CN219860891U - Oily wastewater treatment system - Google Patents
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- CN219860891U CN219860891U CN202320449577.5U CN202320449577U CN219860891U CN 219860891 U CN219860891 U CN 219860891U CN 202320449577 U CN202320449577 U CN 202320449577U CN 219860891 U CN219860891 U CN 219860891U
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 41
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 104
- 239000002351 wastewater Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000005345 coagulation Methods 0.000 claims abstract description 20
- 230000015271 coagulation Effects 0.000 claims abstract description 20
- 238000005188 flotation Methods 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 239000000701 coagulant Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 38
- 239000012528 membrane Substances 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 25
- 239000000919 ceramic Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 10
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 4
- 235000009566 rice Nutrition 0.000 abstract description 4
- 230000001112 coagulating effect Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 abstract 1
- 230000016615 flocculation Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- 238000002791 soaking Methods 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model discloses an oily wastewater treatment system, which comprises a coagulation device, a coagulation device and a flocculation device, wherein the coagulation device is used for adding a coagulant into oily wastewater to be treated and then outputting flocculated oily wastewater; the nanometer air floatation device is used for introducing the flocculated oily wastewater into an air floatation tank for air floatation impurity removal treatment, so that the wastewater is primarily separated from oil, and nanometer air floatation wastewater is output; and the ultrafiltration device is used for carrying out ultrafiltration treatment on the nano air-float wastewater and outputting ultrafiltration water. The coagulating device is firstly added with the coagulant into the oily wastewater to be treated, then flocculated oily wastewater is output, the air flotation impurity removal treatment is carried out through the rice air flotation device, finally the nano air flotation wastewater is subjected to ultrafiltration treatment through the ultrafiltration device, ultrafiltration water is output, the oil wastewater concentration and ultrafiltration treatment are realized, the oily wastewater treatment method is simple, the treatment is thorough, secondary pollution is not caused, the process floor area is reduced, and the treatment efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of oily wastewater treatment, in particular to an oily wastewater treatment system.
Background
The source of the oily wastewater is wide, and the oily wastewater is mainly from industrial wastewater of petrochemical industry, chemical industry, metallurgical industry, mechanical processing industry, food processing industry and other manufacturing industries, etc. Generally, the oil content in the oil-containing wastewater is divided into four types, namely, dissolved oil, emulsified oil, dispersed oil and floating oil according to the form of the oil content in water and the size of the particle size of the oil content. The oil droplets of the floating oil have larger particle sizes, generally larger than 150um, and are easy to float on the water surface to form an oil film or an oil layer. The particle size of the oil droplets of the dispersed oil is between 20 and 150um, and the oil droplets are difficult to coalesce by adopting a conventional sedimentation method. The particle size of the dissolved oil drops is even smaller than a few nanometers, and the oil and the water form a uniform and stable system which is difficult to remove by adopting a physical method. Different from common domestic sewage, the oily wastewater has high pollutant concentration and complex components, is toxic and harmful, and causes serious harm to ecological environment and human survival health.
In order to solve the problem that the oily wastewater pollutes water resources, the current industrial treatment technology of the oily wastewater at home and abroad comprises a physical and chemical method, a chemical method and a biological method. Most of the traditional processes have low efficiency in removing wastewater. For example, adsorption, coagulation and the like, the method has a good removal effect on macromolecular organic matters, the removal rate is about 30%, and certain solid hazardous waste can be generated in the adsorption process, so that the treatment cost is increased; the removal effect of the partial advanced oxidation process is slightly higher, such as Fenton oxidation and ozone oxidation, but the removal efficiency is generally not higher than 60 percent.
In recent years, the treatment of oily wastewater by a membrane separation technology can effectively solve the pollution to water resources, but the problems of water resource pollution and water resource recycling are rarely solved by the membrane separation technology at the same time.
Disclosure of Invention
The utility model aims to provide an oily wastewater treatment system, which maximizes the effect of removing oil content in wastewater, solves the problems of oil removal and recycling of oily wastewater, has small occupied area and high treatment efficiency, and can realize water resource recycling.
In order to solve the above technical problems, an embodiment of the present utility model provides an oily wastewater treatment system, including:
the coagulation device is used for adding a coagulant into the oily wastewater to be treated and then outputting flocculated oily wastewater;
the nanometer air floatation device is used for introducing the flocculated oily wastewater into an air floatation tank for air floatation impurity removal treatment, so that the wastewater is primarily separated from oil, and nanometer air floatation wastewater is output;
and the ultrafiltration device is used for carrying out ultrafiltration treatment on the nano air-float wastewater and outputting ultrafiltration water.
The device also comprises a second nano air floatation device connected with the ultrafiltration device, and the second nano air floatation device is used for carrying out secondary air floatation impurity removal on the ultrafiltration water.
Wherein the ultrafiltration device is a ceramic ultrafiltration device, an organic ultrafiltration device or an inorganic ultrafiltration device.
Wherein the ultrafiltration device is a tubular ultrafiltration device, a plate ultrafiltration device or a roll ultrafiltration device.
The ultrafiltration device is characterized by further comprising a cleaning device connected with the ultrafiltration device and used for cleaning a separation membrane of the ultrafiltration device.
The device also comprises an oil concentration detection device connected with at least one of the ultrafiltration device and the second nano air floatation device.
The system further comprises a threshold detection device and a control valve, wherein the threshold detection device is used for detecting the oil concentration of the ultrafiltration device, the second nano air floatation device and the oil concentration detection device, and the control valve is used for outputting purified water after the oil concentration detected by the threshold detection device is lower than a threshold.
The device also comprises a metering pump connected with the coagulation device and used for detecting the flow of the oily wastewater to be treated entering the coagulation device.
The device also comprises a display connected with the threshold detection device and the metering pump.
The metering pump comprises a threshold detection device and a communication module connected with the metering pump.
Compared with the prior art, the oily wastewater treatment system provided by the embodiment of the utility model has the following advantages:
according to the oily wastewater treatment system, coagulant is added into oily wastewater to be treated by the coagulation device, flocculated oily wastewater is output, air floatation impurity removal treatment is carried out by the rice air floatation device, ultrafiltration treatment is carried out on nano air floatation wastewater by the ultrafiltration device, ultrafiltration water is output, oil wastewater concentration and ultrafiltration treatment are realized, the oily wastewater treatment method is simple, the treatment is thorough, secondary pollution is not caused, the process floor area is reduced, and the treatment efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an oily wastewater treatment system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a connection structure of an embodiment of an oily wastewater treatment system according to an embodiment of the present utility model;
wherein, 1-reinjection water raw water tank, 2-reinjection water pump, 3-pipeline mixer, 4-air supporting pond, 5-pneumatic diaphragm pump, 6-air supporting water tank, 7-centrifugal pump, 8-ultrafiltration raw water tank, 9-ultrafiltration water inlet pump, 10-tubular ceramic ultrafiltration device, 11-ultrafiltration water tank, 12-air compressor, 13-automatic discharge valve 14-measuring pump.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of an oily wastewater treatment system according to an embodiment of the present utility model; fig. 2 is a schematic diagram of a connection structure of an embodiment of an oily wastewater treatment system according to an embodiment of the present utility model.
In one embodiment, the oily wastewater treatment system comprises:
the coagulation device 100 is used for adding a coagulant into the oily wastewater to be treated and then outputting flocculated oily wastewater;
the nanometer air floatation device 200 is used for introducing the flocculated oily wastewater into an air floatation tank for air floatation impurity removal treatment, so that the wastewater is primarily separated from oil, and nanometer air floatation wastewater is output;
and the ultrafiltration device 300 is used for carrying out ultrafiltration treatment on the nano air-float wastewater and outputting ultrafiltration water.
The coagulating device 100 is added with a coagulant into oily wastewater to be treated, flocculated oily wastewater is output, the air flotation impurity removal treatment is carried out through the rice air flotation device, the nano air flotation wastewater is subjected to ultrafiltration treatment through the ultrafiltration device 300, ultrafiltration water is output, oil wastewater concentration and ultrafiltration treatment are realized, the oily wastewater treatment method is simple, the treatment is thorough, secondary pollution is not caused, the process floor area is reduced, and the treatment efficiency is improved.
Since the desired needs may not be met after the first impurity removal and ultrafiltration process, in one embodiment, the oily wastewater treatment system further comprises a second nano-flotation device 200 coupled to the ultrafiltration device 300 for performing a second air flotation impurity removal of the ultrafiltration water.
The second nano air floatation device 200 is used for carrying out secondary air floatation impurity removal on the ultrafiltration water, and is connected with the ultrafiltration device 300 to realize secondary ultrafiltration treatment, so that the concentration recovery efficiency is further improved.
It should be noted that the number of times of treatment of the same batch of oily wastewater by the ultrafiltration device 300 is not limited in the present utility model, and the number of times of concentration may be preset or controlled according to other conditions.
The type of the filtering membrane of the ultrafiltration device 300 is not limited in the present utility model, and the ultrafiltration device 300 is a ceramic ultrafiltration device, an organic ultrafiltration device, an inorganic ultrafiltration device, or other types of ultrafiltration devices.
The shape type of the ultrafiltration device 300 is not limited in the present utility model, and the ultrafiltration device 300 is a tubular ultrafiltration device, a plate ultrafiltration device, a roll ultrafiltration device, or other shapes.
In one embodiment, tubular ceramic ultrafiltration is the core step in the process, and has the advantages of high membrane flux, strong pollution resistance, long service life and good economy.
Since damage to the filtration membrane is necessarily caused during operation of the system of the present utility model, and the subsequent filtration efficiency is reduced, in one embodiment of the present utility model, the oily wastewater treatment system further comprises a cleaning device connected to the ultrafiltration device 300, for cleaning the separation membrane of the ultrafiltration device 300.
The separation membrane of the ultrafiltration apparatus 300 may be cleaned by a cleaning apparatus, such as a periodic cleaning or an irregular cleaning, such as an irregular cleaning, according to the throughput. The utility model is not limited to the cleaning mode and the cleaning process, and the cleaning can be physical cleaning, namely chemical cleaning or a combination of physical and chemical cleaning.
In one embodiment, the cleaning device comprises maintenance cleaning and recovery cleaning, wherein the maintenance chemical cleaning is to convey 1-5% alkali liquor and 500-2000ppm chemical cleaning agent solution into a membrane tank through a dosing pump, standing for 3h, and evacuating the cleaned membrane tank solution; and then 2% citric acid solution is pumped into the membrane tank through a dosing pump, and the membrane tank is kept stand for 3 hours, and the solution in the membrane tank after cleaning is emptied.
The restorative chemical cleaning comprises pumping 1-5% alkali solution and 500-1000ppm chemical cleaning machine solution into membrane tank, standing overnight, and evacuating the cleaned membrane tank solution
In order to obtain the treatment result of the oily wastewater in real time, the management efficiency is improved, and the problem that the treatment is unqualified due to insufficient concentration times or the treatment efficiency is reduced due to excessive concentration times is avoided.
In one embodiment, the oily wastewater treatment system further comprises an oily concentration detection device coupled to at least one of the ultrafiltration device 300, the second nano-flotation device 200.
It should be noted that the detection mode, structure, etc. of the oil concentration detection device are not limited in the present utility model, and the detection may be performed according to other properties such as light transmittance.
By detecting the oil content, feedback can be obtained on the state of the equipment, such as continuous twice treatment on the same batch of wastewater, if the oil content is reduced to the expected value, the equipment is normal, if the oil content is unchanged, the equipment is fault, if the ultrafiltration device 300 is damaged, and the like, the cleaning operation can be performed through the cleaning device, so that the maintenance efficiency of the equipment is improved.
To further improve the control efficiency and implement the automatic treatment, in one embodiment, the oily wastewater treatment system further includes a threshold detection device and a control valve, wherein the threshold detection device is detected by the ultrafiltration device 300, the second nano air floatation device 200 and the oily concentration detection device, and the control valve is used for outputting purified water after the oily concentration detected by the threshold detection device is lower than a threshold.
And outputting purified water after the oil concentration detected by the threshold detection device is lower than a threshold value through the threshold detection device and the control valve, so as to realize the automatic treatment of the oil-containing wastewater.
In order to further improve the management efficiency in the present utility model, in one embodiment, the oily wastewater treatment system further comprises a metering pump connected to the coagulation device 100 for detecting the flow rate of the oily wastewater to be treated entering the coagulation device 100.
The flow rate of the oily wastewater to be treated entering the coagulation device 100 is detected by a metering pump, and then the operation of the equipment can be obtained in real time by the output of treatment, and the treatment capacity of the oily wastewater each time can be controlled.
Still further, in an embodiment, the oily wastewater treatment system further comprises a display coupled to the threshold detection device, the metering pump.
The display of the equipment parameters is realized through the display, so that the management efficiency is improved.
To further increase the efficiency of automated treatment and remote control, in one embodiment, the oily wastewater treatment system includes a communication module coupled to the threshold detection device, the metering pump.
The utility model is not limited to the type of communication module, including but not limited to a 4G module, a wifi module, and a 5G module.
In one embodiment, the oily wastewater treatment system comprises a concentration subsystem and a cleaning subsystem, wherein the concentration subsystem is mainly used for concentrating oily wastewater.
And (3) coagulation: reinjection water of the thickened oil combined station enters a raw water tank, enters a primary oil removal system through a booster pump, and is added with coagulant into oily wastewater and stirred uniformly;
nano air floatation: introducing the flocculated oily wastewater into an air floatation tank for air floatation to remove impurities, so that the wastewater is primarily separated from oil;
ceramic ultrafiltration: and pumping the produced water treated by the air floatation tank into ceramic ultrafiltration for ultrafiltration treatment, almost removing residual oil content of the produced water, and enabling the concentrated water to enter an air floatation water tank again for circulating concentration treatment, wherein the produced water is used as a water recycling system.
The back cleaning subsystem mainly cleans the separation membrane, opens the air compressor, and enables the cleaning to reversely pass through the ultrafiltration membrane through the control valve to finish the air cleaning of the ultrafiltration membrane.
The maintenance chemical cleaning is that 1-5% alkali liquor and 500-2000ppm chemical cleaning agent solution are pumped into a membrane tank through a dosing pump, and the membrane tank solution is left for 3 hours after cleaning; and then 2% citric acid solution is pumped into the membrane tank through a dosing pump, and the membrane tank is kept stand for 3 hours, and the solution in the membrane tank after cleaning is emptied.
The restorative chemical cleaning is to pump 1-5% of liquid alkali and 500-1000ppm of chemical cleaning machine solution into the membrane tank through a dosing pump, and then to stand for overnight, and the cleaned membrane tank solution is emptied.
In one embodiment, the oily wastewater treatment system stores and outputs the oily wastewater through a reinjection raw water tank 1, then a coagulant is added through a pipeline mixer 3 through a reinjection water pump 2, and then the flocculated oily wastewater is output to an air floatation tank 4, metering is carried out by a metering pump 14 in the process of passing through the pipeline mixer 3 through the reinjection water pump 2, the primary particulate matter impurity removal is carried out through a pneumatic diaphragm pump 5 in the air floatation tank 4, the primary particulate matter impurity removal treatment is carried out on the wastewater to an air floatation water tank 6, the wastewater is subjected to primary separation of oil, the wastewater is pumped to an ultrafiltration raw water tank 8 through a centrifugal pump 7, and finally the wastewater of the ultrafiltration raw water tank 8 is passed through an ultrafiltration water inlet pump 9, after passing through a tubular ceramic ultrafiltration device 30011, if the wastewater is qualified, the wastewater is output to the ultrafiltration water tank 11, otherwise the wastewater is output to the air floatation tank 4 for secondary circulation concentration, and when cleaning is required, the tubular ceramic ultrafiltration device 30011 is opened, and an air compressor 12 and an automatic exhaust valve 13 are controlled to be cleaned.
Specific case 1:
adding 20ppm PAC into the reinjection water with the oil content of 10mg/L, uniformly mixing, then entering an air floatation tank for coagulation and air floatation treatment, removing emulsified oil, floating oil and suspended matters in the wastewater, wherein the oil content of the water is 3.6mg/L, and the water after the air floatation treatment enters a ceramic ultrafiltration membrane component for ultrafiltration treatment through a pipeline, so that almost all the oil and suspended matters in the water body after the treatment are removed, and the oil content is 0mg/L.
Maintenance-once chemical cleaning was performed every 5 days, and the quality of the water was shut down as shown in Table I below. The maintenance chemical cleaning comprises the steps of feeding 500ppm of chemical agent solution and 0.3% alkali liquor into a membrane tank through a dosing pump, soaking overnight, and evacuating the cleaned solution; after ceramic ultrafiltration treatment is carried out for five days, the running state of the whole device is stable, and the high oil removal rate is still maintained, which indicates that the coagulation and air floatation treatment effectively controls the formation of membrane pollution.
Specific case 2:
adding 20ppm PAC into the oily wastewater with the oil content of 80mg/L, uniformly mixing, then, entering an air floatation tank for coagulation and air floatation treatment, removing emulsified oil, floating oil and suspended matters in the wastewater, wherein the oil content of water is 10.6mg/L, and the water after the air floatation treatment enters a ceramic ultrafiltration membrane component for ultrafiltration treatment through a pipeline, wherein almost all the oil and suspended matters in the water body after the treatment are removed, and the oil content is 0.4mg/L.
The oily wastewater treatment system uses the ultrafiltration device 300, so that the process floor area is reduced, and the treatment efficiency is improved; according to the oily wastewater concentration device, concentration of different multiples can be controlled, pollution discharge is carried out when the oil content of the circulating water tank reaches 800ppm, and further, the concentration and recovery of oil in the oily wastewater are carried out, so that the purification treatment of the oily wastewater is realized; according to the oily wastewater treatment system, the back cleaning system can clean the ultrafiltration membrane, so that the service life of the membrane is prolonged, and the membrane flux is maintained.
In summary, in the oily wastewater treatment system provided by the embodiment of the utility model, the coagulant is added into the oily wastewater to be treated by the coagulation device, the flocculated oily wastewater is output, the air flotation impurity removal treatment is performed by the rice air flotation device, the nano air flotation wastewater is subjected to ultrafiltration treatment by the ultrafiltration device, and the ultrafiltration water is output, so that the oily wastewater concentration and ultrafiltration treatment are realized, the oily wastewater treatment method is simple, the treatment is thorough, the secondary pollution is not caused, the process floor area is reduced, and the treatment efficiency is improved.
The oily wastewater treatment system provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (10)
1. An oily wastewater treatment system, comprising:
the coagulation device is used for adding a coagulant into the oily wastewater to be treated and then outputting flocculated oily wastewater;
the nanometer air floatation device is used for introducing the flocculated oily wastewater into an air floatation tank for air floatation impurity removal treatment, so that the wastewater is primarily separated from oil, and nanometer air floatation wastewater is output;
and the ultrafiltration device is used for carrying out ultrafiltration treatment on the nano air-float wastewater and outputting ultrafiltration water.
2. The oily wastewater treatment system of claim 1, further comprising a second nano-flotation device coupled to the ultrafiltration device for secondary air flotation contaminant removal of the ultrafiltration water.
3. The oily wastewater treatment system of claim 2, wherein the ultrafiltration device is a ceramic ultrafiltration device, an organic ultrafiltration device, or an inorganic ultrafiltration device.
4. An oily wastewater treatment system according to claim 3, wherein the ultrafiltration device is a tubular ultrafiltration device, a plate ultrafiltration device or a roll ultrafiltration device.
5. The oily wastewater treatment system of claim 4, further comprising a cleaning device coupled to the ultrafiltration device for cleaning a separation membrane of the ultrafiltration device.
6. The oily wastewater treatment system of claim 5, further comprising an oily concentration detection device coupled to at least one of the ultrafiltration device and the second nano-flotation device.
7. The oily wastewater treatment system of claim 6, further comprising threshold detection means for detecting with the ultrafiltration means, the second nano-flotation means, the oily concentration detection means, and a control valve for outputting purified water after the oily concentration detected by the threshold detection means is below a threshold.
8. The oily wastewater treatment system of claim 7, further comprising a metering pump coupled to the coagulation device for detecting the flow of the oily wastewater to be treated into the coagulation device.
9. The oily wastewater treatment system of claim 8, further comprising a display coupled to the threshold detection device and the metering pump.
10. The oily wastewater treatment system of claim 9, comprising a communication module coupled to the threshold detection device and the metering pump.
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| CN202320449577.5U CN219860891U (en) | 2023-03-06 | 2023-03-06 | Oily wastewater treatment system |
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| CN202320449577.5U CN219860891U (en) | 2023-03-06 | 2023-03-06 | Oily wastewater treatment system |
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| CN219860891U true CN219860891U (en) | 2023-10-20 |
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