Advanced oxidation treatment device for treating and purifying eutrophic water body

Abstract

The utility model discloses an advanced oxidation treatment device for treating and purifying a eutrophic water body, which has the following beneficial effects: (1) the advanced oxidation treatment device is provided with an ozone generator, a multiphase flow gas dissolving pump, a catalyst packing layer, a BDD electrolytic bath and the like; under the synergistic effect of the BDD electrode, ozone micro-nano bubbles and catalyst adsorption catalysis, the oxidation rate and the oxidation effect of ozone can be improved, algae cells are efficiently inactivated, and organic pollutants are efficiently degraded; (2) drug delivery is avoided, the method is environment-friendly, and the costs of drug storage, mixing, transportation and the like are saved; (3) the treatment effect can be flexibly controlled by adjusting parameters such as current density and ozone concentration, so that the treatment requirements under different water quality conditions can be better met; and (4) the device is integrated equipment, and has the characteristics of small volume, simplicity and convenience in operation, easiness in movement and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field, concretely is a kind of senior oxidation treatment device for eutrophication water body management and purification. BACKGROUND

[0002] Natural water body eutrophication, algal overpopulation is increasingly serious.Algae in raw water will not only block filter tank, increase drug consumption, stink, produce toxin, make water quality deteriorate, endanger human health, hinder water plant normal operation.Algae and algal toxins are coexisting.Chemical agent, coagulation, sedimentation and filtration constitute traditional water treatment process, air flotation, biological treatment and other methods are commonly used to control algae.

[0003] Among them, chemical agent method application is flexible, but the dosage of oxidizing agent is too high or the oxidation is too strong to cause algal cell rupture and release a large amount of intracellular organic matter, which can increase the dissolution of algal toxins, and the oxidation of algal toxins by chemical agent needs a long contact time;Air flotation process has heavy odor and sludge is difficult to handle;Coagulation, sedimentation and filtration constitute combined treatment process, which is an economic and applicable choice for treating high-algae water, but the treatment effect on algal toxins is limited;Biological contact oxidation has good effect on algae and algal toxins, but the operation is complex and the relative efficiency is low;Ultrafiltration technology can efficiently intercept algal cells without causing massive rupture of algal cells, and is widely used, has high removal efficiency for algal toxins, but can cause membrane pollution.

[0004] In summary, the existing technology for eutrophication water treatment has the following technical problems: (1) Conventional water treatment process occupies large area. (2) Chemical agent addition for algae control can easily cause secondary pollution and is difficult to control treatment effect. (3) Conventional water treatment process has limited effect on removal of algal toxins. (4) The equipment is heavy, the operation is complex and it is not convenient to move. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a senior oxidation treatment device for eutrophication water body management and purification, which can solve at least one of the above technical problems.

[0007] (II) Technical scheme

[0008] To solve the above technical problems, the utility model provides technical scheme as follows: A kind of advanced oxidation treatment device for eutrophication water body management and purification, including ozone generator, reaction chamber, filter, multiphase flow dissolving gas pump, nozzle, support plate, supporting layer, catalyst packing layer, direct current power supply and BDD electrolytic cell, BDD electrode module is provided in BDD electrolytic cell, direct current power supply is connected with BDD electrode module, ozone generator is connected with the water inlet pipeline of multiphase flow dissolving gas pump by gas guide pipe, filter is set on water inlet pipeline, the water outlet of multiphase flow dissolving gas pump is connected with the water inlet of reaction chamber, nozzle is connected with the water inlet of reaction chamber, nozzle, support plate, supporting layer, catalyst packing layer, BDD electrolytic cell are sequentially arranged in reaction chamber from bottom to top.

[0009] Preferably, the advanced oxidation treatment device for eutrophication water body management and purification further comprises a stainless steel filter screen, the stainless steel filter screen is arranged between the catalyst packing layer and the BDD electrolytic cell, and a mesh diameter of the stainless steel filter screen is smaller than a diameter of the catalyst.

[0010] Preferably, the reaction chamber is provided with a charging port and a discharging port corresponding to the catalyst packing layer on both sides.

[0011] Preferably, the charging port and the discharging port are both arranged in an inclined manner.

[0012] Preferably, the advanced oxidation treatment device for eutrophication water body management and purification further comprises a multi-channel jet aerator, and the drainage outlet of the reaction chamber is connected with the multi-channel jet aerator.

[0013] Preferably, the advanced oxidation treatment device for eutrophication water body management and purification further comprises a mounting frame, the ozone generator, the multiphase flow dissolving gas pump and the reaction chamber are all arranged on the mounting frame, and the bottom of the mounting frame is provided with universal wheels.

[0014] Preferably, the filter is a Y-shaped filter.

[0015] Preferably, the number of nozzles is multiple, and the multiple nozzles are arranged side by side and at intervals.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the advanced oxidation treatment device for eutrophication water body management and purification has the following beneficial effects: the ozone generator, the multiphase flow dissolving gas pump, the catalyst packing layer and the BDD electrolytic cell are arranged to improve the oxidation rate and the oxidation effect of ozone, efficiently inactivate algal cells and efficiently degrade organic pollutants under the synergistic action of the BDD electrode, ozone micro-nano bubbles and catalyst adsorption and catalysis, and the device avoids drug delivery, is environmentally friendly, and saves the cost of storage, mixing and transportation of reagents. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the senior oxidation treatment device for eutrophication water body treatment and purification of the utility model;

[0019] Figure 2 It is a perspective view of the senior oxidation treatment device for eutrophication water body treatment and purification of the utility model;

[0020] Figure 3 It is a plan view of the senior oxidation treatment device for eutrophication water body treatment and purification of the utility model.

[0021] The figure mark is: 1 ozone generator, 2 gas guide pipe, 3 filter, 4 multi-phase flow dissolving gas pump, 5 nozzle, 6 supporting plate, 7 supporting layer, 8 discharge port, 9 catalyst filling layer, 10 charging port, 11 stainless steel filter screen, 12 BDD electrolytic cell, 12-1 BDD electrode module, 13 direct current power supply, 14 drainage port, 15 multi-channel jet aerator, 16 universal wheel. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] The utility model provides a kind of senior oxidation treatment device for eutrophication water body treatment and purification, including ozone generator 1, reaction chamber, filter 3, multi-phase flow dissolving gas pump 4, nozzle 5, supporting plate 6, supporting layer 7, catalyst filling layer 9, direct current power supply 13 and BDD electrolytic cell 12, BDD electrolytic cell 12 is provided with BDD electrode module 12-1, and direct current power supply 13 is connected with BDD electrode module 12-1.

[0024] Ozone generator 1 is connected with the water inlet pipeline of multi-phase flow dissolving gas pump 4 by gas guide pipe 2, the water inlet pipeline is connected with the inlet flange of multi-phase flow dissolving gas pump 4, filter 3 is arranged on the above water inlet pipeline, and the water outlet of multi-phase flow dissolving gas pump 4 is connected with the water inlet of reaction chamber by pipeline, the reaction chamber is lower water inlet, nozzle 5 is connected with the water inlet of reaction chamber, nozzle 5, supporting plate 6, supporting layer 7, catalyst filling layer 9 and BDD electrolytic cell 12 are sequentially arranged in reaction chamber from bottom to top.

[0025] The gas source of the ozone generator 1 can adopt an air source, and the ozone concentration can be adjusted by replacing the oxygen source or regulating the input gas source amount. The gas guide pipe 2 is a hose, and the material thereof is preferably silica gel. In addition, the multiphase flow dissolved gas pump 4 can be connected in multiple stages according to the water treatment amount requirement. The anode of the BDD electrode module 12-1 is a boron-doped diamond (BDD) electrode; the cathode type can be configured conventionally, and can be selected from a titanium electrode, a platinum electrode, a stainless steel electrode, etc.; the BDD electrode module 12-1 has a plurality of groups, and can be connected in multiple groups according to the water treatment amount requirement; and the current density is 20mA / cm 2 ~ 38mA / cm 2 The ozone generator 1, the multiphase flow dissolved gas pump 4, the BDD electrode module 12-1, etc. of the utility model are all prior art, and will not be described in detail here.

[0026] The filter 3 can be a Y-type filter, which can be arranged at the middle position of the water inlet pipe. The shell material of the Y-type filter can be selected from A3, 304, 304L, 316, 316L, WCB, etc., and the filtering accuracy can be selected from 18-30 meshes / cm 2 In addition, the plurality of nozzles 5 are arranged side by side at intervals, and the nozzles 5 are used to realize gas and liquid injection. The nozzles 5 can adopt existing nozzle devices such as efficiency nozzles, and will not be limited here.

[0027] The supporting plate 6 has appropriate bearing strength and corrosion resistance, and the pore diameter of the supporting plate 6 can be 2-3mm. The supporting layer 7 is used to support the catalyst filler layer 9, and is preferably composed of 10-20mm pebbles. In addition, the catalyst filler layer 9 can select existing catalysts such as granular activated carbon and metal oxides (Al2O3, TiO2, MnO2, etc.).

[0028] Preferably, the utility model further comprises a stainless steel filter screen 11, which is arranged between the catalyst filler layer 9 and the BDD electrolytic cell 12. The mesh diameter of the stainless steel filter screen 11 is smaller than the diameter of the catalyst, and the stainless steel filter screen 11 can prevent the catalyst of the catalyst filler layer 9 from blocking the BDD electrode module 12-1. In addition, the two sides of the reaction chamber are provided with a charging port 10 and a discharging port 8 corresponding to the catalyst filler layer 9. It can be understood that the charging port 10 and the discharging port 8 are respectively used for filling and discharging the catalyst filler layer 9. During operation, the charging port 10 and the discharging port 8 are in a blocked state. Preferably, the charging port 10 and the discharging port 8 are inclined to facilitate the replacement and filling of the catalyst. When the operation is stopped, the catalyst can be replaced through the discharging port 8 and the charging port 10.

[0029] Preferably, the utility model still include multichannel jet aeration 15, the drainage of reaction chamber is connected with multichannel jet aeration 15 through pipeline, and multichannel jet aeration 15 can be placed in water body.

[0030] In addition, preferably, the utility model still can include mounting bracket, above-mentioned ozone generator 1, multiphase flow dissolved air pump 4, reaction chamber are all arranged on mounting bracket to realize the integration of the equipment main body of the utility model, and the bottom of mounting bracket is provided with universal wheel 16 to facilitate moving, the utility model can configure electric control box.

[0031] It can be understood that the utility model is integrated with ozone and electrochemical oxidation, catalyst adsorption, ozone disinfection, can effectively remove algae, algal toxins, ammonia nitrogen, total organic carbon and other pollutants in water, better improve chroma, smell and taste and other water quality sensory indexes, improve water quality, the utility model can be applied to drinking water and other advanced treatment.

[0032] Ozone has the effect of removing algae, and ozone oxidation can cause algae cells to rupture, so that they lose physiological activity and achieve the purpose of killing algae; the ozone nanobubbles generated by the multiphase flow dissolved air pump have a larger specific surface area and a higher mass transfer efficiency, and can more effectively contact and react with algae in the water body to enhance the ozone oxidation capacity. Algae cell rupture releases a large amount of intracellular organic matter, which causes the release of algal toxins and other organic matter while inactivating the algae cells. The main function of the catalyst filler layer 9 is adsorption and activation. When raw water contacts the catalyst, organic pollutants are adsorbed on the surface of the catalyst, forming a surface chelate with affinity, which makes ozone oxidation more efficient; the catalyst can effectively catalyze and activate ozone molecules to decompose free radicals and improve the ozone oxidation efficiency. After ozone contacts with algal toxins and other organic pollutants, it has a decomposition effect on algal toxins and other organic pollutants, and the BDD electrode module 12-1 can generate a large amount of hydroxyl radicals to further rapidly oxidize and degrade organic pollutants; the utility model realizes the degradation of organic pollutants under the combined action of ozone nanobubbles and BDD electrodes, ozone micro-nanobubbles have a sterilization effect, which can reduce the amount of biomass attached to the catalyst, prolong the service life of the catalyst, and reduce the frequency of replacing the catalyst filler layer 9.

[0033] The working process of the advanced oxidation treatment device for eutrophication water treatment and purification is as follows: (1) the multiphase flow dissolving gas pump 4 pumps water and air at the same time, and the ozone prepared by the ozone generator 1 enters the water inlet pipeline through the gas guide pipe 2 through the gas outlet; at the same time, the eutrophication water to be treated passes through the Y-type filter 3, the water inlet pipeline in turn, and the impurities in the water are filtered and then pumped into the multiphase flow dissolving gas pump 4; the ozone gas inlet amount can be determined according to the specific water quality, water quantity and the like, and the ratio range of the ozone micro-nano bubble gas inlet amount and the raw water inlet flow can be 1:7-1:8; the gas-liquid two-phase is pressurized and mixed in the pump cavity of the multiphase flow dissolving gas pump 4 and fully dissolved to generate saturated dissolved gas water, and the ozone micro-nano bubble water is generated after pressure relief, and is discharged into the reaction chamber through the pipeline and is released through the nozzle 5. (2) the water flow direction is upward flow, and sequentially flows through the supporting plate 6, the supporting layer 7, the catalyst filler layer 9 and contacts the BDD electrode module 12-1. The released ozone micro-nano bubbles can generate a large amount of hydroxyl radicals, and the raw water is fully contacted to kill algae; the upward flow can ensure that the catalyst is fully contacted with the water body; the catalyst of the catalyst filler layer 9 further adsorbs the organic pollutants generated by the algae cell rupture to the surface, and catalyzes the ozone to generate free radicals to oxidize the organic pollutants; at the same time, the water to be treated is fully contacted with the BDD electrode module 12-1 in the BDD electrolytic tank 12 for oxidation, a large amount of free radicals are generated by electrolysis of the BDD electrode module 12-1, the oxidation efficiency of the pollutants is improved, and the pollutants are efficiently degraded.

[0034] It can be understood that in the eutrophication water treatment process, the algae cell rupture will generate algal toxins, and the algal toxins will have a large toxic effect, and for this, the ozone micro-nano bubble-BDD electrode process adopted by the utility model is integrated with ozone and electrochemical oxidation, ozone disinfection, can effectively inactivate algae, remove algal toxins, ammonia nitrogen, total organic carbon and other pollutants, improve chroma, smell and taste and other water quality sensory indexes, and improve water quality, and can be applied to water quality purification and advanced treatment. In addition, according to different water quality treatment requirements, the removal efficiency of algae and organic pollutants in the water body can be controlled by adjusting the ozone concentration and the BDD current density.

[0035] Compared with the prior art, the advanced oxidation treatment device for eutrophication water body treatment and purification has the following beneficial effects: (1) the ozone generator, the multiphase flow dissolving gas pump, the catalyst filling layer, the BDD electrolytic tank and the like are arranged, so that the oxidation rate and the oxidation effect of ozone can be improved under the synergistic effect of the BDD electrode, the ozone micro-nano bubbles and the catalyst adsorption and catalysis, the algal cells can be inactivated efficiently, and the organic matter pollutants can be degraded efficiently; (2) the drug feeding is avoided, the environment is friendly, and the storage, mixing and transportation of the medicament and the like are saved; (3) the treatment effect can be flexibly controlled by adjusting the current density, the ozone concentration and the like, so that the treatment requirements under different water quality conditions can be better met; and (4) the utility model is an integrated device, and has the characteristics of small size, simple operation and easy movement.

[0036] It should be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An advanced oxidation treatment device for eutrophication water treatment and purification, comprising an ozone generator, a reaction chamber, a filter, a multiphase flow dissolved air pump, a nozzle, a support plate, a support layer, a catalyst packing layer, a direct current power supply and a BDD electrolytic cell, wherein a BDD electrode module is arranged in the BDD electrolytic cell, and the direct current power supply is connected with the BDD electrode module, characterized in that: the ozone generator is connected with a water inlet pipeline of the multiphase flow dissolved air pump through a gas guide pipe, the filter is arranged on the water inlet pipeline, a water outlet of the multiphase flow dissolved air pump is connected with a water inlet of the reaction chamber, the nozzle is connected with the water inlet of the reaction chamber, and the nozzle, the support plate, the support layer, the catalyst packing layer and the BDD electrolytic cell are sequentially arranged in the reaction chamber from bottom to top. A stainless steel filter screen is further arranged between the catalyst packing layer and the BDD electrolytic cell, and a mesh diameter of the stainless steel filter screen is smaller than a diameter of the catalyst.

2. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: Charging ports and discharging ports are arranged on both sides of the reaction chamber corresponding to the catalyst packing layer.

3. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: The charging ports and the discharging ports are both arranged in an inclined manner.

4. The advanced oxidation device for the treatment of eutrophic water according to claim 3, wherein: A multi-channel jet aerator is further arranged, and a water outlet of the reaction chamber is connected with the multi-channel jet aerator.

5. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: A mounting frame is further arranged, and the ozone generator, the multiphase flow dissolved air pump and the reaction chamber are arranged on the mounting frame, and universal wheels are arranged at a bottom of the mounting frame.

6. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: The filter is a Y-shaped filter.

7. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: A plurality of nozzles are arranged side by side and at intervals.

8. The advanced oxidation processing device for the treatment and purification of eutrophic water bodies according to claim 1, characterized in that: 2.

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