CN114380369A - Device and method for rapidly recovering phosphate based on weak electric field - Google Patents
Device and method for rapidly recovering phosphate based on weak electric field Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 22
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 21
- 239000010452 phosphate Substances 0.000 title claims abstract description 21
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 50
- 238000001914 filtration Methods 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical compound [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000002734 clay mineral Substances 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000003456 ion exchange resin Substances 0.000 claims description 4
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002808 molecular sieve Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 39
- 239000011574 phosphorus Substances 0.000 abstract description 38
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 37
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 62
- 239000000126 substance Substances 0.000 description 9
- 241000251468 Actinopterygii Species 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
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- 230000009471 action Effects 0.000 description 3
- 238000010170 biological method Methods 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 239000008239 natural water Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003957 anion exchange resin Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 239000005416 organic matter Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- -1 phosphorus ions Chemical class 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 231100000085 chronic toxic effect Toxicity 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 239000012716 precipitator Substances 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention belongs to the technical field of organic pollutant treatment, and particularly relates to a device and a method for rapidly recovering phosphate based on a weak electric field. The device for rapidly recovering phosphate based on the weak electric field comprises a power supply, a cathode, an anode, a coarse filtering layer, a fine filtering layer, an adsorption layer and adsorption equipment; the anode is positioned inside the adsorption equipment, the adsorption layer is contacted with the outer wall of the adsorption equipment, and the fine filter layer is positioned between the coarse filter layer and the adsorption layer. Under the condition of electrification, the phosphorus adsorption effect of the method is obviously higher than that of a control group, and the CODcr is also reduced continuously.
Description
Technical Field
The invention relates to the technical field of organic pollutant treatment, in particular to a device and a method for rapidly recovering phosphate based on a weak electric field.
Background
Eutrophication of water causes massive propagation of algae in water, and the dissolved oxygen is sharply reduced, thus seriously damaging the ecological environment of the water and threatening the survival of aquatic organisms and the health of human beings. Eutrophication pollution of water bodies has become a significant problem in China all over the world at present. The main reason for eutrophication pollution is due to the excessive amount of organic matter, nitrogen, phosphorus and other nutrients discharged into the water. Research shows that most of the control factors of eutrophic water are phosphorus, so that the removal of phosphorus in polluted water is particularly important.
The common methods for removing phosphorus mainly comprise a chemical method and a biological method. The biological phosphorus removal is based on the principle that phosphorus is absorbed and released by phosphorus-accumulating bacteria under aerobic and anaerobic conditions, and phosphorus removal is realized by the alternate operation of aerobic and anaerobic processes. After phosphorus in the water body is absorbed by phosphorus accumulating bacteria, the phosphorus is deposited at the water bottom in the form of residual activated sludge, and then the residual activated sludge is discharged to form solid waste for retreatment. The chemical phosphorus removal mainly refers to the method for producing insoluble phosphate precipitate by using metal ions generated by iron salt, aluminum salt, lime and the like and phosphate radical to remove phosphorus in water. However, whether biological phosphorus removal or chemical treatment is adopted, the precipitate is formed and then treated, which can be easily done in a sewage treatment plant or a special sewage treatment facility, but is difficult to do in natural ecological water bodies, polluted river channels, lakes, landscape water bodies and the like, especially in a biological method like the operation mode of the sewage treatment plant. The existing common method is to adopt a desilting mode, or firstly adopt a chemical precipitation method for precipitation and then carry out desilting treatment, the method is also possible to a certain extent, but the process is a balanced reaction of precipitation and dissolution, on one hand, the alkalinity in the water body causes partial precipitation of metal hydroxide, and partial chemical reagent is consumed; on the other hand, to achieve a lower concentration of phosphorus ions, a higher concentration of metal ions in the water must be maintained. Because the phenomenon of quasi-equilibrium of tiny precipitated particles causes an apparent solubility product to greatly improve a real solubility product, in order to achieve the condition of forming phosphate precipitation, the concentration of a metal ion precipitator needing to be added is often 1-2 orders of magnitude greater than the normal solubility product, so the cost is high, the construction period is long, the surrounding environment is greatly influenced in the construction process, the adopted chemical agents can generate secondary pollution, the concentration of residual metal ions (such as iron ions) in a water body is also high, the excessive metal ion concentration can also generate a chronic toxic effect on organisms in the water body, and if the desilting treatment is not carried out in time, the precipitated phosphorus compounds can be destabilized and are dissolved in the water body again, so the vicious circle is caused. Therefore, chemical reagents are strictly forbidden to be added into natural ecological water bodies in all places.
Phosphorus elements in natural water bodies such as riverways, hubbes, landscape water bodies, fish ponds and the like exist in the form of orthophosphate, polyphosphate and organic phosphorus in the water bodies, and the polyphosphate and the organic phosphorus in the water bodies can be gradually converted into the form of orthophosphate under the action of microorganisms. When treating eutrophic polluted water, the organic matter in the water is degraded under the action of the life activity and metabolism of microbes, and CO is used2Is released in the form of N under the action of microbes2Is released from the body of water, only phosphorus cannot be released from the contaminated body of water in a gaseous manner. At present, the method commonly used is to plant aquatic plants and breed aquatic animals such as fish for gradual reduction, which consumes a long time and is closely related to factors such as temperature, season and the like. Therefore, in order to rapidly treat the polluted water and restore the water ecological environment, the phosphorus content in the polluted water needs to be rapidly reduced.
Biological methods and chemical methods have disadvantages, but are not suitable for being used in natural water body ecological properties such as riverways, lakes, reservoirs, landscape water bodies and the like, and can not recover phosphorus. While the adsorption method for removing phosphorus makes up for the defects of the method to a certain extent. The adsorption method is a high-efficiency and low-consumption method for removing specific solute from low-concentration solution, and is particularly suitable for removing harmful substances in wastewater. The dual purposes of eliminating phosphorus pollution and recovering phosphorus can be achieved by utilizing an adsorption-desorption method.
The adsorbent is utilized to provide a large specific surface area, the separation of phosphorus from a water body is realized through the processes of phosphorus adhesion adsorption, ion exchange or surface precipitation on the surface of the adsorbent, and phosphorus resources can be recovered through further desorption treatment, so that waste is changed into valuable. The existing adsorbents mainly comprise: clay minerals, natural materials and waste residues, such as kaolin, natural zeolite, fly ash and the like; active metal oxides and modified substances thereof, such as porous alumina; ③ silicon-based mesoporous molecular sieves; and ion exchange resin. Each of these adsorbents has advantages, but the methods of use are similar as: firstly, an adsorption device is established, and adsorption foundations such as pipelines need to be installed and erected; conveying polluted water to constructed basic equipment by adopting power equipment for adsorption; erecting water pumping pipelines at different places to pump water; fourthly, the sewage of the water body to be treated is required to be gradually pumped into an adsorption facility for treatment, and the like.
It can be seen that both biological, chemical and adsorption methods have certain drawbacks.
Disclosure of Invention
The invention aims to provide a device and a method for rapidly recovering phosphate based on a weak electric field, so as to make up for the defects of the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a device for rapidly recovering phosphate based on a weak electric field, which comprises a power supply, a cathode, an anode, a coarse filtering layer, a fine filtering layer, an adsorption layer and adsorption equipment, wherein the cathode is connected with the anode;
the anode is positioned inside the adsorption equipment, the adsorption layer is contacted with the outer wall of the adsorption equipment, and the fine filter layer is positioned between the coarse filter layer and the adsorption layer.
Preferably, the anode is connected to an anode of a power supply, and the cathode comprises two cathodes connected to a cathode of the power supply.
Preferably, the filtering precision of the coarse filtering layer is 100-150 μm, the filtering precision of the fine filtering layer is 30-50 μm, and the adsorption layer comprises one or more of clay minerals, kaolin, natural zeolite, fly ash, porous alumina, a silicon-based mesoporous molecular sieve and ion exchange resin.
Preferably, the cathode is a graphite electrode, a titanium electrode, an electrode coated with ruthenium-iridium coating, an iron electrode or an aluminum electrode, and the anode is a graphite electrode, a titanium electrode or an electrode coated with ruthenium-iridium coating.
Preferably, the anode is a hollow and porous structure.
The invention also provides a method for rapidly recovering phosphate based on a weak electric field by using the device, which comprises the following steps:
after the device was assembled, the device was powered on to recover phosphate.
Preferably, the distance between the cathode and the adsorption equipment is 0.5-5 m.
Preferably, the electrified voltage is 5-12V, and the current is 10-30 mA.
The principle of the invention is as follows:
after the power is turned on, H in the water body2PO4-、HPO4 2-The plasma anions will move towards the anode and will necessarily pass through the adsorption layer, then H2PO4-、HPO4 2-Will be adsorbed to the adsorbing material filled in the adsorbing layer and H in other areas in the water body2PO4-、HPO4 2-The ions will diffuse into the processing region as the ion concentration in the processing region decreases, so that non-moving processing can be achieved. Meanwhile, cations can move to the cathode, and other electrochemical reactions occur at the anode and the cathode:
anode: 2OH-→2[O]+2e→O2↑+2e
Cathode: 2H++2e→2[H]→H2↑
The active oxygen generated at the anode and the active hydrogen generated at the cathode can oxidize organic matters in the water body and further degrade the organic matters in the water body.
The device provided by the invention can be directly placed in a water body, and the voltage and the current can be adjusted by electrifying the current, so that the treatment for 24 hours can be realized, and the unattended operation can also be realized. If the field can not be connected with a power supply, a solar power supply system can be adopted, and the solar power supply system can be directly added on the existing equipment, so that the solar power supply system is economic and environment-friendly.
After the adsorption material is saturated, the adsorption material can be analyzed by using a regenerant, phosphate ions in the water body can be analyzed and recycled, and the adsorption material can be reused.
Drawings
FIG. 1 is a top view of an apparatus for rapid phosphate recovery based on a weak electric field;
FIG. 2 is a cross-sectional view of an apparatus for rapid phosphate recovery based on a weak electric field;
wherein, 1-a coarse filter layer; 2-fine filtration layer; 3-an adsorption layer; 4-adsorption equipment.
Detailed Description
The invention provides a device for rapidly recovering phosphate based on a weak electric field, which comprises a power supply, a cathode, an anode, a coarse filtering layer, a fine filtering layer, an adsorption layer and adsorption equipment, wherein the cathode is connected with the anode;
the anode is positioned inside the adsorption equipment, the adsorption layer is contacted with the outer wall of the adsorption equipment, and the fine filter layer is positioned between the coarse filter layer and the adsorption layer.
In the invention, the anode is connected with the anode of the power supply, and the two cathodes are connected with the cathode of the power supply; the power supply is a constant current power supply.
In the invention, the coarse filter layer mainly blocks fine suspended matters in a water body, and the filtering precision is 100-150 μm, preferably 120-130 μm; the fine filtering layer is mainly used for blocking larger colloid substances in the water body, and the filtering precision is 30-50 microns, preferably 35-45 microns; the adsorption layer comprises one or more of clay mineral, kaolin, natural zeolite, fly ash, porous alumina, silicon-based mesoporous molecular sieve and ion exchange resin, and is preferably large-aperture strong-basicity anion exchange resin.
In the invention, the cathode is a graphite electrode, a titanium electrode, an electrode coated with ruthenium-iridium coating, an iron electrode or an aluminum electrode, and the anode is a graphite electrode, a titanium electrode or an electrode coated with ruthenium-iridium coating.
In the present invention, the anode is a hollow and porous structure; if the water needs to be treated more quickly, particularly in areas with wider water areas such as riverways, hubbers and the like, the device can be placed between two boats, and the treated water area is increased along with the slow and slow movement of the boats. In addition, the anode can be made to be hollow, small holes are drilled in the surfaces of different positions of the anode, water passing through the adsorption layer can flow into the anode, a water pumping pipeline is arranged inside the anode, water inside the anode is continuously pumped out, at the moment, the treated water continuously passes through the adsorption layer, the mobility of a water body is enhanced, and the adsorption rate of phosphate radicals is enhanced.
The invention also provides a method for rapidly recovering phosphate based on a weak electric field by using the device, which comprises the following steps:
after the device was assembled, the device was powered on to recover phosphate.
In the invention, the distance between the cathode and the adsorption equipment is 0.5-5 m, preferably 2-3 m.
In the invention, the electrified voltage is 5-12V, preferably 8-10V; the current is 10 to 30mA, preferably 15 to 25 mA.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
At two 1m3Adding 800L fishpond water into the containers, respectively placing into the apparatus shown in FIG. 1, selecting macroporous strongly basic styrene anion exchange resin as adsorption material, wherein the non-electrified one is control group, the electrified one is rapid treatment device, adjusting voltage of the electrified device to 5V, controlling current at 10mA, measuring data every 2 hours, raw water data is CODcr 58.43mg/L, total phosphorus is 12.91mg/L, and the data is shown in the following table 1:
table 1: water treatment process substance content change table
As can be seen from Table 1, the adsorption effect of phosphorus by the method of this example was significantly higher than that of the control group, and CODcr was also continuously decreased.
Example 2
In a water body of about 260m3The placing treatment capacity of the closed landscape water body is 20m3The small rapid processing apparatus of/d. The voltage of the electrifying device is adjusted to 6V, the current is controlled to be 12mA, the data is measured every 3 days, the raw water data is that CODcr is 75.66mg/L, and the data of total phosphorus is 5.72mg/L is shown in the following table 2:
table 2: material content change table in closed landscape water body treatment process
| Time | CODcr(mg/L) | Total phosphorus (in terms of P, mg/L) |
| |
67.38 | 4.51 |
| Day 6 | 62.14 | 3.28 |
| Day 9 | 54.90 | 2.03 |
| Day 12 | 47.31 | 0.95 |
As can be seen from the data in Table 2, after the closed landscape water body is used for 12 days, the CODcr removal rate in the closed landscape water body reaches 37.47%, the total phosphorus removal rate reaches 83.39%, the removal efficiency is particularly obvious, and the phenomena of stinking and blackening of the landscape water body are prevented.
Example 3
The treatment capacity and the treatment capacity are 30m when the fish pond with 1.5 mu is placed3A rapid processing device of/d. The voltage of the electrifying device is adjusted to 10V, and the current is controlled to be 20 mA. The water quantity of the fishpond is about 1200m3Because the fishpond needs to be fed with feed every day, the fishpond is sampled every 2 days before treatment, the sampling is continuously carried out for 5 times, the change of CODcr and total phosphorus is observed, and the data is shown in a table 3:
table 3: water quality change before and after fishpond treatment
As shown in Table 3, the feed was added daily to feed fish, which resulted in a slow rise in CODcr and total phosphorus in the pond, and the aeration facility was provided in the pond, which resulted in a slow rise in CODcr. After the rapid treatment device is placed, CODcr and total phosphorus have a tendency of descending, particularly the descending amplitude of the total phosphorus, the removal rate reaches 25.18 percent after the treatment of 12 days, and the fish feed contains phosphorus elements with a certain proportion under the condition of continuously adding the feed to feed the fish, so the actual effect is more obvious. The device is used for treating fish ponds, can obviously reduce the generation amount of total phosphorus, and plays a significant role in protecting natural water bodies such as riverways, lakes, reservoirs and the like in the area.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A device for rapidly recovering phosphate based on a weak electric field is characterized by comprising a power supply, a cathode, an anode, a coarse filtering layer, a fine filtering layer, an adsorption layer and adsorption equipment;
the anode is positioned inside the adsorption equipment, the adsorption layer is contacted with the outer wall of the adsorption equipment, and the fine filter layer is positioned between the coarse filter layer and the adsorption layer.
2. The apparatus of claim 1, wherein the anode is connected to an anode of a power source and the cathode comprises two cathodes connected to a cathode of the power source.
3. The device according to claim 1 or 2, wherein the filtration precision of the coarse filtration layer is 100-150 μm, the filtration precision of the fine filtration layer is 30-50 μm, and the adsorption layer comprises one or more of clay minerals, kaolin, natural zeolite, fly ash, porous alumina, silicon-based mesoporous molecular sieves and ion exchange resins.
4. The device according to claim 3, wherein the cathode is a graphite electrode, a titanium electrode, a ruthenium iridium coated electrode, an iron electrode or an aluminum electrode, and the anode is a graphite electrode, a titanium electrode or a ruthenium iridium coated electrode.
5. The device of claim 1, 2 or 4, wherein the anode is a hollow and porous structure.
6. The method for rapidly recovering phosphate based on a weak electric field by using the device of any one of claims 1 to 5, characterized by comprising the following steps:
after the device was assembled, the device was powered on to recover phosphate.
7. The method according to claim 6, wherein the distance between the cathode and the adsorption equipment is 0.5-5 m.
8. The method according to claim 6 or 7, wherein the electrified voltage is 5-12V and the current is 10-30 mA.
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Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2099803C1 (en) * | 1996-04-01 | 1997-12-20 | Свердловский филиал Научно-исследовательского и конструкторского института энерготехники | Method and device for cleaning process and natural water from radionuclides |
| CN1359431A (en) * | 1999-07-01 | 2002-07-17 | 阿特拉沃达有限公司 | Electrode |
| CN1809415A (en) * | 2003-06-23 | 2006-07-26 | 瓦藤福尔股份公司 | Boron separation and recovery |
| CN102001722A (en) * | 2010-11-04 | 2011-04-06 | 南京大学 | Method for removing phosphate from water by using zirconia-modified mesoporous silicon material |
| JP2012014873A (en) * | 2010-06-29 | 2012-01-19 | Sanyo Electric Co Ltd | Membrane electrode joined body and fuel cell |
| CN103894139A (en) * | 2014-02-18 | 2014-07-02 | 燕山大学 | Preparation method of carrying type laminated hydroxyl magnesium oxide composite material |
| CN203781883U (en) * | 2014-02-19 | 2014-08-20 | 浙江大学 | Circulating type device for removing phosphorous from wastewater by electro-adsorption |
| CN205289228U (en) * | 2015-11-12 | 2016-06-08 | 中国科学院南京土壤研究所 | Normal position electrokinetic remediation engineering device of soil is polluted in portable place |
| CN105923945A (en) * | 2016-05-16 | 2016-09-07 | 浙江工商大学 | Device and method for recycling phosphorus in sludge without energy consumption by means of assistance of bioelectrochemistry |
| CN106277232A (en) * | 2016-08-04 | 2017-01-04 | 南京工业大学 | A kind of remove a small amount of nitrogen and the electrochemical method of phosphorus in water |
| CN106745538A (en) * | 2017-01-05 | 2017-05-31 | 重庆文理学院 | Elemental phosphorous method is reclaimed in a kind of waste water from hypophosphites |
| CN206981413U (en) * | 2017-07-17 | 2018-02-09 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A kind of barrier prosthetic device for heavy-metal contaminated soil |
| CN108292770A (en) * | 2015-11-20 | 2018-07-17 | 凯米罗总公司 | Microbiological fuel cell unit, its purposes and microbiological fuel cell arrangement |
| CN211284001U (en) * | 2019-09-05 | 2020-08-18 | 广东工业大学 | Waste water treatment device |
| CN111634985A (en) * | 2020-06-12 | 2020-09-08 | 东北大学 | UiO-66-based CDI pole plate and device and method for removing phosphate |
| CN211664831U (en) * | 2020-01-23 | 2020-10-13 | 天津嘉泰伟业化工有限公司 | Efficient and environment-friendly sewage treatment equipment |
| CN212559858U (en) * | 2020-05-15 | 2021-02-19 | 浙江桃花源环保科技有限公司 | Electrochemical and biological combined pretreatment device for small sewage draining outlet |
| CN112607847A (en) * | 2020-11-19 | 2021-04-06 | 西北工业大学 | Sewage nitrogen and phosphorus removal treatment method, device and application |
| CN112919589A (en) * | 2021-01-29 | 2021-06-08 | 陕西科技大学 | Penetrating type electro-catalysis water treatment device and operation method |
| CN113955864A (en) * | 2021-11-23 | 2022-01-21 | 青岛理工大学 | System for reducing water hardness and method for reducing water hardness |
| CN113955844A (en) * | 2021-07-21 | 2022-01-21 | 温州大学 | Electrochemical reinforced artificial wetland device and method for treating polluted water body by using same |
-
2022
- 2022-01-27 CN CN202210101417.1A patent/CN114380369A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2099803C1 (en) * | 1996-04-01 | 1997-12-20 | Свердловский филиал Научно-исследовательского и конструкторского института энерготехники | Method and device for cleaning process and natural water from radionuclides |
| CN1359431A (en) * | 1999-07-01 | 2002-07-17 | 阿特拉沃达有限公司 | Electrode |
| CN1809415A (en) * | 2003-06-23 | 2006-07-26 | 瓦藤福尔股份公司 | Boron separation and recovery |
| JP2012014873A (en) * | 2010-06-29 | 2012-01-19 | Sanyo Electric Co Ltd | Membrane electrode joined body and fuel cell |
| CN102001722A (en) * | 2010-11-04 | 2011-04-06 | 南京大学 | Method for removing phosphate from water by using zirconia-modified mesoporous silicon material |
| CN103894139A (en) * | 2014-02-18 | 2014-07-02 | 燕山大学 | Preparation method of carrying type laminated hydroxyl magnesium oxide composite material |
| CN203781883U (en) * | 2014-02-19 | 2014-08-20 | 浙江大学 | Circulating type device for removing phosphorous from wastewater by electro-adsorption |
| CN205289228U (en) * | 2015-11-12 | 2016-06-08 | 中国科学院南京土壤研究所 | Normal position electrokinetic remediation engineering device of soil is polluted in portable place |
| CN108292770A (en) * | 2015-11-20 | 2018-07-17 | 凯米罗总公司 | Microbiological fuel cell unit, its purposes and microbiological fuel cell arrangement |
| CN105923945A (en) * | 2016-05-16 | 2016-09-07 | 浙江工商大学 | Device and method for recycling phosphorus in sludge without energy consumption by means of assistance of bioelectrochemistry |
| CN106277232A (en) * | 2016-08-04 | 2017-01-04 | 南京工业大学 | A kind of remove a small amount of nitrogen and the electrochemical method of phosphorus in water |
| CN106745538A (en) * | 2017-01-05 | 2017-05-31 | 重庆文理学院 | Elemental phosphorous method is reclaimed in a kind of waste water from hypophosphites |
| CN206981413U (en) * | 2017-07-17 | 2018-02-09 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A kind of barrier prosthetic device for heavy-metal contaminated soil |
| CN211284001U (en) * | 2019-09-05 | 2020-08-18 | 广东工业大学 | Waste water treatment device |
| CN211664831U (en) * | 2020-01-23 | 2020-10-13 | 天津嘉泰伟业化工有限公司 | Efficient and environment-friendly sewage treatment equipment |
| CN212559858U (en) * | 2020-05-15 | 2021-02-19 | 浙江桃花源环保科技有限公司 | Electrochemical and biological combined pretreatment device for small sewage draining outlet |
| CN111634985A (en) * | 2020-06-12 | 2020-09-08 | 东北大学 | UiO-66-based CDI pole plate and device and method for removing phosphate |
| CN112607847A (en) * | 2020-11-19 | 2021-04-06 | 西北工业大学 | Sewage nitrogen and phosphorus removal treatment method, device and application |
| CN112919589A (en) * | 2021-01-29 | 2021-06-08 | 陕西科技大学 | Penetrating type electro-catalysis water treatment device and operation method |
| CN113955844A (en) * | 2021-07-21 | 2022-01-21 | 温州大学 | Electrochemical reinforced artificial wetland device and method for treating polluted water body by using same |
| CN113955864A (en) * | 2021-11-23 | 2022-01-21 | 青岛理工大学 | System for reducing water hardness and method for reducing water hardness |
Non-Patent Citations (2)
| Title |
|---|
| 彭党聪主编: "《环境工程毕业设计指南：以城市排水工程涉及为例》", 30 April 2010, 哈尔滨工业大学出版社, pages: 259 * |
| 程玉峰, 杜元龙, 曹楚南: "Na_2SO_4溶液中磷酸环己胺的缓蚀机理及其吸附与脱附行为", 中国腐蚀与防护学报, no. 02 * |
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