• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a wastewater treatment apparatus and a method using an electrolytic flotation method, wherein the interior of the main body (1) having the wastewater inlet pipe (8) and the treated water outlet (9) is formed by a porous membrane (4) in a first compartment ( 2) and the second compartment (3) and each compartment (2) (3) is installed in the first electrode plate 6 and the second electrode plate (7) for generating bubbles vertically, the first compartment ( 2, a skimmer 5 is installed on the upper portion of the second electrode plate, and the first electrode plate (10) is provided in the DC power supply 10 for supplying a constant voltage and current to the first electrode plate 6 and the second electrode plate 7. 6) and a timer 11 and a terminal are connected in order to alternately convert the positive electrode and the negative electrode of the second electrode plate 7 and the personal computer 12 and the photon counter 13 are connected to the electrode converting means. One electrode conversion system 14 constitutes a wastewater treatment device, and generates bubbles by applying a constant voltage to the first electrode plate and the second electrode plate provided inside the main body 1, and the bubbles are separated. During the process, minute and non-uniformly processed materials are attached to the bubbles to cause electrolytic injury, and at the same time, the electrodes of the electrode plate can be alternately converted into the positive electrode and the negative electrode using electrode conversion means. By introducing a COD agent into the second compartment 3 to selectively adsorb and decompose the wastewater, the current efficiency can be increased as well as a large amount of wastewater can be treated in a short time, thereby greatly contributing to environmental protection.
    公开号:KR19980087770A
    申请号:KR1019980038356
    申请日:1998-09-15
    公开日:1998-12-05
    发明作者:김기준；최재원；위성수
    申请人:최재원；김기준；
    IPC主号:
    专利说明:

    Wastewater Treatment System and Method Using Electrolytic Flotation
    The present invention relates to a wastewater treatment apparatus and method using an electrolytic flotation method, and more particularly, to automatically remove scales precipitated and aggregated on an electrode to increase current efficiency as well as to physically decompose and precipitate physicochemical properties. The present invention relates to a wastewater treatment apparatus capable of treating a large amount of wastewater in a short time and a method thereof.
    Along with the development of the industry, various environmental pollutants including wastewater are generated, resulting in serious pollution of the air, water quality, and soil. Among them, it is generated from factories, mines, livestock, agricultural production, and domestic wastewater. Wastewater that causes water pollution in rivers or rivers loses its self-cleaning action, making it more difficult to treat. Therefore, in recent years, the interest in the development of more selective and energy-saving wastewater treatment process, especially in advanced countries, has been increasing. In solving environmental problems, the electrochemical method improves the reactivity of pollutants contained in the wastewater and improves the treatment method to electrochemically decompose and remove environmental pollutants, and to monitor the pollutants using an electrochemical sensor. to be. In general, wastewater treatment using an electrochemical oxidation / reduction reaction does not require chemicals such as oxidizing agents and reducing agents, and therefore, subsequent treatment is unnecessary and is quickly processed. In addition, compared to other water treatment methods, the unit has a superior treatment capacity per unit volume, so it can be applied to wastewater treatment containing biologically harmful contaminants such as heavy metal ions, cyanide ions, and wasteols.
    However, the electrochemical wastewater method has not been generalized to the electrochemical device, its cost is high, and if the concentration of the material to be treated is low, the processing time is long because the material movement is slow, and the current is affected by the scale deposited on the electrode plate. There is a problem in that the side reaction is increased because of the increase in power consumption due to the decrease in efficiency and the increase in the solution resistance and the slow reaction rate for the material to be treated.
    An object of the present invention for solving the conventional problems as described above is to shorten the wastewater by using the physicochemical properties of the material to dissolve and precipitate as well as to increase the current efficiency by automatically removing the scale (Scale) precipitated on the electrode The present invention provides a wastewater treatment apparatus capable of treating a large amount and a method thereof.
    1 is a wastewater treatment apparatus according to the present invention.
    2 is a wastewater treatment system flow diagram according to the present invention
    * Description of symbols on the main parts of the drawings *
    1: main body 2: first compartment
    3: second compartment 4: porous membrane
    5: Skimmer 6: Aluminum electrode plate
    7: platinum-plated titanium electrode plate 8: wastewater inlet
    9 treated water outlet 10 DC power supply
    11: timer 12: computer
    13 photon counter 14 electrode conversion system
    According to the present invention for solving the above problems, if a certain voltage is applied to an electrode plate installed inside the main body of the device, water is decomposed and bubbles are generated. At this time, the charges stabilizing the colloid are neutralized by electric electrolysis and aggregation occurs. An effect that is likely to occur is generated so that a substance which is microscopically and non-uniformly present during the bubble rise is attached to the bubble and rises. In addition, in order to increase the rate of water treatment, the electrolyzer has a means for increasing the diffusion speed such as increasing the flow rate of the electrolyte or generating a large amount of bubbles, and increasing the electrode plate surface area per volume to shorten the material movement distance, and thereby Minimize the electrical resistance of the solution by minimizing it, and multipolar or three-dimensional electrolyzer using a granular electrode plate in the form of electrolytic reaction is prepared to be applied to solution electrolysis of low electrolyte concentration or low ionization degree. Therefore, the present application using the electrolytic flotation method is a new and highly efficient device capable of treating a large amount of wastewater in a short time by using the physicochemical properties of the material which not only increases the current efficiency but also decomposes and precipitates by the desalination treatment and electrode reaction, and It is about a method.
    Looking at the apparatus and method using the electrolytic flotation method of the present invention for achieving the above object with reference to Figures 1 to 2 below, the present invention forms a space therein and wastewater inflow for wastewater inflow A body 1 comprising a pipe 8 and a treated water outlet 9 for discharging the treated water, and a porosity separating the interior of the body 1 into a first compartment 2 and a second compartment 3. The first electrode plate 6, the second electrode plate 7, and the first compartment inside the membrane 4 and the first compartment 2 and the second compartment 3 are formed vertically to generate bubbles. It consists of a skimmer (5) for automatically removing the suspended solids, DC power supply (10) for supplying a constant voltage and current to the first electrode plate 6 and the second electrode plate (7) ) And a timer (1) in the DC power supply 10 to alternately convert the positive electrode and the negative electrode of the first electrode plate 6 and the second electrode plate 7. 1) and the terminal is connected to the electrode conversion means comprising a personal computer 12 and the photoelectric counter (Photon counter, 13) connected to the electrode conversion system (14).
    In the above configuration, the first electrode plate 6 is made of a bipolar electrode made of aluminum or a platinum electrode plate, and the second electrode plate 7 is made of an electrode plate of activated carbon or titanium plated with platinum. It consists of a bipolar electrode. On the other hand, the porous membrane 4 is made of a semi-permeable membrane, ceramic or porous plastic material.
    In addition, the wastewater treatment method according to the present invention includes a body 1 including a wastewater inlet pipe 8 and a treated water outlet 9, and an interior of the body 1 having a first compartment 2 and a second compartment. Porous membrane (4) divided by (3), the first electrode plate 6 and the second electrode plate (7), the first electrode plate installed perpendicular to the first compartment (2) and the second compartment (3) It consists of a skimmer (5) for automatically removing the floating solids in the compartment, by applying a constant voltage to the first electrode plate 6 and the second electrode plate (7) installed inside the main body (1) While the bubbles are rising, minute and non-uniform material to be treated is attached to the bubbles to cause electrolytic injury, and at the same time, the poles of the electrode plate are alternately converted into the positive electrode and the negative electrode using the electrode conversion means. It is designed to adsorb and decompose wastewater selectively by introducing COD into the second compartment. A waste water treatment method for ranging.
    Looking at the operation according to the present invention, the new device and method using the electrolytic flotation method to remove the water floating by attaching a suspension or the like to the fine bubbles generated by the electrolysis is high selectivity under mild conditions such as room temperature and atmospheric pressure Wastewater can be treated and in particular the adsorption and destruction of highly difficult to remove toxic organics, such as phenols dissolved in the wastewater, can efficiently decompose and float the reactants and products after the wastewater treatment, ie harmful organics. Since the wastewater treatment agent is easily separated and no scale is generated on the electrode plate, the current efficiency is good, and energy efficiency and wastewater treatment efficiency can be improved.
    Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.
    As shown in FIG. 1, the wastewater treatment apparatus of this embodiment includes a main body 1 having the first compartment 2 and a second compartment 3 therein, the first compartment 2, and the second compartment 2. (3) isolating, porous membrane (Membrane) 4 used to separate the floating solids, and a skimmer (5) for automatically removing and injuring the floating solids, the first compartment and the second compartment Aluminum or platinum electrode plate 6 installed in each, electrode plate 7 of activated carbon or platinum plated with platinum, wastewater inflow pipe 8 through which wastewater to be treated and treated water for discharging the treated water It consists of an outlet 9. The electrode plates 6 of the first compartment and the second compartment each have three pairs of pole plates arranged in a pair, and at this time, a DC power supply configured to connect the cathode and the anode alternately and separately configured outside the wastewater treatment apparatus. When a constant voltage and a current supplied from (10) are applied to a direct current, hydroxide ions are generated at the anode to generate a large amount of aluminum hydroxide, while fine hydrogen gas is generated at the cathode to completely float the solids.
    The electrode reaction at this time is as follows.
    Cathode: 2e - + 2H 2 O → H 2 (g) + 2OH -
    Anode: 2H 2 O → O 2 ( g) + 4H + + 4e -
    That is, two electrons from the cathode react with two water molecules, one molecule of hydrogen is floated, and two hydroxide ions are generated to react with solids that remain or remain in the solution. At the anode, oxygen gas and hydrogen are released from the water molecules. Ions are produced, and the generated hydrogen ions react with the solids from the solution.
    On the other hand, the number of molecules of the material precipitated by the electrode reaction depends on the number of electrons involved in the reaction, the electrons move from the cathode to the surrounding ions or molecules, and the current flows into the liquid by the movement of the ions dissolved in water. Therefore, the most important condition for floating the emulsified floating material is the question of whether sufficient bubbles are generated in the solution and how uniformly the bubbles are distributed around the electrode plate. Insufficient bubbles, which are usually generated in the electrode plate, having a size of about 12-30 m, cause only a portion of the solids to rise, and thus insufficient waste water treatment cannot be performed. Also, if a large amount of bubbles are generated in the electrode plate, the solids cannot be formed locally. The efficiency of the flotation separator is rather reduced. Meanwhile, in the conventional wastewater treatment apparatus or method using an electrochemical oxidation / reduction reaction, since the amount of hydroxide ions generated at the cathode is relatively larger than the amount of hydrogen gas generated at the anode, the distribution of bubbles is not uniform. As a result, a scale is formed on the positive electrode plate, thereby reducing processing efficiency.
    Therefore, in the case of the present application, an electrolytic cell (electrolytic cell) that performs electrolysis is provided with an aluminum electrode plate representing the positive electrode and an aluminum electrode plate representing the negative electrode in a direction perpendicular to the main body 1 at intervals of 4 cm or less, preferably with a strong electrolyte of the reactant. Wide electrode plates are installed to create a large amount of bubbles without chemicals. At this time, the DC voltage constantly supplied from the outside is 10 to 40 kV, and the current is 20 A. The rate at which bubbles rise and react with solids is proportional to the electrode plate area, so it is advantageous to increase the electrode plate area itself or to use a porous electrode plate. The electrode plate connection method of the electrolytic cell uses a bipolar electrode. One side of the same electrode plate has a role of the negative electrode, the other side of the positive electrode. This is because the bipolar electrode has a large voltage and a small current in comparison with the monopolar electrode, so that ohmic loss is small and overcomes the above-mentioned nonuniformity of bubble generation in the wastewater treatment using a conventional electrochemical wastewater treatment method. For sake. In addition, as shown in FIG. 2, the power supply and the positive pole alternate method supply a constant voltage and current using a DC power supply 10 and connect the terminals 11 and the terminals to alternately change the pole plates. By operating in the photon counter mode to configure the electrode conversion system (14) connecting the personal computer 12 and the photon counter (Photon counter, 13) and the like automatically processing. Therefore, as the wastewater flow in each compartment of the compartment or the discharged water to be cleaned through a constant voltage and current, fine bubbles of hydrogen ions and hydroxide ions are generated as described in the above formula and released into the solution, and the sludge floc at atmospheric pressure is released. Suspended matter, oil droplets, etc. adhere to the microbubbles and float as flocks of floc particles. When the suspended solids mixture rises to the surface, it is removed by the skimmer 5 to treat the primary wastewater in the first compartment 2. The work is done. At this time, the industrial waste liquid to be purified or the like is automatically introduced from the wastewater inlet 8 installed above the main body 1 of the apparatus, and the wastewater treated clean liquid is discharged from the treated water outlet 9 under the flotation separator. The second compartment 3 for the secondary wastewater treatment is separated from the first compartment 2, and a porous membrane 4 is installed between the two compartments as shown in FIG. 1. The porous membrane 4 is a semi-permeable membrane, ceramic, porous plastic material, and is selectively mounted by the size of the particles to be filtered. On the other hand, the wastewater which is first purified in the first compartment (2), permeated into the porous membrane (4), and introduced into the second compartment (3) is again administered with a known COD agent at room temperature and normal pressure. Electrolytic flotation is completed by generating a large amount of hydrogen ions and hydroxide ions in the second compartment 3 using an electrode plate 7 or an electrode plate 7 of platinum plated with platinum. At this time, the porous carbon electrode in the second compartment 3 is treated like the granular electrode, and the electrode of the carbon rod composed of activated carbon having a large contact resistance also increases the effective electrode surface area and controls the reaction type and speed of wastewater treatment as potential and current. can do. Table 1 shows a comprehensive summary of the COD, BOD, and SS removal rates by repeating the same wastewater treatment operation for various industrial wastewaters according to the apparatus and method described above.
    As a result of treating 1000 ml of various anaerobic industrial waste liquids with 2 ml of 1 mole of COD Industrial waste liquidEarlyAverage removal rate COD (%) BOD (%) SS (%) COD (mg / L) BOD (mg / L SS (mg / L) Leather Factory Plating Factory Printing Factory Rubber, Plastic23,000 15,650 99571,000 32,080 54043,500 19,440 1,31518,375 7,590 56397 34 7293 40 8598 29 8695 31 81
    As shown in Table 1, it can be seen that the COD removal rate in the second compartment represents an average efficiency of 96%.
    As described above, the wastewater treatment apparatus and method using the electrolytic decomposition method of the present invention overcomes the nonuniformity of bubble generation, and automatically removes the scale that precipitates and flocculates on the electrode, thereby increasing the current efficiency as well as decomposition precipitation. By using the physicochemical properties of the material, the wastewater can be treated in a large amount in a short time, which can greatly contribute to environmental protection.
    权利要求:
    Claims (6)
    [1" claim-type="Currently amended] A wastewater treatment apparatus using an electrolytic decomposition method, comprising: a body (1) including a wastewater inlet pipe (8) for introducing wastewater and a treated water outlet (9) for discharging treated water while forming a space therein; The porous membrane 4 which divides the inside of the main body 1 into the 1st compartment 2 and the 2nd compartment 3, and perpendicular | vertical to the said 1st compartment 2 and the 2nd compartment 3 for bubble generation | occurrence | production It consists of a first electrode plate 6 and a second electrode plate (7) installed in the skimmer (5) for automatically removing the suspended solids in the first compartment, the first electrode plate (6) and Alternatingly converting the positive electrode and the negative electrode of the DC power supply 10 for supplying a constant voltage and current to the second electrode plate 7 and the first electrode plate 6 and the second electrode plate 7 The timer 11 and a terminal are connected to the DC power supply 10 for the key, and the personal computer 12 and the photon counter 13 are connected to the electrode converting means. Wastewater treatment apparatus comprising a connected electrode conversion system (14).
    [2" claim-type="Currently amended] The wastewater treatment apparatus according to claim 1, wherein the first electrode plate (6) comprises a bipolar electrode composed of aluminum or platinum electrode plate.
    [3" claim-type="Currently amended] The wastewater treatment apparatus according to claim 1, wherein the second electrode plate (7) comprises a bipolar electrode composed of an electrode plate of activated carbon or titanium plated with platinum.
    [4" claim-type="Currently amended] The wastewater treatment apparatus according to claim 1, wherein the porous membrane (4) is made of any one of a semipermeable membrane, ceramic or a plastic material which is porous.
    [5" claim-type="Currently amended] In a wastewater treatment method using an electrolytic decomposition method, a body 1 including a wastewater inlet pipe 8 and a treated water outlet 9, and the interior of the body 1 are provided with a first compartment 2 and a second compartment. Porous membrane (4) divided by (3), the first electrode plate 6 and the second electrode plate (7), the first electrode plate installed perpendicular to the first compartment (2) and the second compartment (3) It consists of a skimmer (5) for automatically removing the floating solids in the compartment, by applying a constant voltage to the first electrode plate 6 and the second electrode plate (7) installed inside the main body (1) While the bubbles are rising, minute and non-uniform material to be treated is attached to the bubbles to cause electrolytic injury, and at the same time, the poles of the electrode plate are alternately converted into the positive electrode and the negative electrode using the electrode conversion means. Waste water treatment method characterized in that configured to be.
    [6" claim-type="Currently amended] The wastewater treatment method according to claim 5, wherein the COD agent is introduced into the second compartment to selectively adsorb and decompose the wastewater.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-09-15|Application filed by 최재원, 김기준
    1998-09-15|Priority to KR1019980038356A
    1998-09-15|Priority claimed from KR1019980038356A
    1998-12-05|Publication of KR19980087770A
    2002-04-22|Application granted
    2002-04-22|Publication of KR100319022B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019980038356A|KR100319022B1|1998-09-15|Wastewater Treatment System Using Electrolytic Injury Method|
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