WO2013047993A1

WO2013047993A1 - Mixing apparatus for a water treatment facility

Info

Publication number: WO2013047993A1
Application number: PCT/KR2012/006171
Authority: WO
Inventors: 허종형; 임정호
Original assignee: Hur Jong Hyung; Lim Jung Ho
Priority date: 2011-09-30
Filing date: 2012-08-02
Publication date: 2013-04-04
Also published as: CN103826733B; KR101086555B1; CN103826733A

Abstract

The present invention relates to a mixing apparatus for a water treatment facility, comprising: a cylindrical mixing tank having an inlet and an outlet such that raw water can pass therethrough; a condensate feeding line for feeding a condensate to the inlet of the mixing tank; an impeller installed inside the mixing tank to be capable of rotating on an axis; a driving motor connected to the impeller to drive and rotate the impeller; and a rotating turbulence generator installed at the inlet of the mixing tank, for inducing raw water to pass through the inlet and enter in the form of a rotating current, and improving the mixed ratio of raw water and condensate within the mixing tank through the rotation of the impeller. In this mixing apparatus for a water treatment facility, the rotating turbulence generator is installed at a side of the inlet in a state where the impeller is disposed within the mixing tank, and raw water entering the mixing tank is made to turbulently rotate. Accordingly, when condensate is fed through the condensate feeding line inside adjacent to the inlet of the mixing tank, raw water that is formed into a rotating current by the rotating turbulence generator meets the condensate so that a first mixing occurs, and then a second mixing occurs by rotating the mixture again by means of the impeller, to thereby increase mixing efficiency.

Description

Admixture for Water Treatment Facilities

The present invention relates to a water treatment plant admixture, and more particularly, to a water treatment plant admixture for injecting a flocculant into the raw water so as to aggregate various impurities and foreign substances contained in the raw water.

The mixing site of the water and sewage treatment plant undergoes a water treatment process in which chemicals are mixed into the raw water in order to aggregate various impurities or foreign substances contained in the incoming raw water.

The mixed area of the water and sewage treatment plant is a mixed water tank having an inlet and an outlet through the raw water, a coagulant injector installed to inject a coagulant into the raw water via the mixed water tank, and the coagulant and the raw water are mixed in the mixed water tank. It is composed of a mixer having an impeller to rotate as possible. That is, the mixed place of the water and sewage treatment plant is introduced into the raw water introduced into the mixing tank through the inlet, the coagulant is introduced into the coagulant injector, and the coagulant and the raw water are mixed by rotating the impeller of the mixer, and then flowed out to the coagulant through the outlet. The relatively simple structure makes it possible to mix the flocculant in the raw water.

However, the conventional mixing site of the water and sewage treatment plant physically mixes the flocculant and the raw water in the mixed water tank depending on the mixer having the impeller rotating in response to the external power supply. In addition to the increased input amount, the mixer is forcibly operated, which causes problems such as easy failure and increased electricity usage.

In addition, since the input point of the flocculant is installed at the inlet away from the impeller, it is difficult to achieve an efficient flocculation reaction due to the nature of the flocculant having a short reaction time, which is difficult to diffuse and react, resulting in a large amount of flocculant and agitation by the impeller of the stirrer. There is a problem that the efficient agitation is difficult because the volume of the amount of raw water is large.

An object of the present invention is to provide a mixing apparatus for a water treatment plant that can increase the mixing efficiency of raw water and a flocculant.

The present invention is a cylindrical mixing tank provided with an inlet and an outlet through the raw water, a coagulant input line for introducing a coagulant into the inlet of the mixing tank, an impeller installed in the mixing tank so as to be axially rotatable, and the impeller is rotated. A drive motor connected to the impeller to be driven, and installed at an inlet of the mixing tank, allowing the raw water to flow into the turbulent turbulent state while passing through the inlet, and the raw water and the inside of the mixing tank through the impeller rotation. Provided is a blending apparatus for a water treatment plant including a rotary turbulence generating unit for increasing a blending ratio of a flocculant.

In addition, the rotary turbulence generating unit, the fixed support disposed in the inner center of the mixing tank inlet, one end is coupled to the fixed support, the other end is coupled to each other along the circumferential direction of the mixing tank in the state coupled to the inside of the mixing tank It may be provided with a plurality of spaced apart, it may include an induction wing to be introduced into the rotary turbulent state into the mixing tank while inducing the raw water passing through the inlet to form a rotary water flow.

In addition, the fixing support may have a conical shape having a recess.

In the mixing apparatus for water treatment facilities according to the present invention, a rotary turbulence generating unit is installed at an inlet side in a state where an impeller is disposed inside the mixing tank, so that raw water flowing into the mixing tank is in a rotating turbulent state. Therefore, when the coagulant is introduced into the adjoining inlet of the mixing tank through the coagulant input line, the raw water in which the rotary turbulence is formed by the rotary turbulence generator meets the coagulant and is secondly rotated again by the impeller that is first mixed in the state of mixing. As it is mixed, the mixing efficiency is increased.

1 is a cross-sectional view of an installation state of a water treatment plant according to an embodiment of the present invention.

FIG. 2 is a perspective view of the admixture for water treatment facilities shown in FIG. 1. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an installation state of a water treatment plant admixture according to an embodiment of the present invention, and FIG. 2 is a perspective view of the water treatment plant admixture shown in FIG. 1. 1 and 2, the admixture device 100 for the water treatment facility includes a mixing tank 110, a coagulant input line 120, an impeller 130, a driving motor 140, and a rotary turbulence generating unit 150. Equipped with.

The mixing tank 110 is a cylindrical structure in which water treatment is performed while the raw water to be treated (hereinafter referred to as raw water) by the impeller 130 and the rotary turbulence generating unit 150 to be described later. The mixing tank 110 may be installed on the water tank 10 into which the raw water flows. In this case, the raw water is introduced into the mixing tank 110, and then the inlet 111 to discharge the raw water mixed with the coagulant introduced from the coagulant input line 120 to be described later. And an outlet 112 is formed. In addition, the inlet 111 side of the mixing tank 110 is connected to one end in the longitudinal direction of the coagulant input line 120 to be described later, the coagulant supplied from the coagulant input line 120 to the mixing tank 110. Input hole 113 may be formed to be supplied into the inside.

The coagulant input line 120 is of a tubular shape into which the coagulant, which is mixed with the raw water in the mixing tank 110 and aggregates the impurities, fine particles and foreign matter contained in the raw water into the mixing tank 110. It is a connecting member. This, one end in the longitudinal direction of the flocculant input line 120 is connected to one side adjacent to the inlet 111 of the mixing tank 110, that is, connected to the input hole 113 of the mixing tank 110, the other end is It is connected to the storage tank (not shown) storing the flocculant. Here, the coagulant movement input into the mixing tank 110 in the storage tank through the coagulant input line 120 is connected to the coagulant input line 120 or the storage tank (not shown) )

The impeller 130 is rotated by the drive motor 140 to be described later in a state in which the axial rotation is installed inside the mixing tank 110. The impeller 130 generates a suction discharge force so that the raw water is introduced through the inlet 111 of the mixing tank 110 and then discharged through the outlet 112. In addition, the impeller 130 performs a function of rapidly mixing the flocculant and the raw water introduced from the flocculant input line 120. Here, the impeller 130 is connected to the drive motor 140 to be described later, the end of the drive shaft 131 in a state that is rotatably installed in the mixing tank 110 by the drive shaft 131, It is driven to rotate in accordance with the operation of the drive motor 140. Such, the impeller 130 may be configured to control the required number of revolutions in consideration of mixing conditions.

The drive motor 140 generates a rotational driving force to allow the impeller 130 to rotate inside the mixing tank 110. The rotation shaft (not shown) of the driving motor 140 is connected to the driving shaft 131 of the impeller 130 to transmit the rotational force of the rotating shaft according to the operation to the driving shaft 131. Here, the drive motor 140 is configured to control the rotational speed of the impeller 130 as described above. As such, while the impeller 130 rotates inside the mixing tank 110 by the driving motor 140, the raw water and the flocculant are introduced into the mixing tank 110 through the inlet 111 of the mixing tank 110. After that, the discharge is made through the outlet 112 in a mixed state.

The rotary turbulence generating unit 150 allows the raw water introduced into the mixing tank 110 through the inlet 111 to enter the rotary turbulent state. That is, the rotary turbulence generating unit 150 is to rotate the raw water flowing into the mixing tank 110 into a turbulent turbulent state, and the flocculant in the mixing tank 110 by the impeller 130 and The miscibility increases. This, the rotary turbulence generating unit 150 is installed in the inlet 111 of the mixing tank 110, and includes a fixed support 151 and the guide vane 153.

The fixed support 151 is a part supporting one end of the guide vane 153 to be described later. The fixed support 151 is coupled to one end of the guide blade 153 in a state disposed in the inner center of the mixing tank 110, the inlet 111. Here, the fixed support 151 is coupled to the inside of the mixing tank 110 to maintain a stable support state that one end position of the induction blade 153 is not deformed according to the flow rate of the raw water flows in. A support leg (not shown) may be provided. That is, one end in the longitudinal direction of the support leg is coupled to the mixing tank 110, the other end may be coupled to the fixed support 151.

In addition, the fixing support 151 may be formed in a conical shape having a concave portion 152. Here, when the raw water is introduced through the inlet 111 of the mixing pipe 110, the raw water is introduced into the inlet 152 of the fixed support 151 after moving the raw water is lost due to the flow rate due to the collision It is suppressed that the rotation turbulence formation of the raw water by the guide blade 153 to be described later can be made efficiently.

The guide vane 153 forms a rotational speed while the raw water flowing in through the inlet 111 of the mixing tank 110 forms a rotational speed, and thus becomes a rotating turbulent state when introduced into the mixing tank 110. The guide blades 153 are installed in plural to be spaced apart from each other along the circumferential direction of the mixing tank 110. Here, one end of each of the guide vanes 153 is fixedly coupled to the inside of the mixing tank 110 in the other end in a state that is fixedly coupled to the outside of the fixed support (151). At this time, one end of the guide blade 153 may be hinged rotatably to adjust the tilt in a state connected to the outside of the fixed support (151). Here, when one end of the guide blade 153 is rotatably coupled to the outside of the fixed support 151, the fixing means (not shown) for fixing in a state in which the inclination of the guide blade 153 is adjusted Of course it is equipped.

Here, the guide vane 153 is disposed inclined at a predetermined angle with respect to the inflow direction of the raw water so as to collide with the incoming raw water. Here, the degree of inclination of the guide vane 153 is an angle capable of forming a large rotary turbulence while minimizing a decrease in flow rate of the raw water. The installation angle of the guide vane 153 may be obtained through repeated experiments depending on the diameter of the mixing tank 110, the inlet 111, the size of the guide vane 153, and the number of installations.

The operation of the admixture 100 for water treatment facilities according to an embodiment configured as described above will be described with reference to FIGS. 1 and 2.

First, the mixing device 110 is installed on the water tank 10 in which the raw water is stored. Subsequently, the impeller 130 is axially rotated inside the mixing tank 110 while operating by supplying power to the driving motor 140. At the same time, the flocculant is introduced into the mixing tank 110 through the flocculant input line 120.

Then, the raw water in the mixing tank 110 is discharged through the outlet 112 by the impeller 130 is axially rotated in addition to the water level difference between the inflow water level and the outflow water level in the mixing tank 110. In addition, the internal pressure of the mixing tank 110 is lowered to generate suction movement force so that the raw water can be continuously introduced through the inlet 111.

At this time, the mixing tank 110 is discharged through the outlet 112 in a state in which the raw water is mixed with the flocculant introduced from the flocculant input line 120 by the impeller 130.

Here, when the raw water is introduced through the inlet 111 of the mixing tank 110, while passing through the rotary turbulence generating unit 150 before mixing with the flocculant by the impeller 130, the inlet 111 Immediately after passing through), miscibility with the flocculant is achieved. In other words, when the raw water is introduced through the inlet 111 of the mixing tank 110, the raw water is in a rotary turbulent state due to collision with the guide vanes 153 of the rotary turbulence generating unit 150, the flocculant Will be mixed with.

As such, the raw water firstly mixed with the flocculant through the rotary turbulence generating unit 150 is mixed again while passing through the impeller 130, while the mixing efficiency of the raw water and the flocculant is increased. Discharge is made through the outlet 112.

As described above, the mixing apparatus 100 for the water treatment facility according to the embodiment includes the rotary turbulence generating unit 150 at the inlet 111 in a state in which the impeller 130 is disposed inside the mixing tank 110. By installing, the raw water flowing into the mixing tank 110 to be in a rotary turbulent state. Therefore, when the coagulant is introduced into the adjoining port 111 of the mixing tank 110 through the coagulant input line 120, the raw water in which the rotary turbulence is formed by the rotary turbulence generating unit 150 is The mixing efficiency is increased by the second mixing by the impeller 130 is rotated again in the state of mixing is first made while meeting the flocculant.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims

A cylindrical mixing tank provided with an inlet and an outlet through the raw water;

A coagulant input line for injecting a coagulant into the inlet of the mixing tank;

An impeller rotatably installed in the mixing tank;

A drive motor connected to the impeller so that the impeller is driven to rotate; And,

Is installed in the inlet of the mixing tank, the rotary turbulence generating unit for increasing the mixing rate of the raw water and the flocculant in the mixing tank through the impeller rotation while allowing the raw water to flow into the rotating turbulent state while passing through the inlet Admixture for water treatment facility comprising.
The method according to claim 1,

The rotary turbulence generating unit,

A fixed support disposed in the inner center of the mixing tank inlet,

One end is coupled to the fixed support, the other end is coupled to the mixing tank in a state in which a plurality of spaced apart from each other along the circumferential direction of the mixing tank, the raw water passing through the inlet to form a rotating water flow Mixing device for a water treatment plant comprising an induction blade to be introduced into the turbulent turbulent state into the mixing tank.
The method according to claim 1,

The fixed support is a conical device for water treatment facilities of the conical shape having a recess.