CN111733890A - Polluted underground water blocking treatment method - Google Patents
Polluted underground water blocking treatment method Download PDFInfo
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- CN111733890A CN111733890A CN202010595888.3A CN202010595888A CN111733890A CN 111733890 A CN111733890 A CN 111733890A CN 202010595888 A CN202010595888 A CN 202010595888A CN 111733890 A CN111733890 A CN 111733890A
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- polluted
- underground water
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- barrier
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a polluted underground water blocking treatment method, which comprises the following steps: defining a polluted underground water area, and arranging vertical separation walls around the polluted underground water area for vertical separation; distributing a certain number of pumping wells in a polluted site, and pumping polluted underground water to the ground through a water pump and the water wells for pretreatment; after the polluted underground water is extracted and treated, the polluted soil or sludge in the polluted underground water area is dug, after the digging is finished, a barrier layer is laid in the underwater soil in the polluted underground water area to block the way of migration and diffusion of pollutants in soil media, the polluted area is horizontally blocked, the polluted media are isolated from the surrounding environment, then the dug area is backfilled with clay, the thickness of the covered clay is equivalent to the depth of the digging, and the pollutants are prevented from contacting with human bodies and migrating along with rainfall or underground water. The method for barrier treatment of polluted underground water is used for emergency treatment of polluted soil and underground water, and further diffusion of pollution is avoided.
Description
Technical Field
The invention relates to the technical field of groundwater pollution treatment, in particular to a polluted groundwater blocking treatment method.
Background
At present, due to the shortage of environmental protection in early industrial development, the problem of pollution of soil and underground water occurs in some places, the polluted soil influences the normal growth of crops and the life of the masses, and the polluted soil can further pollute the underground water. Therefore, the polluted soil and the underground water are treated to reduce the damage caused by pollution, but the treatment of the polluted soil and the underground water needs a longer time. Therefore, an emergency treatment is generally required to be firstly adopted to perform an emergency control on the polluted area, so as to avoid further diffusion of pollution.
Disclosure of Invention
The invention aims to provide a polluted underground water barrier treatment method which is used for carrying out emergency treatment on polluted soil and underground water and avoiding further diffusion of pollution.
In order to achieve the purpose, the invention provides the following technical scheme: a barrier treatment method for polluted underground water comprises the following steps:
(1) defining a polluted underground water area, and arranging vertical separation walls around the polluted underground water area for vertical separation;
(2) distributing a certain number of pumping wells in a polluted site, pumping polluted underground water to the ground through a water pump and a water well for filtering pretreatment, and conveying the pretreated underground water to an industrial sewage treatment plant for disposal;
(3) after the polluted underground water is extracted and treated, the polluted soil or sludge in the polluted underground water area is dug, after the digging is finished, a barrier layer is laid in the underwater soil in the polluted underground water area to block the way of migration and diffusion of pollutants in soil media, the polluted area is horizontally blocked, the polluted media are isolated from the surrounding environment, then the dug area is backfilled with clay, the thickness of the covered clay is equivalent to the depth of the digging, and the pollutants are prevented from contacting with human bodies and further causing harm to the human bodies and the surrounding environment along with the migration of the pollutants or the underground water.
Preferably, the depth of the barrier wall is greater than the pollution depth of the groundwater pollution area.
Preferably, the barrier layer comprises a geomembrane.
Preferably, the upper end of the vertical barrier wall is 10-20cm higher than the contaminated groundwater zone.
Preferably, the vertical barrier wall is provided with a geomembrane.
Preferably, the groundwater after the filtration pretreatment is subjected to a treatment for removing non-aqueous phase substances, so as to reduce non-aqueous phase pollutants.
Preferably, a surfactant is added to the pumped groundwater to promote dissolution of the non-aqueous phase material.
Compared with the prior art, the invention has the beneficial effects that: the method for separating and treating the polluted underground water is used for emergency treatment of the polluted soil and the underground water, the polluted soil or the underground water is dug by arranging the separation wall and the polluted soil or the sludge, and then the separation layer is paved in the underwater soil of the polluted underground water area, so that the vertical separation and the horizontal separation can be carried out on the polluted underground water area, and the further diffusion of pollution is avoided.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The embodiment provided by the invention comprises the following steps:
a barrier treatment method for polluted underground water comprises the following steps:
(1) defining a polluted underground water area, and arranging vertical separation walls around the polluted underground water area for vertical separation;
(2) distributing a certain number of pumping wells in a polluted site, pumping polluted underground water to the ground through a water pump and a water well for filtering pretreatment, and conveying the pretreated underground water to an industrial sewage treatment plant for disposal;
(3) after the polluted underground water is extracted and treated, the polluted soil or sludge in the polluted underground water area is dug, after the digging is finished, a barrier layer is laid in the underwater soil in the polluted underground water area to block the way of migration and diffusion of pollutants in soil media, the polluted area is horizontally blocked, the polluted media are isolated from the surrounding environment, then the dug area is backfilled with clay, the thickness of the covered clay is equivalent to the depth of the digging, and the pollutants are prevented from contacting with human bodies and further causing harm to the human bodies and the surrounding environment along with the migration of the pollutants or the underground water.
Preferably, the depth of the barrier wall is greater than the pollution depth of the groundwater pollution area.
Preferably, the barrier layer comprises a geomembrane.
Preferably, the upper end of the vertical barrier wall is 10-20cm higher than the contaminated groundwater zone.
Preferably, the vertical barrier wall is provided with a geomembrane.
Preferably, the groundwater after the filtration pretreatment is subjected to a treatment for removing non-aqueous phase substances, so as to reduce non-aqueous phase pollutants.
Preferably, a surfactant is added to the pumped groundwater to promote dissolution of the non-aqueous phase material.
In operation, emergency risk management and control are carried out on a certain underground water pollution area in a horizontal blocking and vertical blocking mode. And setting a risk control mode of a barrier wall at the boundary of the underground water risk barrier area for vertical barrier before the cleaning and digging of the polluted soil and the extraction and disposal of the underground water. And pumping underground water for treatment, after the polluted soil and the non-polluted soil with the elevation of yellow sea more than-0.924 m in the underground water remediation area are dug, backfilling clay, and covering a geomembrane at the bottom of a polluted layer for horizontal separation. The extraction area of the polluted area and the groundwater polluted area of the surrounding land is about 6978 m2(high contamination region 1972m2General contaminated area 5006m2) About 35197 m3(ii) a Horizontal + vertical barrier region about 6978 m2。
By adopting the polluted underground water blocking treatment method, the risk potential of polluted underground water in the local block area is effectively cleared in time, and the influence on the surrounding blocks and the environment is effectively controlled.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A barrier treatment method for polluted underground water is characterized by comprising the following steps:
(1) defining a polluted underground water area, and arranging vertical separation walls around the polluted underground water area for vertical separation;
(2) distributing a certain number of pumping wells in a polluted site, pumping polluted underground water to the ground through a water pump and a water well for filtering pretreatment, and conveying the pretreated underground water to an industrial sewage treatment plant for disposal;
(3) after the polluted underground water is extracted and treated, the polluted soil or sludge in the polluted underground water area is dug, after the digging is finished, a barrier layer is laid in the underwater soil in the polluted underground water area to block the way of migration and diffusion of pollutants in soil media, the polluted area is horizontally blocked, the polluted media are isolated from the surrounding environment, then the dug area is backfilled with clay, the thickness of the covered clay is equivalent to the depth of the digging, and the pollutants are prevented from contacting with human bodies and further causing harm to the human bodies and the surrounding environment along with the migration of the pollutants or the underground water.
2. A barrier treatment method for polluted groundwater according to claim 1, wherein: the depth of the barrier wall is greater than the pollution depth of the underground water pollution area.
3. A barrier treatment method for polluted groundwater according to claim 1, wherein: the barrier layer comprises a geomembrane.
4. A barrier treatment method for polluted groundwater according to claim 1, wherein: the upper end of the vertical barrier wall is 10-20cm higher than the polluted underground water area.
5. A barrier treatment method for polluted groundwater according to claim 1, wherein: and a geomembrane is laid on the vertical separation wall.
6. A barrier treatment method for polluted groundwater according to claim 1, wherein: and (4) carrying out treatment for removing non-aqueous phase substances on the underground water subjected to filtering pretreatment, so as to reduce non-aqueous phase pollutants.
7. A barrier treatment method for polluted groundwater according to claim 6, wherein: and adding a surfactant into the pumped underground water to promote the dissolution of the non-aqueous phase substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595888.3A CN111733890A (en) | 2020-06-28 | 2020-06-28 | Polluted underground water blocking treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595888.3A CN111733890A (en) | 2020-06-28 | 2020-06-28 | Polluted underground water blocking treatment method |
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| Publication Number | Publication Date |
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| CN111733890A true CN111733890A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010595888.3A Pending CN111733890A (en) | 2020-06-28 | 2020-06-28 | Polluted underground water blocking treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820383A (en) * | 2021-09-13 | 2021-12-21 | 生态环境部华南环境科学研究所 | Waste resin powder piling point soil pollution risk control method based on covering and blocking technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185957A (en) * | 2017-06-22 | 2017-09-22 | 华东师范大学 | A kind of soil repair system of quick improvement soil organic matter and heavy metal |
| CN107720853A (en) * | 2017-11-20 | 2018-02-23 | 中国环境科学研究院 | DNAPL pollution amelioration system and method in underground water based on pollution resistance control |
| CN208219685U (en) * | 2018-04-17 | 2018-12-11 | 山东宇尚节能环保科技有限公司 | A kind of biological prosthetic leakage preventing structure of petroleum hydrocarbon contaminated soil |
| CN109675919A (en) * | 2019-01-24 | 2019-04-26 | 圣清环保股份有限公司 | A kind of preparation and elution engineering practice method in situ of heavy metal pollution of soil leacheate |
-
2020
- 2020-06-28 CN CN202010595888.3A patent/CN111733890A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185957A (en) * | 2017-06-22 | 2017-09-22 | 华东师范大学 | A kind of soil repair system of quick improvement soil organic matter and heavy metal |
| CN107720853A (en) * | 2017-11-20 | 2018-02-23 | 中国环境科学研究院 | DNAPL pollution amelioration system and method in underground water based on pollution resistance control |
| CN208219685U (en) * | 2018-04-17 | 2018-12-11 | 山东宇尚节能环保科技有限公司 | A kind of biological prosthetic leakage preventing structure of petroleum hydrocarbon contaminated soil |
| CN109675919A (en) * | 2019-01-24 | 2019-04-26 | 圣清环保股份有限公司 | A kind of preparation and elution engineering practice method in situ of heavy metal pollution of soil leacheate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820383A (en) * | 2021-09-13 | 2021-12-21 | 生态环境部华南环境科学研究所 | Waste resin powder piling point soil pollution risk control method based on covering and blocking technology |
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Application publication date: 20201002 |
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