JPS6113074Y2 - - Google Patents

Description

[Detailed description of the invention] The invention is based on a fluidized bed for wastewater treatment, an ion exchange tower,
The present invention relates to a fluid distributor installed in a fluid supply flow path to a reaction tower type water treatment device such as an activated carbon adsorption tower or a gas reaction tower device.

Conventional distributors provide one or more shielding members distributed in the transverse direction within the pipe constituting the flow path to disperse the flowing fluid or to prevent the flowing fluid from flowing into the tank. The structure was such that a large number of the fluids were provided at equal intervals in the cross-sectional direction so that a uniform flow state could be obtained in the cross-sectional direction.

However, at the point where the fluid flows into the distributor, it is assumed that the flow velocity increases toward the center of the pipe, and a shielding member is arranged to equalize the flow of the fluid. There was a drawback that if the distribution was disturbed, flow equalization would be poor. Further, even when a large number of inflow points are provided, there is a drawback that the flow velocity becomes unbalanced due to the difficulty of each outflow.

In view of the above points, it is an object of the present invention to enable good flow equalization regardless of changes in the flow velocity distribution at the point where the flow flows into the distributor.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

A distributor 2 is provided below the cylindrical treatment tank 1, a fluidized bed 4 of biofilm-attached carriers 3 is formed above the distributor 2, and the water to be treated is placed in the lower part of the treatment tank 1. On the other hand, a treated water outlet 6 is connected to the upper part, and after the water to be treated such as human waste, urban sewage, or industrial wastewater is equalized by the distributor 2, it is connected to the carrier 3... The water treatment device is configured so that the biochemical oxygen demand is reduced by the action of the activated sludge attached to the carrier 3.

The distributor 2 is provided with partition walls 7 arranged in a grid pattern in the direction of flow of the water to be treated and arranged in a direction crossing the flow path R to form divided flow paths r. Meshes 8, 8 are provided on the upper and lower sides of the partition walls 7, respectively, to form carrier storage chambers 9, and each of the storage chambers 9 accommodates a large number of carriers 10 having a specific gravity slightly larger than that of the water to be treated. be.

The carriers 10 occupy the respective storage chambers 9 at equal or approximately equal occupancy rates, and
It is housed in a state that allows relative flow inside.

Therefore, in the divided flow path r where the flow is large, as shown in FIG. This results in the formation of a long fixed bed, subjecting it to large flow resistance, and on the other hand,
In the flow path r where the flow velocity is low, as shown in FIG. 3B, contrary to the above case, a short fixed bed is formed in the direction along the flow path r, or almost a fixed bed is formed. Therefore, the flow resistance applied to the water to be treated is reduced, and the flow velocity of the water to be treated after passing through the divided channels r is made uniform regardless of the flow velocity distribution. Also, even if the flow velocity distribution before entering the distributor 2 changes,
The above action occurs in each storage chamber 9, and a continuously uniform flow rate is obtained.

Instead of the meshes 8, 8, metal or resin nets, etc., are used to connect the carrier 1 from the storage chamber 9...
Various types of reticular bodies 8 can be used as long as they allow the water to be treated to pass through without causing any 0 to flow out.

The distributor 2 has a carrier 10 that is slightly smaller than the specific gravity of the water to be treated in a storage chamber 9.
... and may be provided in the middle of the downward flow path of the water to be treated.

The present invention can be applied not only to liquid channels but also to gas channels.

In summary, the fluid distributor according to the present invention has partition walls 7 disposed in parallel in the middle of the fluid R in a direction transverse thereto to form a large number of divided flow paths r. In each of r..., a carrier storage chamber 9 is formed by providing a net-like body 8 above and below that allows passage of the fluid, and when the fluid R is in an upward flow, a carrier 10 having a specific gravity slightly larger than that of the water to be treated is provided. When the fluid R is flowing downward, the carrier 1 has a specific gravity slightly smaller than that of the water to be treated.
0 are accommodated in each of the accommodation chambers 9 in a state that allows them to flow within the accommodation chambers 9.

In other words, in the channel r where the flow velocity is high, the amount of carriers 10 that are pressed against the mesh body 8 on the downstream side in the flow direction by the pressure of the fluid increases, while in the channel r where the flow velocity is low. , the amount of the carrier 10 pressed against the net-like body 8 is reduced, which naturally causes a difference in flow resistance depending on the flow velocity distribution at the point where it flows into the distributor 2, and the flow path r where the flow velocity is high.
It is possible to suppress the flow on the side and direct the flow to the flow path r side where the flow velocity is low, and it has become possible to achieve good flow equalization regardless of changes in the flow velocity distribution at the point where it flows into the distributor 2. .

[Brief explanation of the drawing]

The drawings show an embodiment of the fluid distributor according to the present invention, in which Fig. 1 is a schematic longitudinal cross-sectional view of a water treatment device, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a cross-sectional view of the water treatment device. is an action explanatory diagram. 7... Partition wall, 8... Net-like body, 9... Carrier storage chamber, 10... Carrier, R... Channel, r... Divided channel.

Claims (1)

[Scope of utility model registration request] A partition wall 7 is installed in the middle of the flow path R in a direction that crosses it.
are arranged in parallel to form a large number of divided channels r..., and in each of the divided channels r..., net-like bodies 8 that allow passage of fluid are provided above and below to form a carrier storage chamber 9. When the fluid R is an upward flow, a large number of carriers 10 having a specific gravity slightly larger than that of the water to be treated are used, and when the flow path R is a downward flow, a large number of carriers 10 having a specific gravity slightly lower than that of the water to be treated are used. A fluid distributor characterized in that a large number of fluids are accommodated in each of the accommodation chambers 9 in a state that allows flow within the accommodation chambers 9.