CN107288198A - A kind of Rain Garden system for protecting bottom denitrification anaerobic area - Google Patents
A kind of Rain Garden system for protecting bottom denitrification anaerobic area Download PDFInfo
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- CN107288198A CN107288198A CN201710499078.6A CN201710499078A CN107288198A CN 107288198 A CN107288198 A CN 107288198A CN 201710499078 A CN201710499078 A CN 201710499078A CN 107288198 A CN107288198 A CN 107288198A
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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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
-
- 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
- E03F5/102—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins using already existing parts of the sewer system for runoff-regulation
-
- 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
- E03F5/103—Naturals or landscape retention bodies, e.g. ponds
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention discloses a kind of Rain Garden system for protecting bottom denitrification anaerobic area, including preposition pond, preposition pond includes decanting zone, transition region, decanting zone bottom is provided with sludge pump, sludge pump is connected with pressure spoil disposal pipeline, decanting zone is connected by filtrate area with transition region, transition region is connected by preposition pond discharge pipe with rainwater stagnant area, the first water reserve is sequentially provided with rainwater stagnant area, soil horizon, grit layer and compound reverse osmosis layer, collector pipe is provided with gravel layer, rainwater stagnant area is externally provided with outside pond body, outside pond body is provided with the second water reserve, first water reserve is provided with the 4th overflow pipe, rainwater is entered in outside pond body by the 4th overflow pipe overflow, the second overflow pipe is provided with outside pond body, the rainwater of overflow is drained into municipal wastewater pipe network.The present invention is rational in infrastructure, collects the rainwash rainwater in cell and carries out advanced treating to it, can not only lift its flood detention effect but also can realize the reinforcing to the control of runoff rainwater pollution.
Description
Technical field
The present invention relates to the Rain Garden system that can protect bottom denitrification anaerobic area, belong to urban ecology field.
Background technology
In recent years, the environmental problem of China was received more and more attention, and Ecological Civilization Construction also turns into China Xincheng District
The important guiding principle built with residential quarter, a large amount of due to concrete and bituminous paving are used, and ground impermeability is sharply increased,
Urban waterlogging problem has had a strong impact on the normal life and trip of China resident caused by, is national life and wealth
Production safety has buried hidden trouble.In order to solve this problem, China is successively putting into effect multinomial relevant policies and rule in recent years
It is fixed, greatly develop the construction in sponge city.
In the construction of Xincheng District, the collection and advanced treating for runoff rainwater are particularly important, and in Rain Garden system
In system, the key facility that collection and processing effect are played for rainwater is exactly biological delay facility.For traditional biological delaying basin
For, traditional is detained pool structure because a large amount of evaporations of bottom pore water under prolonged drought, causes bottom anaerobic environment incident
Destruction being arrived, denitrification is inhibited, and modified technique is investigated after this --- underdrain pipe, which is set, to be flooded
Area, makes problem obtain interim solution, but the flooding area also simply can just be deposited during the rainwater infiltration of single rainfall
, a rainfall terminates, rainwater all processing rack up after, flooding area remains static again, equally can under prolonged drought
There is the problem of moisture largely evaporates, it is impossible to which the anaerobic environment of long-term holding bottom, this can cut down the scavenging effect of delaying basin again.
Such as patent (application number：201420025661.5)：Nitrogen removal effect is biological stagnant in a kind of enhancing storm runoff
Pond is stayed, the patent idea is novel, but the also simply ability normal operation during single rainfall of anti-filter therein backflow annex, do
The lasting water outlet of collector pipe can not be ensured under non-irrigated state so that bottom produces slough, influence the effluent quality of rainfall next time.
And the rainwater that the present apparatus can be very good to solve in this problem, the second water reserve can be during a drought by reverse osmosis effect pair
The anaerobic environment of stagnant area bottom is protected, while ensureing the lasting water outlet of collector pipe, whole reverse osmosis process relies on Natural Water
The difference in height of position is carried out automatically, and without manual intervention also without outside extra power facility, energy-conserving and environment-protective are being enhanced
Retention capacity is also increased while dirty effect, there is positive directive significance for the construction of new cell.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention, which provides one kind, can protect bottom denitrification
The Rain Garden system of anaerobic zone, it is rational in infrastructure, collect the rainwash rainwater in cell and advanced treating is carried out to it, both
Its flood detention effect can be lifted can realize the reinforcing controlled runoff rainwater pollution again.
Technical scheme：In order to solve the above technical problems, a kind of rainwater for protecting bottom denitrification anaerobic area of the present invention
Garden system, including preposition pond, preposition pond include decanting zone, transition region, the decanting zone with and municipal administration Storm Sewer Network be connected
Water inlet pipe connection, decanting zone bottom is provided with sludge pump, and sludge pump is connected with pressure spoil disposal pipeline, decanting zone by filtrate area and
Transition region is connected, and transition region is connected by preposition pond discharge pipe with rainwater stagnant area, and first is sequentially provided with rainwater stagnant area
Collector pipe is provided with water reserve, soil horizon, grit layer, gravel layer and compound reverse osmosis layer, gravel layer, rainwater stagnant area is externally provided with outer
Portion's pond body, outside pond body is provided with the second water reserve, and the first water reserve is provided with the 4th overflow pipe, and rainwater passes through the 4th overflow pipe overflow
The second water reserve entered in outside pond body, is provided with the second overflow pipe in outside pond body, the rainwater of overflow is drained into municipal administration
In sewage network.
Preferably, the outside pond body is circle, rainwater stagnant area includes stagnant before four delay units, respectively two
It is detained unit after staying unit and two, each unit that is detained is sector, and each unit that is detained is followed successively by the first retaining from top to bottom
Collector pipe, preposition pond discharge pipe and two are equipped with area, soil horizon, grit floor, gravel layer and compound reverse osmosis floor, each gravel layer
It is detained delay unit after the first water reserve connection of unit, two before individual to connect with preceding delay unit by the 3rd overflow pipe, the
Four overflow pipes are detained on unit after being located at.
Preferably, the tube top absolute altitude of preposition pond discharge pipe must not be higher than the ttom of pipe absolute altitude of preposition pond water inlet pipe, it is described heavy
Drop area and be provided with the first overflow pipe, the ttom of pipe absolute altitude of the first overflow pipe will be higher by preposition pond discharge pipe tube top absolute altitude at least 100mm；Before
The bottom in pond is put in slope setting of inclining, it is the minimum absolute altitude inside preposition pond that sludge pump, which installs the elevation of bottom at place, to ensure water inlet
The smooth collection of middle particulate matter, mud etc.；Filtrate area is detachable filtrate, and outside is general frame, the filtrate of inside installing
It is made up of three-layer filter, from left to right respectively gravel layer, sand filter blanket and gravel layer.
Preferably, the compound reverse osmosis layer use is degradable for 0.071-0.075m/d composite inorganic by infiltration rate
Material is made, and the infiltration rate of soil horizon is 0.500-0.55m/d, about 7 times of reverse osmosis layer, to ensure in the first water reserve
Water only maintained 1 day by the flow event of soil horizon, and the water in the second water reserve passes through the process of compound reverse osmosis layer reverse osmosis
It can maintain 7 days or so, so as to ensure the normal operation of the system.
Preferably, being detained the plant of plantation in the soil horizon of unit before described for the good emergent aquactic plant of ability of inundation (such as：
Narrow leaf cattail etc.), the rear plant for being detained plantation in the soil horizon of unit for the good herbaceous plant of drought tolerance (such as：Toad's-mouth etc.),
So that system has good adaptivity for the rainfall of varying strength, it is ensured that system is equal under different rainfall size cases
Can normal operation.
It is detained the first water reserve of unit preferably, being detained before described after the water reserve highest depth of water of unit is at least above
Highest depth of water 100mm, the setting of four remaining physical heights of area is mutually identical；The peak level of second water reserve is less than stagnant
Stay the peak level 150mm in three, four areas or so；The overflow height of the second water reserve is flooded height than collector pipe and is higher by simultaneously
More than 500mm, to ensure the normal operation of system.
Preferably, annular air pipeline is provided with second water reserve, annular air pipeline and air pressurized equipment
Connection, the second water reserve is provided with clear water pipeline.
Preferably, the annular air pipeline includes outer ring pipeline and inner ring pipeline, inner ring pipeline leads to outer ring pipeline
The connection of Internal and external cycle connecting tube is crossed, is uniformly provided with several vent ports, inside and outside two circle and sets on outer ring pipeline and inner ring pipeline
The perforate direction for the vent ports put is straight down and is evenly arranged on inside and outside two circles, to ensure the uniform of system gas distribution
Property.
In the present invention, during rainfall, rainwater is tentatively filtered by the filtrate area in preposition pond, passes through preposition pond discharge pipe afterwards
Into the stagnant area of Rain Garden main body, wherein discharge pipe level after Rain Garden is entered be divided into two branch pipes be connected into respectively it is stagnant
Stay an area and be detained 2nd area, rainwater is detained unit enter by discharge pipe simultaneously before, be detained before treating after unit full water, just pass through
Two group of the 3rd overflow pipe is detained unit enter simultaneously after, when after be detained unit full water after, rainwater will be overflowed by two groups the
Flow tube enters the second water reserve of Rain Garden, after the second water reserve stores completely, and the rainwater having more just passes through the second overflow pipe and arranged
Go out Rain Garden system, be discharged into municipal wastewater pipe network.
In the present invention, it is described to change water desilting equipment to be manually turned on and off, needed before unlatching pre- with reference to local weather
Report is estimated, if the time interval of front and rear two rainfalls is within 14d, to prevent the excessively heavy of the second water reserve bottom sludge
Product, (i.e. clear water pipeline and air pressurized equipment should at least be fully opened once every month in period of drought by changing water desilting equipment
Open simultaneously)；If rain time interval is more than 14d, fully opens this equipment once within every seven days or so, the second water reserve is entered
Row changes water desilting, and the water to ensure this part will not stop the long time and become stagnant water after reverse osmosis is terminated, and protect simultaneously
The anaerobic environment of rainwater stagnant area bottom is not damaged, and maintains stagnant area to handle the stability of rainwater.
In the present invention, the top of Rain Garden is to view and admire region, including visitor pavement and safety barrier, wherein people's row
Road is set by Rain Garden body shape, and pavement is designed for two-way street, and width is more than 2m, can be according to the ground for setting cell
Reason situation specifically considers；Safety barrier is highly 1.2m or so, to ensure the personal safety of visitor.
Beneficial effect：The Rain Garden system for protecting bottom denitrification anaerobic area of the present invention, the ladder of four stagnant areas
Degree water intake mode causes Rain Garden to be suitable for the rainfall of varying strength, and it is overall that increased second water reserve can increase Rain Garden
Reservoir storage, improve the retention capacity of Rain Garden；Simultaneously as soil horizon and compound reverse osmosis layer porosity difference are larger,
So that the water in the second water reserve still can continue up reverse osmosis in the dry spell, and maintain the reverse osmosis process of 7 days or so；It is some
The non-irrigated time, more than 14 days, is changed into stagnant water, the present invention to avoid the second remaining rainwater in water reserve bottom from being detained due to long-time
It is provided with again and changes water desilting equipment and periodically artificial running, to ensure regularly updating for the water in the second water reserve, while
It can prevent bed mud from depositing and influenceing the stability of system operation；, can be large-scale from the point of view of eco-friendly angle
Among the construction of Urban Ecological Residential Communities, with it is compatible good the characteristics of.
Brief description of the drawings
Fig. 1 is the facade structures front view in preposition pond of the invention.
Fig. 2 is the horizontal layout schematic diagram in preposition pond of the invention.
Fig. 3 is the facade structures left view in preposition pond of the invention.
Fig. 4 is the facade structures schematic diagram of Rain Garden main body of the present invention.
Fig. 5 is the top plan view of Rain Garden main body of the present invention.
Fig. 6 is the A-A section profiles of Rain Garden main body of the present invention.
Fig. 7 is the B-B section profiles of Rain Garden main body of the present invention.
Fig. 8 is the facade elevation arrangement figure of the present invention.
Fig. 9 is the horizontal layout schematic diagram of the present invention.
Reference：1- water inlet pipes, the overflow pipes of 2- first, the preposition pond decanting zones of 3-, 4- sludge pumps, the preposition Chi Lvliaoqu of 5-
(5.1- gravel layers, 5.2- sand filter blankets), the preposition pond transition regions of 6-, 7- pressure spoil disposals pipeline, the preposition pond discharge pipes of 8-, 9- second overflow
Flow tube, the water reserves of 10- second, 11- safety barriers, 12- soil horizons, 13- are combined reverse osmosis layer, the overflow pipes of 14- the 3rd, 15- the 4th
Overflow pipe, 16- annular airs pipeline (16.1- outer rings pipeline, 16.2- inner rings pipeline, 16.3- Internal and external cycles connecting tube, 16.4- rows
Gas opening), 17- air pressurizeds equipment, 18- clear water pipelines, 19- collector pipes (19.1- collector pipes gully-hole), 20- pavements,
The water reserves of 21- first, 22- stagnant areas grit layer, 23- stagnant areas gravel layer, 24- rainwater stagnant area.
Embodiment
As shown in Figures 1 to 9, a kind of Rain Garden system for protecting bottom denitrification anaerobic area of the invention, including
Preposition pond, preposition pond includes decanting zone 3, transition region 6, the decanting zone 3 with and the water inlet pipe 1 that is connected of municipal administration Storm Sewer Network connect
Connect, the bottom of decanting zone 3 is provided with sludge pump 4, sludge pump 4 is connected with pressure spoil disposal pipeline 7, and decanting zone 3 passes through filtrate area 5 and transition
Area 6 is connected, and transition region 6 is connected by preposition pond discharge pipe 8 with rainwater stagnant area, and the first storage is sequentially provided with rainwater stagnant area
Collector pipe 19 is provided with pool 21, soil horizon 12, grit layer 22, gravel layer 23 and compound reverse osmosis layer 13, gravel layer 23, rainwater is stagnant
Area is stayed to be externally provided with outside pond body, outside pond body is provided with the second water reserve 10, and the first water reserve 21 is provided with the 4th overflow pipe 15, rainwater
The second water reserve 10 entered by the overflow of the 4th overflow pipe 15 in outside pond body, the second overflow pipe 9 is provided with outside pond body,
The rainwater of overflow is drained into municipal wastewater pipe network.
In the present invention, the outside pond body is circle, rainwater stagnant area 24 comprising four be detained units 24.1,24.2,
24.3rd, 24.4, it is detained after unit 24.1,24.2 and two before respectively two and is detained unit 24.3,24.4, is each detained unit
For sector, each unit that is detained is followed successively by the first water reserve 21.1 or 21.2 or 21.3 or 21.4, soil horizon 12, sand from top to bottom
Collector pipe 19, preposition pond discharge pipe 8 and two are equipped with gravel bed 22, gravel layer 23 and compound reverse osmosis layer 13, each gravel layer 23
It is detained delay unit 24.3,24.4 after the first water reserve connection of unit 24.1,24.2, two before individual and passes through the 3rd overflow pipe 14
Connected with preceding delay unit 24.1,24.2, the 4th overflow pipe 15 is detained on unit 24.3,24.4 after being located at.
In the present invention, the tube top absolute altitude of preposition pond discharge pipe 8 must not be higher than the ttom of pipe absolute altitude of preposition pond water inlet pipe 1, institute
Decanting zone 3 is stated provided with the first overflow pipe 2, the ttom of pipe absolute altitude of the first overflow pipe 2 will be higher by the preposition tube top absolute altitude of pond discharge pipe 8 at least
100mm；The bottom in preposition pond is in slope setting of inclining, and it is the minimum absolute altitude inside preposition pond that sludge pump, which installs the elevation of bottom at place, with
Ensure the smooth collection of particulate matter, mud etc. in water inlet；Filtrate area 5 is detachable filtrate, and outside is general frame, inside dress
If filtrate be made up of three-layer filter, respectively gravel layer 5.1, sand filter blanket 5.2 and gravel layer 5.1 from left to right.
In the present invention, the compound reverse osmosis layer 13 uses porosity very little (infiltration rate is 0.071-0.075m/d)
Composite inorganic degradation material is made, and the porosity (infiltration rate is 0.500-0.55m/d) of soil horizon 12 will be significantly greater than
The porosity of compound reverse osmosis layer 13.It is detained the plant of plantation in the soil horizon 12 of unit before described to plant for the good very water of ability of inundation
Thing is (such as：Narrow leaf cattail etc.), the rear plant for being detained plantation in the soil horizon 12 of unit for the good herbaceous plant of drought tolerance (such as：Gold
Water shield etc.), to ensure that system can normal operation under different rainfall size cases.
In the present invention, the first water reserve highest depth of water of the preceding delay unit 24.1,24.2 is detained after being at least above
First water reserve highest depth of water 100mm of unit 24.3,24.4, the setting of four remaining physical heights of area is mutually identical；
The peak level of second water reserve 10 is detained peak level 150mm of unit 24.3,24.4 or so after being less than；Second retaining simultaneously
The overflow height in area 10 floods height than collector pipe 19 and is higher by more than 500mm, to ensure the normal operation of system.
In the present invention, annular air pipeline 16, annular air pipeline 16 and air are provided with second water reserve 10
Pressurized equipment 17 is connected, and the second water reserve 10 is provided with clear water pipeline 18.The annular air pipeline 16 includes outer ring pipeline
16.1 and inner ring pipeline 16.2, inner ring pipeline 16.2 is connected with outer ring pipeline 16.1 by Internal and external cycle connecting tube 16.3, in outer ring
The vent ports set on several vent ports 16.4, inside and outside two circle are uniformly provided with pipeline 16.1 and inner ring pipeline 16.2
16.4 perforate direction is straight down and is evenly arranged on inside and outside two circles, to ensure the uniformity of system gas distribution.
The system includes two kinds of different operating modes, respectively operating condition and safeguards operating mode.
Under operating condition, the rainwash rainwater that municipal Storm Sewer Network is collected enters the sedimentation in preposition pond by water inlet pipe 1
Area 3, enters preposition pond transition region 6 behind preposition pond filtrate area 5 tentatively filtering, and entering rainwater simultaneously by discharge pipe 8 afterwards spends
The rainwater in garden is detained an area and rainwater is detained 2nd area.In small rainfall, rainwater, which can only store, to be detained an area and is being detained 2nd area；Heavy rain
During amount, rainwater can first fill one area of delay and be detained 2nd area, entered by two groups of overflows of the 3rd overflow pipe 14 be detained 3rd area afterwards
Be detained 4th area, treat after all full waters of four rainwater stagnant areas, the rainwater having more can just be entered by two group of the 4th overflow pipe 15
Second water reserve 10, if after the full water of the second water reserve 10, rainwater is then directly discharged into municipal wastewater pipe by the second overflow pipe 9
Net.
Rainwater in first water reserve 21 under gravity, is slowly oozed down and by the row of collector pipe 19 by soil horizon 12
Go out Rain Garden system, this process duration is about 1 day；Rainwater in second water reserve 10 leads under the effect of the water level discrepancy in elevation
13 reverse osmosis of compound reverse osmosis layer are crossed to stagnant area and by the discharge system of collector pipe 19, this process duration is 7 days or so.
Safeguard under operating mode, artificial open changes water desilting equipment, treats that the water level of the second water reserve 10 retracts the flooding area of collector pipe 19
During height, air pressurized equipment 17 is opened, the remaining water in the second water reserve 10 is aerated, while so that bottom precipitum exists
Suspend again under the washing away of gases at high pressure and highly mixed with remaining water, aeration time is about 10min, passes through clear water pipe afterwards
Road 18, which is injected into the second water reserve 10 in normal pressure clear water, the injecting process, to keep the unlatching of air pressurized equipment 17 to cause second
Water in water reserve 10 keeps height turbulent fluctuation state at any time, when water level rises to the overflow height of the 4th overflow pipe 9, continues to fill
Water about 20min so that the deposit in the second water reserve 10 afterwards, is closed all by the quick discharge system of the 4th overflow pipe 9
Close and change water desilting equipment.So far, the water in the second water reserve 10 has changed free of contamination clear water into, under inside and outside height of water level difference,
Start another reverse osmosis process, to keep stagnant area bottom anaerobic zone to be in the state flooded and flowed at any time.In addition, preposition
Detachable filtrate area 5 in pond should integrally be taken out when safeguarding under operating mode, and filtrate is rinsed or changed；It is simultaneously artificial
Sludge pump 4 is opened, by the bed mud discharge system deposited, to ensure the normal operation in preposition pond.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of Rain Garden system for protecting bottom denitrification anaerobic area, it is characterised in that：Including preposition pond, preposition Chi Bao
Containing decanting zone, transition region, the decanting zone with and the water inlet pipe that is connected of municipal Storm Sewer Network be connected, decanting zone bottom is provided with dirty
Dredge pump, sludge pump is connected with pressure spoil disposal pipeline, and decanting zone is connected by filtrate area with transition region, and transition region is arranged by preposition pond
Outlet pipe is connected with rainwater stagnant area, be sequentially provided with rainwater stagnant area the first water reserve, soil horizon, grit layer, gravel layer and
Collector pipe is provided with compound reverse osmosis layer, gravel layer, rainwater stagnant area is externally provided with outside pond body, and outside pond body is provided with the second retaining
Area, the first water reserve is provided with the 4th overflow pipe, and rainwater is entered in outside pond body by the 4th overflow pipe overflow, in outside pond body
Provided with the second overflow pipe, the rainwater of overflow is drained into municipal wastewater pipe network.
2. the Rain Garden system according to claim 1 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
Outside pond body is circular, and rainwater stagnant area, which includes to be detained after unit and two before four delay units, respectively two, is detained list
Member, each unit that is detained is sector, and each unit that is detained is followed successively by the first water reserve, soil horizon, grit layer, gravel from top to bottom
Layer and compound reverse osmosis layer, collector pipe, preposition pond discharge pipe and the first storage for being detained unit before two are equipped with each gravel layer
Pool is connected, and unit is detained after two and is connected by the 3rd overflow pipe with preceding delay unit, the 4th overflow pipe is detained single after being located at
In member.
3. the Rain Garden system according to claim 1 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
Decanting zone is provided with the first overflow pipe, and the ttom of pipe absolute altitude of the first overflow pipe will be higher by preposition pond discharge pipe tube top absolute altitude at least 100mm；
The bottom in preposition pond is in slope setting of inclining, and it is the minimum absolute altitude inside preposition pond that sludge pump, which installs the elevation of bottom at place,；Filtrate area is
Detachable filtrate, outside is general frame, and the filtrate of inside installing is made up of three-layer filter, from left to right respectively gravel
Layer, sand filter blanket and gravel layer.
4. the Rain Garden system according to claim 1 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
Compound reverse osmosis layer is made up of infiltration rate of 0.07-0.075m/d composite inorganic degradation material, and the infiltration speed of soil horizon
Rate is 0.5-0.55m/d.
5. the Rain Garden system according to claim 2 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
The preceding plant for being detained plantation in the soil horizon of unit is the good emergent aquactic plant of ability of inundation, is detained in the soil horizon of unit plants afterwards
Plant be the good herbaceous plant of drought tolerance.
6. the Rain Garden system according to claim 2 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
It is preceding to be detained after the first water reserve highest depth of water of unit is at least above the first water reserve highest depth of water 100mm for being detained unit, four
The setting of individual remaining physical height of area is mutually identical.
7. the Rain Garden system according to claim 1 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
Annular air pipeline is provided with second water reserve, annular air pipeline is connected with air pressurized equipment, and the second water reserve is provided with
Clear water pipeline.
8. the Rain Garden system according to claim 7 for protecting bottom denitrification anaerobic area, it is characterised in that：It is described
Annular air pipeline includes outer ring pipeline and inner ring pipeline, and inner ring pipeline is connected with outer ring pipeline by Internal and external cycle connecting tube,
Several vent ports are uniformly provided with outer ring pipeline and inner ring pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499078.6A CN107288198B (en) | 2017-06-27 | 2017-06-27 | A kind of Rain Garden system for protecting bottom denitrification anaerobic area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109250821A (en) * | 2018-11-19 | 2019-01-22 | 中国机械设备工程股份有限公司 | It is classified biofiltration gaseous-waste holdup system |
| CN109655600A (en) * | 2018-12-11 | 2019-04-19 | 内蒙古工业大学 | A kind of anaerophyte based on degradation nitrate nitrogen is detained first experimental provision |
| CN110438938A (en) * | 2019-08-13 | 2019-11-12 | 温州春桦秋时科技有限公司 | For constructing the river bunding structure in sponge city |
| CN110550674A (en) * | 2019-08-27 | 2019-12-10 | 首创爱华(天津)市政环境工程有限公司 | Treatment process for garden type sewage plant |
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