CN219907151U - Backwash type electric flocculation device - Google Patents
Backwash type electric flocculation device Download PDFInfo
- Publication number
- CN219907151U CN219907151U CN202321252796.0U CN202321252796U CN219907151U CN 219907151 U CN219907151 U CN 219907151U CN 202321252796 U CN202321252796 U CN 202321252796U CN 219907151 U CN219907151 U CN 219907151U
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- electric flocculation
- slag
- clean water
- water tank
- zone
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- 238000005189 flocculation Methods 0.000 title claims abstract description 45
- 230000016615 flocculation Effects 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000002893 slag Substances 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 238000010992 reflux Methods 0.000 claims abstract description 12
- 238000009825 accumulation Methods 0.000 claims abstract description 10
- 238000011001 backwashing Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims description 22
- 238000007790 scraping Methods 0.000 claims description 19
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 238000006479 redox reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- -1 fluorine ions Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model discloses a backwashing type electric flocculation device, which comprises an electric flocculation reaction area, a floatation sedimentation area and a clean water tank, wherein sewage flows into the electric flocculation reaction area from a water inlet pipe for oxidation-reduction reaction, then flows into the floatation sedimentation area for suspended matters and colloid separation, scums are scraped into a slag accumulation groove, clean water flows into the clean water tank, a reflux system is arranged between the clean water tank and the electric flocculation reaction area, the reflux system comprises a reflux pump for pumping the water in the clean water tank into the upper layer or the lower layer of the electric flocculation reaction area through a flushing pipe, the electrode plate is backwashed, and a liquid level regulating device is further arranged in the clean water tank. The utility model solves the problems that the electrode plate cannot be washed and hardened in the process of treating sewage by electroflocculation in the prior art, and the liquid level cannot be adjusted and the thickness of the scraped slag cannot be controlled.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a backwashing type electric flocculation device.
Background
The electric flocculation process can effectively remove colloid and suspended pollutants in water, has good removal effect on heavy metal ions, fluorine ions and partial colored matters, and can be widely applied to various wastewater treatment and water supply treatment projects. Compared with the traditional chemical coagulation, the electric flocculation process has the advantages of good separation effect, low water content of sludge, small occupied area, easy realization of automatic control and the like, and has wide application prospect.
The chinese patent application No. 202210227158.7 discloses an electric flocculation apparatus which realizes separation of an electrolyte and wastewater to be treated by using separate electric flocculation reaction units and wastewater treatment units, but the apparatus does not consider the situation that electrode plates are hardened and electrolytic efficiency is lowered when the apparatus is used for a long time.
The Chinese patent application No. 201720676533.0 discloses an electric flocculation solidification liquid separation device, and the slag scraping machine is arranged on a slag scraping pool of the device for scraping slag, but the influence of the height of the liquid level on slag scraping is not considered.
Disclosure of Invention
The utility model aims to: the utility model aims to provide a backwashing type electric flocculation device capable of backwashing an electrode plate and adjusting the liquid level height.
The technical scheme is as follows: in order to achieve the aim, the backwashing type electric flocculation device comprises an electric flocculation reaction area, a flotation sedimentation area and a clean water tank, wherein the lower part of the electric flocculation reaction area is provided with a sewage water inlet and a dissolved air tank connector, the tank opening of the flotation sedimentation area is lower than the tank opening of the electric flocculation reaction area, sewage is convenient to overflow from the electric flocculation reaction area to the flotation sedimentation area, the flotation sedimentation area and the lower part of the clean water tank are provided with intercommunication openings, a reflux pump is arranged between the clean water tank and the electric flocculation reaction area, water in the clean water tank is pumped into the electric flocculation reaction area through an upper flushing pipe and a lower flushing pipe by the reflux pump, the electrode plate is backwashed, and the clean water tank is also internally provided with a liquid level adjusting device connected with a water outlet through a hose.
Wherein, the reflux pump is a dissolved air pump.
The liquid level regulating device comprises a frame-type support, a screw rod and a cylindrical hole sleeve, wherein the upper end of the support is provided with a threaded hole, the cylindrical hole sleeve is fixed at the lower end of the screw rod, threads are arranged on the screw rod, the cylindrical hole sleeve is driven to move up and down in the support through matching with the threaded hole, and an inner hole of the cylindrical hole sleeve is connected with a water outlet through a hose.
Wherein, the liquid level regulating device is fixed in the clean water tank through the bracket.
Wherein, the upper layer of the flotation sedimentation area is provided with a chain slag scraping machine and a slag accumulation groove, and a slag scraping plate of the chain slag scraping machine stretches into the flotation sedimentation area and transversely moves in the pool to scrape the scum into the slag accumulation groove.
Wherein, a slag baffle is arranged at one side of the flotation precipitation zone, which is close to the slag accumulation groove, so that the chain slag scraper can scrape out scum conveniently, and clear water is retained.
Wherein, slag discharging pipes for discharging scum are arranged in the slag accumulating groove.
Wherein, the electrode plate is aluminum plate.
The beneficial effects are that: the utility model has the following advantages: 1. the utility model makes the back cleaning operation more convenient and efficient through the reflux pump and the upper and lower flushing pipes, compared with the traditional cleaning mode, the utility model can reduce the hardening phenomenon of the electrode plate, thereby improving the electrolysis efficiency and stability, reducing the energy consumption of the whole treatment system, meeting the requirements of energy conservation and environmental protection, and simultaneously, the back cleaning is periodically carried out, the service life of the electrode plate can be prolonged, and the maintenance cost is reduced;
2. the utility model adds the liquid level regulating device, so that the liquid level of the floatation sedimentation zone can be maintained at a relatively stable height, and the thickness of the scraped slag can be effectively controlled, thereby improving the efficiency of scraping the slag and the purification effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the device;
fig. 2 is a schematic diagram of the structure of the liquid level adjusting device.
Detailed Description
The technical scheme of the present utility model will be described in detail with reference to the following examples and the accompanying drawings.
As shown in figure 1, the backwashing type electric flocculation device comprises an electric flocculation reaction zone 1, a floatation sedimentation zone 2 and a clean water tank 3, wherein a sewage water inlet 4 and a dissolved air tank interface 5 are arranged at the lower part of the electric flocculation reaction zone 1, the tank opening of the floatation sedimentation zone 2 is lower than the tank opening of the electric flocculation reaction zone 1, sewage is convenient to overflow from the electric flocculation reaction zone 1 to the floatation sedimentation zone 2, and an intercommunication opening 6 is arranged at the lower parts of the floatation sedimentation zone 2 and the clean water tank 3.
In the case of the electric flocculation treatment, the generated flocs need to be separated and removed. The device adopts the air floatation technology, namely, a dissolved air tank is externally connected through an interface 5, gas is injected into sewage, bubbles are formed in the water, flocculates are wrapped in the water, the flocculates float on the water surface to form scum, and then the scum flows into a floatation sedimentation zone 2 to be further processed. In addition, to enhance the treatment effect, a sewage inlet 4 is provided at the lower portion of the electric flocculation reaction zone 1, and an upward water flow is generated when sewage enters the tank, to further promote the combination of bubbles and flocs and the purification effect.
The upper layer of the flotation sedimentation zone 2 is provided with a chain slag scraper 14 and a slag accumulation groove 15, a slag scraping plate 14.1 of the chain slag scraper 14 penetrates into the flotation sedimentation zone 2 and transversely moves in the pool to scrape the scum into the slag accumulation groove 15, one side, close to the slag accumulation groove 15, of the flotation sedimentation zone 2 is provided with a slag blocking plate 16, the chain slag scraper 14 is convenient to scrape the scum, clear water is trapped, and a slag discharging pipe for discharging the scum is further arranged in the slag accumulation groove 15.
A reflux pump 7 is arranged between the clean water tank 3 and the electric flocculation reaction zone 1. The pump pumps the water in the clean water tank 3 into the electroflocculation reaction zone 1 through the upper flushing pipe 8 and the lower flushing pipe 9 so as to back flush the electrode plate 10. In addition, the reflux pump 7 adopts a dissolved air pump, and air is injected into the water while the electrode plate 10 is backwashed, so that the generated flocculate forms scum, and the purifying effect is further improved.
The clear water tank 3 is also internally provided with a liquid level regulating device 13, and the liquid level regulating device 13 comprises a frame-type bracket 13.1, a screw 13.2 and a cylindrical hole sleeve 13.3; the liquid level regulating device 13 is fixed in the clean water tank 3 through a bracket 13.1; the upper end of the bracket 13.1 is provided with a threaded hole 13.4, the cylindrical hole sleeve 13.3 is fixed at the lower end of the screw 13.2, an inner hole is connected with the water outlet 12 through the hose 11, threads are arranged on the screw 13.2, the cylindrical hole sleeve 13.3 is driven to move up and down in the bracket 13.1 by being matched with the threaded hole 13.4, and water in the clean water tank 3 enters the hose 11 from the inner hole of the cylindrical hole sleeve 13.3 and is discharged from the water outlet 12.
The cylindrical hole sleeve 13.3 can move up and down in the clean water tank 3 along with the screw rod 13.2, and meanwhile, the highest point of the bracket 13.1 is higher than the tank mouth of the flotation sedimentation zone 2, so that the drainage position in the tank can be conveniently adjusted. Because the length of the scraping plate 14.1 is limited, when the liquid level of the flotation precipitation zone 2 is too low, the scraping effect of the scraping plate 14.1 is not ideal, at this time, the position of the cylindrical hole sleeve 13.3 can be increased to improve the drainage water level until the overflow amount in the flotation precipitation zone 2 reaches the degree that the scraping plate 14.1 can effectively scrape slag, at this time, the position of the cylindrical hole sleeve 13.3 can be reduced, so that the liquid level of the flotation precipitation zone 2 is maintained at a certain scraping height to control the thickness of the scraped slag, and the scraping efficiency is improved.
The electrode plate 10 is made of aluminum plate, under the action of direct current, the anode is eroded to generate Al ions, and the Al ions are finally converted into various hydroxides through a series of electrochemical oxidation processes such as hydrolysis, polymerization and the like, so that colloidal impurities and suspended impurities in the sewage are effectively removed through flocculation and precipitation. Meanwhile, a dissolved air tank is externally connected to the electric flocculation reaction area below the electrode plate 4, so that micro aeration can be performed on the electrode plate 4, and the air flotation efficiency is increased.
Claims (8)
1. The utility model provides a backwash formula electric flocculation device, including electric flocculation reaction zone (1), flotation sedimentation zone (2), clean water basin (3), electric flocculation reaction zone (1) lower part is equipped with sewage water inlet (4) and dissolves gas pitcher interface (5), and flotation sedimentation zone (2) pond mouth is less than the pond mouth of electric flocculation reaction zone (1), and the sewage of being convenient for overflows from electric flocculation reaction zone (1) to flotation sedimentation zone (2), and flotation sedimentation zone (2) are equipped with intercommunication mouth (6) with clean water basin (3) lower part, its characterized in that: a reflux pump (7) is arranged between the clean water tank (3) and the electric flocculation reaction zone (1), the reflux pump (7) pumps water in the clean water tank (3) into the electric flocculation reaction zone (1) through an upper flushing pipe (8) and a lower flushing pipe (9), the electrode plate (10) is backwashed, and a liquid level regulating device (13) connected with a water outlet (12) through a hose (11) is also arranged in the clean water tank (3).
2. The backwash electric flocculation apparatus as set forth in claim 1 wherein: the reflux pump (7) is a dissolved air pump.
3. The backwash electric flocculation apparatus as set forth in claim 1 wherein: the liquid level adjusting device (13) comprises a frame-type bracket (13.1), a screw (13.2) and a cylindrical hole sleeve (13.3), wherein a threaded hole (13.4) is formed in the upper end of the bracket (13.1), and the cylindrical hole sleeve (13.3) is fixed at the lower end of the screw (13.2); screw threads are arranged on the screw rod (13.2), the cylindrical hole sleeve (13.3) is driven to move up and down in the bracket (13.1) through being matched with the screw holes (13.4), and the inner hole of the cylindrical hole sleeve (13.3) is connected with the water outlet (12) through the hose (11).
4. A backwash electric flocculation device according to claim 1 wherein the liquid level adjusting device (13) is fixed in the clean water tank (3) by a bracket (13.1).
5. The backwashing type electric flocculation device according to claim 1, wherein a chain slag scraping machine (14) and a slag accumulating groove (15) are arranged on the flotation precipitation zone (2), and a slag scraping plate (14.1) of the chain slag scraping machine (14) stretches into the flotation precipitation zone (2) and transversely moves in the pond to scrape scum into the slag accumulating groove (15).
6. The backwashing type electric flocculation device according to claim 5, wherein a slag blocking plate (16) is arranged on one side, close to the slag accumulation groove (15), in the flotation precipitation zone (2) so as to facilitate scum scraping by the chain slag scraper (14) and intercept clear water.
7. A backwash electric flocculation apparatus according to claim 4 or 5 wherein a slag discharge pipe for discharging scum is provided in the slag accumulation tank (15).
8. A backwash electric flocculation apparatus according to claim 1 wherein the electrode plate (10) is an aluminum plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321252796.0U CN219907151U (en) | 2023-05-23 | 2023-05-23 | Backwash type electric flocculation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321252796.0U CN219907151U (en) | 2023-05-23 | 2023-05-23 | Backwash type electric flocculation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219907151U true CN219907151U (en) | 2023-10-27 |
Family
ID=88429960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321252796.0U Active CN219907151U (en) | 2023-05-23 | 2023-05-23 | Backwash type electric flocculation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219907151U (en) |
-
2023
- 2023-05-23 CN CN202321252796.0U patent/CN219907151U/en active Active
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