KR200384037Y1 - Water separation apparatus of waste water disposal system - Google Patents

Abstract

The present invention relates to a sewage separation device of a wastewater treatment system, comprising: a settling tank having one or more inclined plate housings separated from a bottom surface to settle sediment contained in the wastewater; and a wastewater treated through the settling tank. It characterized in that it comprises a collecting tank for collecting and separating oil.

According to the present invention configured as described above, by precipitating contaminants in advance before going to the main system for wastewater treatment, the pretreatment can be strengthened, thereby reducing the load on the main system and maximizing the efficiency of wastewater treatment. Can be increased and the size can be reduced.

Description

Sewage water separator for wastewater treatment system {WATER SEPARATION APPARATUS OF WASTE WATER DISPOSAL SYSTEM}

The present invention relates to a wastewater treatment system that is capable of separating the detergent, oil particles and scum contained in the general wastewater from water, in particular, before the wastewater flows to the main system. The present invention relates to a sewage separation apparatus of a wastewater treatment system that allows sedimentation.

The applicant of the present invention has disclosed a system for treating wastewater in "Patent Application No. 90731," filed in 2003. In order to further enhance the effect of the system, the wastewater except for sediments by precipitating contaminants in advance. It is only necessary to proceed to the next step.

For example, when the specific gravity of the sedimentable solids contained in the waste water is greater than the specific gravity 1 of the water, that is, when the sedimentation force is greater than the frictional drag on the liquid, the floating solids sink to the bottom by gravity is called "sedimentation". Solids that have sunk in are called "sludge". Sedimentation basically proceeds only if the sedimentation rate is greater than the outflow rate.

Therefore, if the waste water is left in the sedimentation tank, some suspended solids are entangled and naturally sedimented by gravity to separate the solids, thereby reducing the pollution concentration before proceeding to the next step.

At this time, the sedimentation velocity is slightly different depending on the particle shape, but the suspended solids are most affected by the particle size.In addition, specific gravity, concentration, water temperature, residence time, effective depth, wind direction and flow velocity on the water surface Not only are they affected, but the degree of precipitation is proportional to the precipitation surface area.

Therefore, in order to efficiently separate and remove solid materials contained in general wastewater, it is necessary to use the most appropriate method of artificially applicable factors among the precipitation influence factors.

The present invention has been devised in view of such a point, and a sewage separation device of a wastewater treatment system which enables efficient separation treatment regardless of various sizes of solids and suspended solids, various detergents or oil particles contained in general wastewater. The purpose is to provide.

In addition, the present invention provides a sewage separation apparatus of a wastewater treatment system, which performs the sedimentation treatment process in advance, thereby improving the lifespan, treatment efficiency, and miniaturization of the rear end system, and enabling sufficient efficient wastewater treatment without separate chemical treatment. Has a different purpose.

The sewage separation apparatus of the wastewater treatment system according to the present invention for achieving the above object is a sedimentation tank having a slant plate tank and a sedimentation tank to precipitate contaminants of solid matter and suspended solids in the wastewater introduced through the wastewater inflow line. Characterized in that it comprises a collecting tank for collecting wastewater and oil-water separation through the treated wastewater.

Hereinafter, with reference to the accompanying drawings, the water collecting separator of the wastewater treatment system according to the present invention is as follows.

The wastewater treatment system of the present invention, as shown in FIG. 1, includes a water collecting separator 10, an ozone contact device 20, a dissolved air flotation device 30, and a pressure filtration device 50.

The water collecting separator 10 is an apparatus for effectively pretreatment of contaminants such as solid matter, suspended matter, and oil contained in wastewater, and increases sedimentation surface area to improve sedimentation effect and serves as oil separation and storage.

At this time, it is preferable that the inclined plate 15 and the inclined plate housing 14 of the water collecting separator 10 are made of a material having excellent corrosion resistance and abrasion resistance, such as high density polyethylene, so as to prevent invasion of contaminants. .

The ozone contact tank 20 is a chemical treatment of contaminants contained in the waste water by ozone oxidation technology when the wastewater flows from the water collecting device 10 to the ozone contact tank inlet line L2, and ozone is decomposed. It is based on the principle that organic matter is oxidatively decomposed by oxygen and hydroxyl group (OH ⁻ ) generated.

In addition, an ozone generator 21 for supplying ozone to the ozone contact tank 20 is connected to one side of the ozone contact tank 20 by an ozone inflow line L3.

The dissolved air flotation device 30 is connected to the ozone contact tank 20 and the ozone water inflow line (L4), and to remove the dissolved air and adhesive oil contained in the waste water from the oxidized waste water. Microbubble is used to treat wastewater. That is, when a large number of micro bubbles are generated due to the decompression effect of the dissolved air introduced into the dissolved air flotation device 30 by the micro bubble injection valve 40 of the micro bubble injection line L8 connected to one side, the micro bubbles are generated. After adsorbing oil particles, it has a function to lift and remove the oil particles.

On the other hand, one side of the dissolved air flotation device 30 is provided with an oil drying tank 60 having a function of storing the separated oil and sludge and natural dehydration and drying treatment. The oil drying tank 60 discharges sludge contained in the treated water supplied through the pollutant discharge line L4 from the dissolved air flotation device 30 on one side, and the raw water tank connecting line recovers the filtered water to the raw water storage tank. (L8) is connected.

The pressure filtration device 50 is provided with an activated carbon layer, anthracite layer, sand layer, gravel layer sequentially from the upper side to the lower side therein to filter the waste water.

The pressure filtration device 50 sieves contaminants in the wastewater, such as COD, suspended solids, n-Hexan, ABS, etc., supplied from the dissolved air flotation device 30 to the filter connecting line L6. As the final treatment using the manure and adsorption function, the final treated water is collected into the treated water using tank 70, and the pressure filtration device 50 is configured to automatically clean according to the operating time. That is, the pressure filtration device 50 is automatically washed by the filtered water supplied to the backwashing line L7 through a predetermined state or any operation connected to the filtered water storage tank 70 and the backwashing line L7. Will be done.

In addition, one side of the pressure filtration device 50 is provided with a filtered water storage tank 70 for storing the filtered water discharged from the dissolved air flotation device 30 and filtered in the pressure filtration device 50, the filtered water is It is used as the washing water for cleaning the pressurized water and the pressure filtration device 50 required in this system.

At this time, the pressurized pump 71 and the ejector 72 pressurize and supply the mixed air and the washing water to the microbubble spray line L7 connecting the dissolved air flotation device 30 from the filtered water storage tank 70. It is installed.

On the other hand, the ozone contact tank 20, dissolved air flotation device 30, pressure filtration device 50, the oil drying tank 60 and the treated water tank 70 is already filed by the same applicant of the present invention Since it is described in detail in "patent 2003-90731", detailed description is abbreviate | omitted in this embodiment.

Here, the water collecting separator of the present invention will be described in detail with reference to FIG. 2.

The water collecting separator 10 includes a sedimentation tank 11 connected to the wastewater inflow line L1 on one side thereof, and a collection tank 12 connected to the connection pipe so that the wastewater treated with sedimentation is introduced on one side thereof.

An inclined plate housing 14 in which a plurality of inclined plates 15 is disposed is provided at an approximately center of the settling tank 11. At this time, the inclined plate housing 14 is installed so as to be spaced apart from the bottom surface of the sedimentation tank 11 by a predetermined height by being seated on the base 16 welded to the wall of the sedimentation tank 11, waste water inlet line (L1) The wastewater supplied from the tank rises from the lower side of the inclined plate housing 14, at which time contaminants are settled below the settling tank 11 by the inclined plate 15.

At this time, one side of the settling tank 11, that is, a predetermined distance away from the wall surface to which the wastewater inflow line (L1) is connected to rectify the wastewater to flow directly to the inclined plate 15 or to prevent the formation of vortices The plate 13 is installed, but the waste water introduced is spaced apart from the bottom of the settling tank 11 by a predetermined height so as to be guided to the lower side of the settling tank 11.

In the sedimentation tank 11, the overflowware 17 is installed on the discharge side of the wastewater, and the wastewater excluding the sediment is introduced into the collection tank 19 beyond the overflowware 17.

The collection tank 19 is to separate the waste water to be introduced into the main system and to store the collection water, it is preferable that a plurality of storage capacities are provided, and a connection pipe 18 is connected between each collection tank 19. Wastewater becomes mobile.

On the other hand, the upper surface of the settling tank 11 is installed so that the cover 12 can be opened and closed for maintenance, such as repair or replacement of the inclined plate 15, the cover 12 to check the inside of the settling tank (11) It is preferred that the grating be treated.

The operation of the wastewater treatment system will be described in more detail with reference to FIGS. 1 and 2 as follows.

First, the wastewater flowing into the sedimentation tank 11 through the wastewater inflow line L1 shortens the sedimentation time for the suspended particles to settle by the inclined plate 15, shortening the sedimentation time and increasing the effective sedimentation area. Can increase the settling efficiency per unit area. The wastewater treated through the inclined plate 15 is introduced into the collection tank 19 and separated from the oil.

The wastewater collected in the collection tank 19 is supplied to the ozone contact tank 20, and the ozone supplied from the ozone generator 21 reacts with the pollutants contained in the wastewater to be oxidized first.

Then, when the waste water oxidized by ozone is supplied to the dissolved air flotation device 30 through the ozone water inflow line L4, the pressurized pump 71 and the ejector 72 provided in the microbubble spray line L8 are provided. Air and filtered water is supplied by pressurized, pressurized air and the filtered water is supplied to the dissolved air flotation device 30 through the micro-bubble injection valve 40 to form a fine bubble. This microbubble contacts the remaining wastewater and separates oil particles remaining in the remaining wastewater.

At this time, as the pollutants are first oxidized by the ozone contact tank 20 and then supplied to the dissolved air flotation device 30, the dissolved air flotation device 30 is provided by the microbubble injection valve 40. The flotation force of the oil particles in the residual wastewater by the introduced microbubbles is maximized. As a result, the oil particles can be easily treated regardless of the size of the oil particles contained in the waste water.

Next, the oil particles separated from the dissolved air flotation device 30 are removed and supplied to the oil drying tank 60 through the pollutant discharge line L5, and the sludge is discharged to the outside, and the treated water is connected to the collecting tank. A series of processes are completed by returning to the collection tank 19 via the line L9.

At this time, the remaining treated water used in the system can be reused through the filtered water discharge line (L10).

As such, in the present invention, the solid waste material is incorporated by incorporating a water collecting separator 10 having an inclined plate 15 into a wastewater treatment system in which an ozone contact tank 20, a dissolved air flotation device 30, and a pressure filtration device 50 are installed. It is possible to maximize the sedimentation effect of and to increase the adsorption efficiency by oxidative decomposition of residual organic matter and low molecular weight of polymer material, thereby extending the life of each device constituting the wastewater treatment system.

As described above, according to the present invention, it is possible to reduce the load of the main system and maximize the efficiency of the waste water treatment by strengthening pretreatment by precipitating contaminants before moving on to the main system for waste water treatment. It can increase the service life and can also reduce the size.

The sedimented wastewater is subjected to oxidation treatment by ozone and microbubble generation of dissolved air, and according to the characteristics of various detergents and oil particles contained in the wastewater, the treatment method is combined in a batch process without using a separate chemical agent. In addition, it is possible to efficiently separate contaminants from wastewater regardless of the size of the oil particles.

1 is a schematic view showing a wastewater treatment system according to the present invention.

Figure 2 is a perspective view of the water collecting separator of Figure 1;

3 is a cross-sectional view taken along the line "III-III" of FIG.

<Description of Symbols for Main Parts of Drawings>

10; A water collecting separator 11; Inclined Plate Separation Tank

12; Cover 13; Rectifying plate

14; Inclined plate housing 15; Inclined plate

16; Pedestal 17; Monthly wear

18; Connector 19; Collection tank

Claims (4)

In the wastewater treatment system, A settling tank having one or more inclined plates mounted thereon so as to sediment contaminants contained in the waste water; A sewage separator of the wastewater treatment system, comprising: a collecting tank connected to one side of the sedimentation tank and collecting sewage treated with sedimentation. The method of claim 1, The wastewater inflow side of the sedimentation tank is installed so that the rectifying plate is spaced apart from the bottom surface of the sedimentation tank to guide the wastewater to the lower side of the inclined plate housing. The method of claim 1, On the other side of the sedimentation tank sewage separation apparatus of the wastewater treatment system, characterized in that the overflow wear is installed so as to prevent the movement of sediment and the sedimentation-treated waste water only. The method of claim 1, The sewage separation apparatus of the wastewater treatment system, characterized in that the cover is installed on the upper side of the settling tank so as to be opened and closed.