Flocculation precipitation device for laboratory pollution control system

Abstract

A flocculent precipitation device for a laboratory pollution control system comprises at least one flocculent precipitation tank, at least one cooling tank, at least one submersible fan assembly arranged in the cooling tank, at least one aeration assembly arranged in the flocculent precipitation tank and cooling water which is arranged in the cooling tank and submerges the submersible fan assembly. The submersible fan assembly is used for providing air for the aeration assembly, so that the aeration assembly generates bubbles in the flocculation sedimentation tank. According to the utility model, the submersible fan assembly is arranged in the cooling tank and the aeration assembly is arranged in the flocculation and sedimentation tank, and cooling water in the cooling tank has a cooling effect on the submersible fan assembly, so that the service life of the equipment is prolonged; and meanwhile, the submersible fan assembly is arranged in the cooling water, noise generated by the submersible fan assembly can be reduced, the underwater operation sound of the submersible fan assembly is refracted into water at the interface of air and water, the noise is low, the investment of noise reduction facilities does not need to be additionally increased, and the effect of reducing the equipment cost is achieved.

Description

Technical Field

[0001] The utility model relates to the field of pollution prevention and control, in particular to a flocculation and sedimentation device used in a laboratory pollution prevention and control system. Background Art

[0002] Laboratory comprehensive wastewater treatment equipment uses different treatment technologies and processes for comprehensive treatment of organic, inorganic and biological wastewater components and concentrations generated by different laboratories, which can effectively remove COD, BOD, SS, chroma, viruses, organic solvents and heavy metal ions in laboratory comprehensive wastewater.

[0003] Sources of laboratory wastewater: comprehensive wastewater generated during laboratory medicines, reagents, test solutions, waste liquids, residual reagents, container washing, instrument cleaning, leakage, etc.

[0004] At present, land-based mechanical agitators are often used in pollution prevention and control devices for treating laboratory wastewater to stir the wastewater, and land-based blowers are used to provide air to the aeration components. However, the motors driving the mechanical agitators and the motors driving the blowers are both installed on land, which will generate noise pollution if used for a long time. Utility Model Content

[0005] The utility model provides a flocculation sedimentation device for a laboratory pollution prevention and control system, and its main purpose is to overcome the defect that when an aeration component is used and air is provided by a land-based blower, the land-based blower generates noise pollution.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A flocculation and sedimentation device for a laboratory pollution prevention and control system comprises at least one flocculation and sedimentation tank for accommodating wastewater generated by the laboratory, at least one cooling tank adjacent to the flocculation and sedimentation tank, at least one submersible fan assembly arranged in the cooling tank, at least one aeration assembly arranged in the flocculation and sedimentation tank, and cooling water arranged in the cooling tank to submerge the submersible fan assembly. The flocculation and sedimentation tank uses a flocculant to flocculate and precipitate the wastewater. The submersible fan assembly is used to provide air to the aeration assembly so that the aeration assembly generates bubbles in the flocculation and sedimentation tank.

[0008] Furthermore, the submersible fan assembly includes a submersible blower arranged below the liquid surface of the cooling water, at least one air inlet pipe arranged on one side of the submersible blower, at least one air outlet pipe arranged on the other side of the submersible blower, and at least one control valve arranged on the air outlet pipe, and the air outlet pipe extends into the flocculation sedimentation tank to provide air to the aeration assembly.

[0009] Furthermore, the submersible blower assembly also includes a shock-absorbing base arranged in the cooling pool for installing the submersible blower, at least one first silencer arranged on the air inlet pipe, at least one second silencer arranged on the air outlet pipe, and at least one inlet silencer arranged on the air inlet pipe, wherein the first silencer, the second silencer and the inlet silencer are all used to reduce noise.

[0010] Furthermore, the submersible fan assembly also includes at least one first shockproof joint and at least one second shockproof joint, one side of the first shockproof joint is arranged on the first silencer, and the other side of the first shockproof joint is arranged on the air intake pipe, one side of the second shockproof joint is arranged on the second silencer, and the other side of the second shockproof joint is arranged on the air intake pipe.

[0011] Furthermore, the submersible blower includes a first bearing unit on the shock-absorbing base, at least one active impeller arranged on the first bearing unit, at least one passive impeller arranged on one side of the active impeller, at least one fan casing arranged on the first bearing unit for accommodating the active impeller and the passive impeller, at least one second bearing unit on the top of the active impeller, at least one middle support seat arranged on the top of the second bearing unit, at least one motor unit arranged on the middle support seat and at least one coupling, one side of the coupling is connected to the output end of the motor unit, and the other side of the coupling is connected to the input end of the active impeller.

[0012] Furthermore, it also includes at least one mounting bracket arranged on one side wall of the flocculation sedimentation tank and at least one flow promoter arranged on the mounting bracket, and the flow promoter promotes the flow of wastewater so that the wastewater flows toward the other side wall of the flocculation sedimentation tank.

[0013] Furthermore, the flow promoter includes a casing mounted on the mounting bracket, a submersible motor unit disposed in the casing, and at least one blade disposed on the front end of the casing and driven to rotate by the submersible motor unit, wherein the blade is disposed toward the other side wall of the flocculation sedimentation tank.

[0014] Furthermore, the aeration assembly includes at least one aeration pipe arranged in the flocculation sedimentation tank, a plurality of saddles arranged on the air pipe, and a plurality of aeration plates arranged on the saddles and connected to the air pipe, and the aeration pipe is connected to the air outlet pipe.

[0015] Furthermore, the aeration plate includes an air inlet portion connected to the aeration pipe, a support body arranged on the air inlet portion, at least one aeration sheet covered on the support body, at least one shell for fixedly installing the support body and the aeration sheet, and a first mounting groove arranged on the inner side of the shell, the aeration sheet includes a bottom layer made of EPDM rubber and a covering layer covering the bottom layer and at least one clamping groove arranged on the outer peripheral edge of the bottom layer, the outer peripheral edge of the bottom layer is embedded in the first mounting groove, and the outer peripheral edge of the covering layer is embedded in the clamping groove, so that the outer peripheral edge of the covering layer is clamped between the shell and the bottom layer.

[0016] Compared with the prior art, the beneficial effects produced by the utility model are:

[0017] 1. The utility model has a simple structure and strong practicality. By arranging a submersible fan assembly in a cooling pool and an aeration assembly in a flocculation sedimentation tank, on the one hand, the cooling water in the cooling pool cools the submersible fan assembly, thereby extending the service life of the equipment. At the same time, arranging the submersible fan assembly in the cooling water can reduce the noise generated by the submersible fan assembly. The sound of the submersible fan assembly running underwater is refracted into the water at the interface between air and water, with low noise. There is no need to increase the investment in noise reduction facilities, thus saving the investment cost of other noise reduction equipment and having the effect of reducing equipment cost. On the other hand, an aeration assembly is arranged in the flocculation sedimentation tank to generate bubbles. The bubbles act as air flotation carriers and float up together with the flocculated dirt. A large number of flocs float up rapidly under the carrying of the bubbles, thereby achieving the purpose of purifying water quality and realizing the effect of solid-liquid or liquid-liquid separation.

[0018] 2. In the present invention, a submersible fan assembly is arranged in the cooling pool, which occupies a small area. Compared with the use of land-based fans, there is no need to build a fan room, which has the effect of reducing equipment costs.

[0019] 3. In the present invention, by providing the first anti-vibration joint, the vibration generated by the submersible blower is reduced from being transmitted to the air intake pipe.

[0020] 4. In the present invention, by providing the second shockproof joint, the vibration generated by the submersible blower is reduced from being transmitted to the exhaust pipe.

[0021] 5. In the present invention, a flow pusher is provided and a submersible motor unit is used to push the flow of the wastewater to achieve a stirring effect. Meanwhile, the submersible motor unit is provided in the wastewater to produce less noise.

[0022] 6. In the utility model, an aeration component is provided to generate bubbles in the flocculation sedimentation tank, and highly dispersed tiny bubbles are used as carriers to adhere to the pollutants in the wastewater, so that their buoyancy is greater than gravity and floating resistance, thereby causing the pollutants to float to the water surface to form foam, and then a scraping device is used to scrape the foam from the water surface to achieve a solid-liquid or liquid-liquid separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is the flow diagram of the flow pusher in the flocculation sedimentation tank, where the arrow indicates the flow direction of the wastewater.

[0025] Figure 3 It is a schematic diagram of the structure of the submersible fan assembly.

[0026] Figure 4 It is a structural schematic diagram of the active impeller and the passive impeller.

[0027] Figure 5 It is a structural schematic diagram of the flow promoter installed on the mounting bracket.

[0028] Figure 6 This is a schematic diagram of the structure of the flow pusher.

[0029] Figure 7 A schematic diagram of the structure of the aeration component.

[0030] Figure 8 It is a structural diagram of embodiment 2.

[0031] Fig. 9 This is a schematic diagram of the pollution prevention system. Implementation

[0032] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0033] Embodiment 1, refer to Figure 1 and Figure 2 A flocculation sedimentation device for a laboratory pollution prevention and control system includes at least one flocculation sedimentation tank 30 for accommodating wastewater 31 generated by the laboratory, at least one cooling tank 32 adjacent to the flocculation sedimentation tank 30, at least one submersible fan assembly 35 arranged in the cooling tank 32, at least one aeration assembly 36 arranged in the flocculation sedimentation tank 30, cooling water 34 arranged in the cooling tank 32 for submerging the submersible fan assembly 35, at least one mounting bracket 121 arranged on a side wall of the flocculation sedimentation tank 30, and at least one flow promoter 120 arranged on the mounting bracket.

[0034] Reference Figure 1The flocculation sedimentation tank 30 uses a flocculant to cause the wastewater 31 to flocculate and settle, and the submersible fan assembly 35 is used to provide air to the aeration assembly 36 so that the aeration assembly 36 generates bubbles in the flocculation sedimentation tank 30 .

[0035] Reference Figure 1 By setting a submersible fan assembly 35 in the cooling tank 32 and an aeration assembly 36 in the flocculation sedimentation tank 30, on the one hand, the cooling water 34 in the cooling tank 32 has a cooling effect on the submersible fan assembly 35, thereby extending the service life of the equipment. At the same time, the submersible fan assembly 35 is arranged in the cooling water 34 to reduce the noise generated by the submersible fan assembly 35, saving the investment cost of other noise reduction equipment and reducing the cost. On the other hand, an aeration assembly 36 is arranged in the flocculation sedimentation tank 30 to generate bubbles. The bubbles act as air flotation carriers and float up together with the flocculated dirt. A large number of flocs float up rapidly under the carrying of the bubbles, thereby achieving the purpose of purifying the water quality and realizing the effect of solid-liquid or liquid-liquid separation.

[0036] Reference Figure 1 By setting the submersible fan assembly 35 in the cooling pool 32, a small footprint is occupied. Compared with the use of land-based fans, no fan room needs to be built, which has the effect of reducing equipment costs.

[0037] Reference Figure 1 By setting up a submersible fan assembly 35 in the cooling pool 32, the sound of the submersible fan assembly 35 running underwater is refracted into the water at the interface between air and water, with low noise. There is no need to increase the investment in additional noise reduction facilities, which has the effect of reducing equipment costs.

[0038] Reference Figure 1 and Figure 3 The submersible fan assembly 35 includes a submersible blower 36 disposed below the liquid surface of the cooling water 34, at least one air inlet pipe 38 disposed on one side of the submersible blower 36, at least one air outlet pipe 42 disposed on the other side of the submersible blower 36, at least one control valve 40 disposed on the air outlet pipe 42, a shock-absorbing base 43 disposed in the cooling pool 32 for mounting the submersible blower 36, at least one first silencer 37 disposed on the air inlet pipe 38, at least one second silencer 41 disposed on the air outlet pipe 42, at least one inlet silencer 39 disposed on the air inlet pipe 38, at least one first shock-proof joint 43 and at least one second shock-proof joint 44.

[0039] Reference Figure 3 One side of the first shockproof joint 43 is arranged on the first muffler 37, and the other side of the first shockproof joint 43 is arranged on the intake pipe 38. One side of the second shockproof joint 44 is arranged on the second muffler 41, and the other side of the second shockproof joint 44 is arranged on the intake pipe 38.

[0040] Reference Figure 1The air outlet pipe 42 extends into the flocculation sedimentation tank 30 to provide air to the aeration assembly 36 .

[0041] Reference Figure 1 and Figure 3 The first silencer 37, the second silencer 41 and the inlet silencer 39 are all used to reduce noise.

[0042] Reference Figure 1 and Figure 3 By setting the first shockproof joint 43, the vibration generated by the submersible blower 36 is reduced and transmitted to the intake pipe 38.

[0043] Reference Figure 1 and Figure 3 By providing the second shockproof joint 44 , the vibration generated by the submersible blower 36 is reduced from being transmitted to the air outlet pipe 42 .

[0044] Reference Figure 1 , Figure 3 and Figure 4 The submersible blower 36 includes a first bearing unit 53 on a shock-absorbing base 43, at least one active impeller 51 arranged on the first bearing unit 53, at least one passive impeller 52 arranged on one side of the active impeller 51, at least one fan housing 55 arranged on the first bearing unit 53 for accommodating the active impeller 51 and the passive impeller 52, at least one second bearing unit 54 on the top of the active impeller 51, at least one middle support seat 56 arranged on the top of the second bearing unit 54, at least one motor unit 57 arranged on the middle support seat 56, and at least one coupling, one side of the coupling is connected to the output end of the motor unit 57, and the other side of the coupling is connected to the input end of the active impeller 51. By setting the coupling, the transmission efficiency is improved, the failure rate of the active impeller 51 during rotation is reduced, and the stability of the fan assembly during use is improved.

[0045] Reference Figure 1 , Figure 3 and Figure 4 The first bearing unit 53 includes an upper bearing seat provided on the upper part of the fan housing 55, two first ball bearings provided in the upper bearing seat, and two second ball bearings respectively sleeved on the upper part of the active impeller 51 and the upper part of the passive impeller 52.

[0046] Reference Figure 1 , Figure 3 and Figure 4 The second bearing unit 54 includes a lower bearing seat provided on the upper part of a fan housing 55, and two second ball bearings provided in the lower bearing seat. The two second ball bearings are respectively mounted on the lower part of the active impeller 51 and the lower part of the passive impeller 52.

[0047] Reference Figure 1 , Figure 3 and Figure 4 By setting the first bearing unit 53 and the second bearing unit 54, when the active impeller 51 and the passive impeller 52 rotate, the first bearing unit 53 and the second bearing unit 54 respectively support and limit the two sides of the active impeller 51 and the passive impeller 52, thereby greatly improving the stability of the active impeller 51 and the passive impeller 52 during high-speed rotation, reducing the jitter of some positions on both sides of the active impeller 51 and the passive impeller 52 during rotation, thereby effectively reducing the wear of the active impeller 51 and the passive impeller 52 during use, increasing the service life of the active impeller 51 and the passive impeller 52, and playing a good role in fixing and limiting the active impeller 51 and the passive impeller 52.

[0048] Reference Figure 2 The flow promoter 120 pushes the wastewater so that the wastewater flows toward the other side wall of the flocculation sedimentation tank 30 .

[0049] Reference Figure 5 and Figure 6 The flow promoter 120 includes a housing 114 mounted on a mounting bracket, a submersible motor unit 123 disposed in the housing 114, and at least one blade 119 disposed on the front end of the housing 114 and driven to rotate by the submersible motor unit 123, wherein the blade 119 is disposed toward the other side wall of the flocculation sedimentation tank.

[0050] Reference Figure 5 and Figure 6 The motor unit includes an outer layer 113 arranged in a casing 114, a motor body 122 arranged in the outer layer 113, a rear bearing seat 112 arranged on the rear of the motor body 122, a front bearing seat 116 arranged on the front of the motor body 122, a watertight joint 111 arranged on the rear of the casing 114 for installing a cable, a machine seal seat 117 arranged on the front of the front bearing seat 116, and a mechanical seal 118 arranged on the machine seal seat 117. The main shaft of the motor body 122 passes through the front bearing seat 116, the machine seal seat 117 and the mechanical seal 118 units respectively and is connected to the blade 119.

[0051] Reference Figure 5 and Figure 6 By setting up the flow pusher 120, a submersible motor unit 123 is used to push the wastewater to achieve a stirring effect. At the same time, the submersible motor unit 123 is set in the wastewater to produce less noise.

[0052] Reference Figure 1 and Figure 7 The aeration assembly 36 includes at least one aeration pipe 61 disposed in the flocculation sedimentation tank 30 , a plurality of saddles 62 disposed on the air pipe, and a plurality of aeration plates 63 disposed on the saddles 62 and connected to the air pipe. The aeration pipe 61 is connected to the air outlet pipe 42 .

[0053] Reference Figure 7 The aeration plate 63 includes an air inlet portion 65 connected to the aeration pipe 61, a support body 66 arranged on the air inlet portion 65, at least one aeration sheet 69 covering the support body 66, at least one shell 72 for fixing the support body 66 and the aeration sheet 69, and a first mounting groove 70 arranged on the inner side of the shell 72.

[0054] Reference Figure 7 The aeration sheet 69 includes a bottom layer 67 made of EPDM rubber, a covering layer 68 covering the bottom layer 67, and at least one clamping groove 71 provided on the outer periphery of the bottom layer 67. The outer periphery of the bottom layer 67 is embedded in the first mounting groove 70, and the outer periphery of the covering layer 68 is embedded in the clamping groove 71, so that the outer periphery of the covering layer 68 is clamped between the shell 72 and the bottom layer 67. The covering layer 68 is a synthetic rubber composed of PTFE polytetrafluoroethylene and VITON fluororubber.

[0055] Example 2, refer to Figure 8 and Fig. 9 The difference between the second embodiment and the first embodiment is that the pollution prevention and control system is used to treat wastewater generated in the laboratory, and the pollution prevention and control system also includes at least one regulating tank 81 for adjusting the pH value of the wastewater, at least one micro-electrolysis cell 82 connected to the regulating tank 81, at least one lifting pump 85 for transporting the wastewater in the regulating tank 81 to the micro-electrolysis cell 82, at least one columnar activated carbon high-pressure reverse osmosis filter 83 for filtering the wastewater, and at least one ozone disinfector 84 for disinfecting the wastewater. The flocculation sedimentation tank 30 is connected to the micro-electrolysis cell 82 through a second lifting pump 86.

[0056] Reference Figure 8 and Fig. 9 The micro-electrolysis cell 82 includes at least one micro-electrolysis cell body 85, at least one iron-carbon filler 86 disposed in the micro-electrolysis cell body 85, at least one positive electrode 87 disposed in the micro-electrolysis cell body 85, at least one negative electrode 88 disposed in the micro-electrolysis cell body 85, and at least one second aeration component 90 for aerating the micro-electrolysis cell body 85. The second aeration component 90 is a tubular aerator. The positive electrode 87 and the negative electrode 88 are both used to energize the iron-carbon filler 86, so that a plurality of fine primary cells are formed between the particles of the iron-carbon filler 86, so that the wastewater is converted into flocculated waste. The second aeration component 90 is used to increase the number of bubbles in the micro-electrolysis cell body 85 as a carrier of the flocculated waste.

[0057] Reference Figure 8 and Fig. 9, by setting positive and negative electrodes 88 to energize the iron-carbon filler 86 to form a primary cell, and by using the potential difference between the particles of the iron-carbon filler 86, a plurality of micro primary cells are formed. These micro cells use the iron with low potential as the cathode and the carbon with high potential as the anode to produce an electrochemical reaction in an aqueous solution containing an acidic electrolyte. As a result of the reaction, the iron is corroded and becomes a divalent iron ion that enters the solution. The pH value of the outlet water of the internal micro-electrolysis cell body 85 is adjusted to about 9. Due to the reaction of iron ions and hydroxide, ferrous hydroxide with a coagulation effect is formed. It attracts the particles with weak negative charges in the pollutants to form a relatively stable flocculent, also called iron mud, thereby removing pollutants in the wastewater.

[0058] Soluble anode (Fe) materials are used to generate a large number of Fe and Fe cations, and Fe(OH) and Fe(OH)3 precipitates are generated through flocculation to remove pollutants in the water. At the same time, a large number of H2 microbubbles are generated on the cathode and a large number of O2 microbubbles are generated on the anode. These bubbles are used as flotation carriers to float up together with the flocculated pollutants. A large number of flocs float up quickly under the rich microbubbles, achieving the purpose of purifying water quality.

[0059] Reference Figure 8 and Fig. 9 By setting up a second aeration component 90 to generate bubbles in the micro-electrolysis cell body 85, highly dispersed tiny bubbles are used as carriers to adhere to pollutants in the wastewater, making their buoyancy greater than gravity and floating resistance, so that the pollutants float to the water surface to form foam, and then scraping equipment is used to scrape the foam from the water surface to achieve a solid-liquid or liquid-liquid separation process.

[0060] The necessary conditions for the flotation process are: a large number of tiny bubbles should be distributed in the wastewater to be treated, and the pollutants to be treated should be suspended, and the surface of the suspended particles should be hydrophobic, so that they can easily adhere to the bubbles and float up.

[0061] Reference Figure 8 and Fig. 9 In this embodiment, a pH adjustment tank 81 is used. Since the pH values ​​of the reagents used and the wastewater produced at different time periods cannot be determined, a fully automatic acid-base adjustment device is used to add acid and alkali to the wastewater to adjust the pH of the wastewater to neutral.

[0062] Reference Figure 8 and Fig. 9, using a micro-electrolysis cell 82, using multiple tiny primary cells formed between iron-carbon electrodes to oxidize iron to produce ferrous coagulant, which has a removal effect on metal ions and other particles with weak negative charges. Using a flocculation sedimentation tank 30, adding polyaluminium chloride (PAC) and polyacrylamide (PAM) to the sedimentation tank through a dosing device, the suspended particles in the water or liquid are aggregated and enlarged, or form flocs, thereby accelerating the coagulation of particles and achieving solid-liquid separation.

[0063] Reference Figure 8 and Fig. 9 Through the aeration component 36, the flocculation sedimentation tank 30 and the micro-electrolysis cell 82, a biochemical processor is formed to biochemically treat the wastewater.

[0064] Reference Figure 8 and Fig. 9 The columnar activated carbon high pressure reverse osmosis filter 83 includes sand filtration and carbon filtration, which deeply treats the wastewater through filtration and adsorption, further reducing the wastewater pollution concentration and turbidity degree.

[0065] Reference Figure 8 and Fig. 9 The wastewater is disinfected by the ozone disinfector 84, and the wastewater is deeply treated by the strong oxidation effect of ozone to kill the residual bacteria in the wastewater, so that the effluent meets the discharge standard.

[0066] Reference Figure 8 and Fig. 9 In this embodiment, the specific process flow is as follows: the laboratory wastewater is collected and sent to the regulating tank 81 for acid-base neutralization, and the pH value is neutralized to between 6.5 and 7.5 by adding liquid alkali or liquid acid, and then lifted by the lifting pump 85 to the micro-electrolytic cell 82. The micro-electrolytic cell 82 is filled with iron-carbon filler 863 and air is introduced. After the wastewater stays in the micro-electrolytic cell 82 for hours, it is sent to the flocculation sedimentation tank 30, and polyaluminum chloride (PAC) and polyacrylamide (PAM) are added by an automatic dosing device, and aeration and stirring are used to fully flocculate and precipitate. At the same time, the micro-electrolytic cell 82 and the sedimentation tank and the aeration device constitute anaerobic and aerobic tanks for biochemical treatment, so that the wastewater can be deeply biochemically treated. The wastewater treated in the flocculation sedimentation tank 30 passes through the columnar activated carbon high-pressure reverse osmosis filter 83 to adsorb solid suspended matter and part of organic matter in the water. The treated wastewater is then highly efficiently oxidized by ozone to better remove organic, inorganic and heavy metals. The final supernatant enters the clear water tank for broad-spectrum sterilization and disinfection.

[0067] Reference Figure 8 and Fig. 9 In this embodiment, the regulating tank 81, the micro-electrolysis cell 82, the flocculation sedimentation tank 30, the columnar activated carbon high-pressure reverse osmosis filter 83 and the ozone disinfector 84 are connected in sequence.

[0068] Ozone enhanced oxidation principle: Ozone can fade most organic pigments. It can slowly corrode rubber and cork, and oxidize organic unsaturated compounds. It is commonly used in: disinfection and sterilization of beverages, air purification, bleaching, water treatment and drinking water disinfection, killing mold and insect eggs in granaries; reacting with organic unsaturated substances can generate ozonides, which can be decomposed in the presence of water, and the original unsaturated bonds are opened to generate aldehydes, ketones and carboxylic acids. Since ozone decomposition is produced, it can be used as a means of synthesis and determination of the structure of organic matter. Ozone has extremely strong oxidizing and bactericidal properties. It is one of the strongest oxidants in nature. Its redox potential in water is second only to fluorine. The filter material of the multi-media reverse osmosis filter is mainly activated carbon, which can play a good adsorption and carbonization role and has a good effect on reducing COD.

[0069] The principle of adhesion between suspended particles and bubbles: Whether suspended particles in water can adhere to bubbles depends mainly on the properties of the particle surface. If the particle surface is easily wetted by water, the particle is hydrophilic; if it is not easily wetted by water, it is hydrophobic. Hydrophilicity and hydrophobicity can be judged by the size of the contact angle formed when the gas, liquid and solid phases are in contact. When the gas, liquid and solid phases are in contact, the angle between the solid-liquid interfacial tension line and the gas-liquid interfacial tension line is represented by θ. The three phases of water, gas and solid particles are represented by 3 types respectively. If θ<90° is a hydrophilic particle, it is not easy for bubbles to adhere; θ>90° is a hydrophobic particle, which is easy for bubbles to adhere. When the gas, liquid and solid phases are in contact, the three interfacial tensions are always balanced. The wetting contact angle (θ) of particles in water changes with the surface tension (σ,) of water. Increasing the surface tension (σ,) of water can increase the contact angle, which is conducive to the combination of gas and particles. On the contrary, a firmly combined gas and particle floating body is formed.

[0070] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0071] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A flocculation sedimentation device for a laboratory pollution prevention and control system, characterized in that: The invention comprises at least one flocculation sedimentation tank for accommodating wastewater generated by the laboratory, at least one cooling tank adjacent to the flocculation sedimentation tank, at least one submersible fan assembly arranged in the cooling tank, at least one aeration assembly arranged in the flocculation sedimentation tank, and cooling water arranged in the cooling tank for submerging the submersible fan assembly. The flocculation sedimentation tank uses a flocculant to cause the wastewater to flocculate and precipitate. The submersible fan assembly is used to provide air to the aeration assembly so that the aeration assembly generates bubbles in the flocculation sedimentation tank.

2. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 1, characterized in that: The submersible fan assembly includes a submersible blower arranged below the liquid surface of the cooling water, at least one air inlet pipe arranged on one side of the submersible blower, at least one air outlet pipe arranged on the other side of the submersible blower, and at least one control valve arranged on the air outlet pipe. The air outlet pipe extends into the flocculation sedimentation tank to provide air to the aeration assembly.

3. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 2, characterized in that: The submersible fan assembly also includes a shock-absorbing base arranged in the cooling pool for installing the submersible blower, at least one first silencer arranged on the air inlet pipe, at least one second silencer arranged on the air outlet pipe, and at least one inlet silencer arranged on the air inlet pipe. The first silencer, the second silencer and the inlet silencer are all used to reduce noise.

4. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 3, characterized in that: The submersible fan assembly also includes at least one first shockproof joint and at least one second shockproof joint, one side of the first shockproof joint is arranged on the first silencer, and the other side of the first shockproof joint is arranged on the air intake pipe, one side of the second shockproof joint is arranged on the second silencer, and the other side of the second shockproof joint is arranged on the air intake pipe.

5. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 3, characterized in that: The submersible blower includes a first bearing unit on the shock-absorbing base, at least one active impeller arranged on the first bearing unit, at least one passive impeller arranged on one side of the active impeller, at least one fan casing arranged on the first bearing unit for accommodating the active impeller and the passive impeller, at least one second bearing unit on the top of the active impeller, at least one middle support seat arranged on the top of the second bearing unit, at least one motor unit arranged on the middle support seat and at least one coupling, one side of the coupling is connected to the output end of the motor unit, and the other side of the coupling is connected to the input end of the active impeller.

6. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 1, characterized in that: It also includes at least one mounting bracket arranged on one side wall of the flocculation sedimentation tank and at least one flow promoter arranged on the mounting bracket, and the flow promoter promotes the flow of wastewater so that the wastewater flows toward the other side wall of the flocculation sedimentation tank.

7. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 6, characterized in that: The flow promoter includes a casing mounted on the mounting bracket, a submersible motor unit disposed in the casing, and at least one blade disposed on the front end of the casing and driven to rotate by the submersible motor unit, wherein the blade is disposed toward the other side wall of the flocculation sedimentation tank.

8. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 2, characterized in that: The aeration assembly comprises at least one aeration pipe arranged in the flocculation sedimentation tank, a plurality of saddles arranged on the air pipe, and a plurality of aeration plates arranged on the saddles and connected to the air pipe. The aeration pipe is connected to the air outlet pipe.

9. A flocculation sedimentation device for a laboratory pollution prevention and control system as claimed in claim 8, characterized in that: The aeration plate includes an air inlet portion connected to the aeration pipe, a support body arranged on the air inlet portion, at least one aeration sheet covered on the support body, at least one shell for fixedly installing the support body and the aeration sheet, and a first mounting groove arranged on the inner side of the shell, the aeration sheet includes a bottom layer made of EPDM rubber, a covering layer covering the bottom layer, and at least one clamping groove arranged on the outer peripheral edge of the bottom layer, the outer peripheral edge of the bottom layer is embedded in the first mounting groove, and the outer peripheral edge of the covering layer is embedded in the clamping groove, so that the outer peripheral edge of the covering layer is clamped between the shell and the bottom layer.

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