CN104131594B - Double well processing method is filled in-drawn water to underground water pollution - Google Patents
Double well processing method is filled in-drawn water to underground water pollution Download PDFInfo
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- CN104131594B CN104131594B CN201410255900.0A CN201410255900A CN104131594B CN 104131594 B CN104131594 B CN 104131594B CN 201410255900 A CN201410255900 A CN 201410255900A CN 104131594 B CN104131594 B CN 104131594B
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Abstract
nullThe present invention relates to a kind of underground water pollution and fill in double well processing method of drawing water，It is characterized in that: arrange in pollution of area source district and fill in reaction material well (17) and pumped well (18)，Constitute " fill in and draw water " double well，The position, water-bearing layer of wall casing (3) is provided with filter tube (6)，The top of wall casing (3) is impermeable water pipe (12)，What wall casing (3) was provided with filter tube (6) is externally provided with combination of media material layer (2)，Pollution concentration according to subsoil water and the effect of combination of media material determine the thickness of combination of media material，Reducing agent is injected in the two ends of combination of media material layer (2)，The injection of this reducing agent，Removal material repetitive cycling can be made to utilize，And water quality monitoring instrument is installed，Real-time dynamic monitoring quality of groundwater，Can be drawn water by drinking-water pipe，The present invention solves pollution of area source and is difficult to administer、The problem that subsoil water cannot be drunk，Single well，Just can reach the dual purpose of pollutant removal and water supply.
Description
Technical field
The invention belongs to groundwater treatment technical field, be adapted to large underground area water contaminated area, the most important water supply
Double well processing method is filled in-drawn water to a kind of underground water pollution that water head site is recovered by underground water pollution.
Background technology
Non-point pollution includes agricultural nonpoint source pollution and urban non-point source pollution, along with economic society and intensive agriculture
Development, groundwater environment problem gradually by point-source pollution to pollution of area source develop, by city to rural area extend.Especially agricultural
Planting process uses the nitrogen-containing pollutant of chemical fertilizer, fertilizer, industrial discharge in a large number, penetrates into for a long time in subsoil water, subsoil water
Middle nitrate content raises so that the content overproof of some area nitrate nitrogen in ground waters of northern China, causes substantial amounts of water
Seedbed water quality is contaminated, and constitutes a threat to safe drinking water and ecological environment, had a strong impact on the people water supply security and
Healthy.The processing method of underground water pollution and technique mainly have dystopy processing method and in-situ immobilization method, wherein at dystopy
Logos is to carry out, by ground water treatment technology, the technology that processes, mainly includes polluting soil body excavation method and extraction process side
Method；In-situ immobilization method is to save extraction under conditions of human intervention, the technology repaired by Polluted Groundwater in original place,
Specifically include that irrigation in situ: repair materials is injected at underground pollution, in downstream extraction subsoil water, the method repeatedly rinsed；
In situ chemical oxidation method: oxidant is injected subsoil water, with pollutant reaction；Permeable reactive barrier method (PRB): pass through trench
Groove, filling reaction medium, make groundwater pollutant be stopped and react, thus reach the purpose of degradation of contaminant.Upper
Stating in these methods, apply the most effectively permeable reactive barrier (PRB) method the most at the scene, PRB method is for former
The method of pollution components in subsoil water and soil is removed in position.PRB is typically mounted at underground reservoir, is perpendicular to direction of groundwater flow,
The reaction material used is typically the zero-valent metal (being most commonly that Fe0) of stronger reducing power, and other also has lives
Property carbon, ion exchange resin, phosphate and some natural materials such as chitin, zeolite, limestone, organic clay etc..PRB's
Structure has continuous body of wall and channel form, all has different applicable elements, and its design and construction are by hydrogeologic condition especially
It it is the impact of stratum and subsurface flow.PRB also has certain limitation: be only adapted to the groundwater pollutant diffusion of orientation, especially
It is pinniform pollutant diffusion in soil horizon or phreatic water；Design version is simple, the groove of the most continuous wall
Structure or channel form；The fitting depth of PRB is generally about 10m；The filling mode of PRB medium is for directly inserting groove
In；The service life of the dielectric material of PRB is generally 5～7 years, and dielectric material is difficult to recycle.Therefore when the water-bearing layer degree of depth
Relatively deep, when especially solving the pollution problem of groundwater level source, the application of permeable reactive barrier technology is just restricted.2012,
Water Resources Research Institute of Shangdong Province has carried out the in-situ immobilization engineering test of groundwater azotate pollution, it is thus achieved that " a kind of in
Coarse sand stratum carries out in-situ remediation system construction technology " patent of invention and the utility model patent of " a kind of PRB overlap well ".Wherein
Patent of invention is construction technology based on in-situ immobilization, lays particular emphasis on technical field of construction, the most how to build diaphragm wall, antiseepage stake,
PRB(permeable reactive barrier) material, unifunctional carry out water quality monitoring, mainly around PRB reaction wall, well distribution form with
And an invention of construction technology." a kind of PRB overlaps well " utility model patent is only a kind of set well technology, is i.e. in PRB well
A piece small diameter pipeline is installed, is mainly used in water quality monitoring.
Summary of the invention
The present invention is primarily to solve the in-situ immobilization problem of pollution of area source district subsoil water, particularly importantly subsoil water
Seedbed and the deeper Water quality restoration of the water-bearing layer degree of depth, thus reach water and process and supply water two targets and provide a kind of subsoil water dirty
Dye " fill in-draw water " double well processing method and technique.Its main processing method for filling in-draw water double well processing method,
Including filling in-pumped well, water-bearing layer directly fill in combining medium material technology, medium displacement and Catalytic Reduction technique, point
Period dynamic monitoring and pumping process etc..The application of the present invention, it is provided that one is applicable to pollution of area source district, the most important water
The underground water pollution district in seedbed, the removal of the groundwater pollutant that the water-bearing layer degree of depth is deeper and processing method and technique, this invention
It is capable of Pollutant Treatment and water supply dual purpose.The principle of the present invention is to utilize double well method manually to build water level funnel
Carrying out pollutant to come to process, i.e. offer in pollution of area source district and fill in well, the inner peripheral filling in well well head builds reaction material well,
Middle structure pumped well, utilizes the water-head filling in well and pumped well, and subsoil water penetrates into after filling in well filtration, reaction and draws water
In well, the removal carrying out groundwater pollutant processes.Cylindrical space between pumped well and stratum is that reaction medium combines material
That expects fills in space, the runoff of subsoil water and the space of pollutant removal；Utilize double well construction method will fill in well and draw water
Well merges the design in a boring, thus realizes water and process and the dual purpose of direct-furnish water factory of drawing water.Concrete embodiment party
Method is as follows:
Double well is filled in-drawn water to a kind of underground water pollution, arranges reaction material well in pollution of area source district, reaction material well
Arranging wall casing on inwall, be pumped well in wall casing, reaction material well and pumped well constitute underground water pollution and fill in-draw water two
Weight well, the position, water-bearing layer of wall casing is provided with filter tube, and the top of wall casing is impermeable water pipe, and wall casing is provided with outside filter tube
Being provided with combination of media material layer, the above of combination of media material layer is filled in viscous through interlayer between the outer of impermeable water pipe and ground
Soil ball, prevents sewage from entering in well along wall casing, and the bottom of wall casing is embedded in basement rock, arranges and draw water in wall casing
Pipe, the hole diameter of described pumped well is between 110cm～160cm, and the internal diameter of described drinking-water pipe is between 10～20cm；Clay
The thickness of ball is at 0.5m～0.8m.
Double well processing method is filled in-drawn water to a kind of underground water pollution:
One, the cylindrical space at combination of media material layer fills in combination of media material, according to the pollution concentration of subsoil water and
The effect of combination of media material determines the thickness of combination of media material, and thickness general control is 50～70cm, for preventing filler
During cause the waterpower of combination of media material to sort, combination of media material insert employing physics jet groutinl method or machinery
Injection method, fills in entrance position, water-bearing layer combination of media material；
Two, reducing agent periodically injects: the physical life of nitrate removal combination of media material typically in 7～10 years, in order to
Ensure the recycling of nitrate removal combination of media material, need to inject reducing agent in the two ends of combination of media material layer,
The equipment of injecting reductant into is arranged in the well in the area needing to carry out groundwater azotate process, and this reducing agent injection device sets
Having two inflatable capsules connected and reducing agent intrusion pipe, reducing agent intrusion pipe is provided with liquid outlet, and inflatable capsule connects
Having compression tube and communicating pipe, water filling in inflatable capsule, under the pressure effect of force (forcing) pump, upper and lower two inflatable capsules are swollen
Swollen, between closure reducing agent intrusion pipe and wall casing gap, the pipeline section between two expanded capsules forms reducing agent serosity and goes out
Flow tube section, reducing agent serosity is flowed out by liquid outlet, and reducing agent serosity outflow tube section can be placed on positions different in well, with pin
The process well of diverse location is applied nitrate removal combination of media material reductant, the injection of this reducing agent, it is possible to make nitric acid
Salt is removed combination of media material repetitive cycling and is utilized, and solves nitrate removal combination of media materials'use life-span restricted problem,
And can effectively solve the problem that the blockage problem of nitrate removal combination of media material；
Three, draw water and water quality monitoring: after periodically injecting reducing agent, double well can be filled in-drawn water to underground water pollution
Reducing agent injection device in well is withdrawn from, and installs water quality monitoring instrument, and real-time dynamic monitoring quality of groundwater passes through drinking-water pipe
Drawing water, after the subsoil water of pollution existing in well is discharged, the subsoil water after removing filtration of material is cleaning subsoil water,
The water quality of subsoil water reaches in drinking water after Water Quality For Groundwater Sources standard, can constant flow directly feed water factory or user.
The present invention is to carry out the underground water pollution of in-situ remediation system at groundwater level source IA to fill in-draw water double
The processing method of Jing Jing and technique: solve the problem that pollution of area source is difficult to administer, subsoil water cannot be drunk, the knot of its double well
Structure has only to single well of constructing, and just can reach the dual purpose of pollutant removal and water supply.Under pumping with constant rate state, can protect
Card enters the water body in well all through combining medium material, and water quality, through coagulation, reaches degraded, the mesh of removal pollutant
, forming subsoil water in-situ treatment system, the purpose reaching to supply water of being drawn water by pumped well, the method and technique can extensively be answered
The process of the pollutant in pollution of area source district subsoil water and water supply.
Accompanying drawing explanation
Fig. 1 is that the present invention fills in the-theory structure schematic diagram of pumped well.
In figure, 2, combination of media material layer, 3, wall casing, 5, interlayer, 6, filter tube, 7, clay ball, 8, basement rock, 9,
Face, 10, groundwater level, 11, reducing agent injection device, 12, impermeable water pipe, 13, expanded capsule, 14, intrusion pipe, 15, pressurization
Pipe, 16, communicating pipe, 17, reaction material well, 18, pumped well, 19, liquid outlet.
Detailed description of the invention
The present invention is adaptable to pollution of area source district groundwater pollutant and removes the place filling in-draw water double well taking into account water supply
Reason method.Referring to the drawings, specific embodiment is as follows:
Double well processing method is filled in-drawn water to a kind of underground water pollution, arranges reaction material well in pollution of area source district
(17), the inwall of reaction material well (17) arranges wall casing (3), be pumped well (18) in wall casing (3), reaction material well
(17) constituting underground water pollution with pumped well (18) and fill in-draw water double well, the position, water-bearing layer of wall casing (3) is provided with filter tube
(6), the top of wall casing (3) is impermeable water pipe (12), and what wall casing (3) was provided with filter tube (6) is externally provided with combination of media material
The bed of material (2), the above of combination of media material layer (2) is filled between the outer and ground (9) of impermeable water pipe (12) through interlayer (5)
Clay ball (7), prevents sewage from entering in well along wall casing (3), and the bottom of wall casing (3) is embedded in basement rock (8), the borehole wall
Arranging drinking-water pipe in pipe (3), the hole diameter of described pumped well is between 110cm～160cm, and the internal diameter of described drinking-water pipe is 10
～between 20cm；The thickness of clay ball is at 0.5m～0.8m；It is characterized in that: processing method is as follows:
One, the cylindrical space in combination of media material layer (2) fills in combination of media material, according to the pollution concentration of subsoil water
And the effect of combination of media material determines the thickness of combination of media material, thickness general control is 50～70cm, for preventing from filling out
The waterpower causing combination of media material during material sorts, and inserting of combination of media material uses physics jet groutinl method or machine
Tool injection method, fills in entrance position, water-bearing layer combination of media material；
Two, reducing agent periodically injects: the physical life of nitrate removal combination of media material typically in 7～10 years, in order to
Ensure the recycling of nitrate removal combination of media material, need to inject reduction in the two ends of combination of media material layer (2)
Agent, injects reductant in the well that equipment (11) is arranged on the area needing to carry out groundwater azotate process, and this reducing agent is noted
Entering equipment (11) and be provided with inflatable capsule (13) and the reducing agent intrusion pipe (14) of two series connection, reducing agent intrusion pipe sets on (14)
Having liquid outlet (19), inflatable capsule (13) connects compression tube (15) and communicating pipe (16), notes in inflatable capsule (13)
Water, under the pressure effect of force (forcing) pump, upper and lower two inflatable capsules (13) expand, closure reducing agent intrusion pipe (14) and the borehole wall
Gap between pipe (3), pipeline section between two expanded capsules (13) forms reducing agent serosity outflow tube section, reducing agent serosity by
Liquid outlet (19) flows out, and reducing agent serosity outflow tube section can be placed at positions different in well, with the place for diverse location
Reason well applies nitrate removal combination of media material reductant, the injection of this reducing agent, it is possible to make nitrate removal combination of media
Material repetitive cycling utilizes, and solves nitrate removal combination of media materials'use life-span restricted problem, and can effectively solve the problem that
The blockage problem of nitrate removal combination of media material；
Three, draw water and water quality monitoring: after periodically injecting reducing agent, underground water pollution is filled in-drawn water in double well well
Reducing agent injection device (11) withdraw from, and water quality monitoring instrument is installed, real-time dynamic monitoring quality of groundwater, pass through drinking-water pipe
Drawing water, after the subsoil water of pollution existing in well is discharged, the subsoil water after removing filtration of material is cleaning subsoil water,
The water quality of subsoil water reaches in drinking water after Water Quality For Groundwater Sources standard, can constant flow directly feed water factory or user.
Claims (1)
1. a double well processing method is filled in-drawn water to underground water pollution, arranges reaction material well (17) in pollution of area source district,
Wall casing (3) is set on the inwall of reaction material well (17), be pumped well (18) in wall casing (3), reaction material well (17) and
Pumped well (18) constitutes underground water pollution and fills in-draw water double well, and the position, water-bearing layer of wall casing (3) is provided with filter tube (6), the borehole wall
The top of pipe (3) is impermeable water pipe (12), and what wall casing (3) was provided with filter tube (6) is externally provided with combination of media material layer (2),
The above of combination of media material layer (2) fills in clay ball through interlayer (5) between the outer and ground (9) of impermeable water pipe (12)
(7), preventing sewage from entering in well along wall casing (3), the bottom of wall casing (3) is embedded in basement rock (8), wall casing (3)
Drinking-water pipe is inside set, it is characterised in that: processing method is as follows:
One, the cylindrical space in combination of media material layer (2) fills in combination of media material, according to pollution concentration and Jie of subsoil water
The effect of matter combined material determines the thickness of combination of media material, and thickness general control is 50～70cm, for preventing filler mistake
The waterpower causing combination of media material in journey sorts, the employing physics jet groutinl method of inserting of combination of media material or machinery note
Enter method, combination of media material is filled in entrance position, water-bearing layer；
Two, reducing agent periodically injects: the physical life of nitrate removal combination of media material is typically in 7～10 years, in order to ensure
The recycling of nitrate removal combination of media material, needs to inject reducing agent in the two ends of combination of media material layer (2), will
Reducing agent injection device (11) is arranged in the well in the area needing to carry out groundwater azotate process, this reducing agent injection device
(11) being provided with inflatable capsule (13) and the reducing agent intrusion pipe (14) of two series connection, reducing agent intrusion pipe (14) is provided with out liquid
Hole (19), inflatable capsule (13) connects compression tube (15) and communicating pipe (16), water filling in inflatable capsule (13), is adding
Under the pressure effect of press pump, upper and lower two inflatable capsules (13) expand, closure reducing agent intrusion pipe (14) and wall casing (3) it
Between gap, pipeline section between two expanded capsules (13) forms reducing agent serosity outflow tube section, and reducing agent serosity is by liquid outlet
(19) flowing out, reducing agent serosity outflow tube section can be placed at positions different in well, executes with the process well for diverse location
Add nitrate removal combination of media material reductant, the injection of this reducing agent, it is possible to make nitrate removal combination of media material weight
Recycle again, solve nitrate removal combination of media materials'use life-span restricted problem, and can effectively solve the problem that nitrate
Remove the blockage problem of combination of media material；
Three, draw water and water quality monitoring: after periodically injecting reducing agent underground water pollution fill in-draw water in double well well also
Former dose of injection device (11) is withdrawn from, and installs water quality monitoring instrument, and real-time dynamic monitoring quality of groundwater is carried out by drinking-water pipe
Drawing water, after the subsoil water of pollution existing in well is discharged, the subsoil water after removing filtration of material is cleaning subsoil water, underground
The water quality of water reaches in drinking water after Water Quality For Groundwater Sources standard, can constant flow directly feed water factory or user.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105460986B (en) * | 2015-11-27 | 2019-01-11 | 上海岩土工程勘察设计研究院有限公司 | A kind of in-situ remediation method of contaminated site |
| CN107938752B (en) * | 2017-11-30 | 2020-05-15 | 中冶南方都市环保工程技术股份有限公司 | Safety water taking well |
| CN108580530A (en) * | 2018-04-23 | 2018-09-28 | 北京高能时代环境技术股份有限公司 | The pollution amelioration device injected in situ for single-layer or multi-layer |
| CN109403423B (en) * | 2018-12-20 | 2024-03-22 | 黑龙江省九0四环境工程勘察设计院 | Groundwater extraction device |
| CN112028406B (en) * | 2020-09-08 | 2022-11-25 | 中煤科工集团西安研究院有限公司 | Underground water in-situ remediation device and method based on directional drilling |
| CN114524533A (en) * | 2022-03-02 | 2022-05-24 | 山东省水利科学研究院 | Underground water in-situ remediation device and method for increasing seepage path |
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| CN203117005U (en) * | 2012-07-30 | 2013-08-07 | 山东省水利科学研究院 | PRB (Permeable Reactive Barrier) casing well |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202688016U (en) * | 2012-07-30 | 2013-01-23 | 山东省水利科学研究院 | In-situ repair device for underground water |
| CN203117005U (en) * | 2012-07-30 | 2013-08-07 | 山东省水利科学研究院 | PRB (Permeable Reactive Barrier) casing well |
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