High efficiency conditioning active sludge agitator

Abstract

The utility model discloses a kind of efficient conditioning activated sludge stirrers, it is related to sewage treatment technical field.A kind of efficient conditioning activated sludge stirrer, comprising: conditioning jar, stirring jar, main stirring paddle, vice stirring paddle, liquid inlet pipe, sludge pipe, stirring shaft and speed reducer motor;Stirring shaft is rotatably connected in conditioning jar;Speed reducer motor is fixed in the top of conditioning jar, and the main shaft of speed reducer motor is fixedly connected with stirring shaft;Stirring jar is coaxially arranged in conditioning jar, and stirring shaft penetrates stirring jar upper and lower sides;Stirring jar and stirring shaft are fixedly connected by connecting rod between them.The utility model, design a kind of efficient conditioning activated sludge stirrer, by main stirring paddle and vice stirring paddle two layers of stirring, under the premise of not increasing the size of conditioning jar, can increase the reaction time of activated sludge and conditioning agent, make activated sludge and conditioning agent be fully mixed in jar body, greatly improve the stirring uniformity, effectively improve the conditioning effect of activated sludge.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a high-efficiency activated sludge conditioning mixer. Background Technology

[0002] In the wastewater treatment process, activated sludge conditioning is a crucial step. Activated sludge is a flocculent granular substance formed by a mixture of microorganisms such as bacteria, fungi, protozoa, and metazoa with suspended and colloidal substances. It has the ability to adsorb and decompose organic matter and is the core component for degrading pollutants in wastewater treatment.

[0003] Sludge conditioning refers to the process of improving the dewatering performance and particle structure of sludge, reducing its viscosity and water content, and facilitating subsequent sludge treatment by adding conditioning agents (such as polymeric flocculants and inorganic coagulants) or using physicochemical methods.

[0004] However, existing activated sludge conditioning mixers have many drawbacks. On the one hand, uneven mixing prevents the conditioner and activated sludge from being fully mixed, affecting the conditioning effect and resulting in a lack of significant improvement in sludge dewatering performance. On the other hand, the mixers operate for long periods, leading to high operating costs.

[0005] Based on this, the inventors believe that how to solve the above-mentioned technical problems and develop an activated sludge conditioning mixer that can achieve uniform mixing and save energy is a technical problem that those skilled in the art urgently need to solve.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model provides a highly efficient activated sludge conditioning mixer to solve the issues raised in the background section.

[0008] This utility model provides the following technical solution: a high-efficiency activated sludge conditioning mixer, comprising: a conditioning tank, a mixing tank, a main mixing blade, a secondary mixing blade, a liquid inlet pipe, a sludge pipe, a mixing shaft, and a geared motor;

[0009] The stirring shaft is rotatably connected to the mixing tank; the geared motor is fixed to the top of the mixing tank, and the main shaft of the geared motor is fixedly connected to the stirring shaft.

[0010] The mixing tank is coaxially mounted inside the preparation tank, and the mixing shaft runs through the upper and lower sides of the mixing tank; the mixing tank and the mixing shaft are fixedly connected by a connecting rod.

[0011] Multiple main stirring blades are fixed at intervals on the stirring shaft, and multiple auxiliary stirring blades are fixed at intervals on the outside of the mixing tank.

[0012] A carrier plate is fixed inside the mixing tank; an overflow port is provided on the tank wall below the carrier plate.

[0013] The inlet of the liquid inlet pipe is outside the conditioning tank, and the outlet of the liquid inlet pipe extends into the mixing tank and is located above the carrier plate;

[0014] Multiple sludge pipes are spaced apart along the inner wall of the mixing tank; the outlet of the sludge pipe is located near the bottom of the mixing tank, and the inlet of the sludge pipe is connected to the carrier plate.

[0015] Preferably, the top of the mixing tank is provided with an annular baffle.

[0016] Preferably, the conditioning tank is equipped with a level gauge.

[0017] Preferably, four sludge pipes are installed at intervals along the inner wall of the mixing tank.

[0018] Preferably, the liquid inlet pipe includes two pipes, which are arranged symmetrically.

[0019] The high-efficiency activated sludge conditioner provided in this embodiment of the invention has the following beneficial effects:

[0020] (1) This utility model, through two layers of stirring by the main stirring paddle and the auxiliary stirring paddle, can increase the reaction time of activated sludge and conditioner without increasing the size of the conditioning tank, so that the activated sludge and conditioner are fully mixed in the tank, greatly improving the uniformity of stirring and effectively improving the conditioning effect of activated sludge.

[0021] (2) The present invention adopts a double-layer stirring structure, which can effectively shorten the residence time and stirring time of activated sludge in the conditioning tank; by enhancing the stirring efficiency, the number of equipment operation batches can be increased, thereby increasing the activated sludge treatment capacity, while reducing energy consumption and achieving the effect of energy saving and consumption reduction. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the mixing tank and its components in this utility model;

[0024] Figure 3 This is a top view of the mixing tank and its components in this utility model. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] See Figures 1-3 To address the problems mentioned in the background section, this utility model provides a high-efficiency activated sludge conditioning mixer to solve the aforementioned technical problems. The technical solution is as follows:

[0027] A high-efficiency activated sludge conditioning mixer includes: conditioning tank 14, mixing tank 2, main mixing blade 3, auxiliary mixing blade 4, liquid inlet pipe 12, sludge pipe 6, mixing shaft 1, and geared motor 11;

[0028] Specifically, the geared motor 11 is a variable frequency motor, which can achieve stepless speed regulation to meet the conditioning requirements of activated sludge of different properties.

[0029] The stirring shaft 1 is rotatably connected to the mixing tank 14; specifically, the lower end of the stirring shaft 1 is connected to the bottom of the mixing tank 14 through a rotating shaft seat, and the upper end of the stirring shaft 1 is connected to the mixing tank 14 through a bearing.

[0030] The geared motor 11 is fixed to the top of the mixing tank 14, and the main shaft of the geared motor 11 is fixedly connected to the stirring shaft 1.

[0031] The mixing tank 2 is coaxially arranged in the preparation tank 14, and the stirring shaft 1 passes through the upper and lower sides of the mixing tank 2; the mixing tank 2 and the stirring shaft 1 are fixedly connected by a connecting rod 5; the connecting rod 5 is made of steel pipe.

[0032] Multiple main stirring blades 3 are fixed at intervals on the stirring shaft 1, and multiple auxiliary stirring blades 4 are fixed at intervals on the outside of the stirring tank 2.

[0033] A carrier plate 7 is fixed in the mixing tank 2; an overflow port 10 is provided on the tank wall of the mixing tank 2 below the carrier plate 7;

[0034] The liquid inlet pipe 12 includes two pipes, which are symmetrically arranged; one liquid inlet pipe 12 is used to transport activated sludge, and the other liquid inlet pipe 12 is used to transport conditioner.

[0035] The inlet of the liquid inlet pipe 12 is outside the conditioning tank 14, and the outlet of the liquid inlet pipe 12 extends into the mixing tank 2 and is located above the carrier plate 7.

[0036] Multiple sludge pipes 6 are arranged at intervals along the inner wall of the mixing tank 2; the outlet of the sludge pipe 6 is located near the bottom of the mixing tank 2, and the inlet of the sludge pipe 6 is connected to the carrier plate 7.

[0037] In this embodiment, an annular baffle 8 is provided on the top of the mixing tank 2; the baffle 8 is added to prevent the activated sludge and conditioner from overflowing during the conditioning process.

[0038] In this embodiment, a level gauge is installed in the conditioning tank 14. By installing the level gauge, the liquid level in the conditioning tank 14 is controlled to not be higher than the overflow port 10 of the mixing tank, thus preventing the sludge after conditioning from flowing back.

[0039] In this embodiment, four sludge pipes 6 are arranged at intervals along the inner wall of the mixing tank 2; preferably, the number of sludge pipes 6 is selected according to the actual situation.

[0040] The following is a method for using a high-efficiency activated sludge conditioning mixer provided in this embodiment of the invention.

[0041] (1) Feeding stage: Activated sludge and conditioning agent (such as polymer flocculant) are respectively transported to the upper space of the mixing tank (the area above the carrier plate) through two liquid inlet pipes; at the same time, the material in the upper space is guided to the bottom of the mixing tank by means of the sludge pipe connected to the carrier plate, so as to provide initial conditions for mixing.

[0042] (2) Initial mixing: The geared motor drives the mixing shaft to rotate, and the main mixing paddles installed at intervals on the mixing shaft will operate accordingly, to initially mix the activated sludge and conditioner in the mixing tank, so that the two are initially mixed in the lower space of the mixing tank.

[0043] (3) Overflow into secondary mixing: When the amount of activated sludge mixed in the lower space of the mixing tank reaches a certain amount, it will flow into the conditioning tank through the overflow port below the tank wall plate 7; the material entering the conditioning tank is driven by the mixing shaft and the auxiliary mixing paddles installed at intervals on the outside of the mixing tank for secondary mixing, so as to ensure that the activated sludge and the conditioning agent are fully mixed and the conditioning effect is improved.

[0044] (4) Liquid level and backflow prevention control: A liquid level gauge is installed in the conditioning tank to monitor the liquid level in real time and control it to not be higher than the overflow port of the mixing tank, so as to avoid sludge backflow after conditioning and maintain process stability.

[0045] (5) Adaptability adjustment: It should be noted that, for different types of activated sludge, conditioners, and actual conditioning volume requirements, the material and size of the agitator (such as the size of the upper / lower space of the mixing tank), the size and angle of the agitator paddle, etc. can be adjusted to ensure that the device is adapted to various conditioning scenarios and plays a stable role.

[0046] The high-efficiency activated sludge conditioner provided in this embodiment of the invention has the following beneficial effects:

[0047] (1) This utility model, through two layers of stirring by the main stirring paddle and the auxiliary stirring paddle, can increase the reaction time of activated sludge and conditioner without increasing the size of the conditioning tank, so that the activated sludge and conditioner are fully mixed in the tank, greatly improving the uniformity of stirring and effectively improving the conditioning effect of activated sludge.

[0048] (2) The present invention adopts a double-layer stirring structure, which can effectively shorten the residence time and stirring time of activated sludge in the conditioning tank; by enhancing the stirring efficiency, the number of equipment operation batches can be increased, thereby increasing the activated sludge treatment capacity, while reducing energy consumption and achieving the effect of energy saving and consumption reduction.

[0049] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and concept of this utility model, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A high efficiency conditioning active sludge agitator characterized by, The utility model relates to a sludge treatment device, including: conditioning tank, stirring tank, main stirring paddle, auxiliary stirring paddle, liquid inlet pipe, sludge pipe, stirring shaft and speed reducer motor; The stirring shaft is rotatably connected in the conditioning tank; the speed reducer motor is fixed on the top of the conditioning tank, and the spindle of the speed reducer motor is fixedly connected with the stirring shaft; The stirring tank is coaxially arranged in the conditioning tank, and the stirring shaft penetrates the stirring tank on both sides; the stirring tank and the stirring shaft are fixedly connected through a connecting rod; Multiple main stirring paddles are fixedly arranged on the stirring shaft at intervals, and multiple auxiliary stirring paddles are fixedly arranged on the outer side of the stirring tank at intervals; The stirring tank is fixedly provided with a carrier plate; an overflow port is arranged on the wall of the tank body of the stirring tank below the carrier plate; The inlet of the liquid inlet pipe is outside the conditioning tank, and the outlet of the liquid inlet pipe extends into the stirring tank and is located above the carrier plate; Multiple sludge pipes are arranged along the inner wall of the tank body in the stirring tank at intervals; the outlet of the sludge pipe is arranged close to the bottom of the stirring tank, and the inlet of the sludge pipe is connected to the carrier plate.

2. The high efficiency conditioning active sludge agitator according to claim 1, wherein An annular baffle is arranged on the top of the stirring tank.

3. The high efficiency conditioning active sludge agitator according to claim 1, wherein A liquid level meter is arranged in the conditioning tank.

4. The high efficiency conditioning active sludge agitator of claim 1 wherein, Four sludge pipes are arranged along the inner wall of the tank body in the stirring tank at intervals.

5. The high efficiency conditioning active sludge agitator of claim 1 wherein, The liquid inlet pipe includes two liquid inlet pipes, and the two liquid inlet pipes are symmetrically arranged.

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