Micro-electrolysis sewage treatment device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a micro-electrolysis sewage treatment device. The micro-electrolysis sewage treatment device comprises a reaction tank body, a stirring paddle driven by a driving motor is arranged in the reaction tank body, a stirring shaft is arranged between the driving motor and the stirring paddle, a mixing scraping plate is connected to the stirring shaft, a main semispherical disperser is arranged in the reaction tank body, and the main semispherical disperser is connected with the driving motor. An upper-layer micro-electrolysis filler area, a lower-layer micro-electrolysis filler area and a vertical aeration plate are sequentially arranged below the main hemispherical disperser, the mixed scraping plate is positioned between the upper-layer micro-electrolysis filler area and the lower-layer micro-electrolysis filler area, a temperature control sleeve is arranged on the outer side of the reaction tank body, and the reaction tank body is connected with a circulating discharge pump. According to the device, the main hemispherical disperser and the auxiliary hemispherical disperser are arranged, so that sewage can be uniformly dispersed into a micro-electrolysis filler area, the contact area between the sewage and the filler is increased, and the micro-electrolysis reaction is promoted to be more fully carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a micro-electrolysis sewage treatment device. Background Art

[0002] The oil processing industry is a key component of the energy sector. During crude oil extraction, refining and subsequent product processing, a large amount of sulfur-containing wastewater is generated. This type of wastewater not only contains high concentrations of sulfides, such as hydrogen sulfide and mercaptans, but also contains a variety of pollutants such as petroleum substances and heavy metal ions. If sulfur-containing wastewater is directly discharged without effective treatment, it will cause serious pollution to the environment and threaten the ecological balance and human health.

[0003] There are many problems with existing devices when treating sulfur-containing wastewater in the petroleum processing industry. First, the reaction treatment efficiency is low. The complex components in the sulfur-containing wastewater will inhibit the micro-electrolysis reaction, resulting in poor removal of sulfides and other pollutants, making it difficult to meet increasingly stringent environmental emission standards. Second, the micro-electrolysis process is prone to scaling. Sulfides, petroleum substances in the wastewater, and iron ions produced by the micro-electrolysis reaction will be deposited on the surface of the micro-electrolysis filler to form a scale layer, which hinders the full contact between the wastewater and the filler, reduces the reaction efficiency, and requires frequent cleaning or replacement of the filler, increasing the operating cost. Third, the discharge pump has a high pressure and sampling is difficult. In order to ensure that the treated wastewater can be discharged smoothly and subsequently treated, the discharge pump needs to provide a large pressure, but this makes it difficult to obtain representative water samples during sampling, affecting the accurate evaluation of the treatment effect and not conducive to timely adjustment of the treatment process. Utility Model Content

[0004] In view of the above shortcomings in the prior art, the purpose of the utility model is to provide a micro-electrolysis sewage treatment device, which can evenly disperse sewage into the micro-electrolysis filler area by setting a main hemispherical disperser and an auxiliary hemispherical disperser, increase the contact area between the wastewater and the filler, and promote the micro-electrolysis reaction to proceed more fully. At the same time, the stirring paddle is continuously stirred under the drive of the driving motor, further strengthening the mass transfer process, thereby effectively improving the removal efficiency of sulfide and other pollutants in sulfur-containing wastewater, ensuring that the treated wastewater can better meet environmental emission standards.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The micro-electrolysis sewage treatment device comprises a reaction tank body, wherein a stirring paddle driven by a driving motor is arranged inside the reaction tank body, a stirring shaft is arranged between the driving motor and the stirring paddle, a mixing scraper plate is connected to the stirring shaft, a main hemispherical disperser is arranged inside the reaction tank body, an upper micro-electrolysis packing area, a lower micro-electrolysis packing area and a vertical aeration plate are arranged in sequence below the main hemispherical disperser, the mixing scraper plate is located between the upper micro-electrolysis packing area and the lower micro-electrolysis packing area, a temperature control sleeve is arranged on the outside of the reaction tank body, and a circulating discharge pump is connected to the reaction tank body.

[0007] The driving motor provides power to drive the stirring paddle to rotate at high speed, which can form a strong stirring flow field in the reaction tank, so that the wastewater and micro-electrolysis filler are fully mixed, the mass transfer efficiency is improved, and the micro-electrolysis reaction effect is enhanced.

[0008] The mixing scraper is installed on the stirring shaft and located between the upper and lower micro-electrolysis filler areas. As the stirring shaft rotates, it can scrape off the dirt on the surface of the micro-electrolysis filler in time to prevent scaling, maintain the high efficiency of the micro-electrolysis reaction, and extend the service life of the micro-electrolysis filler.

[0009] It also includes a blower. The temperature control sleeve is connected to a heat exchange tank through a pipeline. The heat exchange tank is provided with a heat exchange tank coil. The blower is connected to the vertical aeration plate through the heat exchange tank coil. The temperature control sleeve is connected to a temperature control water inlet pipeline.

[0010] An auxiliary hemispherical disperser is arranged between the main hemispherical disperser and the upper micro-electrolysis filler area. Both the main hemispherical disperser and the auxiliary hemispherical disperser have arc surfaces facing upwards. The outer edge of the arc surface of the main hemispherical disperser and the pole of the auxiliary hemispherical disperser are on the same vertical line.

[0011] The main hemispherical disperser and the auxiliary hemispherical disperser are both curved upwards, and the outer edge of the main hemispherical disperser and the pole of the auxiliary hemispherical disperser are on the same vertical line. This structural design can evenly disperse the wastewater entering the reaction tank, avoid local water flow concentration, ensure that the micro-electrolysis reaction is carried out evenly in the entire packing area, and improve the treatment effect.

[0012] The vertical aeration plate is connected to the blower and introduces air through the heat exchange tank coil. It is installed vertically at the bottom of the reaction tank and can evenly aerate the wastewater, provide sufficient oxygen for the micro-electrolysis reaction, promote the redox reaction, and enhance the treatment capacity of sulfur-containing wastewater.

[0013] A primary feed inlet and a secondary feed inlet are arranged directly above the main hemispherical disperser, and both the primary feed inlet and the secondary feed inlet are connected to the sewage inlet pipeline.

[0014] The upper micro-electrolysis packing area and the lower micro-electrolysis packing area are both provided with vibrators, the upper edge of the mixing and scraping plate is tangent to the lower edge of the upper micro-electrolysis packing area, and the lower edge of the mixing and scraping plate is tangent to the upper edge of the lower micro-electrolysis packing area. The setting of the vibrator keeps the packing in a loose state, increases the contact area between the wastewater and the packing, improves the efficiency of the micro-electrolysis reaction, and effectively removes pollutants in the sulfur-containing wastewater.

[0015] A conical material collector is arranged below the reaction tank body, and the conical material collector is connected to a circulating material discharge pump through an obtuse-angle discharger, and the circulating material discharge pump is connected to a sewage inlet pipe through a return pipe.

[0016] A circulating discharge pump pipeline is arranged between the obtuse-angle discharger and the circulating discharge pump, the return pipeline is connected to the circulating discharge pump pipeline through a connecting pipeline, a sampling pipeline is connected to the connecting pipeline, and a liquid outlet pipeline is arranged on the return pipeline.

[0017] The circulating discharge pump is responsible for extracting the treated wastewater and transporting it to the subsequent treatment link. The return pipe allows part of the wastewater to flow back and mix with the new wastewater for further treatment, thus achieving cyclic treatment and improving the treatment effect. The setting of the connecting pipe and the sampling pipe facilitates the collection of water samples without affecting the pressure of the discharge pump, and facilitates real-time monitoring of the treatment effect.

[0018] The working principle of the utility model is:

[0019] Preparation stage: Turn on the blower, drive motor and circulating discharge pump to check whether all equipment is operating normally. Water of appropriate temperature is introduced into the temperature control jacket through the temperature control water inlet pipe, and the tank temperature is controlled at 25-35℃ to ensure that the micro-electrolysis reaction is carried out under the optimal temperature conditions.

[0020] Feeding stage: Sulfur-containing wastewater enters the pipeline through the sewage and enters the reaction tank from the primary feed port and the secondary feed port. The main hemispherical disperser and the auxiliary hemispherical disperser disperse the wastewater evenly and slowly enter the upper micro-electrolysis packing area and the lower micro-electrolysis packing area.

[0021] Reaction stage: The driving motor drives the stirring shaft and stirring paddle to rotate, and the mixing scraper plate rotates accordingly to stir and scrape the micro-electrolysis filler. At the same time, the blower sends air into the reaction tank through the heat exchange tank coil and the vertical aeration plate to provide oxygen for the micro-electrolysis reaction. During the micro-electrolysis reaction, the vibrator is turned on regularly, the frequency is set to 20-30Hz, and the amplitude is controlled at 5-10mm to prevent scaling of the micro-electrolysis filler.

[0022] Discharging and sampling stage: The treated wastewater flows into the conical collector under the action of gravity, and then enters the circulating discharge pump pipeline through the obtuse discharger, and is pumped out by the circulating discharge pump. Part of the wastewater is mixed with the new wastewater in the sewage inlet pipeline through the return pipeline for further treatment, and the other part is discharged through the liquid outlet pipeline. During the discharging process, water samples can be obtained from the sampling pipeline at any time for testing and analysis. Subsequent processing stage: According to the water sample test results, if the treated wastewater does not meet the discharge standards, the reaction conditions are adjusted, such as changing the aeration volume, temperature, etc., or the equipment is inspected and maintained; if it meets the standards, the device continues to operate normally.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] (1) This device can evenly disperse the sewage into the micro-electrolysis filler area by setting up the main hemispherical disperser and the auxiliary hemispherical disperser, increase the contact area between the wastewater and the filler, and promote the micro-electrolysis reaction to proceed more fully. At the same time, the stirring paddle is continuously stirred by the driving motor, further strengthening the mass transfer process, thereby effectively improving the removal efficiency of sulfide and other pollutants in the sulfur-containing wastewater, ensuring that the treated wastewater can better meet the environmental emission standards.

[0025] (2) The mixing scraper is located between the upper micro-electrolysis packing area and the lower micro-electrolysis packing area. As the stirring shaft rotates, it can scrape off the dirt deposited on the surface of the micro-electrolysis packing in time to avoid the formation of a scale layer and ensure that the micro-electrolysis reaction continues to proceed efficiently. In addition, the vibrator installed on the upper and lower micro-electrolysis packing areas can maintain a certain gap between the packings through vibration to prevent dirt accumulation, extend the service life of the micro-electrolysis packing, and reduce operating costs.

[0026] (3) The device is provided with a connecting pipe between the obtuse-angle discharger and the circulating discharge pump, and a sampling pipe is connected to the connecting pipe, and the return pipe is connected to the circulating discharge pump pipe through the connecting pipe. This design makes it easy to obtain representative water samples from the sampling pipe without affecting the normal working pressure of the discharge pump, which is convenient for accurately evaluating the wastewater treatment effect, adjusting the treatment process in time, and ensuring the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the micro-electrolysis sewage treatment device of the utility model;

[0028] Figure 2 It is a cross-sectional top view of the reaction tank body of the utility model;

[0029] In the figure: 1. reaction tank body; 2. driving motor; 3. stirring paddle; 4. mixing scraper; 5. upper micro-electrolysis packing area; 6. lower micro-electrolysis packing area; 7. main hemispherical disperser; 8. auxiliary hemispherical disperser; 9. vertical aeration plate; 10. conical collector; 11. obtuse-angle discharger; 12. stirring shaft; 13. sewage inlet pipeline; 14. primary feed inlet; 15. secondary feed inlet; 16. temperature control jacket; 17. blower; 18. heat exchange tank; 19. heat exchange tank coil; 20. temperature-controlled water inlet pipeline; 21. circulating discharge pump; 22. return pipeline; 23. liquid outlet pipeline; 24. circulating discharge pump pipeline; 25. connecting pipeline; 26. sampling pipeline; 27. vibrator. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown, the micro-electrolysis sewage treatment device includes a reaction tank body 1, a stirring paddle 3 driven by a driving motor 2 is provided in the reaction tank body 1, a stirring shaft 12 is provided between the driving motor 2 and the stirring paddle 3, a mixing scraper plate 4 is connected to the stirring shaft 12, a main hemispherical disperser 7 is provided inside the reaction tank body 1, an upper micro-electrolysis packing area 5, a lower micro-electrolysis packing area 6 and a vertical aeration plate 9 are provided below the main hemispherical disperser 7, and the mixing scraper plate 4 is located between the upper micro-electrolysis packing area 5 and the lower micro-electrolysis packing area 6, a temperature control sleeve 16 is provided on the outside of the reaction tank body 1, and a circulating discharge pump 21 is connected to the reaction tank body 1. The mixing scraper plate 4 is installed on the stirring shaft 12 and is located between the upper and lower micro-electrolysis packing areas. As the stirring shaft rotates, it can scrape off the dirt on the surface of the micro-electrolysis packing in time, prevent scaling, maintain the high efficiency of the micro-electrolysis reaction, and extend the service life of the micro-electrolysis packing. It also includes a blower 17, a temperature control jacket 16 connected to a heat exchange tank 18 through a pipeline, a heat exchange tank coil 19 is provided in the heat exchange tank 18, the blower 17 is connected to the vertical aeration plate 9 through the heat exchange tank coil 19, and a temperature control water inlet pipeline 20 is connected to the temperature control jacket 16. Figure 2As shown, an auxiliary hemispherical disperser 8 is provided between the main hemispherical disperser 7 and the upper micro-electrolysis packing area 5, and both the main hemispherical disperser 7 and the auxiliary hemispherical disperser 8 have arc surfaces facing upward, and the outer edge of the arc surface of the main hemispherical disperser 7 and the pole of the auxiliary hemispherical disperser 8 are on the same vertical line. A primary feed port 14 and a secondary feed port 15 are provided directly above the main hemispherical disperser 7, and both the primary feed port 14 and the secondary feed port 15 are connected to the sewage inlet pipe 13. A vibrator 27 is provided on both the upper micro-electrolysis packing area 5 and the lower micro-electrolysis packing area 6, and the upper edge of the mixing scraper 4 is tangent to the lower edge of the upper micro-electrolysis packing area 5, and the lower edge of the mixing scraper 4 is tangent to the upper edge of the lower micro-electrolysis packing area 6. A conical material collector 10 is provided below the reaction tank body 1, and the conical material collector 10 is connected to a circulating material discharge pump 21 through an obtuse-angled discharger 11, and the circulating material discharge pump 21 is connected to a sewage inlet pipe 13 through a return pipe 22. An inlet and outlet pump pipe 24 is provided between the obtuse-angled discharger 11 and the circulating material discharge pump 21, and the return pipe 22 is connected to the inlet and outlet pump pipe 24 through a connecting pipe 25, and a sampling pipe 26 is connected to the connecting pipe 25, and a liquid outlet pipe 23 is provided on the return pipe 22.

[0033] The above-mentioned micro-electrolysis sewage treatment device, when working, includes the following steps:

[0034] (1) Turn on the blower 17, the drive motor 2 and the circulating discharge pump 21, and check whether each device is operating normally. Water of suitable temperature is introduced into the temperature control sleeve 16 through the temperature control water inlet pipe 20, and the tank temperature is controlled at 25-35°C to ensure that the micro-electrolysis reaction is carried out under the optimal temperature conditions. (2) The sulfur-containing wastewater enters the sewage pipe 13 and enters the reaction tank body 1 from the primary feed port 14 and the secondary feed port 15 respectively. The main hemispherical disperser 7 and the auxiliary hemispherical disperser 8 disperse the wastewater evenly, so that it slowly enters the upper micro-electrolysis filler area 5 and the lower micro-electrolysis filler area 6. (3) The drive motor 2 drives the stirring shaft 12 and the stirring paddle 3 to rotate, and the mixing scraper 4 rotates accordingly to stir and scrape the micro-electrolysis filler. At the same time, the blower 17 sends air into the reaction tank body 1 through the heat exchange tank coil 19 and the vertical aeration plate 9 to provide oxygen for the micro-electrolysis reaction. During the micro-electrolysis reaction, the vibrator 27 is turned on regularly. (4) The treated wastewater flows into the conical collector 10 under the action of gravity, and then enters the circulating discharge pump pipe 24 through the obtuse discharger 11, and is pumped out by the circulating discharge pump 21. Part of the wastewater is mixed with the new wastewater in the sewage inlet pipe 13 through the return pipe 22 for further treatment, and the other part is discharged through the liquid outlet pipe 23. During the discharge process, water samples can be obtained from the sampling pipe 26 at any time for detection and analysis.

Claims

1. A micro-electrolysis sewage treatment device, characterized in that: The invention comprises a reaction tank body (1), wherein a stirring paddle (3) driven by a driving motor (2) is arranged inside the reaction tank body (1), a stirring shaft (12) is arranged between the driving motor (2) and the stirring paddle (3), a mixing scraper plate (4) is connected to the stirring shaft (12), a main hemispherical disperser (7) is arranged inside the reaction tank body (1), an upper micro-electrolysis packing area (5), a lower micro-electrolysis packing area (6) and a vertical aeration plate (9) are arranged in sequence below the main hemispherical disperser (7), the mixing scraper plate (4) is located between the upper micro-electrolysis packing area (5) and the lower micro-electrolysis packing area (6), a temperature control sleeve (16) is arranged outside the reaction tank body (1), and a circulating discharge pump (21) is connected to the reaction tank body (1); The upper micro-electrolysis filler area (5) and the lower micro-electrolysis filler area (6) are both provided with a vibrator (27), the upper edge of the mixing and scraping plate (4) is tangent to the lower edge of the upper micro-electrolysis filler area (5), and the lower edge of the mixing and scraping plate (4) is tangent to the upper edge of the lower micro-electrolysis filler area (6).

2. The micro-electrolysis sewage treatment device according to claim 1, characterized in that: The invention also comprises a blower (17), a temperature control jacket (16) connected to a heat exchange tank (18) via a pipeline, a heat exchange tank coil (19) being arranged in the heat exchange tank (18), the blower (17) being connected to the vertical aeration plate (9) via the heat exchange tank coil (19), and a temperature control water inlet pipeline (20) being connected to the temperature control jacket (16).

3. The micro-electrolysis sewage treatment device according to claim 1, characterized in that: An auxiliary hemispherical disperser (8) is provided between the main hemispherical disperser (7) and the upper micro-electrolysis filler area (5); both the main hemispherical disperser (7) and the auxiliary hemispherical disperser (8) have arc surfaces facing upward, and the outer edge of the arc surface of the main hemispherical disperser (7) and the pole of the auxiliary hemispherical disperser (8) are on the same vertical line.

4. The micro-electrolysis sewage treatment device according to claim 1, characterized in that: A primary feed inlet (14) and a secondary feed inlet (15) are provided directly above the main hemispherical disperser (7), and both the primary feed inlet (14) and the secondary feed inlet (15) are connected to the sewage inlet pipe (13).

5. The micro-electrolysis sewage treatment device according to claim 4, characterized in that: A conical material collector (10) is provided below the reaction tank body (1). The conical material collector (10) is connected to a circulating material discharge pump (21) via an obtuse-angle discharger (11). The circulating material discharge pump (21) is connected to a sewage inlet pipe (13) via a return pipe (22).

6. The micro-electrolysis sewage treatment device according to claim 5, characterized in that: An inlet and outlet pump pipeline (24) is provided between the obtuse-angle discharger (11) and the circulating discharge pump (21); the return pipeline (22) is connected to the inlet and outlet pump pipeline (24) via a connecting pipeline (25); a sampling pipeline (26) is connected to the connecting pipeline (25); and a liquid outlet pipeline (23) is provided on the return pipeline (22).

Images