CN209128989U - A kind of pumping dewatering device for landfill yard - Google Patents

Abstract

The utility model is a kind of pumping dewatering device for landfill yard, including deep-well, the center of the deep-well is equipped with center well casing, the lateral wall of the center well casing, the inner sidewall of bottom wall and deep-well, there are backfill gaps between bottom wall, the center well casing includes the real pipeline section of top and the perforation floral tube section of lower section, wherein real pipeline section upper end is pierced by deep-well and extends to ground or more, backfill gap on the outside of the reality pipeline section is from top to bottom followed successively by swelling earthen backfill section, clay backfilling section and the first graded broken stone backfill section, on the outside of the perforation floral tube section and backfill gap of lower section is that the second graded broken stone backfills section, the perforation floral tube section lateral wall is enclosed with geotextiles, the bottom end hot-melt adhesive paste of the center well casing has fixed bottom end cap, bottom is equipped with air driven pump in the center well casing, the upper end well head of the center well casing is packaged with method tritonope Plate.The utility model avoids in landfill heap using electrical equipment, prevents from exploding, ensure that the quality of landfill gas.

Description

A kind of pumping dewatering device for landfill yard

Technical field

The utility model relates to garbage loading embeading technical field more particularly to a kind of pumping dewatering devices for landfill yard.

Background technique

Landfill yard needs air guide gabion is gradually continuous upwards with the increase of landfill height in landfill operation at present It builds, but for various reasons, causes most of air guide gabion can not achieve straight-through up and down, for landfill height more than 10 meters Landfill yard, the vertical guide that both will cause landfill gas are deteriorated, and also can bring difficulty to vertical guide percolate, this problem exists It is especially prominent in old landfill yard, it is common practice to which that well-digging carries out guide again on old landfill yard.Current percolate There are mainly two types of guide wells: (1) being extracted using explosion-proof electric submersible pump suitable to percolate；(2) forced air and percolate are used Mixed mode is extracted, finally guide percolate in gaseous form.There is problem in both modes, fill and deposit in heap In landfill gas, the main component of landfill gas is inflammable and explosive methane gas, and first way is filling in heap using electrically setting It is standby, even explosion-proof electrical equipment, there is also the risk of explosion, excessive air can be made directly to discharge in well second, The oxygen content of landfill gas in well is caused to increase, so that the local concentration of methane reduces, if into explosion limit, same meeting It explodes, simultaneously because oxygen content increases, also can bring additional pretreatment difficulty to the utilization in landfill gas later period.

Summary of the invention

The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of pumping dewatering device for landfill yard, It avoids also avoiding increasing the oxygen content in landfill gas using electrical equipment in landfill heap.

In order to achieve the above object, the utility model adopts the following technical solutions:

A kind of pumping dewatering device for landfill yard, including deep-well, the center of the deep-well is equipped with center well casing, described The lateral wall of center well casing, the inner sidewall of bottom wall and deep-well, between bottom wall there are backfill gap, the center well casing includes upper The real pipeline section of side and the perforation floral tube section of lower section, wherein real pipeline section upper end is pierced by deep-well and extends to ground or more, the real pipe The backfill gap in section outside is from top to bottom followed successively by swelling earthen backfill section, clay backfilling section and the first graded broken stone backfill section, institute It states on the outside of perforation floral tube section and the backfill gap of lower section is that the second graded broken stone backfills section, the perforation floral tube section lateral wall package There are geotextiles, the bottom end hot-melt adhesive paste of the center well casing has fixed bottom end cap, and bottom is equipped with air driven pump in the center well casing, The upper end well head of the center well casing is packaged with blank flange, and the blank flange is equipped with Powered Air pipe, landfill-gas collecting Pipe, Powered Air exhaust pipe, landfill gas probe tube, one end of the Powered Air pipe and the air compressor for being set to ground or more It is connected, the other end of Powered Air pipe is connected with the air inlet of air driven pump, one end of the Powered Air exhaust pipe and gas The gas outlet of dynamic pump is connected, and the other end of Powered Air exhaust pipe is connected with atmosphere, one end of the landfill-gas collecting pipe It is connected with the air-introduced machine for being set to ground or more, the other end of landfill-gas collecting pipe is passed through in the well casing of center, and the landfill gas takes One end of sample pipe is passed through in the well casing of center, is equipped with percolate delivery pipe in the center well casing, and the one of the percolate delivery pipe End is connected with the liquid outlet of air driven pump, and the other end of percolate delivery pipe is worn from the side wall of center well casing part above ground level Out.

The Powered Air pipe, landfill-gas collecting pipe, Powered Air exhaust pipe, landfill gas probe tube and percolate delivery pipe On be equipped with valve.

Landfill gas pressure gauge is additionally provided on the landfill-gas collecting pipe.

The upper end of the Powered Air exhaust pipe is elbow shape, and nozzle is downward.

The pipe porosity of the perforation floral tube section is 5% or more.

The height of the first graded broken stone backfill section is at least 500mm.

The center well casing is the HDPE pipe that outer diameter is 400mm.

The beneficial effects of the utility model are: air driven pump is arranged in the well casing of center in the utility model, by extraneous air The power as air driven pump is compressed, to be exported the percolate in heap is filled, avoids and uses electrical equipment in landfill heap, It prevents from exploding, and the not importing of air, ensure that the quality of landfill gas.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the partial enlarged view in Fig. 1 at A；

In figure: the well casing of the center 1-；2- swelling earthen backfill section；3- clay backfilling section；The first graded broken stone of 4- backfills section；5- Graduation two rubble backfills section；6- reality pipeline section；7- perforation floral tube section；8- geotextiles；9- fixes bottom end cap；10- blank flange；11- Air driven pump；12- air compressor；13- air-introduced machine；14- Powered Air pipe；15- landfill-gas collecting pipe；16- landfill gas pressure gauge； 17- Powered Air exhaust pipe；18- percolate delivery pipe；19- landfill gas probe tube；20- deep-well；

It is described in detail below with reference to the embodiments of the present invention referring to attached drawing.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples:

As shown in Figure 1 to Figure 2, a kind of pumping dewatering device for landfill yard, including deep-well 20, in the deep-well 20 The heart is equipped with center well casing 1, and the lateral wall of the center well casing 1, the inner sidewall of bottom wall and deep-well 20, there are backfills between bottom wall Gap, the center well casing 1 includes the real pipeline section 6 of top and the perforation floral tube section 7 of lower section, wherein 6 upper end of real pipeline section is pierced by depth Well 20 simultaneously extends to ground or more, and the backfill gap in 6 outside of reality pipeline section is from top to bottom followed successively by swelling earthen backfill section 2, glues Earthen backfill section 3 and the first graded broken stone backfill section 4, and the backfill gap in 7 outside of perforation floral tube section and lower section is matched for the second level Rubble backfills section 5, and 7 lateral wall of perforation floral tube section is enclosed with geotextiles 8, and the bottom end hot-melt adhesive paste of the center well casing 1 has Bottom end cap 9 is fixed, bottom is equipped with air driven pump 11 in the center well casing 1, and the upper end well head of the center well casing 1 is packaged with flange Blind plate 10, the blank flange 10 are equipped with Powered Air pipe 14, landfill-gas collecting pipe 15, Powered Air exhaust pipe 17, landfill Gas probe tube 19, one end of the Powered Air pipe 14 are connected with the air compressor 12 for being set to ground or more, Powered Air The other end of pipe 14 is connected with the air inlet of air driven pump 11, one end of the Powered Air exhaust pipe 17 and going out for air driven pump 11 Port is connected, and the other end of Powered Air exhaust pipe 17 is connected with atmosphere, one end of the landfill-gas collecting pipe 15 with set Air-introduced machine 13 more than ground is connected, and the other end of landfill-gas collecting pipe 15 is passed through in center well casing 1, and the landfill gas takes One end of sample pipe 19 is passed through in center well casing 1, and percolate delivery pipe 18, the percolate discharge are equipped in the center well casing 1 One end of pipe 18 is connected with the liquid outlet of air driven pump 11, and the other end of percolate delivery pipe 18 is above ground level from center well casing 1 Partial side wall is pierced by.

The Powered Air pipe 14, landfill-gas collecting pipe 15, Powered Air exhaust pipe 17, landfill gas probe tube 19 and diafiltration Valve is equipped on liquid delivery pipe 18.

Landfill gas pressure gauge 16 is additionally provided on the landfill-gas collecting pipe 15.

The upper end of the Powered Air exhaust pipe 17 is elbow shape, and nozzle is downward.

The pipe porosity of the perforation floral tube section 7 is 5% or more.

The height of the first graded broken stone backfill section 4 is at least 500mm.

The center well casing 1 is the HDPE pipe that outer diameter is 400mm.

The diameter of the utility model middle-deep well 20 is 800mm, and depth is 5 meters, 1 bottom of center well casing and 20 bottom of deep-well away from From between 300mm-500mm, well casing 1 top in center is higher by bottom surface 500mm, swelling earthen backfill section 2 using bentonite and The mixture of clay, wherein bentonitic mixed ratio is not less than 80%, the height of swelling earthen backfill section 2 is 500mm, and clay returns The height for filling out section 3 is 500mm-1000mm, and the second graded broken stone backfill section 5 outside floral tube section 7 of perforating is loaded filter.

The utility model need to only open air compressor 12 and Powered Air pipe 14, percolate discharge when needing to drain Draining can be realized in valve on pipe 18 and Powered Air exhaust pipe 17；When needing to be evacuated, air-introduced machine 13 and landfill need to be only opened The abstraction of landfill gas can be realized in valve on gas collecting pipe 15, can monitor guide by landfill gas pressure gauge 16 in the process State.

Air driven pump 11 is arranged in the utility model in center well casing 1, by extraneous air compression as the dynamic of air driven pump 11 Power avoids in landfill heap using electrical equipment to export the percolate in heap is filled, prevents from exploding, and do not have The importing of air ensure that the quality of landfill gas.

The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without Improvement directly applies to other occasions, both is within the protection scope of the present invention.

Claims (7)

1. a kind of pumping dewatering device for landfill yard, which is characterized in that including deep-well (20), the center of the deep-well (20) Equipped with center well casing (1), the lateral wall of the center well casing (1), the inner sidewall of bottom wall and deep-well (20), between bottom wall there are Gap is backfilled, the center well casing (1) includes the real pipeline section (6) of top and the perforation floral tube section (7) of lower section, wherein real pipeline section (6) upper end is pierced by deep-well (20) and extends to ground or more, and the backfill gap on the outside of the reality pipeline section (6) is from top to bottom followed successively by Swelling earthen backfill section (2), clay backfilling section (3) and the first graded broken stone backfill section (4), on the outside of the perforation floral tube section (7) with The backfill gap of lower section is that the second graded broken stone backfills section (5), and perforation floral tube section (7) lateral wall is enclosed with geotextiles (8), The bottom end hot-melt adhesive paste of the center well casing (1) has fixed bottom end cap (9), and the interior bottom of the center well casing (1) is equipped with air driven pump (11), the upper end well head of the center well casing (1) is packaged with blank flange (10), and it is empty that the blank flange (10) is equipped with power Tracheae (14), landfill-gas collecting pipe (15), Powered Air exhaust pipe (17), landfill gas probe tube (19), the Powered Air pipe (14) one end is connected with the air compressor (12) for being set to ground or more, the other end and air driven pump of Powered Air pipe (14) (11) air inlet is connected, and one end of the Powered Air exhaust pipe (17) is connected with the gas outlet of air driven pump (11), moves The other end of power air exhaust duct (17) is connected with atmosphere, one end of the landfill-gas collecting pipe (15) be set to ground more than Air-introduced machine (13) be connected, the other end of landfill-gas collecting pipe (15) is passed through in center well casing (1), the landfill gas probe tube (19) one end is passed through in center well casing (1), is equipped with percolate delivery pipe (18) in the center well casing (1), the percolate One end of delivery pipe (18) is connected with the liquid outlet of air driven pump (11), and the other end of percolate delivery pipe (18) is from center well casing (1) side wall of part above ground level is pierced by.

2. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the Powered Air Manage (14), landfill-gas collecting pipe (15), Powered Air exhaust pipe (17), landfill gas probe tube (19) and percolate delivery pipe (18) On be equipped with valve.

3. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the landfill gas is received Landfill gas pressure gauge (16) are additionally provided on collector (15).

4. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the Powered Air The upper end of exhaust pipe (17) is elbow shape, and nozzle is downward.

5. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the perforation floral tube The pipe porosity of section (7) is 5% or more.

6. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the first order is matched The height of rubble backfill section (4) is at least 500mm.

7. a kind of pumping dewatering device for landfill yard according to claim 1, which is characterized in that the center well casing (1) it is managed for the HDPE that outer diameter is 400mm.