An electrocoagulation device for reducing sludge adhesion and a waste liquid treatment system

Abstract

The utility model provides an electric flocculation device and a waste liquid treatment system for reducing sludge adhesion, including a module frame, a plate mounting assembly, an aeration and stirring assembly, and a phase inversion device. Anode plates and cathode plates are alternately arranged in the module frame through the plate mounting assembly. The aeration and stirring assembly is arranged in the module frame, and is used to transport gas into the module frame for turbulent stirring; the phase inversion device is electrically connected to the anode plate and the cathode plate, and is used for periodic inversion. The utility model is provided with an aeration and stirring assembly, and gas is introduced into the aeration and stirring assembly. The gas forms fluid turbulence in the waste liquid, which can disturb the sludge on the anode plate and the cathode plate, and reduce the sludge adhesion on the plate; a phase inversion device is provided, and the polarity of the anode plate and the cathode plate is periodically changed to avoid excessive accumulation of sludge on the same plate, and to avoid short circuit between the anode plate and the cathode plate.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste liquid and sewage treatment, in particular to an electric flocculation device for reducing sludge adhesion and a waste liquid treatment system. Background Art

[0002] Compared with the traditional coagulation process, the electro-flocculation process requires less dosage and can oxidize some organic matter. Its removal effect is far better than the traditional coagulation process. There are more and more applications and research on the electro-flocculation process in China. For example, the coating waste liquid of a steel plant has high concentrations of salt and organic matter. The waste liquid treatment process adopts a zero-emission process, and the electro-flocculation device is used as a pre-treatment device for the evaporation device. The electro-flocculation device has a good flocculation effect, can transform organic matter in the waste liquid, and can greatly reduce the sludge adhesion of the evaporation device. However, the electro-flocculation device has a serious phenomenon of plate sludge adhesion during operation, resulting in two adverse consequences:

[0003] 1) The wastewater mass transfer effect is poor and the electrocoagulation treatment is not ideal;

[0004] 2) If the sludge is too thick, it may cause the cathode plate and the anode plate to short-circuit, burn the power module, reduce the stability of the electrocoagulation operation and increase the operation and maintenance costs.

[0005] Therefore, it is necessary to design an electrocoagulation device that can reduce sludge adhesion, so as to reduce the serious sludge adhesion on the anode plate and cathode plate of the electrocoagulation device during operation. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide an electric flocculation device and a waste liquid treatment system for reducing sludge adhesion, which is used to solve the problem of sludge adhesion to the anode plate and the cathode plate during the operation of the electric flocculation device in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides an electric flocculation device for reducing sludge adhesion, including a module frame, a pole plate mounting assembly, an aeration and stirring assembly, and a phase inversion device. Anode plates and cathode plates are alternately arranged in the module frame through the pole plate mounting assembly. The aeration and stirring assembly is arranged in the module frame and is used to transport gas into the module frame for turbulent stirring; the phase inversion device is electrically connected to the anode plates and the cathode plates and is used for periodic inversion.

[0008] Preferably, the pole plate mounting assembly includes a plurality of pole plate positioning plates and a plurality of pole plate supporting plates, the pole plate positioning plates are arranged on the side end faces of the module frame, and a plurality of pole plate positioning grooves are formed on the pole plate positioning plates, and the side faces of the anode plate and the cathode plate are clamped in the pole plate positioning grooves; the pole plate supporting plates are arranged on the bottom end face of the module frame, and a plurality of pole plate supporting grooves are formed on the pole plate supporting plates, and the bottom faces of the anode plate and the cathode plate are clamped in the pole plate supporting grooves.

[0009] Preferably, the aeration and stirring assembly includes a plurality of stirring air pipes, a transmission air pipe, a KT relay device, and an air supply device. The plurality of stirring air pipes are arranged on the bottom end surface of the module frame, and the air inlet ends of the plurality of stirring air pipes are connected to the transmission air pipe. The air supply device is connected to the air inlet end of the stirring air pipe through the transmission air pipe; the KT relay device is used to set the time to control the periodic delivery of the gas.

[0010] Preferably, a solenoid valve is provided on the transmission air pipe, and the KT relay device is connected to the solenoid valve to control the on and off of the transmission air pipe; a running time timing button and a stop time timing button are provided on the KT relay device, and the running time timing button and the stop time timing button are used to set the operating cycle of the KT relay device.

[0011] Preferably, at least one row of air holes is provided on the stirring air pipe; a quick-connect joint is provided at the air inlet end of the stirring air pipe, and the transmission air pipe is connected to the stirring air pipe via the quick-connect joint.

[0012] Preferably, the stirring air pipe is provided with two rows of air holes, the two rows of air holes are symmetrically arranged along the diameter of the stirring air pipe, and the angle between the hole centers of the two rows of air holes and the symmetrical diameter of the stirring air pipe is 45°.

[0013] Preferably, the phase inversion device includes a phase inversion component, a power module, an anode line, and a cathode line. The phase inversion component is electrically connected to the power module, a plurality of anode plates are connected in parallel through the anode line, and one end of the anode line away from the anode plate is electrically connected to the phase inversion component; a plurality of cathode plates are connected in parallel through the cathode line, and one end of the cathode line away from the cathode plate is electrically connected to the phase inversion component.

[0014] Preferably, the phase inversion component includes a timer, a positive state timing button, a reverse state timing button, a positive input terminal, a negative input terminal, and two output terminals, and the timer is respectively connected to the positive state timing button and the reverse state timing button; the positive pole of the power module is electrically connected to the positive input terminal, the negative pole of the power module is electrically connected to the negative input terminal, and the two output terminals are respectively electrically connected to the anode line and the cathode line.

[0015] Preferably, the phase inversion assembly further comprises a plurality of transmission plates, wherein the transmission plates are arranged on the anode plate and the cathode plate, the anode plate is electrically connected to the anode line via the transmission plates, and the cathode plate is electrically connected to the cathode line via the transmission plates.

[0016] In order to achieve the above purpose or other purposes, the utility model also discloses a waste liquid treatment system, including the above-mentioned electric flocculation device for reducing sludge adhesion.

[0017] As described above, the electric flocculation device and waste liquid treatment system for reducing sludge adhesion of the utility model have the following beneficial effects:

[0018] 1. The utility model is provided with an aeration stirring assembly, into which gas is introduced, and the gas forms fluid turbulence in the waste liquid, which can disturb the sludge on the anode plate and the cathode plate, and reduce the sludge adhesion on the plate; a phase reversal device is provided, and the polarity of the anode plate and the cathode plate is periodically changed to avoid excessive accumulation of sludge on the same plate, and to avoid short circuit between the anode plate and the cathode plate. The utility model can reduce the labor intensity of cleaning the plate, reduce the number of times the power module is replaced, and effectively improve the treatment effect of the electric flocculation device.

[0019] 2. The utility model is provided with an air supply device, which can input compressed air into the transmission air pipe. With the input of compressed air, organic matter can be directly or indirectly oxidized under the catalytic action of electricity, thereby improving the electrocatalytic oxidation capacity.

[0020] 3. The utility model improves the application scope of waste liquid treatment and has good advantages in the treatment of high-salt and high-organic waste liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a plan view of the electric flocculation device for reducing sludge adhesion of the utility model;

[0022] Figure 2 This is a front view of the electric flocculation device for reducing sludge adhesion of the utility model;

[0023] Figure 3 It is a plan view of the stirring air pipe of the electric flocculation device for reducing sludge adhesion of the utility model;

[0024] Figure 4 It is a side cross-sectional view of the stirring air pipe of the electric flocculation device for reducing sludge adhesion of the utility model;

[0025] Figure 5 It is a structural diagram of a phase reversal component of an electric flocculation device for reducing sludge adhesion according to the utility model.

[0026] Description of reference numerals:

[0027] 1. Cathode wire; 2. Anode wire; 3. Module frame; 4. Plate positioning plate; 5. Plate support plate; 6. Anode plate; 7. Cathode plate; 8. Lifting ear; 9. Power module; 10. Stirring air pipe; 1001. Quick connector; 1002. Air vent; 11. Transmission air pipe; 12. KT relay device; 1201. Running time timing button; 1202. Stop time timing button; 13. Phase inversion component; 1301. Positive state timing button; 1302. Inverted state timing button; 1303. Negative input terminal; 1304. Positive input terminal; 1305. Output terminal; 14. Transmission plate. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0030] The utility model provides an electric flocculation device for reducing sludge adhesion. For the convenience of description, the following definition is given. Figure 1 In the diagram, the left and right directions of the paper are the left direction and the right direction, the top and the bottom directions of the paper are the rear direction and the front direction, and the front and the back of the paper are the top direction and the bottom direction.

[0031] like Figure 1-Figure 5 As shown, the utility model provides an electric flocculation device for reducing sludge adhesion, including a module frame 3, a pole plate mounting assembly, an aeration stirring assembly, and a phase inversion device. Anode plates 6 and cathode plates 7 are alternately arranged in the module frame 3 through the pole plate mounting assembly. The aeration stirring assembly is arranged in the module frame 3 for conveying gas into the module frame 3 for turbulent stirring; the phase inversion device is electrically connected to the anode plates 6 and the cathode plates 7 for periodic inversion.

[0032] The utility model relates to an electric flocculation device for reducing sludge adhesion, which is provided with an aeration stirring component for conveying gas into a module frame 3. The gas forms fluid turbulence at the anode plate 6 and the cathode plate 7, disturbs the sludge adhered to the anode plate 6 and the cathode plate 7, and avoids the sludge from adhering to the anode plate 6 and the cathode plate 7. A phase inversion device is provided, which periodically changes the polarity of the anode plate 6 and the cathode plate 7, and avoids the sludge from accumulating on one plate, and avoids the sludge from accumulating too thickly.

[0033] Preferably, Figure 1 , Figure 2 As shown, the pole plate mounting assembly includes a plurality of pole plate positioning plates 4 and a plurality of pole plate supporting plates 5. The pole plate positioning plates 4 are fastened to the front end face and the rear end face of the module frame 3 by means of bolt and nut assemblies, and a plurality of pole plate positioning grooves are provided on the pole plate positioning plates 4, and the front side faces and the rear side faces of the anode plate 6 and the cathode plate 7 are both clamped in the pole plate positioning grooves; the pole plate supporting plates 5 are fastened to the bottom end face of the module frame 3 by means of nut and bolt assemblies, and a plurality of pole plate supporting grooves are provided on the top end face of the pole plate supporting plates 5, and the bottom faces of the anode plate 6 and the cathode plate 7 are clamped in the pole plate supporting grooves.

[0034] Further, such as Figure 1 , Figure 2 As shown, in this embodiment, the module frame 3 is rectangular, and the module frame 3 includes a top frame, a bottom frame, and a plurality of reinforcing connecting rods. The top frame is composed of four top connecting rods welded vertically to each other, and the bottom frame is composed of four bottom connecting rods welded vertically to each other. The top frame and the bottom frame are welded and connected by a plurality of reinforcing connecting rods. There are four pole plate mounting plates, which are arranged in groups of two, respectively on the front and rear end faces of the module frame 3, and the two pole plate mounting plates in the same group are installed at different heights; the bolts and nuts on the pole plate positioning plate 4 penetrate the reinforcing connecting rods on the front and rear end faces of the module frame 3 in the front-to-back direction. There are two pole plate support plates 5, which are arranged on the bottom end face of the module frame 3 in the front-to-back direction, and the bolts and nuts on the pole plate support plate 5 penetrate the bottom end face of the module frame 3 in the up-down direction. The pole plate positioning groove is used to fix the position of the anode plate 6 and the cathode plate 7, and the pole plate support groove is used to support the anode plate 6 and the cathode plate 7.

[0035] Preferably, Figure 1 , Figure 2 As shown, a plurality of lifting ears 8 are welded on the top surface of the module frame 3, and the lifting ears 8 are used to lift the module frame 3 to facilitate installation and maintenance.

[0036] Preferably, Figure 1 , Figure 3 , Figure 4As shown, the aeration and stirring assembly includes a plurality of stirring air pipes 10, a transmission air pipe 11, a KT relay device 12, and an air supply device. The plurality of stirring air pipes 10 are arranged on the bottom end surface of the module frame 3, and the air inlet ends of the plurality of stirring air pipes 10 are connected to the transmission air pipe 11, and the air supply device is connected to the air inlet end of the stirring air pipe 10 through the transmission air pipe 11; the KT relay device 12 is used to set the time to control the periodic delivery of the gas. In this embodiment, the stirring air pipe 10 extends in the left-right direction, and the left and right ends of the stirring air pipe 10 are fastened to the bottom end surface of the module frame 3 by a pipe clamp. The plurality of stirring air pipes 10 are arranged on the bottom end surface of the module frame 3 at a fixed interval in the front-back direction. The number of stirring air pipes 10 is 4.

[0037] Preferably, a solenoid valve is provided on the transmission air pipe 11, and the KT relay device 12 is connected to the solenoid valve to control the on and off of the transmission air pipe 11; the KT relay device 12 is provided with a running time timing button 1201 and a stop time timing button 1202, and the running time timing button 1201 and the stop time timing button 1202 are used to set the operation cycle of the KT relay device 12. In this embodiment, the operator sets the power supply time of the KT relay device 12 through the running time timing button 1201. When the KT relay device 12 supplies power to the solenoid valve, the solenoid valve opens, the transmission air pipe 11 is connected, and the stirring air pipe 10 is ventilated. The operator sets the power-off time of the KT relay device 12 through the stop time timing button 1202. When the KT relay device 12 is powered off, the solenoid valve is closed, the transmission air pipe 11 is closed, and the stirring air pipe 10 is not ventilated. In this way, the operator can realize the periodic gas supply in the stirring gas pipe 10 and the length of the gas supply time.

[0038] Preferably, Figure 3 , Figure 4 As shown, two rows of air holes 1002 are provided on the stirring air pipe 10, and the two rows of air holes 1002 are symmetrically arranged along the diameter of the stirring air pipe 10, and the angle between the hole centers of the two rows of air holes 1002 and the diameter of the stirring air pipe 10 is 45° upward. In this embodiment, the angle between the two rows of air holes 1002 is 90°, which helps to form fluid turbulence in the waste liquid after the gas flows out from the air holes 1002, and helps to disturb the anode plate 6 and the cathode plate 7 to avoid sludge adhesion. The aperture of the air hole 1002 is 1mm, and the gas generates dense small bubbles through the air hole 1002. In other embodiments, at least one row of air holes 1002 is provided on the stirring air pipe 10, as long as it can ensure that fluid turbulence is generated near the anode plate 6 and the cathode plate 7.

[0039] Preferably, Figure 1 , Figure 3As shown, the air inlet end of the stirring air pipe 10 is provided with a quick connector 1001, and the transmission air pipe 11 is connected to the stirring air pipe 10 through the quick connector 1001. In this embodiment, the end of the stirring air pipe 10 away from the air inlet end is closed, and the air inlet ends of several stirring air pipes 10 are connected in parallel with each other. The operator can install an air pipe valve at the air inlet end of each stirring air pipe 10. When the air vent 1002 on a stirring air pipe 10 is blocked by sludge, the air pipe valves on other stirring air pipes 10 can be closed, thereby increasing the gas flow on the stirring air pipe 10 and flushing the blocked air vent 1002. In other embodiments, several stirring air pipes 10 can also be connected in series.

[0040] Preferably, Figure 1 , Figure 2 As shown, the phase inversion device includes a phase inversion component 13, a power module 9, an anode line 2, and a cathode line 1. The phase inversion component 13 is electrically connected to the power module 9. Several anode plates 6 are connected in parallel through the anode line 2, and one end of the anode line 2 away from the anode plate 6 is electrically connected to the phase inversion component 13; several cathode plates 7 are connected in parallel through the cathode line 1, and one end of the cathode line 1 away from the cathode plate 7 is electrically connected to the phase inversion component 13.

[0041] Preferably, Figure 1 , Figure 2 , Figure 5 As shown, the phase inversion component 13 includes a timer (the timer is not shown), a positive state timing button 1301, a reverse state timing button 1302, a positive input terminal 1304, a negative input terminal 1303, and two output terminals 1305. The timer is connected to the positive state timing button 1301 and the reverse state timing button 1302 respectively; the positive pole of the power module 9 is electrically connected to the positive input terminal 1304, the negative pole of the power module 9 is electrically connected to the negative input terminal 1303, the left output terminal is electrically connected to the cathode line 1, and the right output terminal is electrically connected to the anode line 2. In this embodiment, a contactor is also provided inside the phase inversion component 13, and the positive output terminal 1305, the negative input terminal 1303, and the two output terminals 1305 are all connected to the contactor. The timer sends a reverse signal to the contactor, and the contactor receives the reverse signal to achieve a change in polarity.

[0042] The left output end is electrically connected to the cathode line 1, and the left output end provides electrons to the cathode plate 7 through the cathode line 1, and the state in which the anode plate 6 loses electrons through the anode line 2 is set to the positive connection state; conversely, the right output end provides electrons to the anode plate 6 through the anode line 2, and the state in which the cathode plate 7 loses electrons through the cathode line 1 is set to the reverse connection state (at this time, the anode plate 6 will become the cathode plate 7, and the cathode plate 7 will become the anode plate 6). The operator sets the setting time of the positive state through the positive state timing button 1301, sets the setting time of the reverse state through the reverse state timing button 1302, and changes it periodically through the timer to avoid continuous accumulation of sludge on a certain plate and the phenomenon of excessive accumulation. In this embodiment, the anode plate 6 and the cathode plate 7 are exactly the same, and the cathode plate 7 is electrically connected to the cathode of the output end 1305 of the phase reverse assembly 13, and the anode plate 6 is electrically connected to the anode of the output end 1305 of the phase reverse assembly 13.

[0043] Furthermore, in this embodiment, the timer in the phase inverter component 13 can be replaced by the KT relay device 12 in this application.

[0044] Preferably, in this embodiment, the power module 9 provides a stable and adjustable DC power supply for the electro-flocculation reaction. The parameters of the power module 9 are: input voltage: AC220V, output voltage: DC0-30V.

[0045] Preferably, Figure 2 As shown, the phase inverter assembly 13 further includes a plurality of transmission plates 14, which are arranged on the anode plate 6 and the cathode plate 7. The anode plate 6 is electrically connected to the anode line 2 through the transmission plate 14, and the cathode plate 7 is electrically connected to the cathode line 1 through the transmission plate 14. In this embodiment, an anode plate through hole is provided at the top end of the anode plate 6, a cathode plate through hole is provided at the top end of the cathode plate 7, and a transmission plate through hole is provided on the transmission plate 14. The transmission plate through hole is aligned with the anode plate through hole and the two are fastened and connected by bolts and nuts, so as to ensure that the transmission plate 14 is closely fitted with the anode plate 6 and the current is transmitted; the transmission plate through hole is aligned with the cathode plate through hole and the two are fastened and connected by bolts and nuts, so as to ensure that the transmission plate 14 is closely fitted with the cathode plate 7 and the current is transmitted.

[0046] Preferably, in this embodiment, the setting of the inversion time and the setting of the aeration and stirring time should be determined according to the composition of the waste liquid and the size of the aeration air volume. If the inversion time is too long, the adsorbed sludge will age on the cathode plate 7 and will not be easy to desorb; if the inversion time is short, the electro-flocculation rate of metal ions will slow down and the electro-flocculation efficiency will decrease. If the aeration time is too long, it may cause excessive foam in the waste liquid. Therefore, the key to the aeration and stirring assembly lies in the size of the air volume, the size of the bubble and the setting of the opening position. The air vent in this application is set to 1mm, and the angle between the opening position and the diameter is 45°, which is the best choice after experimental verification.

[0047] In order to achieve the above purpose or other purposes, the utility model also discloses a waste liquid treatment system, including the above-mentioned electric flocculation device for reducing sludge adhesion.

[0048] The utility model relates to an electric flocculation device for reducing sludge adhesion and a waste liquid treatment system, and the working steps are as follows:

[0049] S1: The operator shall Figure 1-Figure 5 , and the above description, assemble and connect the components;

[0050] S2: lifting the module frame 3 assembled in step S1 into a container for waste liquid through the lifting lugs 8;

[0051] S3: The operator starts the phase reversal component 13, and sets the duration of the corresponding state through the positive state timing button 1301 and the reversal state timing button 1302. When the positive state is executed, the left end output terminal provides electrons to the cathode plate 7 through the cathode line 1, and the cations in the waste liquid move to the cathode plate 7 to obtain electrons for reduction reaction, generating part of hydrogen and part of hydroxyl; the anions in the waste liquid move to the anode plate 6 to lose electrons for oxidation reaction, generating oxidation of metal ions and organic matter, and the anode plate 6 loses electrons through the anode line 2, and the circuit is closed through the right end output terminal;

[0052] When the timer detects that the positive state has been executed for the expected time, the timer sends a reversal signal to the contactor, and the contactor works to achieve the inversion of the anode and cathode. At this time, the reversal state is executed, that is, the cathode plate 7 will become the anode plate 6. The execution process is similar to the above and will not be repeated again.

[0053] S4: When the waste liquid is subjected to the electro-flocculation operation in step S3, the operator can start the KT relay device 12 and the gas supply device, and set the duration of the corresponding state through the running time timing button 1201 and the stop time timing button 1202. When the KT relay device 12 supplies power to the solenoid valve, the solenoid valve opens, the transmission air pipe 11 is connected, and the gas supply device ventilates the stirring air pipe 10 through the transmission air pipe 11. The gas forms fluid turbulence at the anode plate 6 and the cathode plate 7 through the air vent 1002, disturbing the sludge discharged from the anode plate 6 and the cathode plate 7 to avoid the adhesion of the sludge. When the running time reaches the set time, the KT relay device 12 is powered off, the solenoid valve is closed, the transmission air pipe 11 is closed, and the stirring air pipe 10 is not ventilated. When the stop time reaches the set time, the KT relay device 12 supplies power to the solenoid valve, thereby realizing the periodic gas supply in the stirring air pipe 10 and the control of the gas supply time.

[0054] S5: After the sludge is desorbed from the anode plate 6 and the cathode plate 7 in step S3 and step S4, the suspended sludge naturally settles and accumulates at the bottom of the waste liquid container, completing the electrocoagulation process. The operator regularly removes the settled sludge.

[0055] The utility model relates to an electric flocculation device for reducing sludge adhesion and a waste liquid treatment system, and the beneficial effects are as follows:

[0056] 1. The utility model is provided with a phase reversal device, which realizes periodic polarity reversal. Due to various factors such as different bias voltages, different surface currents, different waste liquid conductivity, and different organic matter contents during the operation of the electroflocculation device, the rate at which the cathode plate 7 adsorbs metal cations and polyhydroxy substances is different from the rate at which the anode plate 6 adsorbs anions to produce metal ions and organic matter. Therefore, there is a difference in the rate at which sludge adheres to the anode plate 6 and the cathode plate 7. A phase reversal device is provided to change the polarity of the plate and thus the direction of charge movement, thereby preventing sludge from continuously accumulating on the anode plate 6 or the cathode plate 7, and preventing the phenomenon of excessive accumulation that is difficult to clean.

[0057] 2. The utility model is provided with an aeration stirring assembly, which utilizes the air holes 1002 on the stirring air pipe 10 to periodically transport a large number of small bubbles of a large area to the anode plate 6 and the cathode plate 7, so that the waste liquid between the plates forms a foam contact state, and utilizes the high turbulence of the foam to separate the sludge from the plates, thereby reducing the adhesion of the sludge on the plates, reducing the labor intensity of cleaning the plates, and improving the effect of the electro-flocculation treatment.

[0058] 3. The aeration stirring assembly provided in the utility model fills the stirring air pipe 10 with compressed air, and the compressed air contains oxygen. The addition of oxygen can directly or indirectly oxidize organic matter under the catalytic action of electricity, which can effectively improve the application scope of waste liquid treatment, and is particularly suitable for high-salt and high-organic waste liquid.

[0059] 4. The utility model realizes periodic aeration during operation time and stop time by setting KT relay device 12, and desorbs sludge through fluid turbulence; sets positive time and reverse time of phase reversal component 13 to perform periodic reverse polarity, and changes the movement direction of electric charge in waste liquid to desorb sludge. During other periods, the suspended sludge naturally settles and accumulates to the bottom of the waste liquid container, completing the electric flocculation process.

[0060] In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An electrocoagulation device for reducing sludge adhesion, characterized in that: The invention comprises a module frame (3), a plate mounting assembly, an aeration and stirring assembly, and a phase inversion device. The anode plate (6) and the cathode plate (7) are alternately arranged in the module frame (3) through the plate mounting assembly. The aeration and stirring assembly is arranged in the module frame (3) and is used to transport gas into the module frame (3) for turbulent stirring. The phase inversion device is electrically connected to the anode plate (6) and the cathode plate (7) and is used for periodic inversion.

2. The electrocoagulation device for reducing sludge adhesion according to claim 1, characterized in that: The electrode plate mounting assembly comprises a plurality of electrode plate positioning plates (4) and a plurality of electrode plate supporting plates (5); the electrode plate positioning plates (4) are arranged on the side end surfaces of the module frame (3), and the electrode plate positioning plates (4) are provided with a plurality of electrode plate positioning grooves, and the side surfaces of the anode plate (6) and the cathode plate (7) are clamped in the electrode plate positioning grooves; the electrode plate supporting plates (5) are arranged on the bottom end surface of the module frame (3), and the electrode plate supporting plates (5) are provided with a plurality of electrode plate supporting grooves, and the bottom surfaces of the anode plate (6) and the cathode plate (7) are clamped in the electrode plate supporting grooves.

3. The electrocoagulation device for reducing sludge adhesion according to claim 1, characterized in that: The aeration and stirring assembly comprises a plurality of stirring air pipes (10), a transmission air pipe (11), a KT relay device (12), and an air supply device. The plurality of stirring air pipes (10) are arranged on the bottom end surface of the module frame (3), and the air inlet ends of the plurality of stirring air pipes (10) are connected to the transmission air pipe (11). The air supply device is connected to the air inlet end of the stirring air pipe (10) via the transmission air pipe (11); the KT relay device (12) is used to set a time to control the periodic delivery of gas.

4. The electrocoagulation device for reducing sludge adhesion according to claim 3 is characterized in that: The transmission air pipe (11) is provided with an electromagnetic valve, and the KT relay device (12) is connected to the electromagnetic valve and is used to control the on and off of the transmission air pipe (11); the KT relay device (12) is provided with a running time timing button (1201) and a stopping time timing button (1202), and the running time timing button (1201) and the stopping time timing button (1202) are used to set the operation cycle of the KT relay device (12).

5. The electrocoagulation device for reducing sludge adhesion according to claim 3 is characterized in that: The stirring air pipe (10) is provided with at least one row of air holes (1002); the air inlet end of the stirring air pipe (10) is provided with a quick-connect joint (1001), and the transmission air pipe (11) is connected to the stirring air pipe (10) via the quick-connect joint (1001).

6. The electrocoagulation device for reducing sludge adhesion according to claim 3, characterized in that: The stirring air pipe (10) is provided with two rows of air holes (1002), the two rows of air holes (1002) are symmetrically arranged along the diameter of the stirring air pipe (10), and the angle between the hole centers of the two rows of air holes (1002) and the symmetrical diameter of the stirring air pipe (10) is 45°.

7. The electrocoagulation device for reducing sludge adhesion according to claim 1, characterized in that: The phase inversion device comprises a phase inversion component (13), a power module (9), an anode line (2), and a cathode line (1); the phase inversion component (13) is electrically connected to the power module (9); a plurality of anode plates (6) are connected in parallel via the anode line (2); an end of the anode line (2) away from the anode plate (6) is electrically connected to the phase inversion component (13); a plurality of cathode plates (7) are connected in parallel via the cathode line (1); an end of the cathode line (1) away from the cathode plate (7) is electrically connected to the phase inversion component (13).

8. The electrocoagulation device for reducing sludge adhesion according to claim 7, characterized in that: The phase inversion component (13) comprises a timer, a positive state timing button (1301), a reverse state timing button (1302), a positive input terminal (1304), a negative input terminal (1303), and two output terminals (1305); the timer is respectively connected to the positive state timing button (1301) and the reverse state timing button (1302); the positive pole of the power module (9) is electrically connected to the positive input terminal (1304), the negative pole of the power module (9) is electrically connected to the negative input terminal (1303), and the two output terminals (1305) are respectively electrically connected to the anode line (2) and the cathode line (1).

9. The electrocoagulation device for reducing sludge adhesion according to claim 7, characterized in that: The phase inversion assembly (13) further comprises a plurality of transmission plates (14), wherein the transmission plates (14) are arranged on the anode plate (6) and the cathode plate (7), wherein the anode plate (6) is electrically connected to the anode line (2) via the transmission plates (14), and the cathode plate (7) is electrically connected to the cathode line (1) via the transmission plates (14).

10. A waste liquid treatment system, characterized in that: The invention comprises the electric flocculation device for reducing sludge adhesion as described in any one of claims 1 to 9.

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