CN101846613A - Clogging simulation test device for drainage layer of refuse landfill under different-temperature conditions - Google Patents
Clogging simulation test device for drainage layer of refuse landfill under different-temperature conditions Download PDFInfo
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- CN101846613A CN101846613A CN 201010182449 CN201010182449A CN101846613A CN 101846613 A CN101846613 A CN 101846613A CN 201010182449 CN201010182449 CN 201010182449 CN 201010182449 A CN201010182449 A CN 201010182449A CN 101846613 A CN101846613 A CN 101846613A
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Abstract
The invention discloses a clogging simulation test device for a drainage layer of a refuse landfill under different-temperature conditions. A cylinder filled with sand gravels is placed in a water tank, and the outer part of the water tank is provided with an automatic temperature electric-control tank respectively connected with a temperature sensor and an electric heating pipe; the lower part of the cylinder is provided with a permeable plate forming an airtight cavity with a bottom plate, the permeable plate is connected with a percolate inlet arranged on the side wall of the cavity, the top of the cylinder is covered with a sealing cover plate and is provided with air vents, the upper part of the cylinder is provided with a percolate outlet, the side wall of the cylinder is uniformly provided with more than 3 holes, each hole is provided with a joint, one ends of the joints are connected with porous pipes inserted to the sand gravels, the other ends are connected with one ends of three-way valves installed on the side wall of the water tank, the second ends and the third ends of the three-way valves are respectively connected with drainage pipes and pressure measuring pipes, and each pressure measuring pipe and the air vents are both connected with an air collecting bag. The invention can determine the porosity and the osmotic coefficient of drainage holes of the drainage sand gravels and measure the biochemical parameters of percolates in the drainage sand gravels.
Description
Technical field
The present invention relates to a kind of condition of different temperatures drainage layer of refuse landfill under silting simulation test device.
Background technology
(the Leachate Collection and Drainage Systems of percolate guide system, abbreviation LCDS) effect is to discharge timely and effectively by rainwater to go into to blend the percolate that garbage degradation produces, head on the control laying (is generally got 30cm, GB16899-2008 in design load; US EPA, 1985), thereby reduce the percolate seepage and guarantee the landfill yard safe operation.Because the influence of physics, chemistry, biodyne in the landfill yard operational process, silting in various degree can take place in drainage blanket in the percolate guide system, cause volume of voids to reduce even stop up, cause the lead layer infiltration coefficient to change, thereby can't realize the guide function of expecting.The drainage blanket silting will directly cause percolate water level rising in the landfill yard, make the head on the bottom liner layer be far longer than design load.
Be research landfill yard drainage blanket silting mechanism and influence factor thereof, Chinese scholars has been carried out a lot of shop experiments, more commonly the rubbish column test.At present, the rubbish column test can be studied the influence to silting of adrainage material particle diameter and grating, percolate flow velocity, concentration and temperature.But it is, in also being confined to for the research of temperature effect, the situation of low temperature, far away not enough for drainage blanket silting research under the high-temperature condition owing to reasons such as test unit restrictions.And in fact, especially domestic, the temperature of landfill yard bottom is often very high.
Summary of the invention
The object of the present invention is to provide a kind of can be at condition of different temperatures drainage layer of refuse landfill under silting simulation test device.
The technical solution used in the present invention:
The cylinder of sandy gravel is housed in the present invention incites somebody to action, is positioned in the water tank of filled with water, temperature electrical autocontrol case is equipped with in the water tank outside, and temperature electrical autocontrol case is connected with the temperature sensor that inserts water tank upper and the electrothermal tube of water tank bottom respectively; Described cylinder bottom is provided with porous disc, form a closed cavity with base plate, the percolate of test usefulness is connected with percolate import that cavity sidewalls is opened after peristaltic pump pressurization, the cylinder top is stamped seal cover board and is provided with air hole, cylinder top has the percolate outlet, the cylinder side wall that sandy gravel part is housed evenly has the hole more than 3, joint is equipped with in each hole respectively, one end of each joint is connected with the antipriming pipe that inserts sandy gravel respectively, the other end of each joint is connected with an end of the T-valve that is installed in the water tank sidewall, the second termination drainpipe of T-valve, the 3rd end of T-valve links to each other with the piezometric tube of water tank outside, and each piezometric tube all is connected with the gas collecting bag with air hole.
Ebullator is equipped with in described water tank outside, and pump inlet is arranged on the water tank bottom, and outlet is arranged on top.The described cylinder side wall that the sandy gravel part is housed evenly has 3-10 hole.
The beneficial effect that the present invention has is:
The present invention controls temperature effectively, and the silting mechanism and the evolution of simulation landfill yard sandy gravel drainage blanket are analyzed various different temperatures, particle diameter, percolate flow velocity, concentration conditions, had or not the influence of geotextile to silting.The present invention can measure draining sandy gravel drain aperture degree, infiltration coefficient and wherein the biochemical parameters of percolate measure (Ca for example
2+, COD, BOD, organic volatile acid concentration).Simultaneously, the many down group tests of same temperature conditions can be carried out simultaneously, effectively economize on resources, and raise the efficiency.
Description of drawings
Accompanying drawing is a structural principle synoptic diagram of the present invention.
Among the figure: the import of 1-1 percolate, 1-2 porous disc, 1-3 cylinder, the outlet of 1-4 percolate, 2-1 water tank, the 2-2 ebullator, 2-3 electrothermal tube, 2-4 temperature sensor, 2-5 temperature electrical autocontrol case, 3-1 antipriming pipe, the 3-2 T-valve, 3-3 piezometric tube, 3-4 air hole, 3-5 gas collecting bag
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in drawings, the cylinder 1-3 of sandy gravel in inciting somebody to action, is housed in the present invention, be positioned among the water tank 2-1 of filled with water, water tank 2-1 is equipped with the outside ebullator 2-2 and temperature electrical autocontrol case 2-5, temperature electrical autocontrol case 2-5 is connected with the temperature sensor 2-4 that inserts water tank 2-1 top and the electrothermal tube 2-3 of water tank 2-1 bottom respectively, ebullator 2-2 import is arranged on water tank 2-1 bottom, outlet is arranged on top, ebullator 2-2 quickens flow up and down, and the temperature data of temperature automatic control box 2-5 reception temperature sensor 2-4 and automatic control add electrothermal tube 2-3 and realizes constant temperature; Described cylinder 1-3 bottom is provided with porous disc 1-2, form a closed cavity with base plate, the percolate of test usefulness is connected with percolate import 1-1 that cavity sidewalls is opened after peristaltic pump pressurization, cylinder 1-3 is stamped seal cover board in the top and is provided with air hole 3-4, cylinder 1-3 top has percolate outlet 1-4, the cylinder 1-3 sidewall that sandy gravel part is housed evenly has the hole more than 3, joint is equipped with in each hole respectively, one end of each joint is connected with the antipriming pipe 3-1 that inserts sandy gravel respectively, the other end of each joint is connected with an end of the T-valve that is installed in the water tank sidewall, the second termination drainpipe of T-valve, the 3rd end of T-valve links to each other with the piezometric tube 3-3 of water tank 2-1 outside, and each piezometric tube 3-3 all is connected with gas collecting bag 3-5 with air hole 1-4.In process of the test, can obtain the silting situation parameter of drainage blanket by measurement mechanism, the passage that is connected with drainpipe by T-valve 3-2 can be discharged the percolate of privileged site, measure CO D, BOD, PH, Ca
2+, organic volatile acid concentration, measure the drain aperture degree; Can measure the infiltration coefficient of draining sandy gravel by piezometric tube 3-3.Temperature automatic control box 2-5 can choose on market according to the experiment needs.
The described cylinder 1-3 sidewall that the sandy gravel part is housed evenly has 3-10 hole, and cylinder 1-3 sidewall evenly has 7 holes in the present embodiment.
As shown in drawings, the simplified device of draining sandy gravel: comprise the percolate import 1-1 of cylindrical shell 1-3 bottom, porous disc 1-2, the percolate outlet 1-4 on cylinder 1-3 top.Porous disc 1-2 is the sheet steel that is drilled with aperture, both can support the sandy gravel on top, can form the reservoir of percolate again with base plate, places geotextile on it and can also study under the one-dimensional condition geotextile to the influence of silting.The percolate import is positioned at below the cylindrical shell, can guarantee that percolate covers sandy gravel from bottom to top, guarantees saturated.
As shown in drawings, described hot water bath temperature control device: comprise among the water tank 2-1 and pile water, ebullator 2-2 quickens flow up and down, for cylinder 1-3 provides an even temperature environment, 2-4 water temperature sensor can record water temperature in real time, and pass to temperature electrical autocontrol case 2-5, when water temperature was lower than design temperature, temperature electrical autocontrol case 2-5 control heating tube 2-3 circuit automatically realized heating.
As shown in drawings, described measurement mechanism: comprise that the cylinder 1-3 sidewall that the sandy gravel part is housed evenly has the hole more than 3, joint is equipped with in each hole respectively, one end of each joint is connected with the antipriming pipe 3-1 that inserts sandy gravel respectively, antipriming pipe 3-1 length is the radius length of cylinder 1-3, form for spiling above the tubule, can prevent that sandy gravel from connecting the obstruction of the conduit of measurement mechanism 3 to cylinder 1-3 side, simultaneously can also prevent that moisture can not effectively be discharged in the sandy gravel, the other end of each joint is connected with an end of the T-valve that is installed in the water tank sidewall, the second termination drainpipe of T-valve, the 3rd end of T-valve links to each other with the piezometric tube 3-3 of water tank 2-1 outside, each piezometric tube 3-3 all is connected with gas collecting bag 3-5 with air hole 1-4, piezometric tube 3-3 and collecting bag are communicated with, and can guarantee anaerobic condition and pressure equilibrium.
In the process of the test, control T-valve switch links the port of T-valve and piezometric tube 3-3.The percolate of test usefulness enters percolate import 1-1 by peristaltic pump, constantly gathers until not having porous disc 1-2, enters in the sandy gravel of cylinder, is discharged by percolate outlet 1-3 at last.Obtain the infiltration coefficient of privileged site sandy gravel by the flow velocity of the loss of flood peak in the percolate flow process (being the head difference of piezometric tube 3-3) and percolate, thereby obtain the silting situation of different parts sandy gravel.When the measurement drain aperture is spent, turn off the peristaltic pump that is moving earlier, then open uppermost T-valve to the drainpipe passage, measure the volume that flows out percolate.After treating that liquid no longer flows out, open following T-valve again, go down successively and obtain the water discharge of different parts sandy gravel.Water discharge can obtain the drain aperture degree of this part sandy gravel divided by the cumulative volume of sandy gravel.By this drainage channel, can obtain the percolate in the different parts sandy gravel, measure CO D, BOD, PH, Ca
2+, organic volatile acid concentration etc., and then the mechanism of research sandy gravel silting.
Can set a temperature in the water tank, can place a plurality of cylinders and a plurality of measurement mechanism, carry out many groups comparison test under the uniform temp condition.Several different water tanks can be set different temperatures, can carry out the many groups comparison test under the condition of different temperatures.
The present invention is by sandy gravel cylindrical shell device, the bath temperature control device, the condition drainage layer of refuse landfill under silting of measurement mechanism simulation design temperature can provide an even temperature field by water-bath, piezometric tube can be measured infiltration coefficient, and drainpipe can obtain the percolate of different parts.The present invention can measure infiltration coefficient, the drain aperture degree of sandy gravel under the condition of different temperatures, by the collection to gas and percolate, can measure gas composition and content, percolate COD, BOD, PH, Ca
2+, organic volatile acid concentration etc., for research drainage layer of refuse landfill silting mechanism provides basic parameter.
Claims (3)
1. condition of different temperatures drainage layer of refuse landfill under silting simulation test device, it is characterized in that: the cylinder (1-3) that sandy gravel is housed in inciting somebody to action, be positioned in the water tank (2-1) of filled with water, temperature electrical autocontrol case (2-5) is equipped with in water tank (2-1) outside, and temperature electrical autocontrol case (2-5) is connected with the temperature sensor (2-4) that inserts water tank (2-1) top and the electrothermal tube (2-3) of water tank (2-1) bottom respectively; Described cylinder (1-3) bottom is provided with porous disc (1-2), form a closed cavity with base plate, the percolate of test usefulness is connected with percolate import (1-1) that cavity sidewalls is opened after peristaltic pump pressurization, cylinder (1-3) top is stamped seal cover board and is provided with air hole (3-4), cylinder (1-3) top has percolate outlet (1-4), cylinder (1-3) sidewall that sandy gravel part is housed evenly has the hole more than 3, joint is equipped with in each hole respectively, one end of each joint is connected with the antipriming pipe (3-1) that inserts sandy gravel respectively, the other end of each joint is connected with an end of the T-valve that is installed in the water tank sidewall (3-2), the second termination drainpipe of T-valve (3-2), the 3rd end of T-valve (3-2) links to each other with the piezometric tube (3-3) of water tank (2-1) outside, and each piezometric tube (3-3) all is connected with gas collecting bag (3-5) with air hole (1-4).
2. a kind of condition of different temperatures drainage layer of refuse landfill under silting simulation test device according to claim 1, it is characterized in that: ebullator (2-2) is equipped with in described water tank (2-1) outside, ebullator (2-2) import is arranged on water tank (2-1) bottom, and outlet is arranged on top.
3. a kind of condition of different temperatures drainage layer of refuse landfill under silting simulation test device according to claim 1 is characterized in that: described cylinder (1-3) sidewall that the sandy gravel part is housed evenly has 3-10 hole.
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| CN2010101824496A CN101846613B (en) | 2010-05-25 | 2010-05-25 | Clogging simulation test device for drainage layer of refuse landfill under different-temperature conditions |
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| CN2010101824496A CN101846613B (en) | 2010-05-25 | 2010-05-25 | Clogging simulation test device for drainage layer of refuse landfill under different-temperature conditions |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175212A (en) * | 2011-01-29 | 2011-09-07 | 浙江大学 | Device and method for detecting hydraulic head of landfill site percolate guide discharging layer |
| CN102175585A (en) * | 2011-01-27 | 2011-09-07 | 河海大学 | Method for testing permeability stability of sand gravel material |
| CN102435541A (en) * | 2011-11-11 | 2012-05-02 | 东南大学 | Time domain reflection technology-based moisture transport measuring device |
| CN104122185A (en) * | 2014-07-22 | 2014-10-29 | 浙江理工大学 | Tester for researching compression-permeation relationship of garbage soil |
| CN106841033A (en) * | 2017-01-18 | 2017-06-13 | 浙江科技学院（浙江中德科技促进中心） | The pH value and porosity real-time test device and method of nanogel solidification sand |
| CN109374508A (en) * | 2018-12-06 | 2019-02-22 | 中国科学院武汉岩土力学研究所 | A kind of tailing row's infiltration system silting imitative experimental appliance and experimental method |
| CN111257191A (en) * | 2020-01-23 | 2020-06-09 | 中铁第四勘察设计院集团有限公司 | Chemical clogging measurement method for geotextile |
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| CN2898826Y (en) * | 2006-05-19 | 2007-05-09 | 中国矿业大学 | Geologic-bury analog experimental apparatus for urban refuse |
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| CN201673106U (en) * | 2010-05-25 | 2010-12-15 | 浙江大学 | Clogging simulation test device for refuse landfill drainage layer at different temperatures |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175585A (en) * | 2011-01-27 | 2011-09-07 | 河海大学 | Method for testing permeability stability of sand gravel material |
| CN102175585B (en) * | 2011-01-27 | 2012-11-28 | 河海大学 | Method for testing permeability stability of sand gravel material |
| CN102175212A (en) * | 2011-01-29 | 2011-09-07 | 浙江大学 | Device and method for detecting hydraulic head of landfill site percolate guide discharging layer |
| CN102435541A (en) * | 2011-11-11 | 2012-05-02 | 东南大学 | Time domain reflection technology-based moisture transport measuring device |
| CN104122185A (en) * | 2014-07-22 | 2014-10-29 | 浙江理工大学 | Tester for researching compression-permeation relationship of garbage soil |
| CN104122185B (en) * | 2014-07-22 | 2016-10-05 | 浙江理工大学 | The compression of a kind of refuse soil and infiltration relation analyzer |
| CN106841033A (en) * | 2017-01-18 | 2017-06-13 | 浙江科技学院（浙江中德科技促进中心） | The pH value and porosity real-time test device and method of nanogel solidification sand |
| CN109374508A (en) * | 2018-12-06 | 2019-02-22 | 中国科学院武汉岩土力学研究所 | A kind of tailing row's infiltration system silting imitative experimental appliance and experimental method |
| CN109374508B (en) * | 2018-12-06 | 2023-10-10 | 中国科学院武汉岩土力学研究所 | Clogging simulation experiment device and method for tailing drainage system |
| CN111257191A (en) * | 2020-01-23 | 2020-06-09 | 中铁第四勘察设计院集团有限公司 | Chemical clogging measurement method for geotextile |
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| CN101846613B (en) | 2011-08-24 |
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