KR101733543B1 - Chlorine gas treatment system - Google Patents

Abstract

The present invention relates to a microbubble neutralizing device for neutralizing gas containing inflow chlorine gas (Cl ₂ ) in a liquid contained therein and for neutralizing a neutralizing process liquid for neutralizing chlorine gas by being connected to the microbubble neutralizing device Wherein the neutralizing treatment liquid comprises a neutralizing agent formed of an alkaline aqueous solution for neutralizing chlorine gas and a neutralizing agent formed of a neutralizing agent for neutralizing chlorine gas and a reaction containing thiosulfate ion (S ₂ O ₃ ^2- ) to prevent the regeneration of chlorine gas The present invention provides a chlorine gas treatment system including a chlorine gas treatment system.
According to the above description, it is possible to prevent the chlorine gas from being reduced to the chlorine gas again during the wastewater treatment through the reactive agent including the sodium thiosulfate in the treatment liquid supply unit and the neutralizer to prevent the chlorine gas from being released, By refining the introduced chlorine gas with microbubbles in the liquid, the contact area and the contact time of the chlorine gas and the liquid are remarkably improved, so that the reaction efficiency can be increased.

Description

 Chlorine gas treatment system

The present invention relates to a chlorine gas processing system, and more particularly, to a chlorine gas processing system capable of effectively removing chlorine gas generated in wastewater treatment or the like.

Generally, a fluid treatment method is treated by a method such as aeration, deaeration, oxidation, reduction, neutralization and dust treatment depending on the type of treatment water and treatment purpose. Such a fluid treatment method is a method in which a gas, a liquid, It is carried out using the reaction of liquid and liquid.

For example, in the case of an aeration apparatus that allows organic matter to be decomposed by microorganisms by supplying aerobic microorganisms and oxygen to the treated water containing organic matter, it is necessary to control the concentration of oxygen in the treated water in order to accelerate the decomposition of organic matters in the microorganism In the case of the degassing apparatus, ammonia or volatile organic substances are deaerated and removed by supplying oxygen to wastewater containing high concentration of ammonia or volatile organic substances, and oxidation, reduction, neutralization reaction , The oxidant, reducing agent and neutralizing agent are added to the treated water and reacted with the odorous substance to remove the respective odorous substances. In the case of the dust treating apparatus, dust is adsorbed and removed by using water .

Scheme 1

Scheme 2

Conventionally, when chlorine is neutralized in a fluid treatment apparatus and wastewater is introduced into the wastewater treatment plant, hydrochloric acid is added to the wastewater to adjust the pH concentration in the wastewater treatment plant. In this case, There is a problem that the chlorine gas is released into the atmosphere as the reduction phenomenon occurs.

Korean Patent Registration No. 10-1107098

The present invention prevents the chlorine gas from being reduced to chlorine gas again during the wastewater treatment and prevents the chlorine gas discharge and increases the contact area and the contact time of the chlorine gas and the liquid by refining the inflowing chlorine gas with microbubbles in the liquid And it is an object of the present invention to provide a chlorine gas processing system capable of improving reaction efficiency.

The present invention relates to a microbubble neutralizing device for neutralizing gas containing inflow chlorine gas (Cl ₂ ) in a liquid contained therein, and a neutralization treatment liquid for neutralizing the chlorine gas, which is connected to the microbubble neutralization device Wherein the neutralizing treatment liquid comprises a neutralizing agent formed of an alkaline aqueous solution for neutralizing the chlorine gas and a treatment liquid supplying unit supplying a thiosulfate ion (S ₂ O ₃ ^{2 -} , a thiosulfate ion).

The chlorine gas treatment system according to the present invention provides the following effects.

First, the chlorine gas is prevented from being reduced to chlorine gas during the wastewater treatment through the reactive agent including the sodium thiosulfate in the treatment liquid supply unit and the neutralizer, thereby preventing the chlorine gas from being released.

Second, by refining chlorine gas flowing through the microbubble generator with microbubbles in the liquid, the contact area and the contact time of the chlorine gas and the liquid are greatly improved, thereby increasing the reaction efficiency.

Third, it is economical because it is possible to reduce the investment cost by simplifying the structure, to reduce the installation area, and to reduce the maintenance cost including the equipment cost and electricity cost.

1 is a configuration diagram showing the configuration of a chlorine gas processing system according to an embodiment of the present invention.
Fig. 2 is a configuration diagram showing a configuration of a microbubble neutralizing apparatus in the chlorine gas processing system of Fig. 1; Fig.
3 is a configuration diagram showing another embodiment of the microbubble neutralizing device in the chlorine gas processing system of FIG.
4 is a block diagram showing a control flow of the control unit in the chlorine gas processing system of FIG.

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

Referring to FIG. 1, a chlorine gas treatment system according to an embodiment of the present invention includes a microbubble neutralization apparatus 100, a treatment liquid supply unit 200, and a control unit 300. In that the gas microbubbles neutralization device 100 includes a chlorine gas (Cl ₂₎ flowing by using the microbubbles it serves to neutralize the chlorine gas (Cl _2). Here, the chlorine gas is discharged from the chlorine gas generator 10, and the chlorine gas generator 10 may be various sources such as a malodorous gas, a manure treatment plant, a housing, a sewage treatment plant, a wastewater treatment apparatus, The fluid discharged from the main body 10 may include other harmful gas other than the chlorine gas.

2, the microbubble neutralization apparatus 100 includes a micro bubble generating body 110 for dissolving and removing a chlorine component of a chlorine gas in a liquid by bringing the chlorine gas into contact with the liquid, A micro bubble generating device 120, and a suction pump 130.

The micro bubble generating body 110 is formed with an inlet through which the chlorine gas flows and an outlet through which the introduced chlorine gas is sucked and discharged by the suction pump 130, A liquid for communicating and dissolving the chlorine component of the chlorine gas is accommodated, and a storage space for supplying the neutralization treatment liquid is provided. Here, it is preferable to apply water as a preferred embodiment of the liquid applied for reasons of ease of handling and economy, but it goes without saying that various liquids can be applied as long as the above objects can be achieved.

When the suction pump 130 is operated, the microbubble generating body 110 is brought into a negative pressure state in which the storage space is slightly lower than the atmospheric pressure by the suction force of the suction pump 130, The level of the liquid in the storage space rises and the micro bubble generator 120 is immersed in the liquid.

Wherein the storage space includes a subspace (111) in which the chlorine gas and the liquid are introduced and the liquid is received therein, and the subspace (111) is communicated with the chlorine gas to receive the liquid, And a main space 112 in which the bubble generator 120 is installed.

A plurality of micro bubble generating bodies (110) are staggered while being spaced apart from each other on the upper side of the micro bubble generating device (120) in the storage space, so that chlorine gas flowing out from the micro bubble generating device Lt; / RTI >

In addition, the micro bubble generating body 110 includes an eliminator which is disposed on the blocking plates and is made of stainless steel or the like to remove moisture.

The micro bubble generating device 120 is installed in the micro bubble generating body 110. In operation, the micro bubble generating device 120 refines the chlorine gas in the liquid to form a micro bubble, thereby removing the chlorine gas by the liquid. The micro bubble generator 120 includes a nozzle 121 and a collision part 122.

When the water level rises by the suction pump 130 during operation, the outlet portion is immersed in the raised liquid, and the flow cross-sectional area of the nozzle portion 121 is increased to increase the flow rate of the chlorine gas introduced through the inlet portion So that the chlorine gas is injected in the liquid.

The impact portion 122 is spaced apart from the outflow portion so that the chlorine gas injected from the nozzle portion 121 collides with the bottom surface to refine the chlorine gas. The impact portion 122 may include one or a plurality of collision portions 122 disposed in a plate shape and in a horizontal direction with respect to the outflow direction of the chlorine gas and arranged so that chlorine gas collides with the lower surface and spreads to the side, Collision plates.

The micro bubble generator 120 includes an adjusting member that is slidably coupled along an upper side surface of the nozzle unit 121 to adjust the cross-sectional area of the outlet unit according to the sliding movement, And a position adjusting unit coupled to the bubble generating body and moving the impact unit 122 from the nozzle unit 121 in the lateral and longitudinal directions. The position regulating unit includes a height regulating plate having a long sloped first sliding hole coupled with the micro bubble generating body 110 and a long sloping second sliding part coupled with the impact part 122, And a fastening member fastened to the first sliding hole and the second sliding hole at the same time to fasten the height adjusting plate and the coupling plate and to fix the position of the impact portion 122.

The suction pump 130 communicates with the outlet of the micro bubble generating body 110 to suck the gas in the storage space and to bring the storage space into a negative pressure state by a suction force, Of the water level.

The treatment liquid supply unit 200 serves to supply a neutralization treatment liquid for neutralizing the chlorine gas to the microbubble neutralization apparatus 100. The treatment liquid supply unit 200 includes a neutralizing agent supply unit 210 for supplying a neutralizing agent to the microbubble generating body 110 and a reaction providing unit 220 for supplying a reactant to the microbubble generating body 110 .

The neutralizing agent supply unit 210 includes a neutralizing agent storage tank 213 for storing the neutralizing agent, a neutralizing agent supply line 211 for connecting the microbubble generating body 110 and the neutralizing agent storage tank 213, A neutralizing agent supply pump 212 installed on the neutralizing agent supply line 211 and a neutralizing agent control valve provided on the neutralizing agent supply line 211.

The reaction providing unit 220 includes a reactant storage tank 223 for storing the reactant and a reactant supply line 223 for communicating the microbubble generating body 110 and the reactant storage tank 223 with each other A reactant supply pump 222 installed on the reactant supply line 221 and a reactant adjuster installed on the reactant supply line 221.

Wherein the neutralization treatment liquid comprises a neutralizing agent formed of an alkaline aqueous solution for neutralizing the chlorine gas and a chlorine gas containing thiosulfate ion (S ₂ O ₃ ^2- , thiosulfate ion) to prevent regeneration of the chlorine gas, And a reactive agent which reacts with the chlorine gas reduced in the reaction of the neutralizing agent. Here, the neutralizing agent includes an aqueous solution of sodium hydroxide (NaOH) or an aqueous solution of potassium hydroxide (KOH) as an alkaline solution.

The reactant may be an aqueous solution of sodium thiosulfate (Na ₂ S ₂ O ₃ ) or an aqueous solution of potassium thiosulfate (K ₂ S ₂ O ₃ ) corresponding to the aqueous solution of sodium hydroxide (NaOH) or potassium hydroxide (KOH) .

Reaction formulas for the neutralizing agent and the reactant are shown in Reaction Formula 3 and Reaction Formula 4. First, the reaction formula 3 is a reaction formula in which an aqueous solution of sodium hydroxide is used as a neutralizing agent and sodium thiosulfate is used as a reactant. Unlike the conventional method in which the chlorine gas is discharged to the atmosphere due to the generation of chlorine reducing form when hydrochloric acid is added to control the pH concentration in the wastewater treatment, the chlorine gas treatment system is provided with a reactant of sodium thiosulfate So that sodium hypochlorite generated by adding hydrochloric acid can be replaced with sodium sulfate and discharged.

Scheme 3

Scheme 4 shows a reaction scheme in which an aqueous solution of potassium hydroxide is used as a neutralizing agent and sodium thiosulfate is used as a reactant. As a result, it can be seen that the sodium thiosulfate reactant substitutes stable compounds of potassium chloride and potassium sulfate without regeneration of sodium hypochlorite and chlorine gas. According to the above, the chlorine gas treatment system can prevent regeneration of chlorine gas through the reactant of the sodium hydroxide aqueous solution or the aqueous solution of potassium hydroxide and neutralizing agent of sodium thiosulfate to prevent the discharge of chlorine gas.

Scheme 4

The neutralizing agent is exemplified by an aqueous sodium hydroxide solution or an aqueous potassium hydroxide solution. However, the neutralizing agent may be various neutralizing agents as long as the above objects can be achieved, such as an aqueous solution of calcium hydroxide and an aqueous solution of magnesium hydroxide. It goes without saying that the reaction system may be changed to another substance including thiosulfate ion (S ₂ O ₃ ^2- ).

3 is a view showing another embodiment of the microbubble neutralization apparatus 100a. Referring to FIG. 1, the microbubble neutralizing apparatus 100a includes a micro micro bubble generating body 140 and a micro bubble generating apparatus 150.

The micro bubble generating body 140 is formed with an inlet (not shown) through which the neutralization treatment liquid flows and an outlet through which the gas in the storage space is discharged. The inside of the micro bubble generating body 140 communicates with the inlet and the outlet, And a storage space in which the neutralization treatment liquid is supplied is provided.

The micro bubble generator 150 is configured to micronize and micro bubble the chlorine gas in the liquid 1 to remove the chlorine gas by the liquid to form a gas supply pipe 151 and a collision part 152 . The gas supply pipe 151 is inserted and fixed in the tubular micro bubble generating body 140 such that an insertion end thereof is positioned within the tub microbubble generating body 140, A gas containing chlorine gas is supplied, and an end of the chlorine gas to which the chlorine gas is discharged during operation is immersed in the liquid.

The impact portion 152 is provided to be spaced from the end portion of the gas supply pipe 151 and is immersed in the liquid 1 during operation so that the chlorine gas flowing out from the gas supply pipe 151 collides with the lower surface, So that microbubbles are formed in the liquid. Here, the collision portion 152 may include a plurality of impingement plates positioned in a horizontal direction as shown in FIG. However, it goes without saying that, in one embodiment, it is possible to arrange one impingement plate other than the multi-stage in a horizontal direction.

Since the micro bubble neutralizing apparatus 100a uses the micro bubble generating apparatus 150 using the gas supply pipe of the tubular shape in the micro micro bubble generating body 140, the micro bubble neutralizing apparatus 100a has a simple structure, Which is economical, easy to manufacture and handle, and can be manufactured in a portable manner.

4, the microbubble neutralization apparatus 100 includes a measurement sensor 310 for sensing a pH concentration of liquid contained in a storage space of the microbubble generating body 110, and the measurement sensor 310 And a controller 300 for receiving information on the pH of the liquid from the microbubble neutralizer 100 or 100a and controlling the microbubble neutralizer 100 or 100a.

The control unit 300 controls the operation of the microbubble neutralizer 100 by controlling the operation of the suction pump 130. The control unit 300 controls the neutralizing agent supply pump 212 and the reactant supply pump 222 of the treatment liquid supply unit 200 in response to the pH concentration of the liquid to react with the neutralizing agent in the liquid 1 The supply amount of the agent can be controlled. Herein, the pH concentration of the liquid can determine the degree to which the chlorine gas is refined and dissolved in the liquid, and the controller 300 makes the chlorine gas become the optimum pH concentration of the liquid so that the chlorine gas can be neutralized and removed .

Meanwhile, the chlorine gas treatment system includes a wastewater reservoir 400 and a regulator injection unit 500. The waste water storage tank 400 is connected to the microbubble neutralization apparatus 100 to store the fluid discharged from the storage space.

The adjusting agent input unit 500 functions to input a controlling agent such as hydrochloric acid (HCl) to control the pH concentration of the fluid stored in the wastewater reservoir 400. The controller 500 includes an adjuster feed pump 510 and an adjuster storage tank 520 for storing the adjuster.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10 ... chlorine gas source 100,100a ... micro bubble neutralizer
110,140 ... micro bubble generating body 111 ... subspace
112 ... main space 120, 150 ... micro bubble generator
121 ... nozzle parts 122, 152 ... collision parts
130 ... suction pump 200 ... treatment liquid supply unit
210 ... Neutralizing agent supplying section 211 ... Neutralizing agent supplying line
212 ... neutralizing agent supply pump 213 ... neutralizing agent storage tank
220 ... Reaction Providing Benefit 221 ... Reactant Supply Line
222 ... reactant supply pump 223 ... reactant storage tank
300 ... controller 310 ... measuring sensor
400 ... wastewater storage tank 500 ... adjuster injection unit
510 ... adjuster feed pump 520 ... adjuster storage tank

Claims (10)

A microbubble neutralizing device for micronizing the gas containing the introduced chlorine gas (Cl ₂ ) in the liquid contained therein to neutralize the gas; And
A neutralizing agent connected to the microbubble neutralizing device for neutralizing the chlorine gas and a reactive agent supplied together with the neutralizing agent to prevent regeneration of the chlorine gas, A supply portion,
In the neutralization treatment liquid,
A neutralizing agent formed of an alkaline aqueous solution for neutralizing the chlorine gas and containing an aqueous solution of sodium hydroxide (NaOH) or an aqueous solution of potassium hydroxide (KOH), and a neutralizing agent containing a thiosulfate ion S ₂ O ₃ ^2- , thiosulfate ion, and an aqueous solution of sodium thiosulfate (Na ₂ S ₂ O ₃ ) or potassium thiosulfate (K ₂ S ₂ O ₃ ) corresponding to the neutralizing agent And a reactive agent,
Wherein the processing liquid supply unit includes:
A neutralizing agent supply part for supplying the neutralizing agent to the microbubble generating body and a reaction providing part for supplying the reacting agent to the microbubble generating body so that the neutralizing agent and the reactant are supplied to the microbubble generating body together Chlorine gas treatment system. The method according to claim 1,
Wherein the microbubble neutralization device comprises:
And an outlet port through which the chlorine gas is introduced and an outlet through which the chlorine gas is introduced are respectively formed in the inner space and the outer space, A micro bubble generating body,
A nozzle disposed in the micro bubble generating body for increasing the flow velocity of the chlorine gas introduced through the inlet and discharging the chlorine gas into the outlet, wherein the outlet is immersed in the liquid to spray the chlorine gas in the liquid; And a collision portion positioned to be spaced apart from the outflow portion and causing the chlorine gas injected from the nozzle portion to collide with the bottom surface, wherein the chlorine gas is refined in the liquid during operation to form a micro bubble, And a micro bubble generating device for removing the chlorine gas by the liquid. The method of claim 2,
Wherein the storage space of the microbubble generating body comprises:
A main space into which the chlorine gas and the liquid are introduced and in which the liquid is received, and a main space communicating with the subspace, into which the chlorine gas is introduced, the liquid is accommodated, and the microbubble generator is installed Chlorine gas treatment system. The method according to claim 1,
Wherein the microbubble neutralization device comprises:
And an outlet port through which the chlorine gas is introduced and an outlet through which the chlorine gas is introduced are respectively formed in the inner space and the outer space, A micro bubble generating body,
Bubble generating body so that an insertion end thereof is inserted into the micro bubble generating body so as to be positioned in the micro bubble generating body and supplies the chlorine gas into the micro bubble generating body, And a micro bubble is formed in the liquid by causing the chlorine gas flowing out from the gas supply pipe to collide with the lower surface to be formed in the liquid. And a micro bubble generating device for removing the chlorine gas including the impact portion by the liquid. The method according to claim 2 or 3,
The impact portion
Wherein the one or more impingement plates are positioned in a horizontal direction. The method according to claim 2 or 3,
And a suction pump connected to the outlet of the micro bubble generating body to suck the gas in the storage space and increase the water level by causing the storage space to be in a negative pressure state by a suction force, Chlorine gas treatment system. delete delete The method according to claim 1,
The microbubble neutralization device is operated and controlled,
And a control section for controlling the treatment liquid supply section to supply the neutralization treatment liquid in accordance with the pH concentration of the liquid. The method of claim 2,
A waste water storage tank connected to the microbubble neutralization device and storing the liquid discharged from the storage space;
Further comprising a regulator injector for injecting a regulator to regulate the pH concentration of the liquid stored in the wastewater reservoir.

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