CN215592807U - Permeable reactive barrier for repairing underground water polluted by heavy metals - Google Patents
Permeable reactive barrier for repairing underground water polluted by heavy metals Download PDFInfo
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- CN215592807U CN215592807U CN202122076371.6U CN202122076371U CN215592807U CN 215592807 U CN215592807 U CN 215592807U CN 202122076371 U CN202122076371 U CN 202122076371U CN 215592807 U CN215592807 U CN 215592807U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
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Abstract
The utility model relates to the technical field of sewage remediation, and discloses a permeable reactive barrier for remediating underground water polluted by heavy metals, which comprises a treatment tank, wherein a water inlet pipe is arranged at one end of the treatment tank, purified water flows through the water inlet pipe, a treatment pipe is arranged at the other end of the treatment tank, a sewage pipe is arranged at the bottom of the treatment tank, sewage flows through the sewage pipe, the top end of the sewage pipe extends into the treatment tank and bends ninety degrees towards the treatment pipe, and polluted feather is formed in the treatment tank by the sewage flowing out of the sewage pipe. Through the funnel-shaped water interception wall, a large range of pollution plumes can be collected and centralized and guided to the treatment pipe, so that the reaction filler in the treatment pipe can be fully mixed and contacted with the polluted underground water, the waste phenomenon caused by insufficient utilization of the reaction filler in the wall due to the large wall surface of the traditional permeable reaction wall is avoided, meanwhile, the manufacturing cost is lower, and the volume is smaller.
Description
Technical Field
The utility model relates to the technical field of sewage remediation, in particular to a permeable reactive barrier for remediating underground water polluted by heavy metals.
Background
The underground water is an important drinking water resource, has very high economic value and ecological value, and is an important basis for human beings to rely on survival and social development. The water environment pollution problem is one of the most troublesome problems in the century, the total discharge amount of various types of waste water at home and abroad is increased year by year, wherein the specific gravity of the total discharge amount of the industrial waste water is the largest, and the industrial waste water discharged by the industries of electroplating, chemical engineering, smelting and the like contains a large amount of heavy metals such as lead, arsenic, zinc, copper, cadmium, nickel, mercury and the like;
in recent years, along with unreasonable development and utilization of various resources, improper treatment, non-standard discharge and accidental leakage of heavy metal wastewater, heavy metals enter underground water through various channels, so that the underground water is polluted, and adverse effects are generated on social development and human drinking water safety. Therefore, how to effectively repair the underground water polluted by the heavy metal and protect the human health and the ecological environment is a problem which needs to be solved urgently at present;
the traditional underground water restoration technology generally refers to pumping treatment, the underground water is pumped to the ground surface, and is treated by conventional physical, chemical and biological methods and then is recharged to the underground, so that the method has large disturbance to the underground water, easily forms the diffusion of pollutants, and is difficult to achieve the restoration target;
a Permeable Reactive Barrier (PRB) technology is a defect of a traditional underground water remediation method, is emerging in 90 s in the 20 th century, and is an in-situ remediation method which is currently in hot spots of application and research in developed countries such as Europe and America, pollutants released from a pollution source can be dissolved in water to form a polluted underground water plume in the downstream seepage process, and the polluted underground water plume can be removed through physical, chemical and biological actions with active materials in a wall body when flowing through the PRB;
compared with the traditional underground water treatment method, namely a pumping treatment method, the PRB technology has the advantages of capability of continuously treating pollutants in situ (5-10 years), treatment of various pollutants (such as heavy metals, organic matters and the like), good treatment effect, convenience in installation and construction, relatively high cost performance and the like;
however, in practical applications, we have found that the conventional permeable reactive barrier still has certain disadvantages, such as: although the traditional permeable reactive barrier is easy to construct and has small influence on underground water flow, if the thickness of a polluted area or an aquifer is large, the area of the reactive barrier is large, and the manufacturing cost is high, so that the in-situ reactive barrier technology is unrealistic to use, and when the reactive filler is inactivated or blocked, the reactive filler is troublesome to clean and replace;
based on the above, we propose a permeable reactive barrier for repairing groundwater polluted by heavy metals, and hopefully solve the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides the permeable reactive barrier for repairing the underground water polluted by the heavy metal, which has the advantages of low cost, small volume and easy cleaning and replacement of reactive filler.
(II) technical scheme
In order to realize the purposes of low cost, small size and easy cleaning and replacement of the reaction filler, the utility model provides the following technical scheme: a permeable reactive barrier for repairing underground water polluted by heavy metals comprises a treatment box, wherein one end of the treatment box is provided with a water inlet pipe, purified water flows in the water inlet pipe, and the other end of the treatment box is provided with a treatment pipe;
the bottom of the treatment box is provided with a sewage pipe, sewage flows in the sewage pipe, the top end of the sewage pipe extends into the treatment box and bends at ninety degrees towards the treatment pipe, and sewage flowing out of the sewage pipe forms pollution feathers in the treatment box;
the inner wall of the treatment box is also fixedly provided with a cut-off wall, the cut-off wall is funnel-shaped, the large end of the funnel-shaped cut-off wall is opened towards the sewage pipe, and the small end of the opening is communicated with the treatment pipe.
As a preferred technical scheme of the utility model, the inner wall of the treatment tank is also fixedly provided with a water distribution plate, the interior of the water distribution plate is uniformly provided with water distribution holes, and the water distribution plate is arranged between the water inlet pipe and the treatment pipe.
As a preferable technical scheme of the utility model, the treatment pipe comprises a filter pipe and a reaction pipe, the filter pipe is fixedly arranged on the outer wall of the treatment box, and the reaction pipe is connected with the filter pipe through a flange.
As a preferred technical scheme of the utility model, the tail end of the reaction tube is also connected with a water outlet tube through a flange, and a control valve is arranged in the water outlet tube.
As a preferred technical scheme of the utility model, the inner wall of the filter tube is fixedly provided with a filter screen, both sides of the inner wall of the reaction tube are provided with quartz sand layers, and a reaction filler is arranged between the two quartz sand layers.
As a preferable technical scheme of the utility model, the inner wall of the treatment box is also fixedly provided with a sedimentation pipe, the sedimentation pipe is communicated with the filtering pipe, and the bottom of the sedimentation pipe is uniformly provided with sludge collection hoppers.
(III) advantageous effects
Compared with the prior art, the permeable reactive barrier for repairing underground water polluted by heavy metals has the following beneficial effects:
1. the permeable reactive barrier for repairing the groundwater polluted by the heavy metal can collect a large range of pollution feathers through the funnel-shaped water interception wall and guide the pollution feathers to the treatment pipe in a centralized manner, so that the reaction filler in the treatment pipe can be fully mixed and contacted with the polluted groundwater, the waste phenomenon caused by insufficient utilization of the reaction filler in the wall due to the fact that the wall surface of the traditional permeable reactive barrier is large is avoided, the manufacturing cost is lower, and the volume is smaller.
2. This a permeable reactive barrier for restoreing groundwater that is polluted by heavy metal, it includes filter tube and reaction tube to handle the pipe, both are connected through the flange, make it become removable, the replacement, abluent reaction little unit, when the quality of water of intaking changes or reaction material adsorbs the saturation and pierces through, can make things convenient for the dismouting to pack in order to change the reaction, and easy operation has saved the time cost, sewage treatment's continuity has been guaranteed to a certain extent, and the operation maintenance cost is lower, the sexual valence relative altitude, be favorable to the popularization and application of technique.
3. This a permeable reactive barrier for restoreing groundwater that is polluted by heavy metal, be provided with filter screen in the filter tube, be provided with quartz sand layer and reaction filler in the reaction tube, filter screen can filter large granule material in the sewage, first layer quartz sand both can play the effect of filtering granule type pollutant, the clearance that still can utilize quartz sand plays the water distribution uniformity, alleviate because water pressure is too big and cause the effect of assaulting to packing material, the reaction filler adsorbs the heavy metal ion of getting rid of in the sewage, the impact of rivers to packing material can be alleviated to the second layer quartz sand, play to pack and block and fixed effect, such structural design can make the heavy metal ion that handles the pipe in can more effectual removal sewage, improve sewage remediation efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic illustration of the settling tube of the present invention after installation;
in the figure: 1. a treatment tank; 2. a water inlet pipe; 3. a water distribution plate; 4. a sewage pipe; 5. pollution feather; 6. a water cut-off wall; 7. a treatment tube; 701. a filter tube; 702. a reaction tube; 8. filtering the screen; 9. a quartz sand layer; 10. a reactive filler; 11. a water outlet pipe; 12. a control valve; 13. a settling tube; 14. a mud collection hopper.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1, a permeable reactive barrier for remedying groundwater polluted by heavy metals comprises a treatment tank 1, wherein one end of the treatment tank 1 is provided with a water inlet pipe 2, the water inlet pipe 2 is connected with a water suction pump, and the water suction pump is used for pumping purified water and conveying the purified water into the treatment tank 1 through the water inlet pipe 2;
the other end of the treatment box 1 is provided with a treatment pipe 7, the treatment pipe 7 comprises a filter pipe 701 and a reaction pipe 702, the filter pipe 701 is fixedly arranged on the outer wall of the treatment box 1, the reaction pipe 702 is connected with the filter pipe 701 through a flange, so that the reaction pipe 701 becomes a small reaction unit which can be disassembled, replaced and cleaned, when the quality of inlet water is changed or a reaction material is adsorbed, saturated and penetrated, the reaction packing 10 can be conveniently disassembled and assembled to replace the reaction packing 10, the operation is simple, the time cost is saved, the continuity of sewage treatment is ensured to a certain extent, the operation maintenance cost is lower, the cost performance is high, and the popularization and the application of the technology are facilitated;
the tail end of the reaction tube 702 is also connected with a water outlet pipe 11 through a flange, a control valve 12 is arranged inside the water outlet pipe 11, purified sewage is conveniently discharged through the water outlet pipe 11, and the on-off of the water outlet pipe 11 can be controlled through the control valve 12;
the inner wall of the filter pipe 701 is fixedly provided with a filter screen 8, both sides of the inner wall of the reaction pipe 702 are provided with quartz sand layers 9, a reaction filler 10 is arranged between the two quartz sand layers 9, the filter screen 8 can filter large-particle substances in sewage, the first quartz sand layer 9 can play a role in filtering particle-type pollutants, and can also play a role in uniformly distributing water by utilizing the gap of quartz sand to relieve the impact on a filling material caused by too large water pressure, the reaction filler 10 can adsorb and remove heavy metal ions in the sewage, the second quartz sand layer 9 can relieve the impact on the filling material caused by water flow and play a role in blocking and fixing the filler, the structural design can enable the treatment pipe 7 to more effectively remove the heavy metal ions in the sewage, the sewage remediation efficiency is improved, in the embodiment, a particle-type molecular sieve is preferably used as the reaction filler 10, the reaction filler 10 is one of 13X and 4A, Y type particle molecular sieves, and the particle size of the particles is 20-40 meshes or 20-60 meshes;
the bottom of the treatment box 1 is provided with a sewage pipe 4, the bottom of the sewage pipe 4 is also provided with a water suction pump, the water suction pump at the bottom of the sewage pipe 4 is used for pumping sewage, so that the sewage flows into the treatment box 1 through the sewage pipe 4, the top end of the sewage pipe 4 extends into the treatment box 1 and bends at ninety degrees towards the treatment pipe 7, the sewage flowing out of the sewage pipe 4 forms pollution feathers 5 in the treatment box 1, the flowing direction of the sewage in the sewage pipe 4 is consistent with the flowing direction of the purified water in the treatment box 1, and the flowing position of the sewage is positioned in the middle of the treatment box 1, so that the diffusion effect of the pollution feathers 5 is optimal;
the inner wall of the treatment box 1 is also fixedly provided with a water interception wall 6, the water interception wall 6 is funnel-shaped, the end with the large opening of the funnel-shaped water interception wall 6 faces the sewage pipe 4, the end with the small opening is communicated with the treatment pipe 7, and the large-scale pollution feathers 5 can be gathered and guided to the treatment pipe 7 through the funnel-shaped water interception wall 6, so that the reaction filler 10 in the treatment pipe 7 can be fully mixed and contacted with the polluted underground water, the waste phenomenon caused by insufficient utilization of reaction materials in the wall due to the large wall surface of the traditional permeable reaction wall is avoided, the manufacturing cost is lower, the volume is smaller, in the embodiment, the included angle between the outer wall of the funnel-shaped water interception wall 6 and the inner wall of the treatment box 1 is thirty degrees, and the effect of gathering the pollution feathers 5 and guiding to the treatment pipe 7 in a large scale is optimal;
the inner wall of the treatment tank 1 is also fixedly provided with a water distribution plate 3, water distribution holes are uniformly formed in the water distribution plate 3, the water distribution plate 3 is arranged between the water inlet pipe 2 and the treatment pipe 7, and purified water flowing out of the water inlet pipe 2 can be uniformly dispersed by the water distribution plate 3 when flowing through the water distribution plate 3;
referring to fig. 2, a settling tube 13 is further fixedly mounted on the inner wall of the treatment tank 1, the settling tube 13 may be a circular tube type or a square tube type, the settling tube 13 is communicated with the filtering tube 701, sludge collecting hoppers 14 are uniformly arranged at the bottom of the settling tube 13, and when sewage flows through the settling tube 13, sludge in the sewage is precipitated under the action of self gravity and is precipitated in the sludge collecting hoppers 14, and meanwhile, impurities filtered by the filtering screen 8 are also precipitated in the sludge collecting hoppers 14 under the action of self gravity.
The working principle and the using process of the utility model are as follows:
when the device is used, clean water enters the treatment tank 1 through the water inlet pipe 2 under the action of the water pump, stable water flow is formed through the water distribution plate 3 with uniform holes, sewage enters the treatment tank 1 through the sewage pipe 4 under the action of the water pump, stable pollution feathers 5 are formed in the water flow after the sewage is discharged from the sewage pipe 4, the pollution feathers 5 in a large range are gathered together and are guided to the treatment pipe 7 under the action of the water interception wall 6, large granular substances in the sewage are blocked by the filter screen 8 in the filter pipe 701 and are deposited into the sludge collection hopper 14 to be removed under the action of self gravity, so that the blockage of a subsequent reaction zone is reduced;
the sewage that gets into reaction tube 702 can pass through quartz sand layer 9, first layer quartz sand layer 9 both can play the effect of filtering granule type pollutant, still can utilize the clearance of quartz sand to play the water distribution of uniformity, alleviate the effect that causes the impact to the filler material because water pressure is too big, then sewage and reaction filler 10 fully react and then adsorbed and get rid of, the impact of rivers to reaction filler 10 can be alleviated to second layer quartz sand layer 9, play to block and fixed effect to the filler, clean groundwater after the restoration finally discharges through outlet pipe 11.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A permeable reactive barrier for remediation of groundwater contaminated with heavy metals, comprising a treatment tank (1), characterized in that: a water inlet pipe (2) is arranged at one end of the treatment box (1), purified water flows in the water inlet pipe (2), and a treatment pipe (7) is arranged at the other end of the treatment box (1);
a sewage pipe (4) is arranged at the bottom of the treatment tank (1), sewage flows through the sewage pipe (4), the top end of the sewage pipe (4) extends into the treatment tank (1) and bends at ninety degrees towards a treatment pipe (7), and polluted feather (5) is formed in the treatment tank (1) by the sewage flowing out of the sewage pipe (4);
the inner wall of the treatment box (1) is fixedly provided with a water interception wall (6), the water interception wall (6) is funnel-shaped, the large opening end of the funnel-shaped water interception wall (6) faces to the sewage pipe (4), and the small opening end of the funnel-shaped water interception wall is communicated with the treatment pipe (7).
2. A permeable reactive barrier for remediating heavy metal contaminated groundwater as claimed in claim 1, wherein: the inner wall of the treatment tank (1) is also fixedly provided with a water distribution plate (3), water distribution holes are uniformly formed in the water distribution plate (3), and the water distribution plate (3) is arranged between the water inlet pipe (2) and the treatment pipe (7).
3. A permeable reactive barrier for remediating heavy metal contaminated groundwater as claimed in claim 1, wherein: the treatment pipe (7) comprises a filter pipe (701) and a reaction pipe (702), the filter pipe (701) is fixedly installed on the outer wall of the treatment box (1), and the reaction pipe (702) is connected with the filter pipe (701) through a flange.
4. A permeable reactive barrier for remediating heavy metal contaminated groundwater as claimed in claim 3, wherein: the tail end of the reaction tube (702) is also connected with a water outlet tube (11) through a flange, and a control valve (12) is arranged inside the water outlet tube (11).
5. A permeable reactive barrier for remediating groundwater contaminated with heavy metals as claimed in claim 4, wherein: the inner wall of the filter pipe (701) is fixedly provided with a filter screen (8), both sides of the inner wall of the reaction pipe (702) are provided with quartz sand layers (9), and a reaction filler (10) is arranged between the two quartz sand layers (9).
6. A permeable reactive barrier for remediating groundwater contaminated with heavy metals as claimed in claim 5, wherein: the inner wall of the treatment box (1) is also fixedly provided with a sedimentation pipe (13), the sedimentation pipe (13) is communicated with the filter pipe (701), and the bottom of the sedimentation pipe (13) is uniformly provided with a sludge collection hopper (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076371.6U CN215592807U (en) | 2021-08-30 | 2021-08-30 | Permeable reactive barrier for repairing underground water polluted by heavy metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076371.6U CN215592807U (en) | 2021-08-30 | 2021-08-30 | Permeable reactive barrier for repairing underground water polluted by heavy metals |
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| Publication Number | Publication Date |
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| CN215592807U true CN215592807U (en) | 2022-01-21 |
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| CN202122076371.6U Expired - Fee Related CN215592807U (en) | 2021-08-30 | 2021-08-30 | Permeable reactive barrier for repairing underground water polluted by heavy metals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394636A (en) * | 2022-01-25 | 2022-04-26 | 成都理工大学 | Combined type PRB for treating heavy metal in underground water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394636A (en) * | 2022-01-25 | 2022-04-26 | 成都理工大学 | Combined type PRB for treating heavy metal in underground water |
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