KR20150012761A

KR20150012761A - Wastewater treatment system

Info

Publication number: KR20150012761A
Application number: KR1020130088740A
Authority: KR
Inventors: 이원필
Original assignee: 주식회사 에이에프티코리아
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2015-02-04

Abstract

It is possible to effectively remove the bubbles on the water surface generated when the wastewater is treated by the circulation and the aeration action to improve the efficiency of the purification treatment and to quickly remove the bubbles on the surface of the treatment tank to overflow the bubbles in the treatment tank, And to a bubble treating apparatus for wastewater which maximizes the effect of removing bubbles.

Description

[0001] WASTEWATER TREATMENT SYSTEM [0002]

The present invention effectively removes bubbles on the water surface generated when the wastewater is treated by the circulation and the aeration action, thereby improving the purification treatment efficiency, while rapidly removing bubbles on the surface of the treatment tank, And a bubbling device for wastewater that maximizes the effect of removing bubbles.

The aeration increases the oxygen by blowing air into the water to be treated, thereby accelerating microbial activity in the water. In this method, an activated sludge process such as decomposition of organic matter by the activity of aerobic bacteria or protozoan to treat wastewater such as livestock wastewater It is to treat used wastewater.

It stores the wastewater that has flowed into the aeration tank through the settling tank, and injects air through the air diffuser to perform aeration to treat the wastewater by supplying oxygen to the water.

In such a wastewater treatment, the purification effect is enhanced by the forced circulation of intense acid and water in the aeration tank in the aeration tank, but when the discharged water is discharged onto the water surface through the upper discharge holes of the breeze, .

That is, the bubbles that are generated excessively on the surface of the aeration tank overflow to the outside of the aeration tank or evaporate the bubbles, generating a bad odor in the periphery, thus causing a new problem of polluting the surrounding environment as a whole.

One example of a bubble removing device for this purpose is shown in Fig. This includes a water supply pipe 11 for supplying a large amount of water to the upper part of the water tank, a circulation pump 12 for circulating water in the water tank 10, And a drain pipe (13) for draining the bubbles.

In this device, since the drain pipe (13) is fixed at the time of removing the bubbles, it is required to maintain a certain level to the upper part of the drain pipe (13), so it is necessary to continuously supply a large amount of water. Water loss occurs, which causes waste of water resources, and power loss of the pump for supplying water is generated.

Another type of defoaming device is disclosed in Korean Patent Registration No. 10-0575900 and shown in Fig.

(10) disposed inside the aeration tank main body (2), and a high-pressure air supply pipe (10) disposed inside the wide-width pipe (10) A bubble eliminating means 30 for removing bubbles B on the water surface by spraying high pressure water through a water supply pipe 54 provided at an upper portion of the aeration tank main body 2, (50).

In such a foam removing device, separate high-pressure water must be injected in order to remove the foam (B), thereby increasing the number of treated water and the loss of water.

Disclosure of the Invention The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a method and an apparatus for disposing bubbles on a water surface, And to provide a bubble processing apparatus for a wastewater which can shorten the bubble processing time.

In order to accomplish the above object, the present invention provides an apparatus for treating a wastewater for removing bubbles generated on a water surface during treatment of wastewater flowing into a treatment tank,

And an impeller rotatably connected to the rotary shaft of the motor and spaced apart from the water surface of the wastewater, wherein the impeller is supported by the supporting base,

The impeller includes a base plate, a plurality of blades protruding from one surface of the base plate facing the water surface and curved in the same direction,

And each of the blades is formed between the imaginary circumferential edge and the edge of the base plate, assuming a virtual circle at the center of the base plate.

In addition, the apparatus of the present invention is characterized in that a plurality of level sensors are provided in the treatment tank, and an actuator for elevating the support table in accordance with the level of the wastewater is detected.

According to an aspect of the present invention, there is provided an apparatus for treating a wastewater for removing bubbles generated on a water surface during treatment of wastewater introduced into a treatment tank,

A motor supported by the supporting body and designed to generate a rotational force; and a motor connected to the rotating shaft of the motor and rotated by the motor, And an impeller provided at a position spaced apart from the water surface of the wastewater,

Further, in the apparatus of the present invention, a plurality of concave grooves are formed on side walls of the respective blades.

First, the bubble removing device of the present invention keeps the blades of the impeller rotating at a high speed at a constant interval from the surface of the water, so that the bubbles are finely crushed at the time of inflow and outflow of the bubbles, Or water supply is not required, so that not only shortening of wastewater treatment time but also water saving can be achieved.

Second, since the impeller 300 can be raised and lowered by the operation of the actuator 400 by the first and second water level sensors 401 and 402, the gap between the impeller 300 and the water surface can be maintained, So that bubble removal can be done smoothly.

Third, since the gap between the impeller 300 and the water surface is kept constant by the buoyant body 500, the installation is simplified rather than the first embodiment.

fourth. By forming the concave groove 321 in the side wall of the blade 320, the bubble removing efficiency is enhanced.

1 is a schematic view showing a conventional foam removing device,
FIG. 2 is a schematic view showing another conventional defoamer,
3 is a schematic view showing an apparatus of the first embodiment of the present invention,
FIG. 4 is a perspective view showing the impeller portion of FIG. 3,
Fig. 5 is a bottom view of Fig. 4,
6 is a schematic view showing another form of the impeller,
Fig. 7 is a schematic view showing the apparatus of the second embodiment of the present invention.

Disclosure of Invention Technical Problem [8] The present invention relates to a process for treating wastewater such as livestock manure, sewage, and the like, which effectively removes bubbles on the water surface generated on the water surface during wastewater treatment, To thereby prevent the bubble from overflowing in the treatment tank or from generating a bad smell and maximizing the bubble removing effect.

[First Embodiment]

3 to 5, the wastewater generated in the water surface is finely crushed and dispersed to remove bubbles when treating the wastewater 101 introduced into the treatment tank 100 while aeration.

The apparatus includes a support 150 supported on the upper surface of the treatment tank 100, a motor 200 supported on the support 150 and making a revolution power, And an impeller 300 provided at a position spaced apart from the water surface of the wastewater 101.

The impeller 300 includes a base plate 310 and a plurality of blades 320 protruding from one surface of the base plate 310 facing the water surface and curved in the same direction.

5, assuming a virtual circle 330 at the center of the base plate 310, the respective ends of the blades 320 are positioned on the same circumference of the imaginary circle 330 And the other ends are positioned at the edge of the base plate 310. [

The treatment tank 100 is provided with a plurality of level sensors 401 and 402 and an actuator 400 for raising and lowering the support 150 according to the level of the level sensor.

In this case, since the support base 150 is lifted and lowered by the actuator 400, the gap between the impeller 300 and the water surface can be adjusted.

For example, when the water level is sensed by the first water level sensor 401, the position of the impeller 300 is elevated by the operation of the actuator 400 by the operation of the actuator 400. When the water level is detected by the second water level sensor 402, The impeller 300 is lowered.

That is, the water surface and the impeller 300 are kept at a predetermined interval, thereby efficiently removing the foam 102.

When the impeller 300 is rotated by the power of the motor 200, the defoaming device having the above-described structure is operated in the direction of the airflow ('A' direction) toward the center portion (imaginary circle 330) of the base plate 310 A bubble 102 flows into the base plate 310 by centrifugal force generated by the rotation of each blade 320 and the foam 102 is finely crushed and destroyed .

6, when the bubble 102 is guided and discharged by the centrifugal force by the centrifugal force, the concave grooves 321 are formed in the side walls of the blades 320, The bubble removal efficiency is improved.

Since the foam removing device having the above-described structure does not need to spray the high-pressure water or supply the water for bubble removal as in the conventional device, it can shorten the wastewater treatment time and save the water separately.

Since the impeller 300 can be raised and lowered by the operation of the actuator 400 by the first and second water level sensors 401 and 402 so that the gap between the impeller 300 and the water surface can be maintained, So that bubble removal can be done smoothly.

[Second Embodiment]

Referring to FIG. 7, the second embodiment shows a floating type defoaming device in which the gap between the impeller 300 and the water surface is constant regardless of the water level.

A plurality of buoyant bodies 500 floated on the wastewater 101; a support 160 supported on the buoyant body 500 and positioned in the water of the wastewater; And an impeller 300 connected to the rotating shaft 201 of the motor 200 and provided at a position spaced apart from the water surface of the wastewater.

5 and 6, the impeller 300 includes a base plate 310, protrusions formed on one surface of the base plate 310 opposite to the water surface, and extending in the same direction And a plurality of curved blades 320.

Here, assuming a virtual circle 330 at the center of the base plate 310, each of the blades 320 is formed between the edge of the base plate 310 and the edge of the virtual circle 330.

In addition, since the gap between the impeller 300 and the water surface is kept constant by the buoyant body 500, the installation is simplified rather than the first embodiment.

100 ... treatment group 101 ... bubble
200 ... motor 300 ... impeller
310 ... base plate 320 ... blade

Claims

A bubble treatment apparatus for wastewater for removing bubbles generated in a water surface during treatment of wastewater flowing into a treatment tank,
A motor 200 which is supported by the support 150 and which generates rotation power and is connected to a rotating shaft 201 of the motor 200; And an impeller (300) provided at a position spaced from the water surface of the wastewater (101)
The impeller 300 includes a base plate 310 and a plurality of blades 320 protruding from one surface of the base plate 310 facing the water surface and curved in the same direction,
Each of the blades 320 is formed between the edge of the base plate 310 and the edge of the imaginary circle 330 assuming a virtual circle 330 at the center of the base plate 310 Waste water bubble treatment device.

The washing machine according to claim 1, wherein a plurality of water level sensors (402) are provided in the treatment tank (100), and an actuator (400) for elevating and lowering the support table (150) And a bubble generator for generating a bubble.

A bubble treatment apparatus for wastewater for removing bubbles generated in a water surface during treatment of wastewater flowing into a treatment tank,
A support body 160 supported by the buoyant body 500 and positioned in the water of the wastewater, a motor supported by the support body 160 and designed to generate rotational power, And an impeller 300 connected to the rotating shaft 201 of the motor 200 and spaced apart from the water surface of the wastewater,
The impeller 300 includes a base plate 310 and a plurality of blades 320 protruding from one surface of the base plate 310 facing the water surface and curved in the same direction,
Each of the blades 320 is formed between the edge of the base plate 310 and the edge of the imaginary circle 330 assuming a virtual circle 330 at the center of the base plate 310 Waste water bubble treatment device.

The apparatus according to claim 1 or 3, wherein a plurality of concave grooves are formed in side walls of each of the blades.