CN209053196U - Bridge floor initial rainwater collection processing system implementing - Google Patents
Bridge floor initial rainwater collection processing system implementing Download PDFInfo
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- CN209053196U CN209053196U CN201821435803.XU CN201821435803U CN209053196U CN 209053196 U CN209053196 U CN 209053196U CN 201821435803 U CN201821435803 U CN 201821435803U CN 209053196 U CN209053196 U CN 209053196U
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Abstract
A kind of bridge floor initial rainwater collection processing system implementing, including collection pipe network, Vatch basin, rainfall pumping station, solid-liquid separating equipment, sump, waste-oil scavenger, the clarifying equipment, rainpool ecological floating island combination region being sequentially communicated, and the air supply device and molten explosive-feeding processing device that are connect with clarifying equipment.Abandoned stream collection is carried out to bridge floor initial rainwater using height difference by the collection pipe network being arranged on bridge, initial rainwater after collection by removing the biggish inorganic particle of specific gravity in initial rainwater after removal floating material and biggish suspended matter again, then water is adjusted, the grease contamination in initial rainwater is removed again, the impurity and pollutant for removing the fine suspension in initial rainwater again and being attached on suspended matter, qualified discharge after deliquescent pollutant in last intensified ecological removal initial rainwater.The different pollutants in bridge floor initial rainwater are removed respectively by multi-step, so that the final qualified discharge of bridge floor initial rainwater.
Description
Technical field
The utility model relates to a kind of collection processing system implementings of rainwater, and in particular to a kind of bridge floor initial rainwater collection processing
System belongs to the construction of sponge Municipal engineering.
Background technique
The initial rainwater of bridge floor has dissolved the pollutions gas such as a large amount of sour gas, vehicle exhaust, plant gas in air
Body, after the bridge floor that lands, and due to washing away asphalt concrete road, motor vehicle engine oil leakage, accident etc., so that rainwater early period
In containing the polluters such as a large amount of organic matter, pathogen, heavy metal, grease, suspended solid, therefore the dirt of bridge floor rainwater early period
Dye degree is higher, has been usually more than the pollution level of common municipal sewage.And due to having in motor vehicle exhaust discharge
Evil substance, motor vehicle engine oil water clock, the reasons such as accident leakage, bridge floor initial rainwater contain a large amount of pollutants for example SS, COD, TN,
TP and polycyclic aromatic hydrocarbon and oil etc., bridge floor initial rainwater amount is few, but the wherein more general road surface initial-rainwater of pollutant concentration
Height, such as it is directly discharged into river receiving water body without processing, serious pollution will certainly be will cause to water body, it is therefore necessary to bridge
Face rainwater is handled.
As the application for a patent for invention of publication number CN106894337A, entitled " bridge floor sewage water treatment method " disclose
A kind of bridge floor sewage water treatment method, 1) storm sewers of bridge floor are connect with water collection channel；2) when rainy or road surface
When watering cleaning, sewage enters separator box by water collection channel, closing solenoid valve one, and turn-on flow rate sensor 30-60 minutes,
Opens solenoid valve three；3) it blows to tracheal pressure, while starting spoke rotating vane and starting to separate sewage and sundries, it will
Groceries are discharged into conveyer belt discharge；Constantly being blown into pipe to cold wind and being blown into cold wind prevents sundries from giving off a peculiar smell；8) to 30-60 minutes
Later, flow sensor is closed, opens solenoid valve one makes sewage be directly entered outlet conduit discharge.Beneficial effects of the present invention:
The present invention utilizes purification of water quality filter material, and direct purification pollution sources in rainwater, thrifty expense of maintenance and management not only largely reduce in the early stage
Waste yield, while being that pollution greatly reduces, it is at low cost, it is suitble to promote the use of.
Publication number CN105862585A, the patent of invention of entitled " bridge floor sewage-treatment plant and its processing method "
Disclose a kind of bridge floor sewage-treatment plant, including water collection channel, which is characterized in that the water collection channel with separate
Case connection is equipped with water filter plate in the separator box, is laid with below water filter plate and header tank, passes through motor-driven spoke and turns
Leaf is mounted on above the water filter plate；The discharge port of spoke rotating vane is equipped with the conveyer belt of transmission translator drive, conveyer belt
Discharge end is equipped with garbage outlet gear door；Cold wind, which is connected with, above conveyer belt in the separator box is blown into pipe；Of the invention has
Beneficial effect: the present invention utilizes purification of water quality filter material, in the early stage direct purification pollution sources in rainwater, thrifty expense of maintenance and management, not only
Waste yield is largely reduced, while being that pollution greatly reduces, it is at low cost, it is suitble to promote the use of.
Notification number CN203729198U, the utility model of entitled " freeway bridge face diameter adfluxion accepted way of doing sth processing unit " are special
Benefit discloses a kind of freeway bridge face diameter adfluxion accepted way of doing sth processing unit, is composed in series by inlet well and sedimentation basin, inlet well with
Conducting valve is set between sedimentation basin, and the top of inlet well is arranged in water inlet and overflow port, and conducting valve is arranged under inlet well
Portion；Level switch is arranged below water inlet；It is provided with inclined plate area in the middle part of sedimentation basin, bottom is slope surface, the bottommost of slope surface
Be provided with sand setting canal, drain hole is provided with precipitating bottom of pond portion, and oil discharge outlet and water outlet are provided with sedimentation basin top, oil discharge outlet with go out
Oil baffle is additionally provided between the mouth of a river.The utility model carries out grease to bridge floor rainfall runoff and consolidates three's separation, takes up little area, imitates
Rate is high, can be placed in bridge two sides nearby.The integrated sewage treatment unit that the utility model manufactures and designs, may be implemented to standardize
The production of mass, processing and manufacturing, transport installation are all very convenient, and factory's batch micro operations, the quick peace in scene may be implemented completely
The high-efficient homework of dress.
Although above-mentioned file is directed to the collection and processing of bridge floor rainwater, but be not the spy for bridge floor initial rainwater
Property is thoroughly handled, and does not make full use of the ecological environment in sponge city itself to carry out in-depth processing to sewage, because
This still needs to improve.
Utility model content
The utility model problem not thorough enough for the processing to sewage in current bridge floor rainwater treatment method and system,
A kind of bridge floor initial rainwater collection processing system implementing is proposed, depth sufficiently is carried out to rainwater in conjunction with bridge floor and the topography and geomorphology of surrounding
Processing.
The utility model in order to solve the above problem used by technological means are as follows: a kind of bridge floor initial rainwater collects processing system
System, collection pipe network, Vatch basin, rainfall pumping station, solid-liquid separating equipment, sump, waste-oil scavenger, clarification including being sequentially communicated are set
Standby, rainpool ecological floating island combination region, and the air supply device and molten explosive-feeding processing device that are connect with clarifying equipment.
Further, sump is equipped with level sensing control device, controls and connects with waste-oil scavenger.
Further, pipe network is collected to include bridge deck drainage mouth and be fixed on the storm sewer that connect with discharge outlet of bridge outside,
The other end of storm sewer is connected to Vatch basin.
Further, Vatch basin is tubule Vatch basin, and the two sides of bridge are arranged in, and the water outlet and rainfall pumping station of Vatch basin connect
It connects.
Further, rainfall pumping station is the prefabricated pumping plant of integration, and interior to be equipped with grid, the water inlet of rainfall pumping station is connected to lattice
Grid, water outlet are sent to solid-liquid separating equipment.
Further, grid is basket type grid and/or crushed rack bar screen.
Further, elevator pump is additionally provided in rainfall pumping station, grid water outlet is pumped to solid-liquid separating equipment by elevator pump.
Further, solid-liquid separating equipment integrates sand setting equipment, girt-water separation equipment and sediment pump, and sand setting equipment is eddy flow
Setting pot is connect with blowing device, and water outlet is connected to sump, and sand setting outlet is connected by sediment pump and girt-water separation equipment
It connects；The water outlet of girt-water separation equipment is connected to sump, and the bottom of girt-water separation equipment is equipped with mud discharging mouth and is connected to sludge-tank.
Further, waste-oil scavenger includes vertical-flow air flotation machine and high pressure gas generation device, high pressure gas generation device
Gas outlet be connected to the air inlet of vertical-flow air flotation machine, vertical-flow air flotation machine water outlet is connected to clarifier, vertical-flow gas
The top of floating machine is equipped with mud discharging mouth and is connected to sludge-tank.
Further, clarifying equipment includes the reaction zone connecting with waste-oil scavenger water outlet, by guiding region and reaction zone
The settling zone of connection and the sludge bucket being arranged in below settling zone, the water outlet of settling zone are connected to rainpool ecological floating island
The mud discharging mouth of combination region, sludge bucket is connected to sludge-tank.
Further, reaction zone is connect with air supply device and molten administration device, and is equipped with agitating device.
Further, the drug of dispensing is flocculant.
Further, flocculant PAM, concentration are mass content 1-3 ‰.
Further, agitating device is air stirrer.
Further, rainpool ecological floating island combination region is the association that rainpool and ecological floating island form, ecological floating island
Plant the landscape plant absorbed to nutrients.
Further, the plant of ecological floating island plantation is canna, cyperus alternifolius, cattail, calamus, Lythrum salicaria, the green fox-brush of powder
Algae, yellow flag.
The beneficial effects of the utility model are:
1. the characteristics of the utility model is for pollutant contained by bridge floor initial rainwater, removes bridge floor initial stage rain step by step
Multiple pollutant in water makes bridge floor initial rainwater be finally reached discharge standard.
2. the utility model automation technolo degree is high, structure management is simple, and non-maintaining degree is high, stable effluent quality,
Operating cost is low.
Detailed description of the invention
Fig. 1 is one flow diagram of embodiment；
Fig. 2 is seven rainpool ecological floating island combination region schematic diagram of embodiment；
In figure: 1. rainpools, 2. peripheral chinampas, 3. center chinampas, 4. anchors.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Embodiment one
As shown in Figure 1, a kind of bridge floor initial-rainwater treatment system, including collect pipe network, Vatch basin, rainfall pumping station, solid-liquid
Separation equipment, sump, waste-oil scavenger, clarifying equipment, the sequentially connected processing in front and back of rainpool ecological floating island combination region eight
Module is further provided with air supply device and connect with molten explosive-feeding processing device with clarifying equipment, and air supply device is that clarifying equipment is blown, this
In embodiment, air supply device is set as air blower, therefore, in the present embodiment, is additionally provided with an equipment room, by air blower,
Medicament, molten administration device and other control panels relevant to present treatment system used in clarifying equipment are each provided at equipment room
Interior, compressed air is delivered to clarifying equipment by pipeline by air blower, and molten administration device will be conveyed by pipeline after medicament dissolution
To clarifying equipment.
Collecting pipe network includes discharge outlet and storm sewer.Discharge outlet is the original structure of bridge floor, and storm sewer passes through bracket
It is fixed on the outside of bridge, bridge floor initial rainwater imports storm sewer by the discharge outlet of bridge floor.In addition it is arranged in the two sides of bridge and cuts
Stay well, storm sewer is connected to catch basin, catch basin using tubule abandoned stream principle by bridge floor initial rainwater by tubule retain into
Enter rainwater Boosting pumping station.
Rainfall pumping station is the prefabricated pumping plant of integration, and interior to be equipped with grid and elevator pump, the water inlet of rainfall pumping station flows directly into lattice
Grid, under the interception of grid by rainwater floating material and biggish suspended matter block, it is regular according to actually rainy situation
Or the pollutant aperiodically intercepted to grid is cleared up, the water outlet of rainfall pumping station is then pumped to separation of solid and liquid by promotion and sets
It is standby.
Solid-liquid separating equipment integrates sand setting equipment, girt-water separation equipment and sediment pump, and sand setting equipment is rotational flow grit chamber, this
It is clock-type setting pot in embodiment, water outlet is connected to sump, and sand setting outlet is connected by sediment pump and girt-water separation equipment
It connects；The water outlet of girt-water separation equipment is connected to sump, and the bottom of girt-water separation equipment is equipped with mud discharging mouth and is connected to sludge-tank.
The bridge floor initial rainwater for removing floating material and biggish suspended matter flows into sand setting area, benefit by the water inlet tangential direction of sand setting equipment
With in equipment motor and transmission device drive turntable and ramp type blade that sand grains is got rid of due to the difference of suffered centrifugal force
To pool wall, fall into the sand hopper of sand setting equipment, organic matter is then sent back in waste water and flows to collecting-tank through water outlet.By adjusting turn
Speed can reach best sand setting effect.Sand aqueous mixtures in sand hopper are inputted at the top of sand setting equipment through drain pipe using sediment pump
The water tank of grit water separator, the biggish inorganic particle of severe such as sand grains etc. will be deposited on the groove profile bottom of grit water separator in mixed liquor
Portion, in the case where mentioning sand auger, sand grains is promoted along tilting sediment transport pipe, continues to elapse a distance after leaving liquid level, in sand grains
It is sufficiently unloaded through sand removing hole to sand bucket is contained after dehydration, generates unified collect of silt and be disposed according to Ordinary solid waste, with sand water
Water after separation is discharged from the overflow port of grit water separator flows into collecting-tank.
Sump is equipped with level sensing control device, is ultrasonic liquid level detection device in the present embodiment, and water level is equipped with height
Liquid level point and low liquid level point, specific liquid level can be set according to actual use situation, level sensing control device and waste-oil scavenger
Control connection.Dredge pump is additionally provided in sump, dredge pump is two proof submersible sand discharging pumps, a preparation and a use, diving in the present embodiment
Dredge pump is also by liquid level detection device Automatic Control, when ultrasonic liquid level detection device detects in sump as high liquid level
When, control proof submersible sand discharging pump is opened, and the rainwater in sump is sent into waste-oil scavenger, while controlling waste-oil scavenger starting；When super
When sound liquid level detection device is detected in sump as low liquid level, controls proof submersible sand discharging pump and degreasing unit stops working.?
In the course of work of proof submersible sand discharging pump, the control panel in equipment room determines two according to the accumulated operating time of proof submersible sand discharging pump
The start-stop sequence of proof submersible sand discharging pump, guarantees that proof submersible sand discharging pump will not overload operation.
Waste-oil scavenger includes vertical-flow air flotation machine and high pressure gas generation device, and the gas outlet of high pressure gas generation device connects
It is connected to the air inlet of vertical-flow air flotation machine, vertical-flow air flotation machine water outlet is connected to clarifier, the top of vertical-flow air flotation machine
Sludge-tank is connected to equipped with mud discharging mouth.The bubble of certain size is passed through into waste water by high pressure gas generation device, makes waste water
In hydrophobic contaminant granular absorption on bubble, on bubble floating to the water surface and formed include pollutant foam
Layer collects froth bed to remove pollutant.
The precipitating that clarifying equipment includes the reaction zone connecting with waste-oil scavenger water outlet, is connect by guiding region with reaction zone
Area and the sludge bucket being arranged in below settling zone, the water outlet of settling zone are connected to rainpool ecological floating island combination region, sludge
The mud discharging mouth of bucket is connected to sludge-tank.
Reaction zone is connect by pipeline with air blower and molten administration device, and agitating device, this reality are equipped in reaction zone
Apply the air stirrer in example to connect with air blower.The flocculant for needing to launch dissolves in the molten administration device of equipment room
Afterwards as pipeline is admitted in reaction zone, the compressed air that air blower generates is admitted in reaction zone also by other pipeline,
Compressed air plays the role of stirring while bringing oxygen into reaction zone, makes the suspended matter in rainwater and is attached to particulate matter
On do not allow organic matter to react to form suspended matter colloid flocculate with flocculant, into settling zone, flocculate generate precipitating falls into
In sludge bucket, water outlet flow to rainpool ecological floating island combination region, and the silt of sludge bucket discharge can be unified to collect according to general solid
Waste is disposed.
Rainpool ecological floating island combination region is the association that rainpool and ecological floating island form, and ecological floating island is planted to nutrition
The landscape plant that object is absorbed.Rainpool can be original pool or the pond manually dug out near bridge floor, inside set
Set ecological floating island.Ecological floating island is tightened using artificial band using single floating bed and is spliced into certain moulding, and moulding fixed border is adopted
Spliced with 90UPVC water pipe, chinampa is fixed to be fixed using 6mmSUS304 stainless steel zipper.Aquatic plant is planted on ecological floating island
Object is fixed using 15-25mm partial size light ceramic, be typically chosen plantation canna, cyperus alternifolius, cattail, calamus, thousand bend
The green watermifoil of dish, powder, yellow flag etc..Ecological floating island is using ecological engineering principle, the content of the organic matter in initial rainwater of degrading,
It can be such that bridge floor initial rainwater body transparency increases substantially, while water quality indicator is also improved, especially to algae
Class has good inhibitory effect.Ecological floating island is the richness absorbed in water using the root system of plant to the most important effect of purification of water quality
Nutrient laden substance, such as total phosphorus, ammonia nitrogen, organic matter etc., so that the nutrition of water body is shifted, mitigation water body is due to closing or certainly
Recycle that insufficient bring water body is stench, eutrophication.
Embodiment two
In the present embodiment, the drug that reaction zone is launched is the flocculant that concentration is mass content 1-3 ‰, such as PAM.
Embodiment three
In the present embodiment, agitating device is mechanical stirring device.
Example IV
In the present embodiment, the top of catch basin is equipped with overflow well, with the continuity of rainy spell, amount of rainfall that bridge floor collects
It becomes larger, and the pollutant of bridge floor has been washed completely substantially, the content of water pollutant substantially reduces, the rainwater in later period
More than being discharged into other processing system from overflow pipe overflow after certain interception ratio.
Embodiment five
In the present embodiment, grid is using crushing type grid, by the floating material for entering rainfall pumping station and biggish suspension
Object is crushed, and is avoided the need for the rubbish that grid is often pulled out to its interception of removal, is alleviated artificial operation.
Embodiment six
In the present embodiment, grid uses grid and crushes the structure that grid uses simultaneously, the grid gap in grid
For 1-5mm, and the little particle that large-scale floating material is ground into 3-10mm by grid is crushed, grid is utilized after bulky refuse is crushed
It is intercepted, has not only avoided solid refuse from blocking follow-up equipment, but also be avoided that bulky refuse footprint area is excessive, needed lattice often
The problem of aperture plate taking-up reduces the treatment effeciency of this system to remove solid refuse.
Embodiment seven
In the present embodiment, rainpool ecological floating island combination region as shown in Fig. 2, rainpool 1 be the pool naturally occurred or according to
The pool manually dug out according to landform, the circle close to 1 edge of rainpool are provided with peripheral chinampa 2, in the intermediate setting of rainpool 1
There is center chinampa 3, the setting of multiple ecological floating islands increases the cultivated area of water plant, while being also beneficial in rainpool 1
The uniform dissolution of oxygen, avoid single ecological floating island area it is excessive when cause chinampa decentralization illumination insufficient and make organic matter degradation
The problems such as insufficient；Peripheral chinampa 2 and center chinampa 3 are provided with multiple progress of anchors 4 position and fix, and ecological floating island is avoided to exist
Position over-deflection on the water surface and be brought together and be even overlapped.
The utility model introduces setting after rainwater conflux is entered the drainpipe connecting with discharge outlet by the discharge outlet of bridge floor
Catch basin in bridge side, catch basin are retained rainwater into Boosting pumping station in a manner of tubule abandoned stream.It is original using landform and bridge floor
Device bridge floor initial rainwater is collected, solve the problems, such as that bridge floor rainwater is difficult to collect.
Boosting pumping station setting grid in rainwater floating material and biggish suspended matter intercepted and/or crushed removal
Afterwards, the biggish inorganic particle precipitation and separation of specific gravity in rainwater is removed using sand setting equipment and grit water separator.Removal is large-scale solid
The bridge floor initial rainwater of body rubbish is sent into sump and carries out runoff investigation, then using the water level control degreasing unit of sump to
Bubble is passed through in rainwater, grease, which is adsorbed on bubble, forms the froth bed containing grease contamination in the water surface, collects froth bed removal
Grease.
Rainwater after oil removing makes fine suspension in rainwater by the way that medicament is added in clarifying equipment and is attached to suspension
Impurity and pollutant on object formed biggish colloid flocculation object net catch, roll up sweep suspended matter tiny in rainwater after precipitate and go
It removes.
Finally, rainwater enters rainpool ecological floating island combination region, rainpool and the artificial floating plant and microorganism led are utilized
Absorb organic matter, nutrient and the fine particulates decomposed in removal rainwater.
Abandoned stream collection is carried out to bridge floor initial rainwater using height difference by the collection pipe network being arranged on bridge in this way, after collection
Initial rainwater by removal floating material and biggish suspended matter after remove the biggish inorganic particle of specific gravity in initial rainwater again,
Then water is adjusted, then removes the grease contamination in initial rainwater, then remove the fine suspension in initial rainwater
And it is attached to impurity and pollutant on suspended matter, it is up to standard after deliquescent pollutant in last intensified ecological removal initial rainwater
Discharge.The different pollutants in bridge floor initial rainwater are removed respectively by multi-step, so that bridge floor initial rainwater is final
Qualification discharge.
Above embodiments are only for illustration of the utility model, rather than limitations of the present invention, related technical field
Technical staff in the case where not departing from the spirit and scope of the utility model, can also make a variety of changes or convert, because
This all equivalent technical solution also should belong to the protection scope of the utility model, and the protection scope of the utility model should be by
Each claim limits.
Claims (10)
1. a kind of bridge floor initial rainwater collection processing system implementing, it is characterised in that: including be sequentially communicated collection pipe network, Vatch basin,
Rainfall pumping station, solid-liquid separating equipment, sump, waste-oil scavenger, clarifying equipment, rainpool ecological floating island combination region, and with it is clear
The air supply device and molten explosive-feeding processing device of clear equipment connection.
2. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: sump is equipped with level sensing
Control device is controlled with waste-oil scavenger and is connected.
3. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: collecting pipe network includes bridge floor row
The mouth of a river and it is fixed on the storm sewer being connect on the outside of bridge with discharge outlet, the other end of storm sewer is connected to Vatch basin.
4. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: Vatch basin shuts off for tubule
Well, is arranged in the two sides of bridge, and the water outlet of Vatch basin is connect with rainfall pumping station.
5. bridge floor initial rainwater collection processing system implementing as claimed in claim 4, it is characterised in that: rainfall pumping station is that integration is pre-
Pumping plant processed, interior to be equipped with grid, the water inlet of rainfall pumping station is connected to grid, and water outlet is sent to solid-liquid separating equipment.
6. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: solid-liquid separating equipment is integrated heavy
Sand equipment, girt-water separation equipment and sediment pump, sand setting equipment are rotational flow grit chamber, are connect with blowing device, water outlet connection
To sump, sand setting outlet is connect by sediment pump with girt-water separation equipment；The water outlet of girt-water separation equipment, which is connected to, to catchment
Well, the bottom of girt-water separation equipment are equipped with mud discharging mouth and are connected to sludge-tank.
7. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: waste-oil scavenger includes vertical-flow
Air floatation machine and high pressure gas generation device, the gas outlet of high pressure gas generation device are connected to the air inlet of vertical-flow air flotation machine,
Vertical-flow air flotation machine water outlet is connected to clarifier, and the top of vertical-flow air flotation machine is equipped with mud discharging mouth and is connected to sludge-tank.
8. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: clarifying equipment includes and oil removing
The reaction zone of equipment water outlet connection, the settling zone that is connect by guiding region with reaction zone and it is arranged in below settling zone
Sludge bucket, the water outlet of settling zone are connected to rainpool ecological floating island combination region, and the mud discharging mouth of sludge bucket is connected to sludge-tank.
9. bridge floor initial rainwater collection processing system implementing as claimed in claim 8, it is characterised in that: reaction zone and air supply device and
Molten administration device connection, and it is equipped with agitating device.
10. bridge floor initial rainwater collection processing system implementing as described in claim 1, it is characterised in that: rainpool ecological floating island group
Closing area is the association that rainpool and ecological floating island form, and ecological floating island plants the landscape plant absorbed to nutrients.
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| CN201821435803.XU CN209053196U (en) | 2018-09-04 | 2018-09-04 | Bridge floor initial rainwater collection processing system implementing |
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| CN201821435803.XU CN209053196U (en) | 2018-09-04 | 2018-09-04 | Bridge floor initial rainwater collection processing system implementing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112978967A (en) * | 2021-05-11 | 2021-06-18 | 中国恩菲工程技术有限公司 | Sewage damming and lifting system |
-
2018
- 2018-09-04 CN CN201821435803.XU patent/CN209053196U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112978967A (en) * | 2021-05-11 | 2021-06-18 | 中国恩菲工程技术有限公司 | Sewage damming and lifting system |
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