KR200191781Y1 - Induced air flotation separator - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

children. a. IAF separator

2. The technical gist of the invention

The present invention is provided with a bubble generator for generating air by inhaling air in a forced suction method to float the oil contained in the waste water through a large amount of bubbles, thereby improving the oil removal efficiency. a. The purpose is to provide an IAF separator.

3. Summary of solution of design

The present invention is a tank having a plurality of cells partitioned every predetermined section; A flow rate adjusting means mounted on the tank so that the waste water maintains a constant level in the cell; Bubble generating means mounted to each of the plurality of cells to generate bubbles mixed with the wastewater and air so that oil in the wastewater is suspended; Discharge means installed at both sides of the bubble generating means for discharging the bubble to the outside of the cell; And connected to the discharge means, it provides a floating oil removal device comprising an oil and water separation means for separating the oil and water to collect the discharged bubbles.

4. Important uses of the devise

The present invention is used to purify waste water.

Description

Induced Air Flotation Separator

The present invention relates to an I. F. separator for floating and removing the oil contained in the plant wastewater or domestic wastewater, in particular, to generate bubbles with oil, and to scratch only the bubbles. By removing oil, the oil can be removed easily and reliably. a. It relates to an IAF separator.

In general, in order to solve the environmental problems caused by the oil contained in the wastewater discharged from ship plants, petrochemical plants, wastewater treatment plants and homes, air is injected into the tank in which the wastewater is stored, so that bubbles with oil are formed. The wastewater is purified by removing the bubbles.

In the conventional nozzle air type floating oil removing device using the above principle, a circulation pump and an air injection nozzle are mounted outside the tank for storing waste water, and the air is injected into the tank through the supply injection nozzle. In the waste water, bubbles with oil are generated. In addition, a skimmer is mounted inside the tank, and the skimmer scrapes bubbles floating on the water surface and discharges them to the outside. And, the outside of the tank is provided with a pit (pit), the sewage pit collects the bubbles discharged by the skimmer to separate the oil and water therefrom, the oil is discharged to the outside, the water is circulated back to the tank do.

Here, the circulated water is to repeat the above purification process with the other end of the waste water injected into the tank.

However, in the conventional floating oil removing device as described above, since the amount of air intake into the tank by the circulation pump is small and the amount of air bubbles is generated, a large amount of oil cannot be floated, and the contact ratio between oil and bubbles There was a problem in that the oil removal efficiency is reduced.

Accordingly, the present invention has been made to solve the above problems, by having a bubble generator for generating air by inhaling air by a forced suction method to float the oil contained in the waste water through a large amount of bubbles, Child to improve the removal efficiency. a. The purpose is to provide an IAF separator.

1 is a plan view showing an IAF separator according to the present invention.

Figure 2 is a cross-sectional view showing the bubble generator which is the main part of the present invention.

Figure 3 is a front view schematically showing the internal structure of the IAF separator by cutting a part of the present invention.

Figure 4 is a state of use of the IAF separator of the present invention.

* Explanation of symbols for the main parts of the drawings

100 tank 110 waste water supply pipe

120: drain pipe 130a, 130b, 130c, 130d: cell

131: drain cap 140: flow regulator

150: chemical injection tube 200: bubble generator

210: motor 220: power transmission means

230: rotor 240: dispulser

250: stand frame 251: air intake

260: hood 270: support frame

280: skimmer 281: pin

282: bubble discharge pipe 300: scum tank

310: oil adsorption belt 320: pipe

330: Pump

In order to achieve the above object, the present invention, a tank having a plurality of cells partitioned every predetermined section by a partition having a drain plug at the bottom; A flow rate adjusting means mounted on the tank so that the waste water maintains a constant level in the cell; Bubble generating means mounted to each of the plurality of cells to generate bubbles mixed with the wastewater and air so that oil in the wastewater is suspended; Discharge means installed at both sides of the bubble generating means for discharging the bubble to the outside of the cell; And connected to the discharge means, it provides a floating oil removal device comprising an oil and water separation means for separating the oil and water by collecting the discharged bubbles.

Hereinafter, with reference to the accompanying Figures 1 and 4 will be described in detail a floating oil removal apparatus according to the present invention.

The child of this invention. a. The IAF separator is a device for floating and filtering contaminant particles in wastewater due to bubble generation by forced suction method, and as shown in FIG. 1, a wastewater supply pipe 110 for supplying wastewater is provided at one side. The other side opposite to the waste water supply pipe 110 is provided with a drain pipe 120, the tank 100 coupled between the waste water supply pipe 110 and the drain pipe 120 in a plurality of cells (130) It is provided. The tank 100 in this embodiment has a structure coupled to the first to fourth cells 130a, 130b, 130c, 130d partitioned by a partition at predetermined intervals. A flow controller 140 is mounted on the wastewater supply pipe 110 to adjust the flow rate of the wastewater so that the wastewater supplied through the wastewater supply pipe 110 maintains a constant level in the tank 100. In addition, a chemical preparation injection tube 150 is formed between the first cell 130a and the wastewater supply pipe 110 to inject a chemical preparation to be described later.

In addition, as shown in FIG. 3, the partitions of each of the first to fourth cells 130a, 130b, 130c, and 130d are positioned in a straight line so that the purification process of the wastewater may be sequentially performed. The drain plug 131 is formed to be opened and closed at a predetermined time interval therebetween. The lower surface of each cell is inclined such that purified water flows from the first cell 130a to the fourth cell 130d when the drain cap 131 is opened. In addition, each of the first to fourth cells 130a, 130b, 130c, and 130d is equipped with a bubble generator 200 to generate a large amount of bubbles so that oil in the waste water may be attached and floated.

The bubble generator 200, as shown in Figure 2, is mounted on the outside of each cell, the motor 210 to generate a rotational force by receiving power from the outside and to transmit the rotational force of the motor 210 It is installed on the power transmission means 220, the inside of each cell, the rotor 230 to rotate by receiving power from the power transmission means 220, and is installed on the lower outer periphery of the rotor 230, the rotor Disperser 240 for providing a movement path for the waste water can be pushed downward when the rotation of the 230, and a space of a predetermined size on the upper side of the disperser 240, the upper side of the air A cylindrical stand frame 250 having an air inlet 251 that can be sucked therein, and is mounted on the outer circumferential surface of the lower end of the stand frame 250, and a plurality of holes are formed to the disperser 240. When the waste water is pushed out, through the air inlet 251 The air to be provided with a hood (260) that the waste oil in the attached air bubbles are discharged.

Here, the power transmission means 220 is a driven pulley 221 and driven pulley 222, the belt 223 connecting the two pulleys (221, 222), the driven pulley 222 and the rotor 230 ) Is made of a driven pulley shaft 224 to transfer the rotational force of the motor 210 to the rotor 230. A belt cover 225 is mounted to prevent the driving pulley 221, the driven pulley 222, and the belt 223 from being exposed to the outside, so that the rotational force of the motor 210 is transmitted to the driven pulley shaft 224. While being prevented from being lost by the surrounding environment.

In addition, a support frame 270 having a driven pulley shaft 224 is fixed to an upper surface of the cell 130 to support the motor 210 and the belt cover 225. Here, a bearing (not shown) for smoothly rotating the driven pulley shaft 224 and a bearing housing 271 for protecting the bearing are provided inside the support frame 270.

On the other hand, when supplying the waste water, the non-toxic or low-toxic chemical preparation is injected through the chemical preparation injection pipe 150, the chemical preparation facilitates the separation of oil and suspended solids in the waste water, the formation of the bubbles To help. As an example of the chemical preparation, the chemical preparation is a cation organic compound, a metal salt of a cation organic compound, a compound of an organic compound and an inorganic compound, a cation polymer polyelectrolyte, a polymer acryl amide , Cation, amion, nonion-based organic surfactant, or any combination of two or more thereof. In addition, the case to be treated with a solution containing a strong smelling or explosive gases, the waste water, sealing the entire device and injecting N ₂ gas or the like in place of air.

3 and 4, a skimmer 280 having a rake shape at both ends is formed at both sides of the stand frame 250 provided in each of the cells 130 by a predetermined distance. The skimmer 280 is fixed to the inner wall of each cell by a pin 281 penetrating the center thereof so that the bubbles formed by the bubble generator 200 are rotated at a low speed by receiving an external power source. , This is scraped and discharged through the bubble discharge pipe 282 provided on the outside thereof. Here, the bubble discharge pipe 282 is formed by the interval between the inner wall surface and the outer wall surface of the cell, and extends to the bottom of the cell.

On the other hand, the bubbles discharged through the bubble discharge pipe 282 is collected in the scum tank 300 mounted to the lower portion of each cell. Here, the scum tank 300 is provided with an oil adsorption belt 310 mounted on the upper side thereof to adsorb oil. Here, the oil adsorption belt 310 can be replaced by a simple operation. And, one side of the scum tank 300 is provided with a pipe 320 is connected to the drain holder (drain holder) formed to be opened and closed, the oil is removed by the oil adsorption belt 310 to pump the remaining water ( 330) to an adjacent cell.

If described in detail the operation of the IAF separator according to the present invention as follows.

First, the wastewater is supplied to the first cell 130a of the tank 100 through the wastewater supply pipe 110, and the water level is adjusted to the inside of the first cell 130a by controlling the amount thereof by the flow controller 140. Supply to fill up.

Then, when external power is applied to the motor 210 of the bubble generator 200, the rotor 230 is rotated by the power transmission means 220, wastewater by the rotational force of the rotor 230 Is pushed downward (arrow A) through the disperser 240. At this time, a negative pressure is generated inside the stand frame 250, and air is sucked into the stand frame 250 through the air inlet 251 (arrow B) and mixed with the waste water. The mixture of air and wastewater is discharged through the holes of the hood 260 (arrow C).

Then, the bubble is attached to the oil is floating to the water surface due to the specific gravity difference with the water, at this time, the skimmer 280 is applied to the external power to scrape the bubble while rotating at low speed to discharge through the bubble discharge pipe 282. . Here, the bubbles discharged through the bubble discharge pipe 282 is transmitted to the scum tank 300. In addition, the bubbles collected in the scum tank 300 are exposed to the air and liquefied. Subsequently, the oil adhering to the bubble is adsorbed onto the oil adsorption belt 310 while floating on the water surface in the scum tank 300 due to the specific gravity difference.

On the other hand, the water purified in the first cell (130a) is sent to the second cell (130b) by opening the drain cap 131, the oil by the oil adsorption belt 310 in the scum tank (300) The separated water is also pumped to operate the 330 is sent to the second cell 130b through the pipe 320 of the scum tank 300.

The purification of the waste water is repeated sequentially while passing through the second, third and fourth cells 130b, 130c and 130d of the tank 100, but the fourth cell 130d and the fourth cell are repeated. Water purified in the scum tank 300 provided at the lower portion of the 130d is discharged to the outside through the drain pipe 120.

The present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, according to the present invention, since air is sucked in a manner by forced suction to generate bubbles with oil, the amount of generation of bubbles is increased to improve the efficiency of oil removal, and to purify oil from wastewater. Since the process is performed sequentially through a plurality of cells, there is an effect that can remove the oil reliably.

In addition, since the oil removal device itself is small and lightweight, but its structure is simple, not only the installation is simple, but also the initial and maintenance costs are low, there are other effects.

Claims (5)

A tank having a plurality of cells partitioned at predetermined intervals by a partition having a drain plug at a lower portion thereof; A flow rate adjusting means mounted on the tank so that the waste water maintains a constant level in the cell; Bubble generating means mounted to each of the plurality of cells to generate bubbles mixed with the wastewater and air so that oil in the wastewater is suspended; Discharge means installed at both sides of the bubble generating means for discharging the bubble to the outside of the cell; And Oil-water separation means connected to the discharge means, collecting the discharged bubbles to separate the oil and water The child, including. a. IAF separator. The method of claim 1, And a chemical preparation injection tube installed at an inlet tube of the tank for supplying a chemical preparation for promoting generation of bubbles and bonding of the bubbles and the oil. a. IAF separator. The method of claim 1, The bubble generating means, A motor that provides torque, Power transmission means for transmitting power of the motor; A rotor mounted inside the cell and rotating by receiving power from the power transmission means; A disperser mounted on an outer circumference of the rotor and providing a movement path of waste water pushed out by rotation of the rotor; A stand frame mounted on an upper side of the disperser and having an air inlet formed at one side thereof; Hood mounted to the lower side of the stand frame, a plurality of holes are formed to generate the oil-attached bubbles by the rotation of the rotor The child including. a. IAF separator. The method of claim 1, The discharge means, Skimmers located on both sides of the bubble generating means and scraping the floating bubbles while rotating at a low speed, Located on one side of the skimmer, the eye comprising a bubble discharge pipe for discharging the bubble scraped by the skimmer to the oil-water separation means. a. IAF separator. The method according to claim 1 or 4, The oil and water separation means, A scum tank connected to the bubble discharge pipe to collect the discharged bubbles; An oil adsorption belt mounted on an upper side of the scum tank and adsorbing oil from the bubbles; A pipe communicating with one side of the scum tank and providing a movement path of water from which oil has been removed; A pump mounted on one side of the pipe to direct the water to an adjacent cell The child including. a. IAF separator.