Reclaimed water treatment system

Abstract

The utility model relates to the technical field of sewage treatment, and particularly discloses a reclaimed water treatment system which comprises sewage treatment equipment and waste gas treatment equipment, the sewage treatment equipment comprises a grating tank, a water collecting tank, a regulating tank, a sedimentation tank, an intermediate tank, a hydrolysis acidification tank, an MBR membrane tank and a clean water tank which are sequentially connected through pipelines; the sewage treatment equipment further comprises automatic safety valves, and the automatic safety valves are arranged at exhaust ports of the grating tank, the water collecting tank, the regulating tank, the sedimentation tank, the middle tank and the sludge collecting tank; a gas inlet of the waste gas treatment equipment is connected to the grating tank, the water collecting tank, the regulating tank, the sedimentation tank, the middle tank and the sludge collecting tank through pipelines. According to the sewage treatment device, the automatic safety valve is used for ensuring that waste gas generated in each working procedure during sewage treatment cannot overflow, favorable conditions are provided for waste gas collection, and meanwhile, the waste gas is treated through the waste gas treatment equipment, so that the treated waste gas meets the emission standard, and the pollution to the environment and the influence on the normal life of surrounding personnel are avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a greywater treatment system. Background Technology

[0002] A greywater treatment plant is a water treatment facility used to collect and treat greywater, which refers to non-potable water that has been treated to meet specified water quality standards and can be reused within a certain range. Greywater treatment plants primarily treat wastewater generated during production processes and by employing a hydrolysis wastewater treatment technology.

[0003] Currently, wastewater treatment plants employ hydrolysis technology to remove suspended solids and sludge from wastewater to a certain extent. Then, through hydrolysis and acidification, insoluble organic matter in the wastewater is converted into soluble organic matter, transforming large, difficult-to-biodegrade molecules into smaller, easily biodegradable molecules, thus improving the biodegradability of the wastewater. Subsequently, the wastewater undergoes further treatment using the MBR process to ensure that the effluent meets standards. However, in existing wastewater treatment plants, the exhaust gas generated after wastewater treatment can overflow, leading to environmental pollution and affecting the normal lives of nearby residents. Utility Model Content

[0004] The purpose of this invention is to provide a greywater treatment system to solve the problem that waste gas generated after sewage treatment in existing greywater treatment plants will overflow, thereby polluting the environment and affecting the normal lives of people in the surrounding area.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a greywater treatment system, comprising:

[0007] The wastewater treatment equipment includes a screen tank, a collection tank, a regulating tank, a sedimentation tank, an intermediate tank, a hydrolysis acidification tank, an MBR membrane tank, and a clear water tank connected in sequence by pipelines, wherein the sedimentation tank is connected to a sludge collection tank by a pipeline; the wastewater treatment equipment also includes an automatic safety valve, and the vents of the screen tank, the collection tank, the regulating tank, the sedimentation tank, the intermediate tank, and the sludge collection tank are all equipped with the automatic safety valve, which is used to maintain negative pressure in the screen tank, the collection tank, the regulating tank, the sedimentation tank, the intermediate tank, and the sludge collection tank;

[0008] The exhaust gas treatment equipment has its air inlet connected to the bar screen, the water collection tank, the equalization tank, the sedimentation tank, the intermediate tank, and the sludge collection tank via a pipeline.

[0009] As an optional solution to the above-mentioned greywater treatment system, the waste gas treatment equipment includes a static pressure box, a cyclone scrubbing tower, a low-temperature plasma purifier, a centrifugal fan, and an exhaust pipeline. Adjacent components of the static pressure box, the cyclone scrubbing tower, the low-temperature plasma purifier, the centrifugal fan, and the exhaust pipeline are connected by pipes. The static pressure box has the air inlet.

[0010] As an alternative to the above-mentioned greywater treatment system, the greywater treatment system further includes a reverse-hanging membrane, which is used to seal the hydrolysis acidification tank, and the hydrolysis acidification tank is connected to the air inlet of the waste gas treatment equipment through a pipeline.

[0011] As an alternative to the aforementioned greywater treatment system, a water collection ditch is provided at the end of the inverted membrane.

[0012] As an alternative to the aforementioned greywater treatment system, the equalization tank is connected to a first blower, which is used to aerate and stir the sewage in the equalization tank.

[0013] As an optional solution to the above-mentioned greywater treatment system, the sedimentation tank is connected to a PAC dosing device and a PAM dosing device.

[0014] As an alternative to the above-mentioned greywater treatment system, the sedimentation tank is connected to a second blower, which is used to blow sludge from the sedimentation tank into the sludge collection tank.

[0015] As an optional solution for the above-mentioned greywater treatment system, the sedimentation tank is a vertical flow sedimentation tank.

[0016] As an optional solution for the above-mentioned greywater treatment system, the greywater treatment system further includes a chamber, in which the hydrolysis acidification tank and the MBR membrane tank are both located, and the bar screen tank, the water collection tank, the equalization tank, the sedimentation tank, the intermediate tank and the sludge collection tank are all located outside the chamber.

[0017] As an optional solution to the above-mentioned greywater treatment system, the greywater treatment system further includes water pumps, and the water pumps are installed between adjacent units of the collection tank, the equalization tank, the sedimentation tank, the intermediate tank, the hydrolysis acidification tank, the MBR membrane tank and the clear water tank.

[0018] The beneficial effects of this utility model are as follows:

[0019] This greywater treatment system includes wastewater treatment equipment and waste gas treatment equipment. The wastewater treatment equipment includes a screen tank, a collection tank, a regulating tank, a sedimentation tank, an intermediate tank, a hydrolysis acidification tank, an MBR membrane tank, and a clear water tank, all connected sequentially by pipelines. The sedimentation tank is connected to a sludge collection tank via pipelines. Through multiple processes, the wastewater is purified into greywater and collected in the clear water tank for subsequent distribution to various water usage points via a variable frequency water supply system. The sludge in the wastewater is separated into the sludge collection tank for further treatment. The wastewater treatment equipment also includes automatic safety valves. Automatic safety valves are installed at the exhaust ports of the bar screen, collection tank, equalization tank, sedimentation tank, intermediate tank, and sludge collection tank. The automatic safety valves are used to maintain negative pressure in the bar screen, collection tank, equalization tank, sedimentation tank, intermediate tank, and sludge collection tank, thereby ensuring that the waste gas generated in each process of wastewater treatment does not overflow and providing favorable conditions for collecting waste gas. At the same time, the air inlet of the waste gas treatment equipment is connected to the bar screen, collection tank, equalization tank, sedimentation tank, intermediate tank, and sludge collection tank through pipelines to treat the waste gas so that the treated waste gas meets the emission standards, avoids environmental pollution, and avoids affecting the normal life of surrounding people. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the greywater treatment system provided in an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Wastewater treatment equipment; 11. Bar screen; 12. Collection tank; 13. Equalization tank; 131. First blower; 14. Sedimentation tank; 141. PAC dosing device; 142. PAM dosing device; 143. Second blower; 15. Intermediate tank; 16. Hydrolysis acidification tank; 17. MBR membrane tank; 18. Clear water tank; 19. Sludge collection tank; 2. Automatic safety valve; 3. Waste gas treatment equipment; 31. Static pressure box; 32. Cyclone scrubber; 33. Low temperature plasma purifier; 34. Centrifugal blower; 35. Discharge pipeline; 4. Inverted membrane; 41. Collection ditch; 5. Chamber. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] like Figure 1 As shown in the figure, this embodiment provides a greywater treatment system for treating wastewater.

[0028] The greywater treatment system includes wastewater treatment equipment 1 and waste gas treatment equipment 3. Wastewater treatment equipment 1 includes a screen tank 11, a collection tank 12, an equalization tank 13, a sedimentation tank 14, an intermediate tank 15, a hydrolysis acidification tank 16, an MBR membrane tank 17, and a clear water tank 18, which are connected in sequence by pipelines. The sedimentation tank 14 is connected to a sludge collection tank 19 by pipelines. Through multiple processes, the wastewater is purified into greywater and collected in the clear water tank 18, which is convenient for subsequent delivery to various water use points through a variable frequency water supply system. The sludge in the wastewater is separated into the sludge collection tank 19 for further treatment.

[0029] The wastewater treatment equipment 1 also includes an automatic safety valve 2. The exhaust ports of the bar screen 11, water collection tank 12, equalization tank 13, sedimentation tank 14, intermediate tank 15, and sludge collection tank 19 are all equipped with automatic safety valves 2. The automatic safety valves 2 are used to maintain negative pressure in the bar screen 11, water collection tank 12, equalization tank 13, sedimentation tank 14, intermediate tank 15, and sludge collection tank 19, thereby ensuring that the waste gas generated in each process of wastewater treatment will not overflow, providing favorable conditions for collecting waste gas. At the same time, the air inlet of the waste gas treatment equipment 3 is connected to the bar screen 11, water collection tank 12, equalization tank 13, sedimentation tank 14, intermediate tank 15, and sludge collection tank 19 through pipelines to treat the waste gas, so that the treated waste gas meets the emission standards, avoids environmental pollution, and avoids affecting the normal life of surrounding people.

[0030] Specifically, the waste gas treatment equipment 3 includes a static pressure box 31, a cyclone scrubbing tower 32, a low-temperature plasma purifier 33, a centrifugal fan 34, and an exhaust pipe 35. Adjacent components of the static pressure box 31, cyclone scrubbing tower 32, low-temperature plasma purifier 33, centrifugal fan 34, and exhaust pipe 35 are connected by pipes. The static pressure box 31 has an air inlet. The waste gas extracted by the centrifugal fan 34 first passes through the static pressure box 31 to stabilize the pressure and ensure stable airflow. The waste gas then enters the cyclone scrubbing tower 32 from bottom to top for purification. When the waste gas passes through the rotating scrubbing tank inside, the airflow speeds up, causing the packing balls to rotate rapidly, allowing the waste gas to be fully mixed and washed with the water flowing from top to bottom, adsorbing dust and dissolving hydrogen sulfide in the waste gas. After treatment, the waste gas is discharged into the low-temperature plasma purifier 33 for further purification. The low-temperature plasma purifier 33 is divided into three chambers. The first chamber uses a high-frequency motor head to break down odor molecules in the exhaust gas. The second and third chambers use ultraviolet light to sterilize and disinfect the exhaust gas. Finally, the exhaust gas passing through the low-temperature plasma purifier 33 meets the emission standards and is discharged through a 15m high exhaust pipe 35. Optionally, the cyclone scrubbing tower 32 is a square cyclone scrubbing tower.

[0031] Furthermore, the greywater treatment system also includes an inverted membrane 4, which is used to seal the hydrolysis acidification tank 16. The hydrolysis acidification tank 16 is connected to the air inlet of the waste gas treatment equipment 3 via a pipe. The inverted membrane 4 can completely seal the hydrolysis acidification tank 16, preventing the waste gas generated in the hydrolysis acidification tank 16 from overflowing and polluting the external environment. Since the membrane is suspended outside the steel structure, direct contact between the steel structure and the waste gas inside the tank is avoided, effectively preventing corrosion of the steel structure and extending its service life. The waste gas can then enter the waste gas treatment equipment 3 for purification. Optionally, a water collection ditch 41 is provided at the end of the inverted membrane 4. The water collection ditch 41 can guide the water accumulated on the surface of the membrane to a designated location for discharge, reducing deformation and damage to the membrane due to water accumulation, thereby extending the service life of the inverted membrane 4.

[0032] Furthermore, the equalization tank 13 is connected to a first blower 131, which is used to aerate and stir the sewage in the equalization tank 13 to equalize the water quality and prevent sludge from settling at the bottom.

[0033] Furthermore, the sedimentation tank 14 is connected to a PAC dosing device 141 and a PAM dosing device 142. These devices allow for the addition of flocculants within the sedimentation tank 14, enabling effective sludge settling and thus purifying the wastewater. Simultaneously, the sedimentation tank 14 is connected to a second blower 143, which aspirates the sludge from the sedimentation tank 14 into the sludge collection tank 19 for sludge discharge. This aspirating process improves treatment efficiency, simplifies subsequent treatment procedures, and enhances the effectiveness of the flocculant. Optionally, the sedimentation tank 14 is a vertical flow sedimentation tank. Vertical flow sedimentation tanks have a smaller footprint, facilitate sludge discharge, and provide efficient sludge treatment.

[0034] Furthermore, the greywater treatment system also includes a chamber 5, in which the hydrolysis acidification tank 16 and the MBR membrane tank 17 are both located. The bar screen tank 11, the water collection tank 12, the equalization tank 13, the sedimentation tank 14, the intermediate tank 15, and the sludge collection tank 19 are all located outside the chamber 5. By setting up the chamber 5, the hydrolysis acidification tank 16 and the MBR membrane tank 17 can be isolated from the external environment, which facilitates temperature control, reduces the risk of waste gas diffusion, and also avoids interference from rain and snow, thus extending the service life of the relevant equipment.

[0035] Furthermore, the greywater treatment system also includes water pumps. Water pumps are installed between adjacent units in the collection tank 12, equalization tank 13, sedimentation tank 14, intermediate tank 15, hydrolysis acidification tank 16, MBR membrane tank 17, and clear water tank 18. The water pumps enable the flow of sewage and meet the water circulation requirements of the greywater treatment system.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A greywater treatment system, characterized in that, include: Wastewater treatment equipment (1) includes a screen tank (11), a collection tank (12), an equalization tank (13), a sedimentation tank (14), an intermediate tank (15), a hydrolysis acidification tank (16), an MBR membrane tank (17), and a clear water tank (18) connected in sequence by pipes, wherein the sedimentation tank (14) is connected to a sludge collection tank (19) by pipes; the wastewater treatment equipment (1) also includes an automatic safety valve (2), and the exhaust ports of the screen tank (11), the collection tank (12), the equalization tank (13), the sedimentation tank (14), the intermediate tank (15), and the sludge collection tank (19) are all equipped with the automatic safety valve (2), and the automatic safety valve (2) is used to maintain the screen tank (11), the collection tank (12), the equalization tank (13), the sedimentation tank (14), the intermediate tank (15), and the sludge collection tank (19) under negative pressure; The exhaust gas treatment equipment (3) has its air inlet connected to the grit chamber (11), the water collection tank (12), the regulating tank (13), the sedimentation tank (14), the intermediate tank (15), and the sludge collection tank (19) via a pipe.

2. The greywater treatment system according to claim 1, characterized in that, The waste gas treatment equipment (3) includes a static pressure box (31), a cyclone scrubbing tower (32), a low-temperature plasma purifier (33), a centrifugal fan (34), and an exhaust pipe (35). Adjacent units of the static pressure box (31), the cyclone scrubbing tower (32), the low-temperature plasma purifier (33), the centrifugal fan (34), and the exhaust pipe (35) are connected by pipes. The static pressure box (31) has the air inlet.

3. The greywater treatment system according to claim 1, characterized in that, The greywater treatment system also includes an inverted membrane (4), which is used to seal the hydrolysis acidification tank (16), which is connected to the air inlet of the waste gas treatment equipment (3) through a pipeline.

4. The greywater treatment system according to claim 3, characterized in that, The end of the inverted membrane (4) is provided with a water collection ditch (41).

5. The greywater treatment system according to claim 1, characterized in that, The regulating tank (13) is connected to a first blower (131), which is used to aerate and stir the sewage in the regulating tank (13).

6. The greywater treatment system according to claim 1, characterized in that, The sedimentation tank (14) is connected to a PAC dosing device (141) and a PAM dosing device (142).

7. The greywater treatment system according to claim 1, characterized in that, The sedimentation tank (14) is connected to a second blower (143), which is used to blow sludge from the sedimentation tank (14) into the sludge collection tank (19).

8. The greywater treatment system according to claim 1, characterized in that, The sedimentation tank (14) is a vertical flow sedimentation tank.

9. The greywater treatment system according to claim 1, characterized in that, The greywater treatment system also includes a chamber (5), in which the hydrolysis acidification tank (16) and the MBR membrane tank (17) are located, while the bar screen tank (11), the water collection tank (12), the regulating tank (13), the sedimentation tank (14), the intermediate tank (15), and the sludge collection tank (19) are located outside the chamber (5).

10. The greywater treatment system according to any one of claims 1 to 9, characterized in that, The greywater treatment system also includes water pumps, and the water pumps are installed between adjacent units of the collection tank (12), the regulating tank (13), the sedimentation tank (14), the intermediate tank (15), the hydrolysis acidification tank (16), the MBR membrane tank (17), and the clear water tank (18).

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