KR200289275Y1 - Treatment apparatus of sewage and wastewater by micro ozone bubble - Google Patents

Abstract

Wastewater using ozone bubbles that input small particles of ozone into wastewater to adsorb, float, and oxidize high-concentration organic matter, heavy metals, nitrogen, phosphorus, suspended solids, etc. It relates to a processing apparatus.

The wastewater treatment apparatus by the ultra-fine ozone bubble floating apparatus includes: a to-be-processed portion in which wastewater is introduced and chemically treated; A pressure pump for sucking the waste water in the to-be-processed part and supplying it to the gas / liquid mixer; A compressor for supplying compressed air to waste water of the gas / liquid mixer; An ozone generator for supplying ozone to the waste water of the gas / liquid mixer together with the compressed air; A gas / liquid mixer for mixing the waste water supplied by the pressure pump with the compressed air and ozone supplied from the compressor and the ozone generator and dissolving it in the waste water; A pressurized tank for pressurizing and storing waste water containing gas dissolved and dissolved therein; A supply pipe for supplying compressed pressurized water of the pressurized tank to a chemically treated part; Provided is a wastewater treatment apparatus using ultra-fine ozone bubbles, including a pressure valve mounted at the end of the supply pipe and opened at a predetermined pressure.

Description

Wastewater treatment system using ultra-fine ozone bubbles {TREATMENT APPARATUS OF SEWAGE AND WASTEWATER BY MICRO OZONE BUBBLE}

The present invention relates to a wastewater treatment apparatus using ultra-fine ozone bubbles, and more particularly, to put high-density organic matter, heavy metals, nitrogen, phosphorus contained in wastewater by adding ozone (O₃) bubbles of small particles to wastewater. The present invention relates to a wastewater treatment apparatus using ozone bubbles, which is configured to adsorb, float, and oxidize hardly decomposable substances such as suspended solids.

Generally, many kinds of foreign substances are contained in wastewater or wastewater discharged from homes, businesses, and factories.If these wastewaters are discharged untreated, side effects such as pollution and eutrophication of rivers and rivers are destroyed and ecosystems are destroyed. Occurs.

Therefore, a sewage terminal treatment plant for removing various foreign substances and heavy metals contained in such wastewater is installed in each region and treated with wastewater and discharged into rivers and rivers.

In order to remove foreign substances contained in the waste water, various waste water treatment methods have been proposed in combination with a physical method and a chemical method, or a combination of them. Floating separation methods are known in which various foreign matters, such as oily solids, float to the surface and are removed.

In this floating separation method, when the coagulant is added to the waste water stored in the coagulation bath for purification, the coagulant is mixed and the mixed portion is extracted, and hot air is dissolved therein to form a compressed liquid.

The compressed liquid is mixed with the solidified portion again, and bubbles of about 30 to 40 microns are stuck to the sediment in the wastewater, and the precipitate floats up with the bubbles to float in the separation tank. Removing this will remove foreign substances.

This method can be applied to the separation of oil contained in water. If a compressed liquid containing air dissolved as described above is added to water mixed with oil, the oils and suspensions mixed in the water in the bubble are different. It will be stuck, and the foreign material will be removed by removing it.

As such, the floating separation method utilizes the adsorption action of bubbles generated from the compressed liquid containing dissolved air, and the bubbles become more active as the pressure changes dramatically when they expand and burst in the liquid. .

And since the pressure of water is higher than that of bubbles, this change in pressure occurs more actively in smaller bubbles.

As a result, the pressure of the water becomes higher, so that in the case of large bubbles in which a larger amount of air is dissolved, the action of sticking in the water becomes more vigorous.

Therefore, the floating effect due to the action of the bubbles sticking is greater the higher the pressure of the water.

However, the wastewater treatment method according to the conventional floating separation method as described above is dissolved in the wastewater because the pressure is released at the moment when the compressed wastewater containing only dissolved air is mixed with the mixed wastewater solidified. The air content of the compressed waste water is reduced as the air is changed to the bubble, and for this reason there is a problem that the bubble pressure falls.

As a result, there are changes in the time when the bubbles expand and expand and burst in the coagulation / mixing tank, and there is a disadvantage in that sufficient bubbles cannot be made due to the action of the bubbles sticking.

And the wastewater treatment apparatus using the conventional floating separation method, floated by the coagulation / mixing tank for dosing and mixing the coagulant medicine to the waste water to be purified, and the method of adhering bubbles dissolved in the solution to the coagulation materials Floating separation tank and the like for separation is a limited way.

Therefore, the present invention has been devised to solve the conventional problems as described above, the object of the present invention is to put the ozone bubbles of small particles together with the compressed air into the waste water, high concentration organic matter contained in the waste water impossible by biological treatment method The present invention provides a wastewater treatment apparatus using ozone bubbles that are made to adsorb, float and oxidize hardly decomposable substances such as heavy metals, nitrogen, phosphorus, and suspensions.

As such, the ozone bubbles of the fine particles introduced into the waste water adsorb and float coagulates, suspended matter, organic matter, and nitrogen phosphorus contained in the waste water. .

In addition, ozone bubbles dissolved in waste water and gas are expanded and activated by ultra-fine bubble particles to oxidize and kill hardly decomposable high-concentration organic substances, heavy metals and pathogenic microorganisms, and deodorize, decolorize, remove turbidity, and decompose surfactants. Exert.

The wastewater treatment using the ozone bubble of the present invention has a much shorter wastewater treatment time than the biologically active OH method and the catalytic oxidation method widely used in the related art.

That is, the conventional biological wastewater treatment method is treated after the residence time takes 4 to 8 hours so that the wastewater can generate a biological reaction in the treatment tank, but the present invention is a wastewater within 1 hour at the smallest facility size. It is configured to handle it perfectly.

In addition, the present invention can be used for various purposes depending on the conditions, such as the purpose for the purpose of adsorption injury, the purpose of oxidation, the purpose of oxidation and adsorption injury, and the like contained in the waste water.

1 is a layout view showing the overall installation state of the wastewater treatment apparatus according to the present invention.

Figure 2 is a partially enlarged perspective view of a part of the housing of the gas / liquid mixer provided in the wastewater treatment apparatus of the present invention.

3 is a cross-sectional view of a gas / liquid mixer provided in the wastewater treatment apparatus of the present invention.

Figure 4 is a cross-sectional view of the pressure valve provided in the wastewater treatment apparatus of the present invention.

In order to realize the object of the present invention as described above, a preferred embodiment of the present invention, a process for sucking the waste water stored in the processing target part at a predetermined pressure and into the gas / liquid mixer; Injecting compressed air into the wastewater introduced into the gas / liquid mixer; Mixing the waste water and compressed air introduced into the gas / liquid mixer; Pressurizing the waste water mixed with compressed air and temporarily storing the waste water in a pressurized tank; Injecting the pressurized waste water back to the processing unit to lift and remove the foreign matter contained in the waste water by compressed air,

Wastewater treatment using ultra-fine ozone bubbles, including an ozone input process for generating ultra-fine bubbles by inserting a predetermined amount of ozone in the compressed air input process so that foreign matters contained in the waste water can be further floated during the foreign material removal process. Provide a method.

In addition, the present invention, the waste to be treated is chemically treated to be introduced; A pressure pump for sucking the waste water in the to-be-processed part and supplying it to the gas / liquid mixer; A compressor for supplying compressed air to waste water of the gas / liquid mixer; An ozone generator for supplying ozone to the waste water of the gas / liquid mixer together with the compressed air; A gas / liquid mixer for mixing the waste water supplied by the pressure pump with the compressed air and the ozone supplied from the compressor and the ozone generator and dissolving it in the waste water; A pressurized tank for pressurizing and storing waste water containing gas dissolved and dissolved therein; A supply pipe for supplying compressed pressurized water of the pressurized tank to a chemically treated part; Provided is a wastewater treatment apparatus using ultra-fine ozone bubbles, including a pressure valve mounted at the end of the supply pipe and opened at a predetermined pressure.

In the wastewater treatment apparatus using such an ozone bubble, the wastewater of the to-be-processed part chemically treated by the pressure pump is sucked and supplied to the gas / liquid mixer together with the compressed air from the compressor and the ozone generated in the ozone generator. Air and ozone are mixed with each other while maintaining the pressure at which air and ozone can be dissolved in waste water.

And since the pressure valve is mounted at the inlet end of the supply pipe located in the processing part, the compressed waste water containing dissolved ozone and air is supplied from the pressurized tank to the supply pipe, and the waste water is pressurized with a larger amount. It is supplied from a valve to a to-be-processed part.

Then, the waste water is changed into fine bubbles and air in the ozone air dissolved in the treated portion, and as a result, micro-bubbles containing ozone are generated in the waste water in the treated portion and expand and stick to the coagulum contained in the waste water. It comes to mind.

At this time, the harmful substances of the waste water, high concentration hardly decomposable organic substances, heavy metals, pathogenic microorganisms, etc. are oxidized and sloped in the process of incorporation of dissolved ozone and ozone fine particles which are not completely dissolved by the microbubbles.

The dissolution gas in the waste water supplied to the processing object at the time of purification of such waste water continues to be dissolved until it is treated and discharged from the processing object by the pressure valve described above.

The gaseous components dissolved in the waste water are always kept in a predetermined state or higher, which is located in the supply pipe in the processing unit, and the pressure is released due to the pressure valve that discharges the pressure beyond the predetermined state. Because it is maintained.

Accordingly, the wastewater treatment method and apparatus of the present invention, the end of the supply pipe for supplying the compressed wastewater to the chemically treated target part can maintain the predetermined pressure, if necessary, the device is configured by increasing the supply pipe The purification process can be performed regardless of the pressure pump, gas / liquid mixer, pressurized tank, and the like.

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

1 is a layout showing the overall installation state of the wastewater treatment apparatus according to the present invention, 2 is a gas / liquid mixer, 4 is a gas / liquid mixer (2) from the processing unit 100 for treating waste water The pressure pump provides waste water, and reference numeral 6 denotes a compressor for supplying compressed air into the waste water to be supplied to the gas / liquid mixer 2 by the pressure pump 4.

A non-return valve 5 may be installed between the gas / liquid mixer 2 and the pressure pump 4 to prevent wastewater supplied to the gas / liquid mixer 2 from going back to the pressure pump 4.

And reference numeral 8 denotes a pressurized tank, reference numeral 10 denotes a pressure valve mounted at an end of a supply pipe connected to the pressurized tank 8 and opened at a predetermined or higher pressure state, and numeral 12 denotes an ozone generator. Is supplied to the waste water together with the compressed air generated in the compressor (6) to be supplied to the gas / liquid mixer (2) by the pressure pump (4) to mix and dissolve.

The ozone generated through the ozone generator 12 is reported as 4.6 × 10 3 (atm.m 3 / mol) at 20 ° C. according to Henry's law, and it is insoluble in water and 1 in a nonpolar organic solvent. It melts and dissolves more than 60% of which is only about 10%, and the remaining 40% is adsorbed to micro bubbles of less than about 3 microns, contributing to maximize the treatment of high concentration wastewater purification.

In particular, ozone has a high oxidation potential (2.07V) after fluorine and OH as a powerful oxidizing agent, so it oxidizes all heavy metals, microorganisms and organic materials except platinum and silver.

The method for purifying wastewater using the wastewater treatment apparatus using the ozone bubble of the present invention is as follows.

First, the float valve 14 is mounted at the front end of the suction pipe 16 connected to the pressure pump 4, and the pressure valve 10 is mounted at the front end of the supply pipe 18 located in the processing target 100. do.

In this state, the waste water of the to-be-processed part 100 is sucked by the pressure pump 4, and the compressed air generated by the compressor 6 and the ozone generated by the ozone generator 12 are transferred to the gas / liquid mixer 2; When supplied at a predetermined pressure, the waste water is dissolved while being mixed with compressed air and ozone in the gas / liquid mixer 2.

The waste water dissolved under pressure is supplied to the pressurized tank 8 again through a pipe, and then supplied to the processing unit 100 from the pressure valve 10 mounted at the tip of the supply pipe 18. At the same time as the micro-bubble (200) consisting of compressed air and ozone bubbles dissolved in the air swells and expands, the micro-bubbles (200) cling to the coagulum (300) to float the coagulum (300). The ozone dissolved in the process and undissolved fine particles oxidize and kill hardly decomposable harmful substances and organic substances.

That is, according to Henry's law that the solubility of the gas dissolved in the liquid increases as the pressure increases, the waste water introduced into the to-be-processed part 100 has a high of 5-7 kg / cm 2 generated by the pressure pump 4. In the process of over-saturation while the pressure of air and ozone flows together and stays in the pressurized tank for about 10 to 20 seconds, the introduced ozone melts more than 50% and dissolves in the waste water, and the waste water is discharged from the pressurized tank 8 to atmospheric pressure. When it flows into the to-be-processed part 100, a fine ozone concentrated bubble with an average particle diameter of less than about 3 microns occurs because of a sudden decrease in pressure.

As such, the fine ozone enrichment bubble of less than 3 microns is very small in size, so as to expand, the force for adsorbing the foreign matter contained in the wastewater increases, and the adsorption injury of the foreign matter occurs rapidly, and the contact density with the wastewater is increased. It diffuses significantly and increases the amount of dissolved oxygen in the waste water.

Therefore, the micro-bubble 200 is coupled to the particles suspended in the interior of the processing unit 100 or in the colloidal state, causing almost all of the foreign matter to be adsorbed.

When treating such waste water, it is preferable to inject an appropriate amount of flocculant into the processing unit 100.

The gas / liquid mixer 2 pressurizes the compressed air supplied from the compressor 6 and the ozone supplied from the ozone generator 12 to pressurized water supplied from the processing unit 100 by the pressure pump 4. It serves to mix so that waste water is dissolved.

These gas / liquid mixers 2, as shown in FIGS. 2 and 3, intersect each other in a clockwise and counterclockwise direction with a cylindrical housing 20 at an angle of 180 degrees inside the housing 20. It consists of a rotating member 22, 24 continuous to the state.

When waste water, compressed air and ozone flow into the housing 20 of the gas / liquid mixer 2 under pressure, they are rotated by a clockwise rotating member 22 and a counterclockwise rotating member 24. Divided.

Then, the divided waste water, compressed air and the flow of ozone are continuously switched alternately through the clockwise rotating member 22 and the counterclockwise rotating member 24, and thus, the wastewater, air, and ozone are mixed with each other in the wastewater. The air will dissolve.

In this case, the waste water, the compressed air, and the ozone flow continuously move from the center of the housing 20 toward the inner wall, and vice versa, in the opposite direction along the helical surface of the rotating members 22, 24. The mixing efficiency is improved.

That is, as the compressed air and ozone continue to flow into the housing 20 together with the waste water, the introduced waste water and air and ozone are induced in the direction along the rotational direction of the clockwise rotating member 22, and then counterclockwise. As the direction of rotation of the rotary member 24 suddenly changes, the mixing effect is amplified as it is suddenly entangled. In this way, air and ozone are dissolved in waste water as the above processes are repeated.

The pressure pump 4 sucks the waste water of the processing unit 100, pressurizes the waste water further from the gas / liquid mixer 2 in a pressurized state, and once again through the pressure tank 8, the processing unit 100. ) To supply.

The pressure pump 4 may be one having a final pressure of approximately 5 to 7 kg / cm 2, and when not added, an injector may be disposed on the upper side of the pressure pump 4.

This is to pre-inject the sprayed air into the waste water to mix with the compressed air supplied from the compressor (6).

The injector is typically arranged with a nozzle formed axially towards the gathering portion of the cylindrical housing center and an inlet pipe near the nozzle for introducing air from the housing outer wall into the nozzle.

This injector injects the waste water supplied to the housing into the collecting portion, whereby air is drawn from the inlet pipe and injected into the waste water by the force of vacuum and spray flow.

In this way, when the injector pre-injects the air arranged on the upper side of the pressure pump 4, while the air is being strongly mixed due to the vortex pump equipped with a propulsion device such as the pressure pump 4, the injector The mixing effect of the wastewater supplied from the waste pump to the pressure pump 4 is amplified by the vortex, so that the dissolution of air and ozone in the wastewater can be further promoted.

The compressor (6) supplies compressed air and ozone generated by the ozone generator (12) to the wastewater supplied to the gas / liquid mixer (2) by the pressure pump (4) to convert the pressure of the compressed air into pressure wastewater. The pressure can be properly adjusted.

In addition, in the case of using a gas other than air, the gas may be supplied after being sucked from the reservoir filled with the gas, compressed, and in this case, the gas may be supplied by connecting the injector from the reservoir.

The pressurized tank 8 is stored in a state where the waste water mixed with the compressed air and ozone is dissolved under pressure by the gas / liquid mixer 2, and is stored under pressure. An upper portion of the pressurized tank 8 includes an air discharge silencer ( An air out silencer (30) is mounted to release the remaining air and ozone to the outside without being dissolved in the waste water compressed in the pressure tank (8).

In this case, harmless gases such as air or ozone are directly emitted into the atmosphere, but other harmful gases or expensive gases are transferred to an air tank (not shown) or a similar type of tank through an air emission silencer 30. To be recovered.

The pressure valve 10 is mounted at the outlet end of the supply pipe 18 connected to the pressure tank 8, and the waste water mixed with compressed air and ozone from the supply pipe 18 In order to be supplied under pressure to 100, the waste water is opened when the waste water is supplied from the supply pipe 18 in a state exceeding the predetermined pressure, but the pressure of the waste water supplied from the supply pipe 18 is set to the predetermined pressure. It is configured to close when it cannot be exceeded.

As such, by mounting the pressure valve 10 that does not open unless the predetermined pressure is exceeded in the supply pipe 18, the pressure of the wastewater supplied to the processing target 100 can be always maintained at a predetermined or higher pressure. .

Therefore, since the amount of ozone and air dissolved in the compressed waste water is continuous, and very fine bubbles 200 can be generated in the processing unit 100 while maintaining a higher concentration, the fine ozone bubbles solidify. It can stick to water 300 and float, and hardly decomposable organic substances are oxidized in the process.

At this time, since the pressure of the waste water always maintains the predetermined pressure or higher pressure by the pressure valve 10, the predetermined purification effect can be expected as long as the supply pipe 18 is arranged in the processing unit 100. Regardless of the position of the processing unit 100, a purification process may be performed by appropriately extending and moving the supply pipe 18 to a desired position.

As shown in FIG. 4, the pressure valve 10 has an inlet 46 connected to the supply pipe 18 through a valve 44 which is urged by an elastic member 42 made of a compression coil spring. It is configured to elastically open and close between the outlets 48 opened by the processing unit 100.

That is, when the wastewater flowing into the inlet 46 through the supply pipe 18 in the state containing compressed air exceeds the predetermined pressure, the valve 44 causes elasticity of the elastic member 42 due to the pressure of the wastewater. The waste water is introduced into the to-be-processed part 100 through the outlet 48.

The pressure valve 10 may be widely used as a safety valve that maintains the pressure of the liquid in the pipe under a predetermined pressure or higher pressure.

However, the pressure valve 10 provided in the present embodiment is mounted at the end of the supply pipe 18 to supply to the processing unit 100 from the supply pipe 18 while always maintaining a predetermined or higher pressure state. It is used to maintain the pressure of the waste water, and the pressure valve 10 provided in this embodiment is intended to open when the pressure of the waste water exceeds 5 kg / cm 2.

Although the present embodiment has been described in connection with a hardly degradable wastewater treatment method, the present invention is not limited thereto. For example, the oil / water separation system may have the same structure as the wastewater treatment method and apparatus.

In the case of this oil / water separation purification process, compressed air dissolved in the compressed liquid is supplied from the pressure valve 10 at the inlet end of the supply pipe 18 so as to have very fine bubbles in the processing unit 100. When the fine bubbles are attached to the oil in the liquid to be chemically treated to expand in the processing unit 100, the oil rises to separate the oil and water.

As described above, the wastewater treatment apparatus using ultra-fine ozone bubbles according to the present invention compresses the wastewater together with the ozone generated from the ozone generator and the compressed air, and inputs the wastewater into the wastewater of the to-be-processed part, thereby preventing the fine bubbles containing ozone Since it is made to expand in the waste water in the treatment part, it is possible to reduce the treatment time of the waste water and increase the treatment efficiency of the waste water by more quickly and floating the foreign matter contained in the waste water.

In addition, the outlet of the supply pipe is equipped with a pressure valve that opens at a predetermined pressure or higher, so that the waste water can be supplied to the processing part because the pressure of the waste water supplied to the processing part can be maintained at a predetermined state or more. Dissolution continues until the compressed air and ozone dissolved in the compressed wastewater are supplied from the pressure valve to the treated part and converted into micro bubbles, effectively adhering to the sediment contained in the waste water of the treated part so that fine precipitates also float. As it continues to swell, a constant purge is maintained, resulting in a complete purge.

And in the wastewater treatment apparatus of the present invention, while the compressed wastewater is supplied from the supply pipe to the to-be-processed portion, ozone air dissolved in the compressed wastewater is converted into bubbles, and the fine bubbles are generated and expanded in the to-be-processed portion, The oil in the treated part sticks and floats, which can be used as an oil / water separation system that can separate oil and water perfectly.

Claims (10)

(Correction) a treatment part into which waste water flows; A pressure pump connected to the processing unit and a pipe to suck waste water inside the processing unit to the outside of the processing unit and supply the gas to the gas / liquid mixer; A compressor connected between the pressure pump and a gas / liquid mixer to supply compressed air to waste water supplied to the gas / liquid mixer; An ozone generator connected to the compressor and supplying ozone bubbles to the waste water supplied to the gas / liquid mixer together with the compressed air by the pressure of the compressed air generated by the compressor; A gas / liquid mixer for dissolving compressed air and ozone bubbles in the waste water by mixing the waste water sucked through the pressure pump with compressed air and ozone bubbles supplied from a compressor and an ozone generator; In the pressurized tank connected to the gas / liquid mixer to pressurize the waste water containing dissolved gas and ozone bubbles to temporarily saturate the gas and ozone bubbles, The pressurized tank is connected with a supply pipe for injecting compressed wastewater into the processing unit, and a pressure valve is installed at an outlet end of the supply pipe so that the wastewater mixed with compressed air and ozone is supplied under pressure into the processing unit. Wastewater treatment apparatus using ultra-fine ozone bubbles, characterized in that. delete delete (Correction) The gas / liquid mixer according to claim 1, characterized in that the gas / liquid mixer is composed of a cylindrical housing and a plurality of rotating members which are maintained in an intersecting state in different directions while maintaining an angle of 180 degrees in the housing. Wastewater treatment system using ultra-fine ozone bubbles. (Correction) The method according to claim 4, wherein the rotating members are divided into a clockwise rotating member and a counterclockwise rotating member so that the waste water and air and ozone introduced into the housing in the direction along the rotational direction of the clockwise rotating member. After being induced, the wastewater treatment apparatus using ultra-fine ozone bubbles, characterized in that the mixing effect is amplified as the direction of rotation suddenly changes suddenly according to the direction of rotation of the counterclockwise rotation member. (Correction) The ultra-fine ozone bubble according to claim 1, wherein a non-return valve is installed between the gas / liquid mixer and the pressure pump to prevent the waste water supplied to the gas / liquid mixer from going back to the pressure pump. Wastewater Treatment System. (Correction) The waste water treatment according to claim 1, wherein the pressurized tank is equipped with an air discharge silencer to release the remaining air and ozone to the outside without being dissolved in the compressed waste water. Device. (Correction) The pressure valve of claim 1, wherein the pressure valve is configured to open when waste water is supplied from a supply pipe in a state exceeding a predetermined pressure, and closes when the pressure of the waste water supplied from the supply pipe does not exceed the predetermined pressure. Wastewater treatment apparatus using ultra-fine ozone bubbles, characterized in that configured to. delete delete