A sewage pretreatment rotary drum microfiltration separation device

Abstract

The utility model discloses a kind of sewage pretreatment rotary drum microfiltration separation devices, including box, support, separation rotary drum and drive mechanism, the box and drive mechanism are installed on support, rotatable separation rotary drum is provided in the box, the outer surface of the separation rotary drum is equipped with separation mesh, the inside of separation rotary drum is equipped with helical structure, one end of separation rotary drum is as drive end and extends from the box, the other end is as outlet end and located in the box, the drive end of the separation rotary drum is connected with drive mechanism, and liquid-solid sewage pipe is inserted and installed in this drive end, liquid-solid sewage pipe is rotatably arranged between drive end and is sealed, separation rotary drum is rotated in the box around liquid-solid sewage pipe by drive mechanism, simultaneously, liquid-solid outlet is opened on the box below in the separation rotary drum, sludge outlet is opened on the box below the outlet end of separation rotary drum.The utility model can realize efficient separation sludge, improve sewage separation processing efficiency.

Description

Technical Field

[0001] This utility model relates to a rotary drum microfiltration separation device for wastewater pretreatment, belonging to the field of wastewater pretreatment technology. Background Technology

[0002] In wastewater treatment, the activated sludge process is widely used in industries such as food processing, pharmaceuticals, chemicals, and electronics. It addresses complex water qualities such as high organic matter and toxic substances by optimizing microbial strains and adjusting parameters (such as sludge age and load rate).

[0003] Wastewater typically requires pretreatment before entering the equalization tank or activated sludge tank. Currently used technologies include: 1. The structure and principle of the Changgui bar screen separator is as follows: it is a cleaning type. The operation is driven by a reducer to rotate the chains on both sides up and down. The scraper hook is fixed on the chain. Sewage enters the bar screen separator groove, and floating objects, suspended solids, and fibers are blocked by the scraper hook and rotated into the upper slag hopper. This method has low filtration efficiency and poor filtration accuracy. It can only filter larger floating and suspended solids and is not effective for mud-water mixtures.

[0004] 2. The conventional screw conveyor uses a spiral U-shaped trough or spiral tube. The spiral tube has a spiral shaft, a feed inlet at the front, a discharge outlet at the rear, a wear-resistant plate lining, and a reducer. The sludge is fed from the feed inlet and driven by the reducer to rotate and push out of the discharge outlet. This method requires regular replacement of the wear-resistant plate and has a high mechanical failure rate due to the presence of the spiral shaft.

[0005] 3. The rotating fine bar screen is prone to clogging. The rotating fine bar screen is equipped with a water flushing pipe, and flushing water needs to be run simultaneously when the rotating fine bar screen is working. The flushing water consumption is high, which increases the amount of sewage treated and consumption. Summary of the Invention

[0006] The purpose of this invention is to provide a wastewater pretreatment rotary drum microfiltration separation device to achieve efficient separation of sludge and improve wastewater separation and treatment efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wastewater pretreatment rotary drum microfiltration separation device, comprising a housing, a support, a separation drum, and a drive mechanism. The housing and drive mechanism are mounted on the support. The separation drum is rotatably arranged inside the housing. The separation drum adopts a proprietary perforated separation mesh plate. The interior of the separation drum has a spiral structure. One end of the separation drum extends out of the housing as the drive end, and the other end is located inside the housing as the outlet end. The drive end of the separation drum is connected to the drive mechanism, and a liquid-solid wastewater pipe is inserted and installed at the drive end. The liquid-solid wastewater pipe is sealed and rotatably arranged with the drive end. The drive mechanism drives the separation drum to rotate around the liquid-solid wastewater pipe inside the housing. At the same time, a liquid-solid outlet is opened on the housing below the separation drum, and a sludge outlet is opened on the housing below the outlet end of the separation drum.

[0008] As a further preferred embodiment of this solution, the drive mechanism includes a drive motor and a reducer. The output end of the reducer is provided with a drive gear, and the drive end of the separate drum is provided with a drum gear. The drive gear and the drum gear are connected by a chain.

[0009] As a further preferred embodiment of this solution, the liquid-solid wastewater pipe is located at the front end of the tank body as a liquid-solid inlet, and is connected to the air-lift device or wastewater lift pump via a pipeline.

[0010] As a further preferred embodiment of this solution, the liquid-solid wastewater pipe located inside the tank has multiple outlets on its pipe body.

[0011] As a further preferred embodiment of this solution, the chamber is also equipped with an air stripping pipe, which is positioned close to the surface of the separation drum and is used to strip the sludge from the inner wall of the separation drum.

[0012] As a further preferred embodiment of this scheme, the lower end of the box has a funnel-shaped structure, and the liquid-solid outlet at the bottom is connected to a high sludge carrier biological treatment tank or an equalization tank.

[0013] As a further preferred embodiment of this scheme, the sludge outlet is connected to the sludge tank via a pipeline.

[0014] As a further preferred embodiment of this solution, a wastewater pretreatment rotary drum microfiltration separation device is characterized in that the outlet end of the separation rotary drum has a gradually expanding structure.

[0015] The beneficial effects of this utility model are as follows: (1) The microfiltration separation device of this utility model is equipped with a rotating separation mesh drum inside. A spiral structure is installed inside the mesh drum. The spiral structure is fixed on the inner wall of the separation mesh drum. It can not only support the mesh drum, but also push the separated mud out of the drum.

[0016] (2) The microfiltration separation device of this utility model can separate floating matter, suspended matter, fiber and mud sand, biological bacteria metabolism, sludge expansion, aging bacteria, filamentous bacteria and large particles in sewage or activated sludge. By rotating, the sludge is always thrown into the spiral structure. Since the spiral structure is a spiral pushing angle, the separation drum is rotating, and then the sludge is spiraled out of the sludge outlet.

[0017] (3) The microfiltration separation device of this utility model eliminates the conventional spiral tube, spiral shaft and wear-resistant lining plate, with a more novel structure, no need to replace the wear-resistant plate regularly, and longer service life.

[0018] (4) The microfiltration separation device of this utility model uses a proprietary perforated separation mesh drum, which has a large mesh separation area and higher efficiency in separating sludge.

[0019] (5) The microfiltration separation device of this utility model does not require a spiral shaft, which can reduce mechanical failures.

[0020] (6) The microfiltration separation device of this utility model adopts air stripping, which reduces the amount of water used for flushing and does not increase the amount of sewage treated or the consumption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation drum structure inside the housing of this utility model.

[0022] The markings in the diagram are as follows: 1-box body, 2-separation drum, 3-support, 4-drive mechanism, 5-spiral structure, 6-liquid-solid sewage pipe, 7-liquid-solid inlet, 8-liquid-solid outlet, 9-sludge outlet, 10-stripping pipe, 11-air lifting device, 12-collection tank, 13-intermediate tank / high sludge carrier biological treatment tank, 14-reducer, 15-drum gear, 16-drum roller support, 17-filter residue. Detailed Implementation

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

[0024] like Figure 1 and 2A wastewater pretreatment rotary drum microfiltration separation device includes a housing 1, a support 3, a separation drum 2, and a drive mechanism 4. The housing 1 and the drive mechanism 4 are mounted on the support 3. The separation drum 2 is rotatably arranged inside the housing 1. The outer surface of the separation drum 2 is provided with separation mesh holes, and the interior of the separation drum 2 is provided with a spiral structure. One end of the separation drum 2 extends out of the housing 1 as the drive end, and the other end is located inside the housing 1 as the outlet end. The drive end of the separation drum 2 is connected to the drive mechanism 4, and a liquid-solid wastewater pipe 6 is inserted and installed at the drive end. The liquid-solid wastewater pipe 6 is sealed to the drive end and is rotatably arranged. The drive mechanism 4 drives the separation drum 2 to rotate around the liquid-solid wastewater pipe inside the housing. At the same time, a liquid-solid outlet is opened on the housing 1 below the separation drum 2, and a sludge outlet 9 is opened on the housing 1 below the outlet end of the separation drum 2.

[0025] In this embodiment, the drive mechanism 4 includes a drive motor and a reducer. The output end of the reducer 14 is provided with a drive gear, and the drive end of the separate drum is provided with a drum gear 15. The drive gear and the drum gear 15 are connected by a chain.

[0026] In this embodiment, the liquid-solid wastewater pipe 6 is located at the front end outside the box 1 as a liquid-solid inlet, and is connected to the air-lift device 11 through a pipeline. The liquid-solid wastewater pipe 6 located inside the box 1 has multiple outlets on its pipe body.

[0027] In this embodiment, the housing 1 is also provided with an air stripping pipe 10, which is disposed close to the surface of the separation drum 2 and is used to strip the separation drum 2.

[0028] In this embodiment, the lower end of the box 1 has a funnel-shaped structure, and the liquid-solid outlet at the bottom is connected to the equalization tank or the high sludge carrier biological treatment tank; the sludge outlet is connected to the sludge tank through a pipeline.

[0029] In this embodiment, the outlet end of the separating drum 2 has a gradually expanding structure.

[0030] The working principle of this rotary drum microfiltration separation device is as follows: The microfiltration separation device is equipped with a liquid-solid inlet, a sludge outlet, and a liquid-solid outlet. Wastewater or activated sludge is pumped or lifted by a pulse air lift device to the liquid-solid inlet of the microfiltration separation device, and then enters the front end of the separation drum through the liquid-solid wastewater pipe. The separation drum is driven to rotate by a drive reduction mechanism, which rotates and separates large particles, dead sediment, floating matter, suspended solids, fibers and silt, biological metabolism, aging bacteria, filamentous bacteria, etc. contained in the wastewater or activated sludge. The sludge is pushed out through the sludge outlet by a spiral mechanism. Organic bacteria are screened through the mesh of the separation drum and fall to the liquid-solid outlet at the bottom of the microfiltration separation device and return to the high sludge carrier biological treatment tank, thereby improving the sludge quality.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.

Claims

1. A wastewater pretreatment rotary drum microfiltration separation device, characterized in that, The device includes a housing, a support, a separating drum, and a drive mechanism. The housing and drive mechanism are mounted on the support. The separating drum is rotatably mounted inside the housing. The outer surface of the separating drum has a separating mesh, and the inside of the separating drum has a spiral structure. One end of the separating drum extends out of the housing as the drive end, and the other end is located inside the housing as the outlet end. The drive end of the separating drum is connected to the drive mechanism, and a liquid-solid wastewater pipe is inserted into and installed at the drive end. The liquid-solid wastewater pipe is sealed to the drive end and is rotatably mounted. The drive mechanism drives the separating drum to rotate around the liquid-solid wastewater pipe inside the housing. At the same time, a liquid-solid outlet is opened on the housing below the separating drum, and a sludge outlet is opened on the housing below the outlet end of the separating drum.

2. The wastewater pretreatment rotary drum microfiltration separation device according to claim 1, characterized in that, The liquid-solid wastewater pipe is located at the front end of the tank body as a liquid-solid inlet, and it is connected to the air-lift device via a pipeline.

3. A wastewater pretreatment rotary drum microfiltration separation device according to claim 1 or 2, characterized in that, The liquid-solid wastewater pipe is located inside the tank and has multiple outlets on its pipe body.

4. The wastewater pretreatment rotary drum microfiltration separation device according to claim 1, characterized in that, The chamber is also equipped with an air stripping pipe, which is positioned close to the surface of the separation drum and is used to strip the separation drum.

5. The wastewater pretreatment rotary drum microfiltration separation device according to claim 1, characterized in that, The lower end of the box has a funnel-shaped structure, and its liquid-solid outlet at the bottom is connected to a high sludge carrier biochemical tank.

6. The wastewater pretreatment rotary drum microfiltration separation device according to claim 1, characterized in that, The sludge outlet is connected to the sludge tank via a pipeline.

7. The wastewater pretreatment rotary drum microfiltration separation device according to claim 1, characterized in that, The outlet end of the separating drum has a gradually expanding structure.

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