KR100804782B1 - Sewage purification device using soil - Google Patents

Abstract

A sewage purification apparatus is provided to improve the water permeation while keeping the purification performance of soil, by using multiple soil layers having an excellent performance in purification of sewage and a water-permeable layer for activating the soil layers. A discharge port(11) is formed at a lower end of a water purification bath(10). A water-permeable layer(20) fills the water purification bath, wherein the water-permeable bath contains artificial soil having an excellent performance of water permeation. Multiple soil layers(30) are laminated at a uniform interval among the water-permeable layer. A sewage watering unit(40) is installed above the water purification bath to supply sewage to the water-permeable layer and the soil layers. An air diffuser(50) is installed at the water purification bath to supply air to the water-permeable layer and the soil layers. The artificial soil within the water-permeable layer includes a porous artificial soil having pores formed at locations where organic powder is burned out during a hardening process when a mixture of soil powder, organic powder, and water is molded and hardened.

Description

Sewage Purification Device Using Soil

1 is a schematic cross-sectional view of an exemplary wastewater purification apparatus according to the present invention;

2 is a conceptual perspective view of the sewage purification apparatus of the present invention;

3 is a photographic view of an artificial granule, an example of a water-permeable layer applied to the sewage purification apparatus of the present invention;

Figure 4 is a block diagram of a soil block that is an example of the soil layer applied to the sewage purification apparatus of the present invention,

5 is a schematic view of the sewage sprinkling means and the diffuser means applied to the sewage purification apparatus of the present invention;

6 is an exemplary use state schematic diagram of the wastewater purification apparatus according to the present invention;

<Description of Symbols for Main Parts of Drawings>

1: Sewage Purifier of the Present Invention 2: Floor 4: Plant

10: septic tank 11: outlet 12: drain pipe

20: water passage 21: artificial granules 30: soil layer

31: soil block 32: block container 33: loss prevention sheet

34: mixed soil 40: sewage treatment means 41, 51: inlet pipe

42, 52: porous tube 43, 53: hole 50: air diffuser

60: ventilation means 61: aeration 62: ventilation tube

(Technology)

The present invention relates to a sewage purification apparatus, and to a sewage purification apparatus using soil capable of economical and high-speed treatment by increasing the sewage purification amount per unit area by improving the low permeability of the soil while maintaining the excellent purification capability of the soil. .

(Background)

Soil has excellent sewage purification ability, but has a low permeability coefficient and thus a small throughput per unit area. Therefore, in order to purify sewage using soil, extensive sites are needed. Therefore, the construction of sewage purification apparatus using soil is limited to a large area of free land.

As a countermeasure to solve such a problem, a structure for applying soil with large particles such as sand to a sewage treatment device has been proposed. However, such a sewage treatment device has an advantage of increasing the sewage throughput due to a large permeability coefficient. There is a disadvantage that the purification efficiency is reduced by shortening.

In order to solve the above-mentioned problems of the sewage purification apparatus using soil, artificial microorganism contact filter and filter have been widely studied, but the purification technique using soil is the basic of the purification technique and the development is still insufficient.

An object of the present invention is to solve the problems in the conventional sewage treatment apparatus using the soil as described above, to compensate for the shortcomings of the low permeability coefficient of the soil and to properly activate the soil layer sewage purification It provides a sewage purification device using soil that is economical and can be processed quickly by applying a structure in which a good soil layer is laminated in multiple layers to improve the permeability (water permeability) while maintaining the excellent water purification ability. In particular, it is intended to be able to utilize the sewage purification using soil that has been used for a limited time to a high level of treatment.

According to the present invention, a sewage purification apparatus using soil is provided.

The sewage purification apparatus using soil according to the present invention includes a septic tank, a water passage layer, a soil layer, a sewage watering means, and an air dispersing means.

The septic tank is a tank-like structure, the discharge port is formed on the lower side.

The water passage layer comprises artificial granules having excellent water permeability and is filled in the septic tank.

The soil layer is laminated in the septic tank in multiple layers at regular intervals between the water passages.

The sewage sprinkling means is installed on the upper side of the septic tank to supply the sewage to the water passage layer and the soil layer.

The air diffuser is installed in the septic tank to supply air to the water passage layer and the soil layer.

The artificial granulated soil of the water-permeable layer includes porous artificial soil in which pores are formed in the place of the organic powder combusted during the sintering process by mixing and mixing the soil powder and the organic powder with water to a predetermined size.

Preferably, the soil layer is a block block containing a breathable block, a loss prevention sheet that covers the inner surface of the container and prevents soil loss while passing water, and a soil block including a mixed soil firmly filled in the loss prevention sheet. It is formed.

Preferably, further comprising a ventilation means for ventilating the water passage layer and the soil layer, including a ventilation passage having a predetermined width installed between the water passage layer and the soil layer and a ventilation pipe connecting the air passage to the outside.

In the present invention, 'sewage' means various contaminated water, such as contaminated sewage or river water.

Hereinafter, the sewage purification apparatus using the soil according to the present invention with reference to the accompanying drawings in detail. The following embodiments merely illustrate the sewage purification apparatus according to the present invention, but are not intended to limit the scope of the present invention.

1 and 2, the sewage treatment apparatus 1 according to the present invention is basically a septic tank 10, a water passage layer 20, a soil layer 30, sewage water discharging means 40 and air diffuser means. And 50.

The septic tank 10 is a tank-shaped structure in which the water supply layer 20, the soil layer 30, the sewage water discharging means 40, and the acidic water stage 50 are accommodated, and various sizes (eg, 900mm × 1,200mm × 2,000mm in height) is formed, preferably can be constructed as a waterproof concrete structure buried underground.

The sewage purification apparatus 1 of the present invention can be installed at a place where sewage treatment is required, and can be installed by utilizing, for example, a blunt (coriander site) in a river area.

A discharge port 11 for discharging the purified water to the outside is formed below the septic tank 10. In the embodiment shown in FIG. 1, the height of the discharge end 11a of the discharge port 11 is the septic tank 10. It is formed to increase the time for the waste water staying in the septic tank 10 is formed higher than the bottom height of. A drain pipe 12 may be provided at the lower end of the septic tank 10 so that it can be used when it is necessary to drain the sewage from the septic tank 10.

The water-permeable layer 20 is a layer for improving the permeability (water permeability) by supplementing the low water permeability coefficient of the soil, and can be applied to the crushed stone aggregate or artificial granules 21 having a small permeability than the general soil. have.

As the artificial granulated soil (21), for example, soil powder such as ocher or zeolite and organic powder (for example, wood powder such as sawdust) are mixed with water to form and sinter to a predetermined size to place the organic powder burned in the firing process. Porous artificial soil may be applied to form voids.

3 is a mixture of sawdust (organic powder) up to 20% by weight with respect to soil powder, such as ocher or zeolite, kneading the mixture with an appropriate amount of water, and then forming a spherical shape of about 10 mm and then at a temperature of 600 ° C. or more. It illustrates an example of artificial granules 21 of various sizes produced by firing.

When the artificial granules 21 are applied to the water-permeable layer 20, not only the good permeability is secured due to the presence of the voids, but also the function of the adhesion media of various microorganisms acting on the septic purification is activated. The microorganisms, once tackled, are resistant to the external environment to maintain stability and maintain their shape even under load or long-term use in water.

The soil layer 30 is a layer made of soil in which the main sewage purification effect is realized in the sewage purification apparatus 1 of the present invention. The soil layer 30 is stacked in multiple layers at regular intervals between the water passage layers 20 so that the soil layer 30 Between the water transmission layer 20 is mediated.

The embodiment shown in FIG. 1 fills only the water passage layer 20 up to a height of 600 mm with respect to a total height of 2,000 mm of the septic tank 10, and the soil layer 30 is multi-layered between the water passage layers 20 at a height higher than that. As an example of lamination, in this embodiment, the soil layer 30 is stacked in seven stages with a gap of about 50 mm in up, down, left, and right, and the lamination arrangement of the water pass layer 20 and the soil layer 30 is limited thereto. Not.

As the soil of the soil layer 30 can be used a general soil widely used for sewage treatment using the soil. For example, the mixed soil containing masato as a main component may be used as the soil layer 30, and unpolluted soil of the surrounding area where the apparatus 1 of the present invention is installed may be used.

It is preferable that the soil of the soil layer 30 is not too large or small in particle size. For this purpose, if the particle size is not suitable through the powder, sand or silt soil may be mixed and the permeability coefficient suitable for the sewage treatment flow rate to be treated ( Yes, it is used in combination so as to maintain about 2mm / min).

Preferably, the soil of the soil layer 30 may be used as a carbon source for the nutrients and denitrification of the initial soil microorganisms by mixing charcoal or flounder.

When only the mixed soil is stacked in the septic tank 10 when the soil layer 30 is formed, it is easy to be lost in the process of purifying sewage, and thus, it is preferable to form and stack the block to prevent soil loss.

1, 2 and 4 show an example in which the soil layer 30 is formed of a soil block 31 of 400 mm (width) x 400 mm (length) x 50 mm (height).

Soil block 31 is not particularly limited as long as it is a structure that can prevent the loss of soil, for example, as shown in Figure 4, for example, made of a plastic synthetic resin, etc. and high opening ratio (eg Block type container 32 formed to have a 50% or more), the loss prevention sheet 33 formed of a non-woven fabric or a net which is coated on the inner surface of the container 32 to allow water to pass but blocks soil loss to the opening, and It may be formed to include the mixed soil 34 filled in the loss prevention sheet (33).

If the soil block 31 of the block unit as described above is applied as the soil layer 30, it is possible not only to prevent soil loss, but also to standardize the soil characteristics (eg, permeability coefficient, microbial characteristics, etc.) to be kept constant. And, it is possible to easily adjust the number and layers of the soil block 31 to be applied according to the treatment capacity of the sewage treatment device.

In addition, as shown in FIG. 1, when the soil block 31 introduced into the septic tank 10 is zigzag and discharged, the sprinkled sewage flows through the soil block 31 and the water passage layer 20 in a zigzag. Sewage purification and microbial activity can be further maximized.

The sewage sprinkling means 40 is installed on the upper side of the septic tank 10, and is a means for supplying effluent to the water passage layer 20 and the soil layer 30. It is not particularly limited as long as it can be done.

The sewage water discharging means 40 of FIG. 1 and FIG. 5 is such that the sewage supplied through the inlet pipe 41 is sprinkled through the holes 43 formed in the porous pipe 42 while passing through the plurality of porous pipes 42. An example is shown. As the inflow pipe 41 and the porous pipe 42, for example, a plastic synthetic resin pipe (for example, PVC pipe) can be used, and the diameter of the porous pipe 42, the spacing and the number of adjacent porous pipes 42, the holes The number and spacing of the fields 43 may be appropriately selected according to the treatment capacity of the sewage purification apparatus 1.

The sewage water sprayed above the septic tank 10 flows down by gravity, and is purified while passing through the soil layer 30 and the water passage layer 20 in the process.

Preferably, on the septic tank 10 is planted with soil and aggregate (3) and the like to plant the plant (4) to match the ground (2) and do not deep roots such as grass, the site on which the sewage purification device (1) is installed Can be parked.

The air dispersing means 50 is a means for improving the activity of microorganisms involved in sewage purification by supplying air (oxygen) to the water passage layer 20 and the soil layer 30 and the sewage flowing therethrough.

The air dispersing means 50 to be applied to the present invention is not particularly limited as long as it is a structure capable of naturally or forcibly supplying air to the water-permeable layer 20 and the soil layer 30, and the air dispersing means 50 of FIGS. It is installed to cross the lower water passage layer 20, and the air supplied through the inlet pipe 51 passes through the plurality of porous pipes 52 and through the holes 53 formed in the porous pipe 52. An example is shown in which air is diffused. The inlet pipe 51 and the porous pipe 52 may use a plastic synthetic resin pipe, for example. It is also possible to install two or more diffuser means 50 of such a configuration at different heights.

Fig. 5 shows the sewage water discharging means 40 and the air dispersing means 50 in a substantially similar structure, and the supply of the sewage and air to the inlet pipes 41 and 51 is not shown. It can be supplied through a blower or the like.

Preferably, the sewage treatment apparatus 1 of the present invention may be further provided with aeration means (60). In the embodiment shown in Figure 1 aeration means 60 is formed between the water passage layer 20 and the soil layer 30, for example a grille of a predetermined width formed of a grille, aeration passage 61 It is configured to connect the ventilation pipe 62 connected to the outside, the air is introduced through the one ventilation pipe 62 and the air is discharged through the other ventilation pipe 62 through the air passage 61, the ventilation ( Fresh air is always supplied around 61). Of course, the ventilation means 60 may be provided with a blower forcibly venting.

The present inventors fill the water-permeable layer 20 from the bottom of the septic tank 10 of 900 mm × 1,200 mm × 2,000 mm to 600 mm height and place the soil block 31 of 400 mm × 400 mm × 50 mm on the left and right sides of 60 mm intervals and 50 mm up and down. The wastewater purification test was performed by reprocessing the sewage treatment plant effluent using the sewage treatment apparatus of the present invention as shown in FIG. 1, which was stacked in seven stages at intervals and the forced air type diffuser means 50 was applied. The results are shown in Table 1 below.

Throughput (㎥ / ㎡ · day) Water temperature (℃) BOD (mg / l) COD _Mn (mg / L) Suspension (SS) (mg / L) NH ₃ -N (mg / L) enemy Treated water enemy Treated water enemy Treated water enemy Treated water 8 23.2 15.6 2.3 14.1 7.7 13.0 1.0 18.0 2.9 8 23.1 10.9 1.2 10.8 6.1 4.5 1.0 2.1 0.5 8 22.9 16.5 1.2 10.2 5.6 6.0 1.4 9.8 0.3 8 22.9 15.2 1.3 8.6 4.8 2.4 0.2 7.3 0.0 8 22.9 11.8 1.8 8.7 7.1 8.5 1.3 12.9 0.5 8 25.3 16.9 1.5 10.9 5.6 6.0 0.3 16.4 1.0 8 23.1 12.0 1.9 11.6 7.0 6.8 0.3 17.9 0.4 8 22.7 11.6 1.8 10.9 6.6 6.9 0.3 19.1 1.9 8 17.3 19.1 2.0 16.0 7.2 9.0 0.4 14.8 1.1 8 15.9 - 2.1 15.9 7.4 13.6 2.2 17.3 3.3

The sewage treatment apparatus 1 according to the present invention can be used to clean up contaminated sewage or river water by building a system alone or in combination with other devices. For example, as shown in Figure 6, for the relatively high pollution of sewage in which the sewage purification device 1 of the present invention is not sufficiently purified, pretreatment through various pretreatment facilities 5 widely applied to sewage treatment. The sewage collected in the sump 6 through the process can finally be treated by passing through the sewage purification apparatus 1 of the present invention.

According to the sewage purification apparatus using the soil according to the present invention described above, a structure in which the soil layer having good sewage purification ability is complemented with the disadvantages of the low permeability coefficient of the soil and applied in a multi-layered structure to the water passage layer capable of appropriately activating the soil layer is applied. As a result, the sewage purification apparatus using the soil which is economical and can be processed at high speed by improving the permeability by increasing the permeability while maintaining the excellent purification ability of the soil as it is.

Thus, when applying the sewage purification apparatus of the present invention, it is possible to utilize the sewage purification using soil that has been used only for a limited time up to a high level of treatment (BOD 3 mg / L or less: see Table 1), and about 2 grades of water quality. Maintain a river that can play in the water.

In addition, when applied to the soil block as a soil layer, it is possible to control various characteristics (e.g., particle size distribution and water content, hardness, mixed components) for the soil used for the soil block, and to process data according to the number of stages. The sewage treatment device can be designed according to the capacity to prevent the overinvestment caused by the overdesign.

In addition, since the soil is used as a filter medium, the service life of the sewage treatment device can be maintained semi-permanently. After the shutdown or closing of the sewage treatment device, the soil in the device is rich in nutrients, so it can be used for crop cultivation.

Claims (4)

Septic tank 10 in which the discharge port 11 is formed in the lower side; A water passage layer 20 including artificial granules 21 having excellent water permeability and filled in the septic tank 10; A soil layer (30) laminated in the septic tank (10) in multiple layers at regular intervals between the water passage layers (20); Sewage sprinkling means (40) installed on the upper side of the septic tank (10) for supplying sewage to the water passage layer (20) and the soil layer (30); And An air dispersing means (50) installed in the septic tank (10) to supply air to the water passage layer (20) and the soil layer (30); Including: Here, the artificial granulated soil 21 of the water-permeable layer 20 is a porous artificial artificial air powder formed by mixing the soil powder and the organic powder with water to form and sintered to a predetermined size and formed in the pores of the organic powder burned during the firing process. Sewage purification apparatus using soil, characterized in that containing the soil. delete The method of claim 1, wherein the soil layer 30, the block-type container 32 of the breathable, the loss prevention sheet 33 to block the soil loss while passing through the water to the inner surface of the container 32, and the Sewage purification device using soil, characterized in that formed of a soil block 31 comprising a mixed soil (34) firmly filled in the loss prevention sheet. The water passage according to claim 3, further comprising an air passage 61 having a predetermined width installed between the water passage layer 20 and the soil layer 30, and a ventilation pipe 62 connecting the air passage 61 to the outside. Layer 20 and the soil layer 30, characterized in that it further comprises a ventilation means for ventilating the soil, sewage purification apparatus using the soil.

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