CN214115279U - Sewage treatment system of underground pollution source - Google Patents
Sewage treatment system of underground pollution source Download PDFInfo
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- CN214115279U CN214115279U CN202022930689.1U CN202022930689U CN214115279U CN 214115279 U CN214115279 U CN 214115279U CN 202022930689 U CN202022930689 U CN 202022930689U CN 214115279 U CN214115279 U CN 214115279U
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Abstract
The utility model discloses a sewage treatment system of an underground pollution source, which comprises a water well arranged on the soil of the pollution source, and a water pump is arranged in the water well; a sewage adding pipe of the Fenton reaction tank is communicated with a water pump; a water inlet pipe of the adjusting tank is communicated with a water outlet pipe of the Fenton reaction tank; the sewage outlet of the adjusting tank is communicated with the sewage inlet of the primary sedimentation tank, the sewage outlet of the primary sedimentation tank is communicated with the sewage inlet of the biochemical tank, the sewage outlet of the biochemical tank is communicated with the sewage inlet of the secondary sedimentation tank, the sewage outlet of the secondary sedimentation tank is communicated with the sewage inlet of the tertiary sedimentation tank, and the sewage outlet of the tertiary sedimentation tank is communicated with the outside; the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are provided with sludge discharge pipelines communicated with the sludge tank; the sludge tank is communicated with the sludge adjusting tank, the sludge adjusting tank is communicated with the plate type filter press, and filtrate generated by the plate type filter press flows into the blending tank and the primary sedimentation tank. The sewage treatment system can improve the treatment speed of underground sewage and can also treat pollutants which are difficult to naturally degrade.
Description
Technical Field
The utility model relates to a sewage treatment system of underground pollution source belongs to sewage treatment technical field.
Background
At present, the pollution of underground water of seriously polluted soil is relatively serious, especially for some sites with chemical accidents, the pollution of leaked chemical substances to the soil is very serious, and although the leaked chemical substances on the surface of the soil can be effectively treated, the chemical substances which permeate into the soil can cause serious pollution to the soil and the underground water. At present, the underground sewage is treated by a natural purification mode generally, pollutants in soil enter an underground water layer once and again by long-time natural purification and utilizing the impact of rainwater, then the sewage is gradually washed into a river by utilizing the flow of underground water, finally the sewage decomposes excessive pollutants such as COD (chemical oxygen demand) and the like in the river, and the pollutants in the soil are washed and enter the underground water by each washing of the rainwater. However, the time for groundwater to flow into a nearby river is very long, so the natural purification method has long purification time, and the natural purification method is difficult to complete for some pollutants which are difficult to naturally degrade.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the sewage treatment system of the underground pollution source can not only improve the treatment speed of underground sewage, but also treat pollutants which are difficult to naturally degrade.
In order to solve the technical problem, the technical scheme of the utility model is that: a sewage treatment system for an underground pollution source comprises
The water pump is arranged in the water well;
a Fenton reaction tank, wherein the Fenton reaction tank is provided with a sewage adding pipe, a ferrous sulfate adding pipe, a sulfuric acid adding pipe, a hydrogen peroxide adding pipe and a drain pipe, wherein the ferrous sulfate adding pipe and the sulfuric acid adding pipe are positioned at the lower part of the Fenton reaction tank, the sewage adding pipe is positioned above the ferrous sulfate adding pipe and the sulfuric acid adding pipe, the hydrogen peroxide adding pipe is positioned above the sewage adding pipe, the drain pipe is positioned above the hydrogen peroxide adding pipe, the sewage adding pipe comprises a sewage adding main pipe horizontally extending to the interior of the Fenton reaction tank, the outer end of the sewage adding main pipe is connected with an output port of the water pump through a pipeline, the inner end of the sewage adding main pipe is connected with sewage adding branch pipes which are horizontally arranged and distributed in a crossed and circumferential mode, and a row of water outlet nozzles are arranged on the anticlockwise side or the clockwise side of each sewage adding branch pipe; the ferrous sulfate adding pipe, the sulfuric acid adding pipe and the hydrogen peroxide adding pipe are respectively communicated with a ferrous sulfate storage tank, a sulfuric acid storage tank and a hydrogen peroxide storage tank through pipelines;
the adjusting tank is connected with a plurality of water inlet pipes, each water inlet pipe is provided with a flow adjusting valve, and one water inlet pipe is communicated with a drain pipe of the Fenton reaction tank; the sewage outlet of the adjusting tank is communicated with the sewage inlet of the primary sedimentation tank, the sewage outlet of the primary sedimentation tank is communicated with the sewage inlet of the biochemical tank, the sewage outlet of the biochemical tank is communicated with the sewage inlet of the secondary sedimentation tank, the sewage outlet of the secondary sedimentation tank is communicated with the sewage inlet of the tertiary sedimentation tank, and the sewage outlet of the tertiary sedimentation tank is communicated with the outside;
the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are respectively provided with a first sludge discharge pipeline, a second sludge discharge pipeline and a third sludge discharge pipeline which are communicated with the sludge tank, a sludge return pipeline for returning activated sludge is also arranged between the bottom of the secondary sedimentation tank and the biochemical tank, and the first sludge discharge pipeline, the second sludge discharge pipeline, the third sludge discharge pipeline and the sludge return pipeline are respectively provided with a conveying pump;
the sludge tank is communicated with the sludge adjusting tank, the sludge adjusting tank is communicated with the plate-type filter press, filtrate generated by the plate-type filter press is respectively communicated with a regulating liquid inlet and a primary sedimentation tank inlet of the blending tank through a regulating pipeline and a return pipeline, and the bottom of the blending tank is communicated with the sludge tank through a fourth sludge discharge pipeline.
Preferably, the water outlet nozzles on the sewage adding branch pipes are inclined downwards, and the inclined angle is 3-5 degrees.
Preferably, an upper separating ring plate and a lower separating ring plate are arranged on the inner wall of the Fenton reaction tank in the height direction, and the upper separating ring plate is arranged between a drain pipe and a hydrogen peroxide adding pipe of the Fenton reaction tank.
Wherein preferably, still be provided with the circulating line on the fenton retort, the entry of circulating line sets up in the upper portion of fenton retort, the export of circulating line sets up between last separating ring board and the lower separating ring board, is provided with the circulating pump on the circulating line.
Preferably, the drain pipe of the fenton reaction tank is connected with a drain branch pipe, and the other end of the drain branch pipe extends to the soil surface or the soil inside of the pollution source soil.
Wherein, preferably, the pollution source soil comprises a high-concentration polluted area and a low-concentration polluted area, and the number of water wells in the high-concentration polluted area is greater than that in the low-concentration polluted area.
Wherein preferably, the other end of the drainage branch pipe extends to the soil surface or the soil inside of the high-concentration polluted area.
After the technical scheme is adopted, the utility model discloses an effect is: the sewage treatment system has the advantages that the water well is formed in the pollution source soil, the water pump is placed in the water well, sewage in the water well is pumped out by the water pump, after the sewage is pumped out, underground water around the water well can be continuously supplemented into the water well, clean underground water around the pollution source soil flows into the water well in an accelerated mode, pollutants in the soil can be continuously and quickly washed away, the sewage is pumped out and then directly sent into the Fenton reaction tank, ferrous sulfate and sulfuric acid are added from the bottom of the Fenton reaction tank, rotational flow can be generated when the sewage is added into the Fenton reaction tank, the stirring effect is achieved, hydrogen peroxide is added into the middle of the Fenton reaction tank, the Fenton reaction is achieved in an acidic environment, the pollutants in the sewage are decomposed due to strong oxidation, macromolecules are oxidized into micromolecules to oxidize carbon dioxide and water, meanwhile, FeSO4 can be oxidized into 3-valent iron ions, which has a certain flocculation effect, and the 3-valent iron ions become ferric hydroxide, which has a certain net catching effect, thereby achieving the purpose of water treatment. The continuous stirring is carried out due to the continuous addition of the sewage in the reaction process, so that the Fenton reaction is very thorough, the sewage after the Fenton reaction can be sent into a regulating tank to be regulated and mixed with other sewage, then the mixed sewage is sequentially treated by a primary settling tank, a biochemical tank, a secondary settling tank and a tertiary settling tank, finally the treated water meeting the discharge standard is discharged into a river, the sludge in the primary settling tank, the secondary settling tank and the tertiary settling tank flows into a sludge tank, then the sludge in the sludge tank is modulated by the sludge regulating tank and then is sent into a filter press for filter pressing, the filtrate obtained by filter pressing is collected and treated again, thus the sewage treatment system can actively pump the underground sewage in the pollution source soil for the Fenton reaction, the Fenton reaction is carried out in a Fenton reaction tank, and therefore, the Fenton reaction tank can be conveniently moved to the site of the pollution source soil, then the pollutants which are difficult to self-clean in the natural environment can be treated by the strong oxidation of Fenton reaction, and meanwhile, the treatment efficiency is higher, the speed is high, and the sewage treatment effect is better.
The water outlet nozzles on the sewage adding branch pipes are inclined downwards, and the inclined angle is 3-5 degrees, so that the water outlet angle of the sewage adding branch pipes is slightly inclined downwards, rotational flow and impact are more easily generated, and the stirring effect is improved;
and because the upper separation ring plate and the lower separation ring plate are arranged on the inner wall of the Fenton reaction tank in the height direction, the upper separation ring plate is arranged between the drain pipe and the hydrogen peroxide adding pipe of the Fenton reaction tank, and the flowing speed of the sewage from bottom to top can be effectively slowed down by utilizing the separation of the upper separation ring plate and the lower separation ring plate, so that the sewage is fully subjected to the Fenton reaction, the reaction time is sufficient, and the sewage treatment effect is better.
And because the Fenton reaction tank is also provided with a circulating pipeline, the inlet of the circulating pipeline is arranged at the upper part of the Fenton reaction tank, the outlet of the circulating pipeline is arranged between the upper separating ring plate and the lower separating ring plate, and the circulating pipeline is provided with a circulating pump, so that sewage can flow back by utilizing the circulating pipeline, the time of the Fenton reaction is further prolonged, and the sewage treatment effect is improved.
And because the drain pipe of the Fenton reaction tank is connected with the drain branch pipe, the other end of the drain branch pipe extends to the soil surface or the inside of the soil of the pollution source soil, the treated sewage can be drained to other pollution source soil or the pollution source soil can be gathered through the drain branch pipe at the moment when the pollutant content of the sewage is relatively low, particularly in the later stage of sewage treatment, so that the sewage is flushed from top to bottom again, and the treatment effect of the polluted soil is further improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic illustration of corrosion of a source soil according to an embodiment of the present invention;
FIG. 2 is a schematic view of a water well and a water pump;
FIG. 3 is a schematic view of the structure of a Fenton reaction tank;
FIG. 4 is a structural arrangement diagram of a sewage adding pipe and a sewage adding branch pipe;
FIG. 5 is a schematic flow diagram of a biochemical process;
in the drawings: 1. a source of contamination soil; 2. a water well; 3. a water pump; 4. water drainage branch pipes; 5. a drain pipe; 6. a Fenton reaction tank; 7. a ferrous sulfate addition pipe; 8. a ferrous sulfate storage tank; 9. a sulfuric acid addition pipe; 10. a sulfuric acid storage tank; 11. a sewage addition main pipe; 12. adding sewage into branch pipes; 13. a water outlet nozzle; 14. an upper spacer ring plate; 15. a lower divider ring plate; 16. a circulation pipe; 17. a circulation pump; 18. a hydrogen peroxide adding pipe; 19. a hydrogen peroxide storage tank; 20. a water inlet pipe; 21. a water storage tank; 22. a conditioning tank; 23. primary settling tank; 24. a sludge tank; 25. a biochemical tank; 26. secondary sedimentation tank; 27. three settling tanks; 28. a mud return pipeline; 29. a sludge conditioning tank; 30. a plate filter press; 31. a blending tank; 32. a first sludge discharge pipeline; 33. a second sludge discharge pipeline; 34. a third sludge discharge pipeline; 35. and a fourth sludge discharge pipeline.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
As shown in FIGS. 1 to 5, a sewage treatment system for an underground pollution source comprises
The device comprises at least one water well 2 arranged on pollution source soil 1, wherein a water pump 3 is placed in the water well 2; wherein, the pollution source soil 1 can be sampled and tested to obtain the pollutant content of the pollution source soil 1, and finally the number and the spacing distance of the wells 2 can be determined, thereby facilitating the better treatment of the underground sewage.
A Fenton reaction tank 6, wherein the Fenton reaction tank 6 is provided with a sewage adding pipe, a ferrous sulfate adding pipe 7, a sulfuric acid adding pipe 9, a hydrogen peroxide adding pipe 18 and a drain pipe 5, wherein the ferrous sulfate adding pipe 7 and the sulfuric acid adding pipe 9 are positioned at the lower part of the Fenton reaction tank 6, the sewage adding pipe is positioned above the ferrous sulfate adding pipe 7 and the sulfuric acid adding pipe 9, the hydrogen peroxide adding pipe 18 is positioned above the sewage adding pipe, the drain pipe 5 is positioned above the hydrogen peroxide adding pipe 18, the sewage adding pipe comprises a sewage adding main pipe 11 horizontally extending to the interior of the Fenton reaction tank 6, the outer end of the sewage adding main pipe 11 is connected with an output port of the water pump 3 through a pipeline, the inner end of the sewage adding main pipe 11 is connected with sewage adding branch pipes 12 which are horizontally arranged and distributed in a crossed and circumferential mode, and a water discharging nozzle 13 is arranged on the anticlockwise side or the clockwise side of each sewage adding branch pipe 12; the ferrous sulfate adding pipe 7, the sulfuric acid adding pipe 9 and the hydrogen peroxide adding pipe 18 are respectively communicated with a ferrous sulfate storage tank 8, a sulfuric acid storage tank 10 and a hydrogen peroxide storage tank 19 through pipelines;
wherein, the utility model discloses an among the processing system, fenton's reaction is direct to be accomplished in a retort, and consequently, holistic structure is simpler, consequently can be fit for emergent secret sewage treatment, for example to the secret sewage treatment of some chemical industry accident scene, just very practical, can play emergency treatment's effect.
In addition, the sewage treatment system can be used for collecting sewage discharged from the Fenton reaction tank 6 by additionally arranging the water storage tank 21 on the site and then uniformly delivering the sewage to the sewage treatment plant for treatment when the pollutant soil is far away from a sewage inflow pipeline of the sewage treatment plant according to the actual situation. Of course, the treatment can also be directly integrated on site of the soil 1 of the source of pollution.
The system comprises an adjusting tank 22, wherein the adjusting tank 22 is connected with a plurality of water inlet pipes 20, each water inlet pipe 20 is provided with a flow adjusting valve, one water inlet pipe 20 is communicated with a drain pipe 5 of the Fenton reaction tank 6, and other water inlet pipes 20 can be added according to the condition of water resources on site, so that the pollutant concentration of the sewage is adjusted, and the subsequent biochemical treatment is facilitated; a sewage outlet of the adjusting tank 22 is communicated with an inlet of the primary sedimentation tank 23, a sewage outlet of the primary sedimentation tank 23 is communicated with a sewage inlet of the biochemical tank 25, a sewage outlet of the biochemical tank 25 is communicated with a sewage inlet of the secondary sedimentation tank 26, a sewage outlet of the secondary sedimentation tank 26 is communicated with a sewage inlet of the tertiary sedimentation tank 27, and a sewage outlet of the tertiary sedimentation tank 27 is communicated with the outside;
the primary settling tank 23, the secondary settling tank 26 and the tertiary settling tank 27 are respectively provided with a first sludge discharge pipeline 32, a second sludge discharge pipeline 33 and a third sludge discharge pipeline 34 which are communicated with the sludge tank 24, a sludge return pipeline 28 for returning active sludge is also arranged between the bottom of the secondary settling tank 26 and the biochemical tank 25, and the first sludge discharge pipeline 32, the second sludge discharge pipeline 33, the third sludge discharge pipeline 34 and the sludge return pipeline 28 are respectively provided with a conveying pump;
the sludge tank 24 is communicated with a sludge adjusting tank 29, the sludge adjusting tank 29 is communicated with a plate type filter press 30, filtrate generated by the plate type filter press 30 is respectively communicated with an adjusting liquid inlet of a blending tank 31 and an inlet of a primary sedimentation tank 23 through an adjusting pipeline and a return pipeline, and the bottom of the blending tank 31 is communicated with the sludge tank 24 through a fourth sludge discharge pipeline 35.
As shown in FIG. 3, the water outlet nozzle 13 of the sewage adding branch pipe 12 is inclined downwards, and the inclined angle is 3-5 degrees. An upper separating ring plate 14 and a lower separating ring plate 15 are arranged on the inner wall of the Fenton reaction tank 6 in the height direction, and the upper separating ring plate 14 is arranged between the water drainage pipe 5 of the Fenton reaction tank 6 and the hydrogen peroxide adding pipe 18. Still be provided with circulating line 16 on the fenton retort 6, the entry of circulating line 16 sets up in the upper portion of fenton retort 6, the export of circulating line 16 sets up between last separating ring board 14 and lower separating ring board 15, is provided with circulating pump 17 on the circulating line 16. The water discharge pipe 5 of the Fenton reaction tank 6 is connected with a water discharge branch pipe 4, and the other end of the water discharge branch pipe 4 extends to the soil surface or the soil inside of the pollution source soil 1. This drainage is divided and is managed 4 and can be opened in sewage treatment's later stage, can add the water of the pollutant of crossing the end to the soil surface or the soil inside of Source soil 1 like this to from top to bottom impact soil, thereby sewage treatment is more thorough. Preferably, the pollution source soil 1 comprises a high-concentration pollution area and a low-concentration pollution area, the areas are obtained by soil pollutant sampling analysis, and the number of the water wells 2 in the high-concentration pollution area is larger than that in the low-concentration pollution area. The other end of the branch drain pipe 4 extends to the soil surface or the inside of the soil in the high concentration contaminated area.
This sewage treatment system takes out the groundwater that pollutes through the mode that the well drilling was drawn water, then sends into and carries out the fenton reaction in the fenton retort 6, takes out the difficult natural decomposition's in the sewage pollutant, then carries out subsequent biochemical treatment, finally obtains the lower quality of water of pollutant concentration, just so arranges the natural purification more easily in the environment again to satisfy the emergency treatment in some chemical industry accident scene.
The above-mentioned embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all modifications and changes made by the technical solution of the present invention should fall within the protection scope defined by the claims of the present invention on the basis of not departing from the spirit of the present invention.
Claims (7)
1. The utility model provides a sewage treatment system of underground pollution source which characterized in that: comprises that
The water pump is arranged in the water well;
a Fenton reaction tank, wherein the Fenton reaction tank is provided with a sewage adding pipe, a ferrous sulfate adding pipe, a sulfuric acid adding pipe, a hydrogen peroxide adding pipe and a drain pipe, wherein the ferrous sulfate adding pipe and the sulfuric acid adding pipe are positioned at the lower part of the Fenton reaction tank, the sewage adding pipe is positioned above the ferrous sulfate adding pipe and the sulfuric acid adding pipe, the hydrogen peroxide adding pipe is positioned above the sewage adding pipe, the drain pipe is positioned above the hydrogen peroxide adding pipe, the sewage adding pipe comprises a sewage adding main pipe horizontally extending to the interior of the Fenton reaction tank, the outer end of the sewage adding main pipe is connected with an output port of the water pump through a pipeline, the inner end of the sewage adding main pipe is connected with sewage adding branch pipes which are horizontally arranged and distributed in a crossed and circumferential mode, and a row of water outlet nozzles are arranged on the anticlockwise side or the clockwise side of each sewage adding branch pipe; the ferrous sulfate adding pipe, the sulfuric acid adding pipe and the hydrogen peroxide adding pipe are respectively communicated with a ferrous sulfate storage tank, a sulfuric acid storage tank and a hydrogen peroxide storage tank through pipelines;
the adjusting tank is connected with a plurality of water inlet pipes, each water inlet pipe is provided with a flow adjusting valve, and one water inlet pipe is communicated with a drain pipe of the Fenton reaction tank; the sewage outlet of the adjusting tank is communicated with the sewage inlet of the primary sedimentation tank, the sewage outlet of the primary sedimentation tank is communicated with the sewage inlet of the biochemical tank, the sewage outlet of the biochemical tank is communicated with the sewage inlet of the secondary sedimentation tank, the sewage outlet of the secondary sedimentation tank is communicated with the sewage inlet of the tertiary sedimentation tank, and the sewage outlet of the tertiary sedimentation tank is communicated with the outside;
the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are respectively provided with a first sludge discharge pipeline, a second sludge discharge pipeline and a third sludge discharge pipeline which are communicated with the sludge tank, a sludge return pipeline for returning activated sludge is also arranged between the bottom of the secondary sedimentation tank and the biochemical tank, and the first sludge discharge pipeline, the second sludge discharge pipeline, the third sludge discharge pipeline and the sludge return pipeline are respectively provided with a conveying pump;
the sludge tank is communicated with the sludge adjusting tank, the sludge adjusting tank is communicated with the plate-type filter press, filtrate generated by the plate-type filter press is respectively communicated with a regulating liquid inlet and a primary sedimentation tank inlet of the blending tank through a regulating pipeline and a return pipeline, and the bottom of the blending tank is communicated with the sludge tank through a fourth sludge discharge pipeline.
2. The sewage treatment system of an underground pollution source as claimed in claim 1, wherein: the water outlet nozzle on the sewage adding branch pipe is inclined downwards, and the inclined angle is 3-5 degrees.
3. The sewage treatment system of an underground pollution source as claimed in claim 2, wherein: the inner wall of the Fenton reaction tank is provided with an upper separation ring plate and a lower separation ring plate in the height direction, and the upper separation ring plate is arranged between a drain pipe and a hydrogen peroxide adding pipe of the Fenton reaction tank.
4. The sewage treatment system of an underground pollution source as claimed in claim 3, wherein: still be provided with circulating line on the fenton retort, circulating line's entry sets up in the upper portion of fenton retort, circulating line's export sets up between last partition ring board and the lower partition ring board, is provided with the circulating pump on the circulating line.
5. The sewage treatment system of an underground pollution source as claimed in claim 4, wherein: the water drainage pipe of the Fenton reaction tank is connected with a water drainage branch pipe, and the other end of the water drainage branch pipe extends to the soil surface or the soil inside of the pollution source soil.
6. The sewage treatment system of an underground pollution source as claimed in claim 5, wherein: the pollution source soil comprises a high-concentration polluted area and a low-concentration polluted area, and the number of water wells in the high-concentration polluted area is larger than that of the low-concentration polluted area.
7. The sewage treatment system of an underground pollution source as claimed in claim 6, wherein: the other end of the drainage branch pipe extends to the soil surface or the soil inside the high-concentration polluted area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022930689.1U CN214115279U (en) | 2020-12-07 | 2020-12-07 | Sewage treatment system of underground pollution source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022930689.1U CN214115279U (en) | 2020-12-07 | 2020-12-07 | Sewage treatment system of underground pollution source |
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| Publication Number | Publication Date |
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| CN214115279U true CN214115279U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202022930689.1U Active CN214115279U (en) | 2020-12-07 | 2020-12-07 | Sewage treatment system of underground pollution source |
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| CN (1) | CN214115279U (en) |
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2020
- 2020-12-07 CN CN202022930689.1U patent/CN214115279U/en active Active
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