JPS6133293A - Filter - Google Patents

Abstract

PURPOSE:To prevent the deterioration in function of a filter by providing a discharge port to a bottom surface of the part close to the bottom surface and forming a filter medium of filter medium layer in the discharge side with ballast, broken stone or wood wool-like material. CONSTITUTION:One end of the inside of vessel of a main body 1 is partitioned at right angles for the flow direction by providing a perforated plate 4 perpendicularly to provide an inflow chamber A between the perforated plate 4 and the wall surface. The part between the plate 4 and the wall surface of the other end is partitioned to form a discharge chamber C by providing perpendicularly a perforated plate 5 parallel to the perforated plate 4 and a filter medium 6 is incorporated between the perforated plates 4, 5 to form a filter medium layer B and an inflow pipe 2 communicating to a circulation pump is perpendicularly provided in the inflow chamber A and an inflow port 8 is opened in the position immersed into water. When the circulation pump is actuated, water is flowed into a water storage chamber A from the inflow port 8 of the inflow pipe 2 and passed through the filter medium layer B in the lateral direction from the water flow holes 7 of the perforated plate 4 and returned through a discharge port 3 to be circulated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a filtration device, in which the inside of a tank is partitioned by vertically arranging all the filtration media layers with a space layer at right angles to the flow direction, and water is passed laterally to perform catalytic oxidation. The growth of bacteria in filtration devices is such that bacteria continue to grow and accumulate inside the filter medium with a large water passage space, while bacteria continues to grow and accumulate inside the filter medium with a small water passage space or with a filtering function. As time passes, due to the chemotaxis of the bacteria, the proliferation of the bacteria as a filtration active inflow surface KF membrane takes priority, and the thickness increases. The furnace belly peels off, the water flow rate in that area is restored, and this process is repeated.
Therefore, it maintains its purifying power. On the other hand, with filter media that has a filtration effect, solid matter or free bacterial cells that flow in with the flow get caught on the inflow surface and turn into bacterial cells, and water flow resistance is concentrated on the surface and the water level rises. It flows easily at the top of the layer, and as a result, there is insufficient contact between water and bacteria, which tends to cause the bacteria to wither.

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Purification by water flow continues for a long time, but due to lack of water flow resistance, bacteria tend to die due to partial water flow, and the support surface for bacteria is small, causing bacteria to become loose and peel off, resulting in a large amount of bacteria leaking out to the outside. However, there are disadvantages such as direct adverse effects and difficulty in recovering the amount of bacteria, and in both cases, the increase in bacteria causes a decline in functionality,
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This idea was proposed in view of the above, and a filtration material layer containing a filtration material is erected between perforated plates or corrugated perforated plates, with a space layer interposed almost perpendicularly to the direction of water flow inside the filtration tank. In a flow device that measures catalytic oxidation by passing water in the direction of lateral force, the filtration material in the filtration material layer that is in contact with the discharge port is made into a filtration material that has the effect of physically straining, and the outflow surface of the filtration material layer and A discharge port is provided at or near the bottom of the space layer formed by the wall surface,
The present invention relates to a filtration device that utilizes the water pressure difference to eliminate the structural drawbacks of a vertical filtration tank in which water tends to overflow through the filtration material layer, and greatly enhances its functionality.

Hereinafter, it will be explained along with examples. FIG. 1 shows a mixed filtration device, in which a perforated plate 4 is installed upright at one end of the tank of the main body 1 to partition it at right angles to the flow direction, and an inflow chamber A is provided between the tank and the wall surface, and a perforated plate 4 is installed parallel to the perforated plate 4 to partition the tank at right angles to the flow direction. A perforated plate 5 is erected between the other end wall surface to form a partition discharge chamber C, and a filter medium 6 is stored between the perforated plates 4 and 5 to form a filter medium layer B, which is circulated to the inflow chamber A. An inlet pipe 2 that communicates with the water pump is installed vertically, and an inlet 8 is installed at a position where it will be submerged in water.
Open. A discharge pipe 3 is provided at or near the bottom of the discharge chamber C. In addition, the buffering effect in the tank can be reliably obtained in the filtration material layer B, and the form of bacterial growth is tear film-like.
A wooden wool-like substance with natural or artificial fibers randomly intertwined, which has a filtering effect, product name: Vinyrock, or gravel with small water-permeable spaces, restricts water flow and creates a spatial layer due to water-flow resistance. A vertical buffer flow is created at A to equalize the water flow. When this filtration device is installed on the ground and the circulation pump is operated, water in the pond constantly flows into the water storage chamber A through the inlet 8 of the inflow pipe 2, and through the water passage hole 7 of the perforated plate 4 through the overfill layer B. Water passes in the horizontal direction and is returned to the pond through the discharge port 3 for circulation.

Regarding the function and effect, the inlet port β of the inflow pipe 2 is submerged in the inflow chamber AK, so that changes such as air mixing during inflow are prevented, and the environmental conditions are the same as that of the pond water, thereby preventing sudden changes in water temperature, etc. Therefore, the main change is the flow at the time of inflow.

The inflowing water in the inflow chamber A is subjected to the water flow resistance of the filter material layer B, and becomes agitated there, the water level rises, and the flow is buffered vertically. As water passes through the filter material layer B, filter bacteria (bacteria) increase in the filter material 6 and the water passing therethrough is purified. During this period, bacteria and clogging substances are caught on the inflow surface due to the straining action, and the water flow resistance on the surface increases, the water level on the inflow side rises in a dammed state, and the spatial layer A has a buffering effect and other poetic effects. You can get it without any trouble. The circulating water passes through the surface of the filtering material and flows into the filtering material layer B, but since the water passage space inside the filtering material 6 is large, the water does not pass in the lateral direction, and the inflowing water flows into the filtering material layer B. , the internal flow due to water flow on the flow surface through the fibers and the head difference creates a triangular shape as shown in Figure 1. In filter media with small water-flowing spaces, such as gravel, the increase in bacteria causes water to flow mainly in the lateral direction due to water pressure differences over short periods of time, which persists over a long period of time due to the increase in water pressure.

On the other hand, the proliferation of bacteria is prioritized by chemotaxis, and the proliferation of bacteria on the surface of the filter material as a membrane takes priority, and the bacteria continue to increase in thickness, and the circulating water is absorbed by contact with the P membrane. It is purified. The F membrane peels off in two parts depending on its thickness, and the water flow returns to the previous state again because the water flow resistance on the surface becomes smaller. As water flows through the filter medium, oxygen and nutrient sources are consumed one after another on the flow surface of the filter medium, so the breeding and accumulation of bacteria concentrates on the inflow surface of the filter medium, and decreases as it gets closer to the flow surface of the filter medium.

Therefore, even if the outflow surface 5 of the filter layer B is exposed to the air, the function as an F bed will not be affected.

As described above, according to the present invention, by placing the discharge port near the bottom surface, the water flow through the filtering material layer, which has a filtering effect using water pressure, is strengthened, and this effect is deeply rooted at the bottom surface, making it easy to overflow. By eliminating these drawbacks, the above-mentioned water purification function can be maintained for an extremely long period of time. In particular, in the case of Vinylock, the flow inside the filter medium is a lateral flow due to water pressure and a flow due to the head, which causes contact between water and bacteria, and furthermore, the back side and the areas where water does not reach are exposed to the air. Therefore, there is no loss of aerobic conditions, and the inside of the filter material can accumulate a large amount of bacterial cells, which is advantageous.

Figure 2 shows a plurality of filter media layers erected in the direction of debt flow, and water is passed between partitions, perforated plates, or corrugated perforated plates 4 and 5 at space layers A and A'i7 as filter media. A wooden wool-like material (trade name: Hechimaron) made of artificial or natural fibers intertwined irregularly is stored in a large space, and the final 'F-layer material is stored with the trade name of Vinylock. This is an embodiment in which a perforated plate 4 is erected along the inflow surface to separate the inflowing people and a spatial layer A is provided. In this example, when circulating water is injected into the space layer A through the inlet 8, the water level rises at the level of the outlet 3, and the water level rises to the level of the water passage hole 7 of the perforated plate 4. In the filter material layers B and B, the hechimaron 6 and the vinyl lock box, the filter media 6 and 6 inflow surfaces 9, 9, and the porous plate-six yoke are formed. This space layer and D may be created by using a support ridge or a support frame net when initially setting the filter medium 17c.

Regarding the action and effect, bacteria multiply and increase in the filter media 6 and 6 by passing water through the filter media layers B and B, but the final P
:ii Due to the straining action of the 4 material layer B, the water level in the p1 tank rises, the buffering action and other poetic actions of the spatial layers A and A operate without any trouble, and the perforated plate 4 and the interlayers change to form a flow film. The filth that flows into Hechimaron 6, which is a filter medium with a large water passage space, which is considered inappropriate, does not flow deeply into the filter medium, but gets caught on the inflow surface 9, where bacterial cells are formed. In the long term, the mode of reproduction is due to the chemotaxis of the bacteria, and most of the reproduction increases inside the filter medium 6 on the furnace belly or on the inflow side of the filter medium. ,D
Then, as time passes, the filter media 6, such as the filtration membrane, which peels off, and the bacterial cells that are separated from the filtration media 6 will accumulate in the spatial layer formed along the inflow surface. The water flow is constantly averaged due to the buffering effect of the space layer and the variable inflow direction, so by averaging the accumulated bacteria and passing water laterally, υ sludge (bacteria) can be reduced. You can obtain efficient purification function without losing activity.

By using the above method of providing a space layer along the inflow surface,
By forming an activated sludge layer, Cimarron can prevent partial water passage, which is its drawback, and make full use of its advantages.Furthermore, filter media with a large water passage space can be used with the discharge port at the bottom. The inlet side is the most suitable in terms of ripple effects, as the effect of overflow prevention by placing it nearby and the straining effect in the final layer spread throughout the tank, and the inflow side where a large amount of easily decomposed components are processed. It is also the most suitable filtration material for the tear filtration material layer.

By accumulating a large amount of bacterial cells three-dimensionally under the above-mentioned conditions, and then passing water through the tank to measure catalytic oxidation, the purification function of the vertical filtration tank can be significantly enhanced.

In addition, since the activated sludge layer forms ruts for an extremely long period of time, it can act as a buffer space to stabilize the environmental conditions for bacteria, which is a basic condition, and prevents the contact between water and bacteria. By accumulating the sludge in the flow path or buffer space, each function can be maintained for a long time, and the purification function is advantageously prevented from deteriorating even when bacteria increase.

The above example has been explained, but in this case, the purification function of the final filter layer determines the function as a purification device by blocking the external outflow 1 of sewage and bacterial cells, and so on. By using the water pressure difference to forcibly strengthen the water passage through the final filtration material layer, and by using the most suitable filtration material, the purification function can be significantly enhanced. It is easy to clean and recycle when necessary by using irregularly tangled wood wool or non-woven fabric, and it can be easily recycled using the methods shown in Figures 2 and 3. Accumulates an increasing number of bacterial cells, maintains the activity of a large amount of bacterial cells, and has purifying power? It can be provided with the unprecedented feature that the function does not deteriorate even when bacteria increase. Since its structure is simple, it can be used for a wide variety of purposes, such as fish farming, domestic gray water, and deep bed drainage purification.

[Brief explanation of drawings]

1 to 3 are cross-sectional views showing embodiments of the present invention. In the figure, 1 is the main body, 2 is an inflow pipe, 3 is a discharge pipe, 4 and 5 are perforated plates, 6 is a filter material, 7 is a water hole, 8
9 is the inflow port, and 9 is the laminar flow surface of the filter material.

Claims (3)

[Claims] (1) A space layer is placed in the flow direction inside the tank, and at least one or more filter media layers are installed vertically to partition the tank, an inlet pipe is provided in the space layer at one end, a discharge pipe is provided in the space layer at the other end, and the space layer is placed horizontally. In a filtration device that measures catalytic oxidation by passing water in the same direction, the discharge port is provided at or near the bottom, and the filter layer on the discharge side is made of gravel, crushed stone, other granular materials, or artificial material that acts as a filter. Or a filtration device characterized by being composed of a wood-hair-like material in which natural fibers are irregularly entangled. (2) The filtration device according to claim 1, wherein the filter medium of the inflow side filter layer is a wood wool-like material in which artificial or natural fibers with a large water passage space are irregularly entangled. (3) The filtration device according to claim 1, wherein the filtration material layer is a perforated plate or a corrugated perforated plate containing a wood wool-like material in which artificial or natural fibers are irregularly entangled. .