Sludge supply device for industrial wastewater anaerobic toxicity evaluation experiment

Abstract

The utility model discloses a sludge supply device for an industrial wastewater anaerobic toxicity evaluation experiment, which mainly comprises a tank body and a discharging mechanism, the tank body is communicated with the discharging mechanism through a pipeline, and two groups of adjustable one-way valves which are respectively controlled are arranged on the pipeline; the discharging mechanism comprises a spiral pull rod and a rotating rod, and a driving hole is formed in the upper end of the rotating rod; when the discharging mechanism is pulled upwards, materials in the tank body are extracted through air pressure, when the pull rod moves upwards, the rotating rod is driven to rotate through the driving hole, and the rotating rod rotates to stir the materials in the discharging mechanism; according to the utility model, the problems of complicated sludge supply mode and non-uniform mixing of sludge and nutrient solution in the anaerobic toxicity evaluation experiment are effectively solved. By simplifying the operation process, the sludge taking convenience is improved, and the automation level of the experimental apparatus is further enhanced.

Description

Technical Field

[0001] This application relates to the field of anaerobic toxicity testing, specifically to a sludge supply device for evaluating the anaerobic toxicity of industrial wastewater. Background Technology

[0002] In anaerobic treatment systems primarily treating industrial wastewater and municipal sewage, the stability and efficiency of the process operation are highly dependent on the activity of the anaerobic microbial community within the system. However, industrial wastewater often contains complex organic pollutants and potentially toxic substances, such as heavy metals and halogenated organic compounds, which can easily inhibit microbial metabolic processes, thereby affecting methanogenesis efficiency and the effluent compliance rate. Therefore, during the design, commissioning, and operation management of anaerobic treatment systems, it is necessary to quantitatively assess the toxicity characteristics of the influent to ensure that microbial function is not impaired and to maintain long-term stable operation of the process. For this reason, anaerobic toxicity evaluation testing has become a crucial step in industrial wastewater treatment and wastewater treatment plant process optimization.

[0003] Currently, such evaluation experiments typically involve co-culturing anaerobic granular sludge and nutrient solution in a closed reactor, and analyzing the toxicity impact by monitoring changes in the methanogenesis rate. However, the sludge supply method in existing experimental devices is still mostly manual, often requiring modified syringes to draw sludge and inject it separately into the reaction bottle, adding it separately from the nutrient solution. This leads to cumbersome operating procedures, discontinuous sludge supply, and uneven mixing of the reaction system, which not only affects experimental efficiency but also reduces the stability and repeatability of experimental data.

[0004] To address the aforementioned issues, there is an urgent need to develop a compact, efficient experimental supply device with simultaneous sludge and nutrient solution delivery and automatic premixing capabilities. This device would meet the current standardized requirements for anaerobic toxicity assessment and enhance the automation and scientific rigor of related experiments in the field of industrial wastewater and sewage treatment.

[0005] Based on the above background, this study developed a sludge supply device for industrial wastewater anaerobic toxicity evaluation experiments, which facilitates the driving of sludge and nutrient solution in anaerobic toxicity evaluation experiments and realizes automatic premixing of sludge and nutrient solution. Utility Model Content

[0006] The purpose of this invention is to provide a sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater, aiming to solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater, including a tank and a discharge mechanism for premixing materials. The outer periphery of the tank is fixedly connected to the discharge mechanism, and the tank and the discharge mechanism are connected by a pipeline. Two sets of adjustable one-way valves are installed on the pipeline, and a partition for separating materials is installed in the middle of the tank.

[0008] The discharge mechanism includes a pull rod and a rotating rod. The pull rod has a spiral structure, and the rotating rod has a hollow structure. A drive hole is opened at the upper end of the rotating rod. The drive hole has the same cross-sectional shape as the pull rod, and the pull rod and the drive hole are slidably connected.

[0009] When the discharge mechanism is pulled up, it uses air pressure to extract the material from the tank. As the pull rod moves up, it drives the rotating rod to rotate through the drive hole. The rotating rod stirs the material in the discharge mechanism.

[0010] The sludge and nutrient solution are stored simultaneously in separate tanks, and the sludge and nutrient solution are extracted synchronously through a discharge mechanism. The ratio of sludge to nutrient solution is pre-controlled using an adjustable one-way valve. During extraction, the displacement of the pull rod drives the rotation of the rotating rod to stir and mix the material collected into the discharge mechanism, achieving an automatic pre-mixing effect. This effectively simplifies the operation process, improves the convenience of sludge handling, and further enhances the automation level of the experimental equipment.

[0011] Furthermore, the upper end of the tank is provided with two sets of closable feed inlets, which are respectively located on both sides of the partition. An aeration stone is provided on the bottom wall of the tank on one side of the partition, and an air pump is provided on the side of the tank. The air pump pipeline passes through the bottom wall of the tank and connects to the lower end of the aeration stone. The air pump is characterized by having a connection port at its upper part for connecting to the air tank, and a seal is provided at the connection between the air pump pipeline and the bottom wall of the tank.

[0012] Furthermore, the discharge mechanism also includes a storage pipe, a piston head, a piston rod, and a discharge valve. The storage pipe is fixedly connected to the tank body on its periphery, and its lower ends are connected to pipelines on both sides. The piston head is slidably connected to the inside of the storage pipe, with its upper end fixedly connected to the piston rod and its lower end fixedly connected to the upper end of a pull rod. The end of the piston rod away from the piston head extends upwards to the outside of the storage pipe. The discharge valve is located at the lower end of the storage pipe, and the lower end of the rotating rod is rotatably connected to the center of the bottom wall of the storage pipe. A drive handle is fixedly connected to the end of the piston rod away from the piston head.

[0013] Furthermore, the upper end of the storage tube is sealed, and the piston rod passes through the seal and is slidably connected to the storage tube. The discharge valve is a one-way valve. An array of stirring paddles is evenly arranged around the rotating rod from top to bottom.

[0014] Compared with existing technologies, it has the following beneficial effects:

[0015] This invention provides a sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater. The device simultaneously stores sludge and nutrient solution in separate tanks, and synchronously extracts the sludge and nutrient solution through a discharge mechanism. An adjustable one-way valve pre-controls the ratio of sludge to nutrient solution. Simultaneously, the displacement of a pull rod drives a rotating rod to stir and mix the material collected in the discharge mechanism, achieving automatic pre-mixing. This effectively simplifies the operation process, improves the convenience of sludge handling, and further enhances the automation level of the experimental equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to this utility model.

[0017] Figure 2 This is a schematic diagram of the pipeline connection of a sludge supply device for an anaerobic toxicity evaluation experiment of industrial wastewater according to the present invention.

[0018] Figure 3 This is a cross-sectional view of the internal structure of a sludge supply device for an anaerobic toxicity evaluation experiment of industrial wastewater according to the present invention.

[0019] Figure 4 This is a cross-sectional view of the discharge mechanism of a sludge supply device for anaerobic toxicity evaluation of industrial wastewater according to the present invention.

[0020] Figure 5 This is an exploded schematic diagram of the pull rod and rotating rod of a sludge supply device for an anaerobic toxicity evaluation experiment of industrial wastewater according to this utility model.

[0021] In the diagram: 1-Tank body; 11-Baffle plate; 12-Inlet; 13-Aeration stone; 14-Air pump; 2-Discharge mechanism; 21-Storage pipe; 22-Piston head; 23-Piston rod; 24-Discharge valve; 25-Drive handle; 3-Pipeline; 4-Adjustable check valve; 5-Pull rod; 6-Rotating rod; 61-Agitator; 7-Drive hole. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 5As shown, this utility model provides the following technical solution: a sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater; including a tank 1 and a discharge mechanism 2 for premixing materials, the outer periphery of the tank 1 is fixedly connected to the discharge mechanism 2, the tank 1 and the discharge mechanism 2 are connected through a pipe 3, the pipe 3 is equipped with two sets of adjustable one-way valves 4 that are controlled separately, and a partition 11 for separating materials is provided in the middle of the tank 1;

[0024] The discharge mechanism 2 includes a pull rod 5 and a rotating rod 6. The pull rod 5 has a spiral structure, and the rotating rod 6 has a hollow structure. A drive hole 7 is provided at the upper end of the rotating rod 6. The drive hole 7 has the same cross-sectional shape as the pull rod 5, and the pull rod 5 and the drive hole 7 are slidably connected.

[0025] When the discharge mechanism 2 is pulled up, it uses air pressure to extract the material in the tank 1. When the pull rod 5 moves up, it drives the rotating rod 6 to rotate through the drive hole 7. The rotating rod 6 stirs the material in the discharge mechanism 2.

[0026] The adjustable one-way valve 4 has a scale on its side. By rotating the valve, the flow rate of the material under air pressure can be controlled, thereby controlling the material ratio.

[0027] See Figure 1 The upper end of the tank body 1 is provided with two sets of closable feed inlets 12. The feed inlets 12 are respectively located on both sides of the partition 11. The materials on both sides of the partition 11 inside the tank body 1 can be added and replenished through the feed inlets 12. One side of the partition 11 is used to store anaerobic sludge, and the other side is used to store the nutrient solution required for the reaction.

[0028] See Figure 3 An aeration stone 13 is installed on the bottom wall of the tank 1 on one side of the partition 11. An air pump 14 is installed on the side of the tank 1, and the air pump 14 is connected to the lower end of the aeration stone 13 through the bottom wall of the tank 1. The side where the aeration stone 13 is located is used to store anaerobic sludge. The top cover of the tank on this side is equipped with a one-way valve to discharge gas and maintain internal air pressure balance. The air pump 14 can deliver nitrogen gas to the aeration stone 13 through the pipeline to achieve continuous anaerobic aeration and ensure that the sludge is always in an anaerobic environment.

[0029] See Figure 3 The air pump 14 is provided with a connection port for connecting to the gas tank. The connection between the air pump 14 pipeline and the bottom wall of the tank 1 is sealed. The connection port provided on the upper part of the air pump 14 can be directly connected to the nitrogen tank. The gas in the nitrogen tank is pumped to the aeration stone 13 through the air pump 14.

[0030] As another embodiment, such as Figures 2 to 5As shown, the discharge mechanism 2 further includes a storage pipe 21, a piston head 22, a piston rod 23, and a discharge valve 24. The storage pipe 21 is fixedly connected to the tank body 1 on its periphery, and the lower ends of the storage pipe 21 are connected to the pipe 3 on both sides. The piston head 22 is slidably connected to the inside of the storage pipe 21. The upper end of the piston head 22 is fixedly connected to the piston rod 23, and the lower end of the piston head 22 is fixedly connected to the upper end of the pull rod 5. The end of the piston rod 23 away from the piston head 22 extends upward to the outside of the storage pipe 21. The discharge valve 24 is located at the lower end of the storage pipe 21, and the lower end of the rotating rod 6 is rotatably connected to the center position of the bottom wall of the storage pipe 21.

[0031] The lower part of the piston head 22 is filled with nitrogen gas to balance the internal and external gas pressure. When discharge is required, the adjustable one-way valve 4 is adjusted to the required scale, causing the piston rod 23 to rise, which in turn drives the piston head 22 to rise. When the piston head 22 rises, it drives the pull rod 5 to rise synchronously. The sliding of the spiral pull rod 5 in the drive hole 7 causes the drive hole 7 to drive the rotating rod 6 to rotate. The rise of the piston head 22 uses air pressure to draw the material in the tank 1 into the liquid storage pipe 21 through the pipe 3. The rotating rod 6 then stirs the material, making the material mix evenly.

[0032] See Figure 4 The piston rod 23 is fixedly connected to a drive handle 25 at the end away from the piston head 22. The operator can control the up and down movement of the piston rod 23 by holding the drive handle 25. After the suction and mixing are completed, the drive handle 25 is pressed in the opposite direction to drive the piston head 22 down, so that the material is compressed and discharged through the discharge valve 24 into the experimental reaction flask.

[0033] See Figure 4 The upper end of the liquid storage tube 21 is sealed, and the piston rod 23 passes through the seal and is slidably connected to the liquid storage tube 21. The sliding connection between the liquid storage tube 21 and the piston rod 23 is equipped with a limit switch to prevent the piston rod 23 from rotating. This sliding connection is not sealed, allowing air to enter the upper part of the piston head 22 to maintain air pressure balance.

[0034] It should be noted that the discharge valve 24 can be selected as a pressure-responsive or manually controlled check valve according to operational requirements.

[0035] See Figure 4 An array of stirring paddles 61 are evenly arranged around the rotating rod 6 from top to bottom. When the rotating rod 6 rotates, it drives the stirring paddles 61 to stir the material, which can effectively enhance the fusion effect of the material. At the same time, the rotating stirring paddles 61 can discharge the air bubbles that enter the material when extracting the material to a certain extent by rotating and stirring, so as to avoid the discharge of internal gas when discharging the material.

[0036] Working principle: Sludge and nutrient solution are injected into the two sides of the partition 11 through the feed port 12 for storage. When discharge is required, the adjustable one-way valve 4 is adjusted to the required scale, the drive handle 25 is pulled to drive the piston head 22 to rise, and the pull rod 5 rises synchronously. The spiral pull rod 5 drives the drive hole 7 to drive the rotating rod 6 to rotate. At the same time, the material in the tank 1 is sucked into the storage pipe 21 through the pipe 3 by air pressure. The rotating rod 6 stirs the material through the stirring paddle 61, so that the materials are mixed evenly. After the extraction is completed, the drive handle 25 is pressed down to drive the piston head 22 to fall, so that the material is discharged through the discharge valve 24 into the experimental reaction bottle.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater, characterized in that... The container includes a tank (1) and a discharge mechanism (2) for premixing materials. The outer periphery of the tank (1) is fixedly connected to the discharge mechanism (2). The tank (1) and the discharge mechanism (2) are connected through a pipe (3). Two sets of adjustable one-way valves (4) are provided on the pipe (3). A partition (11) for separating materials is provided in the middle of the tank (1). The discharge mechanism (2) includes a pull rod (5) and a rotating rod (6). The pull rod (5) has a spiral structure, and the rotating rod (6) has a hollow structure. A drive hole (7) is provided at the upper end of the rotating rod (6). The drive hole (7) has the same cross-sectional shape as the pull rod (5), and the pull rod (5) is slidably connected to the drive hole (7). When the discharge mechanism (2) is pulled up, it uses air pressure to extract the material in the tank (1). When the pull rod (5) moves up, it drives the rotating rod (6) to rotate through the drive hole (7). The rotating rod (6) stirs the material in the discharge mechanism (2).

2. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 1, characterized in that, The upper end of the tank (1) is provided with two sets of closable feed inlets (12), which are respectively located on both sides of the partition (11).

3. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 1, characterized in that, An aeration stone (13) is provided on the bottom wall of the tank (1) on one side of the partition (11), and an air pump (14) is provided on the side of the tank (1). The air pump (14) pipeline passes through the bottom wall of the tank (1) and is connected to the lower end of the aeration stone (13).

4. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 3, characterized in that, The air pump (14) is provided with a connection port for connecting to the air tank at the upper part, and the connection between the air pump (14) pipeline and the bottom wall of the tank (1) is provided with a seal.

5. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 1, characterized in that, The discharge mechanism (2) further includes a liquid storage pipe (21), a piston head (22), a piston rod (23), and a discharge valve (24). The liquid storage pipe (21) is fixedly connected to the tank body (1) on its periphery. The lower ends of the liquid storage pipe (21) are connected to the pipe (3) on both sides. The piston head (22) is slidably connected to the inside of the liquid storage pipe (21). The upper end of the piston head (22) is fixedly connected to the piston rod (23). The lower end of the piston head (22) is fixedly connected to the upper end of the pull rod (5). The piston rod (23) extends upward to the outside of the liquid storage pipe (21) at one end away from the piston head (22). The discharge valve (24) is located at the lower end of the liquid storage pipe (21). The lower end of the rotating rod (6) is rotatably connected to the center of the bottom wall of the liquid storage pipe (21).

6. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 5, characterized in that, A drive handle (25) is fixedly connected to one end of the piston rod (23) away from the piston head (22).

7. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 5, characterized in that, The upper end of the liquid storage tube (21) is sealed, and the piston rod (23) passes through the seal and is slidably connected to the liquid storage tube (21).

8. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 5, characterized in that, The discharge valve (24) is a one-way valve.

9. The sludge supply device for anaerobic toxicity evaluation experiments of industrial wastewater according to claim 1, characterized in that, The rotating rod (6) has an array of stirring paddles (61) evenly arranged from top to bottom around its periphery.

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