CN210826380U - Device for preparing ferrate - Google Patents
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- CN210826380U CN210826380U CN201921389963.XU CN201921389963U CN210826380U CN 210826380 U CN210826380 U CN 210826380U CN 201921389963 U CN201921389963 U CN 201921389963U CN 210826380 U CN210826380 U CN 210826380U
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Abstract
The utility model discloses a device of preparation ferrate, include: the device comprises a tank body, a first reaction zone and a second reaction zone, wherein a diaphragm is arranged in the tank body and divides the tank body into the first reaction zone and the second reaction zone; the electrolytic basket comprises a first electrolytic basket and a second electrolytic basket, the first electrolytic basket is arranged in the first reaction area, the second electrolytic basket is arranged in the second reaction area, and the first electrolytic basket and the second electrolytic basket are hollow and filled with electrolytic materials; and a power supply, the positive electrode of which is electrically connected with one of the first electrolysis basket and the second electrolysis basket, and the negative electrode of which is electrically connected with the other one of the first electrolysis basket and the second electrolysis basket. The device can effectively prepare ferrate, effectively reduce the voltage of the tank, has small floor area and low cost, and has high removal rate when being used for removing waste water COD.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, concretely relates to device of preparation ferrate.
Background
At present, the tail end of wastewater in the non-ferrous industry is generally treated by an electrochemical treatment process, and the traditional electrochemical treatment method generally adopts an open electrolytic cell and iron plate reversing electrolysis mode, and the mode is a normal pressure type, has simple equipment and is widely adopted. However, the process equipment occupies a large area, has low electric energy efficiency and low anode utilization rate, and the electrolyzed iron is not easy to discharge and is adhered to the polar plate to be continuously oxidized, thereby losing the efficacy.
Therefore, the existing electrochemical treatment technology suitable for wastewater in the color industry needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a device for preparing ferrate, adopt the device can effectively prepare and obtain ferrate, effectively reduce the groove voltage simultaneously, device area is little and the cost is with low costs to this ferrate is used for getting rid of waste water COD process and has very high clearance.
In one aspect of the present invention, a device for producing ferrate is provided. According to the utility model discloses an embodiment, the device includes:
the device comprises a tank body, wherein at least one of sodium hydroxide and potassium hydroxide is filled in the tank body, a diaphragm is arranged in the tank body, the diaphragm divides the interior of the tank body into a first reaction zone and a second reaction zone which are distributed along the horizontal direction, a first discharge port is arranged at the bottom of the first reaction zone, and a second discharge port is arranged at the bottom of the second reaction zone;
the electrolytic basket comprises a first electrolytic basket and a second electrolytic basket, the first electrolytic basket is arranged in the first reaction area, the second electrolytic basket is arranged in the second reaction area, the first electrolytic basket and the second electrolytic basket are hollow and filled with electrolytic materials, and openings are formed in the first electrolytic basket and the second electrolytic basket;
a power source having a positive electrode electrically connected to one of the first and second electrolysis baskets and a negative electrode electrically connected to the other of the first and second electrolysis baskets.
According to the utility model discloses device for preparing ferrate is through setting up the diaphragm in the cell body, and this diaphragm divides into first reaction zone and second reaction zone in with the cell body, and first reaction zone and second reaction zone set up sodium hydroxide and/or potassium hydroxide and first electrolysis basket and second electrolysis basket respectively to first electrolysis basket and second electrolysis basket cavity just are filled with the electrolysis material, and the electrolysis material in one among first electrolysis basket and the second electrolysis basket of the positive electricity connection with the power reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the other of the first and second electrolytic baskets, which is electrically connected to the negative electrode of the power supply, reacts: 6H2O+6e-＝3H2+6OH-The total reaction is Fe +2OH-+2H2O+＝FeO4 2-+3H2Therefore, the ferrate can be effectively prepared by adopting the device, the voltage of the tank is effectively reduced, the occupied area of the device is small, the manufacturing cost is low, and the ferrate has high removal rate when being used for removing the COD in the wastewater.
In addition, the device for preparing ferrate according to the above embodiments of the present invention may have the following additional technical features:
optionally, the tank is a resin tank, a PVC tank or a concrete tank.
Optionally, the diaphragm is arranged in the tank body along the height direction of the tank body, and the first reaction zone and the second reaction zone are symmetrical with respect to the diaphragm.
Optionally, the first and second electrolysis baskets are made of stainless steel, titanium, copper or graphite.
Optionally, the electrolytic feed material comprises at least one of pure iron, carbon steel and iron carbon alloy. Therefore, ferrate can be effectively prepared.
Optionally, the power source is a reversing power source, a positive electrode of the reversing power source is periodically electrically connected with one of the first and second electrolysis baskets, and a negative electrode of the reversing power source is periodically electrically connected with the other of the first and second electrolysis baskets. Therefore, the activity of the electrolytic basket can be maintained, and the electrolytic efficiency is improved.
Optionally, the present invention provides a method of producing ferrate. According to an embodiment of the invention, the method comprises: and at least one of sodium hydroxide and potassium hydroxide is added into the tank body respectively, and the first electrolysis basket and the second electrolysis basket generate electrolysis reaction under the action of a power supply to obtain ferrate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a device for producing ferrate according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the present invention, a device for producing ferrate is provided. According to the utility model discloses an embodiment, referring to fig. 1, the device includes: a tank 100, an electrolytic basket 200, and a power source 300.
According to the embodiment of the present invention, at least one of sodium hydroxide and potassium hydroxide is filled in the tank body 100, and a diaphragm 11 is disposed in the tank body 100, the diaphragm 11 separates the interior of the tank body 100 into a first reaction area 12 and a second reaction area 13 distributed along the horizontal direction, the bottom of the first reaction area 12 is provided with a first discharge port 101, the bottom of the second reaction area 13 is provided with a second discharge port 102, i.e. the separation of the reaction products in the first reaction area 12 and the second reaction area 13 can be realized by disposing the diaphragm 11, and the skilled person can select the type of the diaphragm 11 according to the actual requirement, as long as the separation of the reaction products in the first reaction area 12 and the second reaction area 13 can be realized, for example, the diaphragm 11 can adopt asbestos, polyester fabric, nylon mesh membrane, biscuit ceramic plate, polymer anion-cation exchange membrane, etc. According to an embodiment of the present invention, referring to fig. 1, the membrane 11 is disposed in the tank body 100 along the height direction of the tank body 100, and the first reaction zone 12 and the second reaction zone 13 are symmetrical with respect to the membrane 11. The material of the tank 100 is not particularly limited as long as the insulation effect can be achieved, and may be, for example, a resin tank, a PVC tank, or a concrete tank.
According to the embodiment of the present invention, the electrolysis basket 200 includes the first electrolysis basket 21 and the second electrolysis basket 22, the first electrolysis basket 21 is provided at the first reaction zone 12, the second electrolysis basket 22 is provided at the second reaction zone 13, and the first electrolysis basket 21And the second electrolytic basket 22 is hollow inside and filled with electrolytic material, and the first electrolytic basket 21 and the second electrolytic basket 22 are provided with openings (not shown). Specifically, under the action of the connecting power supply, the electrolytic material in one of the first electrolytic basket and the second electrolytic basket electrically connected with the positive electrode of the power supply reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the other of the first and second electrolytic baskets, which is electrically connected to the negative electrode of the power supply, reacts: 6H2O+6e-＝3H2+6OH-The total reaction is Fe +2OH-+2H2O+＝FeO4 2-+3H2Thereby effectively preparing the ferrate. Specifically, the first and second electrolysis baskets 21 and 22 are hollow inside, the electrolytic material is filled in the hollow structure thereof, and the first and second electrolysis baskets 21 and 22 are both provided in the vertical direction in the tank 100.
Further, the first and second electrolytic baskets 21 and 22 are made of stainless steel, titanium, copper or graphite. In addition, the electrolytic material in the first and second electrolytic baskets 21 and 22 includes at least one of pure iron, carbon steel, and iron-carbon alloy. Therefore, the electrolytic material can provide iron element in the electrolytic basket connected with the positive pole of the power supply, and the cost is lower.
According to an embodiment of the present invention, the positive electrode 31 of the power source 300 is electrically connected to one of the first and second electrolysis baskets 21 and 22, and the negative electrode 32 of the power source 300 is electrically connected to the other of the first and second electrolysis baskets 21 and 22. Specifically, the power supply 300 is a direct current power supply with reversed positive and negative poles, the positive pole 31 of the power supply 300 is electrically connected with the first electrolysis basket 21, the negative pole 32 of the power supply 300 is electrically connected with the second electrolysis basket 22, and at this time, iron in the electrolytic material in the first electrolysis basket 21 reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the reaction takes place at the second electrolytic basket 22: 6H2O+6e-＝3H2+6OH-After 30-120 minutes, the anode 31 and the cathode 32 of the power supply 300 are switched to ensure that the anode 31 and the second electrolysis of the power supply 300Basket 22 is electrically connected and the negative electrode 32 of power supply 300 is electrically connected to the first electrolysis basket 21, at which time the iron in the electrolytic material in the second electrolysis basket 22 reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the reaction takes place at the first electrolytic basket 21: 6H2O+6e-＝3H2+6OH-Therefore, the electrolytic activity of the electrolytic basket can be maintained, and the yield of the ferrate can be improved.
According to the utility model discloses device for preparing ferrate is through setting up the diaphragm in the cell body, and this diaphragm divides into first reaction zone and second reaction zone in with the cell body, and first reaction zone and second reaction zone set up sodium hydroxide and/or potassium hydroxide and first electrolysis basket and second electrolysis basket respectively to first electrolysis basket and second electrolysis basket cavity just are filled with the electrolysis material, and the electrolysis material in one among first electrolysis basket and the second electrolysis basket of the positive electricity connection with the power reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the other of the first and second electrolytic baskets, which is electrically connected to the negative electrode of the power supply, reacts: 6H2O+6e-＝3H2+6OH-The total reaction is Fe +2OH-+2H2O+＝FeO4 2-+3H2Therefore, the ferrate can be effectively prepared by adopting the device, the voltage of the tank is effectively reduced, the occupied area of the device is small, the manufacturing cost is low, and the ferrate has high removal rate when being used for removing the COD in the wastewater.
For ease of understanding, the method of producing ferrate using the above-described device is described in detail below. According to the utility model discloses an embodiment, this method includes: and at least one of sodium hydroxide and potassium hydroxide is added into the tank body respectively, and the first electrolysis basket and the second electrolysis basket generate electrolysis reaction under the action of a power supply to obtain ferrate. Specifically, under the action of the connecting power supply, the electrolytic material in one of the first electrolytic basket and the second electrolytic basket electrically connected with the positive electrode of the power supply reacts: fe +8OH-＝FeO4 2-+4H2O+6e-And the other of the first and second electrolytic baskets, which is electrically connected to the negative electrode of the power supply, reacts: 6H2O+6e-＝3H2+6OH-The total reaction is Fe +2OH-+2H2O+＝FeO4 2-+3H2Thereby effectively preparing the ferrate. Specifically, the first and second electrolysis baskets 21 and 22 are hollow inside, the electrolytic material is filled in the hollow structure thereof, and the first and second electrolysis baskets 21 and 22 are both provided in the vertical direction in the tank 100.
Further, the current density of the electrolytic reaction is 50 to 500A/m2The temperature is 20-50 ℃. The concentration of sodium hydroxide and/or potassium hydroxide added into the tank body is 0.1-18 mol/L. The inventor finds that if the alkali concentration is too low, ferrate cannot be prepared by the reaction, and if the alkali concentration is too high, the alkali solution is already in a supersaturated state, and crystallization occurs, so that the reaction is influenced. Preferably not less than 12 mol/L. And the power supply is a reversing power supply, and the reversing period of the reversing power supply is 30-120 min. The inventor finds that if the reversing period is too short, the time of the electrolytic action is influenced, the electrolytic materials in the electrolytic basket connected with the positive electrode of the power supply are reduced more quickly, and the running efficiency of the equipment is lower; the reversal period is too long and the anode electrolytic basket may be covered with various products or other impurities, which also affects the operating efficiency. Therefore, the activity of the electrolytic basket can be maintained, and the electrolytic efficiency is improved.
It should be noted that the features and advantages described above with respect to producing ferrate apply equally to the method of producing ferrate and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
Sodium hydroxide solution or potassium hydroxide solution (with the concentration of 18mol/L) is respectively added into the tank body, the first electrolysis basket is made of stainless steel, and the electrolysis material in the first electrolysis basket is pure ironThe two electrolytic baskets are made of graphite, the electrolytic material in the second electrolytic basket is carbon steel, the positive electrode of the reversing power supply is periodically and electrically connected with one of the first electrolytic basket and the second electrolytic basket, the negative electrode of the reversing power supply is periodically and electrically connected with the other one of the first electrolytic basket and the second electrolytic basket, and the current density of the electrolytic reaction is 50A/m2Collecting sodium ferrate under an electrolytic basket as an anode at 50 ℃ and 30min of reversing period of a reversing power supply, putting the obtained sodium ferrate into the landfill leachate (the initial COD is 3000ppm), wherein the adding temperature is 50 ℃ based on 1m3The adding amount of the sodium ferrate in the landfill leachate is 5kg, and the COD value of the landfill leachate after 1 hour of reaction is 300 ppm.
Example 2
Respectively adding potassium hydroxide solution (with the concentration of 14mol/L) into the tank body, wherein the first electrolysis basket is made of titanium, the electrolytic material in the first electrolysis basket is iron-carbon alloy, the second electrolysis basket is made of copper, the electrolytic material in the second electrolysis basket is pure iron, the positive electrode of the reversing power supply is periodically and electrically connected with one of the first electrolysis basket and the second electrolysis basket, the negative electrode of the reversing power supply is periodically and electrically connected with the other one of the first electrolysis basket and the second electrolysis basket, and the current density of the electrolytic reaction is 500A/m2Collecting potassium ferrate under an electrolytic basket as an anode at 20 ℃ and a commutation period of a commutation power supply of 120min, putting the obtained potassium ferrate into the landfill leachate (initial COD is 4000ppm) at 25 ℃ based on 1m3The adding amount of the potassium ferrate in the landfill leachate is 5.5kg, and the COD value of the landfill leachate after 1.5 hours of reaction is 350 ppm.
Example 3
Sodium hydroxide solution and potassium hydroxide solution (OH) were added to the bath of the present application, respectively-Concentration is 13mol/L), the first electrolysis basket is made of graphite, the electrolytic material in the first electrolysis basket is pure iron, the second electrolysis basket is made of graphite, the electrolytic material in the second electrolysis basket is pure iron, and the positive electrode of the reversing power supply is periodically connected with the first electrolysis basketOne of the basket and the second electrolytic basket is electrically connected, the negative electrode of the reversing power supply is periodically and electrically connected with the other one of the first electrolytic basket and the second electrolytic basket, and the current density for electrolytic reaction is 200A/m2The temperature is 30 ℃, the reversing period of the reversing power supply is 60min, sodium ferrate and potassium ferrate are collected and obtained under an electrolytic basket as an anode, the obtained sodium ferrate and potassium ferrate are put into the landfill leachate (the initial COD is 5000ppm), the adding temperature is 40 ℃, based on 1m, the temperature is 1 DEG C3The total adding amount of the sodium ferrate and the potassium ferrate in the landfill leachate is 6.5kg, and the COD value of the landfill leachate after 2 hours of reaction is 200 ppm.
Example 4
Respectively adding potassium hydroxide solution (with the concentration of 15mol/L) into the cell body, wherein the first electrolysis basket is made of graphite, the electrolytic material in the first electrolysis basket is pure iron, the second electrolysis basket is made of graphite, the electrolytic material in the second electrolysis basket is pure iron, the positive electrode of the reversing power supply is periodically and electrically connected with one of the first electrolysis basket and the second electrolysis basket, the negative electrode of the reversing power supply is periodically and electrically connected with the other one of the first electrolysis basket and the second electrolysis basket, and the current density of the electrolytic reaction is 300A/m2The temperature is 35 ℃, the reversing period of the reversing power supply is 80min, potassium ferrate is collected and obtained under an electrolytic basket as an anode, the obtained potassium ferrate is put into landfill leachate (the initial COD is 7000ppm), the adding temperature is 3.5 ℃, and the adding temperature is 1m based on the total weight of the garbage leachate3The adding amount of the sodium ferrate in the landfill leachate is 7kg, and the COD value of the landfill leachate after 3 hours of reaction is 280 ppm.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (6)
1. A device for producing ferrate, comprising:
the device comprises a tank body, wherein at least one of sodium hydroxide and potassium hydroxide is filled in the tank body, a diaphragm is arranged in the tank body, the diaphragm divides the interior of the tank body into a first reaction zone and a second reaction zone which are distributed along the horizontal direction, a first discharge port is arranged at the bottom of the first reaction zone, and a second discharge port is arranged at the bottom of the second reaction zone;
the electrolytic basket comprises a first electrolytic basket and a second electrolytic basket, the first electrolytic basket is arranged in the first reaction area, the second electrolytic basket is arranged in the second reaction area, the first electrolytic basket and the second electrolytic basket are hollow and filled with electrolytic materials, and openings are formed in the first electrolytic basket and the second electrolytic basket;
a power source having a positive electrode electrically connected to one of the first and second electrolysis baskets and a negative electrode electrically connected to the other of the first and second electrolysis baskets.
2. The apparatus of claim 1, wherein the tank is a resin tank, a PVC tank, or a concrete tank.
3. The apparatus of claim 1, wherein the membrane is disposed in the tank body in a height direction of the tank body, and the first reaction zone and the second reaction zone are symmetrical with respect to the membrane.
4. The apparatus of claim 1, wherein the first and second electrolysis baskets are made of stainless steel, titanium, copper or graphite.
5. The apparatus of claim 1 or 4, wherein the electrolytic material comprises at least one of pure iron, carbon steel and iron carbon alloy.
6. The apparatus of claim 1, wherein the power source is a reversing power source having a positive pole periodically electrically connected to one of the first and second electrolysis baskets and a negative pole periodically electrically connected to the other of the first and second electrolysis baskets.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110438518A (en) * | 2019-08-23 | 2019-11-12 | 中国恩菲工程技术有限公司 | The device and method for preparing ferrate |
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| CN110438518A (en) * | 2019-08-23 | 2019-11-12 | 中国恩菲工程技术有限公司 | The device and method for preparing ferrate |
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