An anti-damping ultrasonic underground water circulation well system

Abstract

The application discloses an anti-attenuation ultrasonic underground water circulating well system, which comprises a circulating well body internally provided with a cavity, a shunt bin is arranged in the cavity, and a feeding port and a shunt port are arranged at opposite upper and lower ends of the shunt bin along the height direction respectively; an installation base is arranged opposite to the lower end of the shunt bin; an ultrasonic water passing bin parallel to the height direction is arranged on the installation base, a side wall of the opposite upper end of the ultrasonic water passing bin is communicated with an inlet, and the inlet is communicated with the shunt port through a shunt pipe; an ultrasonic transducer for emitting ultrasonic waves into the ultrasonic water passing bin is arranged on the installation base, and incident waves and reflected waves of the ultrasonic waves in the ultrasonic water passing bin are superposed to form standing waves; the feeding port is communicated with a medicine injection assembly; the feeding port is communicated with a water pumping and injecting assembly, and the other end of the water pumping and injecting assembly is used for sucking contaminated underground water. The application improves the anti-attenuation capability of the ultrasonic waves based on the standing wave forming mode, ensures efficient repair of organic contaminated underground water, and does not additionally increase the power of the ultrasonic transducer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of in-situ remediation of groundwater pollution, and particularly relates to an anti-degradation ultrasonic groundwater circulation well system. BACKGROUND

[0002] The groundwater circulation well technology is an in-situ remediation technology that can remove pollutants in groundwater and saturated soil. The groundwater circulation well technology has good application prospects due to its low selectivity to pollutants, but also has the following defects: first, the slow diffusion of remediation agents and uneven mixing with pollutants, repeated addition of agents enhances corrosion, and the service life of the circulation well equipment is greatly reduced; second, the poor performance of remediation agents in the poor-oxygen and low-temperature underground environment. With the continuous progress of technology, a new water treatment technology has emerged in recent years, which is the ultrasonic groundwater circulation well technology obtained by applying ultrasonic technology to the groundwater circulation well. The ultrasonic groundwater circulation well technology activates and strengthens the remediation agents by emitting ultrasonic waves with a frequency greater than 16 kHz, and mixes the remediation agents with groundwater pollutants to achieve remediation of organic contaminated groundwater.

[0003] However, the current ultrasonic groundwater circulation well technology still has the following defects in application: the ultrasonic wave in the groundwater circulation well has weak anti-degradation ability, which is not conducive to the role of ultrasonic waves and has poor activation and strengthening effect on the remediation agents, resulting in poor degradation effect of organic pollutants in groundwater. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defects of the existing ultrasonic groundwater circulation technology, such as weak ultrasonic wave anti-degradation ability, which is not conducive to the role of ultrasonic waves and has poor activation and strengthening effect on the remediation agents, resulting in poor degradation effect of organic pollutants in groundwater, so as to provide an anti-degradation ultrasonic groundwater circulation well system.

[0005] According to the anti-degradation ultrasonic groundwater circulation well system provided by the present application, the anti-degradation ultrasonic groundwater circulation well system comprises a circulation well body, a cavity is arranged in the circulation well body,

[0006] A shunt bin is arranged in the cavity, and an inlet and a shunt port are arranged at the relative upper end and the relative lower end of the shunt bin along the height direction, respectively, and the inlet and the shunt port are both communicated with the inner cavity of the shunt bin;

[0007] A mounting base is arranged below the shunt bin along the height direction;

[0008] An ultrasonic water passing bin is arranged on the mounting base parallel to the height direction, and an inlet is communicated with the side wall of the relative upper end of the ultrasonic water passing bin along the height direction, and the inlet is communicated with the shunt port through a shunt pipe;

[0009] An ultrasonic transducer is arranged on the mounting base and located in the ultrasonic water passing chamber, and the ultrasonic transducer is used to emit ultrasonic waves into the ultrasonic water passing chamber, and the incident waves and reflected waves of the ultrasonic waves in the ultrasonic water passing chamber overlap to form a standing wave;

[0010] A medicine injection assembly is in communication with the feed inlet and used to inject the remediation medicine into the distribution chamber;

[0011] A water suction and injection assembly is in communication with the feed inlet at one end and used to suck the contaminated groundwater at the other end.

[0012] The anti-attenuation ultrasonic groundwater circulating well system according to the present application has at least the following technical effects:

[0013] 1. By simultaneously communicating the medicine injection end of the medicine injection assembly and the water outlet end of the water suction and injection assembly with the feed inlet of the distribution chamber, and communicating the distribution opening of the distribution chamber with the ultrasonic water passing chamber through the distribution pipe, the remediation medicine is injected into the distribution chamber from the feed inlet by the medicine injection assembly while the contaminated groundwater is injected into the distribution chamber from the feed inlet by the water suction and injection assembly, so that the remediation medicine and the contaminated groundwater are initially mixed in the distribution chamber, and then enter the ultrasonic water passing chamber. Because the ultrasonic transducer emits ultrasonic waves into the ultrasonic water passing chamber, the remediation medicine and the contaminated groundwater can be secondarily mixed under the linear high-frequency mechanical vibration of the ultrasonic waves during flowing through the ultrasonic water passing chamber. At the same time, the ultrasonic waves in the ultrasonic water passing chamber cause intense and rapid vibration, which on the one hand accelerates the volatilization of organic pollutants and the rupture of main chain carbon bonds in the oxygen-poor environment of the groundwater, improves the oxygen dissolution speed, promotes the "aqueous phase combustion" of organic matter, and provides ultrasonic cavitation original gas nuclei at the same time; on the other hand, the vibration energy and the instantaneous high temperature and high pressure formed by the cavitation micro-jet and shock wave in the sound field region provide energy for the generation of active substances such as ·OH and H2O2 and the activation and strengthening of the remediation reagent, which well overcomes the defects of low groundwater temperature and oxygen-poor environment, so as to efficiently remediate the organic contaminated groundwater.

[0014] 2. The incident waves and reflected waves of the ultrasonic waves emitted by the ultrasonic transducer into the ultrasonic water passing chamber overlap to form a standing wave with enhanced amplitude, which actively reduces the attenuation of the ultrasonic waves and improves the anti-attenuation ability of the ultrasonic waves without additionally increasing the power of the ultrasonic transducer, which is beneficial to the function of the ultrasonic waves and has good activation and strengthening effect on the remediation medicine, and ensures efficient remediation of the organic contaminated groundwater. Moreover, the way of reducing the attenuation of the ultrasonic waves in the present groundwater circulating well system does not increase additional power consumption, which conforms to the principles of high efficiency, green and low carbon.

[0015] 3. The relative upper end of the ultrasonic water tank is connected with an inlet on the side wall in the height direction, and the ultrasonic transducer is arranged in the relative lower end of the ultrasonic water tank in the height direction, so that the contaminated groundwater flowing out of the shunt tank flows into the relative upper end of the ultrasonic water tank (i.e. the tail end of the ultrasonic water tank) and flows out of the relative lower end of the ultrasonic water tank (i.e. the head end of the ultrasonic water tank) in the height direction, so that the flow direction of the contaminated groundwater in the ultrasonic water tank is opposite to the ultrasonic wave emission direction in the ultrasonic water tank; according to the Doppler effect, when the ultrasonic wave and the receptor (contaminated groundwater) approach each other, the receiving frequency of the receptor will increase. Therefore, the contaminated groundwater flowing in the reverse direction in the ultrasonic water tank gradually increases and uniformly changes in frequency, and the effect is better, further improving the effect of repairing organic contaminated groundwater.

[0016] 4. The high-frequency mechanical vibration of the ultrasonic wave in the ultrasonic water tank bombards the water inlet hole, the water outlet hole and the flow path of the circulating well system, which can prevent accumulation and sedimentation and promote the decomposition of existing blockages into small particles, automatically clean the circulating well blockage and prolong the service life of the circulating well system.

[0017] Preferably, a plurality of shunt ports are provided, the number of the ultrasonic water tanks is equal to the number of the shunt ports, the inlet of each ultrasonic water tank is connected with one shunt port through one shunt pipe, and one ultrasonic transducer is arranged in each ultrasonic water tank.

[0018] Preferably, the starting point of the reflected wave of the ultrasonic wave in the ultrasonic water tank is located at an integer multiple position of the half wavelength of the ultrasonic wave.

[0019] Preferably, the ultrasonic transducer is fixedly connected to the relative upper end surface of the mounting base in the height direction, the ultrasonic water tank is slidingly connected to the relative upper end surface of the mounting base in the height direction, and the ultrasonic water tank has a stable state after being adjusted in the height direction.

[0020] Preferably, a plurality of elastic clamping blocks are arranged on the outer circumferential surface of the ultrasonic water tank in a circumferential direction, and the elastic clamping blocks are arranged parallel to the height direction; the relative upper end surface of the mounting base is provided with clamping grooves corresponding to the positions of the elastic clamping blocks, and the clamping grooves are matched with the elastic clamping blocks; when the ultrasonic water tank is adjusted in the height direction, the elastic clamping blocks are pressed to be separated from the clamping grooves.

[0021] Preferably, a water outlet is arranged on the relative lower end surface of the ultrasonic water tank in the height direction, the water outlet communicates with the inner cavity of the ultrasonic water tank, and the aperture of the water outlet is smaller than the inner diameter of the inner cavity of the ultrasonic water tank.

[0022] Preferably, the water outlet is provided with a plug body in interference fit; the inlet of the ultrasonic water passing chamber is communicated with the connecting end of the shunt pipe with a booster chamber, the booster chamber is arranged in parallel to the height direction, and the lower end of the booster chamber in the height direction is communicated with the inlet.

[0023] Preferably, a packer is arranged in the cavity, the packer is used to divide the cavity into an upper cavity and a lower cavity from top to bottom along the height direction; the shunt chamber and the mounting base are arranged in the upper cavity, one end of the water injection and extraction assembly away from the inlet extends into the lower cavity; the upper cavity is provided with an upper screen pipe, the upper screen pipe is used for the underground water to flow in and out of the upper cavity through the upper screen pipe; the lower cavity is provided with a lower screen pipe, the lower screen pipe is used for the underground water to flow in and out of the lower cavity through the lower screen pipe.

[0024] Preferably, the upper end of the packer in the height direction is provided with a magnet, the plug body comprises a rubber part and a magnetic plug cap arranged at one end of the rubber part in the height direction, and the rubber part is in interference fit in the water outlet;

[0025] And / or, the water injection and extraction assembly comprises a water injection and extraction pipe penetrating through the packer in the height direction, one end of the water injection and extraction pipe is communicated with the lower cavity, the other end of the water injection and extraction pipe is communicated with the inlet, and a water injection and extraction pump is arranged on the water injection and extraction pipe;

[0026] And / or, the medicine injection assembly comprises a medicine tank for storing a repair medicine and a medicine injection pipe communicated with the medicine tank and the inlet, and a medicine injection pump is arranged on the medicine injection pipe.

[0027] Preferably, the lower end of the shunt chamber in the height direction is provided with a connecting cover, the shunt port and the ultrasonic water passing chamber are arranged in the connecting cover; and the connecting cover is detachably connected to the upper end surface of the mounting base in the height direction.

[0028] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0030] Figure 1 It is a front view structural schematic diagram of an anti-attenuation ultrasonic underground water circulation well system.

[0031] Figure 2 is Figure 1 enlarged view of A in the middle;

[0032] Figure 3 is a perspective structural schematic view of an embodiment of the present application;

[0033] Figure 4 is a perspective structural schematic view of part of the structure of an embodiment of the present application;

[0034] Figure 5 is a structural schematic view of the assembly of the ultrasonic water passing chamber and the pressurizing chamber in an embodiment of the present application;

[0035] Figure 6 is Figure 5 a perspective structural schematic view of a cross section.

[0036] Explanation of reference signs:

[0037] 1-gas treatment room, 2-pump, 3-chemical tank, 4-chemical injection pump, 5-water injection and extraction pump, 6-water injection and extraction pipe, 7-gas collection cover, 8-chemical injection pipe, 9-shunt chamber, 10-shunt opening, 11-shunt pipe, 12-elastic clamping block, 13-pressurizing chamber, 14-connection cover, 15-ultrasonic water passing chamber, 16-ultrasonic transducer, 17-magnetic plug cap, 18-mounting base, 19-fixing bolt, 20-plug body, 21-upper cavity, 22-upper screen pipe, 23-circulation well body, 24-packer, 25-lower cavity, 26-lower screen pipe, 27-inlet, 28-outlet pipe, 29-horizontal plate, 30-water outlet. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict between them.

[0042] The treatment of groundwater organic pollutants by the ultrasonic groundwater circulation well system using the ultrasonic groundwater circulation well technology is a dynamic process. On the spatial scale, the types and concentrations of groundwater organic pollutants are not only different at different remediation sites, but also different at different remediation points of the same site; on the time scale, the types and concentrations of groundwater organic pollutants are different at different remediation stages, the types of pollutants are more and the concentrations are higher in the early stage of remediation, and the types of pollutants are relatively less and the concentrations are relatively lower in the later stage of remediation. The types and concentrations of pollutants have a great influence on the attenuation of ultrasonic waves, and the specific influencing factors include density, frequency, wave speed, temperature, viscosity, impurity content, fluidity, etc. The attenuation ability of ultrasonic waves in the medium is represented by the attenuation coefficient α, and the calculation formula is α = 8π 2 f 2 ηgh / 2pc 3 , where η is the medium viscosity coefficient, f is the frequency, p is the medium pressure, c is the wave speed, h is the elevation, and g is the acceleration of gravity. According to the attenuation coefficient formula, the liquid medium attenuation coefficient α is proportional to the viscosity coefficient and the square of the frequency, and inversely proportional to the medium pressure and the cube of the wave speed. The greater the attenuation coefficient, the faster the attenuation speed of ultrasonic waves in the groundwater. For example, different types and contents of organic pollutants will change the viscosity coefficient of groundwater; the pumping and injection speed of the circulation well will change the groundwater pressure in the well; different remediation depths of the site will change the groundwater pressure. These changes are the potential reasons for the attenuation of ultrasonic waves, which will directly or indirectly affect the remediation effect of ultrasonic circulation well. Therefore, it is of great significance to reduce the attenuation speed and degree of ultrasonic waves in the circulation well.

[0043] As Figure 1 and Figure 2The anti-attenuation ultrasonic underground water circulating well system provided by the embodiment comprises a circulating well body 23 provided with a cavity, a shunt bin 9 is arranged in the cavity, a feeding port and a shunt port 10 are respectively arranged at the relatively upper end and the relatively lower end of the shunt bin 9 along the height direction, and the feeding port and the shunt port 10 are both communicated with the inner cavity of the shunt bin 9; a mounting base 18 is arranged at the relatively lower side of the shunt bin 9 along the height direction; an ultrasonic water passing bin 15 is arranged at the relatively upper end of the mounting base 18 along the height direction, the ultrasonic water passing bin 15 is arranged parallel to the height direction, an inlet 27 is communicated with the sidewall of the relatively upper end of the ultrasonic water passing bin 15, the inlet 27 is communicated with the shunt port 10 through a shunt pipe 11; an ultrasonic transducer 16 is arranged at the relatively upper end of the mounting base 18 along the height direction, the ultrasonic transducer 16 is located in the ultrasonic water passing bin 15, the ultrasonic transducer 16 is used for emitting ultrasonic waves into the ultrasonic water passing bin 15, and the incident wave and the reflected wave of the ultrasonic waves in the ultrasonic water passing bin 15 overlap to form a standing wave; the feeding port is communicated with a medicine injection assembly and a water injection and extraction assembly, the medicine injection assembly is used for injecting a repairing agent into the shunt bin 9, and one end of the water injection and extraction assembly, which is away from the feeding port, is used for sucking in contaminated underground water. Figure 1 The height direction shown in the above embodiment.

[0044] Compared with the prior art, the anti-attenuation ultrasonic groundwater circulation well system of the embodiment firstly communicates the medicine injection end of the medicine injection assembly and the water outlet end of the water injection and extraction assembly with the feed inlet of the shunting bin 9, and the shunting port 10 of the shunting bin 9 is communicated with the ultrasonic water passing bin 15 through the shunting pipe 11, so that the contaminated groundwater is injected into the shunting bin 9 from the feed inlet by the water injection and extraction assembly, and the repair reagent is injected into the shunting bin 9 from the feed inlet by the medicine injection assembly at the same time, so that the repair reagent and the contaminated groundwater are initially mixed in the shunting bin 9, and then enter the ultrasonic water passing bin 15. Because the ultrasonic wave transducer 16 emits ultrasonic waves into the ultrasonic water passing bin 15, the ultrasonic waves in the ultrasonic water passing bin 15 cause linear high-frequency mechanical vibration between particles during the flow of the repair reagent and the contaminated groundwater in the ultrasonic water passing bin 15, the particle acceleration is abnormally large, and the violent and rapid change provides the power for accelerated mixing of the repair reagent and the contaminated groundwater, so that the repair reagent and the contaminated groundwater can realize secondary mixing under the linear high-frequency mechanical vibration of the ultrasonic waves, and the mixing is more thorough. In this process, the groundwater absorbs vibration energy, and the sound energy is converted into heat energy to warm up, which creates good conditions for the activation of the repair reagent; at the same time, the ultrasonic waves in the ultrasonic water passing bin 15 cause violent and rapid vibration, which on the one hand accelerates the volatilization of organic pollutants in the oxygen-poor environment of the groundwater, the hydraulic shear force caused by the strong mechanical action promotes the carbon bond rupture of the macromolecular organic matter, the mechanical disturbance improves the mass transfer coefficient of the groundwater, improves the oxygen dissolution speed, promotes the “aqueous phase combustion” of organic matter, and also provides the original gas core for ultrasonic cavitation, greatly reduces the adverse effects of the oxygen-poor condition of the groundwater on the degradation of pollutants; on the other hand, the vibration energy and the instantaneous high temperature and high pressure formed by the cavitation microjet and shock wave in the sound field region provide energy for the generation of active substances such as ·OH and H2O2 and the activation and strengthening of the repair reagent, which well overcomes the defects of low water temperature and oxygen-poor environment of the groundwater, so as to efficiently repair the organic contaminated groundwater. Secondly, the incident wave and the reflected wave of the ultrasonic waves emitted by the ultrasonic wave transducer 16 into the ultrasonic water passing bin 15 overlap to form a standing wave to enhance the amplitude, actively reduce the ultrasonic wave attenuation, improve the ultrasonic wave anti-attenuation ability without additionally increasing the power of the ultrasonic wave transducer 16, which is conducive to the role of the ultrasonic waves and has good activation and strengthening effect on the repair reagent, and ensures that the organic contaminated groundwater can be efficiently repaired; and the way of reducing the ultrasonic wave attenuation in the groundwater circulation well system of the embodiment does not increase additional power consumption, can simply and lowly consume to treat the organic pollutants in the groundwater, and conforms to the principles of high efficiency, green and low carbon.The contaminated groundwater flowing out of the shunt bin 9 flows into the relatively upper end of the ultrasonic water passing bin 15 along the height direction (i.e. the tail end of the ultrasonic water passing bin 15) and flows out from the relatively lower end of the ultrasonic water passing bin 15 along the height direction (i.e. the head end of the ultrasonic water passing bin 15), so that the flowing direction of the contaminated groundwater in the ultrasonic water passing bin 15 is opposite to the ultrasonic wave emission direction in the ultrasonic water passing bin 15; according to the Doppler effect, when the ultrasonic wave and the receptor (contaminated groundwater) approach each other, the receiving frequency of the receptor will become larger. Therefore, the contaminated groundwater flowing reversely in the ultrasonic water passing bin 15 gradually increases and uniformly changes the frequency, and the effect is better, and the effect of repairing the organic contaminated groundwater is further improved. Finally, the high-frequency mechanical vibration of the ultrasonic wave in the ultrasonic water passing bin 15 bombards the water inlet hole, the water outlet hole and the flow path of the circulating well system, which can prevent accumulation and deposition, promote the decomposition of existing blockages into small particles, automatically clean the circulating well blockage, and prolong the service life of the circulating well system.

[0045] The incident wave and the reflected wave of the ultrasonic wave in the ultrasonic water passing bin 15 overlap to form a standing wave with enhanced amplitude, and the principle of actively reducing ultrasonic wave attenuation is as follows:

[0046] The right-going wave propagating along the positive direction of the x-axis is the ultrasonic wave incident wave, and the wave equation is: , wherein T is the period of the ultrasonic wave, A is the amplitude of the ultrasonic wave, and λ is the wavelength of the ultrasonic wave;

[0047] The left-going wave propagating along the negative direction of the x-axis is the ultrasonic wave reflected wave, and the wave equation is: , wherein x is the position of the starting point of the ultrasonic wave reflected wave;

[0048] The combined standing wave equation is: ;

[0049] According to the formula: ;

[0050] The combined standing wave equation is: ;

[0051] Any point on the combined standing wave is a simple harmonic vibration with the same period, and the amplitude of the combined standing wave is |2Acos2π(x / λ)|, so as to realize the superposition of the incident wave and the reflected wave of the ultrasonic wave in the ultrasonic water passing bin 15 to form a standing wave with enhanced amplitude, and actively reduce the attenuation of the ultrasonic wave.

[0052] In some embodiments of the application, the starting point of the reflected wave of the ultrasonic wave in the ultrasonic water passing chamber 15 is located at an integer multiple of the half wavelength of the ultrasonic wave; that is, the starting point of the reflected wave of the ultrasonic wave is located at x = ± kλ / 2, k = 0, 1, 2,..., k is an integer, and the amplitude of the resulting standing wave is 2Acoskπ. Since coskπ = ±1, the amplitude of the resulting wave is |2Acos2π(x / λ)| = 2A, which is twice the original amplitude, and can more effectively reduce ultrasonic wave attenuation. It should be noted that the x-axis is parallel to the height direction as shown, and the positive direction of the x-axis refers to upward along the height direction, and the negative direction of the x-axis refers to downward along the height direction. Figure 1

[0053] It should be noted that the repair agent is one or more of Fenton reagent, permanganate, persulfate, and hydrogen peroxide.

[0054] In some embodiments of the application, the ultrasonic transducer 16 is fixedly connected to the opposite upper end surface of the mounting base 18 in the height direction, the ultrasonic water passing chamber 15 is slidably connected to the opposite upper end surface of the mounting base 18 in the height direction, and the ultrasonic water passing chamber 15 has a stable state after being adjusted to ascend or descend in the height direction. The ultrasonic transducer 16 is fixed to the mounting base 18, and during the adjustment of the ultrasonic water passing chamber 15 to ascend or descend in the height direction relative to the mounting base 18, the position of the ultrasonic transducer 16 does not change with the movement of the ultrasonic water passing chamber 15 in the height direction, that is, when the ultrasonic water passing chamber 15 is adjusted to ascend or descend in the height direction, the distance between the emitting end of the ultrasonic transducer 16 and the tail end of the ultrasonic water passing chamber 15 changes (that is, the position of the starting point of the reflected wave of the ultrasonic wave in the ultrasonic water passing chamber 15 is adjusted), which can reduce the effective length of the ultrasonic water passing chamber 15 according to the half wavelength multiple distance. At this time, the total amount of ultrasonic energy does not change, but the space in the ultrasonic water passing chamber 15 is reduced, the energy density is increased, the degradation ability of the difficult-to-degrade organic pollutants is enhanced, and the application can adapt to pollutants with different degradation difficulties, which is more practical. It should be noted that the effective length of the ultrasonic water passing chamber 15 refers to the actual distance of ultrasonic propagation in the ultrasonic water passing chamber 15, that is, the distance from the emitting point of the ultrasonic transducer 16 to the tail end (reflection point) of the ultrasonic water passing chamber 15.

[0055] The ultrasonic water passing chamber 15 in this embodiment is slidably connected to the opposite upper end surface of the mounting base 18 in the height direction, and has a stable state after being adjusted to ascend or descend in the height direction, which improves the convenience of adjusting the ultrasonic water passing chamber 15 to ascend or descend. Figure 5 ​As shown, preferably, the outer circumferential surface of the ultrasonic water passing chamber 15 is circumferentially spaced apart with preferably four elastic clamping blocks 12 arranged parallel to the height direction; the opposite upper end surface of the mounting base 18 is provided with clamping grooves corresponding to the positions of the elastic clamping blocks 12 along the height direction, and the clamping grooves are matched with the elastic clamping blocks 12; when it is necessary to adjust the lifting of the ultrasonic water passing chamber 15, the elastic clamping blocks 12 are pressed to be compressed and deformed to be separated from the clamping grooves, the stable force applied by the ultrasonic water passing chamber 15 is released, the ultrasonic water passing chamber 15 can be lifted along the height direction, the position of the reflection wave starting point of the ultrasonic wave in the ultrasonic water passing chamber 15 is adjusted, the effective length of the ultrasonic water passing chamber 15 is reduced according to the half-wavelength multiple distance, and the ultrasonic wave energy density in the ultrasonic water passing chamber 15 is increased; after the ultrasonic water passing chamber 15 is adjusted to the appropriate position, the pressing force applied on the elastic clamping blocks 12 is removed, the elastic clamping blocks 12 elastically recover to be re-embedded in the clamping grooves, and the ultrasonic water passing chamber 15 is re-fixed on the mounting base 18 to enter the stable state. Of course, in other embodiments, the outer circumferential surface of the opposite lower end of the ultrasonic water passing chamber 15 along the height direction is provided with external threads, and the opposite upper end surface of the mounting base 18 along the height direction is provided with thread grooves matched with the external threads; when it is necessary to adjust the lifting of the ultrasonic water passing chamber 15, the ultrasonic water passing chamber 15 is rotated in the forward direction or in the reverse direction relative to the thread grooves to drive the ultrasonic water passing chamber 15 to ascend or descend relative to the mounting base 18; when the rotating force applied on the ultrasonic water passing chamber 15 to drive the ultrasonic water passing chamber 15 to rotate is removed, the ultrasonic water passing chamber 15 is fixed on the mounting base 18 by the thread engagement force between the external threads and the thread grooves to enter the stable state.

[0056] Preferably, the shape and external dimensions of the ultrasonic transducer 16 are matched with the shape and dimensions of the interior of the ultrasonic water passing chamber 15, so that the contaminated groundwater flowing through the interior of the ultrasonic water passing chamber 15 is subjected to the ultrasonic wave effect, further improving the remediation effect on the contaminated groundwater.

[0057] In view of the small processing flux of a single ultrasonic water passing chamber 15, in order to effectively improve the processing flux of the anti-attenuation ultrasonic groundwater circulating well system and meet the large flux processing requirements, for example, Figure 1 、 Figure 2 and Figure 4As shown, in some embodiments of the present application, the plurality of flow distribution ports 10 is preferably six, and the number of the ultrasonic water passing chambers 15 is equal to that of the flow distribution ports 10. Each of the inlets 27 of the ultrasonic water passing chambers 15 is connected to one of the flow distribution ports 10 through one of the flow distribution pipes 11, and each of the ultrasonic water passing chambers 15 is provided with one of the ultrasonic transducers 16. By providing each of the ultrasonic water passing chambers 15 with an independent ultrasonic transducer 16, the contaminated groundwater flowing through the interior of each of the ultrasonic water passing chambers 15 can be treated based on the ultrasonic circulating well degradation technology. It should be noted that the number of the ultrasonic water passing chambers 15 can be reasonably increased or decreased according to the actual size of the treatment channel, for example, in other embodiments, the number of the ultrasonic water passing chambers 15 can be set to two, three, four, five, seven or other numbers.

[0058] The six ultrasonic water passing chambers 15 can be arranged in a ring shape, a rectangular shape, a polygonal shape or an irregular shape on the opposite upper end surface of the mounting base 18 in the height direction. Preferably, in order to make the water pressure distribution uniform and achieve better repair treatment effect, the six ultrasonic water passing chambers 15 are arranged on the mounting base 18 in a circumferential direction with the center of the circulating well body 23 as the center. It should be noted that the center of the circulating well body 23 overlaps with the center of the mounting base 18.

[0059] In specific applications, the number of ultrasonic water passing chambers 15 can be reasonably selected according to the concentration of pollutants in the contaminated groundwater to be repaired. In other embodiments, when the concentration of pollutants in the contaminated groundwater to be repaired is low, one ultrasonic water passing chamber 15 can be provided; when the concentration of pollutants in the contaminated groundwater to be repaired is high, a plurality of ultrasonic water passing chambers 15 can be provided, which are arranged in the cavity in the height direction and the inlet 27 of the lower ultrasonic water passing chamber 15 is connected to the water outlet 30 of the adjacent and upper ultrasonic water passing chamber 15.

[0060] In some embodiments of the present application, the opposite lower end surface of the ultrasonic water passing chamber 15 in the height direction is provided with a water outlet 30, the water outlet 30 is connected to the inner cavity of the ultrasonic water passing chamber 15, and the aperture of the water outlet 30 is smaller than the inner diameter of the inner cavity of the ultrasonic water passing chamber 15. Because the aperture of the water outlet 30 is smaller than the inner diameter of the inner cavity of the ultrasonic water passing chamber 15, the flow rate of the groundwater in the ultrasonic water passing chamber 15 decreases when flowing through the water outlet 30, the pressure increases, the groundwater pressure in the ultrasonic water passing chamber 15 increases, the attenuation coefficient of the ultrasonic wave decreases, the passive reduction of the ultrasonic wave attenuation is reduced, the ultrasonic wave attenuation resistance is improved, which is conducive to the role of the ultrasonic wave and the activation of the repair agent. The strengthening effect is good, which ensures that the organic contaminated groundwater can be efficiently repaired. It should be noted that according to Bernoulli equation: p + 0.5ry 2+pg h = C, wherein, p is pressure, v is flow velocity, p is fluid density, g is gravitational acceleration, h is height, and C is a constant. When the flow velocity decreases, the pressure increases, and the Bernoulli equation constant C remains unchanged. Therefore, the flow velocity of the groundwater in the ultrasonic water passing tank 15 decreases when the groundwater flows through the water outlet 30, and the pressure increases. It should be noted that the position corresponding to the water outlet 30 on the mounting base 18 is penetrated in the height direction by a perforation for the outlet of the groundwater.

[0061] In the present embodiment, preferably, the ultrasonic water passing tank 15 is a pipe with equal diameters, the water outlet 30 of the ultrasonic water passing tank 15 is a hole, and the diameter of the water outlet 30 is smaller than the inner diameter of the ultrasonic water passing tank 15. When the contaminated groundwater flows out of the ultrasonic water passing tank 15, the flow velocity of the groundwater decreases, and the pressure increases. Since the pressure is inversely proportional to the attenuation coefficient, the attenuation coefficient of the ultrasonic wave in the ultrasonic water passing tank 15 decreases, and the ultrasonic wave attenuation decreases.

[0062] The shape of the ultrasonic water passing tank 15 is not fixed, and in specific applications, the shape of the ultrasonic water passing tank 15 can be a polygonal column, a square column, a circular column, or an irregular shape. The size of the water outlet 30 is not fixed, and the size of the water outlet 30 at the bottom of the ultrasonic water passing tank 15 can be designed according to the need to increase the pressure. The smaller the size of the water outlet 30 at the bottom of the ultrasonic water passing tank 15, the greater the pressure required. The shape of the water outlet 30 of the ultrasonic water passing tank 15 is not limited to a circle, and can be a square, a rectangle, a polygon, or an irregular shape, etc.

[0063] The position of the water outlet 30 can be arranged according to the shape of the ultrasonic transducer 16 mounted on the mounting base 18; when the ultrasonic transducer 16 is a regular shape, the water outlet 30 of the ultrasonic water passing tank 15 can be arranged at the center of the shape of the ultrasonic transducer 16; when the shape of the ultrasonic transducer 16 is irregular, the position of the water outlet 30 of the ultrasonic water passing tank 15 can be arranged at the relative geometric center of the ultrasonic transducer 16.

[0064] As Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in some embodiments of the application, the outlet 30 is provided with a plug 20 in interference fit; the inlet 27 of the ultrasonic water passing chamber 15 is in communication with the connection end of the shunt pipe 11 with a booster chamber 13, the booster chamber 13 is arranged parallel to the height direction, and the opposite lower end of the booster chamber 13 along the height direction is in communication with the inlet 27. Before starting the operation of the anti-attenuation ultrasonic underground water circulating well system of the embodiment, the outlet 30 of the ultrasonic water passing chamber 15 is provided with a plug 20 in interference fit, the outlet 30 of the ultrasonic water passing chamber 15 is blocked, the contaminated underground water is injected into the shunt chamber 9 by the water pumping and injecting assembly and flows through the shunt pipe 11 into the ultrasonic water passing chamber 15, because the outlet 30 of the ultrasonic water passing chamber 15 is blocked, the underground water is then injected into the booster chamber 13 after gradually filling the inside of the ultrasonic water passing chamber 15, so that the liquid level of the underground water in the booster chamber 13 is lifted to compress the air in the booster chamber 13, the pressure of the compressed air in the booster chamber 13 becomes larger, and the pressure of the compressed air and the gravity of the lifted water body in the booster chamber 13 are both transmitted to the ultrasonic water passing chamber 15, increasing the bearing pressure of the ultrasonic water passing chamber 15, when the bearing pressure in the ultrasonic water passing chamber 15 increases to the bearing limit of the plug 20, the plug 20 is separated from the outlet 30 of the ultrasonic water passing chamber 15, the underground water flow circulation channel is opened to repair the contaminated underground water, and in the process of circulation, the booster chamber 13 can continuously pressurize the ultrasonic water passing chamber 15 after the liquid level in the booster chamber 13 is balanced, so that the pressure of the underground water flowing through the ultrasonic water passing chamber 15 becomes larger, because the pressure is inversely proportional to the attenuation coefficient, the attenuation coefficient of the ultrasonic wave in the ultrasonic water passing chamber 15 is reduced, the attenuation of the ultrasonic wave is passively reduced, and the incident wave and the reflected wave of the ultrasonic wave in the ultrasonic water passing chamber 15 are overlapped to form a standing wave with enhanced amplitude, realizing the combination of reducing the attenuation coefficient of the ultrasonic wave and forming a standing wave to improve the anti-attenuation ability of the ultrasonic wave, thereby realizing the active and passive combination to reduce the attenuation of the ultrasonic wave, the effect of anti-attenuation of the ultrasonic wave is obvious without increasing additional power consumption, the organic pollutants in the underground water can be simply and lowly consumed, and the high-efficiency, green and low-carbon principle is met. At the same time, by blocking the outlet 30 of the ultrasonic water passing chamber 15 with the plug 20 before starting the operation of the anti-attenuation ultrasonic underground water circulating well system of the embodiment, the pressurization of the ultrasonic water passing chamber 15 is completed before the operation of the anti-attenuation ultrasonic underground water circulating well system of the embodiment, the pressure of the underground water flowing through the ultrasonic water passing chamber 15 is ensured to become larger, the operation mode of the anti-attenuation ultrasonic underground water circulating well system of the embodiment is simplified, and the system only needs to be started and operated like the non-ultrasonic circulating well system without additional operation process.

[0065] At the same time, the inlet 27 of the ultrasonic water passing chamber 15 is located at the top of the ultrasonic water passing chamber 15, the underground water flows from the top of the ultrasonic water passing chamber 15, compared with the water inlet mode of the middle or the bottom, the embodiment can ensure that the pressure increased by the booster chamber 13 acts on the entire chamber body of the ultrasonic water passing chamber 15.

[0066] AsFigure 1 and Figure 3 As shown, in some embodiments of the present invention, a packer 24 is provided in the cavity, which is used to divide the cavity into an upper cavity 21 and a lower cavity 25 along the height direction from top to bottom; the diversion chamber 9 and the mounting base 18 are disposed in the upper cavity 21, and the end of the water injection assembly opposite to the feed inlet extends into the lower cavity 25; an upper screen pipe 22 is provided at the lower end of the wall of the upper cavity 21 along the height direction, which is used to allow groundwater to flow through the upper screen pipe 22 into and out of the upper cavity 21; a lower screen pipe 26 is provided at the lower end of the wall of the lower cavity 25 along the height direction, which is used to allow groundwater to flow through the lower screen pipe 26 into and out of the lower cavity 25. During the startup of the anti-attenuation ultrasonic groundwater circulation well system of this embodiment, the pumping and injection assembly pumps the contaminated groundwater from the lower cavity 25 and injects it into the diversion chamber 9 for initial mixing with the remediation agent. Then, it enters the ultrasonic water passage chamber 15 through the diversion pipe 11 for a second mixing with ultrasonic waves. Simultaneously, during the second mixing process, the remediation agent is agitated and activated by ultrasonic waves. The mixture is then injected into the upper cavity 21 and, under pressure, flows out of the circulation well body 23 through the upper screen pipe 22. After the groundwater in the lower cavity 25 is pumped out, creating negative pressure, groundwater outside the circulation well body 23 enters the lower cavity 25 through the lower screen pipe 26 to replenish it, forming a three-dimensional circulation flow in space (the groundwater flow direction in the circulation well system is as follows). Figure 1 As shown in the diagram, this promotes effective contact between the remediation agent and the contaminated groundwater, further improving the remediation effect. It is understood that the water injection method in this embodiment is bottom-pumping and top-injection. The contaminated groundwater is drawn up from the lower cavity 25 by the water injection component, flows through the diversion chamber 9 and the ultrasonic water-passing chamber 15, and is injected into the upper cavity 21. In other embodiments, the diversion chamber 9, the mounting base 18, and the ultrasonic water-passing chamber 15 are disposed within the lower cavity 25, and the end of the water injection component facing away from the inlet extends into the upper cavity 21. The water injection method, with bottom-pumping and top-injection, also creates a three-dimensional circulating flow in space. The contaminated groundwater is drawn up from the upper cavity 21 by the water injection component, flows through the diversion chamber 9 and the ultrasonic water-passing chamber 15, and is injected into the lower cavity 25.

[0067] Specifically, the upper screen pipe 22 is configured as a channel for groundwater to enter and exit the upper cavity 21; the lower screen pipe 26 is configured as a channel for groundwater to enter and exit the lower cavity 25.

[0068] Specifically, the upper screen pipe 22 and the lower screen pipe 26 can be slotted screen pipes or perforated screen pipes, so as to enable the groundwater in the upper screen pipe 22 to flow out of the circulation well body 23 under the action of pressure difference and to allow the groundwater outside the circulation well body 23 to enter the lower cavity 25 through the lower screen pipe 26.

[0069] In specific applications, multiple ultrasonic water-passing chambers 15 are arranged circumferentially on the mounting base 18 with the center of the circulation well body 23 as the center. The distance between the ultrasonic water-passing chambers 15 at different circumferential positions and the center of the circulation well body 23 along its radial direction is different. Considering that the three-dimensional circulation of groundwater within the circulation well body 23 causes uneven groundwater pressure distribution, resulting in different groundwater pressures at the well center and well edge (lower pressure at the well edge), and since the ultrasonic attenuation coefficient is inversely proportional to the groundwater pressure, in order to ensure… The ultrasonic attenuation rate and degree within the ultrasonic water-passing chamber 15 located at the well edge are kept essentially consistent with those within the ultrasonic water-passing chamber 15 located near the well center. Specifically, the size of the pressurization chamber 13 connected to the ultrasonic water-passing chamber 15 located at the well edge is larger than the size of the pressurization chamber 13 connected to the ultrasonic water-passing chamber 15 located near the well center. Ensuring that the ultrasonic water-passing chamber 15 located at the well edge is equipped with a pressurization chamber 13 with stronger pressurization capacity can improve the overall attenuation resistance of this anti-attenuation ultrasonic groundwater circulation well system.

[0070] like Figure 1 As shown, in some embodiments of the present invention, the water injection assembly includes a water injection pipe 6 that extends through the packer 24 along the height direction. One end of the water injection pipe 6 is connected to the lower cavity 25, and the other end of the water injection pipe 6 is connected to the feed inlet. A water injection pump 5 is provided on the water injection pipe 6, and the water injection pump 5 is located on the ground. During the startup of the anti-attenuation ultrasonic groundwater circulation well system of this embodiment, the pump 5 is started to pump the contaminated groundwater in the lower cavity 25 into the pump pipe 6 and inject it into the diversion chamber 9 to mix with the remediation agent for the first time. Then, it enters the ultrasonic water passage chamber 15 through the diversion pipe 11 and is mixed a second time by ultrasonic waves. At the same time, during the second mixing process, the remediation agent is stirred and activated by ultrasonic waves. Then, it is injected into the upper cavity 21 and flows out of the circulation well body 23 from the upper screen pipe 22 under pressure. After the lower cavity 25 is pumped into negative pressure, the groundwater outside the circulation well body 23 enters the lower cavity 25 through the lower screen pipe 26 to replenish it, forming a three-dimensional circulation flow in space, which further improves the remediation effect on the contaminated groundwater.

[0071] During the remediation of contaminated groundwater, the groundwater pumped by the injection pipe 6 must pass through the ultrasonic water chamber 15. Under the action of ultrasonic mechanical stirring and heat energy conversion, on the one hand, the volatilization of organic pollutants and the breaking of main chain carbon bonds in the underground dark environment are accelerated, and on the other hand, the oxygen dissolution rate in the underground oxygen-deficient environment is increased, which helps the organic matter to "combust in the aqueous phase".

[0072] like Figure 1As shown, in some embodiments of the present application, the injection assembly comprises a medicament tank 3 for storing remediation agent and an injection pipe 8 communicating the medicament tank 3 and the feed inlet, the injection pipe 8 is provided with an injection pump 4, and the injection port of the injection pipe 8 is located in the water injection end of the injection and extraction pipe 6. During the operation of the anti-degradation ultrasonic underground water circulation well system, the remediation agent is injected into the injection pipe 8 by the injection pump 4 and enters the feed inlet of the shunt bin 9, and the remediation agent undergoes double mixing in the shunt bin 9 and the ultrasonic water passing bin 15. First, the remediation agent in the shunt bin 9 is mixed with the contaminated groundwater, and then enters the ultrasonic water passing bin 15 for secondary mixing by ultrasonic waves. During the secondary mixing process, the remediation agent is stirred and activated by the mechanical energy and thermal energy of the ultrasonic waves and then enters the upper cavity 21. Under the action of the pressure difference between the inside and outside of the circulation well body 23, the remediation agent flows out of the upper cavity 21 to the outside of the circulation well body 23, enters the lower cavity 25 through the lower screen pipe 26, and is then extracted into the shunt bin 9 and the ultrasonic water passing bin 15 again for double mixing, and the process is repeated. The remediation agent is directly put into the ultrasonic water passing bin 15, which can ensure that all the added remediation agent receives the mechanical energy and thermal energy of the ultrasonic waves for stirring. The remediation agent undergoes double mixing in the shunt bin 9 and the ultrasonic water passing bin 15 in turn, which is more uniform than relying on concentration diffusion mixing, and the remediation agent is activated and has better decontamination performance.

[0073] In specific applications, the length of the injection pipe 8 extending into the shunt bin 9 can be adjusted. The shorter the length, the longer the flow distance of the remediation agent in the shunt bin 9, and the longer the initial mixing time of the remediation agent and the contaminated groundwater. The injection port of the injection pipe 8 can be a common round pipe or a nozzle with fine holes. In order to achieve better initial mixing effect, in this embodiment, the injection port of the injection pipe 8 is a nozzle with fine holes, and the remediation agent is sprayed in mist form, which has better initial mixing degree.

[0074] In order to facilitate the fixation of the detached plug body 20, in some embodiments of the present application, the packer 24 is provided with a magnet on the relatively upper end surface in the height direction, and the plug body 20 comprises a rubber part and a magnetic plug cap 17 provided on one end of the rubber part in the height direction, and the rubber part is interference fitted in the water outlet 30. When the pressure in the ultrasonic water passing bin 15 increases to the bearing limit of the rubber part, the rubber part is deformed under pressure and separates from the water outlet 30 of the ultrasonic water passing bin 15, and can be stably adsorbed and fixed on the relatively upper end surface of the packer 24 in the height direction based on the gravity of the plug body 20 and the magnetic force between the magnetic plug cap 17 and the magnet.

[0075] As Figure 1As shown, in some embodiments of the present invention, a gas treatment assembly is also included. The gas treatment assembly includes a gas collection hood 7 disposed within the upper part of the cavity along its height direction. The gas collection hood 7 is connected to an outlet pipe 28, one end of which extends to the outside of the circulation well body 23 and is connected to a gas treatment chamber 1. The gas treatment chamber 1 is located on the ground surface, and a suction pump 2 is installed on the outlet pipe 28. During the remediation of contaminated groundwater, naturally volatilized or disturbed volatilized gaseous pollutants within the circulation well body 23 are drawn in by the suction pump 2 and collected by the gas collection hood 7 and the outlet pipe 28 into the gas treatment chamber 1 located on the ground surface. The gas treatment chamber 1 can treat the gaseous volatilized pollutants, further improving the remediation effect.

[0076] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a connecting cover 14 is provided at the lower end of the diversion chamber 9 along the height direction, and the diversion port 10 and the ultrasonic water passage chamber 15 are disposed inside the connecting cover 14; the connecting cover 14 is detachably connected to the upper end face of the mounting base 18 along the height direction. The mounting base 18 is detachably connected to the lower end face of the connecting cover 14, which is easy to disassemble; when increasing or decreasing the ultrasonic treatment throughput, it is only necessary to replace the mounting base 18 with more or fewer ultrasonic water passage chambers 15, making it more flexible to use; at the same time, by covering all the ultrasonic water passage chambers 15 and ultrasonic transducers 16 by the connecting cover 14, it can effectively prevent the ultrasonic water passage chambers 15 and ultrasonic transducers 16 from being damaged by the outside. It can be understood that the shape of the connecting cover 14 can be set as cylindrical, conical or square, etc. In this embodiment, the shape of the connecting cover 14 is preferably conical.

[0077] This embodiment does not limit the detachable connection structure of the connecting cover 14 and the mounting base 18. However, to improve the ease of disassembling the two while ensuring the secure connection between the connecting cover 14 and the mounting base 18, as follows: Figure 1 and Figure 2 As shown, preferably, the connecting cover 14 is rotated outward by 90 degrees along its lower end in the height direction to form a horizontal plate 29. The horizontal plate 29 has a plurality of first through holes spaced apart circumferentially. The mounting base 18 has a second through hole extending through it in the height direction relative to the first through holes. During assembly, the fixing bolt 19 passes through the second through hole and the first through hole and is tightened with a nut. Of course, in other embodiments, the detachable connection structure of the connecting cover 14 and the mounting base 18 can also be configured as an interference fit between a plug and a slot, or other structures.

[0078] The ultrasonic degradation technology relies on the following effects: ① mechanical effect. Ultrasonic wave is the propagation of mechanical energy, which can produce linear effect of vibration. When ultrasonic wave propagates in liquid, the amplitude of particle displacement is very small, but the particle acceleration is very large. For example, when 20 KHz, 1 W / cm 2 ultrasonic wave propagates in water, the amplitude of sound pressure is 173 KPa, which means that the amplitude of sound pressure changes 20,000 times between positive and negative 173 KPa per second, the maximum particle acceleration is 144 x 104m / s 2 , which is 1500 times of the gravitational acceleration. The intense and rapid mechanical movement is the mechanical vibration effect of power ultrasound. ② cavitation effect. When the sound intensity of ultrasonic wave propagates in liquid medium reaches a certain value, the sound field action area forms a local temporary negative pressure, and the micro-bubbles grow, expand and burst. The strong shock wave is generated around the bubble, forming a local high temperature and high pressure up to 5000 K and 50 Mpa, accompanied by strong shock wave and microjet with a speed of 400 Km. ③ thermal effect. The vibration energy of ultrasonic wave is absorbed by the medium and converted into heat energy. The sound energy is absorbed to cause the overall heating of the medium, and the cavitation shock wave energy locally heats the wave front area. ④ mass transfer effect. The mass transfer coefficient of liquid under the action of ultrasonic wave vibration is enhanced, the oxygen dissolution speed is improved, and the dissolved amount in water is increased, which provides oxygen for the "water phase combustion" of organic matter, and also provides the original gas core for ultrasonic cavitation.

[0079] Obviously, the above examples are only examples for clearly illustrating, but not limitation of the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An anti-deterioration ultrasonic groundwater circulation well system, characterized by, The utility model relates to a kind of ultrasonic water purification devices, including: Circulating well body (23), cavity is arranged in, Splitting bin (9) is arranged in the cavity, the opposite upper end and the opposite lower end of the height direction of the splitting bin (9) are respectively provided with feed inlet and splitting port (10), the feed inlet and the splitting port (10) are all communicated with the inner chamber of the splitting bin (9); Mounting base (18) is arranged in the opposite directly below of the height direction of the splitting bin (9); Ultrasonic water passing bin (15) is arranged on the mounting base (18) parallel to the height direction, the side wall of the opposite upper end of the ultrasonic water passing bin (15) is communicated with inlet (27), the inlet (27) is communicated with the splitting port (10) by splitting pipe (11); Ultrasonic transducer (16) is arranged on the mounting base (18), and is located in the ultrasonic water passing bin (15), the ultrasonic transducer (16) is used to emit ultrasonic wave to the ultrasonic water passing bin (15), and the incident wave and the reflected wave of the ultrasonic wave in the ultrasonic water passing bin (15) are overlapped to form standing wave; Medicine injection assembly is communicated with the feed inlet, and is used to inject repair medicament into the splitting bin (9); Water pumping and injecting assembly is communicated with the feed inlet at one end, and is used to suck in contaminated groundwater at the other end; The starting point of the reflected wave of the ultrasonic wave in the ultrasonic water passing bin (15) is located at the integer multiple position of the half wavelength of the ultrasonic wave; The opposite lower end surface of the ultrasonic water passing bin (15) along the height direction is provided with water outlet (30), the water outlet (30) is communicated with the inner chamber of the ultrasonic water passing bin (15), and the aperture of the water outlet (30) is smaller than the inner diameter of the inner chamber of the ultrasonic water passing bin (15).

2. The anti-deterioration ultrasonic underground water circulation well system according to claim 1, characterized in that, The splitting port (10) is provided with multiple, the number of the ultrasonic water passing bin (15) and the splitting port (10) is equal, the inlet (27) of each ultrasonic water passing bin (15) is communicated with one splitting port (10) by one splitting pipe (11), and one ultrasonic transducer (16) is arranged in each ultrasonic water passing bin (15).

3. The anti-deterioration ultrasonic underground water circulation well system according to claim 1, characterized in that, The ultrasonic transducer (16) is fixedly connected on the opposite upper end surface of the mounting base (18) along the height direction, the ultrasonic water passing bin (15) is slidably connected on the opposite upper end surface of the mounting base (18) along the height direction, and the ultrasonic water passing bin (15) has stable state after being adjusted to ascend and descend along the height direction.

4. The anti-deterioration ultrasonic underground water circulation well system according to claim 3, characterized in that, The outer circumferential surface of the ultrasonic water passing bin (15) is arranged with multiple elastic clamping blocks (12) along the circumference, and the elastic clamping blocks (12) are arranged parallel to the height direction;The mounting base (18) is provided with clamping groove on the opposite upper end surface along the height direction corresponding to the position of the elastic clamping block (12), and the clamping groove is matched with the elastic clamping block (12);When the ultrasonic water passing bin (15) is adjusted to ascend and descend, the elastic clamping block (12) is pressed to separate from the clamping groove.

5. The anti-deterioration ultrasonic underground water circulation well system according to claim 1, characterized in that, The water outlet (30) is provided with a plug (20) in interference fit; the inlet (27) of the ultrasonic water passing chamber (15) is communicated with the connecting end of the shunt pipe (11) with a booster chamber (13), the booster chamber (13) is arranged parallel to the height direction, and the relative lower end of the booster chamber (13) along the height direction is communicated with the inlet (27).

6. The anti-deterioration ultrasonic underground water circulation well system according to claim 5, characterized in that, The cavity is provided with a packer (24), the packer (24) is used for separating the cavity into an upper cavity (21) and a lower cavity (25) from top to bottom along the height direction; the shunt chamber (9) and the mounting base (18) are arranged in the upper cavity (21), one end of the water injection and extraction assembly away from the feed port extends into the lower cavity (25); the upper cavity (21) is provided with an upper screen pipe (22), the upper screen pipe (22) is used for the underground water to flow in and out of the upper cavity (21) through the upper screen pipe (22); the lower cavity (25) is provided with a lower screen pipe (26), the lower screen pipe (26) is used for the underground water to flow in and out of the lower cavity (25) through the lower screen pipe (26).

7. An anti-deterioration ultrasonic groundwater circulation well system according to claim 6, characterized in that, The relative upper end surface of the packer (24) along the height direction is provided with a magnet, the plug (20) comprises a rubber part and a magnetic plug cap (17) arranged at one end of the rubber part along the height direction, and the rubber part is in interference fit in the water outlet (30); And / or, the water injection and extraction assembly comprises a water injection and extraction pipe (6) penetrating through the packer (24) along the height direction, one end of the water injection and extraction pipe (6) is communicated with the lower cavity (25), the other end of the water injection and extraction pipe (6) is communicated with the feed port, and the water injection and extraction pipe (6) is provided with a water injection and extraction pump (5); And / or, the medicine injection assembly comprises a medicine tank (3) for storing repair medicine and a medicine injection pipe (8) communicated with the medicine tank (3) and the feed port, and the medicine injection pipe (8) is provided with a medicine injection pump (4).

8. The anti-deterioration ultrasonic underground water circulation well system according to claim 2, characterized in that, The relative lower end of the shunt chamber (9) along the height direction is provided with a connecting cover (14), the shunt port (10) and the ultrasonic water passing chamber (15) are arranged in the connecting cover (14); and the connecting cover (14) is detachably connected to the upper end surface of the mounting base (18) along the height direction.

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