KR101368347B1 - Water treatment apparatus - Google Patents

Abstract

The present invention provides a water treatment device which includes the following: a reaction tank including a first unit (110) through which raw water flows in, at least two middle units (120), and a last unit (130) for discharging processed water, which are successively and in series, in which the height from the ground to the full level of the reaction tank is gradually decreased from the first unit (110) to the last unit (130); a carrier housing (220) dividing an aerobic tank and an anaerobic tank inside each unit of the reaction tank, and including multiple punch holes toward the front side; at least three cells with the bottom surface separated from the bottom of the units, divided by a vertical partition wall installed inside the cells; at least two connection units connecting the neighboring cells, located on the different height; a porous carrier for growing anaerobic microorganisms located inside the cells; and at least two aeration units located on the lower side of the units.

Description

Water treatment apparatus

The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus for purifying raw water using aerobic microorganisms and anaerobic microorganisms.

With the recent development of industry and the improvement of living standards, the secondary treatment process in the past has improved the water quality of the discharged waters, increasing public awareness of environmental pollution, and strengthening the discharge standard of treated water quality. Due to lack of water resources, the necessity of recycling of treated water is emerging, and the necessity of advanced treatment is increasing day by day.

In order to improve the water quality of the discharged water, nutrients as well as organic matter must be removed. To this end, it is necessary to actively adopt treatment methods that can remove nitrogen and phosphorus together. Therefore, the existing sewage treatment plant is required to improve the treatment process for the secondary treatment process and install additional facilities.

Conventional high-treatment methods can be divided into residual SS and residual dissolved organic matter removal process, nitrification process, nitrogen removal process, phosphorus removal process, nitrogen and phosphorus simultaneous removal process. As a method for removing nitrogen and phosphorus, the reaction tank may generally be composed of an anaerobic tank, an anoxic tank, an aerobic tank, and an internal return for removing nitrate nitrogen and a final settling sludge return. Phosphorus is released under anaerobic conditions in anaerobic tanks, microorganisms can take excess phosphorus in aerobic tanks, and denitrification of nitrate nitrogen in internal aeration tanks in aerobic tanks.

 On the other hand, Korean Patent No. 10-0603182 (hereinafter referred to as Document 1) describes an advanced treatment process using aerobic or anaerobic microorganisms as a waste yagurt container as a carrier. However, although the carrier described in this document may have a large specific surface area and a large amount of microorganisms are attached, there is a high risk of the microorganisms being swept away with the raw water.

In addition, the Republic of Korea Patent No. 10-0603182 (hereinafter referred to as Document 2) expects a conveying device with an anaerobic tank, an aerobic tank and an anaerobic tank, but this may cause a huge installation cost, operating cost, and installation space.

Accordingly, an object of the present invention is to provide a water treatment apparatus having a simple process and structure using microorganisms.

The present invention for achieving the above object, the reaction tank, the first unit is introduced into the raw water and at least two intermediate units and the last unit is formed in series communication in series with the first unit from the first unit toward the last unit It is formed so that the height is lowered sequentially from the ground to the full water level (순차적 水位), each unit of the reaction tank is formed by partitioning the aerobic tank and anaerobic tank by the carrier housing, a plurality of perforations are formed in the carrier housing in all directions The bottom surface is formed to be spaced apart from the bottom surface of the unit, at least three cells divided by the vertical partitions provided therein are formed, and at least two communication portions communicating with the adjacent cells are formed at different heights from each other. The cell contains a porous carrier in which anaerobic microorganisms live, and the lower part of the unit At least to provide a water treatment apparatus is formed aeration of two

Preferably, the ratio of the perforated area and the non-perforated area in the total surface area of the carrier housing may be 1: 3.

Preferably, the reactor may be arranged in the communication path of the plurality of units bent in the form of "⊃".

Preferably, the porous carrier may be made of at least one of volcanic stone, zeolite and bone.

Preferably, the porous carrier may be accommodated in the cell in a plurality of nets.

The water treatment apparatus according to the present invention includes a porous tank in which an aerobic microorganism inhabits a porous porous carrier housing, while simultaneously providing an anaerobic condition and an aerobic condition in each reactor having a plurality of units of which the height is sequentially lowered. It is configured to accommodate, and provides an advantageous effect that can be installed with a simple fixing and structure while increasing the high processing efficiency.

In addition, the water treatment apparatus according to the present invention comprises a plurality of cells in which the porous carrier is accommodated in the carrier housing, and the microorganisms inhabiting the porous carrier by configuring the communication path connecting the adjacent cells are formed at different heights from each other, It provides a beneficial effect of increasing the raw water's exposure path to the high treatment efficiency.

In addition, the reaction tank of the water treatment apparatus according to the present invention provides a beneficial effect of maximizing the efficiency of the installation space by connecting a plurality of units of the cube form in the form of "⊃".

In addition, the water treatment apparatus according to the present invention has an advantage that the porous carrier is divided into a plurality of meshes to accommodate the porous carrier, so that the porous carrier can be easily added or removed from the carrier housing.

1 is a view showing a water treatment device according to an embodiment of the present invention,
2 is a view showing the arrangement of the units of the reactor shown in FIG.
3 is a view showing the initial unit shown in FIG. 1 and a carrier housing installed therein;
4 is a view showing a porous carrier divided into nets,
5 and 6 is a performance report comparing the treatment results between the raw water and the treated water using the embodiment shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

1 is a view showing a water treatment apparatus according to an embodiment of the present invention, Figure 2 is a view showing the arrangement of the units of the reactor shown in FIG.

1 and 2 clearly illustrate only the main feature parts for the purpose of conceptual clarification of the present invention and as a result various variations of the illustrations are to be expected and the scope of the present invention Need not be limited.

1 and 2 together, the water treatment apparatus according to a preferred embodiment of the present invention is provided with a reaction tank 110 for purifying raw water with treated water using microorganisms. The raw water supplied to the reaction tank may be supplied to the reaction tank through a pump by removing various suspended substances contained in the sewage to some extent. Sources of raw water can be drinking water, domestic wastewater and sludge containing various organic matters. here, Drinking waste water is an organic waste containing fine food sludge as a high concentration of sewage produced from food waste, and is also called desorption water and desorption liquid.

First, the reactor includes a first unit 110 into which the raw water is introduced and a final unit 130 after the raw water has been purified and discharged into the treated water, and a plurality of intermediate units between the first unit 110 and the last unit 130. (120: 121,122,123,124,125,126).

The first unit 110 and the intermediate unit 120, the last unit 130 is formed in communication with each other in series, it may be formed so that the height is lowered toward the last unit 130 from the first unit (110).

In other words, the height (H1, H2, H3, H4 ... H8 in FIG. 1) from the ground to the full water level of each unit in the direction proceeding from the first unit 110 to the last unit 130 is It may be formed to be lowered sequentially. This is to allow the raw water supplied to the initial unit 110 by the pump to flow to the last unit 130 by gravity without any additional power.

In one embodiment, the plurality of units (110, 120, 130) constituting the reaction tank may be formed of a cube. Since the units 110, 120, and 130 formed of a hexahedron have good mutual coupling, they may be arranged in various forms corresponding to the installation space.

Units 110, 120, and 130 of the reactor may be formed in series communication so that the movement path of the raw water may be combined to have a "⊂" shape. The arrangement of the units 110, 120, and 130 is a configuration to increase the space utilization by minimizing the installation space of the water treatment device.

3 is a view illustrating the initial unit 110 and the carrier housing 200 installed therein shown in FIG. 1.

1 and 3, each unit 110, 120, and 130 forming the reaction tank may be divided into an aerobic tank A and an anaerobic tank B by the carrier housing 200. The carrier housing 200 may be formed on a wall surface formed with a conduit communicating with another unit (eg, 121 of FIG. 3). The outside of the carrier housing 200 functions as an aerobic tank A, and the carrier housing 200 ) May function as an anaerobic tank (B). Outside of the carrier housing 200, that is, the aerobic tank (A), aerobic microorganisms using organic materials of raw water inhabit, and nitrify nitrogen components and remove aerobic denitrification. Anaerobic conditions are secured inside the carrier housing 200 so that anaerobic microorganisms may inhabit.

The carrier housing 200 is installed to form a space in the longitudinal direction such that the lid surface, the side surface, the bottom surface surrounds a wall surface formed with a conduit communicating with another unit (eg, 121 in FIG. 3), and the lid surface, A plurality of perforations 210 are formed on the side and bottom. In this case, the ratio of the perforated area and the non-perforated area of the carrier housing 200 may be 1: 3. The inside of the carrier housing 200 may be partitioned into a plurality of cells 220, 230, 240 in the vertical partition wall. In one embodiment, the inside of the carrier housing 200 may be formed of three cells 220, 230, 240 by two vertical partitions. Each cell 220, 230, 240 is connected so that the raw water flows by the communication unit.

 In this case, the plurality of communication units 250 and 260 connecting the respective cells 220, 230, and 240 may be formed to have different heights. For example, the communication unit 250 connecting the first cell 220 and the second cell 230 is formed at the bottom and the communication unit 260 connecting the second cell 230 and the third cell 240. ) Is formed at the top. This is to make the movement path of the raw water exposed to the anaerobic microorganisms as long as possible by moving each cell (220, 230, 240).

Each cell 220, 230, 240 may contain a porous carrier. Herein, the porous carrier refers to a material having many holes formed therein and having a large specific surface area. As the porous carrier, volcanic stones, zeolites, bones and the like can be used. Such a porous carrier provides an environment in which adsorption of aerobic microorganisms is easy and a biofilm can be formed.

Meanwhile, the bottom surface of the carrier housing 200 is formed to be spaced apart from the bottom surface of the unit at a predetermined interval (d in FIG. 3). This is to induce the flow of raw water entering and exiting the aerobic and anaerobic conditions in the lower region of the carrier housing 200 through the perforations 210 formed on the bottom surface of the carrier housing 200. If the bottom surface of the carrier housing 200 is blocked on the bottom surface of the unit, the flow of raw water is stagnant and the raw water may rot at the bottom of the cell.

On the other hand, as shown in Figure 4, the porous carrier may be accommodated in each cell in a state that is divided into a plurality of nets 270 in a predetermined capacity. This is to facilitate the insertion or withdrawal of the porous carrier in the cells 220, 230, 240. Although not shown in the drawing, a porous carrier may be accommodated in the cell in the form of a cartridge in which holes are formed in place of the mesh 270.

On the other hand, a plurality of aeration nozzles for supplying oxygen may be provided at the lower end of the wall surface of the unit forming the aerobic tank (A). The aeration nozzle 300 serves to supply dissolved oxygen required for aerobic conditions, to physically decompose organic matter, and to help discharge of water contained in raw water. The pumped raw water is supplied to the first unit 110 through the raw water supply pipe 400.

The performance comparison comparing the treatment result between the raw water and the treated water using the water treatment device having such a configuration is shown in Table 1 below, and the specific performance report is as shown in FIGS. 5 and 6.

Test Items unit Raw water result Treated water result Test Methods BOD mg / L 904 1.9 Water pollution process ship standard: 2012 COD mg / L 601 7.5 Water pollution process ship standard: 2012 Suspended matter mg / L 2610 Not detected Water pollution process ship standard: 2012 A total person mg / L 49.5 2.41 Water pollution process ship standard: 2012 Total nitrogen mg / L 35.5 3.39 Water pollution process ship standard: 2012

110: first unit
120: intermediate unit
130: last unit
200: carrier housing
210: perforation
220,230,240: cells
250,260: Communication part
270 net
300: aeration nozzle
400: raw water supply line

Claims (5)

The reactor is formed such that the first unit 110 into which the raw water is introduced, the at least two intermediate units 120, and the last unit 130 from which the treated water flows out are sequentially communicated in series, and the last unit in the first unit 110. To the 130 is formed so that the height is lowered sequentially from the ground to the full water level (순차적 水位),
Each unit of the reaction tank is formed by partitioning the aerobic tank and anaerobic tank by the carrier housing 200,
The carrier housing 200 is formed with a plurality of perforations in all directions, the bottom surface is formed to be spaced apart from the bottom surface of the unit, at least three cells separated by a vertical partition provided therein is formed, adjacent At least two communication portions communicating with the cell are formed at different heights, and the cell contains a porous carrier in which anaerobic microorganisms live.
At least two aeration units are formed in the lower portion of the unit.
The method according to claim 1,
The ratio of the perforated area and the non-perforated area in the total surface area of the carrier housing 200 is 1: 3 water treatment apparatus.
The method according to claim 1,
The reactor is a water treatment device in which the communication path of the plurality of units are arranged in a "⊃" shape bent.
The method according to claim 1,
The porous carrier is made of at least one of volcanic stone, zeolite and bone.
5. The method of claim 4,
The porous carrier is contained in a plurality of mesh is received in the cell treatment device.

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