Treatment device for wastewater containing refractory organic matters

Abstract

The invention discloses a treatment device for wastewater containing refractory organic matters, and relates to the field of wastewater treatment. A treatment device for wastewater containing refractory organics comprises a treatment pond, the lower ends of the two sides of the treatment pond are communicated with a water inlet pipe and a water outlet pipe respectively, the treatment device further comprises a plurality of ultrasonic transducers installed at the lower end of the treatment pond at equal intervals, and the input ends of the ultrasonic transducers are electrically connected with the output end of an ultrasonic generator through cables; a large number of active substances such as hydroxyl radicals are generated in the sewage, and the treatability and the treatment efficiency of the wastewater are remarkably improved; the air bubbles generated by air injection are utilized to realize floating cleaning of sediment impurities, so that the tedious process of sludge cleaning by using a large sedimentation tank and complex sludge scraping equipment in the traditional sedimentation process is avoided, the complexity of manual intervention and equipment operation is reduced, and meanwhile, the energy consumption and the operation cost in the cleaning process are also reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment device for wastewater containing difficult-to-degrade organic matter. Background Art

[0002] In the current era of rapid industrial development, many industries such as chemical, pharmaceutical, printing and dyeing have discharged a large amount of wastewater containing difficult-to-degrade organic matter. Traditional treatment methods, such as biological methods and chemical precipitation methods, are often ineffective for this type of wastewater. Ultrasonic sewage treatment technology, as an emerging treatment method, can convert harmful organic matter in the water into CO2, H2O, inorganic ions or organic matter that is less toxic and easier to degrade than the original organic matter during the sewage treatment process. Therefore, organic pollutants that are difficult to treat by biological degradation in traditional sewage treatment can be degraded through the cavitation effect of ultrasound.

[0003] During the treatment process, although the cavitation effect of ultrasound can be used to decompose organic matter, some floating matter and sediment will also be produced, so that two layers of impurities are produced on the surface of the wastewater and the bottom of the treatment tank. During treatment, a large sedimentation tank and a sludge scraping device are needed to be used in combination to clean the impurities. In addition, the precipitate may contain metal hydroxide precipitates, polymerized organic flocs, etc., which are easy to deposit at the bottom of the treatment tank and have strong adhesion. When cleaning, the equipment needs to be stopped and special sludge scraping or suction equipment needs to be used. The operation is cumbersome and time-consuming, which greatly affects the treatment efficiency, increases the treatment cost and maintenance difficulty, and is difficult to meet the needs of efficient and convenient treatment of wastewater containing difficult-to-degrade organic matter. In view of this, the present invention is specially proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a treatment device for wastewater containing difficult-to-degrade organic matter that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a treatment device for wastewater containing difficult-to-degrade organic matter, including a treatment tank, the lower ends of both sides of the treatment tank are respectively connected to a water inlet pipe and a drain pipe, and also includes: a plurality of ultrasonic transducers, which are equidistantly installed at the lower end of the treatment tank, and the input end of the ultrasonic transducer is electrically connected to the output end of the ultrasonic generator through a cable; the vibrating end of the ultrasonic transducer extends upward into the treatment tank and is fixedly connected to a vibrator; an air jet is fixedly connected to the treatment tank above the vibrator through a support rod; the air jet is equidistantly connected to a plurality of nozzles facing downward.

[0006] In order to reduce the problem of vibrator scaling and further promote the production of active substances, the nozzle is further arranged at a position close to the vibrator.

[0007] In order to facilitate the adjustment of the pH value of sewage according to the composition of the sewage, it further includes an acidic solution storage tank and an alkaline solution storage tank, which are symmetrically fixedly connected to one side of the treatment tank, and the acidic solution storage tank and the alkaline solution storage tank are both connected with an air inlet pipe and an air outlet pipe. The treatment tank is provided with a three-way pipe between the acidic solution storage tank and the alkaline solution storage tank, and the two air inlets of the three-way pipe are respectively connected to the two air outlet pipes, and the air outlet of the three-way pipe is connected to the air inlet of the jet pipe, and both air inlets of the three-way pipe are provided with a one-way valve.

[0008] In order to facilitate the separation of impurities and water, so as to scrape off the impurities more fully, further, a slag discharge port is provided on one side of the processing pool, and a guide plate is fixedly connected in the processing pool, and the lowermost end of the guide plate is fixedly connected to the lower end of the slag discharge port; a fixed plate is fixedly connected to the lower end of the side away from the slag discharge port in the processing pool, and two fixed rods are symmetrically fixedly connected to the fixed plate, and the upper end of the fixed rod is fixedly connected to the limit block, and the upper surface of the limit block is flush with the upper surface of the guide plate. A floating plate is slidably connected to the two fixed rods, and a groove is provided on the floating plate for use with the limit block. A movable scraper for scraping floating impurities is provided at the upper end of the interior of the processing pool, and the lower end surface of the scraper is on the same horizontal plane as the upper end surface of the guide plate. A pulling component for pulling the floating plate down into the water is provided between the jet pipe and the three-way pipe.

[0009] In order to facilitate the control of the scraper to move back and forth, further, a motor is fixedly installed on the upper end of one side of the treatment pool, and a screw rod is rotatably connected to the inner upper end of the treatment pool. The end of the screw rod close to the motor is fixedly connected to the output end of the motor, and the scraper is slidably connected in the treatment pool and is threadedly connected to the screw rod.

[0010] Furthermore, the pulling assembly includes a circular shell, a rotating shaft, a blade, a pulley and a pull rope. The circular shell is fixedly installed in the treatment pool at a position close to the air inlet of the jet pipe, the air outlet of the three-way pipe is connected with the air inlet of the circular shell, the air inlet of the jet pipe is connected with the air outlet of the circular shell, the rotating shaft is rotatably connected in the circular shell, the blades are fixedly connected to the rotating shaft at circumferentially equidistant intervals, both ends of the rotating shaft extend out of the circular shell and are fixedly connected to the pulley, one end of the pull rope is fixedly connected to the pulley, and the other end of the pull rope passes upward through the fixed plate and is fixedly connected to the floating plate.

[0011] In order to improve the stability of the floating plate and prevent the floating plate from moving up and down due to lack of limit when scraping impurities on the floating plate, thereby affecting the sufficient scraping of impurities, further, the limit block is located on the magnetic block, and a magnetic ring that magnetically attracts the limit blocks to each other is embedded in the groove of the floating plate.

[0012] In order to facilitate the impurities on the shaking plate to be discharged from the treatment pool through the slag discharge port more quickly, further, the guide plate is rotatably connected with the shaking plate through a rotating shaft, and a slag discharge port extends from one end of the shaking plate away from the rotating shaft.

[0013] Furthermore, a plurality of push rods are equidistantly slidably connected to the guide plate, the upper ends of the push rods are abutted against the bottom of the shaking plate, a telescopic spring is sleeved on the push rods, the upper and lower ends of the telescopic spring are respectively fixedly connected to the shaking plate and the guide plate, and one end of the push rod passes downward through the guide plate and is fixedly connected to a push plate.

[0014] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention can produce a large amount of active substances such as hydroxyl free radicals in sewage through the cavitation effect of ultrasound and the cavitation reaction enhanced by jet assistance, which can effectively destroy the special chemical structure of difficult-to-degrade organic matter, and significantly improve the treatability and treatment efficiency of wastewater; the bubbles generated by jetting are used to achieve the floating cleaning of precipitated impurities, avoiding the cumbersome process of sludge cleaning in traditional sedimentation processes that requires the use of large sedimentation tanks and complex sludge scraping equipment. This method is simple and efficient, and is particularly suitable for treating difficult-to-degrade organic wastewater containing high concentrations of suspended solids and precipitated impurities, such as chemical wastewater, printing and dyeing wastewater, etc., which produce a large amount of floc precipitates and heavy metal precipitates during the treatment process.

[0015] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the attached picture:

[0017] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0018] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0019] Figure 3 The structure of the treatment pool of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 4 The structure of the treatment pool of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 5 It is a schematic diagram of the internal structure of the acid solution storage box and the alkaline solution storage box of the present invention;

[0022] Figure 6 It is a schematic diagram of a part of the structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure.

[0024] In the figure: 1. treatment tank; 101. water inlet pipe; 102. drain pipe; 103. ultrasonic transducer; 104. vibrator; 105. slag outlet; 106. guide plate; 107. shaking plate; 108. push rod; 109. telescopic spring; 1010. push plate; 2. jet pipe; 201. nozzle; 202. acid solution storage tank; 203. alkaline solution storage tank; 204. air inlet pipe; 205. air outlet pipe; 206. three-way pipe; 3. fixed plate; 301. floating plate; 302. fixed rod; 303. limit block; 304. magnetic ring; 4. circular shell; 401. rotating shaft; 402. blade; 403. pulley; 404. pull rope; 5. motor; 501. screw rod; 502. scraper. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0026] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 A treatment device for wastewater containing difficult-to-degrade organic matter comprises a treatment pool 1, wherein the lower ends of both sides of the treatment pool 1 are respectively connected to a water inlet pipe 101 and a drain pipe 102, and further comprises: a plurality of ultrasonic transducers 103, which are equidistantly installed at the lower end of the treatment pool 1, wherein the input end of the ultrasonic transducer 103 is electrically connected to the output end of the ultrasonic generator through a cable; the vibrating end of the ultrasonic transducer 103 extends upward into the treatment pool 1, and is fixedly connected to a vibrator 104; an air jet 2 is fixedly connected to the treatment pool 1 above the vibrator 104 through a support rod; and the air jet 2 is equidistantly connected to a plurality of nozzles 201 facing downward.

[0027] When it is necessary to use ultrasonic equipment to treat wastewater containing difficult-to-degrade organic matter, first, the wastewater containing difficult-to-degrade organic matter is introduced into the treatment tank 1 through the water inlet pipe 101. After a certain amount of wastewater is introduced, the ultrasonic generator can be started. The high-frequency alternating current signal generated by the ultrasonic generator will be transmitted to the ultrasonic transducer 103 at the bottom of the treatment tank 1 through the cable. The ultrasonic transducer 103 converts electrical energy into high-frequency mechanical vibration based on the piezoelectric effect or the magnetostrictive effect. The vibrator 104 at its vibration end excites ultrasonic waves in the sewage in the treatment tank 1. When these ultrasonic waves propagate in the sewage, the internal pressure of the liquid changes periodically, and a negative pressure area is formed. The tiny bubbles (cavitation nuclei) in the sewage expand rapidly, and in the positive pressure area, the bubbles shrink sharply until they collapse. At the moment of cavitation bubble collapse, a high temperature of about 5000K and a high pressure environment of about 500atm will be generated locally, and at the same time, water molecules will be decomposed to produce strong oxidizing substances such as hydroxyl radicals (·OH). Hydroxyl radicals can react with refractory organic matter to attack the chemical bonds of organic molecules, and gradually decompose large molecular organic matter into small molecular substances, such as oxidizing complex organic compounds into carbon dioxide, water and relatively simple organic fragments, thereby achieving the initial degradation and transformation of refractory organic matter and improving the biodegradability of wastewater.

[0028] While the wastewater is being ultrasonically treated, gas can be transported into the jet pipe 2, and then the jet pipe 2 will spray gas into the wastewater through the nozzle 201. Since the nozzle 201 is set downward and located above the oscillator 104, the gas will be sprayed to the oscillator 104 area through the nozzle 201. During the ultrasonic cavitation process, the ejected gas can provide a rich source of cavitation nuclei for cavitation. Due to the injection of gas, the number of cores available for cavitation bubble formation in the liquid is greatly increased, further strengthening the cavitation effect, and more cavitation bubbles are generated and collapsed, thereby generating more active substances such as hydroxyl free radicals, accelerating the decomposition of difficult-to-degrade organic matter.

[0029] At the same time, the gas ejected from the nozzle 201 will form an ascending bubble flow in the water. If the sewage contains oil droplets or light organic pollutants, these substances may gather together under the action of ultrasound. Since the density of oil substances is less than that of water, they will float on the water surface. When the sewage contains heavy metal ions, ultrasound may cause the heavy metal ions to undergo chemical reactions and form precipitation. For example, under appropriate conditions, ultrasound can cause heavy metal ions (such as mercury ions, lead ions, etc.) in the wastewater to combine with hydroxide ions in the water to form metal hydroxide precipitates. The density of these precipitates is usually greater than that of water and they will gradually sink to the bottom of the water. It is convenient to clean up the impurities decomposed from the sewage. When there are precipitated impurities in the treatment tank 1, the downwardly sprayed gas will suspend the precipitated impurities in the sewage. When the bubbles generated by the gas rise, they will adhere to the surface of the impurity particles. Due to the buoyancy of the bubbles, these impurity particles suspended in the water will rise to the water surface along with the bubbles. For example, for some metal hydroxide precipitations, polymerized organic flocs, etc., the bubbles can effectively carry them up to form a foam layer on the water surface, which is convenient for subsequent cleaning by skimming and the like, thereby realizing solid-liquid separation, improving the purification degree of the sewage in the treatment tank 1, and the efficiency of impurity cleaning.

[0030] Through the cavitation effect of ultrasound and the cavitation reaction enhanced by jet assistance, a large number of active substances such as hydroxyl free radicals can be generated in the sewage, which can effectively destroy the special chemical structure of difficult-to-degrade organic matter. For organic matter with stable structures such as benzene rings and halogenated hydrocarbons that are difficult to biodegrade, such as polychlorinated biphenyls and certain pesticide residues, their chemical bonds can be broken, their molecular structures can be destroyed, and they can be converted into small molecular organic matter that is more easily accepted by subsequent treatment processes (such as biological treatment), which significantly improves the treatability and treatment efficiency of wastewater. Compared with traditional single treatment methods, such as simple biological treatment or chemical oxidation treatment, this ultrasonic and jet synergistic method can achieve deep degradation of difficult-to-degrade organic matter in a shorter time, shortening the treatment process and treatment time.

[0031] The bubbles generated by the jet are used to float and clean the precipitated impurities, avoiding the tedious process of sludge cleaning in the traditional sedimentation process that requires the use of large sedimentation tanks and complex sludge scraping equipment. This method is simple and efficient, and is especially suitable for treating difficult-to-degrade organic wastewater containing high concentrations of suspended solids and precipitated impurities, such as chemical wastewater, printing and dyeing wastewater, etc., which produce a large amount of flocculent precipitation and heavy metal precipitation during the treatment process.

[0032] The formation of a foam layer on the water surface makes the cleaning of impurities more intuitive and convenient. The cleaning time and frequency can be flexibly arranged according to the accumulation of foam, which reduces manual intervention and the complexity of equipment operation, and also reduces energy consumption and operating costs during the cleaning process.

[0033] Example 2: Reference Figure 3 , a treatment device for wastewater containing difficult-to-degrade organic matter, is basically the same as Example 1, and further, the nozzle 201 is arranged at a position close to the oscillator 104.

[0034] During the ultrasonic sewage treatment process, some substances in the sewage may form scale on the surface of the ultrasonic equipment. For example, calcium, magnesium and other ions in the water may form scale on the surface of the vibrator 104. By setting the nozzle 201 close to the vibrator 104, when the gas is ejected through the nozzle 201, it can be directly sprayed to the vibrator 104, and then the disturbance generated by the gas can reduce the deposition of these substances on the surface of the vibrator 104. The gas film formed by the gas on the surface of the vibrator 104 can also prevent the formation of scale layer to a certain extent, thereby reducing the scaling problem of the vibrator 104. At the same time, it can also cool the vibrator 104, extend the service life of the vibrator 104, reduce the maintenance cost of the equipment, ensure the normal operation of the ultrasonic equipment, enable it to continuously and stably perform the sewage treatment function, and reduce the poor sewage treatment effect caused by equipment failure or performance degradation.

[0035] At the same time, when the gas is directly sprayed onto the oscillator 104, the larger bubbles generated by the gas will be decomposed into more tiny bubbles under the high-frequency vibration of the oscillator 104, thereby facilitating the rapid formation, growth and collapse of the tiny bubbles, making the cavitation effect more intense, and more effectively decomposing pollutants in the sewage, such as large molecular organic matter, into small molecular substances, thereby improving the sewage treatment efficiency. For example, when treating industrial wastewater containing difficult-to-degrade organic pollutants, the enhanced cavitation effect can accelerate the decomposition rate of pollutants, thereby improving the biodegradability of the wastewater and creating better conditions for subsequent biological treatment processes.

[0036] Example 3: Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , a treatment device for wastewater containing difficult-to-degrade organic matter, which is basically the same as Example 2, and further includes an acidic solution storage tank 202 and an alkaline solution storage tank 203, the acidic solution storage tank 202 and the alkaline solution storage tank 203 are symmetrically fixedly connected to one side of the treatment tank 1, and the acidic solution storage tank 202 and the alkaline solution storage tank 203 are both plugged with an inlet pipe 204 and an outlet pipe 205, and the treatment tank 1 is located between the acidic solution storage tank 202 and the alkaline solution storage tank 203. A three-way pipe 206 is provided between the acidic solution storage tank 202 and the alkaline solution storage tank 203, and the two air inlets of the three-way pipe 206 are respectively connected to the two outlet pipes 205, and the air outlet of the three-way pipe 206 is connected to the air inlet of the jet pipe 2, and a one-way valve is provided in the two air inlets of the three-way pipe 206.

[0037] When the sewage mainly contains organic acidic and alkaline substances, it may be more beneficial to purify the sewage by adjusting the sewage to a slightly acidic environment. At this time, gas can be introduced into the acid solution storage tank 202 through the air inlet pipe 204, and then the acid solution will acid wash the gas to reduce the pH value of the gas. Therefore, when the gas enters the sewage through the nozzle 201 of the jet pipe 2, the pH value of the sewage can be adjusted, so that when ultrasonic cavitation treatment is performed under acidic conditions, some organic pollutants can evaporate into the cavitation bubbles. For example, for ultrasonic degradation of some organic acidic and alkaline substances, when the pH value of the solution is When the particle size is small, organic matter exists in the form of molecules and is more volatile. After these organic molecules enter the cavitation bubble, they are directly thermally decomposed in the cavitation bubble. At the same time, they can undergo oxidation reaction with the free radicals generated by cavitation in the sewage at the gas-liquid interface of the cavitation bubble, thereby making the degradation efficiency relatively high. For some sewage containing metal ions, in an acidic environment, the existence form of metal ions may be more conducive to interacting with the active substances generated by ultrasound. For example, the complexes formed by some heavy metal ions may be more easily destroyed under acidic conditions, thereby causing the heavy metal ions to precipitate or be oxidized and removed, thereby improving the treatment effect of sewage.

[0038] If it is oily wastewater or acid dye wastewater, etc., appropriate alkaline adjustment may be more helpful for treatment. When the wastewater needs to be alkaline adjusted, gas can be introduced into the alkaline solution storage tank 203 through the air inlet pipe 204, and then the alkaline solution will increase the pH value of the gas, so that when the gas enters the wastewater through the nozzle 201 of the jet pipe 2, the pH value of the wastewater can be increased and adjusted, so that when the wastewater is subjected to ultrasonic cavitation treatment, for example, for some wastewater containing acidic pollutants (such as acid dyes), appropriate alkaline conditions can neutralize the acidic pollutants and change the chemical properties of the pollutants, thereby facilitating ultrasonic degradation. At the same time, when treating oily wastewater, alkaline conditions are helpful for demulsification of emulsified oil. Under the action of ultrasound, the alkaline environment can change the charge properties of the oil droplet surface, prompting the oil droplets to aggregate, and can also react with the acidic components in the oil, which is beneficial to the subsequent separation and degradation process.

[0039] Example 4: Reference Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7A treatment device for wastewater containing refractory organic matter is basically the same as Example 3, and further, a slag discharge port 105 is opened on one side of the treatment pool 1, a guide plate 106 is fixedly connected in the treatment pool 1, and the lower end of the guide plate 106 is fixedly connected to the lower end of the slag discharge port 105, and a fixed plate 3 is fixedly connected to the lower end of the side of the treatment pool 1 away from the slag discharge port 105, and two fixed rods 302 are symmetrically fixedly connected to the fixed plate 3, and the upper end of the fixed rod 302 is fixedly connected to the limit block 303, and the limit block 303 is fixedly connected to the upper end of the fixed rod 302. The upper surface of 3 is flush with the upper surface of the guide plate 106, and the floating plate 301 is slidably connected to the two fixing rods 302. The floating plate 301 is provided with a groove used in conjunction with the limit block 303. A movable scraper 502 for scraping floating impurities is provided at the upper end of the interior of the treatment pool 1. The lower end surface of the scraper 502 is on the same horizontal plane as the upper end surface of the guide plate 106. A pulling component for pulling the floating plate 301 down into the water is provided between the jet pipe 2 and the three-way pipe 206.

[0040] A motor 5 is fixedly installed on the upper end of one side of the treatment pool 1, and a screw rod 501 is rotatably connected to the upper end of the inner part of the treatment pool 1. The end of the screw rod 501 close to the motor 5 is fixedly connected to the output end of the motor 5. The scraper 502 is slidably connected in the treatment pool 1 and is threadedly connected to the screw rod 501.

[0041] The pulling assembly includes a circular shell 4, a rotating shaft 401, a blade 402, a pulley 403 and a pull rope 404. The circular shell 4 is fixedly installed in the treatment pool 1 at a position close to the air inlet of the jet pipe 2. The air outlet of the three-way pipe 206 is connected to the air inlet of the circular shell 4, and the air inlet of the jet pipe 2 is connected to the air outlet of the circular shell 4. The rotating shaft 401 is rotatably connected in the circular shell 4. The blade 402 is fixedly connected to the rotating shaft 401 at equidistant intervals around the circumference. Both ends of the rotating shaft 401 extend out of the circular shell 4 and are fixedly connected to the pulley 403. One end of the pull rope 404 is fixedly connected to the pulley 403, and the other end of the pull rope 404 passes through the fixed plate 3 upward and is fixedly connected to the floating plate 301.

[0042] When the acidic gas or alkaline gas is transported into the three-way pipe 206, it will first be transported into the circular shell 4 through the three-way pipe 206, and then the blade 402 will drive the rope wheel 403 to rotate through the rotating shaft 401 under the impact of the airflow, and then the rope wheel 403 will wrap and store the pull rope 404, and then the floating plate 301 will overcome the buoyancy of the water and move downward under the pulling action of the pull rope 404, and when the floating plate 301 contacts the fixed plate 3, the blade 402 will stop rotating. Figure 7As shown, since the side of the blade 402 away from the rotating shaft 401 does not contact the inner wall of the circular shell 4, after the blade 402 stops rotating, the gas can still enter the injection pipe 2 through the circular shell 4, and the blade 402 will always limit the floating plate 301 under the continuous impact of the gas.

[0043] When the ultrasonic treatment of the wastewater containing difficult-to-degrade organic matter is completed, or there are too many impurities floating on the water surface that need to be scraped and cleaned, the air supply to the jet pipe 2 will be stopped, and the limit of the floating plate 301 will be released. Then, the floating plate 301 will float upward rapidly along the fixed rod 302 under the action of the buoyancy of the water, so that the impurities can be lifted upward and separated from the water surface with the cooperation of the guide plate 106, and then the motor 5 will be started to drive the scraper 502 to move through the screw rod 501, so that the impurities can be scraped onto the guide plate 106, and then the impurities can be moved out of the treatment tank 1 through the slag discharge port 105 along the inclined surface of the guide plate 106.

[0044] It should be noted that, since there are light impurities and heavier impurities floating on the water surface, when the jet pipe 2 stops jetting and no bubbles are generated to lift the heavier impurities, the heavier impurities will sink. Since the floating plate 301 will move upward quickly after contact restriction, the heavier impurities will be lifted to the water surface under the action of the floating plate 301, thereby avoiding the sinking of the heavier impurities to the bottom and effectively improving the effect of separating impurities from water.

[0045] It should be further explained that the floating plate 301 is a perforated plate with filter holes. When the floating plate 301 moves upward and contacts the guide plate 106, since the water surface is close to the upper end surface of the guide plate 106, when the floating plate 301 moves upward, it will inevitably drive a part of the water to move upward, so that when the floating plate 301 separates impurities from water, the impurities and a part of the water will be pushed upward together, which will cause a part of waste, and the floating plate 301 may also be unable to move above the water surface under the action of gravity of this part of water. Therefore, by designing the floating plate 301 as a perforated plate with filter holes, when the floating plate 301 moves upward, the water can easily pass through the floating plate 301, so that the floating plate 301 can be easily moved above the water surface and reduce water waste.

[0046] Example 5: Reference Figure 4 , Figure 7 , a treatment device for wastewater containing difficult-to-degrade organic matter, is basically the same as Example 4, and further, the limit block 303 is located on the magnetic block, and a magnetic ring 304 that magnetically attracts the limit block 303 is embedded in the groove of the floating plate 301.

[0047] When the limit on the floating plate 301 is released and the floating plate 301 rises to the water surface, the floating plate 301 will be firmly located on the water surface under the magnetic attraction of the magnetic block and the magnetic ring 304, thereby improving the stability of the floating plate 301 and preventing the floating plate 301 from shifting up and down due to lack of limit when the scraper 502 is scraping impurities on the floating plate 301, thereby affecting the adequacy of scraping impurities.

[0048] Example 6: Reference Figure 3 , Figure 4 , a treatment device for wastewater containing difficult-to-degrade organic matter, is basically the same as Example 5, and further, a shaking plate 107 is rotatably connected to the guide plate 106 through a rotating shaft, and a slag discharge port 105 extends from one end of the shaking plate 107 away from the rotating shaft.

[0049] There are multiple push rods 108 equidistantly and slidingly connected to the guide plate 106. The push rods 108 can only move up and down at a certain position on the guide plate 106. The upper end of the push rod 108 is against the bottom of the shaking plate 107. A telescopic spring 109 is sleeved on the push rod 108. The upper and lower ends of the telescopic spring 109 are respectively fixedly connected to the shaking plate 107 and the guide plate 106. The push rod 108 passes downward through the guide plate 106 and is fixedly connected to a push plate 1010 at one end.

[0050] When the gas injected into the wastewater through the nozzle 201 by the jet pipe 2 generates bubbles floating upward, when the bubbles come into contact with the push plate 1010, the push plate 1010 will drive the shaking plate 107 to move back and forth up and down through the push rod 108 and with the cooperation of the telescopic spring 109 under the fluctuation of a large number of bubbles, thereby driving the shaking plate 107 to shake, so that impurities can be quickly discharged from the treatment tank 1 through the slag discharge port 105 along the inclined surface of the shaking plate 107, thereby improving the discharge rate of impurities.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above with a preferred embodiment, it is not used to limit the present invention.

Claims

1. A treatment device for wastewater containing refractory organic matter, characterized in that: The invention comprises a treatment pool (1), wherein the lower ends of both sides of the treatment pool (1) are respectively connected to a water inlet pipe (101) and a drain pipe (102), and further comprises: A plurality of ultrasonic transducers (103) are equidistantly installed at the lower end of the treatment pool (1), and the input end of the ultrasonic transducer (103) is electrically connected to the output end of the ultrasonic generator via a cable; The vibration end of the ultrasonic transducer (103) extends upward into the treatment tank (1) and is fixedly connected to a vibrator (104); An air jet pipe (2) is fixedly connected to the treatment pool (1) at a position above the vibrator (104) via a support rod; The air injection pipe (2) is connected to a plurality of nozzles (201) at equal intervals and facing downwards.

2. A treatment device for wastewater containing refractory organic matter according to claim 1, characterized in that: The nozzle (201) is arranged at a position close to the vibrator (104).

3. The device for treating wastewater containing refractory organic matter according to claim 1, characterized in that: The treatment tank (1) further comprises an acidic solution storage tank (202) and an alkaline solution storage tank (203), wherein the acidic solution storage tank (202) and the alkaline solution storage tank (203) are symmetrically fixedly connected to one side of the treatment tank (1), wherein an air inlet pipe (204) and an air outlet pipe (205) are inserted into the acidic solution storage tank (202) and the alkaline solution storage tank (203), wherein a three-way pipe (206) is arranged between the acidic solution storage tank (202) and the alkaline solution storage tank (203), wherein two air inlets of the three-way pipe (206) are respectively connected to two air outlet pipes (205), and an air outlet of the three-way pipe (206) is connected to an air inlet of the air injection pipe (2), and a one-way valve is arranged in each of the two air inlets of the three-way pipe (206).

4. A treatment device for wastewater containing refractory organic matter according to claim 3, characterized in that: A slag discharge port (105) is provided on one side of the treatment pool (1), a guide plate (106) is fixedly connected inside the treatment pool (1), the lowermost end of the guide plate (106) is fixedly connected to the lower end of the slag discharge port (105), a fixing plate (3) is fixedly connected to the lower end of the side of the treatment pool (1) away from the slag discharge port (105), two fixing rods (302) are symmetrically fixedly connected to the fixing plate (3), the upper end of the fixing rod (302) is fixedly connected to a limiting block (303), the upper surface of the limiting block (303) is symmetrical to the guide plate (106), and the fixing plate (302) is fixedly connected to the upper end of the fixing rod (302). ), the two fixing rods (302) are slidably connected to a floating plate (301), the floating plate (301) is provided with a groove for use with a limit block (303), a movable scraper (502) for scraping floating impurities is arranged at the upper end of the interior of the treatment pool (1), the lower end surface of the scraper (502) and the upper end surface of the guide plate (106) are on the same horizontal plane, and a pulling component for pulling the floating plate (301) down into the water is arranged between the jet pipe (2) and the three-way pipe (206).

5. A treatment device for wastewater containing refractory organic matter according to claim 4, characterized in that: A motor (5) is fixedly mounted on the upper end of one side of the treatment tank (1); a screw rod (501) is rotatably connected to the inner upper end of the treatment tank (1); an end of the screw rod (501) close to the motor (5) is fixedly connected to the output end of the motor (5); and the scraper (502) is slidably connected in the treatment tank (1) and is threadedly connected to the screw rod (501).

6. The device for treating wastewater containing refractory organic matter according to claim 4, characterized in that: The pulling assembly comprises a circular shell (4), a rotating shaft (401), a blade (402), a rope pulley (403) and a pull rope (404); the circular shell (4) is fixedly installed in the treatment pool (1) at a position close to the air inlet of the jet pipe (2); the air outlet of the three-way pipe (206) is connected to the air inlet of the circular shell (4); the air inlet of the jet pipe (2) is connected to the air outlet of the circular shell (4); the rotating shaft (401) is rotatably connected in the circular shell (4); the blade (402) is fixedly connected to the rotating shaft (401) at circumferentially equidistant distances; both ends of the rotating shaft (401) extend out of the circular shell (4) and are fixedly connected to the rope pulley (403); one end of the pull rope (404) is fixedly connected to the rope pulley (403); the other end of the pull rope (404) passes through the fixed plate (3) upward and is fixedly connected to the floating plate (301).

7. The device for treating wastewater containing refractory organic matter according to claim 4, characterized in that: The limit block (303) is located on the magnetic block, and a magnetic ring (304) that is mutually magnetically attracted to the limit block (303) is embedded in the groove of the floating plate (301).

8. The device for treating wastewater containing refractory organic matter according to claim 4, characterized in that: The guide plate (106) is rotatably connected to a shaking plate (107) via a rotating shaft, and a slag discharge port (105) extends from one end of the shaking plate (107) away from the rotating shaft.

9. The device for treating wastewater containing refractory organic matter according to claim 8, characterized in that: The guide plate (106) is equidistantly and slidably connected to a plurality of push rods (108); the upper ends of the push rods (108) are in contact with the bottom of the shaking plate (107); a telescopic spring (109) is sleeved on the push rods (108); the upper and lower ends of the telescopic spring (109) are respectively fixedly connected to the shaking plate (107) and the guide plate (106); one end of the push rod (108) that passes downward through the guide plate (106) is fixedly connected to a push plate (1010).

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