CN105821909A - Tree-like refuse leachate generated in landfill construction and closure as well as landfill gas guide and exhaust system and method - Google Patents
Tree-like refuse leachate generated in landfill construction and closure as well as landfill gas guide and exhaust system and method Download PDFInfo
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- CN105821909A CN105821909A CN201610337916.5A CN201610337916A CN105821909A CN 105821909 A CN105821909 A CN 105821909A CN 201610337916 A CN201610337916 A CN 201610337916A CN 105821909 A CN105821909 A CN 105821909A
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- gas
- landfill
- vertical shaft
- water guide
- gas collection
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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
-
- 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
- E02D31/006—Sealing of existing landfills, e.g. using mining techniques
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a tree-like refuse leachate generated in landfill construction and closure as well as a landfill gas guide and exhaust system and method. The landfill gas guide and exhaust system comprises gabions, gas collecting shafts, horizontal branch gas collecting pipes, water guide blind ditches and a leachate collecting device, wherein the gas collecting shafts are arranged according to the slopes of a backfilling units of a refuse landfill and are enabled to be parallel to the axes of refuse dump backfilling units; one layer of branch gas collecting pipe is paved on every 1-2 backfilling units, and the branch gas collecting pipes communicate with the gas collecting shafts; the water guide blind ditches are arranged in a dump in a layered way, and every two adjacent layers of water guide blind ditches are communicated through the vertically arranged gabions; and the gas collecting shafts communicate with each layer of water guide blind ditch through the gabions. A tree-like guide and exhaust system is established for landfill gas and leachate according to the structure of the refuse landfill, the landfill gas and the leachate are connected and crossed by using pipelines, the arrangement of the water guide blind ditches in the vertical direction is omitted due to the communication of the gas collecting shafts and the water guide blind ditches, so that the collecting efficiencies of the landfill gas and the leachate are increased, meanwhile, the investment cost is reduced, and the landfill gas guide and exhaust system is safe and simple in operation.
Description
Technical field
The present invention relates to a kind of refuse landfill guide technology, be specifically related to a kind of tree-shaped percolate improving collection efficiency and landfill gas guide system and method.
Background technology
Percolate and landfill gas are used separate system to be collected by major part refuse landfill at present, and cost of investment is relatively large.And landfill gas is processed to be usually and uses the method for drilling well to set up landfill vertical shaft by landfill yard, have does not lays gas-collecting branch pipe, the gas-collecting branch pipe of some laying levels, uses facility of bleeding to bleed.Not laying the mode of gas-collecting branch pipe makes gas collecting efficiency more low, lay in the mode of level set gas branch pipe can make level set gas branch pipe the percolate collecting and produce can not effectively guide, affect effect of bleeding.
Summary of the invention
Goal of the invention: present invention aim at providing a kind of percolate and landfill gas guide system and method, do not affect, while improving percolate and landfill-gas collecting efficiency, effect of bleeding.
Technical scheme: one of the present invention tree-shaped rubbish landfill gas guide system and method, including gabion, gas collection vertical shaft, level set gas branch pipe, water guide french drain and leachate collecting device；Gas collection vertical shaft is installed according to the gradient of refuse landfill landfill unit so that it is with the axis parallel of junk-heap body landfill unit；Level set gas branch pipe regards the thickness of landfill unit and lays, and every 1 ~ 2 landfill unit lays one layer of gas-collecting branch pipe, and gas-collecting branch pipe connects with gas collection vertical shaft, the gradient 1% ~ 6%；Water guide french drain is layered setting in heap body, and adjacent two layers water guide french drain is connected by vertically-mounted gabion；Gas collection vertical shaft is connected with every layer of water guide french drain by gabion.
Preferably, arranging gabion outside described gas collection vertical shaft and water guide french drain, use graded gravel or rubble in gabion, particle diameter is 10mm ~ 100mm.One layer of preferable geotextiles of water penetration is laid outside gabion.
Preferably, described water guide french drain lower berth impervious barrier, prevent leachate contamination subsoil water or under be seeped in the landfill unit of next layer.
Preferably, described gas collection vertical shaft caliber is not less than 600mm, and installing the gradient is 80% ~ 95%, and pipeline uses slidingtype to connect so that it is can bear and ambient temperature can not rise the immense pressure that high factor produces in the sedimentation of degree, side load and landfill yard.
Preferably, described gas collection vertical shaft inter-well distance is 10 ~ 50 meters, and the gas collection vertical shaft spacing in the middle part of junk-heap body is 20 ~ 50 meters, and the gas collection vertical shaft spacing arranged along heap body edge is 10 ~ 25 meters.
Preferably, described gas collection shaft top is provided with landfill gas outlet, arranges gas transmission connecting pipe and detection sample tap, gets up to process or utilize by landfill-gas collecting.With junk-heap body cover layer infall, take closing measure, reduce the infiltration of rainwater.
Preferably, described level set gas branch pipe caliber is 100mm ~ 500mm, and installing the gradient is 5% ~ 20%, is cladded with graded broken stone, while increasing breathability, has unloaded top junk-heap body and the fractional load of other reason generation, has extended the service life of level set gas branch pipe.
Preferably, every 1 ~ 2 landfill unit lays one layer of level set gas branch pipe, and level set gas branch pipe uses with gas collection vertical shaft and flexibly connects, the impact caused during to compensate junk-heap body differential settlement.
Preferably, the percolate that described level set gas branch pipe and its outer graded broken stone layer are collected collects bottom water guide french drain by gas collection vertical shaft.
Beneficial effect: the present invention establishes tree-shaped guide system according to the structure of refuse landfill to landfill gas and percolate, the two has pipeline to connect intersection, the water guide french drain being collected percolate also functions to the effect of inducing QI french drain simultaneously, and the percolate collected in level set gas branch pipe is flow in the water guide french drain of bottom certainly by gas collection vertical shaft.Gas collection vertical shaft eliminates the setting at vertical direction of the water guide french drain with the connection of water guide french drain, while improve the collection efficiency of landfill gas and percolate, reduces cost of investment, and job safety is simple.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: 1-leachate collecting device；2-water guide french drain；3-impervious barrier；4-graded gravel；5-junk-heap body landfill unit；6-gabion；7-gas collection vertical shaft；8-level set gas branch pipe；9--gas transmission connecting pipe；10-detects sample tap.
Detailed description of the invention
Describe the present invention below in conjunction with the accompanying drawings in detail.
A kind of tree-shaped rubbish landfill gas guide system and method, including gabion 6, gas collection vertical shaft 7, level set gas branch pipe 8, water guide french drain 2 and leachate collecting device 1；Gas collection vertical shaft 7 is installed according to the gradient of refuse landfill landfill unit 5 so that it is with the axis parallel of junk-heap body landfill unit 5；Level set gas branch pipe 8 regards the thickness of landfill unit 5 and lays, and every 1 ~ 2 landfill unit lays one layer of level set gas branch pipe 8, and level set gas branch pipe 8 connects with gas collection vertical shaft 7, the gradient 1% ~ 6%；Water guide french drain 2 is layered setting in heap body, and adjacent two layers water guide french drain is connected by vertically-mounted gabion 6；Gas collection vertical shaft 7 is connected with every layer of water guide french drain by gabion.
Described water guide french drain 2 overlying graded gravel 4, particle diameter is 10mm ~ 100mm, wraps up in gabion wire gauze, one layer of preferable geotextiles of water penetration of upper laying, alleviate water guide french drain hole to greatest extent and blocked by particulate matter outside gravel.Water guide french drain 2 lower berth impervious barrier 3, prevent leachate contamination subsoil water or under be seeped in the landfill unit of next layer.
The caliber of described gas collection vertical shaft 7 is not less than 600mm, and installing the gradient is 80% ~ 95%, and pipeline uses slidingtype to connect so that it is can bear and ambient temperature can not rise the immense pressure that high factor produces in the sedimentation of degree, side load and landfill yard.The gabion 6 using graded broken stone composition outside well protects, and gabion 6 is cladded with the preferable geotextiles of breathability.Inter-well distance is 10 ~ 50 meters, and the gas collection vertical shaft spacing in the middle part of junk-heap body is 20 ~ 50 meters, and the gas collection vertical shaft spacing arranged along heap body edge is 10 ~ 25 meters.Its top discharge mouth is higher than 0.5 ~ 2.5 meter of junk-heap body surface, and top arranges gas transmission connecting pipe 9 and detection sample tap 10.With junk-heap body cover layer infall, take closing measure, reduce the infiltration of rainwater.Gas collection vertical shaft 7 is connected by the gabion 8 water guide french drain 2 with every layer.
Described level set gas branch pipe 8 caliber is 100mm ~ 500mm, installing the gradient is 5% ~ 20%, before a landfill unit completes to cover, filled out rubbish excavates the pipe trench of level set gas branch pipe 8, after filling out a half height with graded broken stone, puts into the open gas-collecting branch pipe of perforation, backfill graded broken stone again and fill up with rubbish, so while increasing breathability, unload top junk-heap body and the fractional load of other reason generation, extended the service life of level set gas branch pipe 8.Level set gas branch pipe 8 uses with gas collection vertical shaft 7 and flexibly connects, the impact caused during to compensate junk-heap body differential settlement.Every 1 ~ 2 landfill unit lays one layer of level set gas branch pipe.The percolate that level set gas branch pipe and its outer graded broken stone layer are collected collects bottom water guide french drain by gas collection vertical shaft.
Although as it has been described above, represented and described the present invention with reference to specific preferred embodiment, but it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention premise defined without departing from claims, can various changes can be made in the form and details to it.
Claims (8)
1. a landfill yard construction and close tree-shaped percolate and landfill gas guide system and method, including gabion, gas collection vertical shaft, level set gas branch pipe, water guide french drain and leachate collecting device, it is characterized in that: gas collection vertical shaft is installed according to the gradient of refuse landfill landfill unit so that it is with the axis parallel of junk-heap body landfill unit；Level set gas branch pipe regards the thickness of landfill unit and lays, and every 1 ~ 2 landfill unit lays one layer of gas-collecting branch pipe, and gas-collecting branch pipe connects with gas collection vertical shaft；Water guide french drain is layered setting in heap body, and adjacent two layers water guide french drain is connected by vertically-mounted gabion；Gas collection vertical shaft is connected with every layer of water guide french drain by gabion.
Gas collection vertical shaft the most according to claim 1, water guide french drain, it is characterised in that: arranging gabion outside gas collection vertical shaft and water guide french drain, use graded gravel or rubble in gabion, particle diameter is 10mm ~ 100mm.
3. outside gabion, lay one layer of preferable geotextiles of water penetration.
Water guide french drain the most according to claim 1, it is characterised in that: lower berth impervious barrier, prevent leachate contamination subsoil water or under be seeped in the landfill unit of next layer.
Gas collection vertical shaft the most according to claim 1, it is characterized in that: gas collection vertical shaft caliber is not less than 600mm, installing the gradient is 80% ~ 95%, pipeline uses slidingtype to connect, gas collection vertical shaft inter-well distance is 10 ~ 50 meters, gas collection vertical shaft spacing in the middle part of junk-heap body is 20 ~ 50 meters, and the gas collection vertical shaft spacing arranged along heap body edge is 10 ~ 25 meters.
6. gas collection shaft top is provided with landfill gas outlet, arranges gas transmission connecting pipe and detection sample tap, gets up to process or utilize by landfill-gas collecting.
7. with junk-heap body cover layer infall, take closing measure, reduce the infiltration of rainwater.
Level set gas branch pipe the most according to claim 1, it is characterized in that: level set gas branch pipe caliber is 100mm ~ 500mm, installing the gradient is 5% ~ 20%, it is cladded with graded broken stone, every 1 ~ 2 landfill unit lays one layer of level set gas branch pipe, level set gas branch pipe uses with gas collection vertical shaft and flexibly connects, and the percolate that level set gas branch pipe and its outer graded broken stone layer are collected collects bottom water guide french drain by gas collection vertical shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610337916.5A CN105821909A (en) | 2016-05-22 | 2016-05-22 | Tree-like refuse leachate generated in landfill construction and closure as well as landfill gas guide and exhaust system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610337916.5A CN105821909A (en) | 2016-05-22 | 2016-05-22 | Tree-like refuse leachate generated in landfill construction and closure as well as landfill gas guide and exhaust system and method |
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| CN105821909A true CN105821909A (en) | 2016-08-03 |
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| CN201610337916.5A Pending CN105821909A (en) | 2016-05-22 | 2016-05-22 | Tree-like refuse leachate generated in landfill construction and closure as well as landfill gas guide and exhaust system and method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703085A (en) * | 2016-12-22 | 2017-05-24 | 上海岩土工程勘察设计研究院有限公司 | Water collection system for polluted soil isolation and working method thereof |
| CN107059939A (en) * | 2016-12-22 | 2017-08-18 | 上海岩土工程勘察设计研究院有限公司 | Monitoring well and film attachment structure in a kind of isolation for Polluted Soil |
| CN108385734A (en) * | 2018-03-26 | 2018-08-10 | 贵州甲克虫环境科技有限责任公司 | A kind of processing method of valley type landfill percolate |
| CN108981662A (en) * | 2018-08-22 | 2018-12-11 | 湖南军信环保股份有限公司 | A kind of monitoring system for refuse landfill |
| CN110080372A (en) * | 2019-05-29 | 2019-08-02 | 北京高能时代环境技术股份有限公司 | Concentrated liquid recharge well for refuse landfill sealing engineering |
| US10661319B2 (en) | 2017-12-28 | 2020-05-26 | Republic Services, Inc. | Gas ventilation and leachate drain assemblage for landfill |
| CN111940450A (en) * | 2020-08-26 | 2020-11-17 | 胡伟儒 | Landfill leachate and landfill gas collecting system and method |
| CN112170440A (en) * | 2020-09-09 | 2021-01-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Rigid landfill leachate gravity flow drainage and air guide structure |
| CN112588765A (en) * | 2020-11-05 | 2021-04-02 | 中冶南方都市环保工程技术股份有限公司 | Guide exhaust system |
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| EP0742321B1 (en) * | 1995-05-08 | 2003-12-03 | Amcol International Corporation | Low permeability geosynthetic clay liner and method of manufacture thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703085A (en) * | 2016-12-22 | 2017-05-24 | 上海岩土工程勘察设计研究院有限公司 | Water collection system for polluted soil isolation and working method thereof |
| CN107059939A (en) * | 2016-12-22 | 2017-08-18 | 上海岩土工程勘察设计研究院有限公司 | Monitoring well and film attachment structure in a kind of isolation for Polluted Soil |
| CN107059939B (en) * | 2016-12-22 | 2018-10-26 | 上海勘察设计研究院(集团)有限公司 | It is a kind of to be used for the monitoring well in Polluted Soil isolation and film connection structure |
| CN106703085B (en) * | 2016-12-22 | 2019-02-05 | 上海岩土工程勘察设计研究院有限公司 | A kind of aqueous vapor collection system and its working method in Polluted Soil isolation |
| US10661319B2 (en) | 2017-12-28 | 2020-05-26 | Republic Services, Inc. | Gas ventilation and leachate drain assemblage for landfill |
| CN108385734A (en) * | 2018-03-26 | 2018-08-10 | 贵州甲克虫环境科技有限责任公司 | A kind of processing method of valley type landfill percolate |
| CN108981662A (en) * | 2018-08-22 | 2018-12-11 | 湖南军信环保股份有限公司 | A kind of monitoring system for refuse landfill |
| CN110080372A (en) * | 2019-05-29 | 2019-08-02 | 北京高能时代环境技术股份有限公司 | Concentrated liquid recharge well for refuse landfill sealing engineering |
| CN111940450A (en) * | 2020-08-26 | 2020-11-17 | 胡伟儒 | Landfill leachate and landfill gas collecting system and method |
| CN112170440A (en) * | 2020-09-09 | 2021-01-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Rigid landfill leachate gravity flow drainage and air guide structure |
| CN112588765A (en) * | 2020-11-05 | 2021-04-02 | 中冶南方都市环保工程技术股份有限公司 | Guide exhaust system |
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Application publication date: 20160803 |
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