CN115159696A

CN115159696A - Degradation pool for petroleum hydrocarbon polluted underground water and repairing method using degradation pool

Info

Publication number: CN115159696A
Application number: CN202210918510.1A
Authority: CN
Inventors: 朱雪松; 朱显; 张鑫; 潘嘉凯; 张蕾
Original assignee: Jiangsu Puze Environmental Engineering Co ltd
Current assignee: Jiangsu Puze Environmental Engineering Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-10-11

Abstract

The utility model relates to a petroleum hydrocarbon pollutes restoration method in degradation pond and applied this degradation pond of groundwater belongs to the technical field of water treatment, and this degradation pond includes the cell body, the up end of cell body is equipped with the installation frame, the length direction setting of cell body is followed to the installation frame, be equipped with on the installation frame along the microbial inoculum that installation frame length direction slided and put in the storehouse, the bottom that the microbial inoculum was put in the storehouse is equipped with puts in the mouth. The method has the advantages of small engineering quantity, reduced investment cost and reduced secondary pollution.

Description

Degradation pool for petroleum hydrocarbon polluted underground water and repairing method using degradation pool

Technical Field

The application relates to the field of water treatment, in particular to a degradation tank for petroleum hydrocarbon polluted underground water and a repairing method using the degradation tank.

Background

Petroleum hydrocarbons are mainly composed of various hydrocarbons such as n-paraffins, branched paraffins, cyclic paraffins, and aromatic hydrocarbons, and are widely present in crude oil and petroleum products. With the rapid development of the petroleum industry, nearly 60 million tons of petroleum hydrocarbon in China per year causes soil-underground water system pollution through various ways. Petroleum hydrocarbons enter the soil-groundwater system mainly through several routes: crude oil leakage and oil spill accidents, stacking of oily slag, sludge and garbage, irrigation of oily sewage, atmospheric pollution and settlement of automobile exhaust and pollution caused by application of oily pesticides. At present, petroleum hydrocarbon becomes a common pollutant in groundwater pollution, and the harmfulness and influence range of the petroleum hydrocarbon is wider due to the fluidity of the groundwater.

The related technology provides a multifunctional slow-release repairing agent applied to in-situ repairing of underground water, which mainly applies a permeable reactive barrier underground water repairing technology and removes pollutants in water by adding chemical repairing agents of calcium peroxide, clay, ferric salt, cyclodextrin and an adhesive. The process mainly removes organic matters in the groundwater through calcium peroxide oxidation, a permeable reactive barrier needs to be placed in the groundwater, the engineering quantity is large, the investment cost is high, and secondary pollution to the groundwater can be easily caused under the condition that the input quantity of the repairing agent exceeds a proper value.

Disclosure of Invention

In order to improve the technical problem, the present application provides a degradation tank for petroleum hydrocarbon-contaminated groundwater.

The application provides a degradation pond of petroleum hydrocarbon polluted groundwater, which adopts the following technical scheme:

the utility model provides a degradation pond of petroleum hydrocarbon polluted groundwater, includes the cell body, the up end of cell body is equipped with the installation frame, the length direction setting of cell body is followed to the installation frame, be equipped with the microbial inoculum that slides along installation frame length direction on the installation frame and put in the storehouse, the bottom that the microbial inoculum was put in the storehouse is equipped with puts in the mouth.

Through adopting above-mentioned technical scheme, after letting in petroleum hydrocarbon contaminated groundwater in the cell body, pour into the microbial inoculum prepared and put in the storehouse in the microbial inoculum to pour into water in the microbial inoculum puts in the storehouse and makes the microbial inoculum flow into the cell body from putting in the mouth along with rivers more easily, meanwhile, the microbial inoculum is put in the storehouse and is slided along the length direction of cell body, make the microbial inoculum put in the storehouse and remove the input that carries out the microbial inoculum on one side, thereby make the microbial inoculum input volume of each department in the cell body more even, the degradation efficiency of petroleum hydrocarbon has been improved. From the biological perspective, the microbial inoculum is utilized to degrade petroleum hydrocarbon, the degraded petroleum hydrocarbon is decomposed into water and carbon dioxide, the possibility of secondary pollution to underground water is reduced, the engineering quantity is small compared with the construction of a permeable reactive wall at the bottom of the ground, the microbial inoculum can be repeatedly utilized, and the input cost can be reduced.

Optionally, the bottom in microbial inoculum input storehouse is equipped with stirs the pipe, the storehouse intercommunication is put in with the microbial inoculum to the upper end of stirring the pipe, and the liquid level downside of cell body is located to the lower extreme.

Through adopting above-mentioned technical scheme, put in the removal in-process in storehouse at the microbial inoculum, the microbial inoculum is put in the storehouse and is driven the stirring pipe and remove together for treat prosthetic groundwater stir in the cell body when putting in to the microbial inoculum, the microbial inoculum of being convenient for mixes more evenly with treating prosthetic groundwater.

Optionally, the bottom of the microbial inoculum feeding bin is provided with a sliding plate, the sliding plate is rotationally connected with the bottom edge of one side of the microbial inoculum feeding bin close to the feeding port, the side of the microbial inoculum feeding bin far away from the feeding port is provided with a cylinder, the sliding plate is connected with a follow-up base along the length direction of the sliding plate, and the cylinder is hinged to the follow-up base.

Through adopting above-mentioned technical scheme, when the microbial inoculum is thrown in the feed bin and need be exported the microbial inoculum, the cylinder can be started, and the piston rod extension of cylinder raises the one side that the feed opening was kept away from with the microbial inoculum input bin to make the microbial inoculum output in the microbial inoculum input bin more thorough, reduce the microbial inoculum in the microbial inoculum input bin and remain.

Optionally, a water inlet pipe is arranged on the tank body, a driving mechanism is arranged on the water inlet pipe, the driving mechanism is connected with a mixing mechanism, and the mixing mechanism is arranged in the tank body.

Through adopting above-mentioned technical scheme, when treating prosthetic groundwater and getting into the cell body through the inlet tube, actuating mechanism starts, drives the running of mixing mechanism, and mixing mechanism mixes the stirring to the content in the cell body to make treating prosthetic groundwater and microbial inoculum misce bene in the cell body, help improving the microbial inoculum to the degradation efficiency of petroleum hydrocarbon, thereby improve the remediation efficiency of petroleum hydrocarbon pollution groundwater.

Optionally, the driving mechanism includes a sealing shell and a driving impeller, two ends of the sealing shell are communicated with the water inlet pipe, the driving impeller is arranged in the sealing shell, the driving impeller is rotatably connected with the sealing shell through a rotating shaft, the rotating shaft is arranged along the width direction of the tank body, one end of the rotating shaft is rotatably connected with the inner wall of the sealing shell, the other end of the rotating shaft penetrates out of the sealing shell and is provided with a first bevel gear, the mixing mechanism includes a fixing frame, the fixing frame is arranged on the mounting frame, the rotating shaft is rotatably connected with the fixing frame, two ends of the first bevel gear are simultaneously meshed with a second bevel gear and a third bevel gear, the tooth surface of the second bevel gear is arranged downwards, the tooth surface of the third bevel gear is arranged upwards, the transmission shaft is coaxially and fixedly arranged on the second bevel gear, the lower end of the third bevel gear is coaxially and fixedly provided with a transmission sleeve, the transmission sleeve is arranged on the fixing frame in a penetrating manner, the upper end of the transmission shaft is rotatably connected with the fixing frame, the lower end of the transmission sleeve penetrates out of the transmission sleeve, a side wall bottom fixing sleeve of the transmission sleeve is fixedly provided with a first impeller fixing sleeve, and a side wall fixing sleeve, a side wall bottom of the transmission shaft is provided with a second impeller fixing sleeve.

By adopting the technical scheme, when groundwater to be repaired is introduced into the water inlet pipe and passes through the sealing shell, water flow drives the driving impeller to rotate, the driving impeller drives the rotating shaft to rotate, the rotating shaft drives the first bevel gear to rotate, the first bevel gear simultaneously drives the second bevel gear and the third bevel gear to rotate, the second bevel gear drives the transmission shaft to rotate, the transmission shaft drives the second impeller to rotate, the third bevel gear drives the transmission sleeve to rotate, the transmission sleeve drives the first impeller to rotate, the rotation directions of the second bevel gear and the third bevel gear are opposite, so that the rotation directions of the first impeller and the second impeller are opposite, coaxial bidirectional stirring of the groundwater to be repaired in the tank is realized, the disturbance effect on contents in the tank is improved, on one hand, the groundwater to be repaired and the microbial inoculum are uniformly mixed, the degradation efficiency of petroleum hydrocarbon is improved, on the other hand, the dissolved oxygen rate in the groundwater to be repaired in the tank can be improved, the degradation capacity of the microbial inoculum and the activity of degradation enzyme generated by the microbial inoculum can be improved, and the remediation efficiency of the groundwater polluted by petroleum hydrocarbon is further improved.

Optionally, the stirring pipe is connected with the microbial inoculum throwing-in bin in a rotating mode, a worm wheel is coaxially fixed on the stirring pipe, a sliding block is arranged on the bottom side of the microbial inoculum throwing-in bin, a lead screw is arranged on the installation frame along the length direction of the lead screw, the two ends of the lead screw are connected with the installation frame in a rotating mode, the lead screw penetrates out of the sliding block and is in threaded connection with the sliding block, and the worm wheel is meshed with the lead screw.

Through adopting above-mentioned technical scheme, when needs slip microbial inoculum put in the storehouse, rotate the lead screw and drive the slider and remove along the length direction of installation frame, simultaneously because worm wheel and lead screw meshing for the lead screw rotates the in-process and drives the worm wheel and rotate, and then drives and mix the pipe and rotate, makes and mix the pipe lower extreme and export the microbial inoculum on one side and rotate the stirring, the microbial inoculum of being convenient for and the groundwater misce bene that treats to restore.

Optionally, the lower end of the stirring pipe is provided with a plurality of arc pipes which are raised upwards, the arc pipes are communicated with the stirring pipe, and the bottom end of the stirring pipe is closed.

By adopting the technical scheme, the stirring pipe is driven to rotate when rotating, and by means of the arc pipe, the microbial inoculum is thrown upwards from the pipe end of the arc pipe in the rotating process of the stirring pipe.

Optionally, the stirring pipe is provided with a folding and unfolding mechanism for driving one ends of the arc pipes far away from the stirring pipe to approach or separate from each other.

Through adopting above-mentioned technical scheme, when the straw exported the microbial inoculum to the cell body, the one end of keeping away from the stirring pipe through the mechanism drive straw of stretching out is close to each other or keeps away from each other for a plurality of straws realize gathering together or the purpose of mutual discrete, thereby make the straw can throw out the microbial inoculum along the direction of difference, make the microbial inoculum that the straw was thrown out distribute more evenly in the cell body.

Optionally, receive and open the mechanism including receiving and opening the silk sleeve, be equipped with reciprocal screw thread section on the lateral wall of stirring pipe, receive and open the silk sleeve and locate reciprocal screw thread section outside and with reciprocal screw thread section adaptation, it has the receipts pole of opening to articulate on the lateral wall of receiving and opening the silk sleeve, the receipts pole of opening is kept away from the one end of receiving and opening the silk sleeve and is articulated with the lateral wall of arc pole, the bottom surface of sliding plate is equipped with the guide bar, receive and open and be equipped with the connecting block on the silk sleeve, the connecting block slides along vertical direction and guide bar and is connected, the arc pipe is close to the one end of stirring pipe and is equipped with the second bellows, the one end that the arc pipe was kept away from to the second bellows is with stirring pipe intercommunication.

Through above-mentioned technical scheme is used to the material, when stirring the pipe and rotating, drive reciprocal screw thread section and rotate, reciprocal screw thread section drives and receives a silk braid and carry out reciprocating motion from top to bottom, receive a silk braid and drive the arc pipe through receiving the expansion rod and make a plurality of arc pipes realize gathering together or the reciprocal action of mutual dispersion, thereby realize when the arc pipe removes, the arc pipe rotates along stirring the circumference of pipe, the arc pipe can constantly change the angle that the microbial inoculum was thrown out simultaneously, can enough increase the range of distribution of microbial inoculum, can make the microbial inoculum distribute more evenly at this within range of distribution again, thereby make the microbial inoculum that the arc pipe was thrown out distribute more evenly in the cell body.

In a second aspect, the present application also provides a method for remediating petroleum hydrocarbon contaminated groundwater comprising the steps of:

s1: sampling a bacterium source: indigenous microorganisms of underground water polluted by petroleum hydrocarbon to be repaired are used as a bacteria source;

s2: constructing a functional flora: inoculating the bacterial source into a culture solution containing petroleum hydrocarbon to perform flora induction domestication, and screening out a functional flora with the highest degradation efficiency;

s3: mixing and fermenting: inoculating the functional flora into a fermentation tank containing petroleum hydrocarbon for mixed fermentation;

s4: preparing a microbial inoculum: collecting thalli in the fermentation liquor, and preparing a microbial inoculum by adopting a physical adsorption method or an embedding method to obtain a functional flora for repairing petroleum hydrocarbon polluted soil and underground water;

s5: degrading the microbial inoculum: and putting the microbial inoculum into the degradation pool, introducing underground water polluted by petroleum hydrocarbon to be repaired into the degradation pool, and degrading the petroleum hydrocarbon in the degradation pool by the microbial inoculum so as to repair the polluted underground water.

By adopting the technical scheme, the petroleum hydrocarbon polluted underground water is repaired from the biodegradation angle, the bacteria source is induced and domesticated by the step of constructing the functional flora, the functional flora with the best degradation effect is screened out, and the microbial inoculum meeting the requirements is finally prepared. The microbial inoculum is put into a degradation pool, so that underground water polluted by petroleum hydrocarbon in the degradation pool can be degraded, and the underground water can be repaired. The engineering quantity is small, the microbial inoculum can be repeatedly utilized for many times, and the investment cost is reduced. The microbial inoculum decomposes petroleum hydrocarbon to generate water and carbon dioxide, and can be separated from underground water through filtration, so that secondary pollution to underground water is not easily caused.

In summary, the present application includes at least one of the following beneficial technical effects:

1. from the biological perspective, the microbial inoculum is utilized to degrade petroleum hydrocarbon, the degraded petroleum hydrocarbon is decomposed into water and carbon dioxide, the possibility of secondary pollution to underground water is reduced, and compared with the construction of a permeable reaction wall at the bottom of the ground, the construction quantity is smaller, the microbial inoculum can be repeatedly utilized, and the input cost can be reduced;

2. when underground water to be restored enters the pool body through the water inlet pipe, the driving mechanism is started to drive the mixing mechanism to operate, and the mixing mechanism is used for mixing and stirring the contents in the pool body, so that the underground water to be restored in the pool body is uniformly mixed with the microbial inoculum, the degradation efficiency of the microbial inoculum on petroleum hydrocarbon is improved, and the restoration efficiency of the underground water polluted by the petroleum hydrocarbon is improved;

3. due to the arrangement of the arc-shaped pipe, the microbial inoculum is thrown upwards from the pipe end of the arc-shaped pipe in the rotation process of the stirring pipe, and the contact time of the microbial inoculum and petroleum hydrocarbon can be reduced after the microbial inoculum is concentrated on the surface of underground water, so that the degradation efficiency of the petroleum hydrocarbon is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a degradation tank embodying the embodiment of the present application.

Fig. 2 is a schematic structural diagram showing a positional relationship between a delivery port and a microbial agent delivery bin in an embodiment of the present application.

Fig. 3 is a cut-away view of a structure embodying a barrier net and a sealing case in an embodiment of the present application.

Fig. 4 is a schematic structural diagram showing a positional relationship between a microbial agent feeding bin and a sliding plate in the embodiment of the present application.

FIG. 5 is a sectional view showing the relationship between the worm wheel and the lead screw in the embodiment of the present application.

FIG. 6 is a schematic structural diagram of a specific structure of a take-up and pay-off mechanism in an embodiment of the present application

Fig. 7 is a schematic structural view showing a concrete configuration of a mixing mechanism in an embodiment of the present application.

Description of reference numerals: 1. a tank body; 11. a mounting frame; 111. a chute; 112. a lead screw; 12. a slide plate; 121. a butt joint plate; 1211. a dovetail strip; 122. a sliding block; 123. a servo base; 13. a drive source; 2. a water inlet pipe; 3. a water outlet pipe; 31. a water outlet valve; 32. a screen board; 4. a microbial inoculum putting bin; 41. a throwing port; 42. a connecting plate; 421. a cylinder; 43. a stirring pipe; 431. a connecting pipe; 4311. a limiting ring; 4312. a first bellows; 432. a limiting groove; 433. a worm gear; 434. an arc tube; 5. a drive mechanism; 51. sealing the shell; 52. driving the impeller; 521. a rotating shaft; 5211. a first bevel gear; 6. a mixing mechanism; 61. a fixed mount; 62. a second bevel gear; 621. a drive shaft; 6211. a second impeller; 63. a third bevel gear; 631. a drive sleeve; 6311. a first impeller; 7. a folding and unfolding mechanism; 71. rolling and stretching the wire sleeve; 711. a tension rod is retracted; 712. connecting blocks; 7121. a dovetail block; 72. a reciprocating threaded section; 73. a guide bar; 731. a guide groove; 74. a second bellows.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses degradation pond of petroleum hydrocarbon polluted groundwater, refer to FIG. 1, a degradation pond of petroleum hydrocarbon polluted groundwater, including cell body 1, fixed intake pipe 2 of wearing to be equipped with on the lateral wall of cell body 1, intake pipe 2 sets up along the length direction of cell body 1, and the output of intake pipe 2 is buckled downwards and is extended to reduce to wait to restore groundwater and let in cell body 1 and take place to strike and spill the possibility of cell body 1 with the inner wall of cell body 1. The bottom end of the side wall of the tank body 1 is fixedly communicated with a water outlet pipe 3, and the water outlet pipe 3 is provided with a water outlet valve 31. Underground water polluted by petroleum hydrocarbon is led into the tank body 1 from the water inlet pipe 2 for degradation, and the degraded underground water is discharged from the water outlet pipe 3.

Referring to fig. 1 and 2, the upper end of cell body 1 is fixed with one and is rectangular installation frame 11, and installation frame 11 sets up along the length direction of cell body 1, installs the microbial inoculum input bin 4 that slides along 11 length direction of installation frame on the installation frame 11, and the microbial inoculum that is used for degrading petroleum hydrocarbon is held in the microbial inoculum input bin 4, and the bottom of microbial inoculum input bin 4 is equipped with input mouth 41. After letting in the groundwater that the petroleum hydrocarbon pollutes in cell body 1, pour into the gathering with the microbial inoculum prepared and put in the storehouse, and put in the microbial inoculum and put in 4 interior poured-in water of storehouse and make the microbial inoculum flow in cell body 1 from putting in mouth 41 more easily along with rivers, meanwhile, the microbial inoculum is put in the length direction of storehouse 4 along cell body 1 and is slided, drive the microbial inoculum and slide along the length direction of cell body 1, thereby make the microbial inoculum input volume of each department in the cell body 1 more even, the degradation efficiency of petroleum hydrocarbon has been improved.

Referring to fig. 3, in order to reduce the occurrence of the situation that the microbial inoculum is discharged from the water outlet pipe 3, a baffle screen plate 32 is fixed at an opening of one end of the water outlet pipe 3 close to the tank body 1.

Referring to fig. 1 and 2, two sides of the long side of the mounting frame 11 away from each other are respectively provided with a dovetail-shaped sliding groove 111, the mounting frame 11 is connected with a sliding plate 12 in a sliding manner, and the sliding plate 12 is horizontally arranged and slides along the length direction of the mounting frame 11. Abutting plates 121 are vertically and integrally fixed to the sliding plate 12 along two edges of the tank body 1 in the width direction, a dovetail strip 1211 is fixed to each of the opposite sides of the lower edges of the two abutting plates 121, and the dovetail strips 1211 are matched with and inserted into the sliding grooves 111.

Referring to fig. 1 and 4, a square sliding block 122 is fixed on the bottom surface of the sliding plate 12, and the microbial inoculum throwing bin 4 is placed on the sliding plate 12. Install lead screw 112 along self length direction on the installation frame 11, the both ends of lead screw 112 are connected with the both ends inside wall rotation of installation frame 11, lead screw 112 run through sliding block 122 and with sliding block 122 threaded connection. A driving source 13 is fixedly installed on one side of the tank body 1 in the length direction, in this embodiment, the driving source 13 is a motor, and one end of the screw 112 close to the driving source 13 penetrates through the side wall of the installation frame 11 and is coaxially fixed with the output end of the driving source 13.

Referring to fig. 2, the bottom edge of one side of the microbial inoculum release bin 4 close to the release port 41 is rotatably connected to the sliding plate 12, so that one side of the microbial inoculum release bin 4 far away from the release port 41 can be turned upwards. When the microbial inoculum is required to be output in the microbial inoculum feeding bin, the microbial inoculum feeding bin can be rotated to ensure that the height of one side of the microbial inoculum feeding bin close to the feeding port 41 is lower, so that the microbial inoculum in the microbial inoculum feeding bin is output more thoroughly, and the microbial inoculum residue in the microbial inoculum feeding bin 4 is reduced.

Referring to fig. 2 and 4, a connecting plate 42 is fixed on one side of the microbial inoculum throwing bin 4 away from the throwing port 41, an air cylinder 421 is installed on the connecting plate 42, the output end of the air cylinder 421 is hinged to the connecting plate 42, a follow-up base 123 is connected to the sliding plate 12 in a sliding manner along the length direction of the sliding plate, and one end of the air cylinder 421 away from the output end is hinged to the follow-up base 123. So, start cylinder 421, the piston rod extension of cylinder 421 puts in the microbial inoculum one side of storehouse 4 keeping away from the dog-house and raises, realizes putting in the purpose of storehouse 4 slopes to the microbial inoculum, and the microbial inoculum of being convenient for is put in storehouse 4 output microbial inoculum.

Referring to fig. 2 and 5, the bottom of the microbial agent throwing bin 4 is provided with a stirring pipe 43, the top end of the stirring pipe 43 is provided with a connecting pipe 431, the side wall of the lower end of the connecting pipe 431 is fixed with a limiting ring 4311, the connecting pipe 431 is inserted into the stirring pipe 43 and is rotatably connected with the stirring pipe 43, and the inner wall of the stirring pipe 43 is provided with a limiting groove 432 matched with the limiting ring 4311. A first corrugated pipe 4312 is fixed at the upper end of the connecting pipe 431, and one end of the first corrugated pipe 4312, which is far away from the stirring pipe 43, is communicated with the feeding port 41, so that the use of the stirring pipe 43 is not affected when the microbial inoculum feeding bin 4 is turned over.

Referring to fig. 4 and 5, the outside of the stirring pipe 43 is fixedly sleeved with a worm wheel 433, the worm wheel 433 is meshed with the lead screw 112, so that the lead screw 112 rotates to drive the stirring pipe 43 to move and output the microbial inoculum and rotate and stir the microbial inoculum at the same time, and the microbial inoculum and the groundwater to be repaired can be uniformly mixed.

Referring to fig. 4, the lower end of the stirring pipe 43 is fixedly communicated with a plurality of arc pipes 434 which are raised upwards, the arc pipes 434 are uniformly arranged along the circumferential direction of the stirring pipe 43, and the bottom end of the stirring pipe 43 is closed. When the stirring pipe 43 rotates, the output end of the arc pipe 434 is located below the liquid level of the pool body 1, so that the situation that the microbial inoculum is influenced by external air flow and drifts out of the pool body 1 can be reduced, and the loss caused by putting the microbial inoculum in the pool body is reduced. When the stirring pipe 43 rotates, the arc pipe 434 is driven to rotate, and by means of the arc pipe 434, the microbial inoculum is thrown upwards from the pipe end of the arc pipe 434 in the rotating process of the stirring pipe 43.

Referring to fig. 4 and 6, the stirring pipe 43 is provided with a tension mechanism 7 for driving one ends of the arc pipes 434 away from the stirring pipe 43 to approach or separate from each other, the tension mechanism 7 includes a tension screw sleeve 71, a reciprocating screw thread section 72 is provided on an outer side wall of the stirring pipe 43, and the tension screw sleeve 71 is sleeved on an outer side of the reciprocating screw thread section 72 and is adapted to the reciprocating screw thread section 72. The side wall of the tension and contraction wire sleeve 71 is hinged with a tension and contraction rod 711, and one end, far away from the tension and contraction wire sleeve 71, of the tension and contraction rod 711 is hinged with the upper end of the side wall of the arc-shaped rod. The bottom surface of board 12 that slides is fixed with the guide bar 73 of vertical setting, be fixed with connecting block 712 on receiving and expanding the lateral wall of silk braid 71, connecting block 712 is kept away from the one end of receiving and expanding silk braid 71 and is fixed with forked tail piece 7121, guide bar 73 has seted up guide way 731 towards one side of connecting block 712, guide way 731 sets up and with forked tail piece 7121 looks adaptation along vertical direction, forked tail piece 7121 imbeds guide way 731 and slides with the inner wall of guide way 731 and be connected. The end of the arc pipe 434 close to the stirring pipe 43 is fixed with a second corrugated pipe 74, and the end of the second corrugated pipe 74 far from the arc pipe 434 is fixedly communicated with the bottom end of the side wall of the stirring pipe 43.

When the stirring pipe 43 rotates, the reciprocating thread section 72 is driven to rotate, the reciprocating thread section 72 drives the stretching and contracting wire sleeve 71 to reciprocate up and down, the stretching and contracting wire sleeve 71 drives the arc pipes 434 through the stretching and contracting rod 711 to enable the arc pipes 434 to realize reciprocating actions of mutual gathering or mutual dispersion, so that the arc pipes 434 are in a circulating form of one-by-one combination, the arc pipes 434 rotate along the circumferential direction of the stirring pipe 43 when moving, and meanwhile, the arc pipes 434 can continuously change the throwing angle of the microbial inoculum, so that the spreading range of the microbial inoculum can be enlarged, the microbial inoculum can be more uniformly distributed in the spreading range, and the microbial inoculum thrown by the arc pipes 434 is more uniformly distributed in the pool body 1.

Referring to fig. 1, a driving mechanism 5 is arranged on the water inlet pipe 2, the driving mechanism 5 is connected with a mixing mechanism 6, and the mixing mechanism 6 is arranged in the tank body 1. When groundwater to be repaired enters the pool body 1 through the water inlet pipe 2, the driving mechanism 5 is started to drive the mixing mechanism 6 to operate, and the mixing mechanism 6 mixes and stirs the contents in the pool body 1, so that the groundwater to be repaired in the pool body 1 is uniformly mixed with the microbial inoculum, the degradation efficiency of the microbial inoculum on petroleum hydrocarbon is improved, and the remediation efficiency of the groundwater polluted by the petroleum hydrocarbon is improved.

Referring to fig. 3 and 7, the driving mechanism 5 includes a sealing housing 51 and a driving impeller 52, both ends of the sealing housing 51 are communicated with the water inlet pipe 2, the driving impeller 52 is installed in the sealing housing 51 and the driving impeller 52 is rotatably connected with the sealing housing 51 through a rotating shaft 521, the rotating shaft 521 is arranged along the width direction of the tank body 1, one end of the rotating shaft 521 is rotatably connected with the inner wall of the sealing housing 51, and the other end penetrates through the sealing housing 51 and is fixed with a first bevel gear 5211. The mixing mechanism 6 includes a fixing frame 61 fixed to the lower end of the mounting frame 11, and a rotating shaft 521 penetrates the fixing frame 61 and is rotatably connected to the fixing frame 61. Both ends of the first bevel gear 5211 are engaged with the second bevel gear 62 and the third bevel gear 63 at the same time with the tooth surface of the second bevel gear 62 disposed downward and the tooth surface of the third bevel gear 63 disposed upward. The transmission shaft 621 is coaxially and fixedly arranged on the second bevel gear 62 in a penetrating manner, the transmission sleeve 631 is coaxially and fixedly arranged at the lower end of the third bevel gear 63, the transmission sleeve 631 is arranged on the fixing frame 61 in a penetrating manner, and the transmission sleeve 631 is rotatably connected with the lower end of the fixing frame 61. The upper end of transmission shaft 621 is connected with the upper end of mount 61 is rotated, and the transmission sleeve 631 is worn out to the lower extreme, and the fixed cover in lateral wall bottom of transmission sleeve 631 is equipped with first impeller 6311, and the fixed cover in lateral wall bottom of transmission shaft 621 is equipped with second impeller 6211.

When groundwater to be repaired is introduced into a water inlet pipe 2 and passes through a sealing shell 51, water flow drives a driving impeller 52 to rotate, the driving impeller 52 drives a rotating shaft 521 to rotate, the rotating shaft 521 drives a first bevel gear 5211 to rotate, the first bevel gear 5211 simultaneously drives a second bevel gear 62 and a third bevel gear 63 to rotate, the second bevel gear 62 drives a transmission shaft 621 to rotate, the transmission shaft 621 drives a second impeller 6211 to rotate, the third bevel gear 63 drives a transmission sleeve 631 to rotate, the transmission sleeve 631 drives the first impeller 6311 to rotate, the rotation directions of the second bevel gear 62 and the third bevel gear 63 are opposite, so that the rotation directions of the first impeller 6311 and the second impeller 6211 are opposite, coaxial bidirectional stirring of groundwater to be repaired in a tank body 1 is realized, the disturbance effect of contents in the tank body 1 is improved, the groundwater to be repaired is conveniently and a microbial inoculum are uniformly mixed, the degradation efficiency of petroleum hydrocarbon is improved, the dissolved oxygen rate in groundwater to be repaired in the tank body 1 is improved, the degradation capability of the microbial inoculum and the activity of degradation enzyme generated by the microbial inoculum can be improved, and the remediation efficiency of petroleum-polluted groundwater can be improved.

The implementation principle of the degradation pool for petroleum hydrocarbon polluted underground water in the embodiment of the application is as follows: when the degradation tank is used, underground water to be repaired is introduced into the tank body 1 through the water inlet pipe 2, and the prepared microbial inoculum for degrading petroleum hydrocarbon is poured into the microbial inoculum feeding bin 4. Then, the driving source 13 is started, the lead screw is driven to rotate, the lead screw 112 drives the sliding plate 12 to move and simultaneously drives the worm wheel 433 to rotate, the sliding plate 12 drives the microbial inoculum throwing bin 4 to move, the worm wheel 433 drives the stirring pipe 43 to rotate, the stirring pipe 43 drives the arc pipe 434 to rotate, and further the lead screw 112 drives the arc pipe 434 to move and output microbial inoculum and simultaneously rotate and stir when rotating, so that the arc pipe 434 moves and simultaneously rotates along the circumferential direction of the stirring pipe 43, meanwhile, the angle thrown by the microbial inoculum can be continuously changed by the arc pipe 434, the spreading range of the microbial inoculum can be increased, the microbial inoculum can be more uniformly distributed in the spreading range, the microbial inoculum thrown by the arc pipe 434 is more uniformly distributed in the cell body 1, and the degradation effect of underground water to be repaired in the cell body 1 is improved.

When groundwater to be repaired is introduced into a water inlet pipe 2 and passes through a sealing shell 51, water flow drives a driving impeller 52 to rotate, the driving impeller 52 drives a rotating shaft 521 to rotate, the rotating shaft 521 drives a first bevel gear 5211 to rotate, the first bevel gear 5211 simultaneously drives a second bevel gear 62 and a third bevel gear 63 to rotate, the second bevel gear 62 drives a transmission shaft 621 to rotate, the transmission shaft 621 drives a second bevel gear 6211 to rotate, the third bevel gear 63 drives a transmission sleeve 631 to rotate, the transmission sleeve 631 drives a first impeller 6311 to rotate, the rotation directions of the second bevel gear 62 and the third bevel gear 63 are opposite, the rotation directions of the first impeller 6311 and the second impeller 6211 are opposite, coaxial bidirectional stirring of groundwater to be repaired in a cell body 1 is achieved, the disturbance effect of contents in the cell body 1 is improved, on one hand, the groundwater to be repaired is conveniently and uniformly mixed with a bactericide, the degradation efficiency of petroleum hydrocarbon is improved, on the other hand, the dissolved oxygen rate of groundwater to be repaired in the cell body 1 can be improved, the degradation capability of the bactericide and the activity of degradation enzyme generated by the bactericide can be improved, and further, the repair efficiency of petroleum-polluted groundwater is improved.

The embodiment of the application also discloses a method for restoring the underground water polluted by petroleum hydrocarbon, which comprises the following steps:

the method is mainly characterized in that petroleum hydrocarbon polluted underground water to be repaired is selected as a bacteria source sampling point, and the underground water contains a large amount of indigenous microorganisms, is rich in variety, has certain tolerance and degradation capacity on petroleum hydrocarbon, and is easy to culture in an enhanced mode.

S2: constructing a functional flora: inoculating a bacterial source into a culture solution containing petroleum hydrocarbon to perform flora induction domestication, and screening out a functional flora with the highest degradation efficiency;

s5: degrading the microbial inoculum: and (3) putting a microbial inoculum into the degradation pool, introducing underground water polluted by the petroleum hydrocarbon to be repaired into the degradation pool, and degrading the petroleum hydrocarbon in the degradation pool by using the microbial inoculum so as to repair the polluted underground water.

The implementation principle of the method for restoring the underground water polluted by the petroleum hydrocarbon in the embodiment of the application is as follows: the method is characterized in that petroleum hydrocarbon polluted underground water is repaired from the biodegradation angle, the bacterial source is induced and domesticated through the step of constructing functional flora, the functional flora with the best degradation effect is screened out, and the microbial inoculum meeting the requirements is finally prepared. The microbial inoculum is put into a degradation pool, so that underground water polluted by petroleum hydrocarbon in the degradation pool can be degraded, and the underground water can be repaired. Compared with the method that the permeable reactive barrier is constructed at the bottom of the ground to repair the underground water, the method has the advantages that the engineering quantity is small, the microbial inoculum can be repeatedly utilized, and the investment cost is reduced. The microbial inoculum decomposes petroleum hydrocarbon to generate water and carbon dioxide, and can be separated from underground water through filtration, so that secondary pollution to underground water is not easily caused.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A degradation pond for petroleum hydrocarbon polluted underground water is characterized in that: including cell body (1), the up end of cell body (1) is equipped with installation frame (11), the length direction setting of cell body (1) is followed in installation frame (11), it puts in storehouse (4) to be equipped with the microbial inoculum that slides along installation frame (11) length direction on installation frame (11), the microbial inoculum is put in and is equipped with the microbial inoculum that is used for degrading petroleum hydrocarbon in storehouse (4), the bottom that the microbial inoculum put in storehouse (4) is equipped with puts in mouth (41).

2. The degradation tank for petroleum hydrocarbon polluted groundwater according to claim 1, wherein: the bottom that storehouse (4) was put in to the microbial inoculum is equipped with stirs pipe (43), the upper end and the microbial inoculum of stirring pipe (43) are put in storehouse (4) intercommunication, and the liquid level downside of cell body (1) is located to the lower extreme.

3. A degradation pool for petroleum hydrocarbon contaminated groundwater according to claim 2, wherein: the bottom that the feed bin was thrown to the microbial inoculum is equipped with slide plate (12), slide plate (12) and microbial inoculum are thrown in storehouse (4) and are close to one side bottom edge rotation connection of throwing in mouthful (41), one side that the mouth (41) was put in keeping away from in microbial inoculum is thrown in storehouse (4) and is equipped with cylinder (421), slide plate (12) go up to slide along self length direction and be connected with follow-up base (123), cylinder (421) are articulated with follow-up base (123).

4. A degradation pool for petroleum hydrocarbon contaminated groundwater according to claim 1, wherein: be equipped with inlet tube (2) on cell body (1), be equipped with actuating mechanism (5) on inlet tube (2), actuating mechanism (5) are connected with mixing mechanism (6), mixing mechanism (6) are located in cell body (1).

5. The degradation tank of petroleum hydrocarbon polluted groundwater as claimed in claim 4, wherein: the driving mechanism (5) comprises a sealing shell (51) and a driving impeller (52), two ends of the sealing shell (51) are communicated with the water inlet pipe (2), the driving impeller (52) is arranged in the sealing shell (51), the driving impeller (52) is rotatably connected with the sealing shell (51) through a rotating shaft (521), the rotating shaft (521) is arranged along the width direction of the tank body (1), one end of the rotating shaft (521) is rotatably connected with the inner wall of the sealing shell (51), the other end of the rotating shaft penetrates through the sealing shell (51) and is provided with a first bevel gear (5211), the mixing mechanism (6) comprises a fixing frame (61), the fixing frame (61) is arranged on the mounting frame (11), the rotating shaft (521) is rotatably connected with the fixing frame (61), two ends of the first bevel gear (5211) are simultaneously engaged with a second bevel gear (62) and a third bevel gear (63), the tooth surface of the second bevel gear (62) is arranged downwards, the tooth surface of the third bevel gear (63) is arranged upwards, the gear (62) is coaxially fixed with a transmission shaft (631), the lower end of the third bevel gear (631) is coaxially penetrated through the fixing frame (621), and the transmission shaft (631), the upper end and the mount (61) of transmission shaft (621) rotate to be connected, and transmission sleeve pipe (631) is worn out to the lower extreme, the fixed cover in lateral wall bottom of transmission sleeve pipe (631) is equipped with first impeller (6311), the fixed cover in lateral wall bottom of transmission shaft (621) is equipped with second impeller (6211).

6. A degradation pool for petroleum hydrocarbon contaminated groundwater according to claim 3, wherein: stirring pipe (43) and microbial inoculum are put in storehouse (4) and are rotated and be connected, coaxial fixed with worm wheel (433) on stirring pipe (43), the bottom side that storehouse (4) was put in to the microbial inoculum is equipped with skid block (122), be equipped with lead screw (112) along self length direction on installation frame (11), the both ends and the installation frame (11) of lead screw (112) are rotated and are connected, skid block (122) are worn out and skid block (122) threaded connection is worn out in lead screw (112), worm wheel (433) and lead screw (112) meshing.

7. The degradation tank for petroleum hydrocarbon polluted groundwater according to claim 6, wherein: the lower end of the stirring pipe (43) is provided with a plurality of arc pipes (434) which are raised upwards, the arc pipes (434) are communicated with the stirring pipe (43), and the bottom end of the stirring pipe (43) is closed.

8. A degradation pool for petroleum hydrocarbon contaminated groundwater according to claim 7, wherein: the stirring pipe (43) is provided with a tension mechanism (7) for driving one ends of the arc pipes (434) far away from the stirring pipe (43) to mutually approach or mutually separate.

9. A degradation pool for petroleum hydrocarbon contaminated groundwater according to claim 8, wherein: receive and open mechanism (7) including receiving and opening silk sleeve (71), be equipped with reciprocal screw thread section (72) on the lateral wall of stirring pipe (43), receive and open silk sleeve (71) cover locate reciprocal screw thread section (72) outside and with reciprocal screw thread section (72) looks adaptation, it has receipts stretch-out pole (711) to articulate on the lateral wall of receiving and opening silk sleeve (71), it is articulated with the lateral wall of arc pole to receive stretch-out pole (711) to keep away from the one end of receiving and opening silk sleeve (71), the bottom surface of sliding plate (12) is equipped with guide bar (73), it is equipped with connecting block (712) on receiving and opening silk sleeve (71), connecting block (712) are slided with guide bar (73) along vertical direction and are connected, arc pipe (434) are close to the one end of stirring pipe (43) and are equipped with second bellows (74), the one end that arc pipe (434) was kept away from in second bellows (74) is linked together with stirring pipe (43).

10. A method for remediating petroleum hydrocarbon contaminated groundwater, comprising the steps of:

s2: constructing a functional flora: inoculating a bacterial source into a culture solution containing petroleum hydrocarbon to perform flora induction acclimation, and screening out a functional flora with the highest degradation efficiency;

s5: degrading the microbial inoculum: the method comprises the steps of putting a microbial inoculum into a degradation pool according to any one of claims 1 to 9, introducing underground water polluted by petroleum hydrocarbon to be repaired into the degradation pool, and degrading the petroleum hydrocarbon in the degradation pool by the microbial inoculum so as to repair the polluted underground water.