KR200204691Y1 - Floating media continuous filter & clarifier - Google Patents

Abstract

In recent years, the improvement of water quality of small and medium-sized sewage treatment facilities (septic tanks) manufactured in factories has emerged as an important issue from the viewpoint of environmental protection, which necessitates the need for filtration treatment.

However, the quantity of the septic tank is too small to be filtered, so it is difficult with the conventional batch filtration apparatus, and the continuous filtration apparatus using sand is also difficult to restart in case of failure, and when the failure occurs, the water quality deteriorates not even by the simple sedimentation treatment.

The present invention adopts a filtration method that uses a floating filter so that even if the filtration efficiency is somewhat lowered, there is little concern for failure. If the filtration device breaks down, the inflow water is automatically introduced into the settling chamber so that the filtration device breaks down. At the very least, the effect of sedimentation is to provide a cheap, safe and suitable device for small filtration by means of an obtainable structure.

Description

Floating Media Continuous Filtration Sedimentation Equipment {FLOATING MEDIA CONTINUOUS FILTER & CLARIFIER}

In recent years, small- and medium-sized sewage treatment facilities (hereinafter referred to as septic tanks), which are manufactured in factories, are rapidly spreading.

The treatment method of such a septic tank was mostly discharged after simple settling after aerobic biological treatment with a fixed contact material such as HBC.

The amount of treated water was too small to be filtered. However, demands for water quality improvement have become increasingly strong in terms of environmental protection.

Widely used batch filtration devices are difficult to control automatically, are expensive, and have large mechanical devices and large backwash baths, which are not suitable for small filtration such as septic tanks.

So, upstream sand continuous filtration and countercurrent sand continuous filtration were developed, but this is the problem that it is difficult to restart because the sand is strongly stuck inside the reverse customs when the bubble pump sand customs operation is stopped due to power failure or breakdown. there was.

This failure is the result of even a simple settling process.

In addition, this continuous sand filtration method is not suitable for septic tanks that neglect normal management due to many problems such as the sand itself, instability of the runoff level due to loss of filtration pressure.

However, the sewage from HBC treatment in the septic tank is very low around 20PPM and can easily achieve the target water quality SS 10PPM even if not completely filtered. The present invention focuses on the advantages, so that even though the filtration performance is somewhat reduced, the use of flocculation media with a low possibility of failure such as clogging and sedimentation can be performed even if a failure occurs. The object is to provide a device suitable for the present invention.

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Figure 1 is a full sectional view of the present draft

Fig. 2 is a sectional view in the case of simplifying Fig. 1

Figure 3 is a plan sectional view when report Figure 2 is written in the septic tank.

Solid line is normal water flow, dotted line is emergency water flow

<Description of the code | symbol about the principal part of drawing>

1. Filtration chamber

2. Settling chamber

3. Common lower part of filtration chamber and sedimentation chamber

4. Injury Media

5. Inlet pump pipe

6. Force century pumping pipe

7. Sludge suction tube

8. Screen

8A. Screen Mesh 8B. Screen trauma

9. Backwash water pipe

10. Emergency inflow pipe

11. Outflow pipe

12. Raw water tank

12A. Water tank

13. Current network

Two vessels having a relatively narrow lower portion are used to communicate with the lower end thereof, respectively, as the filtration chamber 1 and the precipitation chamber 2, and the lower portion forms a funnel-shaped common lower portion 3.

As a method of joining two containers in communication, it is best to insert a small funnel container with an open bottom in a large funnel-type container as shown in FIG. 1, but it is inconvenient to use a narrow space in a septic tank as shown in FIG. 2. It might be a good idea to glue the two containers together in bottom communication.

In any case, there is no difference in making the two containers communicate with each other and forming the common lower part 3.

The filtration chamber 1 is filled with a floating filter 4.

The material of the floating filter material 4 is most suitable as low cost and easy molding.

By installing a backwashing force pump 6 connecting the lower portion of the filter medium 4 and the backwashing filter screen 7, the lower filter medium is transferred to the backwashing screen 8.

The screen 8 is best to form a hat-shaped screen net (8A) as shown in Figure 1, but because it is difficult to manufacture is inclined flat type as shown in FIG.

The screen 8 of FIG. 2 has the same structure as the automatic screen widely used in the wastewater treatment plant. That is, the screen net 8A (porous plate or SUS net) is inclined on the screen outer box 8B.

Of course, the hole size of the perforated plate or the eye size of the wire mesh should be smaller than the screening material (4) to be able to operate the screen.

Moreover, the lower part of the screen outer box 8B is a box-type which can receive backwashing water, and the backwashing pipe 9 is joined and conveys backwashing water.

The sludge suction tube 7 which communicates with the lower end of the common lower part of the filtration sedimentation chamber 3 is inserted into the inside of the backwash force pump pipe 6.

The raw water tank 12 and the upper portion of the filtration chamber 1 are connected to the inlet pump pipe (5).

Inlet pumps usually use bubble pumps but need not be bubble pumps. The end of the inflow pump tube is a porous tube so that the inflow water is evenly sprayed on the filter medium surface.

The boundary between the inflow water tank 12 and the filtration chamber 1, that is, the inflow pump tube 9, forms a boundary with the overflow network 13.

The size of the eyes of this net 13 is also smaller than the media 4.

A position slightly higher than the raw water tank surface 12A of the raw water tank 12 and the settling chamber 2 are connected to the emergency inlet pipe 10.

The operation of the present invention is as follows.

The water in the raw water tank 12 (HBC tank in the case of the purification tank) is sprayed on the upper part of the filter medium 4 through the inflow pump pipe 5, filtered between the filter mediums 4, and then some unfiltered sludge is common to the lower part 3). It is left in the passage through the settling chamber (2) flows out through the outlet pipe (11).

The filter medium used for the filtration is a backwash foam pump tube (6), which is sucked by the action of the bubble pump together with some water, so that water (backwash water) containing contaminants from the screen (8) falls below the screen (8). (9) is withdrawn (in the case of septic tanks to the storage tank) and the filter media is deposited on top of the filtration chamber and then gradually moved to the bottom of the sediment filter media and used for circulation.

The flocculated sludge does not descend below the media 4 and is eventually sucked together with the media into the backwash force pump pipe 6 and treated with backwash on the screen 8.

Some of the unfiltered sedimentary sludge is lowered in the settling chamber 2 so that it descends and collects in the common lower part 3 and is treated with backwashing water in the screen 8 through the sludge suction tube 7.

A significant advantage is that no separate pump is needed to treat the settling sludge.

This is the normal operation of the present invention.

However, if the inflow pump pipe 5 is broken, the water surface 12A of the raw water tank 12 rises and eventually water precipitates sludge in the common lower part 3 through the emergency inlet pipe 10 and then flows out.

It is also the case that the flow rate which the inflow pump pipe 5 cannot handle due to a special situation is introduced.

In both cases, the sedimentation sludge continues to be treated with backwashing water on the screen (8) via the sludge suction tube (7).

When the inlet pump pipe (5) and the force-strength pump (6) is stopped at the same time by a power outage, water also flows out after settling through the emergency inlet pipe (10). In this case, the sludge cannot be continuously removed. However, the amount of sedimentation sludge is not so high that the sedimentation can be maintained for a long time until restarting or repair.

The inflow pump tube 5 operates normally, but when the backwashing force pump tube 6 is stopped, the backwashing operation is stopped, the filter medium 4 is blocked, and the inflow water flows through the overflow network 13 to flow into the raw water tank 12. As a result, the water level of the raw water tank 12 is increased, and eventually, the stream is discharged through the emergency inlet pipe 10.

If the inlet pump tube 5 and the back-up force pump tube 6 are operated with one air compressor, this can not be the case, and thus the overflow network 13 will be unnecessary.

The continuous filtering of the floating filter of the present invention uses a screen, so the filter medium is large and re-ejection of detained solids is inevitable, so the filtration effect is somewhat inferior, but there is little risk of clogging, smooth backwashing, and no problem during restarting after failure or power failure. to be.

Once detained, the solids have improved sedimentation and then aspirated off after settling, so the overall efficiency is not so bad.

The advantage is that even if some equipment fails, the minimum water quality due to precipitation can be maintained.

The present invention can be operated with one air compressor if it is installed well. Especially, it does not need special pump for sedimentation sludge treatment.

Considering that the existing septic tank uses a separate bubble pump attached to a timer for returning the sedimentation sludge, the filtration is obtained free of charge.

Although the filtration effect of floating filtration continuous filtration is somewhat deteriorated, the water quality is superior to that of simple sedimentation.

Claims (1)

The lower portion of the filter chamber (1) and the precipitation chamber (2) is relatively narrow in communication with the lower portion of the filter chamber (1) is properly filled with the floating filter (4) and the raw water tank (12) and the upper portion of the filtration chamber (1) The sludge suction pipe (7) connected to the inlet pump pipe (5) and communicating with the common lower portion (3) of the filtration chamber (1) and the settling chamber (2) in the inside of the back-filling force pump pipe (6) Floating media continuous filtration and sedimentation apparatus in the sedimentation chamber (2) formed an emergency inlet pipe (10) connected to the raw water tank at a position slightly higher than the raw water tank (12A)