Combined liquor wastewater treatment system and method based on microwave technology

Abstract

The application discloses a combined liquor wastewater treatment system and method based on microwave technology, and relates to the field of liquor wastewater treatment. The system comprises a regulating device, a microwave decomposition device, an anaerobic tank, a good tank and a microwave Fenton device connected in sequence. The regulating device is used for buffering water quality fluctuation and adjusting the PH value of wastewater. The microwave decomposition device utilizes microwave electromagnetic to make wastewater produce strong oxidative free radicals to degrade macromolecular organic matter. The anaerobic tank gradually decomposes organic matter through anaerobic microorganisms to convert macromolecular organic matter into methane and carbon dioxide. The good tank converts organic matter in wastewater into CO2 and H2O through the metabolic action of aerobic microorganisms. The microwave Fenton device generates hydroxyl radicals under acidic conditions by using hydrogen peroxide and ferrous ions to remove COD in wastewater.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a combined liquor wastewater treatment system based on microwave technology. Background Technology

[0002] The raw materials for baijiu (Chinese liquor) are mainly wheat, corn, and sorghum. Wastewater generated during the brewing process includes distillation bottom pot water, koji box cleaning water, koji printing wastewater, baijiu lees waste liquid, fermentation tank leachate, grain soaking water, distillation cooling water, and equipment cleaning wastewater. This type of wastewater mainly consists of amino acids, low-carbon alcohols (such as ethanol and pentanol), and fatty acids, classifying it as high-concentration organic wastewater. This type of wastewater is characterized by high chemical oxygen demand (COD) concentration, high suspended solids (SS) content, strong biodegradability, and complex composition. However, existing baijiu wastewater treatment methods are ineffective and cannot effectively remove COD from the wastewater. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and the purpose is to provide a combined liquor wastewater treatment system based on microwave technology.

[0004] This invention is achieved through the following technical solution:

[0005] A combined baijiu wastewater treatment system based on microwave technology includes a regulating device, a microwave decomposition device, an anaerobic chamber, an aerobic chamber, and a microwave Fenton device connected in sequence. The regulating device is used to buffer water quality fluctuations and adjust the pH value of the wastewater. The microwave decomposition device uses microwave electromagnetic induction to generate strong oxidizing free radicals in the wastewater, degrading macromolecular organic matter. The anaerobic chamber uses anaerobic microorganisms to decompose organic matter step by step, converting macromolecular organic matter into methane and carbon dioxide. The aerobic chamber uses the metabolic action of aerobic microorganisms to convert organic matter in the wastewater into CO2 and H2O. The microwave Fenton device uses hydrogen peroxide and ferrous ions to generate hydroxyl free radicals under acidic conditions to remove COD from the wastewater.

[0006] The adjusting device includes an adjusting box and a driving mechanism. The rotating shaft of the driving mechanism extends into the adjusting box. An expansion member and a first stirring plate are provided on the rotating shaft. A first connecting member is provided on the expansion member. A plurality of first air holes and a second connecting member communicating with the first air holes are provided on the first stirring plate. The first stirring plate can move axially along the rotating shaft to connect the first connecting member and the second connecting member.

[0007] The microwave decomposition device includes a decomposition box and a microwave source disposed on the decomposition box, and the adjustment box is connected to the decomposition box via a conduit.

[0008] Furthermore, the rotating shaft is provided with a first through hole, and the side walls of the rotating shaft are provided with strip-shaped openings, which are connected to the first through hole;

[0009] The first stirring plate is located inside the strip-shaped opening, and a guide block is provided at the bottom of the first stirring plate, the guide block being located inside the first through hole.

[0010] Furthermore, the inflator includes an annular airbag, a fixed plate is provided on the rotating shaft, the airbag is sleeved on the rotating shaft, and the top of the airbag is connected to the bottom of the fixed plate.

[0011] Furthermore, the first connector includes a telescopic tube and a connector, both of which are located within the first through hole. The telescopic tube communicates with the airbag, and the connector is connected to the bottom of the telescopic tube.

[0012] The connector has a cavity communicating with the telescopic tube, and the bottom of the connector also has an inlet communicating with the cavity. The cavity has a first elastic element and a sealing plate. The first elastic element pushes the sealing plate to seal the inlet.

[0013] The second connector includes a connecting column whose outer diameter is the same as the inner diameter of the inlet. The connecting column is located in the first through hole and connected to the top of the first stirring plate. The side wall of the connecting column has a first channel that communicates with the first air hole.

[0014] Furthermore, the regulating box is also provided with an inlet pipe, and a horizontal pipe is provided on the side wall of the regulating box where the inlet pipe extends into the regulating box. A connecting sleeve is provided at the end of the horizontal pipe. An annular groove is also provided on the rotating shaft, and a second channel is also provided inside the rotating shaft. One end of the second channel is connected to the annular groove, and the other end is connected to the telescopic pipe.

[0015] The connecting sleeve is fitted onto the annular groove of the rotating shaft, and the horizontal tube communicates with the annular groove.

[0016] Furthermore, the bottom of the regulating box is also equipped with an air pump, and the rotating shaft is also equipped with a second through hole communicating with the first through hole, the inner diameter of the second through hole being larger than that of the first through hole. The air pump is also connected to the second through hole.

[0017] The second through hole is provided with a movable block and a push rod. The outer diameter of the movable block is the same as the inner diameter of the second through hole, and the push rod is used to push the guide block to move in the first through hole.

[0018] Furthermore, a second stirring plate is provided on the side wall of the rotating shaft, and the second stirring plate is located below the first stirring plate;

[0019] The surface of the second stirring plate is provided with several second air holes, and the rotating shaft is also provided with a third channel. One end of the third channel is connected to the second through hole, and the other end is connected to the second air hole. The rotating shaft is also provided with a fourth channel, which penetrates the third channel. A sealing block for sealing the fourth channel is provided in the fourth channel.

[0020] Furthermore, a first blind hole is provided on the inner wall of the second through hole. The bottom of the first blind hole is connected to the fourth channel. A second elastic element and a first unlocking block are provided in the first blind hole. The outer diameter of the first unlocking block is the same as the inner diameter of the first blind hole. A third through hole is also provided on the sealing block. A locking groove is provided on the inner wall of the second blind hole. An installation groove is provided on the first unlocking block. A third elastic element and a locking block are provided in the installation groove.

[0021] Furthermore, a second blind hole is provided on the inner wall of the second through hole. The second blind hole is located below the first blind hole and is connected to the locking groove. A fourth elastic element and a second unlocking block are provided inside the second blind hole. The outer diameter of the second unlocking block is the same as the inner diameter of the second blind hole.

[0022] A combined method for treating liquor wastewater based on microwave technology includes the following steps:

[0023] 1) Discharge the wastewater generated from the brewing of baijiu to the regulating device and use the regulating device to adjust the pH value of the wastewater;

[0024] 2) The wastewater in the regulating device is transported to the microwave decomposition device, hydrogen peroxide is added to the microwave decomposition device, and the microwave electromagnetic field is used to generate strong oxidizing free radicals in the wastewater to degrade the large molecular organic matter in the wastewater.

[0025] 3) The wastewater after microwave hydrolysis is transported to the anaerobic chamber, where anaerobic microorganisms decompose organic matter step by step, converting macromolecular organic matter into methane and carbon dioxide;

[0026] 4) The wastewater treated in step 3) is transported to the first sedimentation tank for solid-liquid separation;

[0027] 5) The wastewater after solid-liquid separation is transported to the aerobic tank, where the organic matter in the wastewater is converted into CO2 and H2O through the metabolic action of aerobic microorganisms;

[0028] 6) The wastewater treated in step 5) is transferred to the second sedimentation tank for further solid-liquid separation;

[0029] 7) The wastewater treated in step 6) is transported to a microwave Fenton device, where microwave catalysis is used to generate thousands of times more hydroxyl radicals from hydrogen peroxide and ferrous ions under acidic conditions, thereby removing the remaining COD from the wastewater.

[0030] 8) The wastewater treated in step 7) is transferred to the third sedimentation tank for further solid-liquid separation. Wastewater that meets the Class A standard (50 mg / L) for integrated wastewater discharge is then discharged.

[0031] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0032] 1. This invention utilizes the microwave electromagnetic field of a microwave decomposition device to generate strong oxidizing free radicals in wastewater, thereby degrading macromolecular organic matter. Specifically, it uses high-energy electrons to collide with and heat organic molecules, specifically increasing the kinetic energy of organic molecules in wastewater. This achieves the decomposition and cracking of recalcitrant organic matter under mild conditions, thus replacing the harsh conditions required by conventional advanced oxidation technologies. This reduces the treatment cost of organic matter in wastewater, improves treatment efficiency, and completes the decomposition chemical reaction from organic matter to inorganic matter. It features fast reaction, complete reaction, and controllable reaction.

[0033] 2. The first stirring plate of this invention can move vertically within the regulating tank, changing its height to allow for stirring of wastewater at different depths within the tank, ensuring thorough and uniform mixing. Simultaneously, as the first stirring plate moves upwards, it compresses the air bladder, causing hydrogen peroxide stored within the air bladder to be ejected from the first air hole on the first stirring plate and applied to the wastewater in the regulating tank. This enhances the mixing strength between the wastewater and hydrogen peroxide, thereby improving the removal efficiency of molecular organic matter in the subsequent wastewater treatment. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a flowchart of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the adjustment device and the microwave decomposition device of the present invention;

[0037] Figure 3 For the present invention Figure 1 A magnified structural diagram of section A in the middle;

[0038] Figure 4 For the present invention Figure 1 A magnified structural diagram of section B in the middle;

[0039] Figure 5 This is a schematic diagram of the structure of the regulating box of the present invention in another state;

[0040] Figure 6 For the present invention Figure 4 A magnified structural diagram of section C in the middle;

[0041] Figure 7 For the present invention Figure 4 A magnified structural diagram of section D in the middle;

[0042] Figure 8 This is a partial structural diagram of the rotating shaft of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the first stirring plate of the present invention.

[0044] The attached diagram shows the markings and corresponding component names:

[0045] 1. Adjustment device; 2. Microwave decomposition device; 3. Anaerobic chamber; 4. First sedimentation chamber; 5. Optimal aeration chamber; 6. Second sedimentation chamber; 7. Microwave Fenton device; 8. Third sedimentation chamber; 9. Lifting pump; 101. Adjustment box; 102. Drive mechanism; 103. Liquid inlet pipe; 104. Expansion component; 105. Rotating shaft; 107. Second stirring plate; 108. Air pump; 109. First stirring plate; 110. Top rod; 111. Second unlocking block; 112. Movable block; 113. Sixth elastic element Components; 114. Third channel; 115. Blocking block; 116. Airbag; 117. Telescopic tube; 118. Connector; 119. Blocking plate; 120. Connecting post; 121. First unlocking block; 122. Locking block; 123. First through hole; 124. Strip-shaped opening; 125. Annular groove; 126. Second channel; 127. First air hole; 128. Guide block; 129. Second through hole; 130. Connecting sleeve; 201. Disassembly box; 202. Microwave source; 203. Conduit. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0047] Example 1

[0048] like Figure 1As shown, the system includes a regulating device 1, a microwave decomposition device 2, an anaerobic tank 3, a first sedimentation tank 4, an aerobic tank 5, a second sedimentation tank, a microwave Fenton device 7, and a third sedimentation tank 8 connected in sequence. The regulating device 1 is used to buffer water quality fluctuations and adjust the pH value of the wastewater. The microwave decomposition device 2 uses microwave electromagnetic induction to generate strong oxidizing free radicals in the wastewater, degrading macromolecular organic matter. The anaerobic tank 3 uses anaerobic microorganisms to decompose organic matter step by step, converting macromolecular organic matter into methane and carbon dioxide. The first sedimentation tank 4 is used for solid-liquid separation of the wastewater treated by the anaerobic tank 3. The aerobic tank 5 uses the metabolic action of aerobic microorganisms to convert organic matter in the wastewater treated by the first sedimentation tank 4 into CO2 and H2O. The second sedimentation tank 6 is used for further solid-liquid separation of the wastewater treated by the aerobic tank 5. The microwave Fenton device 7 uses hydrogen peroxide and ferrous ions to generate hydroxyl free radicals under acidic conditions to remove COD from the wastewater treated by the second sedimentation tank 6. The third sedimentation tank 8 is used for further solid-liquid separation of the wastewater treated by the microwave Fenton device 7. The separated wastewater can be discharged normally.

[0049] Example 2

[0050] like Figures 2 to 9 As shown, the adjusting device includes an adjusting box 101 and a driving mechanism 102. The rotating shaft 105 of the driving mechanism 102 extends into the adjusting box 101. An expansion member 104 and a first stirring plate 109 are provided on the rotating shaft 105. A first connecting member is provided on the expansion member 104. A plurality of first air holes 127 and a second connecting member communicating with the first air holes 127 are provided on the first stirring plate 109. The first stirring plate 109 can move axially along the rotating shaft 105 to communicate with the first connecting member and the second connecting member. The microwave decomposition device includes a decomposition box 201 and a microwave source 202 disposed on the decomposition box 201. The adjusting box 101 and the decomposition box 201 are connected by a conduit 203.

[0051] This technical solution treats wastewater generated during the production of baijiu (Chinese liquor) using a regulating device and a microwave decomposition device. The wastewater is transported to a regulating tank 101, and then an appropriate amount of hydrogen peroxide is added. A drive mechanism 102, a motor, drives a rotating shaft 105 to rotate within the regulating tank 101. A first stirring plate 109 acts on the wastewater and hydrogen peroxide in the regulating tank 101, ensuring thorough mixing. Simultaneously, this technology… To improve the thorough mixing of hydrogen peroxide and wastewater, the rotating shaft 105 is equipped with an expansion member 104, and the first stirring plate 109 can move on the rotating shaft 105. Thus, while the rotating shaft 105 drives the first stirring plate 109 to rotate, the first stirring plate 109 can also move vertically within the regulating tank 101, changing its position. This allows the first stirring plate 109 to act on wastewater at different depths, improving the mixing strength of wastewater and hydrogen peroxide within the regulating tank 101.

[0052] Meanwhile, when the first stirring plate 109 moves to the expansion member 104, the first connecting member and the second connecting member are connected. Thus, when the first stirring plate 109 continues to move towards the expansion member 104, it will squeeze the expansion member 104, thereby transferring the medium in the expansion member 104 to the first air hole 127 on the first stirring plate 109 through the first connecting member and the second connecting member. Finally, it is sprayed out from the first air hole 127 and acts on the wastewater in the regulating tank 101, achieving the effect of bubbling the wastewater in the regulating tank 101, and further improving the full mixing between the wastewater and hydrogen peroxide.

[0053] After thorough mixing of wastewater and hydrogen peroxide in the equalization tank, the wastewater in the equalization tank 101 is transported to the decomposition tank 201 using the lift pump 9 on the conduit 203. During the transport of the wastewater in the conduit 203, the hydrogen peroxide in the conduit 203 within the decomposition tank 201 decomposes under the action of the microwave source 202, generating strong oxidizing hydroxyl radicals. This increases the probability of hydroxyl radicals colliding with organic molecules in the wastewater, thereby improving the removal efficiency of large organic molecules in the wastewater. In addition, the non-thermal effect of microwaves can weaken the chemical bonds of reactant molecules, lower the activation energy of the reaction, increase the reaction rate, and stimulate the decomposition of organic matter, so that the wastewater can initially reduce COD and improve biodegradability in the subsequent sedimentation tank.

[0054] In another embodiment, the conduit 203 located in the decomposition box 201 is configured in a serpentine or spiral shape to increase the time that the microwave source 202 interacts with the wastewater in the conduit 203.

[0055] The rotating shaft 105 is provided with a first through hole 123, and the side walls of the rotating shaft 105 are provided with strip-shaped openings 124, which are connected to the first through hole 123; the first stirring plate 109 is located in the strip-shaped openings 124, and the bottom of the first stirring plate 109 is provided with a guide block 128, which is located in the first through hole 123.

[0056] In this embodiment, in order to ensure that the first stirring plate 109 can move on the rotating shaft 105 and change the height of the first stirring plate 109 to meet the stirring of sewage at different depths, a first through hole 123 and a strip opening 124 are provided on the rotating shaft 105. The width of the strip opening 124 is smaller than the inner diameter of the first through hole 123. This ensures that the guide block 128 located in the first through hole 123 does not fall off from the strip openings 124 on both sides. It can only move vertically in the first through hole 123. When the guide block 128 moves in the first through hole 123, the first stirring plate 109 will move in the strip opening 124.

[0057] The expansion member 104 includes an airbag 116 with an annular structure. A fixing plate is provided on the rotating shaft 105. The airbag 116 is sleeved on the rotating shaft 105, and the top of the airbag 116 is connected to the bottom of the fixing plate.

[0058] In this embodiment, the expansion member 104 is an airbag 116, which is made of nitrile rubber, a corrosion-resistant material. Several springs are provided inside the airbag 116, and the springs are distributed along the axial direction of the rotation shaft 105. The springs are used to ensure that the airbag 116 is in an inflated state.

[0059] The first connector includes a telescopic tube 117 and a connector 118, both located within the first through hole 123. The telescopic tube 117 communicates with the airbag 116, and the connector 118 is connected to the bottom of the telescopic tube 117. The connector 118 has a cavity communicating with the telescopic tube 117, and the bottom of the connector 118 has an inlet communicating with the cavity. The cavity contains a first elastic element and a sealing plate 119, the first elastic element pushing the sealing plate 119 to seal the inlet. The second connector includes a connecting post 120 with an outer diameter matching the inner diameter of the inlet. The connecting post 120 is located within the first through hole and connected to the top of the first stirring plate 109. The side wall of the connecting post 120 has a first channel communicating with the first air hole 127.

[0060] To achieve communication between the first and second connecting parts, the first connecting part includes a telescopic tube 117 and a connector 118. Initially, the sealing plate 119 inside the connector 118 seals the inlet under the action of the first elastic element, and the telescopic tube 117 and the airbag 116 are in a closed state. When the first stirring plate 109 moves towards the airbag 116, the connecting post 120 on the first stirring plate 109 extends into the inlet and pushes the sealing plate 119 back. When the first channel on the side wall of column 120 extends into the cavity, the telescopic tube 117 will be connected to the first channel. Therefore, when the first stirring plate 109 squeezes the airbag 116, the fluid medium in the airbag 116 will pass through the telescopic tube 117, the cavity, the first channel and the first air hole 127 in sequence, and finally the fluid medium in the airbag 116 will be applied to the wastewater in the regulating tank 101 through the first air hole 127 to achieve the purpose of bubbling the wastewater, thereby improving the mixing strength between hydrogen peroxide and sewage.

[0061] The regulating box 101 is also provided with an inlet pipe 103. The inlet pipe 103 extends into the side wall of the regulating box 101 and is also provided with a horizontal pipe. The end of the horizontal pipe is provided with a connecting sleeve 130. The rotating shaft 105 is also provided with an annular groove 125. The rotating shaft 105 is also provided with a second channel 126. One end of the second channel 126 is connected to the annular groove 125 and the other end is connected to the telescopic pipe 117. The connecting sleeve 130 is fitted on the annular groove 125 of the rotating shaft 105 and the horizontal pipe is connected to the annular groove.

[0062] In this embodiment, the inlet pipe 103 is connected to a tank containing hydrogen peroxide. Hydrogen peroxide can be delivered into the horizontal pipe through the inlet pipe 103. The hydrogen peroxide then enters the second channel 126 through the annular groove 125 and is finally delivered into the airbag 116. The hydrogen peroxide is temporarily stored in the airbag 116. When the first stirring plate 109 squeezes the airbag 116, the hydrogen peroxide stored in the airbag 116 can be sprayed out from the first air hole 127 through the first connector and the second connector, acting on the wastewater so that the wastewater and hydrogen peroxide can be fully mixed.

[0063] Because the wastewater generated during the production of baijiu (Chinese liquor) may fluctuate drastically due to factors such as production batches and cleaning cycles, a regulating tank 101 is used to mix and buffer the wastewater to make its concentration more uniform, thus avoiding impact on the subsequent microwave decomposition device. Therefore, when wastewater of different concentrations is discharged into the regulating tank 101 simultaneously, the first stirring plate 109 is used to stir the wastewater of different concentrations to make it more uniform before adding hydrogen peroxide to the regulating tank 101. Therefore, in this embodiment, the added hydrogen peroxide is stored in the airbag 116. When the rotating shaft 105 drives the first stirring plate 109 to rotate, it first stirs the wastewater of different concentrations discharged into the regulating tank 101 to make its concentration tend to be uniform. During the stirring process, the first stirring plate 109 moves towards the air bag 116 and eventually connects the first connecting member with the second connecting member. In this way, when the first stirring plate 109 squeezes the air bag 116, the hydrogen peroxide stored in the air bag 116 will act on the wastewater through the first air hole 127 on the first stirring plate 109, so that the hydrogen peroxide and the uniformly mixed wastewater can be fully mixed again.

[0064] The bottom of the regulating box 101 is also equipped with an air pump 108, and the rotating shaft 105 is also equipped with a second through hole 129 communicating with the first through hole 123. The inner diameter of the second through hole 129 is larger than that of the first through hole 123. The air pump 108 is also connected to the second through hole 129. The second through hole 129 is equipped with a movable block 112 and a push rod 110. The outer diameter of the movable block 112 is the same as the inner diameter of the second through hole 129, and the push rod 110 is used to push the guide block 128 to move within the first through hole 123.

[0065] In this embodiment, in order to ensure that the first stirring plate 109 can move smoothly in the vertical direction in the regulating box 101 and change the position of the first stirring plate 109, an air pump 108 is also provided. When the air pump 108 is working, it can deliver pressurized gas into the second through hole 129 of the rotating shaft 105. The pressurized gas entering the second through hole 129 pushes the movable block 112 to move upward in the second through hole 129, thereby causing the push rod 110 to push the guide block 128 to move upward in the first through hole 123, thus realizing the adjustment of the position of the first stirring plate 109.

[0066] In another embodiment, the inner bottom of the adjustment box 101 is provided with a bearing that matches the rotating shaft 105, thus ensuring that the lower end of the rotating shaft 105 can be rotatably connected to the bottom of the adjustment box 101.

[0067] The rotating shaft 105 is also provided with a second stirring plate 107 on its side wall, which is located below the first stirring plate 109. The surface of the second stirring plate 107 is provided with a plurality of second air holes. The rotating shaft 105 is also provided with a third channel 114, one end of which is connected to the second through hole 129 and the other end is connected to the second air hole. The rotating shaft 105 is also provided with a fourth channel, which passes through the third channel 114. The fourth channel is provided with a sealing block 115 for sealing the fourth channel.

[0068] In this embodiment, in order to further improve the stirring force of the sewage, a second stirring plate 107 is also provided on the rotating shaft 105. The second stirring plate 107 is close to the inner bottom of the regulating tank 101, and the wastewater in the lower part of the regulating tank 101 can be stirred by the provided second stirring plate 107.

[0069] The inner wall of the second through hole 129 is also provided with a first blind hole. The bottom of the first blind hole is connected to the fourth channel. The first blind hole is provided with a second elastic element and a first unlocking block 121. The outer diameter of the first unlocking block 121 is the same as the inner diameter of the first blind hole. The sealing block 115 is also provided with a third through hole. The inner wall of the second blind hole is provided with a locking groove. The first unlocking block 121 is provided with an installation groove. The installation groove is provided with a third elastic element and a locking block 122.

[0070] The inner wall of the second through hole 129 is also provided with a second blind hole. The second blind hole is located below the first blind hole. The second blind hole is connected to the locking groove. The second blind hole is provided with a fourth elastic element and a second unlocking block 111. The outer diameter of the second unlocking block 111 is the same as the inner diameter of the second blind hole.

[0071] In this embodiment, to further enhance the stirring force of the second stirring plate 107 on the waste, several second air holes are also provided on the second stirring plate 107. Simultaneously, a third channel 114 and a fourth channel are provided within the rotating shaft 105. The fourth channel and the third channel 114 are perpendicularly connected. A fifth elastic element and a sealing block 115 are provided within the fourth channel. The inner diameter of the fourth channel is larger than the inner diameter of the third channel 114, ensuring that the sealing block 115 can seal the third channel 114. Initially, the fifth elastic element causes the third through hole on the sealing block 115 to be within the fourth channel. When the pressurized gas generated by the air pump 108 enters the second through hole 129, it pushes the movable block 112 upwards within the second through hole 129. When the movable block 112 moves to the first unlocking block 121, the... The side wall of the movable block 112 will push the first unlocking block 121 back into the first blind hole. When the first unlocking block 121 retracts, it will squeeze the air in the first blind hole, causing a portion of the air in the first blind hole to enter the fourth channel. This will push the sealing block 115 in the fourth channel toward the fifth elastic element, eventually causing the third through hole on the sealing block 115 to move into the third channel 114. Under the action of the third through hole, the third channel 114 will be opened. At this time, the operation of the air pump 108 will be stopped, and the movable block 112 will retract downwards. During the retraction process, the air in the second through hole 129 will be squeezed into the third channel 114. The air that enters the third channel 114 will eventually be discharged through the second air hole on the second stirring plate 107, thus achieving the purpose of bubbling the wastewater in the lower layer of the regulating tank 101.

[0072] A sixth elastic element 113 is also provided in the second through hole 129 of the rotating shaft 105. The sixth elastic element 113 is connected to the movable block. The bottom of the regulating box 101 is also provided with an air inlet. The air pump 108 is connected to the second through hole 129 through the air inlet. A one-way valve is provided in the second through hole 129. The one-way valve is used to ensure that the gas generated by the air pump 108 can enter the second through hole 129, while the air in the second through hole 129 cannot flow back through the one-way valve.

[0073] In this way, the sixth elastic element 113 can be used to pull the movable block 112 back quickly in the second through hole 129, thereby squeezing the remaining air in the second through hole 129 to the second air hole of the second stirring plate 107, so as to achieve the purpose of bubbling the wastewater in the regulating tank 101.

[0074] To prevent the first unlocking block 121 from retracting from the first blind hole during the downward retraction of the movable block 112, thus creating negative pressure in the first blind hole and causing the third through hole on the sealing block 115 to be moved out of the third channel 114, the first unlocking block 121 is also provided with an upper mounting groove. The mounting groove contains a third elastic element and a locking block 122. When the movable block 112 pushes the end of the first unlocking block 121 completely back into the first blind hole, the locking block 122, under the action of the third elastic element, is inserted into the locking groove, thereby fixing the first unlocking block 121 in the first blind hole. When the movable block 112 retracts to the second unlocking block 111, the side wall of the movable block 112 pushes the second unlocking block... 111 retracts into the second blind hole. During the retraction process, the second unlocking block 111 compresses the air in the second blind hole, causing some of the air in the second blind hole to enter the unlocking groove, pushing the locking block 122 out of the unlocking groove, removing the restriction on the first unlocking block 121, and thus allowing the first unlocking block 121 to re-enter the second through hole 129. During the movement of the first unlocking block 121, the negative pressure generated in the first blind hole will cause the third through hole on the sealing block 115 to move back into the fourth channel, disconnecting the third channel 114, so that when the air pump 108 delivers pressurized gas to the second through hole 129, the pressurized gas entering the second through hole 129 will not leak through the third channel 114.

[0075] In another embodiment, the first unlocking block 121 and the second unlocking block 111 are both provided with inclined plates at the ends of the second through hole 129, so as to ensure that the movable block 112 can smoothly push the first unlocking block 121 and the second unlocking block 111 to move radially along the rotation axis 105 when moving in the second through hole 129.

[0076] Example 3

[0077] The anaerobic tank 4, the first sedimentation tank 4, the aerobic tank 5, the second sedimentation tank 6, the microwave Fenton tank 7, and the third sedimentation tank 8 are all existing technologies, and their wastewater treatment principles will not be elaborated here.

[0078] Example 4

[0079] A combined method for treating liquor wastewater based on microwave technology includes the following steps:

[0080] 1) Discharge the wastewater generated from the brewing of baijiu to the regulating device 1, and use the regulating device 1 to adjust the pH value of the wastewater;

[0081] 2) The wastewater in the regulating device 1 is transported to the microwave decomposition device 2. Hydrogen peroxide is added to the microwave decomposition device 2. The microwave electromagnetic field is used to generate strong oxidizing free radicals in the wastewater, which degrade the large molecular organic matter in the wastewater.

[0082] 3) The wastewater after microwave hydrolysis is transported to anaerobic tank 3, where anaerobic microorganisms decompose organic matter step by step, converting macromolecular organic matter into methane and carbon dioxide;

[0083] 4) The wastewater treated in step 3) is transported to the first sedimentation tank 4 for solid-liquid separation.

[0084] 5) The wastewater after solid-liquid separation is transported to the aerobic tank 5, where the organic matter in the wastewater is converted into CO2 and H2O through the metabolic action of aerobic microorganisms;

[0085] 6) The wastewater treated in step 5) is transferred to the second sedimentation tank 6 for further solid-liquid separation;

[0086] 7) The wastewater treated in step 6) is transported to the microwave Fenton device 7, where microwave catalysis is used to generate thousands of times more hydroxyl radicals from hydrogen peroxide and ferrous ions under acidic conditions, thereby removing the remaining COD from the wastewater.

[0087] 8) The wastewater treated in step 7) is transported to the third sedimentation tank 8 for further solid-liquid separation. The wastewater that meets the Class A standard (50mg / L) for integrated wastewater discharge is then discharged.

[0088] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A combined liquor wastewater treatment system based on microwave technology, characterized in that, The system includes a regulating device (1), a microwave decomposition device (2), an anaerobic chamber (3), an aerobic chamber (5), and a microwave Fenton device (7) connected in sequence. The regulating device (1) is used to buffer water quality fluctuations and regulate the pH value of wastewater. The microwave decomposition device (2) uses microwave electromagnetic induction to generate strong oxidizing free radicals in wastewater, which degrade macromolecular organic matter. The anaerobic chamber (3) decomposes organic matter step by step through anaerobic microorganisms, converting macromolecular organic matter into methane and carbon dioxide. The aerobic chamber (5) converts organic matter in wastewater into CO2 and H2O through the metabolic action of aerobic microorganisms. The microwave Fenton device (7) uses hydrogen peroxide and ferrous ions to generate hydroxyl free radicals under acidic conditions to remove COD from wastewater. The regulating device (1) includes a regulating box (101) and a driving mechanism (102). The rotating shaft (105) of the driving mechanism (102) extends into the regulating box (101). An expansion member (104) and a first stirring plate (109) are provided on the rotating shaft (105). A first connecting member is provided on the expansion member (104). A plurality of first air holes (127) and a second connecting member communicating with the first air holes (127) are provided on the first stirring plate (109). The first stirring plate (109) can move axially along the rotating shaft (105) to communicate with the first connecting member and the second connecting member. The microwave decomposition device (2) includes a decomposition box (201) and a microwave source (202) provided on the decomposition box (201). The regulating box (101) and the decomposition box (201) are connected by a conduit (203). The rotating shaft (105) is provided with a first through hole (123), and the side walls of the rotating shaft (105) are provided with strip-shaped openings (124), and the strip-shaped openings (124) are connected to the first through hole (123); the first stirring plate (109) is located in the strip-shaped openings (124), and the bottom of the first stirring plate (109) is provided with a guide block (128), and the guide block (128) is located in the first through hole (123); The inflator (104) includes an airbag (116) with an annular structure. A fixing plate is provided on the rotating shaft (105). The airbag (116) is sleeved on the rotating shaft (105), and the top of the airbag (116) is connected to the bottom of the fixing plate. The first connector includes a telescopic tube (117) and a connector (118). The telescopic tube (117) and the connector (118) are both located in the first through hole (123). The telescopic tube (117) communicates with the airbag (116), and the connector (118) is connected to the bottom of the telescopic tube (117). The connector (118) has a cavity communicating with the telescopic tube (117). The bottom of the connector (118) also has an inlet communicating with the cavity. The cavity has a first elastic element and a sealing plate (119). The first elastic element pushes the sealing plate (119) to seal the inlet. The second connector includes a connecting column (120) with an outer diameter consistent with the inner diameter of the inlet. The connecting column (120) is located in the first through hole and connected to the top of the first stirring plate (109). The side wall of the connecting column (120) has a first channel communicating with the first air hole (127).

2. The combined liquor wastewater treatment system based on microwave technology according to claim 1, characterized in that, The regulating box (101) is also provided with an inlet pipe (103). The inlet pipe (103) extends into the side wall of the regulating box (101) and is also provided with a horizontal pipe. The end of the horizontal pipe is provided with a connecting sleeve (130). The rotating shaft (105) is also provided with an annular groove (125). The rotating shaft (105) is also provided with a second channel (126). One end of the second channel (126) is connected to the annular groove (125), and the other end is connected to the telescopic pipe (117). The connecting sleeve (130) is fitted onto the annular groove (125) of the rotating shaft (105), and the horizontal tube is connected to the annular groove (125).

3. The combined liquor wastewater treatment system based on microwave technology according to claim 1, characterized in that, The bottom of the regulating box (101) is also provided with an air pump (108), and the rotating shaft (105) is also provided with a second through hole (129) that communicates with the first through hole (123). The inner diameter of the second through hole (129) is larger than that of the first through hole (123), and the air pump (108) is connected to the second through hole (129). The second through hole (129) is provided with a movable block (112) and a push rod (110). The outer diameter of the movable block (112) is the same as the inner diameter of the second through hole (129). The push rod (110) is used to push the guide block (128) to move in the first through hole (123).

4. The combined liquor wastewater treatment system based on microwave technology according to claim 3, characterized in that, A second stirring plate (107) is also provided on the side wall of the rotating shaft (105), and the second stirring plate (107) is located below the first stirring plate (109); The surface of the second stirring plate (107) is provided with several second air holes. The rotating shaft (105) is also provided with a third channel (114). One end of the third channel (114) is connected to the second through hole (129), and the other end is connected to the second air hole. The rotating shaft (105) is also provided with a fourth channel, which passes through the third channel (114). The fourth channel is provided with a sealing block (115) for sealing the fourth channel.

5. The combined liquor wastewater treatment system based on microwave technology according to claim 4, characterized in that, The inner wall of the second through hole (129) is also provided with a first blind hole. The bottom of the first blind hole is connected to the fourth channel. The first blind hole is provided with a second elastic element and a first unlocking block (121). The outer diameter of the first unlocking block (121) is the same as the inner diameter of the first blind hole. The sealing block (115) is also provided with a third through hole. The inner wall of the first blind hole is provided with a locking groove. The first unlocking block (121) is provided with an installation groove. The installation groove is provided with a third elastic element and a locking block (122).

6. The combined liquor wastewater treatment system based on microwave technology according to claim 5, characterized in that, The inner wall of the second through hole (129) is also provided with a second blind hole. The second blind hole is located below the first blind hole. The second blind hole is connected to the locking groove. The second blind hole is provided with a fourth elastic element and a second unlocking block (111). The outer diameter of the second unlocking block (111) is the same as the inner diameter of the second blind hole.

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