CN212610167U - Electrochemistry sludge pretreatment device - Google Patents
Electrochemistry sludge pretreatment device Download PDFInfo
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- CN212610167U CN212610167U CN202020792290.9U CN202020792290U CN212610167U CN 212610167 U CN212610167 U CN 212610167U CN 202020792290 U CN202020792290 U CN 202020792290U CN 212610167 U CN212610167 U CN 212610167U
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Abstract
The utility model discloses an electrochemistry sludge pretreatment device, including having a reaction tank the reaction tank on be equipped with into mud device and sludge outlet, sludge outlet's the height is higher than into mud device, is equipped with the electrode that can carry out the electrolytic dehydration to the mud that gets into in the reaction tank, the electrode pass through the electric wire and be connected with external switch power supply, the reaction tank in still be provided with the aeration equipment that can carry out the gas stirring to the mud in the reaction tank. The utility model provides an electrochemistry sludge pretreatment device, this electrochemistry sludge pretreatment device can destroy the cell structure of microorganism in the mud under low voltage low current, makes its surface adhesion water and hydration water deviate from and become the free water, greatly improves the efficiency of follow-up sludge dewatering process.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a sludge pretreatment technical field particularly, the utility model relates to an electrochemistry sludge pretreatment device.
[ background of the invention ]
Along with the acceleration of the urbanization process in China and the increasing of the attention degree on environmental protection, the sewage treatment rate in China is rapidly improved, and the total amount of sludge which is a byproduct of sewage treatment is also sharply increased.
The water content of the sludge is generally high, the solid content is low, and the sludge contains a large amount of surface adhesion water and hydration water which are not influenced by simple mechanical pressing, so that the sludge needs to be pretreated. The traditional sludge pretreatment modes comprise heating treatment, ozone treatment, ultrasonic treatment, dosing modification, combined treatment of various methods and the like. However, the traditional pretreatment method has high energy consumption and long reaction time, and the physical method has high requirements on equipment and high overall investment and operation cost.
The utility model discloses it is based on above problem produces.
[ Utility model ] content
The technical problem to be solved by the present invention is to provide an electrochemical sludge pretreatment device, which can destroy the cell structure of microorganisms in sludge under low voltage and low current, so that the surface adhesion water and hydration water can be removed to form free water, thereby greatly improving the efficiency of the subsequent sludge dewatering process; meanwhile, the influence of concentration polarization of the electrode is reduced by a technical means, and the service life of the electrode is prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an electrochemistry sludge pretreatment device, its characterized in that, including the reaction tank on be equipped with into mud device and sludge outlet, sludge outlet's highly be higher than into mud device, be equipped with in the reaction tank and carry out the electrode that the electrolysis was dehydrated to the mud that gets into, the electrode pass through the electric wire and be connected with external switch power supply, the reaction tank in still be provided with the aeration equipment that can carry out the gas stirring to the mud in the reaction tank.
The electrochemical sludge pretreatment device is characterized in that the electrode is a carbon fiber composite catalytic electrode, and a fixed cross beam capable of fixing the electrode is arranged in the reaction tank.
The electrochemical sludge pretreatment device is characterized in that the electrodes comprise a first electrode plate and a second electrode plate which are oppositely arranged.
The electrochemical sludge pretreatment device is characterized in that the sludge feeding device comprises a distributing pipe which extends into the reaction tank and is provided with a sludge feeding port, and the sludge feeding device also comprises a pipeline mixer.
The electrochemical sludge pretreatment device is characterized in that the sludge inlet is formed in the upper end of the distributing pipe.
The electrochemical sludge pretreatment device is characterized in that the aeration device comprises an air distribution pipe which extends into the reaction tank and is provided with an air outlet.
The electrochemical sludge pretreatment device is characterized in that the air outlet is arranged at the lower end of the air distribution pipe.
The electrochemical sludge pretreatment device is characterized in that the distributing pipe is positioned below the electrode, and the gas distributing pipe is positioned below the distributing pipe.
Compared with the prior art, the utility model discloses there is following advantage:
1. the utility model provides an electrochemistry sludge pretreatment device, this electrochemistry sludge pretreatment device can destroy the cell structure of microorganism in the mud under low voltage low current, makes its surface adhesion water and hydration water deviate from and become the free water, greatly improves the efficiency of follow-up sludge dewatering process.
2. The utility model discloses the electrode that uses is the carbon fiber composite catalysis electrode that composite catalyst formed on the carbon fiber polar plate, has anticorrosive, the durability is strong, the catalytic performance is strong, the electrolysis is efficient, advantage that manufacturing cost is low, can effectively improve electrolysis reaction efficiency, reduces material dwell time.
3. The utility model adopts low voltage and low current in the electrolytic process, the sludge retention time is short, the energy consumption is low, and the occupied area is small.
4. The utility model discloses a switching power supply of positive negative pole can automatic timing switch, greatly reduces the influence of concentration polarization phenomenon to electrolysis efficiency.
[ description of the drawings ]
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the present invention;
fig. 2 is a top view of the present invention;
wherein: 1. a reaction tank; 2. a mud feeding device; 21. a distributing pipe; 211. a sludge inlet; 22. a pipeline mixer; 3. a sludge outlet; 4. an electrode; 41. a first electrode plate; 42. a second electrode plate; 5. an external switching power supply; 6. an aeration device; 61. an air distribution pipe; 7. and fixing the cross beam.
[ detailed description ] embodiments
The technical features of the present invention will be described in further detail below with reference to the accompanying drawings so that those skilled in the art can understand the features.
As shown in fig. 1 and 2, an electrochemical sludge pretreatment device comprises a reaction tank 1, wherein a sludge inlet device 2 and a sludge outlet 3 are arranged on the reaction tank 1, the height of the sludge outlet 3 is higher than that of the sludge inlet device 2, so that sludge entering the reaction tank is prevented from directly flowing out of the sludge outlet, the sludge entering the reaction tank can be electrolyzed, an electrode 4 capable of performing electrolytic dehydration on the sludge entering the reaction tank 1 is arranged in the reaction tank 1, the electrode 4 is connected with an external switching power supply 5 through a wire, and the switching power supply can automatically switch and output the positive electrode and the negative electrode at regular time according to requirements; the flow direction of charged particles in the electrolytic process is changed by switching the output anode and the cathode at regular time, and the influence of concentration polarization on the electrolytic efficiency is reduced by matching with the action of aeration; the reaction tank 1 is also internally provided with an aeration device 6 which can carry out gas stirring on the sludge in the reaction tank 1. The utility model discloses an electrochemistry sludge pretreatment device can destroy the cell structure of microorganism in the mud under low voltage low current, makes its surface adhere water and hydration water deviate from and become the free water, greatly improves the efficiency of follow-up sludge dewatering process.
The utility model discloses electrochemistry sludge pretreatment device is with the switching power supply that can switch over positive negative pole at automatic timing, greatly reduces concentration polarization phenomenon to the influence of electrolysis efficiency, and adopts low-voltage low-current among the electrolysis process, and mud dwell time is short, and the energy consumption is low, and area is little, is applicable to each sewage factory and carries out sludge pretreatment.
In this embodiment, the electrode 4 is a carbon fiber composite catalytic electrode formed by a composite catalyst on a carbon fiber polar plate, and has the advantages of corrosion resistance, strong durability, strong catalytic performance, high electrolysis efficiency and low manufacturing cost, and can effectively improve the electrolysis reaction efficiency and reduce the retention time of materials; the reaction tank 1 is internally provided with a fixed beam 7 capable of fixing the electrode 4, and the electrode 4 is fixed on the fixed beam 7 so as to ensure that the electrode 4 does not swing or even contact to cause short circuit in an aeration state.
As shown in fig. 1 and fig. 2, in this embodiment, the electrode 4 includes a first electrode plate 41 and a second electrode plate 42 that are oppositely disposed, and if the first electrode plate is connected to the positive pole of the switching power supply and the second electrode plate is connected to the negative pole of the switching power supply, the first electrode plate is an anode plate and the second electrode plate is a cathode plate; in the figure, it can be seen that the external power switch of the present application has four electrode plates in total, two electrode plates are connected with the positive electrode of the power supply, two electrode plates are connected with the negative electrode of the power supply, and two adjacent electrode plates are different electrodes, so that the maximum effect of electrolysis can be exerted, and the external power switch of the present application can change the flow direction of charged particles in the electrolysis process by switching the output positive electrode and the output negative electrode at regular time, and reduce the concentration difference formed by the accumulation of charged ions near the electrode 4 by matching with the aeration effect, thereby reducing the influence of concentration polarization on the electrolysis; the flow direction of ions in the electrolytic cell is cation flow to the cathode, anion flow to the anode, and the number of electrode plates is not particularly limited.
As shown in fig. 1 and fig. 2, in the present embodiment, the mud feeding device 2 includes a distributing pipe 21 which can extend into the reaction tank 1 and has a mud feeding port 211, and the mud feeding device 2 further includes a pipeline mixer 22. The sludge and the auxiliary materials can be injected from the pipeline mixer 22 in advance, and the sludge and the auxiliary materials are mixed in advance, so that the reaction effect of the sludge entering the reaction tank is improved.
As shown in fig. 1 and 2, in the present embodiment, the sludge inlet 211 is opened at the upper end of the distributing pipe 21.
As shown in fig. 1 and fig. 2, in the present embodiment, the aeration device 6 comprises an air distribution pipe 61 which can extend into the reaction tank 1 and has an air outlet, and the air outlet is opened at the lower end of the air distribution pipe 61; the hole opening mode reduces the blockage of the sludge to the air outlet on the premise of ensuring the aeration effect.
As shown in fig. 1 and 2, in the present embodiment, the distributing pipe 21 is located below the electrode 3, and the gas distributing pipe 61 is located below the distributing pipe 21; so as to ensure that the sludge accumulation phenomenon is not generated, and the sludge coming out of the distributing pipe 21 can be fully electrolyzed.
The method for treating the sludge by the electrochemical sludge pretreatment device comprises the following steps:
A. fully mixing the sludge and the auxiliary materials in a pipeline mixer 22 to obtain a sludge mixture, and feeding the sludge mixture into the reaction tank 1 through a material distribution pipe 21; the addition of the auxiliary materials can enable the sludge to better generate oxidation-reduction reaction under the effect of an electric field;
B. the sludge mixture entering the reaction tank 1 breaks the microbial cell structure under the electrolysis action of the electrode 4, so that the hydration water which is not easy to separate is changed into free water; the essence of hydration is that water molecules enter the mineral crystal lattice in a whole manner, so that the volume of the mineral is increased; meanwhile, the aeration device 6 leads gas to be introduced into the reaction tank 1 through the gas distribution pipe 61 for gas stirring so as to lead the sludge mixture to be fully electrolyzed; the electrode 4 switches the cathode and the anode at regular time under the action of an external switching power supply 5; the flow direction of charged particles in the electrolytic process is changed by switching the output anode and the cathode at regular time, the concentration difference formed by the charged ions accumulated near the electrode 4 is reduced by matching the action of aeration, and the influence of concentration polarization on the electrolytic efficiency is reduced;
C. the free water and other solid matters generated after electrolysis are discharged through a sludge outlet 3. The water content of the sludge discharged from the sludge outlet 3 is reduced compared with the prior art, so that the efficiency of the subsequent sludge dewatering process is improved conveniently.
The process of changing the hydration water into the free water is mainly that a, the auxiliary materials combined with the sludge particles generate violent redox reaction under the action of an electric field and a carbon fiber composite catalytic electrode, and the generated energy destroys the sludge particles to change the water in the sludge particles into the free water; b. the potential difference is generated during electrolysis, so that the sludge particles and water molecules are forced to migrate, and the sludge particles are separated from the water molecules.
The embodiment described in the present invention is only right the description of the preferred embodiment of the present invention, not to limit the concept and scope of the present invention, without departing from the present invention, the technical personnel in the field are right the technical solution of the present invention makes various deformations and improvements, all should fall into the protection scope of the present invention.
Claims (8)
1. The utility model provides an electrochemistry sludge pretreatment device, characterized in that, including reaction tank (1) on be equipped with into mud device (2) and mud export (3), the height that mud export (3) is higher than into mud device (2), be equipped with in reaction tank (1) and carry out electrolysis dehydration's electrode (4) to the mud that gets into, electrode (4) be connected with external switch power supply (5) through the electric wire, reaction tank (1) in still be provided with aeration equipment (6) that can move the gas stirring to the mud in reaction tank (1).
2. The electrochemical sludge pretreatment device according to claim 1, wherein the electrode (4) is a carbon fiber composite catalytic electrode, and a fixed cross beam (7) capable of fixing the electrode (4) is arranged in the reaction tank (1).
3. An electrochemical sludge pretreatment device in accordance with claim 2, wherein said electrode (4) comprises a first electrode plate (41) and a second electrode plate (42) disposed opposite to each other.
4. An electrochemical sludge pretreatment device according to claim 1, characterized in that said sludge feeding device (2) comprises a distribution pipe (21) extending into the reaction tank (1) and having a sludge feeding port (211), and said sludge feeding device (2) further comprises a pipeline mixer (22).
5. An electrochemical sludge pretreatment device according to claim 4, characterized in that the sludge inlet (211) is opened at the upper end of the distributing pipe (21).
6. An electrochemical sludge pretreatment apparatus in accordance with claim 4, wherein said aeration device (6) comprises a gas distribution pipe (61) extending into the reaction tank (1) and having a gas outlet.
7. An electrochemical sludge pretreatment device according to claim 6, characterized in that the air outlet is arranged at the lower end of the air distribution pipe (61).
8. The electrochemical sludge pretreatment device according to claim 7, wherein the distribution pipe (21) is located below the electrode (4), and the gas distribution pipe (61) is located below the distribution pipe (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020792290.9U CN212610167U (en) | 2020-05-13 | 2020-05-13 | Electrochemistry sludge pretreatment device |
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| CN202020792290.9U CN212610167U (en) | 2020-05-13 | 2020-05-13 | Electrochemistry sludge pretreatment device |
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| CN212610167U true CN212610167U (en) | 2021-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499130A (en) * | 2020-05-13 | 2020-08-07 | 中山市环保产业有限公司 | Electrochemical sludge pretreatment device and sludge treatment method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499130A (en) * | 2020-05-13 | 2020-08-07 | 中山市环保产业有限公司 | Electrochemical sludge pretreatment device and sludge treatment method thereof |
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