A filter-sedimentation integrated device for a biological rotating disc

Abstract

The utility model discloses a kind of filtering precipitation integrated equipment for biological rotary disc, it is related to sewage treatment technical field.The equipment mainly includes sedimentation filter device, clean water tank, sludge collecting hopper, control system and delivery pipeline.The sedimentation filter device is vertical tank body, high fill rate filler layer is equipped in its inside center, is equipped with backwashing device around, lower portion is equipped with water inlet, side wall is equipped with water weir and water outlet, bottom is equipped with sludge discharge pipe.Clean water tank is used to store clean water and provide backwashing water source.Delivery pipeline connects each component and is equipped with water pump and valve.Control system uses PLC or single-chip microcontroller, backwashing and sludge discharge process are automatically controlled.The utility model is integrated by design, realizes the efficient link with biological rotary disc, automatically completes filtration, sedimentation, backwashing and sludge discharge operation, with Compact structure, stable operation, high processing efficiency, the advantage that it is easy to maintain, effectively improves the overall processing efficiency and automation level of biological rotary disc system.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology. Specifically, it is an integrated filtration and sedimentation device for biological rotating disc process, which is suitable for the treatment of urban domestic sewage, industrial organic wastewater and other scenarios, and is especially suitable for the solid-liquid separation and sludge treatment process after biological rotating disc. Background Technology

[0002] Biological rotating discs (BCDs) are a common biofilm wastewater treatment process. They utilize microorganisms attached to the discs to degrade organic pollutants in the water, offering advantages such as high treatment efficiency and stable operation. However, even in BCD processes, the treated water still contains a certain amount of suspended solids and sludge from the biological membrane. If this sludge-water separation is not performed promptly and effectively, it will affect the effluent quality and may even lead to system blockage and reduced efficiency. Currently, most common sedimentation or filtration equipment is a separate design, which occupies a large area, has complex connections, and is inconvenient to operate and control. Furthermore, backwashing and sludge removal operations largely rely on manual labor, resulting in low automation and difficulty in efficiently coordinating with BCD systems. Therefore, there is an urgent need for an integrated filtration and sedimentation device that is compact, easy to operate, and capable of automatic backwashing and sludge removal to improve the overall treatment efficiency and operational stability of BCD systems. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated filtration and sedimentation device for biological rotating discs, enabling it to be efficiently connected with the biological rotating disc system to achieve automatic filtration, sedimentation, backwashing and sludge discharge of sewage and sludge, thereby improving the equipment integration and treatment efficiency of the entire process.

[0004] An integrated filtration and sedimentation device for biological rotating discs mainly includes a sedimentation and filtration unit, a clear water tank, a sludge collection hopper, a control system, and a conveying pipeline.

[0005] The sedimentation and filtration device is used to receive and further treat the effluent from the biological rotating disc. The equipment is preferably made of stainless steel or fiberglass and has a vertical tank structure. A packing layer is located at the center of the tank. The packing material can be environmentally friendly materials such as polypropylene or polyethylene, with a preferred filling rate of 60%-80%. This provides a large surface area for microorganisms to attach, forming a highly active biofilm and enhancing the treatment effect. A backwashing device is installed around the packing layer to periodically clean blockages, renew the biofilm, and maintain stable system operation. An inlet is located at the bottom of the packing layer, and an outlet is located on the upper side wall for connection to an external water distribution system. A weir is located inside the side wall for uniform water collection and water level control. A sludge discharge pipe is located at the bottom, and a sludge discharge pump discharges the settled sludge to a sludge collection hopper.

[0006] The clean water tank is used to collect treated clean water and serve as a backwash water source. It has a clean water inlet and outlet on the upper part of its side wall, and a backwash inlet on the lower part.

[0007] The conveying pipeline is used to connect the inlet and outlet of the sedimentation and filtration device and the inlet of the backwashing device. The pipeline is equipped with an inlet water pump, an outlet water pump, a conveying water pump, a sludge discharge pump, a shut-off valve, and a check valve, which can realize timed and periodic backwashing and sludge discharge operations under the command of the control system.

[0008] The control system uses a PLC or microcontroller system, which is electrically connected to each water pump and valve. Users can set the backwashing cycle, intensity and sludge discharge cycle through the human-machine interface to achieve fully automatic operation.

[0009] The beneficial effects of this utility model are as follows: 1. It integrates filtration, sedimentation, backwashing, and sludge discharge into a compact design with a small footprint, making it easy to integrate with biological rotating disc systems; 2. An automated control system is adopted to achieve timed automatic operation of backwashing and sludge discharge, reducing manual intervention and ensuring stable and reliable operation; 3. The packing layer, combined with the backwashing device, effectively prevents clogging, extends the service life of the equipment, and maintains the activity of the biofilm; 4. The outlet weir design ensures uniform water output, controllable water level, and improved water quality. 5. The overall equipment is made of corrosion-resistant and high-strength materials, making it suitable for various wastewater treatment scenarios and possessing good value for promotion and application. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Explanation of reference numerals in the attached figures: 1: Sedimentation and filtration device 101: Inlet 102: Backwashing device 103: Packing layer 104: Outflow weir 105: Outlet 2: Mud collection bucket 3: Control System 4: Delivery pipeline 401: Water pump 402: Check valve 403: Shut-off valve 404: Inlet water pump 405: Water pump 406: Sludge Pump 5: Clean water tank 501: Clear water inlet 502: Clear water outlet 503: Backwash Inlet Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0013] like Figure 1 As shown, the main body of this utility model device is a sedimentation and filtration device (1), which is connected in the middle by a conveying pipeline (4) and is uniformly controlled by a control system (3).

[0014] After preliminary treatment by the biological rotating disc, the wastewater is sent to the center of the packing layer (103) of the sedimentation and filtration device (1) by the inlet water pump (404). After further degradation and filtration by the biofilm, the supernatant is collected at the outlet (105) through the outlet weir (104) and then transported to the clear water tank (5) by the outlet water pump (405). When the preset backwash cycle is reached, the control system (3) starts the delivery water pump (401) and opens the shut-off valve (403) to transport the water in the clear water tank (5) to the backwash device (102) through the backwash inlet (503) to clean the packing layer. When the sludge discharge cycle is reached, the control system starts the sludge discharge pump (406) to discharge the bottom sedimented sludge into the sludge collection hopper (2).

[0015] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated filtration and sedimentation device for a biological rotating disc, characterized in that, include: The sedimentation and filtration device (1) is a vertical tank used to receive and treat the effluent from the biological rotating disc; the clear water tank (5) is used to collect the treated clear water and serve as a backwash water source; the sludge collection hopper (2) is used to collect the settled sludge. The conveying pipeline (4) is used to connect the inlet and outlet of each device; and the control system (3) is used to automatically control the operation of the equipment; The sedimentation and filtration device (1) has a packing layer (103) in the center, and a backwashing device (102) is provided around the packing layer (103). The lower part of the packing layer (103) has an inlet (101), the upper part of the side wall has an outlet (105), and the inside of the side wall has a weir (104) for uniform water collection and water level control. The bottom has a sludge discharge pipe.

2. The integrated filtration and sedimentation device for a biological rotating disc according to claim 1, characterized in that, The conveying pipeline (4) is equipped with an inlet water pump (404), an outlet water pump (405), a conveying water pump (401), a sludge pump (406), a shut-off valve (403), and a check valve (402).

3. The integrated filtration and sedimentation device for a biological rotating disc according to claim 1, characterized in that, The upper part of the side wall of the clean water tank (5) is provided with a clean water inlet (501) and a clean water outlet (502), and the lower part is provided with a backwash inlet (503).

4. The integrated filtration and sedimentation device for a biological rotating disc according to claim 1, characterized in that, The filling rate of the filler layer (103) is 60%-80%.

5. The integrated filtration and sedimentation device for a biological rotating disc according to claim 1, characterized in that, The filler layer (103) is made of polypropylene or polyethylene.

6. The integrated filtration and sedimentation device for a biological rotating disc according to claim 1, characterized in that, The material of the sedimentation filtration device (1) is stainless steel or fiberglass.

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