CN110106860A - A method of taking into account heavy metal polluted soil ground restoration and discharging consolidation processing - Google Patents
A method of taking into account heavy metal polluted soil ground restoration and discharging consolidation processing Download PDFInfo
- Publication number
- CN110106860A CN110106860A CN201910266430.0A CN201910266430A CN110106860A CN 110106860 A CN110106860 A CN 110106860A CN 201910266430 A CN201910266430 A CN 201910266430A CN 110106860 A CN110106860 A CN 110106860A
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- CN
- China
- Prior art keywords
- heavy metal
- polluted soil
- drain pipe
- taking
- horizontal drain
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a kind of methods for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing, comprising the following steps: (1) work layer is arranged；(2) sand bedding course is laid in work layer；(3) drain bar is set；(4) drain bar wrench jointing casing, then it is connected to horizontal drain pipe, every two column drain bar configures a horizontal drain pipe；(5) heavy metal is configured in container and be passivated medicament, reconnect horizontal drain pipe；(6) chemical agent is discharged, polluted soil subgrade heavy metal is passivated；(7) it extracts horizontal drain pipe and is connected to vacuum pump again；(8) paving sealing film, starts vacuum pump, implements to reinforce to ground.The present invention can combine two kinds of techniques of Polluted Soil processing and foundation stabilization, can not only reduce processing cost, shorten the construction time, improve construction efficiency, effectively solve the processing problem of Polluted Soil, have a vast market foreground.
Description
Technical field
The present invention relates to soil remediation and the technical fields of basement process, and in particular to heavy metal polluted soil in-situ passivation is repaired
Multiple and discharging consolidation treatment of soft foundation method.
Background technique
For a long time, since China's Economic Development Mode is extensive, the rapid development of industrial and agricultural production, so that heavy metal-polluted soil
Pollution problem becomes increasingly conspicuous.China's soil environment situation form is severe, and the total point exceeding standard rate of national soil is 16.1%, wherein
Exceeded digit of inorganic pollution accounts for the 82.8% of all exceeded points, and inorganic pollution is mainly heavy metal contaminants, soil
Heavy metal pollution not only breaks up ecological environment, reduces crop yield, has also seriously endangered the health of human body.
In-situ passivation reparation is that current heavy metal-polluted soil is administered and applies most reclamation activities, mainly by heavy metal
The passivation renovation agent such as some active materials is added in contaminated soil, by the way that absorption, precipitating, complexing, ion exchange, oxidation occurs also
The chemical reaction of a series of physical such as original adjusts and changes physics, chemical property and the occurrence patterns of heavy metal in the soil, reduces
Its migration, biological effectiveness and toxicity in the soil, to reduce heavy metal to the stress of geobiont and in the soil
Migration accumulation, achieve the purpose that safe utilization and risk management and control.
Heavy metal pollution soft soil foundation will also carry out at ground it in addition to carry out in-situ passivation reparation to it
Reason, typical is exactly to improve its bearing capacity using draining concretion method.And environment remediation and foundation treatment engineering measure are two at present
The step of a segmentation, needs two sets of different processing equipments and individually repair time and cost, leads to higher cost.Cause
The reparation of heavy metal in-situ passivation and the processing of soft base discharging consolidation are combined together by this, and dirt can either be effectively reduced by obtaining one kind
Native content of beary metal, while the method that can be improved load-carrying capacity of soft soil foundation again are contaminated, improvement and processing cost can be not only reduced,
Shorten the construction time, improve construction efficiency, has great importance to the effective improvement and recycling of realizing heavy metal polluted soil,
And market application prospect is wide.
Summary of the invention
In-situ passivation reparation can be carried out to heavy metal pollution soil base the purpose of the present invention is to provide one kind to carry out simultaneously
The method of discharging consolidation processing.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A method of taking into account heavy metal polluted soil ground restoration and discharging consolidation processing, comprising the following steps:
(1) has the work layer of bearing capacity in contaminated land primary surface setting to be processed；
(2) construction machinery walks in operation layer surface, and sand bedding course is laid in work layer；
(3) vertical drainage plate is set into foundation soil body to be processed；
(4) drain bar wrench jointing casing, then it is connected to horizontal drain pipe, every two column drain bar configures a horizontal row
Water pipe；
(5) on ground, setting heavy metal is passivated medicine container and vacuum pump passes through delivery main respectively and is connected to horizontal drainage
Pipe；
(6) chemical agent is discharged, the transfer pipeline of connection container to horizontal drain pipe disconnects vacuum pump to horizontal drain pipe
Delivery pipe, chemical agent along vertical drainage plate penetrate into polluted soil subgrade carry out heavy metal passivation reaction；
(7) after passivation reaction, the transfer pipeline of container to horizontal drain pipe, connection vacuum pump to horizontal drainage are disconnected
The transfer pipeline of pipe, vacuumizes；
(8) paving sealing film, starts vacuum pump, implements to reinforce to ground.
The work layer constituent material includes bamboo frame, chaste tree fragrant plant, TGXG, geotextiles.
The sand bedding course is made of Extra-fine sand or medium coarse sand.
The vertical drainage plate selects the plastic draining board of cross core plate, outsourcing filter membrane.
The swagelok has a tubular body, and the both ends of tubular body are socketed with horizontal drain pipe respectively, tubulose master
The two sides of body are equipped with the flat flank with hollow cavity, and flank is socketed on drain bar wrench, the inner cavity of flank and tubulose master
Intracoelomic cavity connection.
The horizontal drain pipe by multistage pvc pipe by multiple swagelok continued accesses together.
The heavy metal passivation medicine container has multiple.
The heavy metal passivation medicament is charcoal or lime or organic fertilizer.
The present invention provides a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing, application is same
Set equipment is effectively reduced Polluted Soil content of beary metal by intersection process and improves load-carrying capacity of soft soil foundation, synchronous to realize a huge sum of money
Belong to and repairing and two purposes for the treatment of of soft foundation.Compare two kinds of independent techniques of existing heavy metal reparation and treatment of soft foundation, side of the present invention
Method combines the two, can not only reduce improvement and processing cost, shortens the construction time, raising construction efficiency, and simple process,
It is easy to spread, practicability is high.
In the method for the invention, vertical drainage plate can squeeze into more than ten meters of deeper positions of the soil body, so that heavy metal is passivated
Reagent can deeply repair deep layer and pollute the soil body, and the shallow-layer soil body can only be repaired by substantially breaching existing heavy metal in-situ passivation technology
Bottleneck.After having repaired heavy metal, drain bar may continue to be applied to draining concretion method progress treatment of soft foundation, improve its ground
Base bearing capacity has further expanded the range of place later use.
Detailed description of the invention
Fig. 1 is the technology section signal that a kind of heavy metal polluted soil ground in-situ passivation repairs united drainage consolidation process
Figure.
Fig. 2 is the floor map of horizontal drain pipe arrangement in sand bedding course.
Fig. 3 a is the floor map of swagelok 5.
Fig. 3 b is the A-A diagrammatic cross-section of swagelok 5.
Fig. 3 c is the B-B diagrammatic cross-section of swagelok 5.
Wherein: 1- polluted soil subgrade, 2- vertical drainage plate, 3- work layer, 4- sand bedding course, 5- swagelok, 5.1- flank,
5.2- tubular body, 6- horizontal drain pipe, 7- medicine container, 8- geomembrane, 9- vacuum pump.
Specific embodiment
The present invention is implemented according to the following steps:
(1) have the work layer 3 of bearing capacity in 1 surface of polluted soil subgrade setting to be processed, be laid with one layer of braiding first
Cloth re-lays one layer of TGXG, to form the work layer 3 for having certain bearing capacity；
(2) construction machinery walks in operation layer surface, sand bedding course 4 is laid in work layer, sand bedding course thickness is by related rule
Model requirement；
(3) vertical drainage plate 2 is set on sand bedding course 4, vertical drainage plate is arranged at regular intervals (0.8~1.0m),
Plane forms quadrate array；
(4) 2 wrench jointing casing 5 of drain bar, swagelok 5 have a tubular body as shown in Fig. 3 a~3c
5.2, the both ends of tubular body are socketed with horizontal drain pipe 6 respectively, and the side wall of tubular body offers long and narrow in relative position
Oblong openings, the flank with hollow cavity are each extended over from oblong openings to two outsides, the inner cavity of flank and tubulose master
Intracoelomic cavity connection.Flank is socketed on the wrench of drain bar 2.One swagelok, 5 liang of flanks are separately connected two drain bars 2, set
Pipe gets up front and back section 6 continued access of horizontal drain pipe, forms the arrangement of a horizontal pipeline 6 among two file drain bar 2；
(5) container 7 and vacuum pump 9 are set on the ground.Configuration heavy metal is passivated medicament in container 7, then total by conveying
Pipe connects horizontal drain pipe 6；
(6) interface channel of container 7 and horizontal drain pipe is connected, and disconnects vacuum pump and horizontal drain pipe.Releaseization
Medicament is learned, medicament penetrates into polluted soil subgrade 1 along vertical drainage plate 2 by medicine container 7 to horizontal drain pipe 6, makes its heavy metal
Passivation, achievees the purpose that pollution control；
(7) after passivation reaction, the delivery main of connection reagent container is extracted, then is connected to vacuum pump 9；
(8) paving sealing film 8, starts vacuum pump 9, implements to reinforce to ground, ground is made to reach certain bearing capacity.
Claims (8)
1. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing, comprising the following steps:
(1) has the work layer of bearing capacity in contaminated land primary surface setting to be processed；
(2) construction machinery walks in operation layer surface, and sand bedding course is laid in work layer；
(3) vertical drainage plate is set into foundation soil body to be processed；
(4) drain bar wrench jointing casing, then it is connected to horizontal drain pipe, every two column drain bar configures a horizontal drainage
Pipe；
(5) on ground, setting heavy metal is passivated medicine container and vacuum pump passes through delivery main respectively and is connected to horizontal drain pipe；
(6) chemical agent is discharged, it is defeated to horizontal drain pipe to disconnect vacuum pump for the transfer pipeline of connection container to horizontal drain pipe
Pipe is sent, chemical agent penetrates into polluted soil subgrade along vertical drainage plate and carries out heavy metal passivation reaction；
(7) after passivation reaction, the transfer pipeline of container to horizontal drain pipe, connection vacuum pump to horizontal drain pipe are disconnected
Transfer pipeline vacuumizes；
(8) paving sealing film, starts vacuum pump, implements to reinforce to ground.
2. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the work layer constituent material includes bamboo frame, chaste tree fragrant plant, TGXG, geotextiles.
3. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the sand bedding course is made of Extra-fine sand or medium coarse sand.
4. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the vertical drainage plate selects the plastic draining board of cross core plate, outsourcing filter membrane.
5. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the swagelok has a tubular body, and the both ends of tubular body are socketed with horizontal drain pipe respectively, tubulose master
The two sides of body are equipped with the flat flank with hollow cavity, and flank is socketed on drain bar wrench, the inner cavity of flank and tubulose master
Intracoelomic cavity connection.
6. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the horizontal drain pipe by multistage pvc pipe by multiple swagelok continued accesses together.
7. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the heavy metal passivation medicine container has multiple.
8. a kind of method for taking into account heavy metal polluted soil ground restoration and discharging consolidation processing according to claim 1,
Be characterized in that: the heavy metal passivation medicament is charcoal or lime or organic fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910266430.0A CN110106860B (en) | 2019-04-03 | 2019-04-03 | Method for repairing heavy metal polluted soil foundation and treating drainage consolidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910266430.0A CN110106860B (en) | 2019-04-03 | 2019-04-03 | Method for repairing heavy metal polluted soil foundation and treating drainage consolidation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110106860A true CN110106860A (en) | 2019-08-09 |
| CN110106860B CN110106860B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910266430.0A Active CN110106860B (en) | 2019-04-03 | 2019-04-03 | Method for repairing heavy metal polluted soil foundation and treating drainage consolidation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505291A (en) * | 2020-11-13 | 2021-03-16 | 河海大学 | Test device and method for heavy metal precipitation and solidification of river and lake bottom mud and foundation reinforcement |
| CN116116891A (en) * | 2023-04-10 | 2023-05-16 | 河北大美环境修复科技股份有限公司 | Soil remediation device with even function of dosing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372406A (en) * | 2011-10-13 | 2012-03-14 | 长沙理工大学 | Heavy-metal-polluted substrate sludge ex-situ repairing method |
| CN102733371A (en) * | 2012-07-18 | 2012-10-17 | 王军 | Closed direct-sucking sectional vacuum preloading foundation treatment method |
| CN105668987A (en) * | 2016-01-14 | 2016-06-15 | 同济大学 | Sludge conditioner and in situ dewatering treatment method by use of sludge conditioner |
| CN105804045A (en) * | 2016-03-29 | 2016-07-27 | 江苏鸿基水利建设工程有限公司 | Equipment for strengthening deep soft soil foundation by vacuum preloading of filter well and method |
-
2019
- 2019-04-03 CN CN201910266430.0A patent/CN110106860B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372406A (en) * | 2011-10-13 | 2012-03-14 | 长沙理工大学 | Heavy-metal-polluted substrate sludge ex-situ repairing method |
| CN102733371A (en) * | 2012-07-18 | 2012-10-17 | 王军 | Closed direct-sucking sectional vacuum preloading foundation treatment method |
| CN105668987A (en) * | 2016-01-14 | 2016-06-15 | 同济大学 | Sludge conditioner and in situ dewatering treatment method by use of sludge conditioner |
| CN105804045A (en) * | 2016-03-29 | 2016-07-27 | 江苏鸿基水利建设工程有限公司 | Equipment for strengthening deep soft soil foundation by vacuum preloading of filter well and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505291A (en) * | 2020-11-13 | 2021-03-16 | 河海大学 | Test device and method for heavy metal precipitation and solidification of river and lake bottom mud and foundation reinforcement |
| CN116116891A (en) * | 2023-04-10 | 2023-05-16 | 河北大美环境修复科技股份有限公司 | Soil remediation device with even function of dosing |
| CN116116891B (en) * | 2023-04-10 | 2023-06-30 | 河北大美环境修复科技股份有限公司 | Soil remediation device with even function of dosing |
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| CN110106860B (en) | 2022-04-15 |
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