CN210559549U - Three-dimensional electrochemical treatment device for acidic high-difficulty wastewater - Google Patents
Three-dimensional electrochemical treatment device for acidic high-difficulty wastewater Download PDFInfo
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- CN210559549U CN210559549U CN201921249956.XU CN201921249956U CN210559549U CN 210559549 U CN210559549 U CN 210559549U CN 201921249956 U CN201921249956 U CN 201921249956U CN 210559549 U CN210559549 U CN 210559549U
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Abstract
The utility model relates to a three-dimensional electrochemical treatment device for acidic high-difficulty wastewater, belonging to the technical field of sewage treatment devices. The bottom of the lower end in the reaction tank is provided with an upper partition plate and a lower partition plate at intervals; an electrode plate is arranged on the inner wall of the reaction tank above the upper partition plate, insulating net-shaped partition plates are arranged on the inner surfaces of the electrode plates, and particle electrodes are arranged in the reaction tank between the insulating net-shaped partition plates; a water outlet is arranged on the reaction tank above the electrode plate, and a water outlet pipe is arranged on the water outlet. The particle electrode adopted by the device can adapt to wastewater with a larger pH value range, and has a good treatment effect on acidic wastewater; all conditions in the reaction zone can be known in time through the observation hole on the sealing plate. Aiming at the acidic high-difficulty waste water, the utility model discloses the device effectively combines two kinds of advanced oxidation methods of interior electrolysis and three-dimensional electrochemistry together, has further strengthened the treatment effect to the acidic high-difficulty waste water.
Description
Technical Field
The utility model relates to a three-dimensional electrochemical treatment device for acidic high-difficulty wastewater, belonging to the technical field of sewage treatment devices.
Background
The existing method for treating high-concentration degradation-resistant wastewater usually adopts a high-efficiency and rapid three-dimensional electrochemical method. The three-dimensional electrochemical technology, as an improvement of the traditional two-dimensional electrochemical technology, still belongs to one of advanced oxidation methods, and is commonly used for pretreatment or advanced treatment of various high-difficulty wastewater. However, when the acidic high-difficulty wastewater occupies a large proportion of the wastewater, the three-dimensional electrochemical device cannot directly treat the wastewater, and the subsequent effective treatment can be carried out only by adjusting the pH value of the wastewater. At present, the mature three-dimensional electrochemical device has two disadvantages, namely that the pH value for accepting waste water is limited and various gases are generated to pollute the air when the device operates. Firstly, the common particle electrode mainly comprises active carbon and a special filler. The special filler is specially made in a three-dimensional electrochemical manner, and the component content of the special filler is greatly different from that of the activated carbon. When the device is used, the pH value range of the high-difficulty waste water which can be accommodated is regulated to be 6-9, in the aspect of engineering treatment, the pH value of the waste water is limited to a great extent, if the device is subjected to acid waste water, the device cannot be used, otherwise, the particle electrodes in the device can be influenced, and the treatment efficiency of the device is further influenced. Secondly, the three-dimensional electrochemical device is in an open type, so that polluted gas generated in various electrochemical reactions can directly escape into the air to form new pollution. Therefore, the search for a particle electrode suitable for acidic high-difficulty wastewater and the effective prevention of the escape of the polluted gas become problems to be solved urgently.
Disclosure of Invention
The utility model aims to provide a: the method is not influenced by the pH value of the wastewater, and is particularly suitable for acidic wastewater, so that the wastewater treatment range is expanded; and can effectively improve the treatment efficiency.
The technical scheme of the utility model is that:
the utility model provides a three-dimensional electrochemical treatment device of acid height difficult waste water, includes reaction tank, plate electrode, insulating netted baffle, particle electrode, inlet tube, outlet pipe and aeration pipe, its characterized in that: the bottom of the lower end in the reaction tank is provided with an upper partition plate and a lower partition plate at intervals; a water distribution pipe is arranged in the reaction tank between the lower partition plate and the bottom of the reaction tank and is communicated with a water inlet pipe; an aeration pipe is arranged in the reaction tank between the lower partition plate and the upper partition plate and is communicated with an air source; an electrode plate is arranged on the inner wall of the reaction tank above the upper partition plate, insulating net-shaped partition plates are arranged on the inner surfaces of the electrode plates, and particle electrodes are arranged in the reaction tank between the insulating net-shaped partition plates; a water outlet is arranged on the reaction tank above the electrode plate, and a water outlet pipe is arranged on the water outlet.
One side of the reaction tank is provided with a polluted gas absorption liquid tank, the top of the reaction tank is provided with a sealing cover through a fixing bolt, the sealing cover is provided with a gas outlet and a wire hole, and the gas outlet is communicated with the polluted gas absorption liquid tank through a gas guide pipe.
The electrode plate comprises a positive electrode plate and a negative electrode plate, and the positive electrode plate and the negative electrode plate are respectively made of graphite, stainless steel, DSA and other corrosion-resistant materials.
The positive pole plate and the negative pole plate are respectively communicated with a power supply through a wire hole by a lead.
The middle part of the sealing cover is provided with an observation window.
The end of the air duct is provided with an anti-suck-back funnel.
Through holes are uniformly distributed on the upper baffle plate and the lower baffle plate respectively.
The water distribution pipes and the aeration pipes are arranged in a staggered manner.
The beneficial effects of the utility model reside in that:
the internal electrolysis filler adopted by the utility model is used as a particle electrode, is not influenced by the pH value of the wastewater, and is particularly suitable for acidic wastewater, thereby enlarging the range of wastewater treatment of a three-dimensional electrochemical device;
secondly, the insulating reticular clapboard adopted by the utility model prevents the particle electrode from directly contacting with the positive plate and the negative plate, thereby avoiding the occurrence of short circuit current phenomenon, improving the current efficiency and further improving the degradation efficiency of the wastewater;
when the utility model is operated, the utility model can be used as an internal electrolysis device alone, a three-dimensional electrochemical device alone, or a combination device of internal electrolysis and three-dimensional electrochemistry, and the combination device can greatly improve the synergistic treatment effect of the internal electrolysis and the three-dimensional electrochemistry;
when the utility model is operated, the generated polluted gas enters the polluted gas absorption liquid tank through the air duct and is absorbed by the absorption liquid, so that the phenomenon that the gas generated by reaction pollutes the air is avoided, and the generation of new pollutants is avoided;
fifth, the utility model discloses during the operation, the circumstances such as the internal water level of reaction tank are observed to the observation hole on the accessible closing plate, have both in time known all circumstances in the reaction tank and have avoided gaseous pollutant's escape.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the water distributor of the present invention;
fig. 3 is a schematic structural view of the aeration pipe of the present invention.
In the figure, 1, a reaction tank, 2, an electrode plate, 3, an insulating reticular clapboard, 4, a particle electrode, 5, a water inlet pipe, 6, a water outlet pipe, 7, an aeration pipe, 8, an upper clapboard, 9, a lower clapboard, 10, a water distribution pipe, 11, a polluted gas absorption liquid tank, 12, a sealing cover, 13, a wire hole, 14, an air guide pipe, 15, an observation window, 16 and an anti-suck-back funnel are adopted.
Detailed Description
The three-dimensional electrochemical treatment device for the acidic high-difficulty wastewater comprises a reaction tank 1, an electrode plate 2, an insulating reticular partition plate 3, a particle electrode 4, a water inlet pipe 5, a water outlet pipe 6 and an aeration pipe 7. The reaction tank 1 is in a rectangular box shape, and an upper partition plate 8 and a lower partition plate 9 are arranged at the bottom of the lower end in the reaction tank 1 at intervals; the reaction tank 1 is divided into an upper compartment, a middle compartment and a lower compartment, a water distribution pipe 10 is arranged in the reaction tank 1 between the lower partition plate 9 and the bottom of the reaction tank 1 (the lower compartment), a water inlet hole is arranged on the reaction tank 1 corresponding to the water distribution pipe 10, a water inlet pipe 5 is arranged on the water inlet hole, and the water distribution pipe 10 is communicated with the water inlet pipe 5; an aerator pipe 7 is arranged in the reaction tank 1 between the lower partition plate 9 and the upper partition plate 8 (middle partition chamber), and one end of the aerator pipe 7 passes through the reaction tank 1 and is communicated with an air source. The water distribution pipes 10 and the aeration pipes 7 are arranged in a staggered manner. Through holes are uniformly distributed on the upper baffle plate 8 and the lower baffle plate 9 respectively, so that gas and high-difficulty waste water to be treated can pass through the upper baffle plate 8 and the lower baffle plate 9 during operation.
An electrode plate 2 is arranged on the inner wall of the reaction tank 1 above the upper partition plate 8 (upper partition chamber), the electrode plate 2 comprises a positive electrode plate and a negative electrode plate, and the positive electrode plate and the negative electrode plate are respectively made of corrosion-resistant materials such as graphite, stainless steel and DSA. The inner surface of the electrode plate 2 is provided with an insulating reticular clapboard 3, the electrode plate 2 and the insulating reticular clapboard 3 have the same size, and a particle electrode 4 is arranged in the reaction tank 1 between the insulating reticular clapboards 3. The particle electrode 4 is an internal electrolysis filler, and compared with the traditional particle electrode, the internal electrolysis filler has larger geometric dimension, is more suitable for acidic high-difficulty wastewater, and contains various metal elements for promoting treatment effect besides carbon.
The mesh size of the insulating mesh-shaped partition plate 3 of the three-dimensional electrochemical treatment device for the acidic high-difficulty wastewater is smaller than that of the particle electrode 4, so that the particle electrode 4 is fully ensured not to be in direct contact with the electrode plate 2 to cause short-circuit current during working, and the generation and utilization of effective current are ensured.
A water outlet is arranged on the reaction tank 1 above the electrode plate 2, and a water outlet pipe 6 is arranged on the water outlet. One side of the reaction tank 1 is provided with a polluted gas absorption liquid tank 11, the top of the reaction tank 1 is provided with a sealing cover 12 through a fixing bolt, the sealing cover 12 is provided with an air outlet and a wire hole 13, and a positive electrode plate and a negative electrode plate of the electrode plate 2 are respectively communicated with a power supply through wires and the wire hole 13. The air outlet is communicated with a polluted gas absorption liquid tank 11 through an air duct 14, and the end of the air duct 14 is provided with an anti-suck-back funnel 16.
The middle part of the sealing cover 12 is provided with an observation window 15. So that the conditions such as water level in the reaction tank 1 can be observed through the observation window 15 during working, all conditions in the reaction tank 1 can be known in time, and the escape of the polluted gas can be avoided.
When the three-dimensional electrochemical treatment device for acidic high-difficulty wastewater works, firstly, enough volume of polluted gas absorption liquid is placed in the polluted gas absorption liquid tank 11, and the anti-suck-back funnel 16 at the tail end of the gas guide tube 14 is immersed in the polluted gas absorption liquid. The acidic high-difficulty wastewater to be treated enters the water distribution pipe 10 through the water inlet pipe 5, the aeration pipe 7 starts aeration work, at the moment, a switch of an external power supply of the electrode plate 2 is in an open state, only the water distribution system and the aeration system are in a working state, the acidic high-difficulty wastewater to be treated overflows into the upper compartment to start internal electrolysis reaction of the acidic high-difficulty wastewater, the internal electrolysis reaction needs the acidic wastewater to be treated, the treatment effect is ideal, after the acidic high-difficulty wastewater is subjected to the internal electrolysis reaction, when the pH value is greater than 6, the switch of the external power supply can be closed, and at the moment, the three-dimensional electrochemical treatment of the acidic wastewater is carried out. The internal electrolysis reaction and the three-dimensional electrochemical reaction of the acidic high-difficulty wastewater can generate the polluted gas, so that the gas guide tube 14 and the polluted gas absorption liquid are always in a working state in the whole reaction process.
The treated waste water is discharged through the water outlet pipe 6, and the polluted gas generated in the treatment process enters the polluted gas absorption liquid tank 11 through the gas guide pipe 14 to be purified and then released.
The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater effectively combines the internal electrolysis reaction and the three-dimensional electrochemical reaction by changing the particle electrode 4, so that the device can adapt to high-difficulty wastewater with a larger pH value range, and the synergistic effect of two advanced oxidation methods is enhanced.
To show the processing results of the device, the inventors performed the following test experiments:
after the acidic high-difficulty wastewater enters the treatment device, the acidic high-difficulty wastewater firstly passes through the aeration system (middle compartment) and then reaches the upper compartment reaction zone, the internal electrolysis reaction is firstly carried out, when the pH value of the acidic wastewater is greater than 6, the external power switch is closed, the wastewater starts to carry out the three-dimensional electrochemical reaction, the finally treated wastewater is discharged from the water outlet pipe 6, and the experimental results are shown in table 1:
TABLE 1
The treated acid wastewater is finally discharged to the outside and is required to follow the first-level discharge standard of the integrated wastewater discharge standard (GB 8978-1996), and the discharge standard and the device effluent index of the utility model are shown in the table 2:
TABLE 2
From table 1, it can be seen that: the pollution indexes of the acidic high-difficulty wastewater treated by the device are greatly reduced, wherein the removal rates of SS, COD and petroleum are respectively 98.53%, 91.11% and 96.38%, the change of the pH value is directly changed from acidity to the vicinity of neutrality, and the treatment effect is very ideal.
Comparing the data in table 2 shows that: the acid waste water after the device is treated by the utility model has the pollution indexes far less than the relevant discharge standards and can be directly discharged completely.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a three-dimensional electrochemical treatment device of acid height difficult waste water, includes reaction tank (1), electrode board (2), insulating netted baffle (3), particle electrode (4), inlet tube (5), outlet pipe (6) and aeration pipe (7), its characterized in that: an upper partition plate (8) and a lower partition plate (9) are arranged at the bottom of the lower end in the reaction tank (1) at intervals; a water distribution pipe (10) is arranged in the reaction tank (1) between the lower partition plate (9) and the bottom of the reaction tank (1), and the water distribution pipe (10) is communicated with the water inlet pipe (5); an aeration pipe (7) is arranged in the reaction tank (1) between the lower clapboard (9) and the upper clapboard (8), and the aeration pipe (7) is communicated with an air source; an electrode plate (2) is arranged on the inner wall of the reaction tank (1) above the upper partition plate (8), an insulating reticular partition plate (3) is arranged on the inner surface of the electrode plate (2), and a particle electrode (4) is arranged in the reaction tank (1) between the insulating reticular partition plates (3); the particle electrode (4) is an internal electrolytic filler; a water outlet is arranged on the reaction tank (1) above the electrode plate (2), and a water outlet pipe (6) is arranged on the water outlet.
2. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 1, characterized in that: one side of the reaction tank (1) is provided with a polluted gas absorption liquid tank (11), the top of the reaction tank (1) is provided with a sealing cover (12) through a fixing bolt, the sealing cover (12) is provided with a gas outlet and a wire hole (13), and the gas outlet is communicated with the polluted gas absorption liquid tank (11) through a gas guide pipe (14).
3. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 1, characterized in that: the electrode plate (2) comprises a positive electrode plate and a negative electrode plate, and the positive electrode plate and the negative electrode plate are respectively made of graphite, stainless steel, DSA and other corrosion-resistant materials.
4. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 3, characterized in that: the positive pole plate and the negative pole plate are respectively communicated with a power supply through a wire hole (13) by a lead.
5. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 2, characterized in that: an observation window (15) is arranged in the middle of the sealing cover (12).
6. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 2, characterized in that: an anti-suck-back funnel (16) is arranged on the end head of the air duct (14).
7. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 1, characterized in that: through holes are uniformly distributed on the upper baffle plate (8) and the lower baffle plate (9) respectively.
8. The three-dimensional electrochemical treatment device for acidic high-difficulty wastewater according to claim 1, characterized in that: the water distribution pipes (10) and the aeration pipes (7) are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249956.XU CN210559549U (en) | 2019-08-05 | 2019-08-05 | Three-dimensional electrochemical treatment device for acidic high-difficulty wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249956.XU CN210559549U (en) | 2019-08-05 | 2019-08-05 | Three-dimensional electrochemical treatment device for acidic high-difficulty wastewater |
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| Publication Number | Publication Date |
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| CN210559549U true CN210559549U (en) | 2020-05-19 |
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| CN201921249956.XU Active CN210559549U (en) | 2019-08-05 | 2019-08-05 | Three-dimensional electrochemical treatment device for acidic high-difficulty wastewater |
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