CN222613121U - Oily sewage treatment system - Google Patents
Oily sewage treatment system Download PDFInfo
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- CN222613121U CN222613121U CN202420735052.2U CN202420735052U CN222613121U CN 222613121 U CN222613121 U CN 222613121U CN 202420735052 U CN202420735052 U CN 202420735052U CN 222613121 U CN222613121 U CN 222613121U
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- 239000010865 sewage Substances 0.000 title claims abstract description 102
- 238000005189 flocculation Methods 0.000 claims abstract description 61
- 230000016615 flocculation Effects 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 239000006260 foam Substances 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 37
- 239000001257 hydrogen Substances 0.000 abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005188 flotation Methods 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000012535 impurity Substances 0.000 description 11
- 238000007667 floating Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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Abstract
本实用新型涉及一种含油污水处理系统，属于污水处理技术领域。本实用新型的污水处理系统包括在含油污水流动方向上依次设置的含油污水存储装置、电絮凝反应装置和沉降装置，所述电絮凝反应装置的顶部设置有用于对电絮凝反应装置密封并聚集气浮泡沫的集气罩，所述集气罩上设置有气浮泡沫出口；所述含油污水处理系统还包括与所述气浮泡沫出口连接的气液分离装置和用于存储气液分离装置分离所得气体的储气装置。该含油污水处理系统可以能防止氢气逸出在含油污水处理系统周围聚集发生爆炸，提高含油污水电絮凝处理的安全性，并且还有助于油和氢气的回收利用，节约能源。
The utility model relates to an oily sewage treatment system, which belongs to the technical field of sewage treatment. The sewage treatment system of the utility model includes an oily sewage storage device, an electric flocculation reaction device and a sedimentation device which are sequentially arranged in the flow direction of the oily sewage. The top of the electric flocculation reaction device is provided with a gas collecting hood for sealing the electric flocculation reaction device and collecting flotation foam, and the gas collecting hood is provided with a flotation foam outlet; the oily sewage treatment system also includes a gas-liquid separation device connected to the flotation foam outlet and a gas storage device for storing the gas separated by the gas-liquid separation device. The oily sewage treatment system can prevent hydrogen from escaping and gathering around the oily sewage treatment system to cause explosion, thereby improving the safety of the electric flocculation treatment of oily sewage, and also contributing to the recycling of oil and hydrogen, saving energy.
Description
Technical Field
The utility model relates to an oily sewage treatment system, and belongs to the technical field of sewage treatment.
Background
At present, most of the oil fields in China step into a tertiary oil recovery stage, and tertiary produced water has the characteristics of high temperature, hypersalinity, multiple bacteria, multiple residual chemical agents and the like, and meanwhile, polymers such as common polyacrylamide are needed to be added into a well in the tertiary oil recovery process, so that the problems of high viscosity, strong emulsification, strong solid particle agglomeration capability, large movement resistance of oil drops and solid particles, large consumption of chemical adsorbents and the like of the tertiary produced water are caused. At present, common methods in the oil-containing sewage treatment technology comprise a physical method, a chemical method and a biological method, but the methods have the defects of high energy consumption, high cost, complex equipment, difficult maintenance and the like. Therefore, the treatment of oily sewage requires the research and development of new technology with high efficiency, energy saving, economy and safety.
The electric flocculation is a high-efficiency and clean sewage treatment technology, the reaction principle of the electric flocculation uses metals such as aluminum, iron and the like as anodes, the anodes are eroded under the action of direct current to generate a large amount of metal cations such as Al, fe and the like, and the metal cations are hydrolyzed to generate hydroxide and polynuclear hydroxyl complex with strong adsorption effect, so that colloidal impurities and suspended impurities in the wastewater are coagulated and precipitated for separation. At the same time, the charged contaminant particles swim in the electric field, and part of the charges are neutralized by the electrodes to promote destabilization and settlement. When the wastewater is subjected to electrolytic flocculation treatment, colloidal impurities and suspended impurities are coagulated and precipitated, and various pollutants in the water can be removed due to the oxidization of the anode and the reduction of the cathode. As a high-efficiency and clean sewage treatment technology, the electric flocculation method combines the advantages of a chemical flocculation method and an electrochemical method for sewage treatment, thoroughly removes pollutants, and can remove inorganic pollutants and organic pollutants which are difficult to degrade and cannot be treated by a common method, so that the electric flocculation method is also commonly used for treating oily sewage containing polymer.
In the prior art, the Chinese patent application with the application publication number of CN111115923A and the application publication date of 2020, 05 and 08 discloses an oily sewage treatment system based on an electric flocculation technology, which comprises a sewage tank for containing oily sewage, wherein the sewage tank is connected with the lower part of an electric flocculation device through a liquid inlet pipe, the upper part of the electric flocculation device is connected with the lower part of a settling tank through a liquid discharge pipe, the upper part of the settling tank is provided with a liquid outlet pipe, the flocculation device comprises a reaction tank, a plurality of electrode plates which are arranged at intervals are arranged in the reaction tank, the plurality of electrode plates are fixedly connected together through a non-conductive connecting piece, the distance between two adjacent electrode plates is 1.8cm, and the electrode plates are electrically connected with a direct current power supply. When the system is used for treating oily sewage, the oily sewage is led into an electric flocculation device from a sewage tank for electrolysis, oil-water separation is carried out on the oily sewage in the electrolysis process, the oily sewage is separated into standard-reaching water, floccules and air flotation foam, the air flotation foam and a part of floccules are left in a reaction tank, the standard-reaching water and the other part of floccules flow into a settling tank through a liquid discharge pipe, and the floccules discharge the standard-reaching water to the outside through a liquid outlet pipe after settling in the settling tank. The system has reasonable design of the electrode plate spacing, is favorable for accelerating the sedimentation movement of the floccules and the floating movement of bubbles, and can be connected together through the connecting piece, thereby simplifying the replacement operation of the power connection device and the electrode plate and improving the working efficiency. However, the air-float foam in the reaction tank is mainly formed by the fact that pollutants such as hydrogen and emulsion oil generated in the electrolysis process of the oily sewage float upwards to the water surface, the opening of the reaction tank is communicated with the atmosphere, the air-float foam is continuously gathered and broken along with the situation that the air-float foam stays in the reaction tank, the hydrogen is continuously gathered around the reaction tank, and the oily sewage treatment system has higher safety risk because the hydrogen is easy to burn or explode after gathering to a certain concentration.
Disclosure of utility model
The utility model aims to provide an oily sewage treatment system so as to solve the problem of low safety of the conventional oily sewage treatment device based on the electric flocculation technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The oily sewage treatment system comprises an oily sewage storage device, an electric flocculation reaction device and a sedimentation device which are sequentially arranged in the flowing direction of the oily sewage, wherein a gas collecting hood for sealing the electric flocculation reaction device and collecting air-float foam is arranged at the top of the electric flocculation reaction device, an air-float foam outlet is arranged on the gas collecting hood, and the oily sewage treatment system further comprises a gas-liquid separation device connected with the air-float foam outlet and a gas storage device for storing gas obtained by separation of the gas-liquid separation device.
Further, the gas collecting hood is cone-shaped, and the air-float foam outlet is arranged at the top end of the gas collecting hood.
Further, a gas collecting hood for sealing the sedimentation device and collecting air-float foam is arranged at the top of the sedimentation device, an air-float foam outlet is arranged on the gas collecting hood of the sedimentation device, and the air-float foam outlet on the sedimentation device is connected with the air-liquid separation device.
Further, the gas collecting hood of the sedimentation device is cone-shaped, and the air flotation foam outlet is arranged at the top end of the gas collecting hood.
Further, the oily sewage treatment system further comprises an oil storage device, an oil outlet is arranged on the oily sewage storage device, and the oil outlet on the oily sewage storage device and a liquid outlet on the gas-liquid separation device are connected with the oil storage device.
Further, the top of the oily sewage storage device is provided with a cone-shaped oil collecting cover for sealing the oily sewage storage device and collecting an oil layer, and an oil outlet of the oily sewage storage device is arranged at the top of the oil collecting cover.
Further, the electrode assembly of the electric flocculation reaction device comprises two spiral electrode plates which are arranged at intervals, the two spiral electrode plates are provided with the same spiral shaft, and the spiral shaft extends along the upper and lower directions of the electric flocculation reaction device.
Further, a stirring mechanism for stirring sewage flowing through the electrode assembly in the electric flocculation reaction process is arranged in the electric flocculation reaction device in a matched mode, and the stirring mechanism is arranged below the electrode assembly.
Further, a water outlet of the electric flocculation reaction device is arranged below the stirring mechanism.
Further, the electric flocculation reaction device is provided with an alternating current pulse power supply in a matching way.
The oily sewage treatment system improves the prior art, the gas-liquid separation device is arranged to separate the gas-floating foam and the hydrogen generated in the electric flocculation reaction device into oil and hydrogen respectively, and then the hydrogen is collected, so that the hydrogen can be prevented from escaping and gathering around the oily sewage treatment system to explode, the safety of the electric flocculation treatment of the oily sewage is improved, the recycling of the oil and the hydrogen is facilitated, and the energy is saved.
Drawings
FIG. 1 is a schematic diagram of an oily wastewater treatment system of example 1;
FIG. 2 is a schematic view of an electrode assembly in the electric flocculation reaction apparatus in example 1;
The device comprises a 1-oily sewage storage device, a 101-sewage inlet, a 102-first valve, a 103-booster pump, a 104-second valve, a 105-liquid level window, a 106-third valve, a 107-fourth valve, a 108-fifth valve, a 2-electroflocculation reaction device, a 201-liquid level window, a 202-sixth valve, a 203-seventh valve, a 204-eighth valve, a 205-detachable sealing door, a 206-ninth valve, a 207-electrode assembly, a 3-sedimentation device, a 301-liquid level window, a 302-tenth valve, a 303-detachable sealing door, a 304-eleventh valve, a 305-twelfth valve, a 306-booster pump, a 307-thirteenth valve, a 308-outlet pipeline, a 4-gas storage tank, a 401-fourteenth valve, a 402-fifteenth valve, a 403-compressor, a 5-gas-liquid separation device, a 501-booster pump, a 502-liquid level window, a 503-sixteenth valve, a 504-seventeenth valve, a 505-eighteenth valve, a 506-ninth valve, a 6-oil storage tank, a 601-twentieth valve, a 7-twentieth valve and a 7-twenty-first distribution box.
Detailed Description
The technical scheme of the utility model is further described below in connection with the specific embodiments.
Example 1
The oily sewage treatment system of this embodiment, as shown in fig. 1, includes oily sewage storage device 1, electric flocculation reaction device 2, sedimentation device 3, gas-liquid separation device 5, gas storage device 4, oil storage device 6 and with the supporting alternating current pulse power of electric flocculation reaction device 2, alternating current pulse power's negative and positive pole alternate conversion can eliminate direct current flocculation and easily passivate, inefficiency, the drawback that the energy consumption is high, and purifying effect is good, and processing cost is low, and alternating current pulse power sets up in block terminal 7.
The oily sewage storage device 1 comprises a cylinder body with a circular cross section, a conical cylinder-shaped oil collecting cover which is arranged vertically and connected to the upper end of the cylinder body in a sealing manner, and a conical cylinder-shaped sewage collecting part which is arranged at the lower end of the cylinder body, wherein an oil outlet is arranged at the top of the oil collecting cover, a sludge outlet is arranged at the bottom of the sewage collecting part, an oily sewage inlet and a water outlet are arranged on the cylinder body, the oily sewage inlet is positioned above the water outlet, a third valve (one-way valve) 106 is arranged on the oil outlet of the oily sewage storage device 1 in a matched manner, a fourth valve (water outlet valve) 107 is arranged on the water outlet, a fifth valve (blow-down valve) 108 is arranged on the sludge outlet, the oily sewage inlet is connected with a water inlet pipe 101, and the water inlet pipe is sequentially provided with a first valve 102, a booster pump 103 and a second valve (sewage inlet valve) 104 in the water flowing direction. The cylinder body of the oily sewage storage device 1 is also provided with a liquid level window 105.
The electric flocculation reaction device 2 comprises a shell, an electrode assembly 207 and a stirring mechanism 208, wherein the electrode assembly 207 and the stirring mechanism 208 are arranged in the shell, the shell comprises a cylinder body with a circular cross section, a conical cylinder-shaped gas collecting cover which is connected to the upper end of the cylinder body in a sealing way, and a conical cylinder-shaped dirt collecting part which is arranged at the lower end of the cylinder body, an air floatation foam outlet is arranged at the top of the gas collecting cover, a drain outlet is arranged at the bottom of the dirt collecting part, a water inlet and a water outlet are arranged on the cylinder body, the water inlet is arranged above the electrode assembly 207, the water outlet is arranged below the stirring mechanism 208, the air floatation foam outlet of the electric flocculation reaction device 2 is provided with a ninth valve (one-way valve) 206 in a matching way, the water inlet of the electric flocculation reaction device 2 is connected with the water outlet of the oily water storage device 1, the water outlet of the electric flocculation reaction device 2 is provided with a seventh valve (one-way valve) 203, the drain outlet of the electric flocculation reaction device 2 is provided with an eighth valve (drain valve) 204, and the cylinder body of the shell of the electric flocculation reaction device 2 is also provided with a liquid level window 201 and a detachable sealing door 205;
The electrode assembly 207 of the electric flocculation reaction apparatus 2 is shown in fig. 2, and comprises two spiral electrode plates 810 arranged at intervals, wherein the two spiral electrode plates are provided with the same spiral shaft extending along the up-down direction of the electric flocculation reaction apparatus 2, one spiral electrode plate is rotated 180 degrees around the spiral shaft and then is completely overlapped with the other spiral electrode, and the cross section and the thickness of each electrode plate 810 are consistent. One electrode plate is connected with a live wire of an alternating current pulse power supply, the other electrode plate is connected with a zero line of the alternating current pulse power supply, and compared with the traditional planar electrode plate, the electric flocculation reaction device of the electrode assembly reduces the occupied area under the condition of the electrode plates with the same area, thereby increasing the polar water ratio, reducing the current density, further reducing the overvoltage, improving the voltage efficiency, increasing the volume of sewage flowing through per unit time, improving the treatment efficiency and saving the energy consumption. The spiral electrode plate 810 is made of aluminum material, and the outer shell of the electric flocculation reaction device 2 is made of PVC material.
The stirring mechanism 208 is arranged below the electrode assembly 207, the stirring mechanism 208 is started in the electric flocculation process, so that the flow of water between the electrode plates can be enhanced, a dead water area is eliminated, electric flocculation is enabled to be more sufficient, flocs are crushed and recombined, flocs are accelerated to settle, the separation efficiency is improved, and the water outlet can be prevented from being blocked.
The shell of the sedimentation device 3 comprises a cylinder body with a circular cross section, a conical cylindrical gas collecting hood which is connected to the upper end of the cylinder body in a sealing manner, and a conical cylindrical dirt collecting part which is arranged at the lower end of the cylinder body, wherein an air-float foam outlet is arranged at the top of the gas collecting hood of the sedimentation device 3, a drain outlet is arranged at the bottom of the dirt collecting part, a water inlet and a water outlet are arranged on the cylinder body, a tenth valve (one-way valve) 302 is arranged on the air-float foam outlet of the sedimentation device 3 in a matching manner, the water inlet of the sedimentation device 3 is connected with the water outlet of the electric flocculation reaction device 2, an eleventh valve (drain valve) 304 is arranged on the drain outlet of the sedimentation device 3 in a matching manner, the water outlet of the sedimentation device 3 is connected with a water outlet pipeline 308, a twelfth valve 305, a booster pump 306 and a thirteenth valve 307 are arranged on the water outlet pipeline 308, the twelfth valve 305 is positioned on the upstream of the booster pump 306, the thirteenth valve 307 is positioned on the downstream of the booster pump 306, and a liquid level window 303 and a detachable sealing door are also arranged on the cylinder body of the shell of the sedimentation device 3.
The gas-liquid separation device 5 is specifically a gas-liquid separation tank, the gas-liquid separation device 5 is provided with a gas-floating foam inlet, a gas outlet, a liquid outlet and a drain outlet, the gas-floating foam inlet of the gas-liquid separation device 5 is connected with the gas-floating foam outlet of the electroflocculation reaction device 2 and the gas-floating foam outlet of the sedimentation device 3, the gas-floating foam inlet is provided with a sixth valve (one-way valve) 202 in a matching way, the gas outlet of the gas-liquid separation device 5 is provided with a sixteenth valve (outlet valve) 503 in a matching way, the drain outlet of the gas-liquid separation device 5 is provided with a seventeenth valve (drain valve) 504 in a matching way, and the gas-liquid separation device 5 is also provided with a liquid level window 502.
The gas storage device 4 is specifically a gas storage tank, the gas storage tank is provided with a gas inlet, a gas outlet and a liquid outlet, the gas inlet of the gas storage device 4 is connected with a gas outlet of the gas-liquid separation device 5 through a pipeline, a compressor 403 is arranged on the connecting pipeline, the liquid outlet of the gas storage device 4 is provided with a fourteenth valve 401 in a matching way, and the gas outlet of the gas storage device 4 is provided with a fifteenth valve (exhaust valve) 402 in a matching way.
The oil storage device 6 is specifically an oil storage tank, a first liquid inlet, a second liquid inlet and a liquid outlet are arranged on the oil storage tank, and the first liquid inlet of the oil storage device 6 is connected with an oil outlet of the oily sewage storage device 1. The second liquid inlet of the oil storage device 6 is connected with the liquid outlet of the gas-liquid separation device 5 through a pipeline, a booster pump 501, an eighteenth valve 505 and a nineteenth valve 506 are arranged on the connecting pipeline, the eighteenth valve 505 is arranged on the upstream of the booster pump 501, the nineteenth valve 506 is arranged on the downstream of the booster pump 501, a twentieth valve 601 is arranged on the liquid outlet of the oil storage device 6 in a matched mode, and a twenty first valve (pressure release valve) 602 is also arranged on the oil storage device 6.
In the oily sewage treatment system adopting the embodiment, in the treatment process of oily sewage, the one-way valve 106 and the pressure release valve 602 are firstly opened, then the second valve 104, the first valve 102 and the booster pump 103 are opened to inject oily sewage into the oily sewage storage device 1, after the oily sewage enters the oily sewage storage device 1, a part of solid impurities and suspended matters are primarily settled at the bottom of the oily sewage storage device 1 and separated from sewage, and because the density difference between oil and water and the mutual indissolvable property exist, the oily sewage is subjected to oil-water separation in the settling process of the solid impurities and the suspended matters to form an oil layer and a water layer (the oil layer is above and the water layer is below) respectively, and sludge in the oily sewage is settled below the water layer in the oil-water separation process. When oil in the oil reservoir starts to enter the oil reservoir 6, the fifth valve (blow-down valve) 108, the fourth valve 107, the ninth valve (check valve) 206, and the sixth valve (check valve) 202, and the stirring mechanism of the electric flocculation reaction apparatus 2 are opened.
The oily sewage entering the electric flocculation reaction device 2 from the oily sewage storage device 1 is subjected to the electrolysis of the electrode assembly, impurities form a floccule state, hydrogen generated by the reaction floats upwards with pollutants such as emulsion oil in water to form air flotation foam, residual oil dirt floats upwards to form floating oil to be mixed into the air flotation foam, and part of floccule state impurities formed by electric flocculation are settled in the electric flocculation reaction device.
As the electric flocculation reaction proceeds, the air-float foam and the oil-float start to enter the air-liquid separation device 5 through the air-float foam outlet of the electric flocculation reaction device 2, then the eighth valve (blow-off valve) 204, the seventh valve (one-way valve) 203, the tenth valve (one-way valve) 302, the compressor 402, the nineteenth valve 506, the eighteenth valve 505 and the adding pump 501 are opened, most of the floc impurities generated by the electric flocculation reaction enter the sedimentation device 3 along with the sewage to be sedimented, so as to realize further separation of the floc impurities and the clean water, while the hydrogen and the oil dirt remained in the sewage float up to form a mixture of the air-float foam and the oil-float in the floc impurities sedimentation process, and when the mixture of the air-float foam and the oil-float in the sedimentation device 3 starts to enter the air-liquid separation device 5 through the tenth valve (one-way valve) 302, the thirteenth valve 307, the twelfth valve 305, the booster pump 306 and the eleventh valve (blow-off valve) 304 are opened.
The air-float foam and the oil-float entering the air-liquid separation device 5 are subjected to air-liquid separation, the separated liquid enters the oil storage tank 6 through a pipeline through an eighteenth valve 505, a booster pump 501 and a nineteenth valve 506, and the separated gas enters the gas storage tank 4 through a pipeline through a sixteenth valve 503 and a compressor 403. The recovered oil is discharged and conveyed through a pipeline through a twenty-fifth valve 601, the recovered gas is discharged and conveyed through a pipeline through a fifteenth valve 402, the settled sludge is treated or reinjected through a pipeline through a blow-down valve fifth valve 108, an eighth valve 204, an eleventh valve 304 and a seventeenth valve 504, and the water remained in the hydrogen is condensed in the gas storage device and then discharged through a fourteenth valve 401.
The liquid level change in the corresponding device is respectively observed through a liquid level window 105 arranged on the oily sewage storage device 1, a liquid level window 201 arranged on the electric flocculation reaction device 2, a liquid level window 301 arranged on the sedimentation device 3 and a liquid level window 502 arranged on the gas-liquid separation device 5.
Example 2
The oily sewage treatment system of the present embodiment differs from the oily sewage electroflocculation reaction device of embodiment 1 only in that the stirring mechanism 208 is not provided in the electroflocculation reaction device 2 employed in the present embodiment, so that the volume of the electroflocculation reaction device can be reduced.
Example 3
The oily sewage treatment system of the embodiment is different from the oily sewage electroflocculation reaction device of the embodiment 1 only in that the top of the barrel body of the oily sewage storage device is open, and an overflow port is arranged at the edge, and the first liquid inlet of the oily sewage storage device is connected with the overflow port of the oily sewage storage device. In the treatment process of the oily sewage, an upper oil-floating layer in the oily sewage storage device can enter the oil storage device through the overflow port.
Claims (10)
1. The oily sewage treatment system comprises an oily sewage storage device, an electric flocculation reaction device and a sedimentation device which are sequentially arranged in the flowing direction of the oily sewage, and is characterized in that the top of the electric flocculation reaction device is provided with a gas collecting hood which is used for sealing the electric flocculation reaction device and collecting air-float foam, the gas collecting hood is provided with an air-float foam outlet, and the oily sewage treatment system also comprises a gas-liquid separation device connected with the air-float foam outlet and a gas storage device which is used for storing gas obtained by the separation of the gas-liquid separation device.
2. The oily sewage treatment system according to claim 1, wherein the gas collecting hood is cone-shaped, and the air-float foam outlet is arranged at the top end of the gas collecting hood.
3. The oily sewage treatment system according to claim 1, wherein the top of the sedimentation device is provided with a gas-collecting hood for sealing the sedimentation device and collecting air-float foam, the gas-collecting hood of the sedimentation device is provided with an air-float foam outlet, and the air-float foam outlet on the sedimentation device is connected with the gas-liquid separation device.
4. The oily sewage treatment system according to claim 3, wherein the gas collecting hood of the sedimentation device is cone-shaped, and the air-float foam outlet is arranged at the top end of the gas collecting hood.
5. The system for treating oily sewage according to claim 1 or 2, wherein the system for treating oily sewage further comprises an oil storage device, an oil outlet is arranged on the oily sewage storage device, and the oil outlet on the oily sewage storage device and the liquid outlet on the gas-liquid separation device are both connected with the oil storage device.
6. The system of claim 5, wherein the oil-containing sewage storage device is provided with a cone-shaped oil collecting cover at the top for sealing the oil-containing sewage storage device and collecting oil layer, and the oil outlet of the oil-containing sewage storage device is arranged at the top of the oil collecting cover.
7. The oily sewage treatment system according to claim 1, wherein the electrode assembly of the electric flocculation reaction device comprises two spiral electrode plates arranged at intervals, the two spiral electrode plates are provided with the same spiral shaft, and the spiral shaft extends along the up-down direction of the electric flocculation reaction device.
8. The oily wastewater treatment system of claim 7, wherein: the electric flocculation reaction device is internally provided with a stirring mechanism which is used for stirring sewage flowing through the electrode assembly in the electric flocculation reaction process, and the stirring mechanism is arranged below the electrode assembly.
9. The system of claim 8, wherein the water outlet of the electric flocculation reaction device is arranged below the stirring mechanism.
10. The system for treating oily sewage according to claim 1 or 8, wherein the electric flocculation reaction device is provided with an alternating current pulse power supply in a matched manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420735052.2U CN222613121U (en) | 2024-04-10 | 2024-04-10 | Oily sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420735052.2U CN222613121U (en) | 2024-04-10 | 2024-04-10 | Oily sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222613121U true CN222613121U (en) | 2025-03-14 |
Family
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