CN215102170U - Combined restoration device for surface sewage - Google Patents

Abstract

The application discloses prosthetic devices is united to surface sewage, unites prosthetic devices includes: a pulse power supply, an electrolytic treatment unit and an ultrasonic unit; the electrolysis processing unit is provided with an electrode assembly connected with a pulse power supply, and the electrode assembly comprises an electrolysis cathode and an electrolysis anode; the ultrasonic unit comprises an ultrasonic generator and a transducer, and the ultrasonic generator is electrically connected with the transducer; the electrolytic anode and the electrolytic cathode are respectively coupled with the transducer to be used as an ultrasonic vibrator of the ultrasonic generator, so that the cavitation effect is continuously generated on the surfaces of the electrolytic anode and the electrolytic cathode. This application adopts electrolysis electrode and ultrasonic purification's principle, and the electrolysis receives the organic pollutant in the dirty water, and electrode and transducer coupling remove the electrode surface stained as the ultrasonic vibrator of ultrasonic generator simultaneously, improve electrolysis efficiency, solve river lake surface water regional pollution and point source pollution problem timely, high-efficient and conveniently, stop the water and take place nutrient secondary pollution, ensure the long-term stable safety of river lake surface water.

Description

Combined restoration device for surface sewage

Technical Field

The application relates to the technical field of water pollution treatment, in particular to a combined repairing device for repairing polluted surface water.

Background

Although various water pollution treatment and restoration laws, regulations, guidelines and the like at all levels at present correspondingly stipulate and regulate surface water pollution and emission limit values, direct discharge or leakage of daily-life sewage/wastewater can directly pollute surface water such as rivers and lakes and the like, so that the water body is easy to become rotten and smelly, plankton such as algae and the like grow in a large quantity, and the daily life of surrounding residents is influenced, so that the problem of solving/controlling the algal bloom and black smell of the water body is always a concern of common people.

At present, the phenomenon that domestic sewage/wastewater in backward rural areas of China is directly discharged into rivers and lakes still often occurs, and even urban biological sewage seepage problems are prominent due to construction or long-term overhaul of sewer pipelines and the like in cities (particularly ancient cities), so that water pollution of rivers and lakes is caused, and organic matters and nutrients in water are enriched. At present, the surface water restoration technology of domestic conventional riverways, lakes and the like comprises conventional means such as physics, chemistry, biology and the like, for example, 1) the physical water adjusting and changing technology has the disadvantages of huge construction engineering quantity and high technology implementation cost, raw water of rivers and lakes is diffused under the action of water diversion and flushing, the surface water close to and low in pollution level or pollution-free at the downstream is easy to pollute, and meanwhile, sediments can be resuspended due to scouring in the water adjusting and changing process, so that nutrients are released, and the water body is subjected to the risk of secondary pollution of the nutrients; 2) although the addition of the chemical algae killer and the coagulant can quickly obtain obvious treatment effect in a short time, the treatment only transfers pollution but not completely removes the pollution, so secondary pollution is possibly generated, a new ecological problem is caused, and the high treatment cost is difficult to popularize in an engineering way; 3) by means of the biological ecological restoration technology of the artificial/natural ecological floating island, pollutants and nutrients in water can be reduced by means of microbial biochemical degradation and absorption, transfer or root system filtration, adsorption and the like of aquatic plants, the potential risk of secondary pollution can be effectively avoided, the influence of the surrounding environment is easy, the construction and operation maintenance conditions are harsh, and the defects of long period and slow effect in the treatment process are only used in a small-range area. Therefore, treatment and restoration of surface water pollution of rivers, lakes and the like are complex system engineering, and rapid and convenient treatment processes and equipment suitable for the current water pollution situation of China are urgently needed to be developed.

Disclosure of Invention

The method aims to solve the problems that the implementation cost of the prior art is high, a water body is easy to face secondary nutrient pollution, the construction and operation maintenance conditions are harsh, the treatment process is long and takes effect slowly.

In order to achieve the purpose, the technical scheme is as follows: a combined remediation device for surface sewage, comprising:

a pulse power supply;

at least one electrolytic processing unit having an electrode assembly connected to the pulse power source, the electrode assembly including an electrolytic cathode and an electrolytic anode;

an ultrasound unit comprising an ultrasound generator and at least one pair of transducers electrically coupled to the ultrasound generator; wherein at least one pair of the transducers are respectively coupled with the electrolysis anode and the electrolysis cathode to form an ultrasonic vibrator of the ultrasonic generator, so that the cavitation effect is continuously generated on the surfaces of the electrolysis anode and the electrolysis cathode.

Preferably, the material of the electrolytic anode is graphite carbon-based rhodium/iridium coating electrode or metal titanium-based rhodium/iridium coating electrode.

Preferably, the electrolytic cathode is a metallic iron electrode or a metallic copper electrode.

Preferably, the electrode assembly comprises a plurality of the electrolysis anodes and the electrolysis cathodes, and the plurality of the electrolysis anodes and the electrolysis cathodes are respectively and alternately arranged to form a uniform electric field.

Preferably, a plurality of said electrolytic anodes and electrolytic cathodes are arranged in concentric circles or semi-circles, and said electrode assembly further comprises a central anode located at the center of said circle or semi-circle.

Preferably, the electrolytic anode and the electrolytic cathode both have a net structure, and the central anode has a solid semi-cylindrical structure.

Preferably, the scanning frequency of the ultrasonic generator is 20-100 kHZ.

Preferably, the plurality of electrolysis anodes are connected to the anode of the pulse power supply through a plurality of wires, and the plurality of electrolysis cathodes are connected to the cathode of the pulse power supply through a plurality of wires.

Preferably, the repairing device further comprises an aeration unit, wherein the aeration unit comprises an air compressor and a plurality of aeration heads connected with the air compressor.

Preferably, the electrolytic processing unit further comprises a filter housing wrapped outside the electrode assembly, the filter housing having a metal mesh and a sponge, the metal mesh forming a faraday cage for the electrode assembly inside.

Compared with the prior art, the application has the following beneficial effects:

this application adopts electrolysis electrode and ultrasonic purification's principle, organic pollutant electrolysis in the contaminated water body, simultaneously because electrolysis positive pole and electrolysis negative pole are coupled with the transducer and are regarded as the ultrasonic oscillator of ultrasonic generator, consequently can form cavitation effect on the electrode surface, in time get rid of the electrode surface and stained, thereby improve electrolysis efficiency, further improve the oxidation effect of water, solve the concentration polarization problem that electrode subassembly produced because of the electrolysis, the water dissolved oxygen concentration has been improved when reducing the pollutant concentration in aqueous, in time, the regional pollution problem of river lake surface water and point source pollution problem have been solved high-efficiently and conveniently, stop the water and take place nutrient secondary pollution, the quick promotion of river lake surface water quality of water has been realized, and further guarantee the long-term stable safety of river lake surface water.

Drawings

FIG. 1 is a schematic structural diagram of the present application (excluding a pulse power supply);

FIG. 2 is a schematic flow chart of the present application;

FIG. 3 is a front view of the electrolytic processing unit of the present application;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view of the parallel connection of the electrodes of the electrode assembly of the present application;

FIG. 6 is a schematic illustration of the position of the electrolytic processing unit of the present application in parallel in a regionally contaminated water body;

FIG. 7 is a schematic illustration of the location of an electrolytic processing unit of the present application in a single point-of-use installation in a point source contaminated body of water.

Detailed Description

To explain the technical content, the structural features, the achieved objects and the functions of the application in detail, the technical solutions in the embodiments of the application will be described below with reference to the drawings in the embodiments of the application, and it is obvious that the described embodiments are only a part of the embodiments of the application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

In the description of the present application, "a plurality" means two or more unless otherwise specified.

Furthermore, spatially relative terms, such as "lower", "upper", and the like, may be used herein to describe one element's relationship to another (or other) element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.

The application provides a prosthetic devices is united to surface sewage, as shown in fig. 1~7, this unite prosthetic devices including pulse generator 1, the electrolytic treatment unit 2 and the supersound unit 3 of electrolytic oxidation pollutant that are used for the power supply. The combined restoration device is suitable for restoring polluted water flow of surface water quality reduction of rivers, lakes and the like caused by zone/point source pollution.

The pulse power supply 1 can be a high-voltage direct-current pulse power supply.

As shown in FIGS. 2 to 4, the electrolytic processing unit 2 includes an electrode assembly 21 connected to the pulse power source 1. The electrode assembly 21 includes at least an electrolytic anode 213 and an electrolytic cathode 212. The electrolytic anode 213 is connected to the anode of the pulse power supply 1 via a wire, and the electrolytic cathode 212 is connected to the cathode of the pulse power supply 1.

In one embodiment, the electrode assembly 21 may include one or more pairs of electrolytic anodes 213 and electrolytic cathodes 212. The electrode assembly 21 may form electric fields of different shapes and different strengths according to the number and arrangement of the electrolysis anodes 213 and the electrolysis cathodes 212.

The electrolytic anode 213 may be a graphite carbon-based rhodium/iridium coated electrode or a metal titanium-based rhodium/iridium coated electrode. In one embodiment, the electrolytic anode 213 is fabricated as a mesh structure, specifically a mesh graphitic carbon-based rhodium/iridium coated electrode. The mesh density of the net is 5-32 meshes, and the diameter of the mesh wires forming the net is about 0.5-1.0 mm. The reason for this is that, when the ultrasonic electrolysis combined purification is performed, the electrolysis anode 213 works as an ultrasonic vibrator, when the electrode diameter is larger than 1.5mm, the anode material is easily peeled off, and when the mesh diameter satisfies 0.5-1.0 mm, the electrolysis anode 213 can stably work, and under the action of the ultrasonic unit 3, the cavitation effect is continuously generated on the surface of the electrolysis anode 213, the stain attached to the surface of the electrolysis anode 213 in the electrolysis process is removed, and further the anodic oxidation effect is improved, so that the electrolysis efficiency is improved.

The electrolytic cathode 212 may be a metal electrode, such as iron, copper, or other inexpensive materials. In one embodiment, the electrolytic cathode 212 is also fabricated as a mesh structure. The mesh density is 2-16 meshes, and the aperture is 1-8 mm. The electrolytic cathode 212 can work stably, and under the action of the ultrasonic unit 3, a cavitation effect can be continuously generated on the surface of the electrolytic cathode 212, so that the stains attached to the surface of the electrolytic cathode 212 in the electrolytic process are removed, the cathode oxidation effect is further improved, and the electrolytic efficiency is improved.

The arrangement of the electrolysis cathode 212 and the electrode anode 213 may be various, as long as a uniform and stable electric field can be formed, such as a parallel electric field, a rectangular electric field, etc. In this embodiment, the electrolytic processing unit 2 has a circular or semicircular shape, and the electrode assembly 21 further includes a chemically stable central anode 211, and the central anode 211 is made of an electrode material such as a graphite carbon-based rhodium/iridium coated electrode or a metallic titanium-based rhodium/iridium coated electrode. In one embodiment, the central anode is a solid semi-cylindrical graphitic carbon-based rhodium/iridium-coated electrode. The central anode 211 is located at the center of the circle or the semicircle, and the plurality of electrolytic cathodes 212 and electrolytic anodes 213 are concentrically arranged around the central anode 211 in the circle or the semicircle and are alternately arranged from inside to outside in sequence to form a stable electric field.

When the central anode 211 is connected to the pulse power supply 1, the central anode 211 is the initiation electrode of the electrolysis anode 213, and stably and indiscriminately oxidizes pollutants, thereby achieving the function of stabilizing the electrode voltage and the pulse frequency. When the electrolytic cathode 212 is connected with the pulse power supply 1, the electrolytic cathode 212 forms hydrogen peroxide under the combined action of electrons, oxygen and water and is cracked into strong oxidation free radicals, so that organic pollutants in the polluted water flow are catalyzed and oxidized. When the electrolysis anode 213 is connected with the pulse power supply 1, a stable anode is formed, and the electrolysis anode 213 can not selectively oxidize the organic pollutants in the polluted water flow.

The electrolytic treatment unit 2 further comprises a filter cover 22 wrapped outside the electrode assembly 21, the filter cover 22 is provided with a metal net 221 and a sponge 222, the sponge 222 is wrapped outside the electrode assembly 21, on one hand, noise generated by equipment can be isolated and absorbed to reduce noise damage of aquatic animals, and on the other hand, the sponge 222 can also filter particulate matters in a water body; the metal mesh 221 is wrapped on the outer side of the electrode assembly 21 along the circumferential direction, a Faraday cage is formed on the electrode assembly 21 on the inner side, an electric field formed by the electrode assembly 21 is isolated on the inner side of the metal mesh, and electromagnetic radiation pollution in water is reduced. The filter housing 22 can also isolate floating or floating impurities around the electrode assembly 21, thereby preventing the floating impurities from causing a short circuit between the electrodes.

As shown in FIGS. 1 and 2, the ultrasonic unit 3 comprises an ultrasonic generator 31 and a pair of transducers electrically connected with the ultrasonic generator 31, the ultrasonic generator 31 is selected from a device with a scanning frequency of 20-100 kHZ, preferably, the ultrasonic generator 31 has a scanning frequency of 50-90 kHZ and a power of 800-1500 kW. A pair of transducers are coupled to electrolytic cathode 212 and electrolytic anode 213, respectively, to form the ultrasonic vibrator of ultrasonic generator 31, and the transducers convert electrical energy into vibrational energy to drive electrolytic cathode 212 and electrolytic anode 213 to vibrate, so that cavitation continues to occur at the surfaces of electrolytic cathode 212 and electrolytic anode 213. The vibration of the electrolytic cathode 212 and the electrolytic anode 213 causes the formation of a high temperature, high pressure, and cavitation zone having high shear force and strong oxidizing radicals around the processing electrode assembly 21; the algae in the polluted water flow withers and dies under the high-temperature, high-pressure and high-speed shearing force and strong oxidation free radicals in the vacuole area, so that the aim of reducing the quantity of the algae is fulfilled, meanwhile, the organic pollutants in the polluted water flow are indiscriminately removed, and the aim of reducing the concentration of the organic pollutants in the polluted water flow is fulfilled.

The combined remediation device further comprises a group of aeration units 4, wherein each aeration unit 4 comprises an air compressor 42 and a plurality of aeration heads 41 connected with the air compressor 42; a plurality of aeration heads 41 are immersed in the contaminated water stream, and at least one aeration head 41 is close to the electrode assembly 21; the air compressor 42 supplies oxygen to the aeration head 41 to stir polluted water flow and supply oxygen to the periphery of the electrode assembly 21, so that the problem of concentration polarization of the electrode assembly 21 caused by electrolysis is solved, the electrolysis efficiency of the electrode is improved, the contact interface area between a strong oxidation group formed by catalysis and oxidation and pollutants is increased, the concentration of pollutants in water is effectively reduced, the water quality of surface water such as riverways and lakes can be improved, the outbreak of water bloom is slowed down or controlled (even solved), and the additional value of a water body is improved.

The combined restoration device of the embodiment is placed in sewage to be purified, the distance from the lower end of an electrode assembly 21 to the bottom of the water is 30-50 cm, and the upper end of a filter cover 22 is 3-5 cm higher than the water surface of the sewage; the portion of the filter housing 22 above the water surface serves to block impurities floating on the water surface from flowing into the electrode assembly 21.

As shown in fig. 5, the electrolysis cathodes 212 and the electrolysis anodes 213 of the electrode assembly 21 are connected in parallel in such a manner that: the plurality of electrolysis anodes 213 are connected to the anode of the pulse power supply 1 through a plurality of wires, and the plurality of electrolysis cathodes 212 are connected to the cathode of the pulse power supply 1 through a plurality of wires.

As shown in fig. 6, when the electrolytic processing unit 2 encounters regional pollution, the plurality of circular electrolytic processing units 2 are respectively installed at the downstream of the polluted water flow, the electrode assemblies 21 of the electrolytic processing units 2 are connected to the pulse power supply 1 in parallel, the polluted water flows through the electrolytic processing unit 2 when flowing downstream, and the electrolytic processing unit 2 repairs the polluted water flow regionally.

As shown in fig. 7, when the electrolytic processing unit 2 encounters point source pollution, the plurality of semicircular electrolytic processing units 2 are sequentially installed at a plurality of pollution leakage points 5 along the bank of the river or lake, and the electrode assemblies 21 of the plurality of electrolytic processing units 2 are subjected to single-point location and then connected to the pulse power supply 1, so that polluted water flowing out of the pollution leakage points 5 flows through the electrolytic processing unit 2, and the electrolytic processing unit 2 performs point-to-point water body remediation on the pollution leakage points 5.

As shown in table 1, compared with the conventional repair process scheme at the present stage, the electrolytic treatment unit 2 and the ultrasonic unit 3 are operated in combination, so that the treatment efficiency of polluted river/lake pollution can be greatly improved, and simultaneously, compared with the ecological floating island, on the premise of slightly increasing the operation and maintenance cost, the generation cost and the labor assembly cost of the device are saved, the voltage time and the potential of the pulse power supply 1 are changed according to the actual water quality, the cycle period and the frequency interval of the ultrasonic unit 3 are adjusted, so that the organic pollutants in water can be effectively reduced and the algae amount in raw water can be removed by the device, the effluent treated by the technology of the application can meet the requirements of IV-V water quality in the water environment quality standard of the people's republic of China (GB 3838-2002), and the treatment ranges of pH, permanganate index, COD, BOD, ammonia nitrogen, TP, SS and the like of the water body are remarkably expanded, effectively solves the problem of water quality reduction of surface water of rivers, lakes and the like caused by zone/point source pollution, and simultaneously improves the DO index obviously.

TABLE 1

This application adopts electrolysis electrode and ultrasonic purification's principle, organic pollutant electrolysis in the contaminated water body, simultaneously because electrolysis anode 213 and electrolysis cathode 212 are coupled with the transducer and are regarded as the ultrasonic oscillator of ultrasonic generator 31, consequently can form cavitation effect on the electrode surface, in time get rid of the electrode surface and be stained, thereby improve electrolysis efficiency, further improve the oxidation effect of water, solve electrode subassembly 21 because of the concentration polarization problem that the electrolysis produced, the water dissolved oxygen concentration has been improved when reducing the pollutant in aquatic concentration, in time, high-efficient and conveniently solved the regional pollution of river lake surface water and some source pollution problems, stop the water and take place nutrient secondary pollution, the quick promotion of river lake surface water quality of water has been realized, and further guarantee the long-term stable safety of river lake surface water.

The foregoing shows and describes the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the application, and that various changes and modifications may be made without departing from the spirit and scope of the application, which is defined by the appended claims, the specification, and equivalents thereof.

Claims (10)

1. The combined remediation device for surface sewage is characterized by comprising:

a pulse power supply (1);

at least one electrolytic processing unit (2) having an electrode assembly (21) connected to the pulse power source (1), the electrode assembly (21) including an electrolytic cathode (212) and an electrolytic anode (213);

an ultrasound unit (3) comprising an ultrasound generator (31) and at least one pair of transducers electrically coupled to the ultrasound generator (31); wherein the content of the first and second substances,

at least one pair of the transducers are respectively coupled with the electrolytic anode (213) and the electrolytic cathode (212) to form an ultrasonic vibrator of the ultrasonic generator (31), so that the cavitation effect continuously occurs on the surfaces of the electrolytic anode (213) and the electrolytic cathode (212).

2. The combined remediation device of claim 1, wherein the material of the electrolysis anode (213) is selected from a graphite carbon-based rhodium/iridium coated electrode or a metallic titanium-based rhodium/iridium coated electrode.

3. The combined remediation device of claim 1, wherein the electrolysis cathode (212) is a metallic iron electrode or a metallic copper electrode.

4. The combined remediation device of claim 1, wherein the electrode assembly (21) comprises a plurality of said electrolysis anodes (213) and electrolysis cathodes (212), and the plurality of said electrolysis anodes (213) and electrolysis cathodes (212) are alternately arranged to form a uniform electric field.

5. A combined remediation device for sewage according to claim 4 characterised in that a plurality of said electrolysis anodes (213) and electrolysis cathodes (212) are arranged in concentric circles or semi-circles and said electrode assembly (21) further comprises a central anode (211), said central anode (211) being located at the centre of said circle or semi-circle.

6. The combined remediation device of claim 5, wherein the electrolysis anode (213) and the electrolysis cathode (212) each have a mesh structure, and the central anode (211) has a solid semi-cylindrical structure.

7. The combined remediation device of claim 1, wherein the sweep frequency of the ultrasonic generator (31) is 20-100 kHZ.

8. A combined remediation device for surface sewage according to claim 4, wherein a plurality of said electrolysis anodes (213) are connected to the anode of said pulsed power supply (1) by a plurality of wires, respectively, and a plurality of said electrolysis cathodes (212) are connected to the cathode of said pulsed power supply (1) by a plurality of wires, respectively.

9. A combined remediation device for surface wastewater according to claim 1, further comprising an aeration unit (4) comprising an air compressor (42) and a plurality of aeration heads (41) connected to the air compressor (42).

10. A combined remediation device for surface sewage according to claim 1 wherein the electrolytic treatment unit (2) further comprises a filter housing (22) wrapped around the outside of the electrode assembly (21), the filter housing (22) having a metal mesh (221) and a sponge (222), the metal mesh (221) forming a faraday cage against the inside of the electrode assembly (21).

Images