CN218435446U - Series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption - Google Patents
Series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption Download PDFInfo
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- CN218435446U CN218435446U CN202222801825.6U CN202222801825U CN218435446U CN 218435446 U CN218435446 U CN 218435446U CN 202222801825 U CN202222801825 U CN 202222801825U CN 218435446 U CN218435446 U CN 218435446U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The utility model discloses a series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption, including valve, electrolytic cell and a plurality of lanthanum oxide modified zeolite reaction zones, connect in parallel between a plurality of lanthanum oxide modified zeolite reaction zones, include stainless steel water pipe and a plurality of lanthanum oxide modified zeolite reaction column body in the lanthanum oxide modified zeolite reaction zone, the laminating of lanthanum oxide modified zeolite reaction column body is on the inner wall of stainless steel water pipe, all is provided with water inlet and delivery port on electrolytic cell and the lanthanum oxide modified zeolite reaction zone, at every electrolytic cell, the water inlet in lanthanum oxide modified zeolite reaction zone all is provided with the valve. The function is as follows: firstly, each valve can control the water inflow of each part, and the treatment time and the water flow can be controlled according to different sewage; secondly, if a certain part or link breaks down, the valve can be immediately closed to stop working and be quickly overhauled, and other parts work normally while overhauling, so that the whole water body treatment work is not influenced.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption.
Background
Sewage refers to water discharged during production and domestic activities, including domestic sewage, industrial wastewater, and initial rainwater. The main pollution sources of the plant nutrient are pathogen pollutants, plant nutrients and the like. The secondary treatment effluent refers to effluent subjected to secondary treatment. The primary treatment plant mainly removes pollutants by using a physical method (such as a barrier, a sedimentation tank and the like), and effluent reaches a primary treatment standard and has a certain removing effect on insoluble pollutants. The secondary treatment plant mainly uses biological treatment methods (such as activated sludge, anaerobic and aerobic and the like) to remove soluble pollutants on the basis of primary treatment to reach secondary treatment standards, and is the main form for treating municipal sewage all over the world at present.
Excessive phosphorus content in water leads to eutrophication of the water, resulting in: 1, the transparency of water is reduced, so that sunlight is difficult to penetrate through a water layer, photosynthesis of plants in the water is influenced, dissolved oxygen of the water is reduced, and growth of fishes in the water is influenced. 2 the dead algae and organisms are oxidized in water, the water body becomes smelly, and the water resource is polluted and can not be reused. 3 causing harm to human health. Therefore, dephosphorization is an important process link of sewage plants. The existing dephosphorization technology has the defects of large amount of sludge generation, difficulty in treatment, more used chemical reagents, poor stability and flexibility, secondary environmental pollution, high cost and the like. Especially, biochemical phosphorus removal requires high biomass on a unit area and short retention time, so that the actual sewage treatment effect is not ideal and the phosphorus removal rate is low.
Therefore, a series-parallel connection device for removing the phosphorus content in the sewage through electrocoagulation and lanthanum oxide adsorption becomes a problem to be solved urgently in the whole society.
SUMMERY OF THE UTILITY MODEL
The utility model provides a phosphorus removal device based on lanthanum oxide and electrocoagulation method, use processing apparatus, the lanthanum oxide modified zeolite reaction column of barrier material as the material, use aluminium to be the electrolytic bath of reaction raw and other materials, the valve of control rivers and the filter screen of higher density including the limit wall. The method solves the problem that the traditional electrolytic method and biological method are difficult to degrade phosphate ions because the removal of the phosphate ions is greatly influenced by factors such as temperature, pH value and the like in the existing sewage, thereby meeting the national standard improvement and transformation requirements for sewage dephosphorization and simultaneously improving a series of problems of secondary pollution and higher cost of water body caused by the traditional dephosphorization technology.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a series-parallel connection device of phosphorus content in sewage is got rid of in electricity flocculation and lanthanum oxide absorption, includes valve, electrolytic cell and a plurality of lanthanum oxide modified zeolite reaction district, connects in parallel between a plurality of lanthanum oxide modified zeolite reaction districts, includes stainless steel water pipe and a plurality of lanthanum oxide modified zeolite reaction column body in lanthanum oxide modified zeolite reaction district, the laminating of lanthanum oxide modified zeolite reaction column body is on the inner wall of stainless steel water pipe, all be provided with water inlet and delivery port on electrolytic cell and the lanthanum oxide modified zeolite reaction district, all correspond at the water inlet in every electrolytic cell, lanthanum oxide modified zeolite reaction district and be provided with the valve, the one end of keeping away from the valve at the electrolytic cell is provided with the filter screen.
Furthermore, flow meters are correspondingly arranged between each group of valves and the electrolytic cell.
Furthermore, flowmeters are correspondingly arranged between each group of valves and the lanthanum oxide modified zeolite reaction zone.
Furthermore, a pipeline is connected and arranged at one end of the lanthanum oxide modified zeolite reaction zone, which is far away from the valve.
Furthermore, an aluminum electrode is arranged in the electrolytic cell, one side of the electrolytic cell is an anode, the other side of the electrolytic cell is a cathode, and the electrolytic cell further comprises a concrete electrolytic cell wall.
Furthermore, the lanthanum oxide modified zeolite reaction column body is fixed on the inner wall of the pipeline of the stainless steel water pipe by a steel ring made of plastic soft steel, and a welding connection part is arranged between the stainless steel water pipe and the lanthanum oxide modified zeolite reaction column body.
Compared with the prior art, the utility model advantage lies in:
1. the electrolytic flocculation treatment is used, so that the electrolytic flocculation treatment not only has coagulation and precipitation effects on colloidal impurities and suspended impurities, but also can remove various pollutants in water due to the oxidation effect of the anode and the reduction effect of the cathode.
2. The bipolar type electroflocculation is used, so that the safety and the economy are higher.
3. The utility model discloses a lanthanum oxide modified zeolite is as the adsorbent, reduce cost on the one hand, adsorbs saturated zeolite on the one hand and can high-efficient regeneration under the alkali condition, carries out regeneration and utilizes and has avoided causing secondary pollution to the water as far as possible.
4. The utility model uses the series-parallel connection mode of '2 + 3', and each electrolytic cell and each reaction column are respectively provided with a valve at the water inlet thereof, so that the treatment time and the water flow can be controlled according to different sewage.
5. The utility model discloses use "2+3" series-parallel mode, every electrolytic bath and reaction column add respectively at its water inlet has the valve moreover, can break down in certain part or link, closes the valve at once, makes its stop work, and the quick maintenance, when overhauing, all the other parts work as usual, do not influence going on of whole water treatment work.
Drawings
FIG. 1 is a schematic structural diagram of a series-parallel connection device for removing phosphorus content in sewage by electrocoagulation and lanthanum oxide adsorption;
FIG. 2 is a vertical cross-sectional view of a lanthanum oxide-modified zeolite reaction column;
FIG. 3 is a cross-sectional view of a lanthanum oxide-modified zeolite reaction column;
FIG. 4 is a schematic cross-sectional view of an electrolytic cell;
FIG. 5 is a schematic diagram of the connection mode of the electric flocculation electrode.
The device comprises a valve 1, a valve 2, an electrolytic cell 3, a lanthanum oxide modified zeolite reaction zone 4, a filter screen 5, a flowmeter 6, a pipeline 7, an aluminum electrode 8, a lanthanum oxide modified zeolite reaction column body 9, a steel ring made of plastic mild steel, a stainless steel water pipe 10, a concrete electrolytic cell wall 11, a concrete electrolytic cell wall 12 and a welding connection part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a series-parallel connection device of phosphorus content in sewage is got rid of in absorption of electricity flocculation and lanthanum oxide, including valve 1, electrolytic cell 2 and a plurality of lanthanum oxide modified zeolite reaction district 3, parallelly connected between a plurality of lanthanum oxide modified zeolite reaction districts 3, include stainless steel water pipe 10 and a plurality of lanthanum oxide modified zeolite reaction cylinder 8 in lanthanum oxide modified zeolite reaction district 3, the laminating of lanthanum oxide modified zeolite reaction cylinder 8 is on the inner wall of stainless steel water pipe 10, all be provided with water inlet and delivery port on electrolytic cell 2 and the lanthanum oxide modified zeolite reaction district 3, all correspond at every electrolytic cell 2, the water inlet of lanthanum oxide modified zeolite reaction district 3 and be provided with valve 1, the one end of keeping away from valve 1 at electrolytic cell 2 is provided with filter screen 4.
The utility model discloses a concrete implementation mode and theory of operation as follows:
1. a water inlet and a water outlet are correspondingly arranged on each electrolytic cell 2 and the plurality of lanthanum oxide modified zeolite reaction zones 3, and a water control valve and a flow meter are arranged on one water inlet pipeline so as to control the flow of each reaction column; the lanthanum oxide modified zeolite reaction column is transversely built, the lanthanum oxide modified zeolite reaction column is a cylinder, the length of the cylinder is slightly smaller than the length of a reaction column pipeline, the reaction column cylinder is fixed on the inner wall of the pipeline by using a steel ring made of a plastic mild steel material, the plastic mild steel ring is welded on the inner wall of the pipeline by using a welding technology, and then a large-size steel screw is used for adjustment, so that the maintenance and the replacement of the reaction column are facilitated; the aluminum electrodes in the electrolytic cell are longitudinally positioned in the electrolytic cell, and each electrode is connected with an external power supply; the side wall anti-seepage material of the electrolytic cell is concrete, and the side wall anti-seepage material of the lanthanum oxide modified zeolite reaction column is a stainless steel pipeline; and a filter screen is covered on each reaction column and the water outlet of the electrolytic cell and is used for filtering impurities.
2. The utility model discloses a bipolar aluminum plate electric flocculation dephosphorization, at present electric flocculation has been used in multiple trade of waste water treatment. The utility model discloses well electric flocculation uses aluminium metal as the positive pole, and under the effect of direct current, the positive pole is corroded, produces the Al ion, through a series of hydrolysis, polymerization and ferrous oxidation process, develops into various hydroxyl complex, multinuclear hydroxyl complex so as to the hydroxide, makes colloidal impurity, suspended impurity in the waste water agglomerate and precipitate and separate. Meanwhile, the charged pollutant particles swim in the electric field, and part of charges of the pollutant particles are neutralized by the electrodes to promote destabilization and coagulation.
Compared with the conventional electrocoagulation process, the anode is easy to form a compact oxidation film, passivation phenomenon is generated, the performance of a polar plate is interfered, and the treatment effect is reduced, so that the anode needs to be periodically replaced. The electrodes are connected in a single-stage, bipolar, combined, single-stage and combined manner, each plate is operated at the same voltage and the total current of the reactor is the sum of the currents of the individual units. In the bipolar type, the power supply lines are connected to the electrodes at both ends only, in which way each pair of adjacent plates constitutes a single cell, the total system voltage being the sum of the partial voltages. And the combined type has large consumption on the aluminum plate and high cost. Considering comprehensively with respect to the principle of safety and economy, the utility model discloses a bipolar formula.
3. Lanthanum oxide modified zeolite: lanthanum is an important component of rare earth elements and has high chemical activity. Lanthanum is easily oxidized in air. Lanthanum oxide (La) 2 O 3 ) It is white powder in appearance, is easily affected by moisture in the air, and reacts with water and carbon dioxide to form lanthanum hydroxide [ La (OH) 3 ]And lanthanum carbonate [ La 2 (CO 3 ) 3 ]. Lanthanum oxide has the characteristics of low potential and high alkalinity in water, so lanthanum ions have positive charges in water and can be combined with anions in water, thereby achieving the purpose of adsorption.
Research finds that the lanthanum oxide adsorbent is the lanthanum hydroxide of the utility model has larger adsorption capacity to phosphorus, fluorine, arsenic, ammonia nitrogen and the like in water, and the adsorption rate is high. At present, the lanthanum oxide adsorbent can be used for treating domestic wastewater, industrial polluted wastewater and the like. Because lanthanum nano particles are easy to agglomerate, lanthanum is loaded in a carrier by most of the existing lanthanum-containing adsorption materials, so that the agglomeration of the lanthanum nano particles is reduced, and the contact and the adsorption of the lanthanum nano particles to phosphate radicals are strengthened. Research shows that hydrated lanthanum oxide has larger adsorption capacity to orthophosphate; the adsorption capacity of the zeolite modified by inorganic salts to ammonia nitrogen is improved by times compared with that of natural zeolite, so that the rare earth adsorbent has theoretical basis for deep nitrogen and phosphorus removal. The zeolite as mineral resource has low cost, and the phosphorus adsorption of the loaded lanthanum oxide modified zeolite is obviously increased compared with that of natural zeolite. Therefore, the technology adopts the lanthanum oxide modified zeolite as the adsorbent, on one hand, the cost is reduced, on the other hand, the zeolite with saturated adsorption can be efficiently regenerated under the strong alkali condition, and the secondary pollution to the water body is avoided as much as possible by carrying out regeneration and utilization.
The specific working principle is as follows:
1. firstly, phosphorus-containing sewage respectively enters two single-pole electrolytic cells 2, after the two single-pole electrolytic cells 2 generate aluminum hydroxide through electrolytic aluminum to adsorb phosphate ions and aluminum ions and the phosphate ions generate precipitates, the sewage of the two cells is converged together, enters the same pipeline through primary filtration of a filter screen 4, and then is subjected to subsequent treatment.
2. The sewage is gathered in the same pipeline, then flows into lanthanum oxide modified zeolite reaction column bodies 8 in three lanthanum oxide modified zeolite reaction zones 3 which are connected in parallel, is treated by the same principle as the scheme I, is gathered in the same pipeline again after being treated by the three reaction columns, and is filtered and discharged again by a filter screen 4.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a series-parallel connection device that phosphorus content among sewage was got rid of in electricity flocculation and lanthanum oxide absorption, its characterized in that, including valve (1), electrolytic cell (2) and a plurality of lanthanum oxide modification zeolite reaction district (3), parallelly connected between a plurality of lanthanum oxide modification zeolite reaction districts (3), including stainless steel water pipe (10) and a plurality of lanthanum oxide modification zeolite reaction column body (8) in lanthanum oxide modification zeolite reaction district (3), lanthanum oxide modification zeolite reaction column body (8) laminating is on the inner wall of stainless steel water pipe (10), all be provided with water inlet and delivery port on electrolytic cell (2) and the lanthanum oxide modification zeolite reaction district (3), all correspond at the water inlet of every electrolytic cell (2), lanthanum oxide modification zeolite reaction district (3) and be provided with valve (1), the one end of keeping away from valve (1) in electrolytic cell (2) is provided with filter screen (4).
2. The series-parallel connection device for removing the phosphorus content in sewage through the electrocoagulation and the lanthanum oxide adsorption according to the claim 1, is characterized in that: flow meters (5) are correspondingly arranged between each group of valves (1) and the electrolytic cell (2).
3. The series-parallel connection device for removing the phosphorus content in sewage through the electrocoagulation and the lanthanum oxide adsorption according to the claim 1, is characterized in that: flow meters (5) are correspondingly arranged between each group of valves (1) and the lanthanum oxide modified zeolite reaction zone (3).
4. The series-parallel connection device for removing the phosphorus content in sewage through the electric flocculation and the lanthanum oxide adsorption according to claim 3, is characterized in that: and a pipeline (6) is connected to one end of the lanthanum oxide modified zeolite reaction zone (3) far away from the valve (1).
5. The series-parallel connection device for removing the phosphorus content in the sewage through the electric flocculation and the lanthanum oxide adsorption according to any one of claims 1 to 4, characterized in that: the aluminum electrolysis cell is characterized in that an aluminum electrode (7) is arranged in the electrolysis cell (2), one side of the electrolysis cell (2) is an anode, the other side of the electrolysis cell is a cathode, and the electrolysis cell (2) further comprises a concrete electrolysis cell wall (11).
6. The series-parallel connection device for removing the phosphorus content in sewage through the electrocoagulation and the lanthanum oxide adsorption according to any one of claims 1 to 4, is characterized in that: the lanthanum oxide modified zeolite reaction column body (8) is fixed on the inner wall of a pipeline of a stainless steel water pipe (10) by a steel ring (9) made of a plastic soft steel material, and a welding connection part (12) is arranged between the stainless steel water pipe (10) and the lanthanum oxide modified zeolite reaction column body (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222801825.6U CN218435446U (en) | 2022-10-24 | 2022-10-24 | Series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222801825.6U CN218435446U (en) | 2022-10-24 | 2022-10-24 | Series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption |
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| CN218435446U true CN218435446U (en) | 2023-02-03 |
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| CN202222801825.6U Active CN218435446U (en) | 2022-10-24 | 2022-10-24 | Series-parallel connection device for removing phosphorus content in sewage through electric flocculation and lanthanum oxide adsorption |
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| CN (1) | CN218435446U (en) |
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