JP4963448B2 - Road drainage tank for accident prevention and purification - Google Patents

Description

  The present invention is to purify water by removing impurities and oil from wastewater mixed with impurities such as garbage collected from road surfaces such as general roads and expressways, and to purify the water separately. This relates to a road surface wastewater treatment tank.

  General roads and expressway roads are subject to various impurities such as earth and sand, vegetation, dust, tire scraps, and oils such as oil due to increased traffic volume, increased vehicle size, weight, etc. A lot of various impurities such as are included. In addition, a large amount of oil may leak to the road surface due to an accident or the like. If these things are drained as they are, they flow into nearby paddy fields, ponds, etc. and cause deterioration of water quality.

  As shown in Japanese Patent No. 3354126, the applicant installs the inflow tank and the separation tank in a staircase pattern along the slope of the slope, close to the slope drainage path, and arranges them mutually. A vertical oil-water treatment tank that removes oil by connecting with a water pipe was proposed.

  However, these inflow tanks and separation tanks are installed separately in the construction site while maintaining a horizontal stage, and then connected to each other. In addition, each is made of a precast concrete block, so it is heavy, making it difficult to lift and install, and construction sites where heavy equipment can be placed to install them. There was also the inconvenience that otherwise it could not be handled.

Furthermore, there was a risk of water leaking from the concrete surface after installation. Also, wastewater mixed with various impurities and capacity overflow when flowing in large quantities were generated, and there was a lack of means for rectifying the inflow speed at that time.
Japanese Patent No. 3354126

  The present invention has been made to solve the above problems, and is an integrated inflow tank and separation tank that become a road surface wastewater treatment tank, and removes impurities from the wastewater that has entered the treatment tank. , Increase the capacity in the tank, position the inlet and outlet of the drainage to be almost diagonal so that the flow path is long, and provide some partition plates to drain the drainage The oil component is reliably separated while rectifying, and furthermore, it is possible to temporarily recover the oil that has flowed out to the road surface due to an accident, and at the same time, it can be purified, and using FRP material by weight, can be larger, also possible that the corresponding at any location, including the location can not be placed easily and to be and heavy equipment and construction, the construction period for delivery and installation Shorten It is intended to provide the possibility and the road wastewater treatment tank.

  The present invention solves the above-mentioned problems, and the FRP road surface is formed by forming a cube surrounded by a side wall and a bottom portion into three tanks of an inflow tank, a first separation tank, and a second separation tank by two dam plates. In the wastewater treatment tank, the inflow tank is provided with an inlet serving as an inlet for road surface drainage connected to the drainage groove on the upper side wall on the upstream side, and a first outlet on the first dam plate at positions that are substantially diagonal. A wave screen also serving as a first partition plate is provided between the inflow port and the first outflow port, and the first separation tank is a second to the first outflow port provided in the first dam plate. 2 A second outlet is provided at a position substantially diagonal to the barrier plate, a second partition plate is provided between the first outlet and the second outlet, and the second separation tank 2 A third outlet is provided in the upper part of the position that is substantially diagonal to the downstream side wall with respect to the second outlet provided in the dam plate, and the inner side of the third outlet is the Connected to the box-type channel box having an opening at the bottom which is formed along the wall, the outer features a road wastewater treatment tank for the purpose of purifying an accident measures formed by connecting the drain pipe.

  In addition, the wave screen is formed with a number of longitudinal bar-like bodies spaced from each other, and a plate-like first partition plate is provided on the upper part thereof, and spans between the upstream side wall and the first dam plate. It features a road surface wastewater treatment tank for the purpose of accident prevention and purification.

  Further, the wave screen is characterized by a road surface wastewater treatment tank that is detachably or integrally bridged between the upstream side wall and the first dam plate and is intended for accident countermeasures and purification.

  In addition, the second partition plate is a plate-shaped drainage treatment tank for the purpose of accident prevention and purification that spans between the first dam plate and the second dam plate so that an opening is formed on the bottom side. And

  In the present invention, drainage from the road surface containing various contaminants such as earth and sand, vegetation, dust, tire scrap, etc., oil content, etc., and suspended matter such as impurities and oil, and sediment such as earth and sand, etc., by one road surface drainage treatment tank. It was possible to separate and efficiently discharge only purified water separately.

  Further, the road surface wastewater treatment tank has a flow path in the tank by arranging the weir plate and the partition plate at appropriate positions and arranging the inlet and outlet of the road surface drainage at positions almost diagonal. The separation process can be efficiently achieved in one treatment tank.

  Furthermore, since the road surface drainage treatment tank is made of FRP, the weight can be reduced, the size can be increased, and the transportation and installation can be facilitated. It is possible to install it in various places such as long slopes with no slopes, places where private land and forests are close, or at the base of bridges where construction machines cannot be used, and it is possible to greatly shorten the construction period .

  Moreover, since it is made of FRP, it is excellent in strength, weather resistance, heat resistance, and chemical resistance, and there is no risk of water leakage, rusting or rotting.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The road surface wastewater treatment tank 1 for the purpose of accident countermeasures and purification according to the present invention is made of FRP and is reduced in weight, and collects road surface wastewater collected in gutters and trouts from road surfaces such as general roads and expressways. In order to purify them, they are installed on the slope of the road, the base of the bridge of the road, or the road side surface on a flat ground.

  The drainage from the road surface includes various impurities such as earth and sand, dust, tire scraps, and oils such as oil. In addition, a large amount of oil may flow out on the road surface due to an accident or the like. The road surface wastewater treatment tank 1 not only removes the above-mentioned various impurities but also removes a large amount of oil and treats wastewater mixed with impurities as purified water.

  As shown in FIG. 1, the road surface wastewater treatment tank 1 is formed as a cube surrounded by a side wall 6 of a bottomed 5 composed of an inflow tank 2, a first separation tank 3, and a second separation tank 4.

  As shown in FIG. 2, the inflow tank 2 is formed with inflow ports 7 and 7 ′ that serve as receiving ports for receiving the road surface drainage on the upper side of the side wall 6 that is upstream of the drainage. The inlets 7, 7 ′ are provided with a notch on either the left or right of the upper side of the side wall 6 or on the upper side of the other side wall 6 ′, and a U-shaped protruding frame 8 is formed as necessary. The positions of the inlets 7 and 7 ′ can be appropriately changed depending on where the road surface wastewater treatment tank 1 is installed. Drainage from a predetermined range of road surface is collected in a side groove or the like, and flows into the inlets 7 and 7 '. It should be sized to accept the wastewater discharged from the road surface during heavy rain.

  As shown in FIGS. 3 and 4, the inflow tank 2 includes a wave screen 9 in which a large number of rod-like bodies are arranged side by side so as to be divided across the inflow tank 2, and a first screen is provided on the top. A partition plate 10 is provided. The rod-like body of the wave screen 9 shown in the figure is fixed so as to change its protruding length. The length may be adjusted or selected as appropriate, or may be detachable. Due to this difference in length, large and small impurities can be separated and captured. As shown in FIG. 4, these are provided so as to straddle between the side wall 6 and the first barrier plate 11.

  The wave-breaking screen 9 made up of a large number of rod-like bodies can remove impurities of a certain size among impurities such as vegetation, dust and tire scraps contained in the road surface drainage. The inflow tank 2 is set up so as to rise from the bottom 5 side with a predetermined interval, and is installed so that the upper end of the first partition plate 10 on the upper side is as high as the side wall 6. The wave screen 9 and the first partition plate 10 can be detachably installed on the side wall 6 and the first barrier plate 11 via an angle member as shown in FIG. It is also possible to manufacture it integrally.

  The first partition plate 10 has a shape in which the upper side of the inflow tank 2 is closed by a plate-like body, and the first partition plate 10 relaxes the flow velocity of the wastewater flowing into the inflow tank 2 and suppresses the turbulent flow. In addition, it is possible to prevent the oil component floating from the drainage and the small impurities that could not be captured by the wave screen 9 from flowing into the first separation tank 3 side.

  The first dam plate 11 partitions the inflow tank 2 and the first separation tank 3, and a first outlet 12 is provided on the upper portion of the first dam plate 11 to remove oil and considerable impurities. The drainage is discharged to the first separation tank 3. The first outlet 12 is formed at a position on the opposite side which is substantially diagonal to the inlets 7 and 7 ', thereby extending the drainage flow path.

  As described above, the inflow tank 2 has the side walls 6, 6 'wave-proof screen 9, the first partition plate 10, the first dam plate 11, and the inlets 7, 7'. By providing the first outlet 12 at a location that is located almost diagonally in the inflow tank 2, rectification can be achieved, and at the same time, floating substances such as oil and impurities can be separated to a considerable extent.

  The first separation tank 3 is a tank that mainly separates oil. The first separation tank 3 is divided into two parts by dividing the first separation tank 3 between the first barrier plate 11 and the second barrier plate 13. A plate 14 is provided. The upper part of the second partition plate 14 is slightly lower than the height of the side wall 6, and the lower side is open from the bottom to a certain height. The position and height of the opening can be appropriately selected as necessary.

  Further, the second barrier plate 13 forms a second outlet 15 on the lower side of a position substantially diagonal to the first outlet 12 provided in the first barrier plate 11. The position and height of the second outlet 15 can be appropriately selected as necessary.

  In the first separation tank 3, the first outlet 12 and the second outlet 15 serving as drainage channels are located on the upper corner and the latter is located on the other corner on the lower side. Therefore, the drainage path can be lengthened and rectification can be promoted. In addition, the rectified road surface drainage can float oil and other floating substances on the top, and can further promote separation from purified water.

  Drainage flows into the second separation tank 4 from the second outlet 15 of the second dam plate 13, but at this point in time, a lot of suspended matter including a large amount of oil and the like is in a state of purified water that has been almost removed. Yes. In order to further remove oil, the second outlet 15 of the second dam plate 13 also opens one corner of the lower part on the bottom 5 side to prevent the oil from flowing into the second separation tank 4. Accordingly, the drainage flow path in the second separation tank 4 is only on the bottom 5 side, and the wastewater in the tank is prevented from being stirred, and the remaining oil and floating matter are separated and floated upward. Become.

  On the side walls 6 and 6 ′ located on the downstream side of the second separation tank 4, a box-type flow path box 16 having the lower end portion and the upper side surface portion as open portions is attached to the inside of the side wall 6 and 6 ′ in advance at a factory or the like as necessary. The purified water, which is fixed and from which suspended matter such as oil has been completely removed, is introduced into drains 17 and 17 'formed at one corner of the upper side of the side walls 6 and 6'. Drainage is introduced into drainage ports 17, 17 ′ connected to the open portion of the upper side surface portion of the flow path box 16, and discharged to a downstream side groove or the like via the drainage pipe 18. The positions of the drain ports 17 and 17 ′ can be appropriately changed depending on the place where the road surface drainage treatment tank 1 is installed, as shown in FIG. 1.

  FIG. 5 is a plan view of the road surface drainage treatment tank 1 corresponding to FIGS. 1, 2, and 4. As shown in FIG. 6, the positions of the inlet 7 ′ and the drain 17 ′ are on the side wall 6 ′. It is possible to change. The inlets 7 and 7 'and the outlets 17 and 17' are the same as the inlet 7 and the outlet 17 'or the inlet 7' and the outlet 17 in combination with those shown in FIGS. Depending on the installation location, it can be changed as appropriate.

  Substances with large specific gravity such as SS and earth and sand will accumulate as sediment in the inflow tank 2 and the bottoms 5 of the first and second separation tanks 3 and 4, and the sediment accumulated in these tanks will be vacuum, etc. Will be removed periodically.

  Further, the oil components separated and floated on the upper part of the inflow tank 2 and the first and second separation tanks 3 and 4 are removed by appropriate means such as an oil adsorption mat and vacuum.

The partial cross section perspective view of the road surface wastewater treatment tank of the present invention. The side sectional view of the road surface drainage treatment tank of the present invention. (A) Front view of wave screen, (b) Side sectional view of wave screen, (c) Side view of angle member for attaching wave screen to side wall and first dam plate. Front sectional drawing of the road surface wastewater treatment tank of this invention. The top view of the road surface wastewater treatment tank of this invention. The top view of the other Example of the road surface waste-water-treatment tank of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road surface wastewater treatment tank 2 Inflow tank 3 1st separation tank 4 2nd separation tank 5 Bottom 6, 6 'Side wall 7, 7' Inlet 8 Protruding frame 9 Wave breaker screen 10 First partition plate 11 First dam plate 12 First 1 outflow port 13 second dam plate 14 second partition plate 15 second outflow port 16 flow path boxes 17, 17 ′ drain port 18 drain pipe

Claims (4)

  In the FRP road surface wastewater treatment tank formed of three cubes surrounded by the side wall and the bottom part in three tanks of the inflow tank, the first separation tank and the second separation tank by the two dam plates, the inflow tank is on the upstream side. An inflow port serving as a road surface drainage receiving port connected to the drainage groove is provided at the upper side of the side wall, and a first outflow port is provided in the first dam plate at positions substantially diagonal to each other, between the inflow port and the first outflow port. Is provided with a wave-proof screen that also serves as a first partition plate, and the first separation tank is located at a position that is substantially diagonal to the second dam plate with respect to the first outlet provided in the first dam plate. An outlet is provided, a second partition plate is provided between the first outlet and the second outlet, and the second separation tank is connected to the second outlet provided in the second barrier plate. A third outlet is provided in the upper part of the position that is substantially diagonal to the downstream side wall, and an opening is provided in the lower part formed along the side wall inside the third outlet. Connected to the box-type channel box, road wastewater treatment tank for the purpose of accident countermeasures purification, characterized in that the outer is coupled with the drain pipe.   The breakwater screen is formed with a number of vertical bar-like bodies spaced apart from each other, and a plate-like first partition plate is provided on the upper part, spanning between the upstream side wall and the first dam plate. The road surface wastewater treatment tank for the purpose of accident countermeasures and purification according to claim 1.   The road surface wastewater treatment tank for the purpose of accident countermeasures and purification according to claim 2, wherein the wave screen is detachably or integrally bridged between the upstream side wall and the first dam plate.   4. Accident countermeasures and purification according to claim 1, wherein the second partition plate is plate-shaped and is bridged between the first dam plate and the second dam plate so that an opening is formed on the bottom side. A road surface wastewater treatment tank.