CN111348720B - Orifice plate-based hydrodynamic cavitation system and method for degrading antibiotics in wastewater - Google Patents
Orifice plate-based hydrodynamic cavitation system and method for degrading antibiotics in wastewater Download PDFInfo
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- CN111348720B CN111348720B CN202010180797.3A CN202010180797A CN111348720B CN 111348720 B CN111348720 B CN 111348720B CN 202010180797 A CN202010180797 A CN 202010180797A CN 111348720 B CN111348720 B CN 111348720B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention relates to a hydraulic cavitation system based on a pore plate and a method for degrading antibiotics in wastewater. The technical scheme is as follows: utilizing an orifice-based hydrodynamic cavitation system comprising the steps of: adding wastewater containing antibiotics into the degradation tank, adjusting the pH value to 3-9, controlling the temperature of the degradation tank to 30-50 ℃, starting a circulating pump, circulating the wastewater containing the antibiotics through a main circulating pipeline, and circulating the wastewater for 150min through an orifice on a pore plate. The invention has the innovation points that the orifice plate is directly utilized for carrying out the hydrodynamic cavitation degradation reaction, compared with the traditional physical treatment method, the method has the advantages of simple structure, high efficiency, thoroughness, lower cost, obvious treatment effect, no byproduct generation, no environmental pollution and suitability for large-scale treatment of the quinuclidone antibiotics in the wastewater.
Description
Technical Field
The invention belongs to the field of hydrodynamic cavitation application, and particularly relates to a method for degrading quinuclidinone antibiotics in wastewater under hydrodynamic cavitation conditions by using a pore plate as a cavitator.
Background
Antibiotics have become a more commonly used drug because they can delay and reduce bacterial infections. Antibiotics can be currently classified into: penicillins, cephalosporins, quinolones, aminoglycosides, macrolides, and the like. Due to the large use of these antibiotics, water bodies contain antibiotics. The antibiotics in the water bodies mainly come from livestock and poultry breeding, medical wastewater, pharmaceutical wastewater, domestic wastewater and the like. The antibiotic wastewater has complex components, has an inhibiting effect on microorganisms and poor biodegradability. Studies have shown that low dose, long-term antibiotic accumulation can trigger the development of resistant strains, even the appearance of superbacteria that many drugs cannot treat, leading to changes in microbial flora. These antibiotics are unsuitable in water and environment, and if not disposed of in a timely manner, not only can damage the environment and ecosystem, but also can threaten human health through drinking water. The prior antibiotic treatment methods comprise: coagulation, adsorption, air-float, biological treatment, etc. However, these conventional treatment methods have disadvantages and limitations such as high cost, low efficiency, and incomplete decomposition. None of these methods can effectively treat antibiotics, and the use of these methods often causes secondary pollution.
Disclosure of Invention
The invention provides a hydraulic cavitation system based on a pore plate and a method for degrading antibiotics in wastewater, aiming at solving the problem that a large amount of antibiotic wastewater cannot be completely, efficiently, quickly and thoroughly treated.
In order to realize the purpose, the invention adopts the technical scheme that: a hydraulic cavitation system based on a pore plate comprises a degradation pool for containing wastewater containing antibiotics, wherein a cooling cavity is arranged outside the degradation pool, the lower end of the cooling cavity is provided with a water inlet, and the upper end of the cooling cavity is provided with a water outlet; the device is provided with a main circulating pipeline and a pore plate arranged in the main circulating pipeline, wherein one end of the main circulating pipeline is connected with a water outlet of the degradation tank, and the other end of the main circulating pipeline is connected with a circulating pump, a throttle valve I, a flowmeter, a pressure gauge I, the pore plate, a pressure gauge II and a throttle valve II in sequence and then enters the upper end of the degradation tank; an auxiliary circulating pipeline is arranged, one end of the auxiliary circulating pipeline is connected with the main circulating pipeline, the starting end of the auxiliary circulating pipeline is arranged between the circulating pump and the throttle valve I, the other end of the auxiliary circulating pipeline is connected with the throttle valve III and then extends into the degradation tank, and the terminal end of the auxiliary circulating pipeline is arranged below the liquid level of the wastewater in the degradation tank; the pore plate is provided with 1-100 orifices through which wastewater flows.
Furthermore, in the above hydrodynamic cavitation system based on the orifice plate, the thickness of the orifice plate is 2-6 mm.
Further, in the above-mentioned hydrodynamic cavitation system based on an orifice plate, the orifice is square, circular, triangular or slit-shaped.
Further, in the above-mentioned hydrodynamic cavitation system based on the orifice plate, the area of the water inlet end of the orifice is equal to the area of the water outlet end.
Further, in the above-mentioned hydrodynamic cavitation system based on the orifice plate, the area of the water inlet end of the orifice is smaller than that of the water outlet end, and the taper angle of the orifice is 30-60 °.
A method for degrading antibiotics in wastewater by using a hydraulic cavitation system based on a pore plate comprises the following steps: adding wastewater containing antibiotics into the degradation tank, adjusting the pH value to 3-9, controlling the temperature of the degradation tank to 30-50 ℃, starting a circulating pump, circulating the wastewater containing the antibiotics through a main circulating pipeline, and circulating the wastewater for 150min through an orifice on a pore plate.
Further, the method adjusts the initial concentration of the antibiotics in the wastewater containing the antibiotics to be 5.0-20.0 mg/L.
Further, the method controls the pressure at the water inlet end of the pore plate to be 1.0-5.0 bar.
Further, in the above method, the antibiotic is a quinonoid compound.
Further, in the above method, the quinuclidinone compound is norfloxacin, ofloxacin, ciprofloxacin and fleroxacin.
The invention has the beneficial effects that:
1. the invention takes the orifice plate as a cavitator, and utilizes active free radicals such as high temperature, high pressure, hydroxyl free radicals and the like generated by hydrodynamic cavitation effect to decompose part of antibiotic molecules in the wastewater into CO2、H2And O and inorganic oxide, and performing hydrodynamic cavitation degradation reaction, thereby degrading the quinuclidinone antibiotics in the wastewater.
2. The invention creatively provides a method for degrading the quininone antibiotics by utilizing hydrodynamic cavitation, and a hydrodynamic cavitation system can generate the following cavitation process through a pore plate: when the solution flows through the orifice plate, the flow velocity is suddenly increased and the transverse pressure is reduced due to the throttling effect generated by the orifice plate, when the pressure at the contraction flow section is reduced to the critical pressure of the liquid (the local pressure is lower than the saturated vapor pressure of the solution at the operation temperature), a non-soluble gas core is formed inside the solution in the contraction area, a large number of cavitation bubbles are formed along with the reduction of the pressure, and the cavitation bubbles are collapsed along with the expansion of jet flow and the gradual recovery of the pressure in the pipeline. At the moment of collapse of the cavitation bubbles, chemical effects such as high temperature, high pressure, cavitation luminescence and the like can be generated. This process releases a large amount of energy in a very short time interval (10-3m/s), resulting in local high temperatures (1000-. The resulting large number of hydroxyl radicals then diffuse into the liquid medium and are capable of oxidizing the molecules of the quinuclidinone antibiotic present in the water. The generated hydrogen free radicals are combined with dissolved oxygen in water to generate superoxide free radicals, and the quininone antibiotics can be effectively removed. In addition, strong shock waves and high-speed jet flows can be formed, and the formed physical effect degrades antibiotics.
3. The method for degrading the quinonoid antibiotic wastewater by hydrodynamic cavitation is simple and novel, is convenient to operate, has low treatment cost, generates no by-products, does not cause secondary pollution, can treat the quinonoid antibiotic wastewater on a large scale, and can effectively reduce the concentration of the quinonoid antibiotic in the wastewater.
Drawings
FIG. 1 is a schematic diagram of a hydrodynamic cavitation system based on an orifice plate in example 1.
Figure 2 is a graph of the effect of different orifice shapes on the degradation of norfloxacin for example 2.
FIG. 3 is a graph of the effect of different orifice plate thicknesses on the degradation of norfloxacin for example 2.
FIG. 4 is a graph of the effect of different orifice counts on degradation of norfloxacin for example 2.
Fig. 5a is a schematic view of an orifice angle of +45 ° for example 2.
FIG. 5b is a schematic view of an orifice angle of 0 deg. according to example 2
FIG. 5c is a schematic view of an orifice angle of-45 deg. in example 2
Figure 5d is a graph of the effect of different orifice angles on the degradation of norfloxacin for example 2.
FIG. 6 is a graph of the effect of different pH values on the degradation of norfloxacin from example 2.
Figure 7 is a graph of the effect of different initial norfloxacin concentrations on the degradation of norfloxacin from example 2.
FIG. 8 is a graph of the effect of different oxidizing agents on the degradation of norfloxacin.
Wherein, 1 is a degradation tank; 2-a cooling chamber; 3-water inlet; 4-water outlet;
5-main circulation line; 6-circulating pump; 7-throttle valve I; 8-a flow meter;
9-pressure gauge I; 10-orifice plate; 10-1-orifice; 11-pressure gauge II;
12-throttle valve II; 13-secondary circulation line; 14-throttle valve III; 15-sewage draining exit.
Detailed Description
Example 1 Orifice plate-based hydrodynamic cavitation System
As shown in fig. 1, a hydraulic cavitation system based on an orifice plate includes a degradation tank 1 for containing wastewater containing antibiotics and an orifice plate 10 having a cavitation effect.
The degradation pond 1 is equipped with cooling chamber 2 outward, and the cooling chamber 2 lower extreme is equipped with water inlet 3, and the upper end is equipped with delivery port 4, through leading into the circulating water in to cooling chamber 2, controls the temperature in degradation pond.
One end of the main circulating pipeline 5 is connected with a water outlet of the degradation tank 1, and the other end of the main circulating pipeline is connected with a circulating pump 6, a throttle valve I7, a flowmeter 8, a pressure gauge I9, a pore plate 10, a pressure gauge II 11 and a throttle valve II 12 in sequence and then enters the upper end of the degradation tank 1. A sewage outlet 15 is arranged on the degradation tank 1.
The device is provided with an auxiliary circulating pipeline 13, one end of the auxiliary circulating pipeline 13 is connected with the main circulating pipeline 5, the starting end of the auxiliary circulating pipeline is arranged between the circulating pump 6 and the throttle valve I7, the other end of the auxiliary circulating pipeline 13 is connected with the throttle valve III 14 and then extends into the degradation tank 1, and the terminal of the auxiliary circulating pipeline is arranged below the liquid level of the wastewater in the degradation tank 1.
The orifice plate 10 is installed in the main circulating pipeline 5, 1-100 orifices 10-1 are arranged on the orifice plate 10, and when wastewater flows through the orifice plate, the wastewater can only flow out through the orifices.
Preferably, the thickness of the orifice plate 10 is 2-6 mm.
Preferably, the orifice 10-1 is square, circular, triangular or slit-shaped.
Preferably, the area of the water inlet end of the orifice 10-1 is larger than or equal to the area of the water outlet end.
More preferably, the area of the water inlet end of the orifice 10-1 is larger than that of the water outlet end, and the orifice cone angle is 30-60 degrees.
Example 2A method for degrading antibiotics in wastewater
The orifice plate-based hydrodynamic cavitation system of example 1 was used to degrade quinonones antibiotics in wastewater as follows: adding wastewater containing the quininone antibiotics into the degradation tank 1, adjusting the initial concentration of the quininone antibiotics to be 5.0-20.0 mg/L, adjusting the pH to be 3-9, controlling the temperature of the degradation tank 1 to be 30-50 ℃, starting the circulating pump 6, and circulating the wastewater containing the antibiotics for 150min through the main circulating pipeline 5.
The pressure at the water inlet end of the orifice plate 10 is controlled to be 1.0-5.0 bar through the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The quinovones can be norfloxacin, ofloxacin, ciprofloxacin and fleroxacin. The following experiments are described by way of example for the degradation of norfloxacin.
The norfloxacin concentration is measured by using a UV-Vis spectrophotometer under the wavelength of K200-500 nm, and the norfloxacin concentration has a maximum absorption peak near 272nm and belongs to pi-pi electron transition of double bonds, conjugated double bonds or benzene rings. Two weaker peaks are also seen at 323nm and 327nm, which belong to the n-pi electron transitions of some of the heteroatoms with a single pair of electrons in the double bond. And (3) solving the linear relation between the concentration and the absorbance by measuring a standard curve of the concentration and the absorbance.
Percent (%) degradation of ═ C0-Ct]/C0×100
Wherein, C0Is the initial concentration (mg/L) of Norfloxacin (NOR) solution
CtIs the instantaneous concentration (mg/L) after a certain time of degradation (T).
Influence of orifice shape on hydraulic cavitation degradation of norfloxacin of (I) orifice plate
The method comprises the following steps: 0.05g of norfloxacin (analytically pure) is weighed and dissolved in water, the solution is dissolved to 5L, and norfloxacin solution with the initial concentration of 10mg/L and the pH value of 7 are obtained after even stirring and mixing. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The thickness of the pore plate is 2mm, the number of the orifices is 1, and the area of the orifices of the water inlet end and the water outlet end on the pore plate is equal.
The orifice of the orifice plate is in the shape of a circle with the diameter of 2mm, a square with the side length of 1.77mm, a triangle with the side length of 2.70mm and a slit with the length of 3.14mm and the width of 1 mm. .
The degradation effect of the orifice plates with different orifice shapes on norfloxacin is shown in fig. 2. As can be seen from figure 2, with the extension of the cycle time, the degradation efficiency of the orifice plates with the shapes of the orifices is improved, the highest degradation efficiency of norfloxacin wastewater by adopting the orifice plates with square orifices can reach 25.84% in 150 min. The preferred orifice shape of the present invention is square.
(II) influence of different pore plate thicknesses on degradation of norfloxacin by hydrodynamic cavitation
The method comprises the following steps: 0.05g of norfloxacin (analytically pure) is weighed and dissolved in water, the solution is dissolved to 5L, and norfloxacin solution with the initial concentration of 10mg/L and the pH value of 7 are obtained after even stirring and mixing. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The shape of the orifice on the orifice plate is a square with the side length of 1.77mm, the areas of the orifices at the water inlet end and the water outlet end on the orifice plate are equal, and the number of the orifices is 1.
The thickness of the orifice plate is 2mm, 4mm and 6mm respectively.
The effect of different thickness orifice plates on norfloxacin degradation is shown in figure 3. As can be seen from the graph 3, the degradation efficiency of the pore plates with different thicknesses is improved along with the prolonging of the circulation time, the highest degradation efficiency of norfloxacin wastewater is achieved by adopting the pore plates with the thickness of 4mm, and the highest degradation efficiency can reach 28.33 percent in 150 min. The preferred orifice plate thickness of the present invention is 4 mm.
Influence of number of orifices on (III) orifice plate on degradation of norfloxacin by hydrodynamic cavitation
The method comprises the following steps: 0.05g of norfloxacin (analytically pure) is weighed and dissolved in water, the solution is dissolved to 5L, and norfloxacin solution with the initial concentration of 10mg/L and the pH value of 7 are obtained after even stirring and mixing. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The orifice of the orifice plate is in the shape of a square with the side length of 1.77 mm. The orifice areas of the water inlet end and the water outlet end on the orifice plate are equal, and the thickness of the orifice plate is 4 mm.
The number of the orifices on the orifice plate is 1, 3 and 5 respectively.
The degradation effect of the number of the orifices on different pore plates on norfloxacin is shown in fig. 4, and as can be seen from fig. 4, along with the prolonging of the cycle time, the degradation efficiency of the pore plates with the number of the orifices is improved, and the highest degradation efficiency of norfloxacin wastewater by adopting the pore plate with the number of the orifices being 3 can reach 29.11%.
Influence of orifice angle on (IV) orifice plate on degradation of norfloxacin by hydrodynamic cavitation
The method comprises the following steps: 0.05g of norfloxacin (analytically pure) is weighed and dissolved in water, the solution is dissolved to 5L, and norfloxacin solution with the initial concentration of 10mg/L and the pH value of 7 are obtained after even stirring and mixing. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The orifice of the orifice plate is in the shape of a square with the side length of 1.77 mm. The number of the orifices is 1, and the thickness of the orifice plate is 4 mm.
The angles of the orifices on the orifice plate are respectively +45 degrees, 0 degree and-45 degrees.
The angle of the hole opening on the pore plate is +45 degrees: as shown in fig. 5a, the area of the water inlet end of the orifice 10-1 is smaller than the area of the water outlet end, and the orifice taper angle α is 45 °.
The angle of the upper orifice of the orifice plate is 0 degree: as shown in fig. 5b, the area of the water inlet end of the orifice 10-1 is equal to the area of the water outlet end, and the orifice cone angle is 0 °.
The angle of the upper orifice of the orifice plate is-45 degrees: as shown in fig. 5c, the area of the water inlet end of the orifice 10-1 is greater than the area of the water outlet end, and the orifice cone angle β is 45 °.
The degradation effect of the orifice plates at different orifice angles on norfloxacin is shown in fig. 5 d. As can be seen from FIG. 5d, with the extension of the cycle time, the degradation efficiency of the orifice plates at all the orifice angles is improved, and the highest degradation efficiency of norfloxacin wastewater by adopting the orifice plate with the angle of +45 degrees can reach 32.54%.
(V) influence of initial pH value on degradation of norfloxacin by hydrodynamic cavitation
The method comprises the following steps: 0.05g of norfloxacin (analytically pure) is weighed and dissolved in water, the solution is dissolved to 5L, norfloxacin solution with the initial concentration of 10mg/L is obtained after stirring and mixing evenly, and the pH is respectively adjusted to 3, 5, 7 and 9. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The orifice of the orifice plate is in the shape of a square with the side length of 1.77 mm. The area of the water inlet end of the orifice 10-1 is smaller than that of the water outlet end, the taper angle alpha of the orifice is 45 degrees, and the thickness of the orifice plate is 4mm respectively. The number of the orifices on the orifice plate is respectively 3.
The degradation effect of different initial norfloxacin pH values is shown in figure 6. As can be seen from fig. 6, the degradation efficiency of norfloxacin solution at each pH value is improved with the increase of the cycle time, and the highest degradation efficiency can reach 84.2% with norfloxacin solution at pH 3.
(VI) influence of different initial concentrations on degradation of norfloxacin by hydrodynamic cavitation
The method comprises the following steps: norfloxacin solutions with initial norfloxacin concentrations of 5, 10 and 15mg/L were prepared, respectively, and the pH was adjusted to 3. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The orifice of the orifice plate is in the shape of a square with the side length of 1.77 mm. The area of the water inlet end of the orifice 10-1 is smaller than that of the water outlet end, the taper angle alpha of the orifice is 45 degrees, and the thickness of the orifice plate is 4mm respectively. The number of the orifices on the orifice plate is respectively 3.
The degradation effect of norfloxacin solutions of different initial concentrations is shown in figure 7. As can be seen from FIG. 7, with the increase of the cycle time, the degradation efficiency of norfloxacin solution with each initial concentration is improved, and the highest degradation efficiency can reach 89.44% by using norfloxacin solution with the initial concentration of 5 mg/L.
(VII) Capture agent experiment
The method comprises the following steps: norfloxacin solutions with an initial norfloxacin concentration of 10mg/L were prepared, respectively, and the pH was adjusted to 3. Adding norfloxacin solution into the degradation tank 1, controlling the temperature of the degradation tank 1 to be 40 ℃, and starting the circulating pump 6 to circulate the norfloxacin solution through the main circulating pipeline 5 for 150 min. The pressure at the water inlet end of the orifice plate 10 is controlled to be 5.0bar by the throttle valve I7, the throttle valve II 12 and the throttle valve III 14.
The orifice of the orifice plate is in the shape of a square with the side length of 1.77 mm. The area of the water inlet end of the orifice 10-1 is smaller than that of the water outlet end, the taper angle alpha of the orifice is 45 degrees, and the thickness of the orifice plate is 4mm respectively. The number of the orifices on the orifice plate is respectively 3.
Dimethyl sulfoxide (DMSO) and p-Benzoquinone (BQ) are respectively added into the degradation pool as O2 -And OH, and the degradation rate of norfloxacin was measured under the conditions of no addition of the trapping agent and addition of the trapping agent, respectively.
The degradation effect of the addition of different radical scavengers is shown in figure 8. As can be seen from FIG. 8, the degradation rates of norfloxacin were 42.52% and 64.75% under the conditions of DMSO and BQ, respectively, indicating O2 -OH and OH both participate in the hydrodynamic cavitation process, and O2 -The effect on the degradation reaction is greater than. OH.
Claims (3)
1. A method for degrading antibiotics in wastewater is characterized in that a hydraulic cavitation system based on a pore plate is utilized, and the method comprises the following steps: adding wastewater containing antibiotics into the degradation tank (1), adjusting the pH value to 3-9, controlling the temperature of the degradation tank (1) to be 30-50 ℃, starting a circulating pump (6), circulating the wastewater containing the antibiotics through a main circulating pipeline (5), and circulating the wastewater for 150min through an orifice (10-1) on a pore plate (10); the antibiotic is norfloxacin;
the orifice-plate-based hydrodynamic cavitation system comprises a degradation tank (1) for containing wastewater containing antibiotics, wherein a cooling cavity (2) is arranged outside the degradation tank (1), a water inlet (3) is formed in the lower end of the cooling cavity (2), and a water outlet (4) is formed in the upper end of the cooling cavity; the device is provided with a main circulating pipeline (5) and a pore plate (10) installed in the main circulating pipeline (5), wherein one end of the main circulating pipeline (5) is connected with a water outlet of the degradation tank (1), and the other end of the main circulating pipeline (5) is connected with a circulating pump (6), a throttle valve I (7), a flowmeter (8), a pressure gauge I (9), the pore plate (10), a pressure gauge II (11) and a throttle valve II (12) in sequence and then enters the upper end of the degradation tank (1); an auxiliary circulating pipeline (13) is arranged, one end of the auxiliary circulating pipeline (13) is connected with the main circulating pipeline (5) and is arranged between the circulating pump (6) and the throttle valve I (7), the other end of the auxiliary circulating pipeline (13) is connected with the throttle valve III (14), then extends into the degradation tank (1), and the terminal is arranged below the liquid level of the wastewater in the degradation tank (1); the pore plate (10) is provided with 3 square orifices (10-1) for wastewater to flow through, and the side length of each square is 1.77 mm; the thickness of the pore plate (10) is 4 mm; the area of the water inlet end of the orifice (10-1) on the orifice plate is smaller than that of the water outlet end, and the taper angle alpha of the orifice is 45 degrees.
2. The method according to claim 1, wherein the initial concentration of the antibiotics in the wastewater containing the antibiotics is adjusted to be 5.0-20.0 mg/L.
3. The method according to claim 1, wherein the pressure at the water inlet end of the orifice plate (10) is controlled to be 1.0 to 5.0 bar.
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| CN112939184A (en) * | 2021-01-28 | 2021-06-11 | 辽宁大学 | Method for degrading tetracycline antibiotics in wastewater by using hydraulic cavitation system based on amplification orifice plate |
| CN112939188A (en) * | 2021-02-04 | 2021-06-11 | 辽宁大学 | Method for degrading triphenylmethane dye wastewater based on improved secondary linear orifice plate hydrodynamic cavitation system |
| CN113428933A (en) * | 2021-07-12 | 2021-09-24 | 辽宁大学 | Hydrodynamic cavitation and UV/H2O2Method for jointly degrading antibiotics in wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351285A (en) * | 2011-09-20 | 2012-02-15 | 环境保护部南京环境科学研究所 | Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone |
| CN102653419A (en) * | 2012-04-25 | 2012-09-05 | 上海交通大学 | Device for treating fish culturing waste water by means of pore plate jet flow reinforcement TiO2 thin film photocatalysis |
| CN106186179A (en) * | 2016-08-29 | 2016-12-07 | 江苏大学 | A kind of organic water based on Hydrodynamic cavitation pollutes degeneration system |
| CN110078196A (en) * | 2019-06-05 | 2019-08-02 | 中石化石油工程技术服务有限公司 | The system of Hydrodynamic cavitation and ozone Combined Treatment sour water |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7247244B2 (en) * | 2004-10-20 | 2007-07-24 | Five Star Technologies, Inc. | Water treatment processes and devices utilizing hydrodynamic cavitation |
-
2020
- 2020-03-16 CN CN202010180797.3A patent/CN111348720B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351285A (en) * | 2011-09-20 | 2012-02-15 | 环境保护部南京环境科学研究所 | Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone |
| CN102653419A (en) * | 2012-04-25 | 2012-09-05 | 上海交通大学 | Device for treating fish culturing waste water by means of pore plate jet flow reinforcement TiO2 thin film photocatalysis |
| CN106186179A (en) * | 2016-08-29 | 2016-12-07 | 江苏大学 | A kind of organic water based on Hydrodynamic cavitation pollutes degeneration system |
| CN110078196A (en) * | 2019-06-05 | 2019-08-02 | 中石化石油工程技术服务有限公司 | The system of Hydrodynamic cavitation and ozone Combined Treatment sour water |
Non-Patent Citations (1)
| Title |
|---|
| "离心泵水力空化对环丙沙星降解效果的试验研究";金文瑢;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑（月刊）》;20180615;第1、15-16、19、31页 * |
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| CN111348720A (en) | 2020-06-30 |
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