides a microbial degradation device for organic contaminated soil, which comprises a reaction tank body and a constant temperature interlayer arranged outside the reaction tank body, wherein a stirring shaft is arranged in the middle of the reaction tank body and is connected with a plurality of groups of scraper U-shaped stirring paddles, a feed inlet and an auxiliary material inlet are arranged at the top of the reaction tank body, a discharge outlet is arranged at the bottom of the reaction tank body, and a plurality of aeration pipes are also arranged on the inner wall of the reaction tank body; the upper part of the constant temperature interlayer is provided with a constant temperature liquid inlet, and the bottom of the constant temperature interlayer is provided with a constant temperature liquid outlet; and the heating device is used for heating the constant-temperature interlayer.
Furthermore, 3 aeration pipes are arranged and fixed on the inner wall of the reaction tank body at intervals of 120 degrees.
Furthermore, the stirring shaft is connected with a plurality of groups of scraper type U-shaped stirring paddles through a plurality of S-shaped connecting plates.
Furthermore, scraping blades made of soft materials are arranged outside the groups of scraper type U-shaped stirring paddles.
Furthermore, the tail end of the aeration pipe is provided with a honeycomb-shaped aeration head.
Furthermore, the heating devices are two groups of electric heating pipes which are oppositely arranged on two sides of the bottom of the constant-temperature interlayer.
Furthermore, a temperature sensor and a temperature control device are independently arranged in the reaction tank body and in the constant-temperature interlayer.
(III) the beneficial effects.
The beneficial effect of above-mentioned scheme: the utility model provides a microbial degradation device for organic contaminated soil, drive the organic pollutant of stirring rake in to the retort body through the (mixing) shaft and stir, simultaneously from its auxiliary material import to add the special effect microbial inoculum of certain proportion among the retort body, inorganic nutritive salt, surface active agent, assist with the interbedded thermostatic control of constant temperature, the maximum augmentation efficiency that improves the microorganism with higher speed, improve organic pollutant's degradation efficiency, meanwhile, many aeration pipes still aerate, improve the dissolved oxygen volume in the mud, further improve degradation efficiency, compare in current degradation reaction equipment, and is simple in structure, the advantage of simple operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first view angle of a microbial degradation device for organically-polluted soil according to the present invention.
FIG. 2 is a schematic structural diagram of a second visual angle of the microbial degradation apparatus for organically-polluted soil according to the present invention
Reference numerals:
the reference numerals in the figures illustrate:
the device comprises a reaction tank body 1, a feed inlet 11, an auxiliary material inlet 12 and a discharge outlet 13; a constant temperature interlayer 2; a constant temperature liquid inlet 21; a constant temperature liquid outlet 22; an electric heating tube 3; a stirring shaft 41; a stirring paddle 42; an aeration pipe 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a microbial degradation device for organic contaminated soil, as shown in fig. 1 and fig. 2, comprising a reaction tank body 1 and a constant temperature interlayer 2 arranged outside the reaction tank body 1, wherein the upper part of the constant temperature interlayer 2 is provided with a constant temperature liquid inlet 21, and the bottom of the constant temperature interlayer is provided with a constant temperature liquid outlet 22; still include a plurality of heating device that are used for heating constant temperature intermediate layer 2, be provided with (mixing) shaft 41 in the middle of the retort body 1 is positive, and stirring shaft 41 connects the multiunit and scrapes formula U type stirring rake, and 1 top of the retort body is equipped with feed inlet 11 and auxiliary material import 12, and the bottom of the retort body 1 is equipped with the discharge gate, has still installed many aeration pipes 5 on the inner wall of the retort body 1, and aeration pipe 5 is equipped with 3, and the inner wall of the retort body 1 is fixed in to 120 degrees at mutual interval.
Further, the stirring shaft 41 is connected with a plurality of groups of scraper U-shaped stirring paddles through a plurality of S-shaped connecting plates, and the scraping blades made of soft materials are arranged outside the plurality of groups of scraper U-shaped stirring paddles, so that the stirring effect is ensured, and the contact gap between the stirring paddle 42 and the inner wall of the reaction tank body 1 is also reduced by the scraping blades made of the soft materials.
Furthermore, the tail end of the aeration pipe 5 is provided with a honeycomb-shaped aeration head, so that the diameter of bubbles is reduced, and the distribution efficiency of gas is improved.
Further, the heating device is an electric heating tube 3, and the electric heating tubes 3 are arranged in two groups and are oppositely arranged on two sides of the bottom of the constant-temperature interlayer 2. Temperature sensor and temperature control device all independently are provided with in the retort body 1 and the constant temperature intermediate layer 2 for keep constant 30 degrees with the stability of constant temperature intermediate layer 2, in order to accelerate the going on of degradation reaction.
The working principle is as follows: firstly, adding a certain proportion of water into a reaction tank body 1, starting a stirring shaft 41 and a stirring paddle, carrying out excavation, transportation, screening pretreatment and other steps on organic polluted soil, and then adding the organic polluted soil into the reaction tank body 1 from a feed inlet in proportion to enable water and soil in the reaction tank body 1 to be in a slurry state. And opening the aeration pipe 5 to continuously aerate the slurry, so as to improve the dissolved oxygen in the slurry. Then a specific microbial agent, inorganic nutrient salt and a surfactant are added in a certain proportion from an auxiliary material inlet 12 at the upper part of the reactor. The organic pollutants provide a unique carbon source for the amplification of the microorganisms, the inorganic nutrient salts provide trace elements for the amplification of the microorganisms, and the surfactant mainly improves the mass transfer efficiency of the organic pollutants and water and improves the degradation efficiency of the microorganisms. The purified water is added into the constant-temperature interlayer 2, the electric heating tube 3 is used for keeping the temperature stability, the heating temperature is set to be 30 ℃, the temperature of the microorganisms in the reactor is kept stable at 30 ℃, the amplification efficiency of the microorganisms is improved, and the degradation efficiency of organic pollutants is improved.
After the degradation of the organic pollutants is finished, the slurry after the reaction is discharged from a discharge port 13 at the lower part of the reaction tank body 1 for solid-liquid separation. And backfilling the separated solid-phase soil after the detection is qualified, and recycling the liquid-phase water.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A microbial degradation device for organic contaminated soil is characterized by comprising a reaction tank body and a constant-temperature interlayer arranged outside the reaction tank body, wherein a stirring shaft is arranged in the middle of the reaction tank body and connected with a plurality of groups of scraper U-shaped stirring paddles, a feed inlet and an auxiliary material inlet are formed in the top of the reaction tank body, a discharge outlet is formed in the bottom of the reaction tank body, and a plurality of aeration pipes are further arranged on the inner wall of the reaction tank body; the upper part of the constant-temperature interlayer is provided with a constant-temperature liquid inlet, and the bottom of the constant-temperature interlayer is provided with a constant-temperature liquid outlet; and the heating device is used for heating the constant-temperature interlayer.
2. The microbial degradation apparatus for organically-polluted soil according to claim 1, wherein: the aeration pipe is equipped with 3, separates 120 degrees each other and is fixed in the inner wall of retort body.
3. The microbial degradation apparatus for organically-polluted soil according to claim 1, wherein: the stirring shaft is connected with the plurality of groups of scraper type U-shaped stirring paddles through a plurality of S-shaped connecting plates.
4. A microbial degradation apparatus for organically-polluted soil according to claim 3, wherein: and scraping blades made of soft materials are arranged outside the multiple groups of scraper type U-shaped stirring paddles.
5. The microbial degradation apparatus for organically-polluted soil according to claim 1, wherein: the tail end of the aeration pipe is provided with a honeycomb-shaped aeration head.
6. The microbial degradation apparatus for organically-polluted soil according to claim 1, wherein: the heating device is composed of two groups of electric heating pipes which are oppositely arranged on two sides of the bottom of the constant-temperature interlayer.
7. The microbial degradation apparatus for organically-polluted soil according to claim 1, wherein: and temperature sensors and temperature control devices are independently arranged in the reaction tank body and the constant-temperature interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689832.XU CN212792400U (en) | 2020-04-29 | 2020-04-29 | Microbial degradation device for organic contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689832.XU CN212792400U (en) | 2020-04-29 | 2020-04-29 | Microbial degradation device for organic contaminated soil |
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| Publication Number | Publication Date |
|---|---|
| CN212792400U true CN212792400U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020689832.XU Expired - Fee Related CN212792400U (en) | 2020-04-29 | 2020-04-29 | Microbial degradation device for organic contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405261A (en) * | 2022-01-22 | 2022-04-29 | 连云港百仑生物反应器科技有限公司 | Temperature-controllable constant-pressure bioreactor and method for automatically treating waste gas |
-
2020
- 2020-04-29 CN CN202020689832.XU patent/CN212792400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405261A (en) * | 2022-01-22 | 2022-04-29 | 连云港百仑生物反应器科技有限公司 | Temperature-controllable constant-pressure bioreactor and method for automatically treating waste gas |
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Granted publication date: 20210326 |