Novel baffle plate reactor for radioactive organic waste liquid treatment

Abstract

The utility model relates to the technical field of wastewater treatment devices, in particular to a novel baffle plate reactor for radioactive organic waste liquid treatment. A gas inlet and a liquid inlet are formed in the reaction chamber, and a gas outlet and a liquid outlet are formed in the gas-liquid-solid separation chamber; a lower partition plate and an upper partition plate are arranged in the reaction chamber, the lower partition plate is connected with a reaction chamber bottom plate, an overflow port is reserved between the lower partition plate and a reaction chamber top plate, the upper partition plate is connected with the reaction chamber top plate, a gap is reserved between the upper partition plate and the reaction chamber bottom plate, and the lower partition plate and the upper partition plate form a zigzag separation partition; and a plurality of groups of zigzag separation partitions are arranged in the reaction chamber and divide the reaction chamber into a serpentine channel. The gas inlet end and the liquid inlet end of the equipment effectively improve the gas-liquid mixing effect, and meanwhile gas and liquid can be separated after the reaction of the reactor is completed. The device can realize the aerobic or anaerobic degradation treatment of the wastewater, can also realize the sterile oxidative degradation treatment of the wastewater, and has the characteristics of simple equipment, low cost, small occupied area, wide adaptability and low energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment devices, specifically a novel baffle reactor for the treatment of radioactive organic waste liquid, suitable for the degradation treatment of wastewater by aerobic or anaerobic bacteria. Technical Background

[0002] The baffled reactor is an anaerobic reactor proposed by McCarty et al. at Stanford University in the 1980s. It consists of several vertical baffles that divide the reactor into several chambers connected in series, each of which can be considered a relatively independent upflow anaerobic reaction system. In this reactor, the aqueous phase is the mobile phase, and each chamber has an outlet at the top to discharge the generated gas. The baffled reactor has a series of advantages, including simple structure, low energy consumption, and strong resistance to shock loads.

[0003] Although anaerobic biological treatment has advantages such as low investment, low sludge production, and low operating costs, it also has disadvantages such as high effluent COD concentration, slow treatment rate, unpleasant odor, and strict environmental requirements. With current technology, applying anaerobic digestion alone to wastewater treatment still presents some challenges in ensuring that the effluent meets discharge standards.

[0004] Later, researchers made various improvements to the aforementioned baffle plate. One approach was to modify the structure of the anaerobic baffle reactor to create a composite flow pattern combining plug flow and completely mixed flow, extending the flow path within the reactor and promoting contact between wastewater and sludge. Another approach was to combine anaerobic and aerobic processes, combining the advantages of both anaerobic and aerobic wastewater treatment, thereby improving treatment efficiency. However, baffle reactors are generally customized to meet specific needs, and their single function cannot satisfy every replacement requirement when different functional needs need to be met. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing baffled reactors are not suitable for aerobic reactions, and the problem that there is uneven gas-liquid mixture after gas is introduced into the baffled reactor, thereby providing a new type of baffled reactor.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A novel baffled reactor for treating radioactive organic waste liquid includes a reaction chamber and a gas-liquid-solid separation chamber, which are connected. The reaction chamber has an air inlet and a liquid inlet, while the gas-liquid-solid separation chamber has a gas outlet and a liquid outlet. The reaction chamber has a lower baffle and an upper baffle. The lower baffle is connected to the bottom plate of the reaction chamber and has an overflow port pre-installed between it and the top plate. The upper baffle is connected to the top plate of the reaction chamber and has a gap pre-installed between it and the bottom plate. The lower and upper baffles form a tortuous separation partition. Multiple sets of tortuous separation partitions divide the reaction chamber into a serpentine channel. The air inlet and liquid inlet are connected to the gas outlet and liquid outlet through the serpentine channel. A settling pipe and a discharge valve are located at the bottom of the gas-liquid-solid separation chamber. The discharge valve controls the opening and closing of the settling pipe. This equipment effectively improves the gas-liquid mixing effect at the air and liquid inlets, and also separates the gas and liquid after the reactor reaction is complete.

[0008] The gas-liquid-solid separation chamber is equipped with a partition. One end of the partition is fixedly connected to the gas-liquid-solid separation chamber, and the other end of the partition is a free end that extends into the gas-liquid-solid separation chamber to separate the cavity. The lower edge of the free end is lower than the gas outlet.

[0009] The upper partition of the tortuous separation partition is equipped with a gas-liquid distributor; the gas-liquid distributor is arranged at an angle.

[0010] The upper and lower partitions of the tortuous separation partition are filled with ozone oxidation catalyst to form an ozone oxidation catalyst layer, which constitutes the ozone catalytic partition; the lower partition and the overflow port reserved in the top plate of the reaction chamber are equipped with a filter screen.

[0011] The settling pipe is a conical pipe. The conical pipe is used to collect the precipitated solids, and a valve is installed at the bottom of the funnel to periodically transfer the collected precipitate out of the reactor; the valve is located above the bottom of the reactor.

[0012] The reaction chamber is equipped with multiple sets of tortuous separation partitions or multiple sets of ozone catalytic partitions. Different types of partitions can be selected according to the reaction requirements, improving the equipment's applicability and functionality.

[0013] The air inlet is sealed with a plug to prevent air from passing through, thus ensuring an anaerobic environment for the reaction.

[0014] This utility model embodiment can be used in different application scenarios:

[0015] 1) This reactor can be used for anaerobic oxidation treatment of wastewater when no gas source is supplied;

[0016] 2) When oxygen-containing gas is introduced into this reactor, it can be used for aerobic oxidation treatment of wastewater;

[0017] 3) When oxygen-containing gases, such as ozone, oxygen, or air, are introduced into this reactor, it can be used for wastewater treatment by chemical oxidation.

[0018] 4) When hydrogen peroxide or other liquid oxides are introduced into this reactor, it can be used for wastewater treatment by chemical oxidation.

[0019] 5) Adding a catalyst to this reactor can increase the rate of chemical oxidation treatment of wastewater;

[0020] 6) A static mixer is placed in the upward channel of this reactor, which can be used for wastewater treatment in different fluidization and mixing environments.

[0021] This invention can achieve aerobic or anaerobic degradation treatment of wastewater, as well as sterile oxidative degradation treatment. It features simple equipment, low cost, small footprint, wide adaptability, and low energy consumption. This reactor can be applied to different scenarios and can switch between these scenarios, greatly expanding its application range. In addition to its wide range of applications, the unique design structure significantly enhances its technical performance. The inclined design of the gas-liquid distributor avoids gas piping and improves gas-liquid mixing. This design is simple, low-cost, and requires low maintenance, resulting in lower equipment and operating costs. The serpentine channel allows for multi-mode application, enabling the reactor to adapt to a wider range of wastewater treatment. This invention uses a combination of tortuous separation barriers and ozone catalytic barriers to harmlessly treat radioactive organic wastewater. Simultaneously, it uses plug sealing to meet anaerobic reaction requirements and removes the plug sealing to meet aerobic reaction requirements. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the ozone catalytic barrier of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the air inlet of this utility model, which is sealed by a plug;

[0026] In the diagram: 1. Air inlet; 2. Liquid inlet; 3. Ozone oxidation catalyst layer; 4. Gas-liquid distributor; 5. Overflow outlet; 6. Reaction chamber; 7. Baffle plate; 8. Gas outlet; 9. Gas-liquid-solid separation chamber; 10. Liquid outlet; 11. Settling pipe; 12. Discharge valve; 13. Lower baffle plate; 14. Upper baffle plate; 15. Filter screen. DETAILED DESCRIPTION

[0027] A novel baffled reactor for treating radioactive organic waste liquid is characterized by comprising a reaction chamber 6 and a gas-liquid-solid separation chamber 9, which are connected. The reaction chamber 6 is provided with an air inlet 1 and a liquid inlet 2, while the gas-liquid-solid separation chamber 9 is provided with a gas outlet 8 and a liquid outlet 10. The reaction chamber 6 is provided with a lower baffle 13 and an upper baffle 14. The lower baffle 13 is connected to the bottom plate of the reaction chamber 6, and an overflow port 5 is pre-reserved between the lower baffle 13 and the top plate of the reaction chamber 6. The upper baffle 14... The upper partition 14 is connected to the top plate of the reaction chamber 6, and a gap is reserved between the upper partition 14 and the bottom plate of the reaction chamber 6. The lower partition 13 and the upper partition 14 form a tortuous separation partition. Multiple sets of tortuous separation partitions are provided in the reaction chamber 6, which divide the reaction chamber 6 into a serpentine channel. The air inlet 1 and the liquid inlet 2 are connected to the gas outlet 8 and the liquid outlet 10 through the serpentine channel. The bottom of the gas-liquid-solid separation chamber 9 is provided with a settling pipe 11 and a discharge valve 12. The discharge valve 12 controls the opening and closing of the settling pipe 11.

[0028] The gas-liquid-solid separation chamber 9 is equipped with a partition 7. One end of the partition 7 is fixedly connected to the gas-liquid-solid separation chamber 9, and the other end of the partition 7 is a free end that extends into the gas-liquid-solid separation chamber 9 to separate the cavity; the lower edge of the free end is lower than the gas outlet 8. A gas-liquid distributor 4 is provided at the lower part of the upper partition 14 of the tortuous separation partition; the gas-liquid distributor 4 is arranged at an angle. The space between the upper partition 14 and the lower partition 13 of the tortuous separation partition is filled with ozone oxidation catalyst, forming an ozone oxidation catalyst layer 3 that constitutes the ozone catalytic partition; a filter screen 15 is provided in the overflow port 5 reserved in the lower partition 13 and the top plate of the reaction chamber 6. The filter screen 15 prevents the ozone oxidation catalyst from being dispersed when water is flowing through it. The settling pipe 11 is a conical pipe. Multiple sets of tortuous separation partitions or multiple sets of ozone catalytic partitions are set in the reaction chamber 6. Multiple sets of tortuous separation partitions and ozone catalytic partitions are set in the reaction chamber 6. For domestic water environments, only a tortuous separation barrier can be used, with the number of tortuous separation barriers increased or decreased according to the treatment volume. When applicable to radioactive organic waste liquid environments, an ozone catalytic barrier can be added, with the number of ozone catalytic barriers increased or decreased according to the radioactive treatment volume. The air inlet 1 is sealed with a plug to prevent air from passing through it.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1: Ozone catalytic oxidation of high-concentration organic wastewater

[0031] The reactor consists of multiple ozone catalytic partitions and a tortuous separation partition. The gas-liquid upward flow channel of the baffle reactor is filled with ozone oxidation catalyst. A filter screen is installed between the lower partition and the top of the oxidation reactor to prevent catalyst dust from clogging the gas-liquid distributor of the next partition. There is no filter screen between the oxidation reactor and the gas-liquid-solid separation partition. This embodiment uses ozone (O2). 3 The volume concentration of ozone is 1-5%, the oxygen volume concentration is 85-90%, and the volume concentration of other gases is 2-10%. After ozone and wastewater enter, they pass through the ozone catalytic barrier in sequence, and finally enter the gas-liquid-solid separation barrier. Inside the gas-liquid-solid separation barrier, the gas, liquid, and solid are separated and leave the reactor through their respective outlets.

[0032] Example 2: Direct Ozone Oxidation of Low-Concentration Organic Wastewater

[0033] The reactor consists of multiple ozone catalytic barriers and a tortuous separation barrier. The gas source for the device is ozone (O₂). 3 The volume concentration is 0.5-2%, the oxygen volume concentration is 17-20%, and the volume concentration of other gases is 78-81%. Organic wastewater enters the baffled reactor through inlet 2, and ozone enters the baffled reactor through inlet 1. The gas and wastewater pass through the reaction barrier in sequence and then enter the gas-liquid-solid separation barrier for separation. The gas is discharged from gas outlet 8, the treated wastewater is discharged from liquid outlet 10, and the solids are discharged through 207 after sedimentation.

[0034] Example 3: Anaerobic Treatment of Domestic Wastewater

[0035] The reactor consists of multiple ozone catalytic barriers and a tortuous separation barrier. The inlet 1 is closed, and domestic wastewater enters the baffled reactor through the liquid inlet 2. During the anaerobic treatment of domestic wastewater, both gaseous and solid substances are generated. After passing through the anaerobic reaction barriers, the wastewater enters the gas-liquid-solid separation barrier for separation. The gas exits through the gas outlet 8, the treated wastewater exits through the liquid outlet 10, and the solids settle and are discharged through the settling pipe 11 and the discharge valve 12.

[0036] Example 4: Hydrogen peroxide oxidation treatment of chemical wastewater

[0037] The reactor consists of multiple ozone catalytic barriers and a tortuous separation barrier. The inlet 1 is closed, and chemical wastewater and hydrogen peroxide enter the baffled reactor through the liquid inlet 2. During the oxidation treatment of the chemical wastewater, both gaseous and solid substances are generated. After passing through the oxidation reaction barriers, the wastewater enters the gas-liquid-solid separation barrier for separation. The gas exits from the gas outlet 8, the treated wastewater exits from the liquid outlet 10, and the solids settle and are discharged through the settling pipe 11 and the discharge valve 12.

Claims

1. A novel baffle reactor for treating radioactive organic waste liquid, characterized in that... It includes a reaction chamber (6) and a gas-liquid-solid separation chamber (9), which are connected. The reaction chamber (6) is provided with an air inlet (1) and a liquid inlet (2), and the gas-liquid-solid separation chamber (9) is provided with a gas outlet (8) and a liquid outlet (10). The reaction chamber (6) is provided with a lower partition (13) and an upper partition (14). The lower partition (13) is connected to the bottom plate of the reaction chamber (6), and the lower partition (13) is connected to the top plate of the reaction chamber (6) with an overflow port (5). The upper partition (14) is connected to the top plate of the reaction chamber (6). The upper partition (14) and the bottom plate of the reaction chamber (6) are reserved with a gap. The lower partition (13) and the upper partition (14) form a tortuous separation partition. The reaction chamber (6) is equipped with multiple sets of tortuous separation partitions. The multiple sets of tortuous separation partitions divide the reaction chamber (6) into a serpentine channel. The air inlet (1) and the liquid inlet (2) are connected to the gas outlet (8) and the liquid outlet (10) through the serpentine channel. The bottom of the gas-liquid-solid separation chamber (9) is equipped with a settling pipe (11) and a discharge valve (12). The discharge valve (12) controls the opening and closing of the settling pipe (11).

2. The novel baffle reactor for treating radioactive organic waste liquid according to claim 1, characterized in that... The gas-liquid-solid separation chamber (9) is provided with a partition (7). One end of the partition (7) is fixedly connected to the gas-liquid-solid separation chamber (9), and the other end of the partition (7) is a free end that extends into the gas-liquid-solid separation chamber (9) to separate the cavity. The lower edge of the free end is lower than the gas outlet (8).

3. The novel baffle reactor for treating radioactive organic waste liquid according to claim 1, characterized in that... The upper partition (14) of the tortuous separation partition is provided with a gas-liquid distributor (4) at the lower part; the gas-liquid distributor (4) is arranged at an angle.

4. The novel baffle reactor for treating radioactive organic waste liquid according to claim 3, characterized in that... The upper partition (14) and lower partition (13) of the tortuous separation partition are filled with ozone oxidation catalyst to form an ozone oxidation catalyst layer (3) to form an ozone catalytic partition; the lower partition (13) and the overflow port (5) reserved in the top plate of the reaction chamber (6) are equipped with a filter screen (15).

5. A novel baffle reactor for treating radioactive organic waste liquid according to claim 1, characterized in that... The settling pipe (11) is a tapered pipe.

6. A novel baffle reactor for treating radioactive organic waste liquid according to claim 4, characterized in that... The reaction chamber (6) is equipped with multiple sets of tortuous separation partitions or multiple sets of ozone catalytic partitions.

7. A novel baffle reactor for treating radioactive organic waste liquid according to claim 4, characterized in that... The reaction chamber (6) is equipped with multiple sets of tortuous separation partitions and ozone catalytic partitions.

8. A novel baffle reactor for treating radioactive organic waste liquid according to claim 1, characterized in that... The air inlet (1) is blocked by a plug, which prevents air from passing through the air inlet (1).

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