Improved aquarium tank

Abstract

To provide a water tank which can deal with the increase of the treatment amount of muddy water.SOLUTION: A water tank comprises: a water-collecting trough having a plurality of notch parts at an upper edge part in a state of being in close contact with and / or separated from a side wall where the drain outlet of the water tank is disposed; and a rush body adjacent to the front surface of the water-collecting trough and made of a fibrous aggregate. A plurality of water stream inclination films are stretched in parallel with the water-collecting trough between a tank side wall where a water intake port is disposed and the rush body.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an improved water tank used for treating muddy water at construction sites and the like. [Background technology]

[0002] When construction work is carried out in urban areas, muddy water is generated during construction, and water tanks are used to treat and clarify this muddy water. The capacity of these water tanks is generally 1 to 40 m 3 Typical structures of aquarium tanks include a rectangular tank 1 with a muddy water inlet 2 on one side and a drain outlet 3 on the other, as shown in Figure 1, and a notched tank with a notched partition wall 5 with a V-shaped notch 4 near the drain outlet 3 inside the rectangular tank 1, as shown in Figure 2. Furthermore, these water tanks are designed so that any contaminants that accumulate at the bottom of the tanks during the treatment of muddy water are removed and disposed of as needed. The capacity of these conventional water tanks was determined based on the planned amount of muddy water to be treated, but in today's small construction sites, space constraints make it difficult to change water tanks, especially if there is a change in the treatment volume, such as a significant increase.

[0003] Various methods for treating such muddy water have been proposed. For example, in the treatment of polluted water generated within a pollution prevention framework, a raw water treatment method is known in which polluted water is taken in, a partitioned small-scale retention area is created, and a flocculant is added to the retention area (Patent Document 1); a sedimentation treatment facility that uses multiple settling tanks simultaneously to clarify turbid water, and when at least one settling tank is out of service, a continuous treatment operation method for turbid water is performed by extending multiple streamer membranes, each connected with a gap between adjacent streamer membranes, in at least one of the other settling tanks in use, so that the amount of turbid water can be treated without decreasing (Patent Document 2); a settling device having inlet and outlet sections for polluted water, characterized in that a rush body is provided to shield the outlet section (Patent Document 3); and a water intake method for a settling device in which a girder with a cross-sectional shape of various shapes, such as semicircular or obovate, is provided near the midpoint between the inlet and outlet of the clarifier, with part of it submerged below the water surface, and water is taken from the surface flow section near the midpoint between the raw water inlet and outlet (Patent Document 4). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-274161 [Patent Document 2] JP 2014-151297 A [Patent Document 3] JP 2017-74539 A [Patent Document 4] JP 2019-89025 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the inventors have conducted extensive research into a compact water tank with high processing capacity that can process muddy water even when the amount of processing water changes without having to replace the water tank, and have completed the present invention. [Means for solving the problem]

[0006] That is, the present invention is an aquarium tank in which a water collection trough having a plurality of notches on its upper edge is provided in close contact with and / or spaced apart from the side wall of the tank on which the drain outlet is provided, a rush body made of a fibrous aggregate is provided adjacent to the front surface (intake side) of the water collection trough, and multiple water flow gradient membranes are stretched parallel to the water collection trough between the tank side wall on which the intake is provided and the rush body. [Effects of the Invention]

[0007] The water tank of the present invention has multiple notches in the collection trough, which allows the water flow to diffuse and slow down, eliminating dead space in the tank and increasing the tank's efficiency. The diversification of flow lines improves water collection and drainage, promoting the settling of pollutants. Furthermore, a single small tank can accommodate fluctuations in the amount of muddy water to be treated, which has the advantage of not affecting construction schedules. Furthermore, existing tanks can be easily modified to become the tank of the present invention. [Brief explanation of the drawings]

[0008] [Figure 1] Perspective view of a conventional aquarium tank [Figure 2] FIG. 1 is a perspective view of a conventional aquarium tank showing another embodiment. [Figure 3] A perspective view of the water tank of the present invention. [Figure 4] FIG. 10 is a cross-sectional view showing another embodiment of the water collecting trough of the present invention. [Figure 5] FIG. 10 is a cross-sectional view of another embodiment of the spaced apart water collection troughs of the present invention. [Figure 6] 1 is a front view of a rush body according to the present invention; [Figure 7] A perspective view of a membrane-type rush body with a float [Figure 8] 10 is a cross-sectional view of a membrane-shaped rush body with a float, showing another embodiment. [Figure 9] Front view of connected water flow gradient membranes [Figure 10] 1 is a perspective view of a water tank having a water channel on the upper edge of the water tank of the present invention; [Figure 11] FIG. 10 is a perspective view of an aquarium tank having a water channel provided on the upper edge of the aquarium tank, showing another embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0009] Next, the present invention will be described with reference to the drawings, but the present invention is not limited to the following description. FIG. 3 is a perspective view showing one embodiment of the water tank of the present invention. The water tank 1 has a muddy water intake 2 on one side and a discharge outlet 3 on the other side. A water collecting trough 5 having a plurality of notches 4 is provided on the side wall of the discharge outlet 3 and / or at a position upstream of the discharge outlet 3, spaced apart.

[0010] The water collection trough 5', which is provided at a distance from the side wall of the drain outlet 3, is provided with a drain outlet (not shown) for discharging the collected and clarified treated water directly out of the water tank. In another embodiment, the water collection trough 5' and the water collection trough 5 are connected by a gutter (not shown), and the treated water collected and clarified in the water collection trough 5' flows into the water collection trough 5, and is discharged out of the water tank from the drain outlet 3 together with the treated water collected in the water collection trough 5. Furthermore, as shown in Figure 4, it is also preferable to connect the bottom of the water collection trough 5' and the water collection trough 5 with a pipe, so that the treated water collected in the water collection trough 5' flows into the water collection trough 5, and is discharged out of the water tank from the drain outlet 3 together with the treated water collected in the water collection trough 5 and clarified. Furthermore, in the case of the water collection trough 5, which is provided in close contact with the side wall on which the outlet 3 is provided, the clarified treated water is directly discharged to the outside of the system from the outlet 3. In another embodiment, in the case of the water collection trough 5', which is provided away from the side wall on which the outlet 3 is provided, notches can be provided on two surfaces of the water collection surface, on the intake 2 side and on the outlet 3 side of the water collection trough 5, which is preferable because this reduces the speed of the overflowing treated water.

[0011] By providing a plurality of notches 4 in the water collecting troughs 5 and 5', the speed of the treated water overflowing the notches 4 is slowed down, further improving the clarification effect. It is preferable to provide the notches 4 over the entire upper edge of the water collecting troughs 5 and 5'. The shape of the notch 4 of the water collecting trough 5 and the water collecting trough 5' can be various shapes such as a conventional V-shape, an upwardly open U-shape, a semicircle, etc. An improved opening can be provided by providing multiple openings between the side walls of the water collecting trough 5 and the water collecting trough 5' and providing doors that can slide laterally at the openings (not shown). The doors of these openings are connected to a slide rod provided at the top, and by moving the slide rod left and right, all the doors can be moved simultaneously to open and close the openings. Furthermore, it is preferable that the water collecting trough 5' has a lower edge wall 6 provided at the bottom of the water collecting trough 5' as shown in Fig. 5. The attachment position of the lower edge wall 6 is not particularly limited.

[0012] Furthermore, in the present invention, rush bodies 7 (hereinafter referred to as rush bodies) made of fibrous water collecting material are provided adjacent to and in parallel with the water collecting troughs 5 and 5' on the upstream side (the water intake 2 side) of the water collecting troughs 5 and 5'. The rush body 7 in the present invention teeth figure As shown in FIG. 6, a loop-shaped fiber body 9 is provided so as to protrude from a core body 8 on both sides. Another embodiment of the rush body 7 is a membrane-like rush body 14 with a float, as shown in FIG. 7, in which a net 12 is suspended from a float 11 having an insertion port 10 for a rope or the like, a weight 13 is attached to the lower edge of the net 12, and the rush body 7 is then integrally attached to one or both sides of the net 12.

[0013] 8, two nets 12 are suspended from a float 11, and rush bodies 7 are integrally attached to the two nets 12 to form a membrane-like rush body 14 with a float. The rush body 7 on the intake 2 side is suspended, and the lower edge of the rush body 7 on the water collection trough 5 side is fixed to the water collection trough 5. The lash body 7 suspended on the intake 2 side captures particles flowing through the cross section of the water flow, and the lash body 7 on the water collection trough 5 side captures particles in the flow rising toward the water collection trough 5, which is effective. The particles captured by the rush body 7 swell and then peel off, capturing new particles again. However, when the muddy water treatment in the water tank 1 is stopped, the particles captured by the rush body 7 are knocked off, and when the muddy water treatment is resumed, the rush body 7 is able to capture new polluted particles, removing the pollutants that have accumulated in the water tank and ensuring the capacity of the water tank.

[0014] Furthermore, in the water tank 1 of the present invention, sheet membranes 15 are suspended from floats 11 between the side wall of the water tank where the water intake 2 is provided and the water collection trough 5' and / or between the water collection trough 5' and the water collection trough 5, and shields each having a weight 16 attached to the lower edge of the sheet membrane 15 are connected to form water flow gradient membranes 17 with a gap between the sheet membranes 15 of adjacent shields, as shown in Figure 9, and the water flow gradient membranes 17 are deployed in multiple layers parallel to the rush body 7. When the water flow gradient membranes 17 are deployed in multiple layers, the water flow senses the fluid resistance of the water flow gradient membranes 17 and repeats turbulent flow, blocked flow, laminar flow, advection flow, contraction flow, and Karman flow, causing the water flow to meander, so that the water flow flows widely inside the water tank and no dead space is generated at the four corners of the water tank 1. Furthermore, the water tank 1 with multiple water flow gradient membranes 17 spread over it has improved multi-functional effects such as an increase in the cross-sectional water flow area of ​​the water tank 1, an extension of the water collection distance, an increase in retention time, an improvement in dead space, promotion of settling of initial particle groups, promotion of contact filtration, adhesion and settling of particle groups, an increase in processing volume, and a more compact settling tank. When the water flow gradient membranes 17 are deployed in multiple locations, it is preferable to deploy the front and rear water flow gradient membranes 17 alternately to the left and right so that they do not overlap at the same position.

[0015] Furthermore, when using the water tank 1 of the present invention to treat the muddy water generated in a short time using a coagulant, a water channel 18 can be provided along the upper side wall of the water tank 1, as shown in Figure 10, and a coagulant inlet 20 can be provided at the muddy water inlet (corresponding to the water intake) 19, allowing the coagulant to be added to the muddy water, thereby enabling good treatment. The water channel 18 surrounds the four sides of the water tank 1, and a diversion stirring plate 22 is provided on the inner side wall 21 of the water channel 18. The tortuous flow mixing plates 22 are provided alternately on the left and right side walls 21 inside the water channel 18, so that the muddy water flows in a meandering pattern. It is preferable that the spacing between the contiguous flow agitating plates 22 be narrow to rapidly mix the muddy water on the inlet side, and that the spacing between the contiguous flow agitating plates 22 be wide to gradually slow down the mixing. As another embodiment of providing the water channel 18 in the upper part of the water tank 1, it is also preferable to provide the water channel 18 from the side wall of the upper part of the water tank 1 inward, as shown in FIG. The flocculants used are in liquid and solid form; the liquid dissolves immediately and must be added constantly, while the solid dissolves gradually and only needs to be added once a day, making operation and management simple. [Explanation of symbols]

[0016] 1. Aquarium tank 5. Water collection trough with cutout 5´··· Water collecting trough with notch 7. Rush type 17...Water flow gradient membrane

Claims

[Claim 1] An improved water tank, characterized in that a water collection trough having a plurality of notches at its upper edge is provided in close contact with and / or spaced from the side wall of the water tank where the drain outlet is provided, a rush body having looped fibrous bodies protruding from a core on both sides is provided adjacent to the front of the water collection trough, a sheet membrane is suspended from a float parallel to the water collection trough between the tank side wall where the water intake is provided and the rush body, and multiple water flow inclined membranes are deployed in which blocking bodies with weights attached to the lower edge of the sheet membrane are connected so as to have a gap between the sheet membrane of adjacent blocking bodies.

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