CN106836441B - A kind of dirty optimization system of interception type drainage pumping plant that adding porous permeable divider wall section - Google Patents
A kind of dirty optimization system of interception type drainage pumping plant that adding porous permeable divider wall section Download PDFInfo
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- CN106836441B CN106836441B CN201710202386.8A CN201710202386A CN106836441B CN 106836441 B CN106836441 B CN 106836441B CN 201710202386 A CN201710202386 A CN 201710202386A CN 106836441 B CN106836441 B CN 106836441B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The present invention relates to a kind of interception type drainage pumping plants for adding porous permeable divider wall to cut dirty optimization system, collecting-tank including open top, the upstream combined pipeline or rainwater water inlet pipe being connected with collecting-tank, the inlet channel being successively set on along water (flow) direction in collecting-tank, trash rack, porous permeable divider wall and training wall, trash rack and porous permeable divider wall, training wall encloses jointly to be set as open top and shuts off pond with the mutually independent embedded sewage of collecting-tank, collecting-tank is separated into two mutually independent branch's collecting-tanks by embedded sewage pond of shutting off, it is all provided with rain pump in each branch collecting-tank and pumps the drainage pipeline networks being connected with rainwater, embedded sewage shuts off the blowdown pipe network for being equipped with sewage intercepting pump in pond and being connected with sewage intercepting pump.Compared with prior art, present system is suitable for built drainage system pumping plant, the high efficiency for the separate sewage system rainfall pumping station for having hybrid junction cuts dirty transformation.
Description
Technical field
The invention belongs to rain technical field of sewage, are related to a kind of interception type draining pump for adding porous permeable divider wall
It stands and cuts dirty optimization system.
Background technology
Drainage pumping plant is used for the rain sewage discharge that charge for remittance service area is collected, and can be divided into interflow pumping plant and (serve combined system row
Water system) and rainfall pumping station (serving separate sewage system).In combined drainage system, when fine day, first rain and light rain,
The pipeline moderate rain discharge of sewage is small, and the dry days sewage intercepting pump of design causes polluter to be easily deposited on drainage pipeline because flow is small
In Water Collection Tank in Drainage Pumping Station, effectively sewage quantity can only be shut off, and be difficult to have corresponding pollutant or pollutional load
Effect is shut off；Rainy day overflow or rainwater pump be when putting river, the deposit or pollutional load of accumulation early period by high flow rate rain drop erosion
River is put with overflow, the generation of receiving water body water quality is seriously affected.Meanwhile the Storm Sewer Network of China's separate sewage system, because each
The sewage that kind of reason causes Storm Sewer Network hybrid junction different degrees of, come true on combined system pipe network, although rainfall pumping station exists
Sewage intercepting pump is additionally arranged in transformation, but the rainy day overflow for equally existing similar interflow pumping plant puts river pollution.
The drainage system (interception type drainage pumping plant) for cutting dirty pump is installed or is additionally arranged since pumping plant water collecting pool volume is according to most
Heavy rain water pump 30s flow designs, much larger than catchment pool area and the volume needed for the design discharge for cutting dirty pump 5min, this makes
Dry days or light rain rainwater pump not actuated period, and a certain proportion of pollutant is deposited on pipeline sum aggregate in the form of deposit in rain sewage
In pond；Due to cutting the suction capactity of dirty pump and being limited in scope, it is difficult to effectively convey this part rain sewage pollution load.Rainy day rain
When river is put in water pump unlatching, due to rainwater pumping, pipeline and collecting-tank flow field flow velocity increase, the pollutional load quilt of accumulation early period
It acutely twitches to stir and inhales and put river with rainwater, exacerbate water pollution.Simultaneously as carrying out greatly being completed the drainage pumping plant to come into operation
There are certain difficulty (e.g., during transformation can be had an impact to rain sewage transport in region) for scale engineered, therefore
It needs to seek a kind of relatively simple, short construction period method, to improve dry days accumulation of pollutants problem in collecting-tank, improves and cut
Dirt pump effectively cuts dirty performance.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind can be used for existing section
The improvement and design of formula drainage pumping plant is stayed, the ability of drainage pumping plant effectively catching pollutant burden can be significantly improved, it is excessive to reduce the rainy day
The interception type drainage pumping plant for adding porous permeable divider wall for flowing pollution risk cuts dirty optimization system.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of dirty optimization system of interception type drainage pumping plant that adding porous permeable divider wall section, which includes open top
Collecting-tank, the upstream combined pipeline that is connected with collecting-tank or rainwater water inlet pipe, along water (flow) direction be successively set on collecting-tank
In inlet channel, trash rack, porous permeable divider wall and training wall, the porous permeable divider wall altogether be equipped with a pair, and
It is opposite to be laid in collecting-tank, the trash rack enclosed jointly with porous permeable divider wall, training wall be set as open top and
Shut off pond with the mutually independent embedded sewage of collecting-tank, collecting-tank is separated into two mutually solely by embedded sewage pond of shutting off
Vertical branch's collecting-tank is all provided with rain pump in each branch's collecting-tank and pumps the drainage pipeline networks being connected with rainwater, described
Embedded sewage shut off the blowdown pipe network for being equipped with sewage intercepting pump in pond and being connected with sewage intercepting pump.
Water inlet slide valve is equipped between the inlet channel and upstream combined pipeline or rainwater water inlet pipe.
The design caliber and the gradient of the upstream combined pipeline or rainwater water inlet pipe are determined by service zone properties.
The porous permeable divider wall is for integral type porous permeable divider wall or by multiple contour divider wall Side by side groupings
Made of combined porous permeable divider wall.
Seam profile in the combined porous permeable divider wall between adjacent two contour divider wall is embedding using intersecting
Mouth or sheet rubber are closed.
The top mark height of the porous permeable divider wall is equal with rainwater pump termination of pumping lowest water level, in bottom absolute altitude and collecting-tank
Bottom absolute altitude is equal.
Thickness >=400mm of the porous permeable divider wall.
The porous permeable divider wall includes hollow platy wall and is uniformly filled in saturating in hollow platy wall
Water packing.
The permeable filler includes quartz sand, cobblestone, anthracite, zeolite or one kind or several in glass sphere
Kind.
The permeable filler is glass sphere, and the grain size of the glass sphere is 4-12mm.
The embedded sewage shut off pond one sewage intercepting pump 5min of dischargeable capacity >=maximum water yield.
Present system passes through porous permeable divider wall and built trash rack, collection in built collecting-tank
The sewage of water conservancy diversion wall construction relative closure in pond shuts off pond (open top), the sewage intercepting pump packet that will be completed or newly set
With which, a sewage that is relatively independent, embedding in rainwater sump is formed to shut off pond.Embedded sewage shuts off pond
Transformation is added, the purpose is in the case where ensureing regional sewerage system prevention waterlogging secured premise, improve dry days and first rain pollutant as far as possible
Efficiency of shutting off.
The porous permeable divider wall is according to built drainage pumping plant internal structure and design size, by prefabricated
The mode of component is constructed and is installed, and can be made one according to reality and block up whole divider wall, also can be by multiple small side by side
The contour divider wall of size, to intersect embedding mouth or be closed seam profile with analogs such as sheet rubbers, with formed one it is stifled whole every
From wall, and the construction period of transformation can be shortened, facilitate managing and protecting for later stage.
The sewage added of the porous permeable divider wall transformation pool volume that shuts off is determined that volume is it by the enclosure space of its enclosing
The product of floor space and porous permeable divider wall height.Under normal circumstances, the sewage after being enclosed in the drainage pumping plant project of reconstruction
The floor space in pond of shutting off determines substantially, can realize that the shut off volume in pond of sewage increases by the height of porous permeable divider wall.
The height of porous permeable divider wall is determined that interior bottom absolute altitude is bottom absolute altitude in collecting-tank, porous permeable isolation by Qi Ding, bottom absolute altitude
The a height of rainwater of top mark of wall pumps termination of pumping lowest water level, and to ensure the intensity and filtering interception effect of porous permeable divider wall,
Its thickness of wall body is in 400mm or more.
When hybrid junction has in the rainfall pumping station of sewage transformation add and cuts dirty pump, it is also necessary to be designed according to combined drainage system
Sewage intercepting pump, the design discharge of design discharge foundation separate unit sewage intercepting pump is according to Code for design of outdoor sewerage engineering
(GB50014) it executes, when dry flow sewage or hybrid junction sewage quantity highest day highest in drainage system service area takes with interception ratio
Value design.
It designs the specification of volume to meet sewage pond of shutting off (dischargeable capacity in retention pond is according to not less than a maximum sewage
The water yield of dam pump 5min designs), it is set as porous permeable divider wall top mark height according to above-mentioned rainwater pump termination of pumping lowest water level
Meter, if cannot meet the volume requirement in retention pond, can properly increase the absolute altitude of porous permeable divider wall, but former after review
The then upper bottom absolute altitude not higher than design rainwater water inlet pipe；Or continue to improve the height pair of porous permeable divider wall by design evaluation
The possible influence of rainwater prevention waterlogging, with the suitable porous permeable divider wall height of determination.
The sewage shuts off, and to be built drainage pumping plant (including drainage system pumping plant and have the rainwater of hybrid junction to pump in pond
Stand) collecting-tank added porous permeable divider wall and shut off pond with embedded sewage.Porous permeable divider wall is prefabricated or field fabrication has
The tabular component of permeable filler is loaded, and can be safeguarded by lifting installation and replacement.The filler is strong with certain machinery
The natural or artificial solid with certain grain size of degree, including but not limited to quartz sand, cobblestone, anthracite, zeolite etc.
Filler, or the glass sphere that manually prepares, preferable particle size is 4-12mm and its grading, or can refer to the system of porous pavement
Give as method prefabricated.
The major function of fill is that under normal circumstances (no block), the filler of filling can be in porous permeable divider wall
Sewage is intercepted to shut off the deposit in pond, and do not influence collecting-tank and sewage shut off pond water level and drainage pumping plant use
Function.Cut dirty pump dwell period, the sewage of drainage system flows into sewage through pipe network and shuts off pond, and deposit or bulky grain therein are dirty
Dye object be intercepted at sewage shut off in the pond in or filler surface and its gap between, the similar effect filtered；When cutting dirty pump operation, deposit
The sewage that product is shut off in sewage in pond is easier to be aspirated by sewage intercepting pump with deposit to be retained；And it intercepts and is isolated in porous permeable
The sewage of wall surface and internal pollutant due to being stockpiled in sump is washed or springs back over dirt constantly reverses through permeable wall
Water shuts off pond, and then is aspirated and be discharged by sewage intercepting pump.This process is all and reciprocal, reaches and improves the dirty efficiency of sewage intercepting pump section
Purpose.
During rainfall, pipeline deposit is washed away by rain sewage into drainage pumping plant, is shut off rain sewage in pond in sewage first
In water level less than before porous permeable divider wall top mark height, this part rain sewage can be discharged by sewage intercepting pump, in addition can be with
The case where intercepting larger pollutant by the filtration of porous permeable divider wall, being retained with dry days is similar.This partial contamination
Load can efficiently utilize sewage intercepting pump suction discharge；When the rainfall middle and later periods, when rainwater conflux amount increases, water level constantly rises
Afterwards, enter branch's collecting-tank by the osmosis of overflow and porous permeable divider wall at the top of porous permeable divider wall, at this time
The rain sewage relative clean of confluence puts river when rainwater, which pumps, to be opened by rainwater pumping, is prevented waterlogging with support area safe.
After long-play, porous permeable divider wall may block seriously, at this time can by porous permeable divider wall into
Row cleans on the spot；Or come out divider wall module hoisting, carry out necessary cleaning；Or integral replacing porous permeable isolation
Wall, to achieve the purpose that be continuing with.
During day-to-day operation, it is heavy that porous permeable divider wall can prevent deposit from being formed in the larger area of collecting-tank
Product；When torrential rain arrives, initial rainwater and pipe network wash away remittance deposit or pollutant before rainwater pump startup, still can be by dirt
Water dam pump shuts off to external sewage pipe, improves the pollutional load to shut off；While collecting-tank is as a whole, as rainfall is effectively deep
Degree increases, it can be achieved that the quick outer row of rainwater, prevents waterlogging.
Compared with prior art, the invention has the characteristics that：
1) it can be achieved the deposit in dry days sewage and initial rainwater being trapped in the embedded sewage of collecting-tank and shut off in pond,
Shut off efficiency of the sewage intercepting pump to pollutant in dry days sewage and initial rainwater is improved, especially to including deposit and pollution
The efficiency of shutting off of load；
2) can ensure the prevention waterlogging safety during rainfall, it can be achieved that drainage reduction system rainy day overflow pollute and protect by
Receive water body water environment and Ecology.Porous permeable divider wall can clean or easily carry out the disassembly, cleaning and more of module on the spot
It changes；
3) overall system architecture is simple, easy to operate, and economic and practical is good, is suitable for built drainage system pump
The high efficiency of separate sewage system rainfall pumping station of hybrid junction of standing, have cuts dirty transformation, can be used for the transformation of existing drainage pumping plant,
To improve section dirty effect of dry flow sewage and initial rainwater, and then the quality of water environment for being conducive to receiving water body improves, and has very
Good economic results in society.
Description of the drawings
Fig. 1 is 1 planar structure schematic diagram of embodiment；
Fig. 2 is 1 cross-sectional view of embodiment；
Fig. 3 is the structural schematic diagram of porous permeable divider wall in embodiment 1；
Fig. 4 is the structural schematic diagram of porous permeable divider wall in embodiment 2；
Description of symbols in figure：
1-rainwater water inlet pipe, 2-water inlet slide valves, 3-inlet channels, 4-trash racks, 5-sewage shut off pond, 6-collection
Pond, 7-porous permeable divider walls, 8-sewage intercepting pumps, 9-rainwater pump.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figs. 1-3, a kind of interception type drainage pumping plant for adding porous permeable divider wall cuts dirty optimization system, the system
Collecting-tank 6 including open top, the upstream combined pipeline being connected with collecting-tank 6 or rainwater water inlet pipe 1, along water (flow) direction according to
The secondary inlet channel 3 being arranged in collecting-tank 6, trash rack 4, porous permeable divider wall 7 and training wall, porous permeable divider wall 7
It is equipped with a pair altogether, and is laid in collecting-tank 6 relatively, trash rack 4 encloses jointly with porous permeable divider wall 7, training wall to be set as
Open top and shut off pond 5 with the mutually independent embedded sewage of collecting-tank 6, collecting-tank 6 is divided in embedded sewage pond 5 of shutting off
Two mutually independent branch's collecting-tanks 6 are divided into, rain pump 9 is all provided in each branch's collecting-tank 6 and are connected with rainwater pump 9
Logical drainage pipeline networks, embedded sewage shut off the blowdown for being equipped with sewage intercepting pump 8 in pond 5 and being connected with sewage intercepting pump 8
Pipe network.Water inlet slide valve 2 is equipped between inlet channel 3 and upstream combined pipeline or rainwater water inlet pipe 1.Embedded sewage shuts off pond 5
Dischargeable capacity >=maximum one sewage intercepting pump, 8 five minutes water yields.
Wherein, porous permeable divider wall 7 is integral type porous permeable divider wall.The top mark height of porous permeable divider wall 7 with
Rainwater 9 termination of pumping lowest water levels of pump are equal, and bottom absolute altitude is equal with bottom absolute altitude in collecting-tank 6.The thickness of porous permeable divider wall 7 >=
400mm.Porous permeable divider wall 7 includes hollow platy wall and the permeable filler being uniformly filled in hollow platy wall,
The permeable filler is the fillers such as quartz sand, cobblestone, anthracite, zeolite, or the glass sphere manually prepared.
The present embodiment system shuts off to rain sewage dirty method, and key step is as follows：
The major function of fill is under normal circumstances (no to block) in porous permeable divider wall 7, and the filler of filling can
To intercept the deposit that sewage shuts off in pond 5, and collecting-tank 6 is not influenced and sewage shuts off the water level and drainage pumping plant in pond 5
Use function.8 dwell period of sewage intercepting pump, the sewage of drainage system flow into sewage through pipe network and shut off pond 5, deposit therein
Or bulky grain pollutant is intercepted at sewage and shuts off in pond 5 or between filler surface and its gap, the effect of similar filtering；Work as sewage
When dam pump 8 is run, it is accumulated in the sewage that sewage shuts off in pond 5 and is easier to aspirate retention by sewage intercepting pump with deposit；And
It intercepts on 7 surface of porous permeable divider wall and internal pollutant since the sewage stockpiled in sump is constantly reverses through porous
Permeable divider wall 7 is washed or springs back over sewage and shuts off pond 5, and then is aspirated and be discharged by sewage intercepting pump 8.This process week and
Back and forth, achieve the purpose that improving sewage intercepting pump 8 cuts dirty efficiency.
During rainfall, pipeline deposit is washed away by rain sewage into drainage pumping plant, is shut off rain sewage in pond 5 in sewage first
In water level less than before 7 top mark height of porous permeable divider wall, this part rain sewage can be discharged by sewage intercepting pump 8, in addition may be used
The case where intercepting larger pollutant with the filtration by porous permeable divider wall 7, being retained with dry days is similar.This part is dirty
The suction discharge of sewage intercepting pump 8 can efficiently be utilized by contaminating load；When the rainfall middle and later periods, when rainwater conflux amount increases, water level is continuous
After rising, the osmosis by the 7 top overflow of porous permeable divider wall and porous permeable divider wall 7 enters collecting-tank 6, this
The rain sewage relative clean of Shi Huiliu puts river when rainwater pump 9 is opened by rainwater pumping, is prevented waterlogging with support area safe.
After long-play, porous permeable divider wall 7 may block seriously, at this time can be by porous permeable divider wall 7
It is cleaned on the spot；Or lift out porous permeable divider wall 7 to come, carry out necessary cleaning；Or integral replacing is porous
Water segregation wall 7, to achieve the purpose that be continuing with.
During day-to-day operation, it is heavy that porous permeable divider wall 7 can prevent deposit from being formed in the larger area of collecting-tank 6
Product；When torrential rain arrives, initial rainwater and pipe network wash away remittance deposit or pollutant before rainwater pump 9 starts, still can be by
Sewage intercepting pump 8 shuts off to external sewage pipe, improves the pollutional load to shut off；While collecting-tank 6 is as a whole, as rainfall has
Depth is imitated to increase, it can be achieved that the quick outer row of rainwater, prevents waterlogging.
Embodiment 2：
In the present embodiment, porous permeable divider wall 7 is combined porous made of multiple contour divider wall Side by side groupings
Permeable divider wall.Seam profile in combined porous permeable divider wall 7 between adjacent two contour divider wall is using the embedding mouth of intersection
Or sheet rubber is closed, permeable filler is the fillers such as quartz sand, cobblestone, anthracite, zeolite, or the glass manually prepared
Sphere.The concrete structure of porous permeable divider wall 7 is as shown in Figure 4.
Remaining is the same as embodiment 1.
The quantity and number of units that are pumped above by reference to attached drawing, especially sewage pump, rainwater, the tectonic type of pumping plant and porous
The installation site of water segregation wall is only to illustrate a kind of signal pattern of embodiment, and those skilled in the art do not depart from the model of the present invention
It encloses and substantive, can be realized there are many variant scheme of the invention.For example, drainage pumping plant can be square bottom surface, also can be circle
Type bottom surface pumping plant.It these are only preferably feasible embodiment of the invention, not thereby limit to the interest field of the present invention, it is all
With equivalence changes made by description of the invention and accompanying drawing content, it is both contained within the interest field of the present invention.
Claims (10)
1. a kind of interception type drainage pumping plant for adding porous permeable divider wall cuts dirty optimization system, which is characterized in that the system packet
The collecting-tank (6) for including open top, the upstream combined pipeline being connected with collecting-tank (6) or rainwater water inlet pipe (1), along flow side
It is described to inlet channel (3), trash rack (4), porous permeable divider wall (7) and the training wall being successively set in collecting-tank (6)
Porous permeable divider wall (7) be equipped with a pair altogether, and it is opposite be laid in collecting-tank (6), the trash rack (4) with it is porous
Permeable divider wall (7), training wall enclose jointly to be set as open top and shuts off pond with the mutually independent embedded sewage of collecting-tank (6)
(5), collecting-tank (6) is separated into two mutually independent branch's collecting-tanks (6), Mei Gefen by embedded sewage pond (5) of shutting off
The drainage pipeline networks for being all provided with rain pump (9) in portion's collecting-tank (6) and being connected with rainwater pump (9), the embedded sewage
Shut off the blowdown pipe network for being equipped with sewage intercepting pump (8) in pond (5) and being connected with sewage intercepting pump (8).
2. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 1 cuts dirty optimization system,
It is characterized in that, being equipped with water inlet slide valve (2) between the inlet channel (3) and upstream combined pipeline or rainwater water inlet pipe (1).
3. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 1 cuts dirty optimization system,
It is characterized in that, the porous permeable divider wall (7) be integral type porous permeable divider wall or by multiple contour divider walls simultaneously
Arrange the combined porous permeable divider wall being composed.
4. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 3 cuts dirty optimization system,
It is characterized in that, the seam profile in the combined porous permeable divider wall (7) between adjacent two contour divider wall uses
Intersect embedding mouth or sheet rubber is closed.
5. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 3 cuts dirty optimization system,
It is characterized in that, the top mark height of the porous permeable divider wall (7) is equal with rainwater pump (9) termination of pumping lowest water level, bottom absolute altitude
It is equal with the interior bottom absolute altitude of collecting-tank (6).
6. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 3 cuts dirty optimization system,
It is characterized in that, thickness >=400mm of the porous permeable divider wall (7).
7. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 3 cuts dirty optimization system,
It is characterized in that, the porous permeable divider wall (7) includes hollow platy wall and is uniformly filled in hollow platy wall
In permeable filler.
8. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 7 cuts dirty optimization system,
It is characterized in that, the permeable filler include quartz sand, cobblestone, anthracite, zeolite or one kind in glass sphere or
It is several.
9. a kind of interception type drainage pumping plant for adding porous permeable divider wall according to claim 8 cuts dirty optimization system,
It is characterized in that, the permeable filler is glass sphere, the grain size of the glass sphere is 4-12mm.
10. cutting dirt according to a kind of interception type drainage pumping plant for adding porous permeable divider wall of claim 1 to 9 any one of them
Optimization system, which is characterized in that the embedded sewage shuts off one sewage intercepting pump of dischargeable capacity >=maximum in pond (5)
(8) water yield of 5min.
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| CN108468374A (en) * | 2018-06-07 | 2018-08-31 | 佛山市肯富来工业泵有限公司 | Mobile integrated pumping plant |
| BE1026473B1 (en) * | 2018-06-28 | 2020-02-13 | M H C N V | Rainwater tank |
| CN110424525A (en) * | 2019-07-20 | 2019-11-08 | 北京通成达水务建设有限公司 | One kind is controlled flood and drained flooded fields pump works |
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