CN104372845A - Urban road early runoff rainwater pollutant interception treatment device - Google Patents

Abstract

The invention discloses a sewage interception and treatment device for initial runoff rainwater on urban pavement, which is characterized in that it comprises: a water inlet sewage interception and diversion module (1), a sedimentation tank module (2), a water purification pool module (3) and self-controlled water lifting module (4); the water outlet of the water inlet interception and diversion module (1) is connected to the water inlet of the sedimentation tank module (2), and the water outlet of the sedimentation tank module (2) is connected to the self-controlled water extraction The water inlet of the module (4) is connected, the water outlet of the self-controlled water lifting module (4) is respectively connected with the water inlet of the water purification pool module (3) and the irrigation nozzle of the green land surface (5), and the water purification The water outlet of the pool module (3) communicates with the self-controlled water lifting module (4). The device provided by the present invention provides an initial runoff rainwater interception treatment device for urban pavement, realizes the recycling of rainwater resources, is environmentally friendly and efficient, and meets the requirements of ecological water use. At the same time, the device has a simple and compact structure, low cost, is economical and applicable, and is simple and feasible.

Description

A treatment device for initial runoff rainwater interception on urban pavement

technical field

The invention relates to a sewage interception and treatment device for initial runoff rainwater on urban pavement, in particular to a sewage interception treatment device for storing rainfall and purifying initial runoff rainwater in cities, and belongs to the technical field of water conservancy engineering.

Background technique

With the development of urbanization, the area of impermeable ground increases at a high speed, leading to the accumulation of pollutants, which makes the road rainwater hold a large amount of pollutants. Sansalone .J.J of Germany showed in the research of road runoff that the initial 20% rainwater runoff The pollution load of rainwater accounts for 80% of the total rainfall pollution. Therefore, the interception and treatment of initial rainwater can effectively control the water pollution caused by runoff. At present, there are different measures for rainwater pollution treatment at home and abroad. Most of the foreign countries directly collect rainwater for reuse. Domestically, the initial rainwater is directly introduced into the sewage treatment plant, ignoring the limited decontamination capacity of the sewage treatment plant. Disposal Discharge directly into natural water bodies. Therefore, it is necessary to develop an initial runoff rainwater interception treatment device that can make up for these deficiencies, collect and purify urban road rainwater, and use the purified rainwater to irrigate green spaces to improve water resource utilization.

Contents of the invention

The technical problem to be solved by the present invention is to provide an initial rainwater collection that can control 20%, fully considering the interception and purification capacity and the distribution of rainwater pollution sources; further, the present invention realizes rain collection, sewage interception, Water purification and irrigation functions are integrated; further, the present invention realizes the automatic control of rain collection, sewage interception, water purification and irrigation, and also realizes the dual-purpose of one pump, which makes the overall structure of the present invention compact and suitable for Practical; further, the present invention realizes the green and sustainable utilization of energy, uses windmills and solar panels to store wind energy and solar energy, and converts them into electrical energy and stores them in the power storage device to provide green energy for the entire device; further Specifically, the sedimentation tank of the present invention adopts a geotechnical tarpaulin with at least 95% hollow space, which has super pressure bearing capacity, can realize more efficient water storage, is economical and applicable, and is easy to construct.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A treatment device for initial runoff rainwater interception on urban pavement, characterized in that it includes: a water inlet sewage interception and diversion module, a sedimentation tank module, a water purification tank module and a self-control water lifting module; the water outlet of the water inlet sewage diversion module It is connected with the water inlet of the sedimentation tank module, the water outlet of the sedimentation tank module is connected with the water inlet of the self-control water lifting module, and the water outlet of the self-control water lifting module is respectively connected with the inlet of the water purification tank module. The water outlet is connected with the irrigation spout on the surface of the green space;

The sewage interception and diversion module of the water inlet includes a ditch for collecting rainwater, a sewage interception hanging basket at the water inlet, a sewage interception hanging basket for the device, a float valve ball for controlling the collection of initial rainwater, a first aqueduct, and a first maintenance well The ditch is located underground next to the road, the water inlet sewage intercepting hanging basket is connected to the surface of the road and the ditch, the bottom end of the ditch has an opening and is connected to the water inlet of the first aqueduct, The sewage intercepting hanging basket of the device is placed at the water inlet of the first aqueduct, and the bottom end of the sewage intercepting hanging basket of the device is trumpet-shaped and open, and the floating valve ball is placed in the first aqueduct. The water outlet of the first water conduit is connected to the water inlet of the sedimentation tank module, and the first maintenance well is arranged on the road directly above the first water conduit.

The sedimentation tank module includes a sedimentation tank, a sedimentation area and a mud discharge hole, the water outlet of the first aqueduct is connected to the water inlet of the sedimentation tank, and the sedimentation tank is located below the surface of the green land, so The sedimentation area is provided below the sedimentation tank, and the mud discharge hole is provided in the sedimentation area.

The self-controlled water lifting module includes a windmill, a solar panel, a circuit connection line, an electric storage device, a control valve, a water level monitor, a second maintenance well, a water pump, a second aqueduct and a third aqueduct, and the windmill is arranged on On the ground, the solar panel is installed on the windmill, the circuit connection line connects the windmill, the solar panel and the power storage device, and the second maintenance shaft is located at the sedimentation tank module and the water purification tank module The sedimentation tank module and the water purification tank module are connected between them, the water pump is arranged in the second maintenance well, and the water pump is connected with the irrigation spout on the surface of the green land through the second aqueduct, and the water pump It is also connected to the water inlet of the water purification tank module through the third water guide pipe, and the water level monitor is provided with two, which are respectively located in the sedimentation tank and the water purification tank module, and the water level monitor passes through the The control valve is electrically connected to the power storage device.

The windmill, the solar panel, the power storage device, the control valve and the water level monitor are connected through a circuit connection line to form an energy supply device integrating power storage and power supply.

The water purification pool module includes a water purification pool, a floating bed body and a floating bed frame, the third aqueduct is connected to the water inlet of the water purification pool, and the water purification pool is divided into several by the floating bed frame In the area, the floating bed body is erected on the floating bed frame, and the floating bed plants used for water purification are planted on the floating bed body.

The water inlet sewage interception and diversion module is located above the invention, the sedimentation tank module and the water purification tank module are horizontally arranged under the surface of the green space, and the self-control water lifting module provides electric energy for the invention, making the invention a self-control structure .

The first aqueduct, the second aqueduct and the third aqueduct are all PP-R pipes.

The diameter of the floating valve ball is greater than the minimum pipe diameter of the device's sewage intercepting hanging basket, and is greater than the diameter of the bottom end of the device's sewage intercepting hanging basket.

The diameter of the floating valve ball is slightly larger than the minimum pipe diameter of the sewage intercepting hanging basket of the device, which can collect 20% of the initial rainwater.

The capacity of the sedimentation tank is at least containing the initial rainwater accounting for 20% of the total rainfall, the upper surface of the sedimentation tank is flush with the lower surface of the ditch, and the material of the sedimentation tank module is selected to have at least 95 % hollow space geotechnical tarpaulins.

The sedimentation tank is made of geotechnical waterproof cloth with 95% of the hollow space.

The calculation method of the capacity of the sedimentation tank is the ultimate strength method.

Ultimate strength method: When the rainwater in the whole basin participates in the confluence, the flow generated is the largest;

1. When the rainwater flow at the farthest point on the catchment area reaches the catchment point, confluence will occur in the entire area, and the design flow rate of the rainwater pipeline will be the largest;

2. When the rainfall duration is equal to the gathering time for the rainwater at the farthest point on the catchment area to reach the gathering point, the rainwater pipeline needs to discharge the largest amount of rainwater.

The bottom surface of the sediment deposition area has a slope, and the mud discharge hole is arranged on the side of the steep slope end.

The control valve includes a first control valve, a second control valve, a third control valve and a fourth control valve, the first control valve is set at the water outlet of the sedimentation tank, and the second control valve is set at On the second water guide pipe, the third control valve is arranged on the third water guide pipe, and the fourth control valve is arranged at the water outlet of the water purification tank.

The combination of switches of different control valves realizes the multifunctional integration of water storage, water purification, irrigation and the like in the present invention.

At least three probes for detecting different water levels are arranged on the water level monitor.

The working principle of the present invention is as follows:

Rain collection and purification: When the city is raining, the rainwater on the road passes through the ditch, and the sewage on the road is initially intercepted by the sewage intercepting hanging basket at the water inlet, and then the sewage intercepting hanging basket is installed to achieve the second pollution interception effect. The rainwater passes through the first The aqueduct is injected into the sedimentation tank module. When the initial rainwater collection reaches 20%, the floating valve ball set in the first aqueduct moves up to block the water inlet of the water inlet interception and diversion module to complete the rainwater collection of this rainfall. collect. The rainwater injected into the sedimentation tank, after sedimentation, the sediment passes through the sediment sedimentation area and is discharged from the mud discharge hole. At this time, the self-controlled water lifting module opens the first control valve and the third control valve, and closes the second control valve and the fourth control valve. Control valve, the water after sedimentation is extracted by the water pump, and injected into the water purification tank through the third aqueduct. The floating bed plants in the water purification tank have good purification effect and can beautify the environment. The floating bed plants are such as canna.

Water intake for irrigation: The electric energy of the present invention is provided by solar panels and windmills, and stored in the power storage device. When the surface of the green land needs to lift water for irrigation, the self-control water lift module opens the second control valve and the fourth control valve, and closes the first control valve. The control valve and the third control valve supply power to the water pump through the power storage device, and the water pump extracts the purified water in the water purification tank through the third aqueduct, and realizes irrigating the green space through the irrigation spout.

The law of pollutant erosion is that the pollution load in the initial 20% of rainwater runoff accounts for 80% of the total rainfall pollution, so the interception and treatment of initial rainwater can effectively control the water pollution caused by runoff.

At present, our country directly introduces the initial rainwater into the sewage treatment plant, ignoring the limited decontamination capacity of the sewage treatment plant, and the excess sewage is directly discharged into the natural water body without treatment. the

Rainwater contains various pollutants (suspended particles (SS), N, P and other nutrient elements, metal elements, organic compounds, etc.), and various pollutants in the initial 20% of rainwater account for 80% of the entire rainfall pollution; The invention first uses the sewage intercepting hanging basket at the water inlet to carry out physical purification, that is, initially removes large particles of sediment, broken garbage, floating objects, leaves, etc.; then uses the floating valve ball to intercept 20% of the initial rainwater to the sedimentation tank, and the remaining 80% of the later stage Rainwater is discharged to lakes and rivers through ditches; 20% of the initial rainwater is deposited in the sedimentation tank to remove sediment and then discharged to the purification tank. Plants absorb and soil infiltration in the purification tank removes a large number of plant nutrients and organic matter. The purified water is the amount of organic matter The lower water body is used to irrigate vegetation such as lawns and trees.

The present invention provides an urban road initial runoff rainwater interception treatment device, which can purify the polluted rainwater while collecting urban road rainwater, and use it for green space irrigation to realize the recycling of rainwater resources; the present invention utilizes floating valve balls to control 20% of the initial rainwater collection, fully considering the sewage interception and water purification capacity and the distribution of rainwater pollution sources, that is, the floating valve ball is a rainwater diverter, which can collect 20% of the initial rainfall; the invention has a compact structure and utilizes gutters to collect rain , hanging basket to intercept sewage, filter in sedimentation tank, purify water in water purification pool, and then pump water to realize irrigation, so that rain collection, sewage interception, water purification and irrigation functions are integrated; the invention uses a water level monitor to realize automatic control of the device As well as the dual-purpose of the water pump, the first is to inject the rainwater deposited in the sedimentation tank into the purification tank, and the second is to extract the purified water from the purification tank for green land irrigation; the present invention also uses green energy to provide electric energy for the device , Utilize windmills and solar panels to store wind energy and solar energy, and convert them into electric energy and store them in the storage device, so as to provide green energy for the present invention; in addition, the sedimentation tank of the present invention adopts a geotechnical tarpaulin with 95% hollow space , has super pressure bearing capacity, can realize more efficient water storage, is economical and applicable, and is easy to construct.

The invention provides an urban pavement initial runoff rainwater interception and sewage treatment device, which uses rainwater as a treatment carrier to realize the recycling of rainwater resources through rain collection, sewage interception and purification, automatic water lifting and irrigation, which is environmentally friendly and efficient, and meets the requirements of ecological water use ; Simultaneously, the structure of the device is simple and compact, low in cost, economical and applicable, simple and feasible. In summary, the device has good promotion value and application prospect.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the top view of the present invention;

Fig. 3 is the structural representation of water level monitor among the present invention;

Fig. 4 is a trend diagram of rainfall time-rainwater amount in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, an urban pavement initial runoff rainwater interception treatment device is characterized in that it includes: a water inlet sewage interception and diversion module 1, a sedimentation tank module 2, a water purification tank module 3 and a self-controlled water lifting module 4 ; The water outlet of the water inlet interception and diversion module 1 is connected with the water inlet of the sedimentation tank module 2, the water outlet of the sedimentation tank module 2 is connected with the water inlet of the automatic control water lifting module 4, and the automatic control The water outlet of the water-lifting module 4 is connected with the water inlet of the water purification pool module 3 and the irrigation spout of the green space surface 5 respectively, and the water outlet of the water purification pool module 3 is connected with the self-control water lifting module 4;

The water inlet sewage interception and diversion module 1 includes a ditch 11 for collecting rainwater, a water inlet sewage interception hanging basket 12, a device sewage interception hanging basket 13, a floating valve ball 14 for controlling the collection of initial rainwater, and a first aqueduct 15 and the first maintenance well 16; the ditch 11 is located underground next to the road 6, the water inlet sewage interception hanging basket 12 communicates with the surface of the road 6 and the ditch 11, and the bottom end of the ditch 11 has a Open and connected to the water inlet of the first water guide pipe 15, the water inlet of the first water guide pipe 15 is placed with the device intercepting the sewage hanging basket 13, and the bottom end of the device intercepting the sewage hanging basket 13 is trumpet-shaped and has an opening. , the float valve ball 14 is placed in the first aqueduct 15, the water outlet of the first aqueduct 15 is connected to the water inlet of the sedimentation tank module 2, and the first maintenance well 16 is located in the On the road 6 directly above the first water conduit 15 .

The sedimentation tank module 2 includes a sedimentation tank 21, a sedimentation area 22, and a mud discharge hole 23. The water outlet of the first aqueduct 15 is connected to the water inlet of the sedimentation tank 21, and the sedimentation tank 21 is located at the Below the green land surface 5, the sedimentation area 22 is provided below the sedimentation tank 21, and the sedimentation area 22 is provided with the mud discharge hole 23.

The self-controlled water lifting module 4 includes a windmill 41, a solar panel 42, a circuit connection line 43, an electrical storage device 44, a control valve 45, a water level monitor 46, a second maintenance well 47, a water pump 48, a second water guide pipe 49 and The third water pipe 410, the windmill 41 is arranged on the ground, the solar battery panel 42 is installed on the windmill 41, and the circuit connection line 43 is connected to the windmill 41, the solar battery panel 42 and the power storage device 44 , the second maintenance well 47 is located between the sedimentation tank module 2 and the water purification tank module 3 and communicates with the sedimentation tank module 2 and the water purification tank module 3, and the second maintenance well 47 is provided with the A water pump 48, the water pump 48 is connected to the irrigation spout of the green land surface 5 through the second water guide pipe 49, and the water pump 48 is also connected to the water inlet of the water purification pool module 3 through the third water guide pipe 410 There are two water level monitors 46 located in the sedimentation tank 21 and the water purification tank module 3 respectively. The water level monitor 46 is electrically connected to the power storage device 44 through the control valve 45 .

The water purification tank module 3 includes a water purification tank 31, a floating bed body 32 and a floating bed frame 33, the third water guide pipe 410 is connected to the water inlet of the water purification tank 31, and the water purification tank 31 is formed by the The floating bed frame 33 is divided into several areas, the floating bed body 32 is erected on the floating bed frame body 33, and the floating bed plants 7 for water purification and water quality are cultivated on the floating bed body 32.

The diameter of the floating valve ball 14 is greater than the minimum pipe diameter of the device intercepting the dirt hanging basket 13, and greater than the diameter of the device intercepting the dirt hanging basket 13 bottom.

The capacity of the sedimentation tank 21 is at least containing the initial rainwater accounting for 20% of the total rainfall, the upper surface of the sedimentation tank 21 is flush with the lower surface of the ditch 11, and the material of the sedimentation tank module 2 is Choose a geotechnical tarpaulin with at least 95% hollow space.

The calculation method of the capacity of the sedimentation tank 21 is the ultimate strength method.

The bottom surface of the sediment sedimentation area 22 has a slope, and the mud discharge hole 23 is arranged on the side of the steep slope end.

The control valve 45 includes a first control valve 451, a second control valve 452, a third control valve 453 and a fourth control valve 454. The first control valve 451 is arranged at the water outlet of the sedimentation tank 21, so The second control valve 452 is set on the second water pipe 49, the third control valve 453 is set on the third water pipe 410, and the fourth control valve 454 is set on the water purification tank 31. at the water outlet.

The water level monitor 46 is provided with at least three probes for detecting different water levels.

As shown in Figure 4, an example is given to illustrate the calculation method of the volume of the sedimentation tank: in a specific rainfall, select a specific location, measure the rainfall of W1 and W2 with the rainfall time t and draw the curve, when W1=W2 (initial At this time, T=7.5 min; when t>T, the clean rainfall will increase significantly, while the growth rate of initial rainfall is slow. Therefore, the initial rainfall is the basis for calculating the volume of the sedimentation tank. At this time, W1=9.8m ³ , so the initial rainwater is taken as 10m ³ , that is, the volume of the sedimentation tank is determined to be 10m ³ .

W1 represents the initial rain, W2 represents the late rain, t represents the rainfall time, and T represents the rainfall time when W1=W2.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus, is characterized in that: comprising: water inlet cuts dirty diverter module (1), sedimentation basin module (2), clear water reservoir module (3) and automatic control water lift module (4); The delivery port that described water inlet cuts dirty diverter module (1) is connected with the water inlet of described sedimentation basin module (2), the delivery port of described sedimentation basin module (2) is connected with the water inlet of described automatic control water lift module (4), the delivery port of described automatic control water lift module (4) is connected with the irrigation spout of earth's surface, greenery patches (5) with the water inlet of described clear water reservoir module (3) respectively, and the delivery port of described clear water reservoir module (3) is connected with described automatic control water lift module (4);

Described water inlet cut dirty diverter module (1) comprise ditch (11) for collecting rainwater, water inlet Prefabricated combined septic tank (12), device Prefabricated combined septic tank (13), for controlling to collect the float valve ball (14) of early-stage rainwater, the first aqueduct (15) and the first inspection-pit (16), described ditch (11) is positioned at the other underground of road (6), described water inlet Prefabricated combined septic tank (12) is communicated with described road (6) earth's surface and described ditch (11), there is an opening described ditch (11) bottom and connects the water inlet of described first aqueduct (15), described device Prefabricated combined septic tank (13) is placed in the water inlet of described first aqueduct (15), described device Prefabricated combined septic tank (13) bottom is trumpet type and opening, described float valve ball (14) is placed in described first aqueduct (15), the delivery port of described first aqueduct (15) is connected with the water inlet of described sedimentation basin module (2), described first inspection-pit (16) is located on the described road (6) directly over described first aqueduct (15).

2. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 1, it is characterized in that: described sedimentation basin module (2) comprises sedimentation basin (21), sediment deposition district (22) and mudhole (23), the delivery port of described first aqueduct (15) is connected with the water inlet of described sedimentation basin (21), described sedimentation basin (21) is positioned at the below on earth's surface, described greenery patches (5), the below of described sedimentation basin (21) is provided with described sediment deposition district (22), and described sediment deposition district (22) is provided with described mudhole (23).

3. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 2, it is characterized in that: described automatic control water lift module (4) comprises windmill (41), solar panel (42), circuit connecting wire (43), electrical storage device (44), control valve (45), water level monitor (46), second inspection-pit (47), water pump (48), second aqueduct (49) and the 3rd aqueduct (410), described windmill (41) is arranged on ground, described windmill (41) is provided with described solar panel (42), described circuit connecting wire (43) connects described windmill (41), solar panel (42) and electrical storage device (44), described second inspection-pit (47) to be positioned between described sedimentation basin module (2) and clear water reservoir module (3) and to be communicated with described sedimentation basin module (2) and clear water reservoir module (3), described water pump (48) is provided with in described second inspection-pit (47), described water pump (48) is connected with the irrigation spout on earth's surface, described greenery patches (5) by described second aqueduct (49), described water pump (48) is also connected with the water inlet of described clear water reservoir module (3) by described 3rd aqueduct (410), described water level monitor (46) is provided with 2, lay respectively in described sedimentation basin (21) and clear water reservoir module (3), described water level monitor (46) is connected with described electrical storage device (44) electricity by described control valve (45).

4. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 3, it is characterized in that: described clear water reservoir module (3) comprises clear water reservoir (31), floating bed bed body (32) and floating bed framework (33), described 3rd aqueduct (410) is connected with the water inlet of described clear water reservoir (31), described clear water reservoir (31) is divided into some districts by described floating bed framework (33), the described floating bed bed body (32) of the upper erection of described floating bed framework (33), described floating bed bed body (32) is upper cultivates the floating bed plant (7) had for water purification water quality.

5. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 1, it is characterized in that: the diameter of described float valve ball (14) is greater than the minimum pipe of described device Prefabricated combined septic tank (13), and be greater than the straight of described device Prefabricated combined septic tank (13) bottom.

6. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 2, it is characterized in that: the capacity of described sedimentation basin (21) is that at least splendid attire accounts for the early-stage rainwater of whole amount of precipitation 20%, the upper surface of described sedimentation basin (21) is mutually concordant with the soffit of described ditch (11), and the material of described sedimentation basin module (2) is the geotechnological canvas cloth selecting the hollow space at least with 95%.

7. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 6, is characterized in that: the computational methods of the capacity of described sedimentation basin (21) are ultimate strenght method.

8. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 1, is characterized in that: the bottom surface of described sediment deposition district (22) is the gradient, and described mudhole (23) is arranged on the side of heavy grade end.

9. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 4, it is characterized in that: described control valve (45) comprises the first control valve (451), second control valve (452), 3rd control valve (453) and the 4th control valve (454), described first control valve (451) is arranged at the water outlet of described sedimentation basin (21), described second control valve (452) is arranged on described second aqueduct (49), described 3rd control valve (453) is arranged on described 3rd aqueduct (410), described 4th control valve (454) is arranged at the water outlet of described clear water reservoir (31).

10. a kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus according to claim 3, is characterized in that: described water level monitor (46) is at least arranged 3 for detecting the probe of different water level.