KR20110067182A - Treatment method and apparatus of chlorine ion and hardness in water - Google Patents

Abstract

PURPOSE: Underwater chlorine ion and hardness processing unit and method are provided to reduce the processing cost of water by removing heavy metals and cyanogens when removing the hardness from the water. CONSTITUTION: An Underwater chlorine ion and hardness processing method comprises the following steps: diffusing ultra-fine air bubbles in water to be processed, and adding caustic soda for adjusting the water into the strong alkaline water; supplying compressed water to produce ultra-fine ozone bubbles; circulating the water in a sealed space for mixing, crushing, and pressurizing the water using the ultra-fine air bubbles and the ultra-fine ozone bubbles; and discharging the processed water with the underwater pressure for ionizing the processed water.

Description

Underwater Chlorine Ion Hardness Treatment Apparatus and Method {TREATMENT METHOD AND APPARATUS OF CHLORINE ION AND HARDNESS IN WATER}

The present invention relates to an apparatus and a method for treating chlorine ion and hardness in water.

Water is widely used in drinking water, domestic water, and various industrial fields as an easily available resource, and used water is purified and discharged into the water system.

However, in recent years, as a lack of water is expected, interest in reuse of treated water treated in a wastewater treatment plant has been brought to attention, and research for using it as a process water is particularly accelerated in an industrial field that uses a lot of water.

Wastewater generated in the industrial field contains a considerable amount of hardness and chlorine ions in water because various chemicals are used in the purification process, and it is expensive to remove them, and in particular, the process is very difficult to remove chlorine ions. In addition, it has a property that is not removed well.

In order to use it for reuse, various methods such as membrane, reverse osmosis membrane and ion exchange resin filtration method are used, but it is expensive, but it has a problem of shortening membrane life and low efficiency depending on the water quality. .

In order to solve the problems described above, the present invention is to remove the chlorine ion and hardness of the treated water in a short time by using ultra-microporous bubbles and ultra-fine ozone bubbles by ionizing the treated water of strong alkali. The goal is to provide a way to do this.

As a means, the treatment tank T is arranged inside the mixing chamber 1, the first circulation oxidation chamber 2, the second circulation oxidation chamber 3, by the partition diaphragm E1, E2, E3, E4 inside, It is divided into a floating separation chamber (4) and a filtration chamber (5) to form a quadrangular shape and configured to allow a natural flow of the influent.

The mixing chamber 1 is provided with an inlet tube 6 at an upper portion thereof, a caustic soda inlet tube 7 is connected to the inlet tube 6, and a partition plate of the mixing chamber 1 and the first circulation oxidation chamber 2 is partitioned. (E1) Secure a space underneath.

The first circulating oxidation chamber (2) has a skimmer for recovering suspended solids on the surface of the water, a floating material conveying passage, a caustic soda inflow pipe (7-1), a conveying pipe (8), and a discharge device having two discharge ports at the bottom thereof. ) Is placed so that one side thereof faces the mixing chamber 1 beyond the lower portion of the partition diaphragm E1, and one side has a discharge port in the first circulation oxidation chamber 2.

The discharging device 13 is connected to the first ultra-small force generating device (B1) through the pressure feed pipe 14, the first ultra-small force generating device (B1) is connected to the compressor (C) through the supply pipe (19). It is connected to the first circulation oxidation chamber 2 through the bubble water supply pipe (21).

The second circulation oxidation chamber 3 is provided with a skimmer for recovering suspended substances on the water surface, a floating material conveying passage, a conveying pipe 9, and a discharge device 15 below.

The discharging device 15 is connected to the second ultra-small microbubble generating device B2 through the pressure feeding tube 16, and the second ultra-small microbubble generating device B2 is subjected to the second circulation oxidation through the bubble water supply pipe 22. It is connected to the chamber (3) while connected to the ozone generator (A) through the required pipe, the ozone generator (A) is connected to the oxygen generator (A1).

The floating separation chamber 4 is provided with a skimmer for collecting suspended solids on the water, a floating material conveying passage, a coagulant inflow pipe 10, a polymer flocculant inflow pipe 11, and a discharge device 17 in the lower portion.

The discharging device 17 is connected to the third ultra-small microbubble generating device B3 through the pressure feeding tube 18, and the third ultra-small microbubble generating device B3 is filtered through the bubble water supply pipe 23. Is connected to the compressor (C) through the supply pipe (20).

The filtration chamber 5 is configured by mounting a plurality of filter nets S filled with activated carbon therein and installing a filtered water discharge pipe D at a lower portion thereof.

In the above, the first, second, and third ultra-microscopic bubble generators B1, B2, and B3 use a patent-registered line mixer type ultra-micron bubble generator (Registration No. 0510405).

The operation of the means is a step in which the water to be treated and caustic soda are introduced into the mixing chamber 1, the water to be treated is adjusted to PH 11 or more, and transferred to the first circulating oxidation chamber 2,

The treated water transferred to the first circulating oxidation chamber (2) is circulated to the first ultra-micro bubble generator (B1) and mixed with compressed air at least 6 atm in the closed space of the first ultra-micro bubble generator (B1). , Pulverized and pressurized to be discharged and diffused at a rapid underwater pressure of 1 atm or less,

Discharging / diffusion of the water to be treated is discharged to the same first circulating oxidation chamber 2 to repeat and circulate the water to be treated for a predetermined time;

The compressed air is blown out by the dispersing and diffusing action, and the water to be treated is a single molecule or ionized by the collapse of the CRUST.

As the monomolecule or ionization of the water to be treated, the pollutants are oxidized and reduced by the ultra-porous air bubbles, and the suspended pollutants are lifted to the surface to remove the first process,

Transferring the first treated water to the second circulation oxidation chamber (3),

The treated water transferred to the second circulating oxidation chamber (3) is circulated to the second ultra-micro bubble generator (B2) and mixed with ozone gas at least 6 atm in the sealed space of the second ultra-micro bubble generator (B2). , Pulverized and pressurized to be discharged and diffused at a rapid underwater pressure of 1 atm or less,

Discharging / diffusion of the water to be treated is discharged to the same second circulating oxidation chamber 3 to repeat and circulate the water to be treated for a predetermined time;

Ozone gas is an ultra-fine ozone bubble by discharge and diffusion, and the water to be treated is a single molecule or ionized by the collapse of the CRUST.

As the monomolecule or ionization of the water to be treated, the contaminants are oxidized and reduced by ultra-fine ozone bubbles, and the suspended contaminants are floated to the surface, and secondary treatment is carried out to the floating separation chamber 4,

Secondary treated water transported to the flotation separation chamber 4 is neutralized as a coagulant is injected, and is not removed by the ultra-microporous bubble that is discharged by the operation of the third ultra-fine bubble generator B3. The substance is agglomerated, floated and removed, and the water to be treated is clarified water, and the chlorine ion and hardness are removed through the step of being transferred and filtered to the filtration chamber 5.

Since chlorine ions and hardness are simultaneously removed and heavy metals and cyan are also removed during hardness removal, the treatment cost is greatly reduced.

Hereinafter, the configuration and the embodiment of the present invention will be described.

1 is a process conceptual diagram of the present invention.

In Fig. 1, the treatment tank T has a sequential mixing chamber 1, a first circulating oxidation chamber 2, a second circulating oxidation chamber 3, and floating by the partition diaphragm E1, E2, E3 and E4 therein. It is divided into a separation chamber 4 and a filtration chamber 5 to form a quadrangular shape and configured to allow a natural flow of the influent.

The mixing chamber 1 is provided with an inlet tube 6 at an upper portion thereof, and a caustic soda inlet tube 7 is connected to the inlet tube 6, and the mixing chamber 1 and the first circulating oxidation chamber 2 are provided. The partition diaphragm E1 which divides is secured in the lower part, and this space becomes a conveyance path of the to-be-processed water, and one discharge port of the discharge apparatus 13 attached to the 1st circulation oxidation chamber 2 is provided in this space. It is placed toward the mixing chamber 1 to diffuse the ultra-porous air bubbles, and the treated water and caustic soda flowing into the mixing chamber 1 are mixed.

The inlet pipe 6 is connected to a collecting pipe (not shown) to introduce the water to be treated, and the caustic soda inlet pipe (7) is connected to each other to a caustic soda tank (not shown) and the caustic soda inlet automatic control device to have a pH of 11 or more. The flow rate of caustic soda is automatically adjusted to maintain it.

Mixing chamber 1 configured as described above is mixed with the incoming water and caustic soda to maintain a pH of 11 or more to transfer to the first circulating oxidation chamber (2).

The first circulating oxidation chamber (2) includes a skimmer for recovering suspended substances on the surface of the water, a floating material conveying passage, a caustic soda inlet (7-1), a conveying pipe (8), and a discharge device (13), which is not shown at the top. ) Is installed, and the discharge device 13 is connected to the first ultra-small force generating device (B1) installed outside through the pressure feed pipe (14), the first ultra-small force generating device (B1) is the number of bubbles It is connected to the first circulating oxidation chamber 2 through the supply pipe 21 to receive the supply, and to the compressor C through the supply pipe 19.

The skimmer is placed on the surface of the first circulating oxidation chamber (2), and collects the contaminated suspended solids floating on the surface by rotational action and discharges them to the outside through the suspended solids transfer passage.

The caustic soda inflow pipe 7-1 is adjusted to PH 11 so that when the pH of the treated water is drastically lowered, caustic soda flows to restrict and maintain the pH to 11.

The transfer pipe 8 transfers the treated water to the next process.

The discharging device 13 discharges and diffuses the ultra-microporous air bubbles generated by the first ultra-small air bubble generating device B1 into the first circulation oxidation chamber 2.

The first ultra-fine foam generating device B1 receives compressed air from the compressor C, generates the ultra-fine air bubbles, and delivers the compressed air to the discharge device 13.

In the above, the discharged device 13 and the bubble water supply pipe 21 connected to the pressure feed pipe 14 are connected together to the first circulation oxidation chamber 2, so that the water to be treated in the first circulation oxidation chamber 2 is not the first ultrafine. The repetitive circulation is performed by the force gun generator B1.

The second circulation oxidation chamber 3 is provided with a skimmer for recovering suspended substances on the surface of the water, a floating material conveying passage, a conveying pipe 9, and a discharging device 15 at the lower portion, which is not shown in the upper portion. ) Is connected to the second ultra-small microbubble generating device (B2) installed on the outside through the pressure feeding pipe 16, the second ultra-microbubble generating device (B2) is made through the supply pipe 22 to receive the bubble water It is connected to the second circulation oxidation chamber (3) while connected to the ozone generator (A) through the required pipe, the ozone generator (A) is connected to the oxygen generator (A1).

The skimmer is placed on the water surface of the second circulating oxidation chamber (3), and collects the contaminant floating material floating on the surface by a rotating action and is discharged to the outside through the floating material transport passage.

The transfer pipe 9 transfers the treated water to the next process.

The discharge device 15 discharges and diffuses the ultra-fine ozone bubbles generated by the second ultra-fine bubble generator B2 into the second circulation oxidation chamber 3.

The second ultra-fine bubble generator B2 receives ozone from the ozone generator A, generates ultra-fine ozone bubbles, and pumps them to the discharge device 15. The ozone generator A is oxygen in the oxygen generator A1. Received to generate ozone, the oxygen generator (A1) generates oxygen and supplies it to the ozone generator (A).

In the above, the discharged water 15 and the bubble water supply pipe 22 connected to the pressure feed tube 16 are connected together to the second circulation oxidation chamber 3, so that the water to be treated in the second circulation oxidation chamber 3 is slightly different. The repetitive circulation is performed by the force gun generator B2.

The floating separation chamber 4 is discharged from a skimmer for recovering suspended solids on the surface of the water, a floating material conveying passage, a coagulant inflow pipe 10, a polymer flocculant inflow pipe 11, a transport pipe 12, and a lower portion of the floating material not shown at the top. An apparatus 17 is provided, which is connected to a third ultra-small force generating device B3 externally installed through the pressure feed pipe 18.

The third ultra-fine air bubble generator (B3) is connected to the filtration chamber (5) through the supply pipe 23 to receive the bubble water, while the compressed air is connected to the compressor (C) through the compressed air supply pipe (20) It is supplied and produced into an ultra-microporous bubble, and then pumped to the discharge device 17.

The coagulant inlet tube 10 is introduced into the aluminum sulfate, the polymer coagulant inlet tube 11, anion, or cationic, the inflow amount is connected to the automatic control device not shown is adjusted.

Ultra-fine air bubbles are discharged and diffused in the flotation separation chamber 4, and when aluminum sulfate is injected, PH diffuses into the water by the diffusion force of the ultra-fine air bubbles discharged by the third ultra-fine air bubble generator B3, It is lowered to neutral, and the polymer flocculant is injected, and the suspended solids generated by oxidation and reduction are flocculated and floated to the surface.

The skimmers are placed on the surface of the floating separation chamber 4, and the polluted suspended solids floating on the surface are recovered by rotational action and discharged to the outside through the suspended solids transfer passage.

The transfer pipe 12 transfers the treated water to the next process.

The discharging device 17 discharges and diffuses the ultra-microporous air bubbles generated by the third ultra-fine air bubble generating device B3 into the floating separation chamber 4.

The filtration chamber 5 is equipped with a plurality of activated carbon filtration nets (S) therein, the filtration net (S) is filled with activated carbon, the filtration nets (S) is to be replaced from the top to the outside to replace, the third ultra fine The bubble water supply pipe 23 is connected to the strength bubble generator B3, and the filtrate discharge pipe D is installed to discharge the treated water.

The activated carbon filtration chamber 5 is filtered while the inflow water flows from the top to the bottom, and the discharge pipe D discharges the filtered water to the reuse destination.

There are several methods for generating microbubbles, and examples of the microbubble generating method that are generally used include: 20-80 microns of the overflow turbine type, 10-20, or 50-60 microns, the line mixer type 0.5- It is known to produce microbubbles of 3 micron diameter.

As the ultra-miniature bubble generator (B1, B2, B3) used in the present invention, a line mixer type ultra-fine bubble generator (registered No. 0510405) registered with the Korean Intellectual Property Office is used. It generates and discharges bubbles of -0.5 micron ultra fine aperture, and microbubbles have characteristics according to the diameter of the bubbles, and use them according to the characteristics as follows, and line mixer type ultra-fine bubble generator (Registration 0510405) The ultra-miniature bubbles generated in the arc) become micro-nano bubbles and micro-nano ozone bubbles, and have the same processing capacity.

Microbubbles were classified according to characteristics in the Environmental Management Research Division of the Institute of Industrial Technology of Japan, which had a bubble diameter of 50 microns or less and 10 microns (μm). Nm) were classified as nano-bubbles and 200 nanometers (nm) or less as nano-bubbles, and micro-nano bubbles were defined as having nano-bubbles and long-term survival when contracted.

In the present invention, the ultra-porous air bubbles are micro-nano air bubbles, and the ultra-fine ozone bubbles are micro-nano ozone bubbles.

Hereinafter will be described an embodiment of the present invention.

As the water to be treated flows into the mixing chamber 1 of the treatment tank T through the inlet pipe 6, caustic soda is also introduced into the treatment tank T, and the amount of the water to be treated according to the predetermined residence time flows into the treatment tank T. , The water to be treated is adjusted to PH 11 or more, and the first, second, and third ultra-microscopic bubble generators B1, B2, B3 operate.

The water to be transferred to the first circulating oxidation chamber (2) is contacted with the ultra-porous air bubbles in the water at underwater pressure, and then circulated to the first ultra-small bubble generator (B1) to generate the first ultra-small bubble generator ( In the sealed space of B1), the action of mixing, pulverizing, and pressurizing with compressed air above 6 atm and discharging and diffusing to underwater pressure below 1 atm is repeated during residence time. The device becomes finer and the treated water becomes monomolecule or ionized by the collapse of the CRUST, and the oxidation and reduction by the ultra-porous air bubbles proceeds, causing the floating material to float and removing the floating material. As a result, the first treatment is performed and the water to be treated is transferred to the second circulating oxidation chamber 3.

The treated water transferred to the second circulating oxidation chamber 3 is circulated to the second ultra-small bubble generator B2 after being in contact with the ultra-fine ozone bubbles in the water at underwater pressure, and then the second ultra-small bubble generator ( In the confined space of B2), the action of mixing, pulverizing and pressurizing with ozone gas above 6 atm and discharging and diffusing to underwater pressure below 1 atm is repeated during residence time. Micronized by ozone bubbles, the water to be treated is monomolecule or ionized by the collapse of CRUST, and oxidation and reduction by ultra-fine ozone bubbles proceeds, causing floating materials to float on the water surface. By being removed, secondary treatment is effected and the water to be treated is transferred to the flotation separation chamber 4.

Ultra-porous air bubbles are discharged and diffused in the flotation separation chamber 4, and aluminum sulfate is injected into the treated water to be transferred, and the pH is lowered to neutral, followed by injection of the polymer flocculant into the first circulating oxidation chamber (2), Uncontaminated contaminants in the second circulating oxidation chamber (3) are agglomerated and form pulleys to rise to the surface, and the injured contaminants are separated and discharged to the outside, and the treated water from which the contaminants are separated is clarified. The ions are transferred to the filtration chamber 5 and filtered to remove chlorine ions and hardness.

In the clarified water separated above, chlorine ion and hardness are removed by 90% or more.

The separated clarified water is transferred to the filtration chamber 5 so that residual chlorine ions and hardness are filtered to remove chlorine ions and hardness.

Through the above process, chlorine ions and hardness contained in the water to be treated are removed with high accuracy and can be used as reused water.

1 is a process conceptual diagram of the present invention.

[Explanation of code]

A: ozone generator A1: oxygen generator

B1, B2, B3: Ultra-small force generating device C: Compressor

       D: discharge pipe E1, E2, E3, E4: diaphragm

       T: Treatment Tank

       1: mixing chamber 2: first cycle oxidation chamber

       3: second cycle oxidation chamber 4: flotation separation chamber

       5: filtration chamber 6: inlet pipe

       7 · 7-1: Caustic soda inlet tube 8 · 9 · 12: transfer tube

       10.11: flocculant inflow pipe

       14, 16, 18: pressure feed pipe 13, 15, 17: discharge device

       19, 20, 21, 22, 23: Supply pipe

Claims (3)

Caustic soda inlet pipe (7) is connected to the inlet pipe (6) installed in the upper, the mixing chamber (1) and the mixing chamber (1) where space is secured below the partition plate (E1) of the first circulation oxidation chamber (2) ), Schemes, conveying passages, caustic soda inflow pipes (7-1), conveying pipes (8), and discharge devices (13) having two discharge ports in the lower part are provided, and the discharge device (13) is a pressure feed pipe. It is connected to the first ultra-small microbubble generating device (B1) through 14, the first ultra-small microbubble generating device (B1) is connected to the compressor (C) through the supply pipe 19, the bubble water supply pipe (21) The first circulating oxidation chamber (2) connected to the first circulating oxidation chamber (2) through, A discharge device 15 is provided at the bottom of the skimmer, the conveying passage, the conveying pipe 9, and the lower part for recovering the suspended solids, and the discharging device 15 is connected to the second ultra-small force generating device B2 through the feeding pipe 16. It is connected to, the second ultra-miniature bubble generator (B2) is connected to the second circulating oxidation chamber (3) through the bubble water supply pipe 22, while connected to the ozone generator (A) through the required pipe, The ozone generator (A) is a second circulation oxidation chamber (3) connected to the oxygen generator (A1), A discharge device 17 is provided at the bottom of the skimmer, the conveying passage, the flocculant inflow pipe 10, the polymer flocculant inflow pipe 11, and the lower part, and the discharge device 17 is formed through the pressure feed pipe 18. It is connected to the three ultra-small microbubble generating device (B3), the third ultra-small microbubble generating device (B3) is connected to the filtration chamber (5) through the bubble water supply pipe (23) while the compressor (C) through the supply pipe (20) Float separation chamber (4), Underwater chlorine ion and hardness treatment apparatus, characterized in that the filtration chamber (5) is filled with a plurality of activated carbon filled inside, and the filtration chamber (5) in which the filtered water discharge pipe (D) is installed in the lower portion is sequentially connected. The method of claim 1, wherein the water to be treated in the first circulating oxidation chamber (2) and the second circulating oxidation chamber (3) passes through the supply pipe (21 · 22) for the first and second ultra-fine air bubble generators ( Underwater chlorine ion and hardness treatment apparatus characterized in that it is repeatedly circulated by B1 · B2, connected to the discharge device (13 · 15) through the pressure feed pipe (14 · 16). The water to be treated adjusted to PH 11 or more is mixed, pulverized and mixed with compressed air or ozone gas to 6 atm or more while being repeatedly circulated to the sealed space of the ultra-fine foam generator B1 and B2. It is pressurized and discharged and diffused by rapid underwater pressure of 1 atm or less, so compressed air is ultra-fine air bubbles, ozone gas is ultra-fine ozone bubble, and treated water is decomposed into a single molecule or ionized water group (CRUST). Underwater chlorine ion and hardness treatment method characterized in that.

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