JPH04137707U - Solid-liquid separation device using vortex flow - Google Patents

Abstract

(57) [Summary] [Purpose] This invention relates to a solid-liquid separator that captures suspended solids contained in water, sewage, industrial wastewater, etc. using the generated eddies. [Structure] A means for blocking a flow path, which has a large number of water passage holes with an equal passage area by making the hole diameter and pitch the same, is arranged almost perpendicular to the flow velocity direction of the water to be treated containing suspended solids. They were arranged parallel to each other in multiple stages at appropriate intervals within the same plane.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea removes suspended solids contained in water, sewage, industrial wastewater, etc. by the vortex generated. The present invention relates to a solid-liquid separator that captures a stream.

0002

[Conventional technology]

Traditionally, solid-liquid separation of suspended solids contained in treated water has been carried out by gravity sedimentation of fine particles. The majority was the inclined plate method, which mainly used the rain to separate the parts.

0003

[Problem that the idea aims to solve]

In this case, since the fine particles are lightweight, settling due to gravity alone will take a long time to settle. Further, there was a drawback that the separation volume became large.

0004

[Means to solve the problem]

Therefore, in order to eliminate these drawbacks, the inventors decided to make the hole diameter and pitch the same. Therefore, a means for blocking a flow path with a large number of water holes with a uniform passage area is Parallel at appropriate intervals in a plane almost perpendicular to the flow velocity direction of the water to be treated containing water. We also propose a solid-liquid separation device using vortex flow, which is characterized by being arranged in multiple stages. It is.

[0005]

【Example】

Next, this invention will be explained in detail with reference to the accompanying drawings. Conventionally, as shown in Figure 1, water is placed at appropriate intervals in a plane that is almost perpendicular to the water flow. By utilizing the vortex phenomenon caused by the plurality of fins 13 arranged, the action of gravity is In addition to this, a forced and dynamic solid-liquid separation method that uses fluid drag and inertial force as a driving force is also available. Although the stage was first proposed, this idea is a further development of the solid-liquid separation phenomenon caused by this vortex flow. The purpose is to provide a separation device.

[0006] As an example of this invention, FIG. Mixed water 6 having fine flocs formed by injecting and rapidly stirring in mixing tank 3 is made into a laminar flow state through a rectifier plate 4 with many small holes perforated on one side, and the flow path is blocked. Solid-liquid separation is performed by a vortex phenomenon in a separation tank 5, which will be described later, and the effluent water 7 is It shows the process to be processed as follows.

[0007] The above-mentioned solid-liquid separation tank 5 has fine particles as shown in the embodiment of this invention shown in FIGS. 2 and 3. A plurality of perforated plates 9 having a large number of water passage holes 8 are provided in the flow path of the mixed water 6 containing particles. , arranged in parallel in multiple rows at appropriate intervals of 10 in a plane substantially perpendicular to the flow velocity direction. It is formed by

[0008] The mixed water 6 that has passed through the water holes 8 is determined by the amount of mixed water, the hole diameter of the water holes 8 of the perforated plate 9, and the diameter of the water holes 8 of the perforated plate 9. This is caused by the flow velocity of the water passage holes 8 determined by the The vortex 11 separates and traps suspended matter on each perforated plate 9. In addition, cohesive In the case of suspended solids, contact with suspended solids 12 that has already settled may also cause fine particle formation. Acquisition is facilitated.

[0009] In this design, it is most desirable that the flow velocity direction of the mixed water 6 is perpendicular to the surface of the perforated plate 9. However, the chevron shape in Figure 7 and the valley in Figure 8 take into consideration the mud removal means (discharge passage 8'). It may be a curved shape as shown in Figure 9, or a combination of these shapes or similar shapes. There is no problem as long as a vortex is generated.

0010 Regarding the inflow direction of the mixed water 6, also regarding the upward flow, the downward flow, or the horizontal flow. There is no problem if a similar vortex phenomenon occurs.

[0011] Furthermore, the shape of the separation tank 5 may be a hollow cube or a hollow cube, as shown in FIGS. 7 to 9. A module with water holes 8 on the upper and lower surfaces of a hexagonal prism, etc., or a module with a through-shaped side wall. Modules or their blocks are stacked vertically and horizontally. Of course, it is possible even if the separation phenomenon is similar. Ru.

0012 Note that the shape of the water passage hole 8 is circular, square, etc., in short, it creates a vortex flow with respect to the passing flow. As long as it has a shape, there are no restrictions.

[0013] Regarding washing, suspended solids are removed and the suspended solids loaded on the perforated plate 9 are washed after separation. By flowing the effluent water 7 or separate washing water in the opposite direction, the concentrated flow The water is easily removed from the water holes 8 one after another, and after passing through the current plate 4 downward, it is discharged. It is discharged through the use hole 20 (shown in FIG. 1). In addition, in Figures 7 and 8, the discharge passage The floc is discharged through 8'.

[0014] If this idea is used in the front stage of an existing sand filter tank, it can significantly reduce the load on the sand filter tank. It also acts as a buffer against fluctuations in the turbidity of the water being treated, extending the life of the sand filter tank. It can last a long time.

[0015]

[Effect of the idea]

As mentioned above, this idea is based on the forced separation of fine particles using a completely new vortex flow, and In addition, since it is a separation device that promotes capture through contact with deposited fine particles, it is particularly effective against fine particles. Excellent in separating particles, and allows equipment to be made into modules or blocks. It has the following effects.

[Brief explanation of drawings]

FIG. 1 is a processing system diagram showing this invention.

FIG. 2 is a schematic explanatory diagram showing the vortex separation state.

FIG. 3 is a perspective view of a perforated plate arrangement.

FIG. 4 is a perspective view of a usable hollow cube-shaped flow path blocking means;

FIG. 5 is a perspective view of a similar hollow hexagonal prism means;

FIG. 6 is a longitudinal cross-sectional view of what is shown in FIGS. 4 and 5. FIG.

FIG. 7 is a schematic vertical sectional view showing another embodiment of the invention.

FIG. 8 is a schematic vertical sectional view showing another embodiment of the invention.

FIG. 9 is a schematic longitudinal sectional view showing another embodiment of the invention.

FIG. 10 is a schematic vertical cross-sectional view showing separation by conventional vortex flow.

[Explanation of symbols]

1 Water to be treated 2 Flocculant 3 Mixing tank 4 Current plate 5 Separation tank 6 Mixed water 7 Runoff water 8 Water hole 9 Perforated plate 10 Appropriate intervals 11 Eddy current 12 Suspended matter 13 Finn

Claims (2)

[Scope of utility model registration request] Claim 1: A means for blocking a flow path in which a large number of water passage holes having an equal passage area by making the hole diameter and pitch the same is provided in the flow velocity direction of the water to be treated containing suspended solids. A solid-liquid separation device using a vortex flow, characterized in that a plurality of stages are arranged in parallel at appropriate intervals in substantially orthogonal planes. 2. A solid-liquid separation device using a vortex flow according to claim 1, wherein the means for blocking the flow path having a large number of water holes is a perforated plate.