CN111115907A - Sponge urban rainwater treatment method - Google Patents
Sponge urban rainwater treatment method Download PDFInfo
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- CN111115907A CN111115907A CN202010064740.7A CN202010064740A CN111115907A CN 111115907 A CN111115907 A CN 111115907A CN 202010064740 A CN202010064740 A CN 202010064740A CN 111115907 A CN111115907 A CN 111115907A
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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
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
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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
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sewage (AREA)
Abstract
The invention relates to a sponge urban rainwater treatment method, which comprises rainwater collection, coagulation treatment, precipitation treatment, filtration treatment and disinfection treatment processes, wherein in the rainwater collection process, a rainwater diversion step is added, a collecting pipe is communicated with a diversion well, the diversion well separately collects initial rainwater and later rainwater, and the rainwater in different periods is treated in different purification modes. The invention has the advantages that the initial rainwater and the later rainwater are separately treated, different purification processes are adopted according to different impurity contents of the rainwater in different periods, the purification effect is better, the treatment cost is lower, and the economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of rainwater treatment, in particular to a sponge urban rainwater treatment method.
Background
Rainwater is a part of water resource circulation and is also a very precious water resource. The treated rainwater is used in cities, and is a method for solving the shortage of water resources.
With the rapid development of the urbanization process in China, the coverage rate of surface cement concrete in cities is very high, and urban waterlogging is easily formed when the water is not drained in time when short-term high-strength rainstorm occurs. If the rainwater can be collected, the waterlogging phenomenon can be greatly relieved.
The sponge city is a brand new city construction concept provided by the nation for solving the problems of urban waterlogging, non-point source pollution, serious damage to an urban water circulation system and the like, and the sponge city requires the city to have the functions of infiltration, stagnation, storage, purification, use and drainage on rainwater.
However, the initial rainwater and the later rainwater carry a large amount of pollution impurities, the later rainwater has high oxygen content and less impurities, and in the existing rainwater treatment method for the sponge city, the initial rainwater and the later rainwater are processed by the same rainwater treatment method and cannot be separately treated, so that the purification cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sponge urban rainwater treatment method capable of separately treating initial rainwater and later rainwater.
The above object of the present invention is achieved by the following technical solutions:
a sponge urban rainwater treatment method comprises the following steps:
s1, collecting rainwater; adopting a rainwater infiltration system, wherein the rainwater infiltration system comprises a water infiltration layer, a water collection layer and a collecting pipe, so that rainwater enters the water collection layer through the water infiltration layer on the surface of the urban road and then flows to the collecting pipe, and the collecting pipe collects the rainwater;
s2, coagulation treatment; the collecting pipe sends the collected rainwater into a flocculation tank, and a coagulant is added and then stirred to enable impurities in the rainwater to form floccules;
s3, carrying out precipitation treatment; placing the flocculated rainwater to enable floccules and partial impurities in the rainwater to be deposited under the action of gravity;
s4, filtering; conveying and filtering the settled rainwater to obtain relatively clear rainwater;
s5, sterilizing; sterilizing the clarified rainwater according to the use environment;
wherein the rainwater is collected the in-process, increases the rainwater reposition of redundant personnel step, makes the collecting pipe intercommunication reposition of redundant personnel well, makes the reposition of redundant personnel well separately collect initial stage rainwater and later stage rainwater, adopts different purification methods to handle the rainwater in different periods.
Through adopting above-mentioned technical scheme, make initial stage rainwater and later stage rainwater separately handle, according to the difference of different periods rainwater impurity content, adopt different purification technology, purifying effect is better, and the treatment cost is lower, improves economic benefits.
The present invention in a preferred example may be further configured to: the shunt well is arranged at the downstream of the collecting pipe and communicated with the shunt pipes, a drain valve is arranged at one end of each shunt pipe communicated with the shunt well, and the drain valve is communicated with a water valve control system.
Through adopting above-mentioned technical scheme, make water valve control system can adjust opening and closing of shunt tubes drain valve according to precipitation and precipitation time, and then control collects the earlier stage rainwater of different periods.
The present invention in a preferred example may be further configured to: the water valve control system comprises a driving motor for driving the drain valve to rotate and a plc controller for controlling the driving motor to rotate, the water valve control system further comprises a rainfall detector, and when the rainfall detector detects that the current rainfall reaches a preset value, the plc controller controls the driving motor to drive the drain valve to start working, so that the corresponding shunt pipe is communicated with the diversion well.
Through adopting above-mentioned technical scheme, according to the distance of sump pit and collector pipe, judge that the precipitation reaches a certain numerical value after, belong to the more earlier stage rainwater of impurity or the less later stage rainwater of impurity in the sump pit, the staff sets for the precipitation numerical value in advance, and the rainfall detector feeds back the data that detect to the plc controller in real time, and the plc controller judges to reach the setting value after the control drain valve opens.
The present invention in a preferred example may be further configured to: the water collecting layer is provided with a plurality of communicated water collecting channels, one ends of the water collecting channels are communicated with the collecting pipe, the other ends of the water collecting channels are communicated with the vent pipe, one end of the vent pipe, back to the water collecting channels, is communicated with the vent hole, and the vent hole is communicated with the air pump.
By adopting the technical scheme, when the water collection layer and the collecting pipe are blocked seriously, a worker applies pressure to the water collection layer and the collecting pipe by opening the air pump communicated with the air vent, and the air blows off part of impurities along the collecting pipe to play a role in dredging the pipeline; simultaneously in humid weather or not rainy weather, blow away the interior remaining rainwater of catchment layer and collecting pipe through the air pump, make its rapid draing, make the microorganism be difficult for breeding in the pipeline, reduce the treatment cost among the later stage rainwater processing, and simultaneously, the staff can add likepowder antibacterial substance to the breather pipe through vent department, exert pressure through the vent and blow likepowder thing to the water seepage layer, in catchment layer and the return-flow pipe, prevent breeding of bacterium in the pipeline, influence people's is healthy.
The present invention in a preferred example may be further configured to: and plugging plates are arranged at the positions of the collecting pipe and the water collecting well.
Through adopting above-mentioned technical scheme, make the staff with the closure plate closed back, after letting in gas in the vent hole, the atmospheric pressure in the catchment passageway rises, in the difficult infiltration layer of following of water gets into the catchment passageway of water body, when the staff is to the surface cleaning of infiltration layer, rivers are difficult to infiltrate the infiltration layer, and it is more convenient to wash.
The present invention in a preferred example may be further configured to: breather pipe and collecting pipe are located catchment layer both sides respectively, and the slope of catchment layer sets up, and the one end that the catchment layer is close to the collecting pipe is lower.
By adopting the technical scheme, because the water collection layer is obliquely arranged, when rainwater is collected again, the rainwater flows to the collecting pipe along the obliquely arranged water collection layer, and the rainwater is not easy to be kept in the water collection layer.
The present invention in a preferred example may be further configured to: the water collecting channel close to the collecting pipe is narrow.
Through adopting above-mentioned technical scheme, make water pressure and air flow rate that is close to collector pipe department great, impurity is difficult for piling up, makes things convenient for the rainwater to flow out.
The present invention in a preferred example may be further configured to: the water collecting channel comprises a plurality of arc-shaped channels which are communicated with each other.
Through adopting above-mentioned technical scheme, the area of contact of extension catchment passageway and infiltration layer improves the rainwater and collects the effect.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the initial rainwater and the later rainwater are separately treated, different purification processes are adopted according to different rainwater impurity contents in different periods, the purification effect is better, the treatment cost is lower, and the economic benefit is improved;
2. when the water collection layer and the collecting pipe are seriously blocked, a worker applies pressure to the water-supplying layer and the water flow pipe by opening the air pump communicated with the air vent, and the air blows off part of impurities along the collecting pipe to play a role in dredging the pipeline; simultaneously in humid weather or not rainy weather, blow away the interior remaining rainwater of catchment layer and collecting pipe through the air pump, make its rapid draing, make the microorganism be difficult for breeding in the pipeline, reduce the treatment cost among the later stage rainwater processing, and simultaneously, the staff can add likepowder antibacterial substance to the breather pipe through vent department, exert pressure through the vent and blow likepowder thing to the water seepage layer, in catchment layer and the return-flow pipe, be used for preventing breeding of bacterium in the pipeline, influence people's is healthy.
Drawings
FIG. 1 is a schematic flow diagram of a sponge city rainwater treatment method.
Fig. 2 is a schematic diagram of the overall structure of the invention.
Fig. 3 is a schematic diagram of the overall structure of the present invention.
Fig. 4 is a schematic view showing the structure of the water discharge valve in the present invention.
In the figure, 1, a water seepage layer; 2. a water catchment layer; 3. a collector pipe; 4. a diversion well; 5. a shunt tube; 6. a drain valve; 7. a water catchment channel; 8. a breather pipe; 9. a vent; 10. a plugging plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As can be seen from fig. 1 and 2, the sponge urban rainwater treatment method disclosed by the invention comprises rainwater collection, coagulation treatment, precipitation treatment, filtration treatment and disinfection treatment.
S1, collecting rainwater; a rainwater infiltration system is adopted, wherein the rainwater infiltration system comprises a water infiltration layer 1, a water collection layer 2 and a collecting pipe 3, so that rainwater enters the water collection layer 2 through the water infiltration layer 1 on the surface of the urban road and then flows to the collecting pipe 3, and the collecting pipe 3 collects the rainwater;
s2, coagulation treatment; the collecting pipe 3 sends the collected rainwater into a flocculation tank, and a coagulant is added and then stirred to enable impurities in the rainwater to form floccules;
s3, carrying out precipitation treatment; placing the flocculated rainwater to enable floccules and partial impurities in the rainwater to be deposited under the action of gravity;
s4, filtering; conveying and filtering the settled rainwater to obtain relatively clear rainwater;
s5, sterilizing; and (4) sterilizing the clarified rainwater according to the using environment of the rainwater.
As shown in fig. 2, in the rainwater collection process, a rainwater distribution step is added to enable the collecting pipe 3 to be communicated with the distribution well 4, the distribution well 4 separately collects initial rainwater and later rainwater, and different purification modes are adopted for treating rainwater in different periods.
As shown in fig. 3, the water catchment layer 2 is provided with a plurality of communicated water catchment channels 7, and the water catchment channels 7 comprise a plurality of arc-shaped channels which are communicated with each other; one end of the water collection channel 7 is communicated with the collecting pipe 3, the other end of the water collection channel is communicated with a vent pipe 8, the vent pipe 8 and the collecting pipe 3 are respectively positioned at two sides of a road, one end of the vent pipe 8, which is back to the water collection channel 7, is communicated with a vent hole 9, the vent hole 9 is communicated with an air pump or a movable pump station, the air pump or the movable pump station is not shown in the figure, and a worker can add powdery bacteriostatic substances into the water collection channel 7 and the collecting pipe 3 through the vent pipe 8 to perform disinfection; plugging plates 10 are arranged at the positions of the collecting pipe 3 and the water collecting well; the air pipe 8 and the collecting pipe 3 are respectively positioned at two sides of the water collecting layer 2, the water collecting layer 2 is obliquely arranged, and one end of the water collecting layer 2 close to the collecting pipe 3 is lower; the catchment channel 7 near the catchment layer 2 is narrower.
As can be seen from fig. 3 and 4, the shunt well 4 is disposed at the downstream of the collecting pipe 3, the shunt well 4 is communicated with the plurality of shunt pipes 5, a drain valve 6 is disposed at one end of each shunt pipe 5, which is communicated with the shunt well 4, and the drain valve 6 is communicated with the water valve control system.
The water valve control system comprises a driving motor for driving the drain valve 6 to rotate and a plc controller for controlling the driving motor to rotate, and the water valve control system further comprises a rainfall detector electrically connected with the plc control system.
The implementation principle of the embodiment is as follows:
when the area begins to fall, rainwater falls into the surface seepage layer 1, the rainwater is gathered on the water collection layer 2 through the seepage effect of the surface seepage layer 1, the rainwater flows to the collecting pipe 3 due to the inclined arrangement of the water collection layer 2 and then flows into the diversion well, and when the rainfall detector detects that the current rainfall reaches a preset value, the plc controller controls the driving motor to drive the drainage valve 6 to start working, so that the corresponding diversion pipe 5 is communicated with the diversion well; the preset value is data of early stage rainwater with more impurities or later stage rainwater with less impurities in the water collecting well when the precipitation amount is judged to reach a certain value by a worker according to the distance between the water collecting well and the collecting pipe 3, the worker sets the precipitation amount value in advance, the rainfall amount detector feeds detected data back to the plc controller in real time, and the plc controller controls the drainage valve 6 to be opened after judging that the set value is reached.
After precipitation stops, the staff closes the shutoff pipe, then adopt the air pump to ventilate in the breather pipe 8, detach the partial moisture in catchment passageway 7 on the one hand, especially the conglobate rainwater of leaving over, prevent breeding of bacterium, on the other hand makes gas blow away partial impurity along the interior blowoff of collector pipe 3 through the mode that increases the pressure in catchment passageway 7 with the impurity in catchment passageway 7 and partial infiltration layer 1 clearance, add likepowder antibacterial material in the breather pipe 8 through blow vent 9 department, it blows likepowder to infiltration layer 1, catchment layer 2 and in the return-flow tube to pressurize through blow vent 9.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A sponge urban rainwater treatment method comprises the following steps:
s1, collecting rainwater; a rainwater infiltration system is adopted, wherein the rainwater infiltration system comprises a water infiltration layer (1), a water collection layer (2) and a collecting pipe (3), so that rainwater enters the water collection layer (2) through the water infiltration layer (1) on the surface of the urban road and then flows to the collecting pipe (3), and the collecting pipe (3) collects the rainwater;
s2, coagulation treatment; the collecting pipe (3) sends the collected rainwater into a flocculation tank, and a coagulant is added and then stirred to enable impurities in the rainwater to form floccules;
s3, carrying out precipitation treatment; placing the flocculated rainwater to enable floccules and partial impurities in the rainwater to be deposited under the action of gravity;
s4, filtering; conveying and filtering the settled rainwater to obtain relatively clear rainwater;
s5, sterilizing; sterilizing the clarified rainwater according to the use environment;
wherein the rainwater is collected the in-process, increases the rainwater reposition of redundant personnel step, makes collector pipe (3) intercommunication reposition of redundant personnel well (4), makes reposition of redundant personnel well (4) separately collect initial stage rainwater and later stage rainwater, adopts different purification methods to handle the rainwater in different periods.
2. The method for treating rainwater in the sponge city according to claim 1, which is characterized in that: shunt tubes (4) set up in the low reaches of collecting pipe (3), and shunt tubes (5) are connected in shunt tubes (4), one end in shunt tubes (5) intercommunication shunt tubes (4) is equipped with drain valve (6), drain valve (6) intercommunication water valve control system.
3. The method for treating rainwater in the sponge city according to claim 2, which is characterized in that: the water valve control system comprises a driving motor for driving the drain valve (6) to rotate and a plc controller for controlling the driving motor to rotate, the water valve control system further comprises a rainfall detector, and when the rainfall detector detects that the current rainfall reaches a preset value, the plc controller controls the driving motor to drive the drain valve (6) to start working, so that the corresponding shunt pipe (5) is communicated with the shunt well.
4. The method for treating rainwater in the sponge city according to claim 1, which is characterized in that: the water collection layer (2) is provided with a plurality of communicated water collection channels (7), one end of each water collection channel (7) is communicated with the collection pipe (3), the other end of each water collection channel is communicated with a vent pipe (8), one end of each vent pipe (8) back to the water collection channel (7) is communicated with a vent hole (9), and the vent holes (9) are communicated with an air pump.
5. The method for treating rainwater in sponge city according to claim 4, characterized in that: and plugging plates (10) are arranged at the positions of the collecting pipe (3) and the water collecting well.
6. The method for treating rainwater in the sponge city according to claim 5, wherein the method comprises the following steps: breather pipe (8) and collecting pipe (3) are located water catchment layer (2) both sides respectively, and water catchment layer (2) slope sets up, and water catchment layer (2) are close to the one end of collecting pipe (3) and are lower.
7. The method for treating rainwater in the sponge city according to claim 1, which is characterized in that: the water collecting channel (7) close to the collecting pipe (3) is narrow.
8. The method for treating rainwater in the sponge city according to claim 1, which is characterized in that: the water collecting channel (7) comprises a plurality of arc-shaped channels which are communicated with each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010064740.7A CN111115907B (en) | 2020-01-20 | 2020-01-20 | Sponge urban rainwater treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010064740.7A CN111115907B (en) | 2020-01-20 | 2020-01-20 | Sponge urban rainwater treatment method |
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| CN111115907A true CN111115907A (en) | 2020-05-08 |
| CN111115907B CN111115907B (en) | 2022-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227456A (en) * | 2020-09-29 | 2021-01-15 | 郑小宇 | Rainwater recovery unit that high-efficient development of water resource was utilized |
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| GB0526266D0 (en) * | 2005-12-22 | 2006-02-01 | George Robert | Apparatus for providing seamless fluid supply from multiple sources |
| CN102021930A (en) * | 2009-09-17 | 2011-04-20 | 储贻斌 | Automatic rainwater collecting distribution station |
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| CN205935042U (en) * | 2016-08-22 | 2017-02-08 | 河南省建筑科学研究院有限公司 | Sponge urban rainwater processing system |
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| CN207581602U (en) * | 2017-11-21 | 2018-07-06 | 浙江达人环保科技股份有限公司 | Anticlogging rainwater ecological purification utilization system |
| CN209620217U (en) * | 2019-01-14 | 2019-11-12 | 湖南意风环保科技有限公司 | A kind of anticlogging Building class drainpipe |
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2020
- 2020-01-20 CN CN202010064740.7A patent/CN111115907B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324656A (en) * | 1978-10-24 | 1982-04-13 | Godar Serge E | Installation for the withdrawal and purification treatment of waters and aqueous effluents |
| GB0526266D0 (en) * | 2005-12-22 | 2006-02-01 | George Robert | Apparatus for providing seamless fluid supply from multiple sources |
| CN102021930A (en) * | 2009-09-17 | 2011-04-20 | 储贻斌 | Automatic rainwater collecting distribution station |
| CN104499467A (en) * | 2014-11-26 | 2015-04-08 | 烟台大学 | Field drainage and ventilation system and burying device |
| CN205935042U (en) * | 2016-08-22 | 2017-02-08 | 河南省建筑科学研究院有限公司 | Sponge urban rainwater processing system |
| CN207581602U (en) * | 2017-11-21 | 2018-07-06 | 浙江达人环保科技股份有限公司 | Anticlogging rainwater ecological purification utilization system |
| CN107869182A (en) * | 2017-11-22 | 2018-04-03 | 中国地质科学院水文地质环境地质研究所 | A kind of depthkeeping processing seepage well filter material layer blocks the devices and methods therefor of suspension |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227456A (en) * | 2020-09-29 | 2021-01-15 | 郑小宇 | Rainwater recovery unit that high-efficient development of water resource was utilized |
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| CN111115907B (en) | 2022-03-11 |
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