CN109797839B - Urban road gutter inlet efficient sewage interception device and sewage interception operation method - Google Patents
Urban road gutter inlet efficient sewage interception device and sewage interception operation method Download PDFInfo
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- CN109797839B CN109797839B CN201910136964.1A CN201910136964A CN109797839B CN 109797839 B CN109797839 B CN 109797839B CN 201910136964 A CN201910136964 A CN 201910136964A CN 109797839 B CN109797839 B CN 109797839B
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Abstract
The invention relates to an efficient sewage interception device for urban road gutter inlet and a sewage interception operation method, comprising a collecting well body and a water collecting pipe; the collecting well body comprises an upper collecting well body and a lower collecting well body which are detachably inserted into a whole up and down, and the bottom of the lower collecting well body is provided with a microorganism packing layer; the rainwater grate is installed on the upper end of the upper collecting well body, a vertical flow sand settling device is arranged in the upper collecting well body, the rainwater grate is of a hanging basket type structure, the rainwater grate is of an upper-lower two-section type structure, the vertical flow sand settling device comprises a reflecting part, a silt intercepting part and an anti-sludge resuspension part which are arranged from top to bottom, the reflecting part is of an inverted splayed structure, the silt intercepting part is of a rectangular pyramid structure, and the anti-sludge resuspension part is of an inverted square frustum structure. The invention combines the gully sewage interception and reconstruction technology, the vertical flow sand settling device and the bottom microbial packing layer into an integrated device, realizes double interception of particles such as larger solid pollutants, sand and the like, and can also ecologically degrade sludge deposited at the bottom.
Description
Technical Field
The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to an efficient sewage interception device for an urban road gutter inlet and a sewage interception operation method.
Background
The gully is a facility for collecting surface water in a pipeline drainage system, is an accessory structure of a city drainage system, mainly comprises a water inlet grate, a well body, a branch pipe and the like, and is mainly divided into a partial ditch type, a flat grate type, a vertical grate type and a combined type according to forms. Gullies are typically located at a distance from a block, square, street intersection, and street gutters to collect rainwater above ground to prevent the rainwater from flooding a road or low lying area with water to impede traffic or damage the road. In a road drainage system, a rainwater inlet is not only a throat where rainwater runoff is collected by a rainwater pipe network of an urban road, but also a main channel where non-point-source pollutants enter a water environment. A large amount of silt generated by the 'high greenbelt' washing of the periphery of the road and part of solid pollutants on the road surface easily enter a drainage system through a rainwater port without any interception measure. In urban streets, particularly near restaurants, a large amount of leftovers, plastic bags and other domestic garbage are accumulated near the rainwater inlet, and a large amount of residual soup and the like containing grease, protein and starch directly flow into water bodies such as urban rivers and lakes along with rainwater after being poured into the rainwater inlet, so that serious pollution is caused to the urban water bodies. If the inlet for stom water takes place to block up because of rubbish is piled up, in case the torrential rain comes, drainage flood discharge function will receive serious influence, causes road ponding, seriously influences resident's trip and safety. Therefore, the method controls the garbage and pollutants entering the urban drainage pipe network from the source, and is one of economic and effective means for reducing water pollution and urban waterlogging.
Traditional urban road drainage engineering focuses on the safety problem of road surface drainage, but as the bottleneck that urban rainwater pipe networks collect rainwater, the design of most rainwater mouths can not effectively intercept pollutants entering the rainwater mouths. In addition, due to poor management and artificial pollution to the rainwater openings in the arid period, the blockage of the pipelines and the rainwater openings reduces the drainage capacity of a pipe network, and great pressure is brought to urban drainage. By reasonably designing and building the gutter inlet sewage interception facility, runoff pollutants can be controlled from a pipe network source, water and soil loss can be prevented, the gutter inlet can be prevented from being blocked, and the urban waterlogging phenomenon can be effectively relieved. For a long time, the structure and function of the rainwater port are actively explored and improved in many countries and cities, and the current rainwater sewage interception technology mainly comprises the sewage interception reconstruction of the traditional rainwater port, an integrated sewage interception rainwater port and a rainwater port sewage interception temporary protection technology, wherein the traditional rainwater port sewage interception reconstruction technology and the integrated sewage interception rainwater port are the main forms of the rainwater port sewage interception technology at home and abroad. The rainwater port sewage interception modification technology is a technology which aims at intercepting pollutants of a rainwater port by additionally arranging a sewage interception device in the conventional rainwater port without changing the structure of the conventional rainwater port. The rainwater port sewage interception reconstruction technology is low in cost and is suitable for sewage interception reconstruction of the existing urban rainwater port and sewage interception of a newly-built urban rainwater port. Although the gutter inlet cuts dirty transformation technology and can effectively solve the problem that the gutter inlet cuts dirty, this technique can only hold back the great rubbish thing that gets into the gutter inlet, receives the restriction of traditional gutter inlet structure to getting rid of particulate matter such as silt in the rainwater runoff. When the rainfall intensity is high, most of silt and other particulate matters carrying nitrogen, phosphorus and other chemical substances can directly enter the urban water body along with the rainwater pipe network, so that the growth of algae in the water body is promoted, and the water quality of the urban water body is influenced. When the rainwater velocity of flow descends, cause silt to deposit, pile up in drainage pipe network, can pollute the comparatively limpid rainwater in later stage, long-term accumulation will lead to drainage system's water capacity decline, hinders the rainwater in time to get rid of, blocks up inlet for stom water and pipeline even, if contain corrosive substance such as acidity in the silt, still will shorten drainage pipe's life. Therefore, the particles such as silt in the rainwater runoff are also important components for sewage interception of the rainwater inlet. The integral type cuts dirty inlet for stom technique is like the "subloop" inlet for stom of Etsu in the country rule, but is not suitable for the pre-buried connecting pipe 1% slope of inlet for stom in the internal standard, and the sediment bottom can deposit water in addition, causes the bottom to clear up the difficulty, does not have the rainfall for a long time and probably causes its quality of water to deteriorate to and give off phenomenons such as stench.
In recent years, there are many modification techniques related to the technology of the gutter inlet sewage interception hanging basket, such as filling a filter material around a sewage interception net (patent CN203741978U), and using a double-layer sewage interception hanging basket (patent CN 204212253U). However, according to the structure of the existing gully, the conventional sewage interception basket hanging technology has the defects of unsmooth drainage and unobvious interception effect on particles such as silt in the reconstruction of the sewage interception basket hanging technology, and can not meet the dual requirements of flood prevention and interception of particles such as silt in the gully.
Therefore, for solving the problem of accumulation of particle pollutants in the rainwater port, the integrated device combining the rainwater port sewage interception modification technology, the vertical flow sand settling device and the bottom microbial packing layer is provided, double interception of particles such as large solid pollutants, silt and the like is realized, and meanwhile, the urban road rainwater port efficient sewage interception device and the sewage interception operation method for ecological degradation of sludge deposited at the bottom have important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an integrated device combining a rainwater port sewage interception modification technology, a vertical flow sand settling device and a bottom microbial packing layer, so that double interception of particles such as large solid pollutants, silt and the like is realized, and simultaneously, sludge deposited at the bottom can be ecologically degraded.
The invention is realized by adopting the following technical scheme:
an efficient sewage interception device for urban road gullies comprises a collection well body and a water collection pipe arranged on the side wall of the collection well body;
the collecting well body comprises an upper collecting well body and a lower collecting well body which are detachably spliced into a whole from top to bottom, the upper collecting well body is of a vertically through structure, the lower collecting well body is of a structure with an opening at the upper end and a closed lower end, and a microbial packing layer is arranged at the bottom of the lower collecting well body;
the rainwater grate is installed on the upper end of the upper collecting well body, a vertical flow sand settling device is arranged in the upper collecting well body, the rainwater grate is of a hanging basket type structure, a metal grid net is evenly arranged on the side wall of the rainwater grate to form a hanging basket overflow port, the rainwater grate is of an upper-lower two-section type structure, a filter layer is paved on the lower portion of the side wall and the upper wall of the bottom wall of the rainwater grate, the vertical flow sand settling device comprises a reflecting part, a silt intercepting part and an anti-sludge resuspension part which are arranged from top to bottom, the reflecting part is of an inverted splayed structure, the silt intercepting part is of a rectangular pyramid structure, and the anti-sludge resuspension part is of an inverted square frustum structure.
Preferably, the upper collecting well body is of a vertically-through cubic structure, and the lower collecting well body is of a cubic structure with an upper opening and a lower end being closed.
Further preferably, the reflecting component comprises a first reflecting plate and a second reflecting plate which are symmetrically arranged, the upper edges of the first reflecting plate and the second reflecting plate are fixedly connected with the inner wall of the upper collecting well body respectively, and the inclination angle between the first reflecting plate and the upper collecting well body is 30-60 degrees.
Preferably, the pipe orifice of the water collecting pipe is positioned above the reflecting component, the pipe orifice of the water collecting pipe is installed on the side wall of the upper collecting well body, and the distance between the pipe orifice of the water collecting pipe and the first reflecting plate and the second reflecting plate in the reflecting component is 0.25-0.5 m.
Further preferably, silt is held back the rectangular pyramid structure that the part encloses for four first curb plates, anti-mud resuspension part is the four truncated pyramid structures that fall that four second curb plates enclose, the upper edge of second curb plate is in the part that suspends again with last collection well body inner wall looks rigid coupling, silt is held back four corner department of the lower part of part and is passed through supporter and second curb plate inner wall rigid coupling respectively.
Preferably, the filter layer is geotextile or nylon net.
Preferably, the microbial filler layer is a sand settling tank and a filler tank which are arranged up and down, the sand settling tank is filled with steel slag, zeolite or starch slag, and the filler tank is filled with microbial filler.
Based on the device, the invention also provides an efficient sewage interception operation method for the urban road gutter inlet, which comprises the following steps:
the method comprises the following steps: rainwater and pollutants carried by the rainwater flow into a rainwater grate in the collecting well body through an opening at the upper end of the collecting well body, the rainwater is purified when passing through the rainwater grate, the pollutants are intercepted, and the rainwater flows downwards to a vertical flow sand settling device;
step two: the water collecting pipe is arranged above the vertical flow sand settling device, and when the rainfall is large, rainwater can directly enter the drainage system through the water collecting pipe;
step three: when rainwater flows to the vertical flow sand settling device, the first reflecting plate and the second reflecting plate in the reflecting part can reflect rainwater flowing downwards, rainwater impact energy is reduced, sediment in the rainwater sinks along the gravity of the first reflecting plate and the second reflecting plate, the sediment intercepting part plays a role in guiding the rainwater and prevents the sediment from flowing upwards and reversely, the sediment precipitated by the sediment intercepting part flows into the position below the anti-sludge resuspension part through a gap between the sediment intercepting part and the anti-sludge resuspension part and sinks into the microbial packing layer below the anti-sludge resuspension part;
step four: the filler in the microbial filler layer is used for ecologically degrading the sediment deposited at the bottom;
step five: rainwater continuously flows into the collecting well body from the upper end opening of the collecting well body, the water level of the rainwater rises in the collecting well body, sediment at the bottom of the well is difficult to float upwards to the pipe orifice of the water collecting pipe under the blocking of the sludge anti-resuspension component, the sediment interception component and the reflection component along with the rising of the water level of the rainwater, and settled clean water enters a drainage pipe network along with the water collecting pipe;
step six: after long-term operation, the upper collecting well body can be dismantled from the lower collecting well body, and the sediment remained on the microorganism packing layer is removed.
The invention has the advantages and positive effects that:
1. the invention relates to an integrated device combining a rainwater port sewage interception modification technology, a vertical flow sand settling device and a bottom microbial packing layer, aiming at realizing double interception of larger solid pollutants, sand and other particles on the premise of not influencing the flood prevention function of a rainwater port, and simultaneously, ecologically degrading sludge deposited at the bottom, further purifying the quality of rainwater entering a rainwater pipe network and reducing the pollution of rainwater runoff on urban water.
2. The collecting well body comprises an upper collecting well body and a lower collecting well body which are detachably inserted into a whole from top to bottom, belongs to detachable equipment, is convenient to assemble, and facilitates later maintenance, overhaul, replacement and cleaning of the equipment.
3. According to the invention, the water collecting pipe is arranged above the vertical flow sand settling device, so that rainwater can be ensured to directly enter the drainage system through the water collecting pipe when the rainfall is large, the flood prevention function of the rainwater port cannot be influenced, and when the water level in the collecting well body rises, settled clean water can enter the drainage pipe network along with the water collecting pipe to reduce particles such as silt entering the pipe network system and entering the urban water body.
4. According to the invention, the rainwater grate arranged at the upper end of the upper collecting well body can intercept larger solid pollutants in rainwater runoff and play a role in initially intercepting pollutants in rainwater, and the rainwater grate is designed into an upper-lower two-section structure, so that the intercepting efficiency of pollutants is improved, the water passing capacity of the rainwater port is ensured, and the flood prevention function of the rainwater grate is not influenced.
5. According to the vertical flow sand settling device, the vertical flow sand settling device can realize efficient interception of particles such as silt and the like, so that a mud-water separation effect is achieved, the retention time is short, the occupied area is small, and the vertical flow sand settling device is suitable for being popularized and used at the bottom of a rainwater port.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the upper collection well of FIG. 1;
FIG. 3 is a schematic perspective view of the lower collection well of FIG. 1;
FIG. 4 is a schematic front view of the structure of FIG. 1;
FIG. 5 is a schematic front view of the upper collection well of FIG. 4;
FIG. 6 is a schematic longitudinal cross-sectional view of the structure of FIG. 5;
fig. 7 is a front view of the lower collection well of fig. 4.
In the figure: 1. the device comprises a rainwater grate, 2. a hanging basket overflow port, 3. a filter layer, 4. a reflection part, 41. a first reflection plate, 42. a second reflection plate, 5. a silt interception part, 6. a sludge anti-resuspension part, 7. a water collecting pipe, 8. a sand settling tank, 9. a filling tank, 10. an upper collecting well body and 11. a lower collecting well body.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1-7, an efficient sewage interception device for urban road gullies comprises a collection well body and a water collection pipe 7 arranged on the side wall of the collection well body; the collecting well body comprises an upper collecting well body 10 and a lower collecting well body 11 which are detachably spliced into a whole up and down, the upper collecting well body 10 is of a vertically through structure, the lower collecting well body 11 is of a structure with an opening at the upper end and a closed lower end, and a microorganism packing layer is arranged at the bottom of the lower collecting well body 11; the rainwater grate 1 is installed to the upper end of the upper collection well body 10, be equipped with the vertical flow sand settling device in the upper collection well body 10, rainwater grate 1 is for hanging basket formula structure, metal grid net formation string basket gap 2 has evenly been seted up on the lateral wall of rainwater grate 1, just rainwater grate 1 is two segmentation structures from top to bottom, rainwater grate 1's lateral wall lower part and diapire upper berth are equipped with filter layer 3, the vertical flow sand settling device includes from last to lower reflection part 4, silt hold-off part 5, the anti-mud resuspension part 6 that sets up, reflection part 4 is the splayed structure of falling, silt hold-off part 5 is the rectangular pyramid structure, anti-mud resuspension part 6 is the rectangular pyramid structure of falling.
Example (b): the invention relates to an integrated device combining a rainwater port sewage interception modification technology and a vertical flow sand settling device, aiming at achieving the effect of efficiently intercepting larger pollutants and small-particle solid pollutants on the premise of not influencing the flood prevention function of a rainwater port, purifying the quality of rainwater entering a rainwater pipe network and reducing the pollution of rainwater runoff on urban water. The collecting well comprises a collecting well body, wherein the collecting well body comprises an upper collecting well body 10 and a lower collecting well body 11 which are detachably spliced into a whole, the upper collecting well body 10 and the lower collecting well body 11 are spliced into a whole and are arranged below the ground when in use, rainwater, pollutants and the like can flow into the collecting well body from an opening at the upper end of the upper collecting well body 10, a water collecting pipe 7 is arranged on the side wall of the collecting well body, the water collecting pipe 7 is arranged above a vertical flow sand settling device, and rainwater can be ensured to directly enter a drainage system through the water collecting pipe 7 when the rainfall is large, so that the flood prevention function of a rainwater port cannot be influenced; on collect the upper end of well body 10 and install rainwater grate 1, on collect and be equipped with the vertical flow sand setting device in the well body 10, effect through rainwater grate 1, can hold back great solid pollutant in the rainwater runoff, play preliminary interception effect to pollutant in the rainwater, then particulate matters such as silt in the rainwater runoff are held back through the vertical flow sand setting device before the rainwater gets into pipe network system, along with the increase of ground rainwater collection volume, collect the internal water level of well and rise, particulate matters such as silt that the clear water through deposiing can get into water drainage pipe network along with receiving water pipe 7 and reduce the entering pipe network system and get into the urban water. The rainwater grate 1 is of a hanging basket type structure, metal grid meshes are uniformly arranged on the side wall of the rainwater grate 1 to form hanging basket overflow ports 2, so that a water seepage effect can be achieved, thick solid dirt can be intercepted by the rainwater grate 1, and the hanging basket overflow ports 2 can prevent the rainwater grate 1 from being blocked so as to reduce the overflowing capacity; in order to ensure the sewage interception effect, particularly, flushing solids in initial rainwater can be intercepted, and drainage is not unsmooth due to the rainwater grate 1 in heavy rain, the rainwater grate 1 can be designed into an upper-lower two-section structure, filter layers 3 are paved on the lower part of the side wall and the bottom wall of the rainwater grate 1, and the filter layers 3 are arranged to ensure strong water permeability on the premise of intercepting smaller pollutants; the middle vertical flow sand settling device can realize high-efficiency interception of particles such as silt, is short in retention time and small in occupied area, is suitable for being popularized and used at the bottom of the rainwater inlet, and the device also considers the design of material infiltration performance, avoids the occurrence of accumulated water at the bottom of the rainwater inlet, and is convenient to disassemble and clean in the later period. In addition, the collection well body includes from top to bottom can dismantle peg graft in the integrative collection well body 10, the lower collection well body 11 of going up, belongs to removable body, and the equipment is convenient, makes things convenient for the later stage to the maintenance, the change and the clearance of equipment.
The vertical flow sand settling device comprises a reflection part 4, a sediment interception part 5 and an anti-sludge resuspension part 6 which are arranged from top to bottom, wherein the reflection part 4 is of an inverted splayed structure, the sediment interception part 5 is of a rectangular pyramid structure, the anti-sludge resuspension part 6 is of an inverted square frustum structure, the reflection part 4 is arranged below a water collecting pipe 7, a reflection plate in the reflection part 4 can reflect water in the water collecting pipe or rainwater flowing downwards from a rainwater grate, so that the rainwater impact energy can be reduced, the sludge can conveniently sink along the gravity of the reflection plate, the effect of primary mud-water separation is achieved, the sediment interception part 5 is arranged below the reflection part 4, a mud-water mixture flowing downwards through the reflection part 4 passes through the sediment interception part 5, the sediment interception part 5 is of a rectangular pyramid structure, the effect of guiding can be achieved, and the effect of preventing the silt from flowing upwards in a reverse flow can be achieved, an anti-sludge resuspension component 6 is arranged below the sediment interception component 5, the device is of an inverted quadrangular frustum pyramid structure, sediment precipitated by the sediment interception component 5 can flow into the position below the anti-sludge resuspension component 6 through a gap between the sediment interception component 5 and the anti-sludge resuspension component 6 and enter a microbial packing layer to remove precipitated sludge and cleaning residual sludge through biodegradation, the packing in the microbial packing layer is beneficial to ecological degradation of the sludge deposited at the bottom, a vertical flow sand settling device can realize the sludge-water separation effect, namely when the water level in a well body rises, sludge at the bottom of the well is difficult to float up to the pipe orifice of a water receiving pipe 7 under the blocking of the sediment interception component 5 and the anti-sludge resuspension component 6, and precipitated clear water enters a drainage pipe network along with the water receiving pipe 7 to reduce particles such as sediment entering a municipal water body, thereby playing a role in separating mud from water. This device still can consider to set up the facility of permeating water in microbial packing layer bottom, can hold back great pollutant to realize the function of supply groundwater through rainwater infiltration, it needs to explain, still can demolish from collecting well body 11 down for guarantee microbial packing layer's utilization efficiency after using a period on with upper collection well body 10, thereby be convenient for clear up remaining mud on the microbial packing layer, improve greatly and cut dirty effect.
This high-efficient dirt device of cutting of device can be guaranteeing under the prerequisite that the inlet for stom water collected ground rainwater rapidly effectively, adopt the inlet for stom water cut dirty string basket technique in order to hold back the great pollutant in the rainwater runoff, and set up the vertical flow desilting device in the inlet for stom water lower part in order to reach the desilting, the effect of rainwater infiltration, realize the dual holding back of particulate matters such as great solid pollutant and silt, at rainwater grate 1, the vertical flow desilting device, under the little biological packing layer combined action in bottom, not only can effectively hold back the big solid pollutant in the rainwater runoff, also can get rid of the small-particle footpath pollutant in the runoff, reduce particulate matters such as silt that the entering pipe network system got into urban water, reduce the pressure of rainwater pipe network system, simultaneously can also be with the ecological degradation of the mud that deposits in the bottom. The device is easy to install, convenient to clean and maintain and does not influence the flood prevention function of the rainwater inlet.
Further, in the present invention, it is also considered that the upper collection well 10 has a cubic structure which penetrates vertically, and the lower collection well 11 has a cubic structure which is open at the upper part and closed at the lower end. The collecting well body in this device is including can dismantling from top to bottom and peg graft in the integrative last collecting well body 10, the lower collecting well body 11, belongs to removable apparatus, and the equipment is convenient, makes things convenient for the later stage to the maintenance, change and the clearance of equipment, also makes things convenient for the later stage to take out the vertical flow desilting device in order to clear up and maintain. It should be noted that the structure of the upper collecting well body 10 and the lower collecting well body 11 may be, but not limited to, a cubic structure, and the structure type such as a column shape, a prism shape, etc. may also be considered, and the structure and specification of the well body may be determined according to the solid carried matter and the rainwater runoff strength, etc. of the place where the well body is used.
Furthermore, it is also considered in the present invention that the reflecting component 4 includes a first reflecting plate 41 and a second reflecting plate 42 which are symmetrically arranged, upper edges of the first reflecting plate 41 and the second reflecting plate 42 are respectively fixed to an inner wall of the upper collecting well 10, and an inclination angle between the first reflecting plate 41 and the upper collecting well 10 and an inclination angle between the second reflecting plate 42 and the upper collecting well 10 are 30-60 °. The reflecting component 4 is positioned below the water collecting pipe 7, and the first reflecting plate 41 and the second reflecting plate 42 in the reflecting component 4 can reflect water in the water collecting pipe or rainwater flowing downwards from the opening of the collecting well body, so that not only can the rainwater impact energy be reduced, but also the sludge can conveniently sink along the reflecting plates, and then the effect of primarily separating mud from water is achieved.
Still further, it is also considered in the present invention that the nozzle of the water collecting pipe 7 is located above the reflecting member 4, the nozzle of the water collecting pipe 7 is installed on the sidewall of the upper collecting well body 10, and the distance between the nozzle of the water collecting pipe 7 and the first reflecting plate 41 and the second reflecting plate 42 of the reflecting member 4 is 0.25-0.5 m. The pipe orifice of the water collecting pipe 7 is positioned above the reflecting component 4, when the rainfall is large, rainwater can be guaranteed to directly enter a drainage system through the water collecting pipe 7, so that the flood prevention function of the rainwater port cannot be influenced, when the rainfall is small, the water level in the collecting well body rises along with the increase of the ground rainwater collection amount, and clear water precipitated by the vertical flow desilting device also enters a drainage pipe network along with the water collecting pipe 7.
Furthermore, it can be considered in the present invention that the silt intercepting part 5 is a rectangular pyramid structure defined by four first side plates, the anti-sludge resuspension part 6 is an inverted rectangular frustum pyramid structure defined by four second side plates and communicated up and down, an upper edge of the second side plate in the anti-sludge resuspension part 6 is fixedly connected to an inner wall of the upper collecting well body 10, and four corner ends of a lower portion of the silt intercepting part 5 are respectively fixedly connected to an inner wall of the second side plate through a support body. The silt interception component 5 is of a rectangular pyramid structure and is formed by enclosing four first side plates, the four first side plates can play a role of downwards guiding rainwater flowing downwards from the reflection component, the lower part of the silt interception component is of a hollow structure and can also play a role of preventing silt from flowing upwards and reversely, four corner ends of the lower part of the silt interception component 5 are fixedly connected with the inner wall of the second side plate through supporting bodies respectively, the silt interception component 5 and the reverse sludge resuspension component 6 can be assembled into a whole through the supporting bodies, silt can flow into the position below the reverse sludge resuspension component 6 through a gap between the silt interception component 5 and the reverse sludge resuspension component 6, muddy water flowing downwards from the silt interception component 5 can flow into the position below the microorganism packing layer below the reverse sludge resuspension component 6 through a gap between the silt interception component 5 and the reverse sludge resuspension component 6, and the reverse sludge resuspension component 6 is of an inverted pyramid structure enclosed by the four, the mud and sand below the mud-water separation device can be prevented from flowing upwards and reversely, namely when the water level in the well body rises, the mud at the bottom of the well is difficult to float to the pipe orifice of the water collecting pipe 7 under the blocking of the mud-water retention component 5 and the anti-mud resuspension component 6, and most of the mud is deposited at the bottom of the well body to play a role in mud-water separation.
Still further, it is also contemplated in the present invention that the filter layer 3 is a geotextile, or a nylon mesh. The side wall of the rain grate 1 is uniformly provided with a metal grid net to form a hanging basket overflow port 2, the lower part of the side wall and the bottom wall of the rain grate 1 are paved with filter layers 3, the specifications of the upper part and the lower part of the rain grate 1 can be determined according to solid carried objects, rainwater runoff strength and the like of a used place, water around a collecting well body can permeate into the well body through the hanging basket overflow port 2, wherein the gaps of the metal grid net on the rain grate 1 are not too small and too sparse, enough overflow holes are needed to be formed, the influence on water passing capacity during strong rainfall is avoided, the filter layers 3 at the lower part and the bottom of the rain grate 1 can be not limited to geotextile, nylon net or special woven bag, and suitable materials can be developed, designed or selected according to specific water quality objects and requirements according to different conditions of various places, and the filter layers 3 are used for intercepting large solid impurities and part of fine pollutants in rainwater runoff, It should be noted that the gaps of the filter layer 3 should not be too small to prevent blockage and influence the water permeability of solid contaminants such as silt.
Furthermore, it is also considered in the present invention that the microbial packing layer is a sand settling tank 8 and a packing tank 9 which are arranged up and down, the sand settling tank 8 is filled with steel slag, zeolite, or starch slag, and the packing tank 9 is filled with microbial packing. The microbial filler layer is convenient for biodegradation of the precipitated sludge and the elutriated sludge.
Based on the device, the invention also provides an efficient sewage interception operation method for the urban road gutter inlet, which comprises the following steps:
the method comprises the following steps: rainwater and pollutants carried by the rainwater flow into the rainwater grate 1 in the collecting well body through the upper end opening of the collecting well body, the rainwater is purified when passing through the rainwater grate 1, the pollutants are intercepted, and the rainwater flows downwards to the vertical flow sand settling device;
step two: the water collecting pipe 7 is arranged above the vertical flow sand settling device, and when the rainfall is large, rainwater can directly enter the drainage system through the water collecting pipe 7;
step three: when rainwater flows to the vertical flow sand settling device, the first reflecting plate 41 and the second reflecting plate 42 in the reflecting part 4 can reflect rainwater flowing downwards, rainwater impact energy is reduced, sediment in the rainwater sinks along the gravity of the first reflecting plate 41 and the second reflecting plate 42, the sediment intercepting part 5 plays a role in guiding the rainwater and preventing the sediment from flowing upwards and reversely, and the sediment precipitated by the sediment intercepting part 5 flows below the anti-sludge resuspension part 6 through a gap between the sediment intercepting part 5 and the anti-sludge resuspension part 6 and sinks to a microbial filler layer below the anti-sludge resuspension part 6;
step four: the filler in the microbial filler layer is used for ecologically degrading the sediment deposited at the bottom;
step five: rainwater continuously flows into the collecting well body from the upper end opening of the collecting well body, the water level of the rainwater rises in the collecting well body, sediment at the bottom of the well is difficult to float upwards to the pipe orifice of the water collecting pipe 7 under the blocking of the sludge anti-resuspension component 6, the sediment interception component 5 and the reflection component 4 along with the rising of the water level of the rainwater, and settled clean water enters a drainage pipe network along with the water collecting pipe 7;
step six: after long-term operation, the upper collecting well body 10 can be dismantled from the lower collecting well body 11, and the sediment remained on the microorganism packing layer is removed.
In conclusion, the invention provides the urban road gutter inlet efficient sewage interception device and the sewage interception operation method, which combine the gutter inlet sewage interception modification technology, the vertical flow sand settling device and the bottom microorganism packing layer, realize double interception of particles such as large solid pollutants, silt and the like, and can degrade sludge deposited at the bottom ecologically.
Claims (7)
1. The utility model provides a dirty device is cut to urban road inlet for stom water high efficiency, includes the collection well body, locates receipts water pipe (7) on the collection well body lateral wall, its characterized in that:
the collecting well body comprises an upper collecting well body (10) and a lower collecting well body (11) which are detachably spliced into a whole from top to bottom, the upper collecting well body (10) is of a vertically through structure, the lower collecting well body (11) is of a structure with an opening at the upper end and a closed lower end, a microorganism packing layer is arranged at the bottom of the lower collecting well body (11), and the microorganism packing layer is a sand settling groove (8) and a packing groove (9) which are arranged from top to bottom;
the upper end of the upper collecting well body (10) is provided with a rainwater grate (1), a vertical flow sand settling device is arranged in the upper collecting well body (10), the rainwater grate (1) is of a hanging basket type structure, the side wall of the rainwater grate (1) is uniformly provided with a metal lattice net to form a hanging basket overflow port (2), the rainwater grate (1) is of an upper-lower two-section structure, the lower part of the side wall and the upper part of the bottom wall of the rainwater grate (1) are paved with filter layers (3), the vertical flow sand settling device comprises a reflecting part (4), a silt interception part (5) and an anti-sludge resuspension part (6) which are arranged from top to bottom, the reflecting part (4) is of an inverted splayed structure, the silt intercepting part (5) is of a rectangular pyramid structure, the anti-sludge resuspension component (6) is of an inverted quadrangular frustum pyramid structure, and the orifice of the water collecting pipe (7) is positioned above the reflection component (4);
the silt interception component (5) is of a rectangular pyramid structure formed by encircling four first side plates, the sludge anti-resuspension component (6) is of an inverted rectangular frustum pyramid structure formed by encircling four second side plates, the upper edge of the second side plate in the sludge anti-resuspension component (6) is fixedly connected with the inner wall of the upper collection well body (10), and the four corner ends of the lower part of the silt interception component (5) are fixedly connected with the inner wall of the second side plate through supporting bodies respectively; the sediment precipitated by the sediment interception component (5) flows below the anti-sludge resuspension component (6) through the gap between the sediment interception component (5) and the anti-sludge resuspension component (6).
2. The urban road gutter inlet efficient sewage interception device according to claim 1, characterized in that: the upper collecting well body (10) is of a cubic structure which is communicated up and down, and the lower collecting well body (11) is of a cubic structure which is provided with an upper opening and a lower end which is closed.
3. The urban road gutter inlet high-efficiency sewage interception device according to claim 1 or 2, characterized in that: the reflecting component (4) comprises a first reflecting plate (41) and a second reflecting plate (42) which are symmetrically arranged, the upper edges of the first reflecting plate (41) and the second reflecting plate (42) are fixedly connected with the inner wall of the upper collecting well body (10) respectively, and the inclination angle between the first reflecting plate (41) and the upper collecting well body (10) is 30-60 degrees.
4. The efficient sewage interception device for the urban road gutter inlet according to claim 3, characterized in that: the pipe orifice of the water collecting pipe (7) is arranged on the side wall of the upper collecting well body (10), and the distance between the pipe orifice of the water collecting pipe (7) and the first reflecting plate (41) and the second reflecting plate (42) in the reflecting component (4) is 0.25-0.5 m.
5. The urban road gutter inlet efficient sewage interception device according to claim 1, characterized in that: the filter layer (3) is made of geotextile or nylon net.
6. The urban road gutter inlet efficient sewage interception device according to claim 1, characterized in that: the sand settling tank (8) is filled with steel slag, zeolite or starch slag, and the filler tank (9) is filled with microbial filler.
7. An efficient sewage interception operation method for urban road gutter inlet is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: rainwater and pollutants carried by the rainwater flow into a rainwater grate (1) in a collecting well body through an opening at the upper end of the collecting well body, the rainwater is purified when passing through the rainwater grate (1), the pollutants are intercepted, the rainwater flows downwards to a vertical flow sand settling device, the collecting well body comprises an upper collecting well body (10) and a lower collecting well body (11) which are detachably spliced into a whole, and the vertical flow sand settling device comprises a reflecting part (4), a silt intercepting part (5) and an anti-sludge resuspension part (6) which are arranged from top to bottom;
step two: the water collecting pipe (7) is arranged above the vertical flow sand settling device, and when the rainfall is large, rainwater can directly enter a drainage system through the water collecting pipe (7);
step three: when rainwater flows to the vertical flow sand settling device, the reflecting part (4) comprises a first reflecting plate (41) and a second reflecting plate (42) which are symmetrically arranged, the upper edges of the first reflecting plate (41) and the second reflecting plate (42) are fixedly connected with the inner wall of the upper collecting well body (10) respectively, the first reflecting plate (41) and the second reflecting plate (42) in the reflecting part (4) can reflect rainwater flowing downwards to reduce rainwater impact energy, sediment in the rainwater sinks along the gravity of the first reflecting plate (41) and the second reflecting plate (42), the sediment intercepting part (5) is of a rectangular pyramid structure formed by four first side plates, the anti-sludge resuspension part (6) is of an inverted rectangular frustum pyramid structure formed by four second side plates, the upper edge of the second side plate in the anti-sludge resuspension part (6) is fixedly connected with the inner wall of the upper collecting well body (10), the four corner ends of the lower part of the silt intercepting part (5) are fixedly connected with the inner wall of the second side plate through supporting bodies respectively, the silt intercepting part (5) plays a role in guiding rainwater and preventing upward counter flow of sediments, the sediments precipitated by the silt intercepting part (5) flow below the anti-sludge resuspension part (6) through a gap between the silt intercepting part (5) and the anti-sludge resuspension part (6) and sink into a microbial packing layer below the anti-sludge resuspension part (6);
step four: the filler in the microbial filler layer is used for ecologically degrading the sediment deposited at the bottom;
step five: rainwater continuously flows into the collecting well body from the opening at the upper end of the collecting well body, the water level of the rainwater rises in the collecting well body, sediment at the bottom of the well is difficult to float up to the pipe orifice of the water collecting pipe (7) under the blocking of the sludge anti-resuspension component (6), the sediment interception component (5) and the reflection component (4) along with the rising of the water level of the rainwater, and settled clean water enters a drainage pipe network along with the water collecting pipe (7);
step six: after long-term operation, the upper collecting well body (10) can be dismantled from the lower collecting well body (11), and the sediment remained on the microorganism packing layer is removed.
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| CN201910136964.1A CN109797839B (en) | 2019-02-25 | 2019-02-25 | Urban road gutter inlet efficient sewage interception device and sewage interception operation method |
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| CN110565783A (en) * | 2019-09-29 | 2019-12-13 | 南昌大学 | Centrifugal type anti-blocking rainwater inlet |
| CN112726790B (en) * | 2020-12-29 | 2022-06-24 | 宁夏厚德环保科技有限公司 | Rainwater sewage interception device based on synchronous sewage interception and treatment and sewage interception method thereof |
| CN113107074B (en) * | 2021-05-08 | 2024-11-12 | 上海浦林城建工程有限公司 | A multi-stage dust and sand interception device for a flat single-grate rainwater outlet |
| CN113800642B (en) * | 2021-09-27 | 2023-06-16 | 浙江清天地环境工程有限公司 | Ecological interception ditch for farmland runoff pollution |
| CN114349190B (en) * | 2021-12-06 | 2023-05-23 | 天津一冶建设工程有限公司 | Sponge urban rainwater purification structure |
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| US5849181A (en) * | 1997-06-02 | 1998-12-15 | Stormceptor Corporation | Catch basin |
| US6062767A (en) * | 1998-02-09 | 2000-05-16 | Kizhnerman; Samuil | Storm water receptor system |
| KR101145050B1 (en) * | 2010-05-17 | 2012-05-11 | 장기문 | Initial rainwater treatment rainwater separator with oil separation function |
| KR20140081280A (en) * | 2012-12-21 | 2014-07-01 | 이성규 | Manhole having trash collecting apparatus |
| US9315981B2 (en) * | 2013-08-14 | 2016-04-19 | Hydro International Plc | Separator module for a stormwater gully chamber |
| CN104746634B (en) * | 2013-12-27 | 2017-01-18 | 上海勘测设计研究院 | Runoff purification well |
| EP3436177A4 (en) * | 2016-03-31 | 2019-11-20 | Frog Creek Partners, LLC | REMOVABLE PUMP FILTER ELEMENT AND LIFTING APPARATUS |
| CN107476412A (en) * | 2017-08-10 | 2017-12-15 | 北京泰宁科创雨水利用技术股份有限公司 | A kind of inlet for stom water filtering cuts dirty basket and application method |
| CN108643325B (en) * | 2018-06-01 | 2020-11-10 | 安徽智时代科技有限公司 | Municipal drainage system |
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