KR102277451B1 - apparatus for reducing dissolved solid and equipment for removing sludge - Google Patents

Abstract

The present invention provides a device for removing a hardness substance which comprises: a wastewater supply unit for supplying wastewater; a stirring unit for rotationally flowing the wastewater supplied from the wastewater supply unit along a predetermined linear flow distance, and supplying sodium hydroxide to the rotationally flowing wastewater; a reaction unit for extracting a hardness material from the wastewater by receiving the stirred wastewater and making the same react with carbon dioxide or air; a scale separation unit for forming treated water by receiving the wastewater from which the hardness material is extracted in the reaction unit and discharging the hardness material from the wastewater, and discharging the treated water to the outside; and a control unit for controlling the operation of the wastewater supply unit, the stirring unit, the reaction unit, and the scale separation unit. Also, the present invention provides a wastewater treatment facility having the device for removing a hardness material. According to the present invention, the hardness material can be uniformly removed.

Description

Hard substance removal device and wastewater treatment facility having same {apparatus for reducing dissolved solid and equipment for removing sludge}

The present invention relates to a device for removing a hardness material and a wastewater treatment facility having the same, and more particularly, after mixing sodium hydroxide with incoming wastewater, and reacting the wastewater with carbon dioxide or air to adsorb the hardness material to form treated water It relates to a device for removing hard substances and a wastewater treatment plant having the same.

In general, in order to increase or saturate the amount of dissolved oxygen, such as preventing anaerobicization of water and oxidizing pollutants, during purification treatment of contaminated water or water purification treatment of domestic water, and then increase the effect of other extended chemical, biological, and physical treatment Underwater aeration is used.

However, the existing aeration method aerates the air from the treatment plant to the water to be treated, but it is not effective due to various difficulties and adverse conditions.

The reason for this is that when air is aerated underwater, due to the difference in density and specific gravity between water and air, the aerated air rises rapidly toward the water surface. The complex ions are strong and stable, the dissociation enthalpy between water and polluting components is low, and the electronegativity between elements is high, so the binding force between water and pollutants is strong. is difficult

In particular, when a filter is used to treat wastewater containing a large amount of hard material, there is a problem in that the life of the filter is shortened.

Accordingly, the development of a technology for removing the hardness material contained in a large amount of wastewater is required.

Republic of Korea Patent Publication

The present invention has been devised to solve the above problems, and a first object of the present invention is to continuously perform soft water treatment on the supplied wastewater, and to discharge the sludge contained therein for treatment, and a device for removing the same. To provide a wastewater treatment facility with

In addition, a second object of the present invention is to measure the concentration of the hardness material in real time, and to control the supply amount of sodium hydroxide and carbon dioxide or air in real time according to the concentration to achieve a uniform hardness material removal efficiency. To provide an apparatus and a wastewater treatment facility having the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to achieve the above object, the present invention provides an apparatus for removing a hardness material.

The hardness material removal device includes a wastewater supply unit for supplying wastewater;

a stirring unit for rotationally flowing the wastewater supplied from the wastewater supply unit along a predetermined linear flow distance and supplying sodium hydroxide to the rotationally flowing wastewater;

a reaction unit receiving the stirred wastewater and reacting it with carbon dioxide or air to extract a hardness material from the wastewater;

a scale separation unit receiving the wastewater from which the hardness material is extracted from the reaction unit, discharging the hardness material from the wastewater to form treated water, and discharging the treated water to the outside;

and a control unit for controlling the operation of the wastewater supply unit, the stirring unit, the reaction unit, and the scale separation unit.

Here, the stirring unit,

A stirring unit body having a space formed therein and having an inlet at the front end and an outlet at the rear end;

a flow screw which is rotatably disposed inside the stirring unit body and agitates the wastewater supplied through the inlet in a linear direction to flow;

a first rotator for rotating the flow screw;

It is connected to one end of the stirring unit body, it is preferable to have a sodium hydroxide supply for supplying the sodium hydroxide to the inside of the stirring unit body.

And the reaction part,

a reactor in which an accommodation space connected to the outlet of the stirring unit body is formed;

It is preferable to include a reactive gas supplier connected to the upper end of the reactor and supplying the carbon dioxide or air to the accommodation space.

In addition, the scale separation unit,

A storage space connected to the lower end of the reactor to receive and store the wastewater from which the hardness material is extracted includes a separation unit body,

Connected to the lower end of the separation unit body, go to the lower part? a discharge unit for discharging the hardness material to the outside;

It is preferable to include a water outlet connected to the upper end of the separation unit body and having a water outlet pipe for discharging the treated water.

In particular, the separation unit body,

A first separating part body of a hollow shape, and

A second separator body connected to the lower end of the first separator body and having an inner width gradually narrowing downward along the lower portion,

The discharge unit,

It is connected to the lower end of the second separation unit body,

The outlet,

It is connected to the upper end of the first separation unit body.

The wastewater supply unit and the inlet of the stirring unit body are connected through a first pipe,

The sodium hydroxide supply unit is connected to the front end of the stirring unit body through a first supply pipe, and a first valve is installed in the first supply pipe,

In subsection 1 above,

A concentration sensor for measuring the concentration value of the hardness material contained in the wastewater and transmitting the measured concentration value of the hardness material to the control unit is disposed,

The control unit is

The supply amount of the sodium hydroxide is controlled in real time by adjusting the degree of opening and closing of the first valve so as to be proportional to the measured concentration value at a preset ratio.

In addition, the sodium hydroxide supply is connected to the first pipe through a second supply pipe,

A second valve is installed in the second supply pipe,

At the exit,

An auxiliary concentration sensor for measuring the treatment concentration of the hardness material contained in the wastewater discharged through the outlet is installed,

The control unit is

When the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration, the degree of opening and closing of the second valve is controlled to supply the sodium hydroxide in a predetermined amount to the inside of the first tube through the second tube. .

In addition, the outlet and the inlet of the stirring unit body are connected through a recovery pipe,

A recovery pump is installed in the recovery pipe,

When the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration, the control unit drives the recovery pump to supply the wastewater discharged through the outlet to the inlet through the recovery pipe. .

The reaction gas supplier,

A reactive gas supply unit, a reactive gas supply pipe, and a supply valve installed in the reactive gas supply pipe,

The reaction gas supply pipe, the lower end through the upper end of the reactor extends downward along the inside of the reactor a certain length,

At the lower end of the reaction gas supply pipe, injection pipes extending in all directions are formed,

At the upper ends of the injection tubes, injection holes for injecting the reactive gas may be formed.

In addition, a rotator having a waterproof function for rotating the injection pipes may be installed at the lower end of the reactive gas supply pipe.

In addition, a cylinder having a shaft extending and contracting along the top and bottom may be installed at the upper end of the reaction gas supply pipe.

The control unit may raise and lower the shaft a predetermined number of times within a predetermined elevation range using the cylinder.

The injection tubes may be arranged to cross each other along the top and bottom.

The injection holes may be perforated along a path forming a vortex in each of the injection holes.

In another embodiment, the present invention provides a wastewater treatment plant having the hard material removal device described above.

As described above, the present invention has the effect of continuously performing soft water treatment on the supplied wastewater, and discharging the sludge contained therein for treatment.

In addition, the present invention has the effect of achieving uniform hardness material removal efficiency by measuring the concentration of the hardness material in real time, and controlling the supply amount of sodium hydroxide and the supply amount of carbon dioxide or air according to the concentration in real time.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a schematic cross-sectional view showing a hardness material removal device of the present invention.
Figure 2 is a block diagram showing the hardness material removal device of the present invention.
3 is a configuration diagram showing a configuration capable of adjusting the supply amount of sodium hydroxide according to the concentration of hardness substances in wastewater according to the present invention.
4 is a configuration diagram showing an example in which an auxiliary concentration sensor is further installed at the rear end of the reaction unit according to the present invention.
5 is a view showing the configuration of a reaction gas supply pipe according to the present invention.
6 is a view showing an example of the configuration in which the injection tubes according to the present invention are rotated.
7 is a view showing an example in which the injection pipe according to the present invention can be lifted.

Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are given to the same or similar elements throughout the specification.

In the following, the provision or arrangement of an arbitrary component on the “upper (or lower)” or “top (or below)” of the substrate means that any component is provided or disposed in contact with the upper surface (or lower surface) of the substrate. means that

Further, it is not limited to not include other components between the substrate and any components provided or disposed on (or under) the substrate.

The following describes the present invention with reference to the accompanying drawings. Here, the apparatus for removing hardness substances according to the present invention is a configuration of a wastewater treatment facility, and will be described as being included in the configuration of the wastewater treatment facility.

1 is a schematic diagram showing the apparatus for removing a hardness material of the present invention, and FIG. 2 is a configuration diagram showing the apparatus for removing a hardness material according to the present invention.

1 and 2, the wastewater treatment facility of the present invention includes a hardness material removal device.

The hard material removal device includes a wastewater supply unit, a stirring unit, a reaction unit, a scale separation unit, and a control unit.

Each of the above configurations will be described.

The wastewater supply unit 100 according to the present invention supplies wastewater. The wastewater supply unit 100 supplies wastewater to the stirring unit 200 through the first pipe 110 .

The stirring unit 200 according to the present invention rotationally flows the wastewater supplied from the wastewater supply unit 100 along a predetermined linear flow distance and supplies sodium hydroxide to the rotationally flowing wastewater.

The configuration of the stirring unit 200 will be described.

As shown in FIG. 2 , the stirring unit 200 has a space formed therein, the stirring unit body 210 having an inlet 211 at the front end and an outlet 212 at the rear end, and the stirring unit body 210 ) is rotatably disposed inside, and a flow screw 230 for stirring and flowing wastewater supplied through the inlet 211 in a linear direction, and a first rotator 240 for rotating the flow screw 230 . ) and a sodium hydroxide supply 250 connected to one end of the stirring unit body 210 to supply the sodium hydroxide to the inside of the stirring unit body 210 .

The first rotator 240 is driven under the control of the controller 500 to rotate the flow screw 230 to achieve a predetermined number of rotations.

The outlet 212 at the other end of the stirring unit body 210 is connected to the reaction unit 300 through the second pipe 211 .

The reaction unit 300 according to the present invention reacts with carbon dioxide or air to extract a hardness material from the wastewater.

The reaction unit 300 includes a reactor 310 having an accommodating space connected to the outlet 210b of the stirring unit body 210 and connected to the upper end of the reactor 310, and the carbon dioxide into the accommodating space. Alternatively, a reactive gas supply 320 for supplying air is provided.

Here, the reaction gas supply unit 320 includes a reaction gas supply unit 321 , a reaction gas supply pipe 322 , and a supply valve 323 installed in the reaction gas supply pipe 322 .

The lower end of the reaction gas supply pipe 322 is exposed to the internal accommodation space of the reactor 310 . The lower end of the reaction gas supply pipe 322 is preferably impregnated with the received wastewater.

Here, the reaction gas supplied by the reaction gas supply unit 321 is preferably carbon dioxide or air.

The scale separation unit 400 according to the present invention receives the wastewater from which the hardness material is extracted from the reaction unit 300, discharges the hardness material from the wastewater to form treated water, and discharges the treated water to the outside. exit with

The scale separator 400 is connected to the lower end of the reactor 310, and a storage space for receiving and storing the wastewater from which the hardness material is extracted is a separator body 410 and the separator body 410 Connected to the bottom of the go to the bottom?蔓? It consists of a discharge unit 420 for discharging the hardness material to the outside, and a water outlet unit 430 connected to the upper end of the separation unit body 410 and having a water outlet pipe 431 for discharging the treated water. .

And the control unit according to the present invention controls the operation of the wastewater supply unit 100 , the stirring unit 200 , the reaction unit 300 , and the scale separation unit 400 .

In particular, the separation unit body 410 is connected to the first separation unit body 411 having a hollow shape and the lower end of the first separation unit body 411, and the inner width is gradually narrowed along the lower side of the second separation unit body 411 . It is composed of a secondary body (412). The first and second separation unit bodies may be integral, or may be coupled and separated from each other through a screw coupling method.

The discharge part 420 is connected to the lower end of the second separator body 412 .

The water outlet 430 is connected to the upper end of the first separating unit body 411 .

3 is a configuration diagram showing a configuration capable of adjusting the supply amount of sodium hydroxide according to the concentration of the hardness material in the wastewater according to the present invention.

Referring to FIG. 3 , the wastewater supply unit 100 according to the present invention and the inlet 210a of the stirring unit body 210 are connected through a first pipe 110 .

The sodium hydroxide supply 220 is connected to the front end of the stirring unit body 210 through a first supply pipe 221 , and a first valve 222 is installed in the first supply pipe 221 .

A concentration sensor 120 for measuring the concentration value of the hardness material included in the wastewater and transmitting the measured concentration value of the hardness material to the controller 500 is disposed in the first pipe 110 .

Through this, the control unit 500 can control the supply amount of the sodium hydroxide in real time by adjusting the degree of opening and closing of the first valve 222 so as to be proportional to the measured concentration value at a preset ratio.

4 is a configuration diagram showing an example in which an auxiliary concentration sensor is further installed at the rear end of the reaction unit according to the present invention.

Referring to FIG. 4 , the sodium hydroxide supply 220 is connected to the first pipe 110 through a second supply pipe 223 .

A second valve 224 is installed in the second supply pipe 223 .

An auxiliary concentration sensor 250 for measuring the treatment concentration of the hardness material contained in the wastewater discharged through the outlet 210b is installed at the outlet 210b.

The control unit 500 controls the degree of opening and closing of the second valve 224 when the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration and passes the sodium hydroxide through the second pipe 223 . is supplied to the inside of the first pipe 110 in a certain amount.

In addition, the outlet 210b and the inlet 210a of the stirring unit body 210 are connected through a recovery pipe 260 .

A recovery pump 261 is installed in the recovery pipe 260 .

When the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration, the control unit 500 drives the recovery pump 261 to collect the wastewater discharged through the outlet 210b into the recovery pipe ( 260 may be supplied to be recovered to the inlet 210a.

5 is a view showing the configuration of a reaction gas supply pipe according to the present invention.

Referring to FIG. 5 , the reaction gas supply unit 320 according to the present invention includes a reaction gas supply unit 321 , a reaction gas supply pipe 322 , and a supply valve 323 installed in the reaction gas supply pipe 322 . do.

The reaction gas supply pipe 322 has a lower end extending downward along the inside of the reactor 310 by a predetermined length through the upper end of the reactor 310 .

At the lower end of the reaction gas supply pipe 322, injection pipes 324 extending in all directions are formed.

At the upper ends of the injection tubes 324, injection holes 324a for injecting the reactive gas may be formed.

6 is a view showing an example of the configuration in which the injection tubes according to the present invention are rotated.

Referring to FIG. 6 , a rotator 325 having a waterproof function for rotating the injection pipes 324 may be installed at the lower end of the reaction gas supply pipe 322 . The rotator 325 is driven under the control of the controller 500 .

7 is a view showing an example in which the injection pipe according to the present invention can be lifted.

Referring to FIG. 7 , at the upper end of the reaction gas supply pipe 322 , a cylinder 350 having a shaft 351 that expands and contracts along up and down may be installed.

The shaft 351 may be bent in an L shape. The other end of the shaft 351 is connected to a clamp 352 installed in the reaction gas supply pipe 322 .

The control unit 500 may use the cylinder 350 to raise and lower the shaft 351 a predetermined number of times within a predetermined elevation range.

The injection tubes 324 may be arranged to cross each other along the top and bottom.

The injection holes 324a may be perforated to form a vortex path along the longitudinal direction of each of the injection tubes 324 .

According to the above configuration and action, the present invention has the effect of continuously performing soft water treatment on the supplied wastewater and discharging the sludge contained therein for treatment.

In addition, the present invention has the effect of achieving uniform hardness material removal efficiency by measuring the concentration of the hardness material in real time, and controlling the supply amount of sodium hydroxide and the supply amount of carbon dioxide or air according to the concentration in real time.

The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can implement various modifications. Of course, such modifications are intended to be within the scope of the claims.

100: waste water supply unit
200: stirring unit
300: reaction part
400: scale separation unit
500: control unit

Claims (5)

a wastewater supply unit for supplying wastewater;
a stirring unit for rotationally flowing the wastewater supplied from the wastewater supply unit along a predetermined linear flow distance and supplying sodium hydroxide to the rotationally flowing wastewater;
a reaction unit receiving the stirred wastewater and reacting it with carbon dioxide or air to extract a hardness material from the wastewater;
a scale separation unit receiving the wastewater from which the hardness material is extracted from the reaction unit, discharging the hardness material from the wastewater to form treated water, and discharging the treated water to the outside; and;
A control unit for controlling the operation of the wastewater supply unit, the stirring unit, the reaction unit, and the scale separation unit,
The stirring unit includes a stirring unit body having a space formed therein, an inlet at the front end and an outlet at the rear end being rotatably disposed inside the stirring unit body, and directing the wastewater supplied through the inlet in a straight direction. A flow screw for stirring and flowing according to the flow, a first rotator for rotating the flow screw, and a sodium hydroxide supply unit connected to one end of the stirring unit body to supply the sodium hydroxide to the inside of the stirring unit body,
The reaction unit includes a reactor in which an accommodation space connected to the outlet of the stirring unit body is formed, and a reactive gas supplier connected to the upper end of the reactor and supplying the carbon dioxide or air to the accommodation space,
The scale separation unit is connected to the lower end of the reactor, and a storage space for receiving and storing the wastewater from which the hardness material is extracted is connected to the separation unit body and the lower end of the separation unit body to go to the lower part? A discharge unit for discharging the hardness material to the outside, and a water outlet unit connected to the upper end of the separation unit body and having a water outlet pipe for discharging the treated water,
The separation unit body,
A first separating part body of a hollow shape, and
A second separator body connected to the lower end of the first separator body and having an inner width gradually narrowing downward along the lower portion,
The discharge unit,
It is connected to the lower end of the second separation unit body,
The outlet,
It is connected to the upper end of the first separation unit body,
The wastewater supply unit and the inlet of the stirring unit body are connected through a first pipe,
The sodium hydroxide supply unit is connected to the front end of the stirring unit body through a first supply pipe, and a first valve is installed in the first supply pipe,
In subsection 1 above,
A concentration sensor for measuring the concentration value of the hardness material contained in the wastewater and transmitting the measured concentration value of the hardness material to the control unit is disposed,
The control unit is
Controlling the supply amount of the sodium hydroxide in real time by adjusting the degree of opening and closing of the first valve so as to be proportional to the measured concentration value in a predetermined ratio,
The sodium hydroxide supply unit is connected to the first pipe through a second supply pipe,
A second valve is installed in the second supply pipe,
At the exit,
An auxiliary concentration sensor for measuring the treatment concentration of the hardness material contained in the wastewater discharged through the outlet is installed,
The control unit is
When the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration, the degree of opening and closing of the second valve is controlled to supply the sodium hydroxide in a predetermined amount to the inside of the first pipe through the second supply pipe, ,
The outlet and the inlet of the stirring unit body are connected through a recovery pipe,
A recovery pump is installed in the recovery pipe,
When the measured treatment concentration of the hardness material is less than or equal to a preset reference concentration, the control unit drives the recovery pump to supply the wastewater discharged through the outlet to the inlet through the recovery pipe. Hard material removal device, characterized in that.
The method of claim 1,
The reaction gas supplier,
A reactive gas supply unit, a reactive gas supply pipe, and a supply valve installed in the reactive gas supply pipe,
The reaction gas supply pipe, the lower end through the upper end of the reactor extends downward along the inside of the reactor a certain length,
At the lower end of the reaction gas supply pipe, injection pipes extending in all directions are formed,
At the upper ends of the injection tubes, injection holes for injecting the reaction gas are formed,
At the lower end of the reactive gas supply pipe, a rotating machine having a waterproof function for rotating the injection pipes is installed,
At the upper end of the reaction gas supply pipe, a cylinder having a shaft extending and contracting along the top and bottom is installed,
The control unit raises and lowers the shaft a certain number of times within a certain elevation range using the cylinder,
The injection tubes are arranged to cross each other along the top and bottom,
The injection holes, Hard material removal device, characterized in that the drilling along a path forming a vortex in each of the injection holes. delete delete A wastewater treatment plant having a hardness material removal device according to claim 1 or 2 .

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