A sewage aeration treatment device

Abstract

The utility model discloses a sewage aeration treatment device, including DCS control center, aeration tank and be located on aeration tank's water inlet, water outlet, waste outlet, air inlet and emptying, and the water inlet is connected the export of filter processor through the water inlet pipeline, is installed with on -line liquid flowmeter, COD on -line monitor and dissolved oxygen on -line monitor A on the water inlet pipeline, and the inlet of filter processor is connected sewage feed pipeline through sewage feed pump, and the water outlet is connected water outlet pipeline, and is installed with dissolved oxygen on -line monitor B on water outlet pipeline, and the air inlet is connected air inlet pipeline through on -line gas flowmeter, and the bottom of aeration tank is equipped with aerator, and the lower end of aerator is connected air inlet, and on -line liquid flowmeter, COD on -line monitor, dissolved oxygen on -line monitor A, dissolved oxygen on -line monitor B have remote function and are connected to DCS control center, the utility model has the advantages of good processing effect, high degree of automation, high processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater purification and treatment technology, and specifically relates to a wastewater aeration treatment device. Background Technology

[0002] With societal progress and industrial development, industrial water consumption has increased significantly, inevitably generating large amounts of wastewater with high COD values. Current wastewater treatment methods primarily employ aeration. Aeration involves artificially introducing air into a biological aeration device using appropriate equipment to achieve the desired effect. Aeration not only ensures sufficient oxygen contact between the liquid and air but also accelerates the transfer of oxygen from the air into the liquid due to liquid agitation, thus achieving oxygenation. Furthermore, aeration prevents suspended solids from settling and enhances the contact between organic matter, microorganisms, and dissolved oxygen, thereby degrading organic matter and reducing the COD value of the wastewater.

[0003] In existing technologies, some aeration devices use a single-sided aeration pipe to introduce oxygen into the water. This results in large bubbles and poor dissolved oxygen concentration, requiring more time to promote microbial activity and organic matter degradation, thus reducing wastewater treatment efficiency. Furthermore, a large amount of polymers and impurities also hinders microbial degradation. Additionally, existing wastewater aeration treatment equipment suffers from low automation, slow operation, and incomplete real-time water quality monitoring, making it difficult to achieve optimal wastewater treatment results. Therefore, to address the problems of incomplete wastewater aeration treatment, low dissolved oxygen levels, high impurity content, low automation, and delayed data analysis, developing a highly automated and efficient wastewater aeration treatment device is crucial. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wastewater aeration treatment device with good treatment effect, high degree of automation and high treatment efficiency.

[0005] The purpose of this utility model is achieved as follows: A wastewater aeration treatment device includes a DCS control center, an aeration tank, and an inlet, outlet, waste discharge port, air inlet, and vent outlet located on the aeration tank. The inlet is connected to the outlet of a filter processor via an inlet pipe. An online liquid flow meter, an online COD monitor, and an online dissolved oxygen monitor A are installed on the inlet pipe. The inlet of the filter processor is connected to a wastewater feed pipe via a wastewater feed pump. The outlet is connected to an outlet pipe, and an online dissolved oxygen monitor B is installed on the outlet pipe. The air inlet is connected to an air inlet pipe via an online gas flow meter. An aerator is provided at the bottom of the aeration tank, and the lower end of the aerator is connected to the air inlet. The online liquid flow meter, the online COD monitor, the online dissolved oxygen monitor A, and the online dissolved oxygen monitor B have remote transmission capabilities and are connected to the DCS control center.

[0006] Preferably, the aerator is a hollow disc, and the upper end of the hollow disc is provided with a number of corresponding spherical air outlets through a number of air pipes, and a number of air outlet holes are distributed on the spherical air outlets.

[0007] Preferably, the diameter of the air outlet is 1-3 mm.

[0008] Preferably, the hollow disc is welded and fixed to the inner wall of the aeration tank by support rods.

[0009] Preferably, the filter processor uses a filter screen, filter bag, or plate filter press.

[0010] Preferably, the filter processor uses a filter bag made of polytetrafluoroethylene.

[0011] Preferably, the aeration tank is provided with a stirring shaft and a plurality of stirring blades arranged around the stirring shaft above the aerator. The stirring blades are inclined at 45° to the stirring shaft. The aeration tank is provided with a stirring motor that provides rotational power to the stirring shaft. The stirring motor is connected to the DCS control center.

[0012] Preferably, the stirring motor is a variable frequency motor.

[0013] Preferably, the aeration tank is equipped with an online thermometer and a cooling jacket, the cooling jacket is equipped with a cooling water inlet and a cooling water outlet, and the online thermometer has a remote transmission function and is connected to the DCS control center.

[0014] Due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: This utility model uses a filter processor and an aerator located at the bottom of the aeration tank. The filter processor can filter out high molecular polymers and large particulate impurities in the wastewater, reducing their impact on aeration treatment and assisting in improving the wastewater aeration treatment effect. The aerator located at the bottom of the aeration tank can effectively increase the contact area between the bubbles and the wastewater, which is more conducive to improving the wastewater aeration treatment effect. This utility model uses a DCS control center, an online liquid flow meter, an online COD monitor, an online dissolved oxygen monitor A, an online dissolved oxygen monitor B, and an online gas flow meter. The online liquid flow meter, the online COD monitor, the online dissolved oxygen monitor A, the online dissolved oxygen monitor B, and the online gas flow meter with remote transmission function can provide the DCS control center with real-time remote monitoring and analysis data. Based on the comparison and analysis results of the data before and after, the DCS control center automatically remotely controls and adjusts the influent flow rate, air influent flow rate, etc., which is convenient, fast, and highly automated. In summary, this utility model has the advantages of good treatment effect, high degree of automation, and high treatment efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the aerator of this utility model.

[0017] In the diagram: 1. Sewage feed pipe; 2. Sewage feed pump; 3. Filter processor; 4. Online liquid flow meter; 5. COD online monitor; 6. Dissolved oxygen online monitor A; 7. Water inlet pipe; 8. Water inlet; 9. Online thermometer; 10. Agitator motor; 11. Exhaust port; 12. Cooling water outlet; 13. Dissolved oxygen online monitor B; 14. Water outlet; 15. Water outlet pipe; 16. Air inlet pipe; 17. Online gas flow meter; 18. Air inlet; 19. Waste outlet; 20. Aerator; 21. Cooling water inlet; 22. Support rod; 23. Agitator blades; 24. Agitator shaft; 25. Aeration tank; 26. Air pipe; 26. Spherical air outlet; 27. Air outlet hole. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 As shown, this utility model provides a sewage aeration treatment device, which is mainly used to solve the problems of incomplete sewage aeration treatment, low dissolved oxygen, many impurities, low degree of automation, and delayed analysis data in the prior art. The device includes two parts: a sewage pretreatment system and an aeration treatment system.

[0020] The wastewater pretreatment system mainly includes a wastewater feed pump 2, a filter processor 3, an online liquid flow meter 4, an online COD monitor 5, and an online dissolved oxygen monitor A6. It is primarily used for pretreatment of wastewater, filtering out high-molecular polymers and large particulate impurities to reduce their impact on aeration, improve aeration efficiency, and measure relevant indicators online before aeration. The wastewater feed pump 2 is installed on the wastewater inlet pipe 1 and uses frequency conversion regulation. The pump outlet is connected to the filter processor 3 via a pipe. The filter processor 3 filters high-molecular polymers and large particulate impurities in the wastewater. Its main body can be a filter screen, filter bag, or plate filter press, with filter bags being preferred. Polytetrafluoroethylene (PTFE) material can be used. The filter processor 3 is connected to the inlet pipe 7, on which the online liquid flow meter 4, online COD monitor 5, and online dissolved oxygen monitor A6 are installed for online analysis and measurement of the wastewater entering the aeration system after filtration. The online liquid flow meter 4 is used to measure the flow rate of sewage in the pipeline. This flow meter features a digital display screen and is connected to the DCS control center, providing remote transmission capabilities. The online COD monitor 5 is used to analyze and measure the COD value of the sewage, providing data support for sewage treatment effectiveness. It can continuously monitor sewage, display data in real time, and has remote transmission capabilities, connecting to the DCS control center. The online dissolved oxygen monitor A6 is used to analyze and measure the amount of dissolved oxygen in the sewage, providing reference data for sewage treatment and transmitting the data to the DCS control center for comparison with the analysis data of the sewage after aeration treatment. Using this system to filter sewage before aeration treatment significantly reduces the impact of high molecular weight polymers and large particulate impurities in the sewage on the aeration process.

[0021] The aeration treatment system mainly consists of an aeration tank 25, which has a cooling jacket with a cooling water inlet 21 and a cooling water outlet 12 for cooling water to flow through. The aeration tank 25 is equipped with a water inlet 8, a water outlet 14, a waste outlet 19, an air inlet 18, and an evacuation outlet 11. The water inlet 8 is located at the top of the tank and connects to the filter processor 3 via a water inlet pipe 7. The water outlet 14 is located in the upper middle part of the tank, allowing treated wastewater to overflow and connect to an outlet pipe 15. The air inlet 18 is located at the bottom of the tank and connects to an air inlet pipe 16. The evacuation outlet 11 is located at the top of the tank for venting. The waste outlet 19 is located at the bottom of the tank for discharging accumulated suspended solids and impurities, facilitating equipment cleaning and maintenance. The aeration tank 25 is equipped with an online thermometer 9, a stirring device, and an aerator 20. The online thermometer 9 is used to measure the aeration temperature of the wastewater in the tank and has a remote data transmission function. The stirring device includes a stirring motor 10, a stirring shaft 24, and stirring blades 23. The stirring motor 10 is located above the aeration tank 25. The stirring motor 25 is a variable frequency motor, which allows for speed adjustment based on the treatment effect. The stirring blades 23 are at a 45° angle to the stirring shaft 24, facilitating the cutting of large air bubbles and improving the wastewater aeration effect. The aerator 20 is located at the bottom of the aeration tank 25. The aerator 20 is a circular, hollow disc. An air inlet pipe 16 is connected to the bottom of the disc via an air inlet 18. Several spherical air outlets 27 are installed on the disc via air pipes 26, evenly distributed. Several air outlet holes 28 with a diameter of 1-3 mm are evenly distributed on the spherical air outlets 27, greatly reducing the size of air bubbles and increasing the contact area between air bubbles and wastewater, which is more conducive to improving the wastewater aeration effect. The edge of the aerator 25 is welded and fixed to the inner wall of the aeration tank 25 via support rods 22. An online gas flow meter 17 is installed on the air inlet pipe 16 to measure the air flow rate and has a remote transmission function. The outlet 14 of the aeration tank 25 is connected to the outlet pipe 15. An online dissolved oxygen monitor B13 is installed on the outlet pipe 15 to measure the oxygen content of the aerated wastewater and transmit the data to the DCS control center. This data is compared with the analysis data before aeration. If the oxygen content is lower than the target value, the air flow rate, water flow rate, and stirring rate can be remotely controlled and adjusted. Multiple aeration tanks 25 can be connected in series or parallel to improve treatment efficiency while ensuring treatment effectiveness. Using this system for wastewater aeration treatment significantly improves treatment efficiency and effectiveness.

[0022] After the above installation is completed, this utility model can be put into use. Sewage enters the filter processor 3 through the sewage feed pump 2. After filtering out the high molecular organic matter and large particulate impurities in the sewage, it enters the aeration tank 25 through the water inlet pipe 7. The air introduced from the air inlet pipe 16 aerates the sewage in the aeration tank 25. After the aeration treatment is completed, the sewage overflows from the water outlet pipe 15.

[0023] During this period, the DCS control center coordinates and is responsible for the unified reception, analysis, processing, and remote control of the entire unit's detection data based on the actual production and equipment operation. The DCS control center controls the wastewater feed flow rate via the frequency-controlled wastewater feed pump 2. Control valves are installed at the inlet 8, outlet 14, and air inlet 18, allowing the DCS control center to control the influent, effluent, and air flow rates during aeration. Control valves are also installed at the vent 11 and waste outlet 19, enabling the DCS control center to control the venting and waste discharge processes during aeration. Control valves are installed at the cooling water inlet 21 and cooling water outlet 12, allowing the DCS control center to control the cooling water flow rates, thereby controlling the aeration temperature. The DCS control center adjusts the stirring speed using the frequency-controlled stirring motor 10.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater aeration treatment device, comprising a DCS control center, an aeration tank, and an inlet, an outlet, a waste discharge port, an air inlet, and an air outlet located on the aeration tank, characterized in that: The inlet is connected to the outlet of the filter processor via an inlet pipe. An online liquid flow meter, an online COD monitor, and an online dissolved oxygen monitor A are installed on the inlet pipe. The inlet of the filter processor is connected to a sewage inlet pipe via a sewage feed pump. The outlet is connected to an outlet pipe, and an online dissolved oxygen monitor B is installed on the outlet pipe. The air inlet is connected to an air inlet pipe via an online gas flow meter. An aerator is installed at the bottom of the aeration tank, and the lower end of the aerator is connected to the air inlet. The online liquid flow meter, the online COD monitor, the online dissolved oxygen monitor A, and the online dissolved oxygen monitor B have remote transmission capabilities and are connected to the DCS control center.

2. The wastewater aeration treatment device according to claim 1, characterized in that: The aerator is a hollow disc. The upper end of the hollow disc is provided with a number of corresponding spherical air outlets through a number of air pipes. A number of air outlet holes are distributed on the spherical air outlets.

3. The wastewater aeration treatment device according to claim 2, characterized in that: The diameter of the air outlet is 1-3 mm.

4. The wastewater aeration treatment device according to claim 2, characterized in that: The hollow disc is welded and fixed to the inner wall of the aeration tank by support rods.

5. The wastewater aeration treatment device according to claim 1, characterized in that: The filter processor uses a filter screen, filter bag, or plate filter press.

6. The wastewater aeration treatment device according to claim 5, characterized in that: The filter processor uses a filter bag made of polytetrafluoroethylene.

7. The wastewater aeration treatment device according to claim 1, characterized in that: The aeration tank contains a stirring shaft and multiple stirring blades arranged around the stirring shaft above the aerator. The stirring blades are inclined at 45° to the stirring shaft. A stirring motor that provides rotational power to the stirring shaft is located above the aeration tank and is connected to the DCS control center.

8. The wastewater aeration treatment device according to claim 7, characterized in that: The stirring motor is a variable frequency motor.

9. The wastewater aeration treatment device according to claim 1, characterized in that: The aeration tank is equipped with an online thermometer and a cooling jacket. The cooling jacket is equipped with a cooling water inlet and a cooling water outlet. The online thermometer has a remote transmission function and is connected to the DCS control center.

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