Integrated sewage treatment equipment and process thereof

Abstract

The invention relates to the technical field of sewage treatment, in particular to integrated sewage treatment equipment and a process thereof.The integrated sewage treatment equipment comprises a sewage treatment box, and a pretreatment box, a deep treatment box, a biochemical treatment box and a disinfection box are sequentially arranged in the sewage treatment box in the water flow direction; the pretreatment box is connected with a sewage pipe, a filtering grid is arranged in the sewage pipe, a pressing power generation device is arranged at the joint of the filtering grid and the sewage treatment box, and the pressing power generation device supplies power to a dosing box of the deep treatment box. The integrated sewage treatment equipment has the characteristic of recycling the kinetic energy of sewage, and solves the problems of complicated structure and high energy consumption caused by complicated process flow and multiple treatment mechanisms of the existing integrated sewage treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an integrated wastewater treatment equipment and its process. Background Art

[0002] Wastewater treatment equipment is an industrial device that can effectively treat domestic sewage and industrial wastewater in urban areas. Its main purpose is to prevent sewage and pollutants from flowing directly into water bodies, which is of great significance for improving the ecological environment, enhancing the city's image, and promoting economic development.

[0003] Integrated wastewater treatment equipment is a device that integrates multiple wastewater treatment processes. It can efficiently remove pollutants such as organic matter, inorganic matter, and heavy metals from wastewater, ensuring that the effluent meets national discharge standards. However, due to the complex process flow and numerous treatment units, integrated wastewater treatment equipment suffers from a complex structure and high energy consumption. Therefore, we propose an integrated wastewater treatment device and its process. Summary of the Invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes an integrated sewage treatment equipment and its process, which has the feature of recovering and reusing the kinetic energy of sewage, and solves the problems of complex process flow and multiple treatment mechanisms in existing integrated sewage treatment equipment, resulting in complex structure and high energy consumption.

[0005] This invention provides the following technical solution: An integrated wastewater treatment device includes a wastewater treatment tank, inside which a pretreatment tank, a deep treatment tank, a biochemical treatment tank, and a disinfection tank are arranged sequentially along the water flow direction; the pretreatment tank is connected to a wastewater pipe, and a filter screen is installed inside the wastewater pipe; a press-to-power generator is installed at the connection between the filter screen and the wastewater treatment tank, and the press-to-power generator supplies power to the dosing tank of the deep treatment tank.

[0006] Preferably, the filter screen includes a coarse screen and a fine screen; the coarse screen is connected to the pretreatment box via a press-type generator one, and the fine screen is connected to the pretreatment box via a press-type generator two. Both the press-type generator one and the press-type generator two generate electricity through the impact force of wastewater on the filter screen and the gravity of wastewater.

[0007] Preferably, the wastewater treatment tank is connected to the deep treatment tank via a water pipe. The deep treatment tank is equipped with a rotatable hollow shaft, and multiple inclined sedimentation plates are arranged on the hollow shaft. The sedimentation plates are used for rotational stirring and coagulation, as well as static sedimentation. The hollow shaft is driven to rotate by a drive mechanism.

[0008] Preferably, the dosing tank is equipped with a medicine tank, a pump body, a dosing pipe and a battery. The battery is used to power the pump body, and the pump body draws the medicine liquid from the medicine tank through the dosing pipe.

[0009] Preferably, a wastewater flow meter is installed on the sewage pipe, and a medicine flow meter is installed on the medicine delivery pipe.

[0010] Preferably, the hollow shaft is connected to the dosing pipe via a rotary joint, the dosing tank adds chemicals to the rotary joint and the hollow shaft via the dosing pipe, and each sedimentation plate on the hollow shaft has a chemical hole, and each sedimentation plate on the deep treatment tank is connected to a water pipe that communicates with the biochemical treatment tank.

[0011] Preferably, the sewage pipe is equipped with a kinetic energy recovery box, and the rotating shaft of the kinetic energy recovery box is driven by a transmission belt, with one end of the transmission belt sleeved on the first transmission wheel of the rotating shaft and the other end sleeved on the second transmission wheel of the hollow shaft.

[0012] Preferably, the kinetic energy recovery box has a cavity connected to the sewage pipe, and an impeller is installed in the cavity. The impeller is connected to the rotating shaft, and the water flow drives the impeller and the rotating shaft to rotate.

[0013] Preferably, the sewage treatment tank is equipped with a motor, and the output shaft of the motor is connected to the first transmission wheel by an electric latch. The electric latch is used to control the connection and disconnection between the output shaft and the first transmission wheel.

[0014] An integrated wastewater treatment process includes the following steps: first, large particulate solids and sediments in the wastewater are removed by a screen in a pretreatment tank; then, the wastewater is coagulated and settled in a deep treatment tank; and finally, it enters a biological treatment tank and a disinfection tank for further treatment. The kinetic energy of the water is recovered by the screen and converted into electrical energy to power the automatic dosing device in the deep treatment tank.

[0015] This invention provides an integrated wastewater treatment equipment and process. By setting up a kinetic energy recovery device in the pretreatment tank, while using a screen to remove large particulate solids and sediments from the wastewater, the kinetic energy of the water is recovered through the screen and converted into electrical energy to power the automatic dosing device in the deep treatment tank. Then, the wastewater is coagulated and precipitated in the deep treatment tank. The influent flow rate of the wastewater is proportional to the dosage of the dosing device, which can achieve stable energy recovery and reuse. This solves the problems of complex process flow and multiple treatment mechanisms in existing integrated wastewater treatment equipment, resulting in complex structure and high energy consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2This is a schematic diagram of the dosing tank structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the kinetic energy recovery box structure of the present invention.

[0019] In the diagram: 1. Wastewater treatment tank; 2. Pretreatment tank; 3. Advanced treatment tank; 4. Biochemical treatment tank; 5. Disinfection tank; 6. Wastewater pipe; 7. Coarse screen; 8. Fine screen; 9. Press-type generator one; 10. Press-type generator two; 11. Water pipe one; 12. Hollow shaft; 13. Sedimentation plate; 14. Dosing tank; 1401. Chemical tank; 1402. Pump body; 1403. Chemical delivery pipe; 1404. Battery; 1405. Chemical flow meter; 15. Wastewater flow meter; 16. Kinetic energy recovery tank; 1601. Cavity; 1602. Impeller; 17. Rotating shaft; 18. Transmission wheel one; 19. Transmission wheel two; 20. Transmission belt; 21. Chemical orifice; 22. Rotary joint; 23. Dosing pipe; 24. Water pipe two; 25. Motor. Detailed Implementation

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] This invention provides a technical solution: Example 1

[0022] like Figure 1 As shown, an integrated wastewater treatment device includes a wastewater treatment tank 1. Inside the wastewater treatment tank 1, along the water flow direction, are sequentially arranged a pretreatment tank 2, a deep treatment tank 3, a biochemical treatment tank 4, and a disinfection tank 5. The pretreatment tank 2 is connected to a wastewater pipe 6, and a filter screen is installed inside the wastewater pipe 6. The pretreatment tank 2 is used to remove large particulate solids and sediments from the wastewater, ensuring the stable operation of subsequent treatment processes. A press-to-power generator is installed at the connection between the filter screen and the wastewater treatment tank 1, and the press-to-power generator supplies power to the dosing tank 14 of the deep treatment tank 3.

[0023] The press-to-generate device generates mechanical energy through pressing, and then converts the mechanical energy into electrical energy. The working principle of the press-to-generate device is mainly based on the piezoelectric effect, which refers to the phenomenon that certain crystals produce positive and negative polarities when subjected to mechanical force, resulting in an unbalanced charge distribution, thereby generating a potential difference, achieving electrical conversion, and supplying power to the dosing tank 14.

[0024] The advanced treatment tank 3 further removes suspended solids and fine particulate matter from the wastewater through coagulation and sedimentation, improving the effluent quality. The biological treatment tank 4 employs processes such as biological contact oxidation and MBR membrane bioreactors, using the metabolism of microorganisms to decompose organic matter in the wastewater into inorganic matter, thereby purifying the water. The disinfection tank 5 uses ultraviolet sterilizers and chlorine sterilizers to kill bacteria and viruses in the wastewater, ensuring that the effluent meets national standards. Example 2

[0025] Based on Embodiment 1, the filter screen includes a coarse screen 7 and a fine screen 8. The coarse screen 7 is connected to the pretreatment tank 2 via a push-type generator 9, and the fine screen 8 is connected to the pretreatment tank 2 via a push-type generator 10. Both the push-type generator 9 and the push-type generator 10 generate electricity using the impact force of wastewater on the filter screen and the gravity of the wastewater. By setting up the coarse screen 7 and the fine screen 8, the wastewater can be filtered twice. The dual screens combined with the dual generators 25 enable two energy recovery processes, resulting in higher energy recovery and utilization efficiency. Example 3

[0026] like Figure 2 As shown in Embodiment 2, the wastewater treatment tank 1 is connected to the deep treatment tank 3 via a water pipe 11. The deep treatment tank 3 contains a rotatable hollow shaft 12, on which multiple inclined sedimentation plates 13 are mounted. When the inclined sedimentation plates 13 rotate, they drive the wastewater flow, achieving stirring and coagulation. After settling, they shorten the settling distance and improve sedimentation efficiency. The hollow shaft 12 is driven to rotate by a drive mechanism. The drive mechanism drives the hollow shaft 12 to rotate, causing the plates to lower, and settling occurs during settling.

[0027] The dosing tank 14 is equipped with a medicine tank 1401, a pump body 1402, a dosing pipe 1403 and a storage battery 1404. The storage battery 1404 is used to power the pump body 1402. The pump body 1402 can automatically draw the liquid medicine from the medicine tank 1401 through the dosing pipe 1403 and add the liquid medicine to the deep treatment tank 3 to achieve coagulation and sedimentation.

[0028] A wastewater flow meter 15 is installed on the sewage pipe 6, and a chemical flow meter 1405 is installed on the chemical delivery pipe 1403. The flow meters can simultaneously monitor the inflow of sewage into the sewage pipe 6, and then control the amount of chemicals added to the deep treatment tank 3 based on the inflow. The inflow is directly proportional to the amount of chemicals added. Although the higher the inflow, the greater the power consumption of the chemical dosing tank 14, the greater the power generation of the two generators 25, ensuring a stable power supply.

[0029] The hollow shaft 12 is connected to the dosing pipe 23 via a rotary joint 22. The dosing tank 14 adds chemicals to the rotary joint 22 and the hollow shaft 12 via the dosing pipe 23. Each sedimentation plate 13 on the hollow shaft 12 has a corresponding chemical hole 21. Each sedimentation plate 13 on the deep treatment tank 3 has a corresponding water pipe 24 connecting to the biochemical treatment tank 4. The rotary joint 22 allows the dosing tank 14 to directly add chemicals to the hollow shaft 12, which are then dispersed into the wastewater through the chemical holes 21, resulting in more uniform mixing without affecting the rotation of the hollow shaft 12 and the sedimentation plates 13. The water pipe 24 allows for efficient pumping of the settled wastewater to the biochemical treatment tank 4 for further treatment. Example 4

[0030] like Figure 3 As shown, based on Embodiment 3, a kinetic energy recovery box 16 is also provided on the sewage pipe 6. The rotating shaft 17 of the kinetic energy recovery box 16 is driven by the hollow shaft 12 through the transmission belt 20. One end of the transmission belt 20 is sleeved on the first transmission wheel 18 of the rotating shaft 17, and the other end is sleeved on the second transmission wheel 19 of the hollow shaft 12.

[0031] The kinetic energy recovery tank 16 has an internal cavity 1601 connected to the sewage pipe 6, and an impeller 1602 is installed inside the cavity 1601. The impeller 1602 is connected to the rotating shaft 17, and the water flow drives the impeller 1602 and the rotating shaft 17 to rotate. As the sewage flows through the sewage pipe 6 into the sewage treatment tank 1, the kinetic energy recovery tank 16 uses the flowing sewage to drive the impeller 1602 to rotate, which in turn drives the rotating shaft 17 to rotate. The rotating shaft 17, through the transmission belt 20, drives the hollow shaft 12 of the deep treatment tank 3 to rotate, thereby achieving stirring and coagulation. Example 5

[0032] Based on Embodiment 4, a motor 25 is installed on the sewage treatment tank 1. The output shaft of the motor 25 is connected to the transmission wheel 18 via an electric latch. The electric latch is used to control the connection and disconnection of the output shaft and the transmission wheel 18. The purpose of installing the motor 25 is to enable the hollow shaft 12 and the sedimentation plate 13 to rotate even when there is no water entering the sewage pipe 6. The electric latch (not shown in the figure) is a small electric telescopic rod that extends into the slot or anti-slip groove at the end of the rotating shaft 17, thereby enabling the motor 25 to drive the rotating shaft 17 to rotate. When the telescopic rod retracts, the output shaft of the motor 25 is disconnected from the transmission wheel 18. The output shaft of the motor 25 and the central axis of the transmission wheel 18 are at the same position.

[0033] An integrated wastewater treatment process includes the following steps: First, large particulate solids and sediments are removed from the wastewater through a screen in a pretreatment tank. Then, the wastewater undergoes coagulation and sedimentation in a deep treatment tank. Finally, the wastewater enters a biological treatment tank and a disinfection tank for further treatment. The screen recovers the kinetic energy of the water and converts it into electrical energy to power the automatic dosing device in the deep treatment tank. Furthermore, a transmission mechanism in the inlet pipe of the pretreatment tank transfers kinetic energy to the deep treatment tank, driving a stirring device to achieve coagulation.

[0034] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated sewage treatment device, comprising a sewage treatment tank (1), characterized in that: Inside the sewage treatment tank (1), a pretreatment tank (2), a deep treatment tank (3), a biochemical treatment tank (4), and a disinfection tank (5) are arranged sequentially along the water flow direction. The pretreatment tank (2) is connected to the sewage pipe (6), and a filter screen is installed inside the sewage pipe (6). A press-to-power generator is installed at the connection between the filter screen and the sewage treatment tank (1). The press-to-power generator supplies power to the dosing tank (14) of the deep treatment tank (3).

2. The integrated sewage treatment equipment according to claim 1, characterized in that: The filter screen includes a coarse screen (7) and a fine screen (8); the coarse screen (7) is connected to the pretreatment box (2) via a press-type generator one (9), and the fine screen (8) is connected to the pretreatment box (2) via a press-type generator two (10). Both the press-type generator one (9) and the press-type generator two (10) generate electricity through the impact force of wastewater on the filter screen and the gravity of wastewater.

3. The integrated sewage treatment equipment according to claim 1, characterized in that: The wastewater treatment tank (1) is connected to the deep treatment tank (3) through a water pipe (11). The deep treatment tank (3) is equipped with a rotatable hollow shaft (12) and multiple inclined sedimentation plates (13) are provided on the hollow shaft (12). The sedimentation plates (13) are used for rotating stirring coagulation and static sedimentation. The hollow shaft (12) is driven to rotate by a drive mechanism.

4. The integrated sewage treatment equipment according to claim 3, characterized in that: The dosing tank (14) is equipped with a medicine tank (1401), a pump body (1402), a medicine delivery pipe (1403) and a storage battery (1404). The storage battery (1404) is used to supply power to the pump body (1402). The pump body (1402) draws the medicine liquid from the medicine tank (1401) through the medicine delivery pipe (1403).

5. The integrated sewage treatment equipment according to claim 4, characterized in that: Wastewater flow meter (15) is installed on the sewage pipe (6), and medicine flow meter (1405) is installed on the medicine delivery pipe (1403).

6. The integrated sewage treatment equipment according to claim 5, characterized in that: The hollow shaft (12) is connected to the dosing pipe (23) via a rotary joint (22). The dosing tank (14) adds chemicals to the rotary joint (22) and the hollow shaft (12) via the dosing pipe (23). A chemical hole (21) is provided on the hollow shaft (12) corresponding to the position of each sedimentation plate (13). A water pipe (24) connected to the biochemical treatment tank (4) is provided on the deep treatment tank (3) corresponding to the position of each sedimentation plate (13).

7. The integrated sewage treatment equipment according to claim 6, characterized in that: The sewage pipe (6) is equipped with a kinetic energy recovery box (16). The rotating shaft (17) of the kinetic energy recovery box (16) is connected to the hollow shaft (12) by a transmission belt (20). One end of the transmission belt (20) is sleeved on the first transmission wheel (18) of the rotating shaft (17), and the other end is sleeved on the second transmission wheel (19) of the hollow shaft (12).

8. The integrated sewage treatment equipment according to claim 7, characterized in that: The kinetic energy recovery box (16) is provided with a cavity (1601) that is connected to the sewage pipe (6), and an impeller (1602) is provided in the cavity (1601). The impeller (1602) is connected to the rotating shaft (17), and the impeller (1602) and the rotating shaft (17) are driven to rotate by the water flow.

9. The integrated sewage treatment equipment according to claim 4, characterized in that: The sewage treatment tank (1) is equipped with a motor (25). The output shaft of the motor (25) is connected to the first transmission wheel (18) by an electric buckle. The electric buckle is used to control the connection and disconnection of the output shaft and the first transmission wheel (18).

10. An integrated wastewater treatment process, characterized in that: The process includes the following steps: First, large particulate solids and sediments in the wastewater are removed by a screen in the pretreatment tank. Then, the wastewater is coagulated and settled in the deep treatment tank. Finally, it enters the biological treatment tank and disinfection tank for further treatment. The kinetic energy of the water is recovered by the screen and converted into electrical energy to power the automatic dosing device in the deep treatment tank.

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