CN112830592B - Courtyard rainwater collecting and utilizing system and method - Google Patents
Courtyard rainwater collecting and utilizing system and method Download PDFInfo
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- CN112830592B CN112830592B CN202110160292.5A CN202110160292A CN112830592B CN 112830592 B CN112830592 B CN 112830592B CN 202110160292 A CN202110160292 A CN 202110160292A CN 112830592 B CN112830592 B CN 112830592B
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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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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- 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
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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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
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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
- C02F2303/16—Regeneration of sorbents, filters
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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
Abstract
The invention discloses a courtyard rainwater collecting and utilizing system and a courtyard rainwater collecting and utilizing method. The water collecting system comprises a water collecting tank and a first water level sensor, and a third valve is further arranged at the bottom of the water collecting tank; the initial rainwater collecting system comprises an initial water storage tank, the initial water storage tank is connected with a third valve through a drain pipe, a fourth valve is arranged in the initial water storage tank and divides the initial water storage tank into an upper-layer water storage tank and a lower-layer water storage tank, a second water level sensor is arranged in the lower-layer water storage tank, a fifth valve is further arranged at the bottom of the lower-layer water storage tank and is connected with a filtering system through a drain pipe; the water storage system comprises a water storage tank and a third water level sensor. Handle the initial stage rainwater according to the actual conditions, the maximize carries out courtyard rainwater and collects the utilization, utilizes the rainwater of cistern to clean for the primary screen device, prevents that the silt and the impurity that accumulate from hindering the circulation of rainwater.
Description
Technical Field
The invention belongs to the technical field of rainwater treatment, and particularly relates to a courtyard rainwater collecting and utilizing system and method.
Background
Water is an irreplaceable and precious natural resource, many areas in the world are at the edge of water resource exhaustion, and china is also a water-poor country. When the traditional water resource development mode can not increase water source, the rainwater is recycled to become an economical and practical water resource development mode, not only can the tap water be saved, but also the ecological balance is facilitated.
The courtyard rainwater is collected often can not arouse people's attention, but it also can retrieve a large amount of rainwater, through purification treatment back, can be applied to each aspect of family life, however courtyard rainwater filter equipment is less on the one hand, and can adhere to a large amount of silt and obstruct the circulation of rainwater on the filter, the filter speed of rainwater has been slowed down, thereby the collection efficiency of rainwater has been reduced, the purification treatment is collected to the rainwater that can't maximize, consider in addition that the pollution degree of initial stage rainwater is the biggest, should design a device of handling initial stage rainwater, it is different still to consider the rainfall of different time quantums, to above-mentioned problem, it is necessary to design a new courtyard rainwater processing apparatus.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a courtyard rainwater collecting and utilizing system and a courtyard rainwater collecting and utilizing method, which are used for treating initial rainwater according to practical conditions and maximally collecting and utilizing the courtyard rainwater by considering that the pollution degree of the initial rainwater is maximum and the rainfall is different in different time periods, and the rainwater in a reservoir is used for cleaning a primary screening device, so that accumulated silt and impurities are prevented from blocking the circulation of the rainwater.
In order to realize the purpose of the invention, the following scheme is adopted:
a courtyard rainwater collecting and utilizing system comprises a water collecting system, an initial rainwater collecting system, a settling system, a filtering system, a water storage system and a central controller.
The water collecting system comprises a water collecting tank, a primary screening device and a first water level sensor, wherein the primary screening device and the first water level sensor are positioned in the water collecting tank, the first water level sensor is used for collecting information of a water level line in the water collecting tank and transmitting the information to the central processing unit, the top of the water collecting tank is connected with a main pipe, the main pipe is used for collecting rainwater in a courtyard, the bottom of the water collecting tank is provided with a first sewage discharging system, the first sewage discharging system comprises a first valve and a first sewage discharging pipe, and the bottom of the water collecting tank is also provided with a third valve;
the initial rainwater collecting system comprises an initial water storage tank, the initial water storage tank is connected with a third valve through a drain pipe, a fourth valve is arranged in the initial water storage tank and divides the initial water storage tank into an upper layer water storage tank and a lower layer water storage tank, the upper layer water storage tank is sequentially connected with a precipitation system, a filtering system and a water storage system, a second water level sensor is arranged in the lower layer water storage tank and used for collecting information of a water level line in the lower layer water storage tank and transmitting the information to a central processing unit, a second sewage system is arranged at the bottom of the lower layer water storage tank and comprises a second valve and a second sewage pipe, a fifth valve is further arranged at the bottom of the lower layer water storage tank and connected with the filtering system through a drain pipe;
the sedimentation system comprises a sedimentation tank;
the water storage system comprises a plurality of sequentially connected water storage tanks and a third water level sensor positioned in the water storage tanks, the water storage tanks are connected through a communication pipe, the third water level sensor is used for collecting information of a water level line in the water storage tanks and transmitting the information to the central processing unit, the water storage tanks are also connected with a utilization system, the utilization system comprises a water suction pump, and the utilization system is used for pumping water in the water storage tanks out for reutilization;
the central controller is used for receiving the information of the water level sensor and comparing the received water level line information with a preset value, and when the water level line reaches the corresponding preset value, the central controller regulates and controls the opening and closing of the corresponding valve and is also used for regulating and controlling the starting and stopping of the water suction pump.
Further, the primary screening device comprises a screen and a rotating motor, the two ends of the screen are connected to the side wall of the water collecting tank through rotating shafts, one end of each rotating shaft is connected with the rotating motor, and the other end of each rotating shaft is in running fit with the side wall of the water collecting tank.
Further, filtration system includes that filtration pond group is organized, and filtration pond group includes first coarse filtration pond, second coarse filtration pond and first smart filtering pond, and sedimentation tank, first coarse filtration pond, cistern are connected gradually to the upper storage water tank, and the fifth valve passes through the drain pipe and connects gradually second coarse filtration pond, first smart filtering pond, cistern.
Furthermore, every cistern all is connected with the suction pump, and the suction pump is with the water pump that corresponds the cistern back of coming for different uses, and the cistern that is closest to filtration system is connected with two suction pumps, and one of them suction pump passes through the drain pipe and connects the header tank for provide rivers when giving clean prescreening device.
Furthermore, the communicating pipe is positioned at the top of the reservoir, so that the water in the reservoir flows into the next reservoir in an overflowing manner.
A courtyard rainwater collection and utilization method is realized by adopting the courtyard rainwater collection and utilization system, and comprises the following steps:
s1, before raining, closing a first valve, a second valve, a third valve and a fifth valve by a central controller;
s2, when raining begins, collecting rainwater in the courtyard to a header pipe, enabling the rainwater to flow into a water collecting tank through the header pipe, and simply filtering the rainwater through a screen, wherein the rainwater is stored in the water collecting tank, and a first water level sensor collects information of a water level line in the water collecting tank and transmits the information to a central processing unit;
s3, when the water level line reaches the height of the screen, the central controller opens the third valve, water in the water collecting tank flows into the initial water storage tank through the third valve, rainwater directly flows into the lower-layer water storage tank due to the fact that the fourth valve is in an open state, the second water level sensor collects information of the water level line in the lower-layer water storage tank and transmits the information to the central processor;
s4, when the water level line reaches the height of the fourth valve, the central controller closes the fourth valve, rainwater flows into the upper-layer water storage tank, the sedimentation tank, the first coarse filtering tank and the water storage tank in sequence, and the third water level sensor collects information of the water level line in the water storage tank and transmits the information to the central processor;
s5, the central controller judges whether rain stops or not according to information transmitted by the first water level sensor, and judges whether the last water storage tank is full of water or not according to information transmitted by the third water level sensor, so that different regulation and control schemes are made;
s6, after the rain stops, the central controller starts a cleaning mode, controls the rotating motor to rotate the screen by 180 degrees, enables the impurities on the upper layer of the screen to fall into the water collecting tank, then opens a corresponding switch of the water suction pump to pump the water of the first reservoir into the water collecting tank, flushes the impurities remained on the screen and the impurities in the water collecting tank completely, discharges the impurities through the first sewage discharge system, and after the cleaning is finished, closes the switch of the water suction pump, closes the first valve and opens the fourth valve;
s7, according to the direction of water flowing into the reservoir, the water in the reservoir is cleaner and cleaner, and according to the clean degree of the water in the reservoir, the water in each reservoir is set to different purposes, wherein the purposes comprise irrigation, toilet flushing, fountain washing and clothes washing.
Further, in S5: if when the water level line of the last reservoir reaches the top of the reservoir, rain does not stop, the third valve is closed by the central controller, the first valve is opened simultaneously, the rest rainwater is discharged through the first drain pipe, the second valve is opened by the central controller, the water in the lower-layer water storage tank is discharged through the second drain pipe, and when the water level line in the lower-layer water storage tank is 0, the second valve is closed by the central processor.
Further, in S5: if the water level line of the last reservoir does not reach the top of the reservoir and rain stops, the central controller closes the third valve and opens the first valve, the central controller also opens the fifth valve, water in the lower-layer water storage tank sequentially enters the second coarse filtering tank, the first fine filtering tank and the reservoir through the fifth valve, the third water level sensor collects information of the water level line in the reservoir and transmits the information to the central processor, and the central processor judges whether the last reservoir is full of water according to the information transmitted by the third water level sensor, so that different regulation schemes are made.
Further, in S5: if the water level line of the last reservoir does not reach the top of the reservoir and the water level line in the lower-layer water storage tank is reduced to 0, the CPU closes the fifth valve.
Further, in S5: if the water level line of the last reservoir reaches the top of the reservoir and the water level line in the lower-layer water storage tank is not reduced to 0, the central processor closes the fifth valve and opens the second valve at the same time, and the residual water in the lower-layer water storage tank is discharged through the second sewage discharge system.
The invention has the beneficial effects that:
1. in consideration of the maximum pollution degree of initial rainwater, the initial rainwater is stored in a lower-layer water storage tank by using a fourth valve, cleaner rainwater sequentially passes through a precipitation system and a filtering system and finally flows into water reservoirs, each water reservoir is provided with a water pump, the rainwater in the water reservoirs is pumped out for recycling, and the primary screening device is cleaned by using the rainwater in the water reservoirs, so that accumulated silt and impurities are prevented from blocking the circulation of the rainwater, and the flowing speed of the rainwater is further improved;
2. in the invention, the rainfall at different time periods is considered to be different, so the initial rainwater is treated according to the actual situation, the rainwater collection and purification treatment is carried out maximally, if the reservoirs are full of water after raining, the initial rainwater is directly discharged through the second sewage system, and the rest rainwater is discharged through the first sewage system; if the reservoir still has space, opening a fifth valve, performing secondary filtration on the initial rainwater, and finally flowing into the reservoir;
3. the middle section rainwater and the end section rainwater are cleaner than the initial rainwater, so the upper layer water storage tank is sequentially connected with the sedimentation tank, the first rough filtering tank and the water storage tank, the middle section rainwater and the end section rainwater are subjected to rough filtering, the fifth valve is sequentially connected with the second rough filtering tank, the first fine filtering tank and the water storage tank through the drain pipe, and the initial rainwater is subjected to secondary filtering, so that the cleanliness of the rainwater is ensured;
4. after rainwater is treated each time, the primary screening device needs to be cleaned, in order to improve the cleaning effect, the primary screening device comprises a screen and a rotating motor, two ends of the screen are connected to the side wall of a water collecting tank through rotating shafts, one end of the screen is connected with the rotating motor, a central controller controls the rotating motor to enable the screen to rotate 180 degrees, so that impurities on the upper layer of the screen fall into the water collecting tank, then a corresponding switch of a water suction pump is turned on, water of a first reservoir is pumped into the water collecting tank, and the impurities remained on the screen and the impurities in the water collecting tank are washed clean and discharged through a first sewage discharge system;
5. communicating pipe is located the cistern top, make the water of cistern flow into next cistern through the mode that overflows, according to the direction of rivers income cistern, water in the cistern is more and more clean, because the water cleanliness factor of first cistern is less than other cisterns, the event selects first cistern to be used for providing rivers when giving clean prescreening device, the water of first cistern still can be used to wash the lavatory, middle cistern can be used to irrigate, the fountain etc., the water cleanliness factor of last cistern is the highest, can be used for washing one's face and rinsing one's mouth after the clarifier again, wash clothes, kitchen water etc..
Drawings
FIG. 1 is a flow chart of a system architecture of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system configuration according to an embodiment of the present invention;
FIG. 3 is a schematic view of a rainwater collection process according to an embodiment of the present invention;
FIG. 4 is a schematic view illustrating an initial rainwater treatment process according to an embodiment of the present invention;
fig. 5 is an internal structure view of a water collecting tank according to an embodiment of the present invention.
Detailed Description
Example 1
As shown in fig. 1, the present embodiment provides a courtyard rainwater collection and utilization system, which includes a water collection system, an initial rainwater collection system, a precipitation system, a filtration system, a water storage system, and a central controller.
Specifically, as shown in fig. 2, the water collecting system includes a water collecting tank 1, and a primary screening device 11 and a first water level sensor 12 which are located in the water collecting tank 1, as shown in fig. 5, the primary screening device 11 includes a screen 111 and a rotating motor 112, two ends of the screen 111 are connected to a side wall of the water collecting tank 1 through a rotating shaft 113, the rotating shaft 113 at one end is connected to the rotating motor 112, the rotating shaft 113 at the other end is rotatably matched with the side wall of the water collecting tank 1, the first water level sensor 12 is used for collecting information of a water level line in the water collecting tank 1 and transmitting the information to a central processing unit, a header pipe 13 is connected to the top of the water collecting tank 1, the header pipe 13 is used for collecting rainwater in a courtyard, a first drainage system 6 is arranged at the bottom of the water collecting tank 1, the first drainage system 6 includes a first valve 61 and a first drainage pipe 62, and a third valve 14 is further arranged at the bottom of the water collecting tank 1.
Concretely, initial stage rainwater collecting system includes initial stage storage water tank 2, initial stage storage water tank 2 passes through water piping connection third valve 14, be equipped with fourth valve 21 in the initial stage storage water tank 2, fourth valve 21 divide into upper storage water tank 22 and lower floor storage water tank 23 with the initial stage storage water tank, upper storage water tank 22 connects gradually sedimentation system, a filtration system, the retaining system, be equipped with second level sensor 24 in the lower floor storage water tank 23, second level sensor 24 is used for gathering the information of lower floor storage water tank 23 internal water level line, and with above-mentioned information transmission to central processing unit, lower floor storage water tank 23 bottom is equipped with second drainage system 7, second drainage system 7 includes second valve 71 and second blow off pipe 72, lower floor storage water tank 23 bottom still is equipped with fifth valve 25, fifth valve 25 passes through water piping connection filtration system, sedimentation system includes sedimentation tank 3.
More specifically, the filtering system includes a filtering tank set 4, the filtering tank set 4 includes a first coarse filtering tank 41, a second coarse filtering tank 42 and a first fine filtering tank 43, as shown in fig. 3, the upper water storage tank is sequentially connected with the sedimentation tank 3, the first coarse filtering tank 41 and the water storage tank 5, as shown in fig. 4, the fifth valve is sequentially connected with the second coarse filtering tank 42, the first fine filtering tank 43 and the water storage tank 5 through the water discharge pipe.
Concretely, the retaining system includes a plurality of cisterns 5 that link to each other in proper order, and be located third level sensor 51 of cistern 5, link to each other through communicating pipe 52 between the cistern 5, communicating pipe 52 is located cistern 5 top, make the water of cistern 5 flow into next cistern 5 through the mode that overflows, the direction according to rivers income cistern 5 like this, water in cistern 5 is more and more clean, third level sensor 51 is used for gathering the information of cistern 5 internal water line, and with above-mentioned information transmission to central processing unit, cistern 5 still is connected with the utilization system, utilize the system to include suction pump 8, utilize the system to be used for taking out the water of cistern 5 to go on recycling.
More specifically, each reservoir 5 is connected with a water suction pump 8, the water suction pumps 8 suck up water corresponding to the reservoirs 5 for different purposes, the reservoir 5 closest to the filtering system is connected with two water suction pumps 8, one of the water suction pumps 8 is connected with the water collecting tank 1 through a drain pipe, because the water cleanliness of the first reservoir 5 is lower than that of the other reservoirs 5, the first reservoir 5 is selected to provide water flow for cleaning the prescreening device 11, the water of the first reservoir 5 can also be used for flushing a toilet, the middle reservoir 5 can be used for irrigation, a fountain and the like, and the water cleanliness of the last reservoir 5 is the highest and can be used for washing, washing clothes, kitchen water and the like after passing through a purifier.
Specifically, the central controller is configured to receive information of the water level sensor, compare the received water level line information with a preset value, and regulate opening and closing of a corresponding valve when the water level line reaches the corresponding preset value, and further regulate opening and closing of the water suction pump 8 and the rotating motor 112.
Example 2
This implementation provides a courtyard rainwater collection and utilization method, adopts the courtyard rainwater collection and utilization system in embodiment 1 to realize, including the step:
s1, before raining, no water exists in the water collecting tank 1, the first water level sensor 12 sends a signal that the water level line is 0 to the central controller, and the central controller closes the first valve 61, the second valve 71, the third valve 14 and the fifth valve 25;
s2, when raining begins, collecting rainwater in the courtyard to a main pipe 13 through a pipeline, an underground channel and the like on the ground, enabling the rainwater to flow into a water collecting tank 1 through the main pipe 13, filtering the rainwater through a screen 111 simply, storing the rainwater in the water collecting tank 1, collecting information of a water level line in the water collecting tank 1 through a first water level sensor 12, and transmitting the information to a central processing unit;
s3, as shown in figure 3, when the water level line reaches the height of the screen 111, the central controller opens the third valve 14, the water in the water collecting tank 1 flows into the initial water storage tank 2 through the third valve 14, rainwater directly flows into the lower water storage tank 23 because the fourth valve 21 is in an open state, and the second water level sensor 24 acquires the information of the water level line in the lower water storage tank 23 and transmits the information to the central processor;
s4, when the water level line reaches the height of the fourth valve 21, the central controller closes the fourth valve 21, rainwater flows into the upper-layer water storage tank 22, the sedimentation tank 3, the first coarse filtering tank 41 and the water storage tank 5 in sequence, and the third water level sensor 51 collects information of the water level line in the water storage tank 5 and transmits the information to the central processor;
s5, the central controller judges whether rain stops according to information transmitted by the first water level sensor 12, judges whether the last water storage tank 5 is filled with water according to information transmitted by the third water level sensor 51, if rain does not stop when the water level line of the last water storage tank 5 reaches the top of the water storage tank 5, the central controller closes the third valve 14, opens the first valve 61 at the same time, residual rain is discharged through the first drain pipe 62, the central controller also opens the second valve 71, water in the lower-layer water storage tank 23 is discharged through the second drain pipe 72, and when the water level line in the lower-layer water storage tank 23 is 0, the central processor closes the second valve 71;
s6, after the rain stops, the central controller starts a cleaning mode, controls the rotating motor 112 to rotate the screen 111 by 180 degrees, enables impurities on the upper layer of the screen 111 to fall into the water collecting tank 1, then opens a corresponding switch of the water suction pump 8 to suck water of the first reservoir 5 into the water collecting tank 1, flushes the impurities remaining on the screen 111 and the impurities in the water collecting tank 1 completely, discharges the impurities through a first sewage system, and after the cleaning is finished, closes the switch of the water suction pump 8, closes the first valve 61 and opens the fourth valve 21;
and S7, according to the direction of water flowing into the water storage tanks 5, the water in the water storage tanks 5 is cleaner, according to the cleanness degree of the water in the water storage tanks 5, the water in each water storage tank 5 is set to have different purposes, such as irrigation, toilet flushing, fountain and laundry washing, wherein the water in the first water storage tank 5 is also used for providing water flow for cleaning the screen 111, and the applicability is wide.
Example 3
This implementation provides a courtyard rainwater is collected and is utilized method, adopts the courtyard rainwater in embodiment 1 to collect and utilizes the system to realize, and is the same basically with embodiment 2's method step, and the same place is no longer described again, and the difference lies in:
in S5: the central controller judges whether rain stops according to the information transmitted by the first water level sensor 12, and judges whether the last reservoir 5 is full of water according to the information transmitted by the third water level sensor 51, as shown in fig. 4, if the water level line of the last reservoir 5 does not reach the top of the reservoir 5 and rain stops, the central controller closes the third valve 14, and opens the first valve 61, the central controller also opens the fifth valve 25, the water in the lower reservoir tank 23 sequentially enters the second rough filtering tank 42, the first fine filtering tank 43 and the reservoir 5 through the fifth valve 25, the third water level sensor 51 collects the information of the water level line in the reservoir 5 and transmits the information to the central processor, the central processor judges whether the last reservoir 5 is full of water according to the information transmitted by the third water level sensor 51, and if the water level line in the lower reservoir tank 23 has been lowered to 0 when the water level line of the last reservoir 5 does not reach the top of the reservoir 5, the central processor closes the fifth valve 25.
Example 4
This implementation provides a courtyard rainwater collection utilizes method, adopts the courtyard rainwater collection in embodiment 1 to utilize the system to realize, and is the same basically with embodiment 3's method step, and the same place is no longer repeated, and the difference lies in:
in S5: the central processor judges whether the last reservoir 5 is filled with water or not according to the information transmitted by the third water level sensor 51, if the water level line of the last reservoir 5 reaches the top of the reservoir 5 and the water level line in the lower water storage tank 23 is not lowered to 0, the central processor closes the fifth valve 25, and simultaneously opens the second valve 71, and the residual water in the lower water storage tank 23 is discharged through the second sewage system.
In conclusion, the invention considers that the pollution degree of the initial rainwater is the largest, and the rainfall in different time periods is different, so the initial rainwater is treated according to the actual situation, the rainwater treatment is carried out to the maximum extent, the rainwater of the reservoir is used for cleaning the primary screening device, the accumulated silt and impurities are prevented from obstructing the circulation of the rainwater, the flowing speed of the rainwater is further improved, and the water of the reservoir can also be used for flushing toilet irrigation, a fountain, washing, clothes washing, kitchen water and the like.
The above embodiments are only for illustrating the technical ideas and features of the present invention, and are not meant to be exclusive or limiting of the present invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention.
Claims (7)
1. A courtyard rainwater collecting and utilizing system is characterized by comprising a water collecting system, an initial rainwater collecting system, a settling system, a filtering system, a water storage system and a central controller;
the water collecting system comprises a water collecting tank (1), a prescreening device (11) and a first water level sensor (12), wherein the prescreening device (11) and the first water level sensor (12) are located in the water collecting tank (1), the first water level sensor (12) is used for collecting information of a water level line in the water collecting tank (1) and transmitting the information to a central controller, the top of the water collecting tank (1) is connected with a main pipe (13), the main pipe (13) is used for collecting rainwater in a courtyard, a first sewage discharging system (6) is arranged at the bottom of the water collecting tank (1), the first sewage discharging system (6) comprises a first valve (61) and a first sewage discharging pipe (62), and a third valve (14) is further arranged at the bottom of the water collecting tank (1);
the initial rainwater collection system comprises an initial water storage tank (2), the initial water storage tank (2) is connected with a third valve (14) through a drain pipe, a fourth valve (21) is arranged in the initial water storage tank (2), the initial water storage tank is divided into an upper water storage tank (22) and a lower water storage tank (23) by the fourth valve (21), the upper water storage tank (22) is sequentially connected with a precipitation system, a filtering system and a water storage system, a second water level sensor (24) is arranged in the lower water storage tank (23), the second water level sensor (24) is used for acquiring information of a water level line in the lower water storage tank (23) and transmitting the information to a central controller, a second sewage discharge system (7) is arranged at the bottom of the lower water storage tank (23), the second sewage discharge system (7) comprises a second valve (71) and a second sewage discharge pipe (72), a fifth valve (25) is further arranged at the bottom of the lower water storage tank (23), and the fifth valve (25) is connected with the filtering system through a drain pipe;
the sedimentation system comprises a sedimentation tank (3);
the filtering system comprises a filtering tank group (4), the filtering tank group (4) comprises a first coarse filtering tank (41), a second coarse filtering tank (42) and a first fine filtering tank (43), an upper-layer water storage tank is sequentially connected with a sedimentation tank (3), the first coarse filtering tank (41) and a reservoir (5), and a fifth valve is sequentially connected with the second coarse filtering tank (42), the first fine filtering tank (43) and the reservoir (5) through a water discharging pipe;
the water storage system comprises a plurality of sequentially connected water storage tanks (5) and a third water level sensor (51) positioned in the water storage tanks (5), the water storage tanks (5) are connected through a communication pipe (52), the third water level sensor (51) is used for collecting information of water level lines in the water storage tanks (5) and transmitting the information to the central controller, the water storage tanks (5) are also connected with a utilization system, the utilization system comprises a water suction pump (8), and the utilization system is used for pumping out water in the water storage tanks (5) for reutilization;
the central controller is used for receiving the information of the water level sensor and comparing the received water level line information with a preset value, and when the water level line reaches the corresponding preset value, the central controller regulates and controls the opening and closing of the corresponding valve and the opening and closing of the water suction pump (8).
2. The courtyard rainwater collecting and utilizing system as claimed in claim 1, wherein the primary screening device (11) comprises a screen (111) and a rotating motor (112), two ends of the screen (111) are connected to the side wall of the water collecting tank (1) through rotating shafts (113), one end of the rotating shaft (113) is connected with the rotating motor (112), and the other end of the rotating shaft (113) is in running fit with the side wall of the water collecting tank (1).
3. A system for collecting and utilizing stormwater in a garden as claimed in claim 1 or 2, characterised in that each reservoir (5) is connected to a suction pump (8), the suction pump (8) being adapted to different uses after having drawn up the water corresponding to the reservoir (5), the reservoir (5) closest to the filtration system being connected to two suction pumps (8), one of the suction pumps (8) being connected to the collection tank (1) via a drain for providing a flow of water when cleaning the prescreening device (11).
4. The courtyard rainwater collection and utilization system of claim 3, wherein a communication pipe (52) is located at the top of the reservoir (5) to allow water from the reservoir (5) to flow into the next reservoir (5) by means of overflow.
5. A method for collecting and utilizing garden rainwater, which is realized by the system for collecting and utilizing garden rainwater according to claim 4, and comprises the following steps:
s1, before raining, the central controller closes a first valve (61), a second valve (71), a third valve (14) and a fifth valve (25);
s2, when raining begins, rainwater in the courtyard is collected to the header pipe (13), the rainwater flows into the water collecting tank (1) through the header pipe (13), the rainwater is firstly stored in the water collecting tank (1) through simple filtering of the screen (111), the first water level sensor (12) collects information of a water level line in the water collecting tank (1), and the information is transmitted to the central controller;
s3, when the water level line reaches the height of the screen (111), the central controller opens the third valve (14), water in the water collecting tank (1) flows into the initial water storage tank (2) through the third valve (14), rainwater directly flows into the lower-layer water storage tank (23) due to the fact that the fourth valve (21) is in an open state, and the second water level sensor (24) collects information of the water level line in the lower-layer water storage tank (23) and transmits the information to the central controller;
s4, when the water level line reaches the height of the fourth valve (21), the central controller closes the fourth valve (21), rainwater flows into the upper-layer water storage tank (22), the sedimentation tank (3), the first coarse filtering tank (41) and the water storage tank (5) in sequence, and the third water level sensor (51) collects information of the water level line in the water storage tank (5) and transmits the information to the central controller;
s5, the central controller judges whether rain stops or not according to the information transmitted by the first water level sensor (12), and judges whether the last reservoir (5) is full of water or not according to the information transmitted by the third water level sensor (51), so that different regulation and control schemes are made;
one is as follows: if the rain does not stop when the water level line of the last reservoir (5) reaches the top of the reservoir (5), the central controller closes the third valve (14), opens the first valve (61), discharges the residual rain water through the first drain pipe (62), opens the second valve (71), discharges the water in the lower-layer water storage tank (23) through the second drain pipe (72), and closes the second valve (71) when the water level line in the lower-layer water storage tank (23) is 0;
the second step is as follows: if the water level line of the last reservoir (5) does not reach the top of the reservoir (5) and rain stops, the central controller closes the third valve (14), opens the first valve (61) at the same time, and also opens the fifth valve (25), the water in the lower-layer water storage tank (23) sequentially enters the second coarse filter tank (42), the first fine filter tank (43) and the reservoir (5) through the fifth valve (25), the third water level sensor (51) collects the information of the water level line in the reservoir (5) and transmits the information to the central controller, and the central controller judges whether the last reservoir (5) is full of water or not according to the information transmitted by the third water level sensor (51), so that different regulation schemes are made;
s6, after the rain stops, the central controller starts a cleaning mode, controls the rotating motor (112) to rotate the screen (111) by 180 degrees, enables impurities on the upper layer of the screen (111) to fall into the water collecting tank (1), then opens a corresponding switch of the water suction pump (8), pumps water of the first reservoir (5) into the water collecting tank (1), washes the impurities remained on the screen (111) and the impurities in the water collecting tank (1) completely, discharges the impurities through the first sewage discharge system, and after the cleaning is finished, closes the switch of the water suction pump (8), closes the first valve (61) and opens the fourth valve (21);
and S7, according to the direction of water flowing into the water reservoirs (5), the water in the water reservoirs (5) is cleaner and cleaner, and according to the cleanliness of the water in the water reservoirs (5), the water in each water reservoir (5) is set to different uses, wherein the uses comprise irrigation, toilet flushing, fountain and laundry washing.
6. The yard rainwater collection and utilization method according to claim 5, wherein in S5: if the water level in the lower water storage tank (23) is lowered to 0 when the water level of the last water storage tank (5) does not reach the top of the water storage tank (5), the central controller closes the fifth valve (25).
7. The yard rainwater collection and utilization method according to claim 5, wherein in S5: if the water level in the lower water storage tank (23) is not lowered to 0 when the water level of the last water storage tank (5) reaches the top of the water storage tank (5), the central controller closes the fifth valve (25) and simultaneously opens the second valve (71), and the residual water in the lower water storage tank (23) is discharged through the second sewage system.
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