CN205444161U - Foundation ditch groundwater recharge device - Google Patents
Foundation ditch groundwater recharge device Download PDFInfo
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- CN205444161U CN205444161U CN201620179108.6U CN201620179108U CN205444161U CN 205444161 U CN205444161 U CN 205444161U CN 201620179108 U CN201620179108 U CN 201620179108U CN 205444161 U CN205444161 U CN 205444161U
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Abstract
The utility model discloses a foundation ditch groundwater recharge device, including anti - flushing unit and consecutive pumped well, one -level storage water tank, aeration unit, level filtering ware, secondary filter, second grade storage water tank and recharging well, anti - flushing unit links to each other with level filtering ware, secondary filter respectively, the device is still including control processing unit and the water level monitor cell that links to each other with pumped well, second grade storage water tank and recharging well respectively, control processing unit include the control subelement that draws water that links to each other with the pumped well, with recharge water treatment control subelement that the water quality processing device links to each other and with continuous the recharging and the flow control subelement of recharging well. The utility model discloses a foundation ditch groundwater recharge device can ensure that the foundation ditch periphery can not arouse surface subsidence because of precipitation, has still really realized simultaneously optimizing the quality of water of recharging water, can not arouse decline of water table, quality of water spoiling and the pollution of regional groundwater after recharging water and recharging, also can not cause the recharging well to block up, and it is good to recharge the effect.
Description
Technical field
The invention belongs to the base pit engineering technical field in municipal administration, building engineering field rock engineering, relate to base pit dewatering recharging technique field, be specifically related to a kind of foundation ditch groundwater recharge device.
Background technology
The environmental problem relevant with base pit engineering specifically includes that hole week surface subsidence, the decline of all subsoil water in hole, hole Zhou Tuti shifted laterally in hole, the neighbouring sedimentation of buildings or structures, inclination and crack, the sedimentation of all comprehensive pipelines in hole and displacement etc..Excavation of foundation pit and base pit dewatering are the main causes causing hole week environmental problem, around the excavation of foundation pit degree of depth, the horizontal displacement of foundation pit supporting construction and the foundation ditch caused because of base pit dewatering, level of ground water reduces the major influence factors being to cause the deformation of hole week, and the outer level of ground water of distance 2 times of cutting depth scopes of foundation ditch reduces the leading factor being to cause surface subsidence.The hole Zhou Shuiwei that base pit dewatering causes reduces and causes soil Pore Pressure transfer, dissipates, and has not only broken the original mechanical balance of the soil body, and effective stress increases；And in the range of cone of depression, hydraulic gradient increases, act on the penetration on the soil body with body force form and increase.The two coefficient result is, hole Zhou Tuti occurs sedimentation and deformation.Therefore, during foundation pit construction, effectively control hole week WATER LEVEL CHANGES, be the key of the hole week surface subsidence deformation that control causes because of precipitation.
For eliminating or reducing the base pit dewatering impact on surrounding, generally use the method that water-stop curtain is set, but the cost of water-stop curtain is higher, and difficulty of construction is relatively big, easily permeates.In view of the above-mentioned deficiency of water-stop curtain, groundwater recharge method is gradually promoted.
Implementing groundwater recharge is to control because of the direct approach of the hole Zhou Tuti groundwater level change caused by base pit dewatering.But, artificial recharge subsoil water needs to keep a close eye on the water quality of recharge water, in order to avoid making subsoil water be polluted because recharging.The water quality of recharge water must be better than the water quality of former subsoil water, reaches the standard of drinking water；The water quality of local ground watering will not be caused after recharging to degenerate and pollute.Meanwhile, can't be containing special ion or the gas that can make well pipe corrosion in recharge water.Additionally, existing groundwater recharge system is in use for some time, it is also easy to the reason of the fine grained medium because of float, bubble, chemical precipitation, growth of microorganism and water-bearing layer itself, causes blocking of recharge well, impact to recharge effect.
Summary of the invention
It is an object of the invention to the deficiency overcoming above-mentioned prior art to exist, it is provided that a kind of foundation ditch groundwater recharge device.This foundation ditch groundwater recharge device makes foundation ditch periphery groundwater level not continuous decrease during base pit dewatering, it is possible to keep constant water level, it is ensured that foundation ditch periphery will not cause surface subsidence because of precipitation；The more important thing is and be truly realized the water quality optimizing recharge water, recharge water will not cause the water quality of local ground watering degenerate and pollute after recharging, and does not contains special ion or the gas that can make well pipe corrosion in recharge water, does not results in blocking of recharge well, recharges effect good.
It is an object of the invention to realizing by the following technical programs:
The present invention relates to a kind of foundation ditch groundwater recharge device, including the pumped well being sequentially connected, recharge treatment device for water and inverted well, the described treatment device for water that recharges includes backwash unit and the one-level storage tank being sequentially connected, aeration unit, grade one filter, secondary filter, two grades of storage tanks, and described backwash unit is connected with grade one filter, secondary filter respectively；Described foundation ditch groundwater recharge device also includes controlling processing unit and the water level monitoring unit being connected respectively with pumped well, two grades of storage tanks and inverted well, described control processing unit include the control subelement that draws water being connected with pumped well, with recharge water processing control subelement that treatment device for water is connected and recharging and flow-control subelement of being connected with monitoring holes, inverted well.
Preferably, being provided with the first immersible pump in described pumped well, the first immersible pump pipeline water outlet, through tee T, is connected with one-level storage tank, two grades of storage tanks, external discharge-channels respectively；Being provided with electromagnetic valve at tee T on described first immersible pump pipeline, this electromagnetic valve is connected with the control subelement that draws water.
Preferably, described aeration unit includes aeration tank and for the air compressor machine to aeration tank oxygen supply, and the water inlet at aeration tank top is connected by pipeline with the outlet of one-level storage tank, and the outlet bottom aeration tank is connected with the water inlet of grade one filter；The top of aeration tank is additionally provided with backwash discharge outlet, air vent, and bottom is additionally provided with backwash water inlet, and described backwash water inlet is connected with backwash unit.
Preferably, described backwash unit includes on the total pipeline that backwashing pump, described backwashing pump are arranged on the backwash outlet backwash water inlet with secondary filter of two grades of storage tanks, the backwash water inlet of grade one filter is connected；Described water processing control subelement is connected with backwashing pump, controls it and secondary filter, grade one filter are carried out backwash.
Preferably, recharge described in and flow-control subelement uses solar energy automatic start-stop to recharge and flow-control case controls water level in inverted well；Described water level monitoring unit uses the monitoring of solar energy water level detection case to recharge groundwater level, and the water level monitored by periphery automatically controls the amount of recharging of backflow device.
Preferably, drainage base plate, quartz sand thickness and quartz sand filter media layer it are provided with in described grade one filter from bottom to top；The thickness of described quartz sand thickness is 2～8mm, and the thickness of described quartz sand filter media layer is 1.4～1.8m.
Preferably, described quartz sand filter media layer uses grating quartz sand filter media to lay, and the particle diameter of described grating quartz sand filter media is respectively 0.5～1.2mm, 1～2mm.
Preferably, described drainage base plate uses porous plate, and this porous plate is provided with some DN25 water filtering caps of spacing 60mm, quincuncial arrangement.
Preferably, filter screen, SS filtrate filtering layer and PP cotton composite screen it are provided with in described secondary filter from bottom to top；The thickness of described SS filtrate filtering layer is 1.2～1.5m, and this thickness accounts for the 40～50% of secondary filter internal height.
Preferably, in described secondary filter between SS filtrate filtering layer and PP cotton composite screen, more than SS filtrate filtering layer it is equipped with the compound manganese sand filtration bed of material, quartz sand filtering layer successively；The thickness of the described compound manganese sand filtration bed of material is 0.3～0.5m, and the thickness of described quartz sand filtering layer is 0.2～0.4m.
Compared with prior art, there is advantages that
1, foundation ditch periphery groundwater level not continuous decrease during base pit dewatering is made, it is possible to keep constant water level, it is ensured that foundation ditch periphery will not cause surface subsidence because of precipitation；
2, being truly realized the water quality of optimization recharge water, recharge water will not cause the water quality of local ground watering degenerate and pollute after recharging；
3, recharge water is practically free of can make special ion or the gas of well pipe corrosion；
4, the cascade filtration effect that grating single filter effect and particular filter media are arranged all is significantly improved, the fine grained in float, bubble, chemical precipitation, growth of microorganism and water-bearing layer in recharge water has obtained maximum removal, significantly reduce blocking of recharge well phenomenon, greatly improve and recharge effect.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, the other features, objects and advantages of the present invention will become more apparent upon:
Fig. 1 is the know-why route schematic diagram of foundation ditch groundwater recharge device；
Fig. 2 is the process chart of foundation ditch groundwater recharge device；
Fig. 3 is the structural representation of foundation ditch groundwater recharge device；
Fig. 4 is the know-why route schematic diagram of water level monitoring unit；
Fig. 5 is the structural representation of aeration tank；
Fig. 6 is the cross-sectional view of grade one filter；
Fig. 7 is the surface structure schematic diagram of secondary filter；
Fig. 8 is the generalized section of secondary filter；
nullWherein，1、Pumped well，2、One-level storage tank，3、Air compressor machine，4、Aeration tank，5、Grade one filter，6、Secondary filter，7、Two grades of storage tanks，8、Inverted well，9、Backwashing pump，10、First-class gauge，11、Second gauge，12、First immersible pump，13、Second immersible pump，14、Solar energy automatic start-stop pumping box，15、Water processing control case，16、Solar energy automatic start-stop recharges and flow-control case，17、Solar energy water level detection case，21、One-level storage tank water inlet，22、One-level storage tank outlet，23、One-level storage tank gap，24、One-level storage tank sewage draining exit，41、Aeration tank water inlet，42、Aeration tank outlet，43、Aeration tank backwash water inlet，44、Aeration tank backwash discharge outlet，45、Aeration tank air vent，46、Aeration board，51、Grade one filter water inlet，52、Grade one filter outlet，53、Grade one filter backwash water inlet，54、Grade one filter backwash discharge outlet，55、Grade one filter air vent，56、Drainage base plate，57、Quartz sand thickness，58、Flow-stopping plate，61、Secondary filter water inlet，62、Secondary filter outlet，63、Secondary filter backwash water inlet，64、Secondary filter backwash discharge outlet，65、Secondary filter air vent，66、Secondary filter charging aperture，67、Secondary filter discharging opening，611、Filter screen，612、SS filter material layer，613、The compound manganese sand filtration bed of material，614、Quartz sand filtering layer，615、PP cotton composite screen，71、Two grades of storage tank water inlets，72、Two grades of storage tank outlets，73、Gap，74、Sewage draining exit，75、Two grades of storage tank backwash outlets.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail.Following example will assist in those skilled in the art and are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, to those skilled in the art, without departing from the inventive concept of the premise, it is also possible to make certain adjustments and improvements.These broadly fall into protection scope of the present invention.
The know-why route of the foundation ditch groundwater recharge device of the present invention, as it is shown in figure 1, be monitored pumped well water level, as judged to recharge, then set immersible pump groundwater abstraction in controlling pumped well, i.e. carries out foundation ditch and take out precipitation；The subsoil water of extraction is carried out water examination, can directly carry out water purification if qualified to recharge, enter sedimentation tank if defective and carry out sediment deposition, through aeration tank aerating oxidation, after removing the removal of impurity, ferrimanganic containing the underground water treating device filtration treatment of one-level, secondary filter, it is delivered to water purification storage tank, again carry out water examination, enter water purification after qualified to recharge, defective, again carry out sedimentation tank, carry out successively precipitating, aeration, filtration treatment；The Inlet and outlet water pressure drop of one-level, secondary filter is monitored controlling by solar energy automatic start-stop groundwater treatment with recharging control device, when pressure drop is too low start counter-flushing process, by water purification storage tank through the water outlet reverse pumping that water examination is qualified deliver to two grades, grade one filter carry out backwash；The flow that above-mentioned water purification recharges specifically is controlled by inverted well water level monitoring and control device, and is controlled by alternately recharging and Hui Yang, does not make to recharge interruption.
Specifically, the foundation ditch groundwater recharge device of the present invention includes following 11 devices:
1) artificial cognition: subsoil water is totally spent and can be not required to when reaching standard process, and is directly entered 3 and recharges flow-control.In utilizing solar energy water table measure system to control the interior inspection well in hole, water level is in security interval.
2) precipitation: groundwater abstraction is stored in storage tank (sedimentation tank), after the ferromanganese ion in subsoil water exposes oxidation in atmosphere, generates the precipitate such as ferric oxide, manganese dioxide.
3) flow-control: effusion meter is set between storage tank (sedimentation tank) and filter, the water yield that control processes；The water yield that effusion meter controls to recharge is set after water purification storage tank.The subsoil water shunting do not recharged.
4) aeration: by the oxygen supplement effect of aeration filling+air compressor machine, promote the oxonium ion generation chemical reaction in ferromanganese ion and air, generate the precipitate such as ferric oxide, manganese dioxide.
5) typically filter: by quartz sand filter media filter etc., greater particle size impurity in preliminary filtering underground.
6) ferrimanganic filters: by SS filtering material filter etc., remove the iron and manganese oxides etc. in subsoil water.
7) water storage: storing the clean subsoil water after filtering by two grades of storage tanks, remaining certain moisture storage capacity, in case recharging.
8) backwash: when filter import and export pressure drop do not reach recharge require time, open backwash.
9) recharge: the subsoil water of foundation ditch extraction can directly recharge after water examination is qualified, otherwise should be processed by treatment device for water, and can recharge after water examination is qualified, utilize solar energy water table measure system to control water level in inverted well.
10) Hui Yang: supercharging blowback is set and raises subsoil water in inverted well, recharge, Hui Yang alternately.
11) monitoring: recharge groundwater level by the monitoring of solar energy level of ground water automatic monitoring means, and the water level monitored by periphery automatically controls the amount of recharging of backflow device.
The specific embodiment of foundation ditch groundwater recharge device is as follows:
Embodiment 1
The present embodiment relates to a kind of foundation ditch groundwater recharge device, its structural representation is as shown in Figure 3, including the pumped well 1 being sequentially connected, one-level storage tank 2, aeration unit, grade one filter 5,6, two grades of storage tanks 7 of secondary filter and inverted well 8, also include backwash unit, control processing unit and water level monitoring unit；Described backwash unit is connected with grade one filter 5, secondary filter 6 respectively；Described water level monitoring unit is connected with 1, two grades of storage tanks 7 of pumped well and inverted well 8 respectively；What described control processing unit included being connected with pumped well 1 draw water control subelement, with recharge water processing control subelement that treatment device for water is connected and recharging and flow-control subelement of being connected with inverted well 8.A preferred embodiment as the present embodiment, water processing control subelement is additionally included in the outlet bottom the aeration tank 4 of connection aeration unit and the first-class gauge 10 of setting on the pipeline of the water inlet of grade one filter 5, and then realize the control to the water yield processed, it is included on the pipeline that the outlet of secondary filter 6 is connected the second gauge 11 arranged with inverted well 8, and then realize the water yield controlling to recharge, and control the subsoil water shunting do not recharged.
In the present embodiment, described water level monitoring unit uses the automatic monitoring means of solar energy water level (solar energy water level detection case 17)；Utilize this solar energy level of ground water automatically to monitor water level in case 17 controls the interior inspection well in hole and be in security interval (Fig. 4).
It is provided with the first immersible pump 12 in described pumped well, pumps out water through tee T, be connected with one-level storage tank 2, two grades of storage tanks 7, external discharge-channels respectively；Pump out water under the control controlling subelement (in the present embodiment use solar energy automatic start-stop draw water control chamber 14) of drawing water, the most externally discharge in the situation that need not recharge；Directly recharge after qualified by water examination；In the case of water examination is underproof, after one-level storage tank 2 precipitation process, water outlet, successively after aeration unit, grade one filter 5, secondary filter 6 filtration treatment, enters two grades of storage tanks 7, recharges after reaching to recharge water level requirement.
Described one-level storage tank 2 top is provided with water inlet 21, and sidewall is provided with outlet 22, and another sidewall is provided with gap 23 corresponding to presetting at spilling water water level, and bottom is provided with sewage draining exit 24.
Described aeration unit includes aeration tank 4 (Fig. 5) and for the air compressor machine 3 of aeration tank 4 oxygen supply, the water inlet 41 at aeration tank 4 top is connected by pipeline with the outlet 22 of one-level storage tank 2, outlet 42 bottom aeration tank 4 is connected with the water inlet 51 of grade one filter 5, the top of aeration tank 4 is additionally provided with backwash discharge outlet 44, air vent 45 (also can set automatic blow off valve valve air relief), bottom is additionally provided with backwash water inlet 43 (being connected with the backwashing pump of backwash unit), and the pipeline related to uses coating steel pipe, screwed connection.The air aeration board 46 in pipeline is delivered to aeration tank 4 that air compressor machine 3 provides, realizes the oxygen supply aeration of subsoil water in tank by the solarization air cap on aeration board 46.
Described grade one filter 5 (Fig. 6) top is provided with water inlet 51, air vent 55 and backwash discharge outlet 54, bottom is provided with outlet 52 and backwash water inlet 53, the sidewall that grade one filter 5 fills the top in region corresponding with internal filtrate is provided with charging aperture, and the sidewall corresponding with the bottom that region filled by internal filtrate is provided with discharging opening；The outlet 52 of grade one filter 5 is connected with the water inlet 61 of secondary filter 6.
Described grade one filter 5 (quartz filter) lower inside is provided with drainage base plate 56 (can be porous plate or filter screen), quartz sand thickness 57 (highly=2～8mm) is laid on drainage base plate 56, laying quartz sand filter media layer (highly=1.4～1.8m) on quartz sand thickness 57, grade one filter 5 inner upper is provided with flow-stopping plate 58.
Described secondary filter 6 (Fig. 7) top is provided with water inlet 61, air vent 65 and backwash discharge outlet 64, bottom is provided with outlet 62 and backwash water inlet 63, the sidewall that secondary filter 6 fills the top in region corresponding with internal filtrate is provided with charging aperture 66, and the sidewall corresponding with the bottom that region filled by internal filtrate is provided with discharging opening 67；The outlet 62 of secondary filter 6 is connected with the water inlet 71 of two grades of storage tanks 7.
Described secondary filter 6 (SS filtering material filter) lower inside is provided with filter screen, filter screen is laid SS filtrate filtering layer, the PP cotton composite screen of 1.2～1.5m successively, and the THICKNESS CONTROL of SS filtrate filtering layer is at the 40～50% of secondary filter height；Secondary filter 6 inner upper is provided with flow-stopping plate.
Described two grades of storage tanks 7 (clear water tanks) top is provided with water inlet 71, and bottom is provided with sewage draining exit 74, and bottom is provided with outlet 72 and backwash outlet 75, and sidewall is provided with gap 73 corresponding to presetting at spilling water water level.Storing the clean subsoil water after filtering by two grades of storage tanks 7, remaining certain moisture storage capacity, in case recharging.
The backwashing pump 9 of described backwash unit is arranged on the pipeline of the backwash outlet 75 of two grades of storage tanks 7 of connection and the backwash water inlet 71 of secondary filter 6, the water processing control subelement (water processing control case 15) controlled in processing unit is connected with backwashing pump 9, controls it and secondary filter 6, grade one filter 5 are carried out backwash.
Described inverted well 8 is several, is internally provided with the second immersible pump 13.Supercharging blowback is set and raises subsoil water in inverted well 8, recharge, Hui Yang is alternately (such as Fig. 2).By recharging and flow-control subelement controls the recharging and block Hui Yang of subsoil water.Described recharge and flow-control subelement uses solar energy automatic start-stop to recharge and flow-control case 16, utilize it to control water level in inverted well.Automatically monitor case 17 (Fig. 4) monitoring by solar energy level of ground water and recharge groundwater level, and the water level monitored by periphery automatically controls the amount of recharging of backflow device.
The process chart of the foundation ditch groundwater recharge device of the present embodiment is as shown in Figure 2, as shown in Figure 2, technological process specifically includes that extraction mine water → one-level storage tank (sedimentation tank) → aeration filling → one-level (quartz sand) filter → bis-grade (SS filtrate) filter → bis-grade storage tank (clear water tanks) → on-demand recharges.Specifically specifically include that draw water and precipitate operation, aeration operation, filter progress, recharge and return raise operation；
Draw water and precipitate operation: by immersible pump groundwater abstraction, through tee T, one end can directly be discharged, it is adaptable to need not situation about recharging；The other end by water examination qualified after can directly recharge；Otherwise lead to one-level storage tank (sedimentation tank), after precipitation, carry out filtration treatment.In precipitation process, after the ferromanganese ion in the subsoil water in one-level storage tank exposes oxidation in atmosphere, generate the precipitate such as ferric oxide, manganese dioxide.
Aeration operation: injected the air of 0.75～3.00MPa pressure by air compressor machine in aeration fills, make to carry out subsequent filter process after bivalence ferrimanganic is fully oxidized in water.In Air Exposure, by the oxygen supplement effect of aeration filling+air compressor machine, promote the oxonium ion generation chemical reaction in ferromanganese ion and air, generate the precipitate such as ferric oxide, manganese dioxide.
Filter progress:
Subsoil water after aeration initially enters grade one filter (quartz filter by coating steel pipe, greater particle size impurity in preliminary filtering underground), open quartz filter inlet valve and flowing water Valve, water discharging valve and back flush valves are closed simultaneously, water after filtration enters secondary filter (SS filtering material filter by flowing water Valve, by SS filtering material filter, remove the iron and manganese oxides etc. in subsoil water), it is similar to, open SS filtering material filter inlet valve and flowing water Valve, water discharging valve and back flush valves are closed simultaneously.It is standby that subsoil water after two filters filter enters two grades of storage tanks (clear water tanks).
When water processing control subelement detects that the inlet and outlet pressure fall of secondary filter diminishes, can not meet and recharge when requiring, open counter-flushing process, i.e. close one-level, the inlet valve of secondary filter and flowing water Valve, water discharging valve and back flush valves are opened simultaneously, utilize in two grades of storage tanks (clear water tanks) and carry out backwash through the subsoil water that water examination is qualified, until inlet and outlet pressure fall recovers normal.
Recharge and return and raise operation: through the subsoil water that water examination is qualified; utilize solar energy to be recharged by monitoring groundwater level automatic start-stop and flow-control case controls recharging and blocking Hui Yang of subsoil water; multiple stage water pump is set simultaneously, alternately recharges and Hui Yang, do not make to recharge interruption.
It was verified that the water quality of the recharge water after the foundation ditch groundwater recharge device process of the present embodiment is very significantly improved, recharge water will not cause the water quality of local ground watering degenerate and pollute after recharging.Meanwhile, the foundation ditch groundwater recharge device of the present embodiment is used so that foundation ditch periphery groundwater level not continuous decrease during base pit dewatering, it is possible to keep constant water level, it is ensured that foundation ditch periphery will not cause surface subsidence because of precipitation.
It needs to be noted: in the present embodiment, the selection of filter filled media is on the premise of fully having investigated existing filter filled media, the scheme that combined filtering effect and filtration cost determine after accounting for, particular content is as follows:
More medium filter (one-level, secondary filter) is processed for groundwater recharge, current filter tank body is commonly used fiberglass, rustless steel and carbon steel lining anticorrosive coat and is made, at the pipeline of the various necessity of filter peripheral hardware and valve etc., according to recharging with the requirement of water, the filtrate used mainly has quartz sand filter media, manganese sand filtering material, and multiple filter can only load a kind of filtrate by each filter, the mode using series connection connects, also can be layered several filtrates of filling, use parallel way to connect.
The use of filter is pressed some cycles and is run, and each cycle is divided into filtration, backwash and is just washing three steps；The purpose of backwash is to remove the dirt of accumulation in filtering layer, to recover the retaining power of filtering layer.Filter run flow velocity about 8～10m/h, when it run to current do not reach permissible value by the pressure drop of filtering layer time, stop filter, beginning backwash.Now the water in filter is discharged into the upper limb of filtering layer, is then fed into the air of certain pressure, after purging a few minutes, in the case of continuing press-in air, reversely sending water in filter, its intensity should make filtering layer expand about 40%～50%, thus reaches the purpose of reverse blowdown.Finally, forward water inlet is qualified to effluent quality, then starts filtration of resuming operation.
Based on above-mentioned principle, first, SS filtrate is investigated by the present embodiment；SS filtrate has good deferrization and demanganization and purifying water effect (filter quality is better than manganese sand filtering material), and its dominant mechanism is the comprehensive function of flocculating sedimentation and adsorption filtration.Owing to the main component of SS filtrate is silicon, ferrum, aluminum, iron salt and aluminium salt that Qi Zhongtie, aluminum are formed after dissolving in water are good flocculant, and the various pollutant in ferrum, manganese and water are had flocculating sedimentation effect；SS filtrate is vesicular texture, rough surface, and porosity is up to more than 50%, and specific surface area is relatively big, and surface can be high, and the various pollutant in ferrum, manganese and water are had good physics cut-off filter and chemisorption.
SS filtrate is as shown in table 1 below with manganese sand filtering material Performance comparision:
Table 1SS filtrate and manganese sand Performance comparision
The relevant technical parameter of application SS filtrate when table 2 below lists design deferrization and demanganization filter:
Table 2
The present embodiment has investigated the quantity of SS filtrate needed for different-diameter filter further, such as table 3 below:
Table 3
| Sequence number | |||||
| Tank diameter (mm) | Filtering layer volume (m3) | Filtrate weight (Kg) | Filtrate quantity (bag) | Thickness of filter bed (m) | |
| 1 | 400 | 0.14 | 125 | 5 | 1.1 |
| 2 | 600 | 0.31 | 250 | 10 | 1.1 |
| 3 | 800 | 0.6 | 500 | 20 | 1.2 |
| 4 | 1000 | 0.94 | 750 | 30 | 1.2 |
| 5 | 1200 | 1.41 | 1125 | 45 | 1.25 |
| 6 | 1400 | 1.92 | 1550 | 62 | 1.25 |
| 7 | 1600 | 2.5 | 2000 | 80 | 1.25 |
| 8 | 1800 | 3.18 | 2550 | 102 | 1.25 |
| 9 | 2000 | 4.06 | 3250 | 130 | 1.3 |
| 10 | 2200 | 4.94 | 3950 | 158 | 1.3 |
| 11 | 2400 | 5.9 | 4700 | 188 | 1.3 |
| 12 | 2600 | 6.9 | 5550 | 222 | 1.3 |
| 13 | 2800 | 8.0 | 6400 | 256 | 1.3 |
| 14 | 3000 | 9.2 | 7350 | 294 | 1.3 |
| 15 | 3200 | 10.5 | 8400 | 336 | 1.3 |
Accounting in conjunction with above-mentioned investigation result, filter effect and filtration cost, the present embodiment finally determines: grade one filter uses quartz filter, and secondary filter uses SS filtering material filter.On this basis, investigating the optimal filling mode of the filter medium in each filter course further, high spot reviews SS filtrate, result shows that SS filtrate uses and must is fulfilled for following condition:
1) the former water of deferrization and demanganization must aeration.Use SS filtrate removing of iron and manganese, it is necessary to oxygenic aeration aoxidizes, make major part ferromanganese ion become the precipitate being insoluble in water, could remove through SS media filtration；Thus it is provided with aeration unit in a device.
2) enough thickness of filter bed are ensured.Test shows: the thickness of filter bed (without bed course) in filter should reach 1.2～1.5m, when particularly water quality is poor, will select the upper limit as far as possible.Thickness of filter bed is inadequate, penetrates readily through filtering layer when load is excessive.
3) there are enough backwash spaces.Test confirms: SS filtrate unit weight is relatively light, will leave the backwash expansion space of 40～50%, otherwise easily block upper water distribution filter, and filtrate does not washes clean yet.
4) will be to SS filtrate cleaning down.SS filtrate is cellular granule, and dust is more.When using for the first time, must thoroughly clean and just can come into operation.Rinse with former water when washing material, can backwash and just washing repeatedly, until the clean draining of cleaning down become clear till.It is based on this, assembly of the invention arranges backwash unit, use water processing control subelement accurately to control it and secondary filter, grade one filter are carried out backwash；Farthest safeguard the filter effect of SS filtering material filter.
5) three days will be to filtrate backwash 1 time.SS filtrate necessary backwash in every 3 days 1 time, to ensure life-time service.As backwash will be hardened not in time, affect purifying water effect and service life.This backwash operation is accurately controlled by water processing control subelement equally.
Embodiment 2
The present embodiment relates to a kind of foundation ditch groundwater recharge device, and its device composition and process operations are with embodiment 1.Institute's difference is, the present embodiment is selected differently from embodiment 1 to filter packing in one-level, secondary filter.The present embodiment is to combine foundation ditch groundwater quality situation, filter effect on the basis of embodiment 1 and filter cost, has determined the selection scheme of following several filter packings:
Scheme one:
Grade one filter: quartz sand filter media layer (thickness=1.8m) uses grating quartz sand filter media (d=0.5～1.2mm, d=1～2mm, volume ratio is 1:1.5) to lay.
Secondary filter: with embodiment 1.
Scheme two:
Grade one filter: with embodiment 1.
Secondary filter: as shown in Figure 8, filter screen 611 is laid the compound manganese sand filtering material (MnO of the SS filtrate filtering layer 612 of 1.2m, 0.5m the most successively2>=35%) quartz sand the filtering layer 614 and PP cotton composite screen 615 of filtering layer 613,0.4m.
Scheme three:
Grade one filter: quartz sand filter media layer (thickness=1.6m) uses grating quartz sand filter media (d=0.5～1.2mm, d=1～2mm, volume ratio is 1:1) to lay.
Secondary filter: lay the compound manganese sand filtering material (MnO of the SS filtrate filtering layer 612 of 1.2m, 0.5m on filter screen the most successively2>=35%) quartz sand the filtering layer 614 and PP cotton composite screen of filtering layer 613,0.4m.
Further, by the filter effect of reference examples (with the difference is that only of embodiment 1: only with grade one filter (compound manganese sand filtering material filter)), embodiment 1 and the present embodiment is investigated, find that filter effect is from low to high: reference examples, embodiment 1, scheme one, scheme two, scheme three.Specifically, the filter effect religion reference examples of embodiment 1 improves 20%, and the filter effect of scheme one relatively embodiment 1 improves 8%, and the filter effect of scheme two relatively embodiment 1 improves 12%, and the filter effect of scheme three relatively embodiment 1 improves 25%.As can be seen here, specific composite filter media combination (SS filtrate filtering layer, compound manganese sand filtering material (MnO2>=35%) filtering layer, quartz sand filter media layer) it is remarkably improved filter effect；In conjunction with the single filter with the quartz sand filter media layer that grating quartz sand filter media is laid, its filter effect achieves highly significant raising, and recharge water is practically free of special ion or the gas that can make well pipe corrosion, still keep on top on its cost simultaneously, thus be applicable to commercial introduction application.
In order to farthest improve backwash effect, as a kind of optimal technical scheme of the scheme three of the present embodiment, the drainage base plate in grade one filter uses porous plate, and porous plate is provided with the DN25 water filtering cap of spacing 60mm, quincuncial arrangement.DN25 water filtering cap, spacing 60mm, quincuncial arrangement can be provided with equally on filter screen below secondary filter.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims, and this has no effect on the flesh and blood of the present invention.
Claims (10)
1. a foundation ditch groundwater recharge device, including the pumped well being sequentially connected, recharge treatment device for water and inverted well, it is characterized in that, the described treatment device for water that recharges includes backwash unit and the one-level storage tank being sequentially connected, aeration unit, grade one filter, secondary filter, two grades of storage tanks, and described backwash unit is connected with grade one filter, secondary filter respectively；Described foundation ditch groundwater recharge device also includes controlling processing unit and the water level monitoring unit being connected respectively with pumped well, two grades of storage tanks and inverted well, described control processing unit include the control subelement that draws water being connected with pumped well, with recharge water processing control subelement that treatment device for water is connected and recharging and flow-control subelement of being connected with inverted well.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterised in that be provided with the first immersible pump in described pumped well, the first immersible pump pipeline water outlet, through tee T, is connected with one-level storage tank, two grades of storage tanks, external discharge-channels respectively；Being provided with electromagnetic valve at tee T on described first immersible pump pipeline, this electromagnetic valve is connected with the control subelement that draws water.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterized in that, described aeration unit includes aeration tank and for the air compressor machine to aeration tank oxygen supply, the water inlet at aeration tank top is connected by pipeline with the outlet of one-level storage tank, and the outlet bottom aeration tank is connected with the water inlet of grade one filter；The top of aeration tank is additionally provided with backwash discharge outlet, air vent, and bottom is additionally provided with backwash water inlet, and described backwash water inlet is connected with backwash unit.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterized in that, described backwash unit includes on the total pipeline that backwashing pump, described backwashing pump are arranged on the backwash outlet backwash water inlet with secondary filter of two grades of storage tanks, the backwash water inlet of grade one filter is connected；Described water processing control subelement is connected with backwashing pump, controls it and secondary filter, grade one filter are carried out backwash.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterised in that described in recharge and flow-control subelement uses solar energy automatic start-stop to recharge and flow-control case controls water level in inverted well；Described water level monitoring unit uses the monitoring of solar energy water level detection case to recharge groundwater level, and the water level monitored by periphery automatically controls the amount of recharging of backflow device.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterised in that be provided with drainage base plate, quartz sand thickness and quartz sand filter media layer in described grade one filter from bottom to top；The thickness of described quartz sand thickness is 2～8mm, and the thickness of described quartz sand filter media layer is 0.2～1.8m.
Foundation ditch groundwater recharge device the most according to claim 6, it is characterised in that described quartz sand filter media layer uses grating quartz sand filter media to lay, and the particle diameter of described grating quartz sand filter media is respectively 0.5～1.2mm, 1～2mm.
8. according to the foundation ditch groundwater recharge device described in claim 6 or 7, it is characterised in that described drainage base plate uses porous plate, and this porous plate is provided with some DN25 water filtering caps of spacing 60mm, quincuncial arrangement.
Foundation ditch groundwater recharge device the most according to claim 1, it is characterised in that be provided with filter screen, SS filtrate filtering layer and PP cotton composite screen in described secondary filter from bottom to top；The thickness of described SS filtrate filtering layer is 1.2～1.5m, and this thickness accounts for the 40～50% of secondary filter internal height.
Foundation ditch groundwater recharge device the most according to claim 9, it is characterised in that in described secondary filter between SS filtrate filtering layer and PP cotton composite screen, more than SS filtrate filtering layer is equipped with the compound manganese sand filtration bed of material, quartz sand filtering layer successively；The thickness of the described compound manganese sand filtration bed of material is 0.2～0.5m, and the thickness of described quartz sand filtering layer is 0.2～0.5m.
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| CN201620179108.6U CN205444161U (en) | 2016-03-09 | 2016-03-09 | Foundation ditch groundwater recharge device |
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| CN201620179108.6U CN205444161U (en) | 2016-03-09 | 2016-03-09 | Foundation ditch groundwater recharge device |
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| CN205444161U true CN205444161U (en) | 2016-08-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN106219822A (en) * | 2016-08-31 | 2016-12-14 | 河南台冠电子科技股份有限公司 | A kind of industrial underground water treating device |
| CN109932500A (en) * | 2019-04-12 | 2019-06-25 | 中国地质科学院水文地质环境地质研究所 | The regulator control system and method for multistage level of ground water control in a kind of adjacent area |
| CN110377085A (en) * | 2019-08-23 | 2019-10-25 | 北京市政路桥股份有限公司 | A kind of recharge automatic control device |
| CN112320929A (en) * | 2020-09-21 | 2021-02-05 | 江苏长三角环境科学技术研究院有限公司 | Method for treating foundation pit water by using MBR module according to water quality |
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2016
- 2016-03-09 CN CN201620179108.6U patent/CN205444161U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN106219822A (en) * | 2016-08-31 | 2016-12-14 | 河南台冠电子科技股份有限公司 | A kind of industrial underground water treating device |
| CN106219822B (en) * | 2016-08-31 | 2022-10-18 | 河南台冠电子科技股份有限公司 | Industrial groundwater processing apparatus |
| CN109932500A (en) * | 2019-04-12 | 2019-06-25 | 中国地质科学院水文地质环境地质研究所 | The regulator control system and method for multistage level of ground water control in a kind of adjacent area |
| CN109932500B (en) * | 2019-04-12 | 2023-12-29 | 中国地质科学院水文地质环境地质研究所 | Regulation and control system and method for multistage groundwater level control in adjacent area |
| CN110377085A (en) * | 2019-08-23 | 2019-10-25 | 北京市政路桥股份有限公司 | A kind of recharge automatic control device |
| CN110377085B (en) * | 2019-08-23 | 2024-04-16 | 北京市政路桥股份有限公司 | Recharging automation control device |
| CN112320929A (en) * | 2020-09-21 | 2021-02-05 | 江苏长三角环境科学技术研究院有限公司 | Method for treating foundation pit water by using MBR module according to water quality |
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