CN209352622U - The built-in permeable reactor of individual well - Google Patents

The built-in permeable reactor of individual well Download PDF

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Publication number
CN209352622U
CN209352622U CN201920010895.5U CN201920010895U CN209352622U CN 209352622 U CN209352622 U CN 209352622U CN 201920010895 U CN201920010895 U CN 201920010895U CN 209352622 U CN209352622 U CN 209352622U
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China
Prior art keywords
well
prb
water
tube
clad
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CN201920010895.5U
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Inventor
陈学群
管清花
李福林
李成光
王爱芹
刘彩虹
田婵娟
辛光明
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Water Resources Research Institute of Shandong Province
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Water Resources Research Institute of Shandong Province
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2806—Anaerobic processes using solid supports for microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The utility model discloses a kind of built-in permeable reactors of individual well comprising underground equipment；The underground equipment includes outer well tube, interior well casing and PRB clad, and interior well pipe sleeve is set in outer well tube, and PRB clad is set between the outer well tube and interior well casing；Wherein, the position on the tube wall of the outer well tube relative to underground different water cut layer offers multiple inlet openings, and the tube wall lower end of the interior well casing offers multiple drainage holes.The built-in permeable reactor of the individual well of the utility model is when in use, the inlet opening that underground water passes through outer well tube first enters PRB clad, PRB clad from top to bottom by it is certain cross water route after, it is flowed into interior well casing by the drainage hole of interior well casing bottom, so that all water bodys and PRB clad have carried out sufficient haptoreaction, effluent quality is protected.

Description

The built-in permeable reactor of individual well
Technical field
The utility model belongs to groundwater treatment technical field, is related to a kind of built-in permeable reactor of individual well, is used for The processing of groundwater azotate.
Background technique
Underground water be economy and society development and people's lives necessary to, irreplaceable valuable source.But by In a large amount of uses, dirty filling and the continuous deterioration of surface water of agriculture chemical, so that the pollutants such as nitrate constantly enter ground In being lauched, underground water pollution problem is caused to become increasingly conspicuous.Once underground water will jeopardize people's health peace by azotate pollution Entirely, it and administers by no means easy.The many regional underground water in China receive the pollution of nitrate to varying degrees.Permeability Reaction wall (PRB) is to repair a kind of in-situ techniques of polluted underground water, has at low cost, environmental perturbation is small and available period is long etc. Feature, development prospect are good.Some countries in North America and Europe have carried out the research and engineering practice of a large amount of PRB technologies, The research and application to PRB technology are also gradually carried out in recent years in China.
In practical projects, the technical problem for being difficult to overcome there are one is the in-situ treatment technology of underground water: water body with The haptoreaction time of PRB material is difficult to control, and generally increases water route by changing the thickness of PRB wall in engineering Diameter including increasing the thickness of continuous wall or increasing the hole diameter of PRB filler well, but when underground water buried depth is deeper, is applied Work is difficult, and even increases the thickness of PRB wall to a certain extent, and when pump-out is larger, water body is in PRB Reaction time in material is still very short, and the set goal is not achieved in treatment effect.
Utility model content
The utility model aim is to provide a kind of built-in permeable reactor of individual well, can be effectively controlled underground water and exists Path and time in PRB material, to improve the clean-up effect of underground water.
The utility model solves technical problem and adopts the following technical scheme that a kind of built-in permeable reactor of individual well, Including underground equipment；
The underground equipment includes outer well tube, interior well casing and PRB clad, and interior well pipe sleeve is set in outer well tube, and PRB packet Coating is set between the outer well tube and interior well casing；
Wherein, the position on the tube wall of the outer well tube relative to underground different water cut layer offers multiple inlet openings, institute The tube wall lower end for stating interior well casing offers multiple drainage holes.
Optionally, the outer well tube and interior well casing are arranged concentrically.
Optionally, the drainage hole is opened at the tube wall bottommost artesian aquifer position of interior well casing.
Optionally, the lower end of the PRB clad is lower than the water-bearing layer of the bottom, and the upper end of the PRB clad is higher than The water-bearing layer of top layer.
Optionally, the built-in permeable reactor of the individual well further includes soil surface treatment device, the soil surface treatment dress It sets including water inlet pipe and drainpipe and the filter core module being connected to the water inlet pipe and drainpipe, the filter core module parallel connection is set It sets.
Optionally, the filter core module includes pipeline and the filler that is filled in the pipeline, and the filler is active carbon Or haydite, one end of the pipeline are connected to the water inlet pipe, the other end is connected to drainpipe.
Optionally, flow detector and outlet water control valve are provided on the water inlet pipe.
The utility model has the following beneficial effects: the built-in permeable reactor of the individual well of the utility model is using When, the inlet opening that underground water passes through outer well tube first enters PRB clad, passes through certain mistake from top to bottom in PRB clad After water route, flowed into interior well casing by the drainage hole of interior well casing bottom, so that all water bodys are filled with PRB clad The haptoreaction divided, effluent quality are protected.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the built-in permeable reactor of individual well of the utility model；
Fig. 2 is the structural schematic diagram of the underground equipment of the utility model；
Fig. 3 is the structural schematic diagram of the soil surface treatment device of the utility model；
The mark in the figure shows: the water-bearing layer 1-；2- underground equipment；3- soil surface treatment device；4- outer well tube；Well casing in 5-； 6-PRB clad；The inlet opening 7-；8- drainage hole；9- water inlet pipe；10- drainpipe；11- filter core module；12- flow detector； 13- outlet water control valve.
Specific embodiment
The technical solution of the utility model is further elaborated below with reference to examples and drawings.
Embodiment 1
Present embodiments provide a kind of built-in permeable reactor of individual well for underground water pollution prevention and treatment comprising well Lower equipment and soil surface treatment device.
The underground equipment includes outer well tube, interior well casing and PRB clad, and interior well pipe sleeve is set in outer well tube, and PRB packet Coating is set between the outer well tube and interior well casing, i.e., PRB covering material is filled between outer well tube and interior well casing.
Wherein, multiple water inlets are offered at the position in water-bearing layer different relative to underground on the tube wall of the outer well tube Hole, the lower end of the interior well casing tube wall offer multiple drainage holes, so that the water in the different water cut layer of underground is described in Inlet opening enters to contact with PRB clad in the outer well tube, and is purified by PRB clad；Purified water passes through The drainage hole enters the inside of the interior well casing, and extracts interior well casing out by equipment such as water pumps；In the present embodiment, it is preferable that institute It states outer well tube and interior well casing is arranged concentrically.
When the built-in permeable reactor of the individual well of the present embodiment when in use, underground equipment is arranged in well, tool Body installation process are as follows:
First according to local geology and hydrogeology condition, the thickness of aquifer, roof and floor are primarily determined Depth investigates the concentration of different water cut layer groundwater azotate.In drilling process, water-bearing layer is further appraised and decided according to core Characteristic and position.
Then, outer well tube, and the corresponding position according to the position in water-bearing layer in upper step on the tube wall of outer well tube are installed Aperture forms inlet opening respectively.
Then, well casing in installing, the interior well casing that diameter is less than outer well tube is placed in outer well tube, so that interior well casing is mounted on Inside outer wall casing, well casing bottom is embedded into basalt.
Then, PRB material is filled, fills PRB material in the cyclic annular cylinder space formed between outer well tube and interior well casing, When filling PRB material, using special filling device, prevent the waterpower sorting of PRB material.
The material of the outer well tube is iron pipe, for the wall protection pipe of water-permeable pipe and Quaternary Strata as water-bearing layer, and And gravel pellet is filled between the outer well tube and stratum.
In the present embodiment, it is preferable that the drainage hole is opened at the tube wall bottommost artesian aquifer position of interior well casing, And the material of the interior well casing is also iron pipe, and lower end is embedded into basalt.
When PRB clad to be filled in interior well casing and outer well tube, the PRB clad includes non-woven fabrics and package PRB material in non-woven fabrics, and by the way that the non-woven fabrics for being enclosed with PRB material to be filled between outer well tube and interior well casing, To prevent the waterpower of RPB material from sorting.
At this point, the inlet opening that underground water passes through outer well tube first enters PRB clad, passed through from top to bottom in PRB clad Cross it is certain cross water route after, by the drainage hole of interior well casing bottom flow into well casing so that all water bodys and PRB are coated Layer has carried out sufficient haptoreaction, and effluent quality is protected.
The soil surface treatment device includes water inlet pipe and drainpipe and the filter core that is connected to the water inlet pipe and drainpipe Module, in the present embodiment, the filter core module is arranged in parallel, and caliber is adjustable, when removing material and needing replacing, is individually replaced filter Core module can replace the filter core module of Large Diameter Pipeline when flow velocity is larger.
In the present embodiment, the filter core module includes pipeline and the filler that is filled in the pipeline, and the filler can be with Material is adsorbed for active carbon or haydite etc., one end of the pipeline is connected to the water inlet pipe, and the other end is connected to drainpipe.
The interior well casing of the water inlet pipe and underground equipment connects, and is provided with flow detector and out water control on the water inlet pipe Valve processed, to control water discharge speed, when the flow velocity that draws water is smaller, water body and processing material have sufficient time of contact, use tubule The single tube module of diameter；When the flow velocity that draws water is larger, the length of processing material is increased, when can increase water body and processing material Between, to achieve the effect that most preferably to remove secondary product.
The built-in permeable reactor of the individual well of the utility model uses the device in situ of " Jing Zhongjing ", contaminated Water body passes through outer well tube first and enters PRB clad, by wall casing position of opening in designing, controls water body in PRB clad In cross water route, can be realized in a wellhole control water body and PRB clad time of contact, without excessive The thickness for increasing hole diameter either PRB clad passes through only by means of gravity and the superiority condition of well own depth Permeable hole is opened in the bottom of interior well casing, so that the water body of the different pollution concentrations of different water cut layer is had different water routes excessively, thus greatly It is big to reduce project amount, reduce engineering construction difficulty, reduces construction investment.
Secondly, the utility model also designs soil surface treatment device in the water intaking well head of earth's surface, primarily directed to removal in situ Nitrogen cycle is easy to generate the secondary water body purification of the harmful substances such as ammonia nitrogen and nitrite progress during nitrate, at earth's surface Reason device (secondary treatment system) is mainly used for removing ammonia nitrogen and nitrite, carries out water treatment and purification in underground water well Afterwards, the related substances of Water, such as nitrate, nitrite and ammonia nitrogen all obtain effectively removing and controlling, three kinds of objects The concentration of matter reaches III class standard of groundwater quality.
The present embodiment is suitable for being lauched azotate pollution area in large area, different for different water cut layer pollution condition, into The pre-processing of capable centralization or water dispersion type water head site, after the pretreatment of the system, nitrate in underground water, Nitrite and ammonia nitrogen concentration reach III class standard of groundwater quality.
In the present embodiment, the length of PRB clad can be controlled according to the concentration of local groundwater azotate, i.e., The water route excessively being lauched in PRB clad can be controlled by inner tube hole location, increase time of contact；When agricultural planting is excessive When causing underground water nitrogen content to increase using chemical fertilizer, for the concentration of nitrate in groundwater in underground reservoir difference, top is aqueous The concentration of layer nitrate is higher, catharsis of the lower part artesian aquifer due to stratum itself, the concentration of groundwater azotate Lower, i.e. the nitrate concentration of deep water in confined is lower, and the present embodiment realizes the underground water in top water-bearing layer by PRB packet The underground water of the path length of coating, lower part water-bearing layer is relatively short by the path of PRB clad, i.e. the water of high concentration nitrate Body and PRB clad reaction time are long, and the water body of low concentration groundwater azotate and PRB clad reaction time are short, really real Show in single wellhole for the efficient removal of different water cut layer nitrate concentration variation.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc. With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (7)

1. a kind of built-in permeable reactor of individual well, which is characterized in that including underground equipment；
The underground equipment includes outer well tube, interior well casing and PRB clad, and interior well pipe sleeve is set in outer well tube, and PRB clad It is set between the outer well tube and interior well casing；
Wherein, the position on the tube wall of the outer well tube relative to underground different water cut layer offers multiple inlet openings, described interior The tube wall lower end of well casing offers multiple drainage holes.
2. the built-in permeable reactor of individual well according to claim 1, which is characterized in that the outer well tube and interior well casing It is arranged concentrically.
3. the built-in permeable reactor of individual well according to claim 1, which is characterized in that in the drainage hole is opened in At the tube wall bottommost artesian aquifer position of well casing.
4. the built-in permeable reactor of individual well according to claim 1, which is characterized in that under the PRB clad End is lower than the water-bearing layer of the bottom, and the upper end of the PRB clad is higher than the water-bearing layer of top layer.
5. the built-in permeable reactor of individual well according to claim 1, which is characterized in that further include soil surface treatment dress It sets, the soil surface treatment device includes water inlet pipe and drainpipe and the filter core module that is connected to the water inlet pipe and drainpipe, The filter core module is arranged in parallel.
6. the built-in permeable reactor of individual well according to claim 5, which is characterized in that the filter core module includes pipe Road and the filler being filled in the pipeline, the filler are active carbon or haydite, one end of the pipeline and the water inlet Pipe connection, the other end are connected to drainpipe.
7. the built-in permeable reactor of individual well according to claim 6, which is characterized in that be provided on the water inlet pipe Flow detector and outlet water control valve.
CN201920010895.5U 2018-10-29 2019-01-04 The built-in permeable reactor of individual well Active CN209352622U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109516548A (en) * 2018-10-29 2019-03-26 山东省水利科学研究院 The built-in permeable reactor of individual well
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3872030A1 (en) 2020-02-26 2021-09-01 Acondicionamiento Tarrasense Process for preparing mesoporous carbon material

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DE4138414C2 (en) * 1991-11-22 1993-10-07 Ieg Ind Engineering Gmbh Arrangement for cleaning contaminated groundwater
JPH1060957A (en) * 1996-08-21 1998-03-03 Oyo Corp Aquifer cutoff construction method for existing well
CN105060520B (en) * 2015-08-11 2017-05-31 中国环境科学研究院 A kind of internal-circulation type groundwater remediation device and method
CN109516548A (en) * 2018-10-29 2019-03-26 山东省水利科学研究院 The built-in permeable reactor of individual well

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109516548A (en) * 2018-10-29 2019-03-26 山东省水利科学研究院 The built-in permeable reactor of individual well
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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