CN217921768U - Precipitation oil removal device and descale oil wastewater treatment system - Google Patents

Abstract

The utility model relates to a waste water treatment technical field especially relates to deposit oil removal device and descale oily effluent disposal system to descale oily effluent disposal inefficiency among the solution prior art, the problem that is difficult to discharge to reach standard. The sedimentation oil separation device comprises an oil separation groove, at least one first baffle plate, at least one second baffle plate and first inclined tube filler. The oil separating groove is provided with a first inlet, a second outlet and a third outlet. One end of the first baffle plate is installed at the top of the oil separation tank, and the other end of the first baffle plate extends towards the bottom of the oil separation tank. One end of the second baffle plate is installed at the bottom of the oil separation groove, and the other end of the second baffle plate extends towards the top of the oil separation groove. A waste water flow channel is formed between the adjacent first baffle plates and the adjacent second baffle plates. The first baffle plates and the second baffle plates are used for blocking oil in the descaled wastewater, so that the oil floats on the water surface. The first inclined tube filler is arranged between the two adjacent first baffle plates and the second baffle plate, and the first inclined tube filler is arranged close to the second outlet. The application is used for wastewater treatment.

Description

Deposit oil removal device and descale oily effluent disposal system

Technical Field

The application relates to the technical field of wastewater treatment, in particular to a precipitation oil separation device and a descaling oil wastewater treatment system.

Background

The descaled oil wastewater is wastewater generated by cleaning an oil drum used for transporting crude oil. Crude oil can use a large amount of iron drums to store and transport in the transportation process, and the transportation back does not use for a long time, can form a certain amount of oily dirt at the inner wall of bucket, if not rinse, the dirt in the bucket drops, can influence the secondary and use, reduces the quality of oil.

The oil drum containing dirt is cleaned by heating clean water to 60-70 deg.C with a boiler and washing with high pressure water gun and detergent to dissolve the dirt and remove the dirt. The grease dirt after the cleaning is dissolved gradually under the action of hot water and a medicament to form the descaled grease waste water.

The descaled oily wastewater contains a large amount of oil stains, and can cause serious pollution to soil, vegetation and underground water on the earth surface when being randomly discharged. At the present stage, the main treatment mode of the wastewater is simple oil removal treatment, and the surface floating oil is separated to reduce the oil content in the water.

In the process of realizing the above treatment, at least the following problems exist: the treatment efficiency is low, and the standard emission is difficult to reach.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides deposit oil removal device and descale oily effluent disposal system for descale oily effluent disposal inefficiency among the solution prior art, the problem that is difficult to discharge to reach standard.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a sediment oil separation device, which includes an oil separation tank, at least one first baffle, at least one second baffle, and a first pipe chute filler. The oil separating groove is provided with a first inlet, a second outlet and a third outlet. The first inlet is used for receiving the descaled oil wastewater. The second outlet is used for discharging the wastewater subjected to the oil separation treatment. The third outlet is used for discharging floating oil. One end of the first baffle plate is installed at the top of the oil separation tank, and the other end of the first baffle plate extends towards the bottom of the oil separation tank. One end of the second baffle plate is installed at the bottom of the oil separation groove, and the other end of the second baffle plate extends towards the top of the oil separation groove. A waste water flow channel is formed between the adjacent first baffle plates and the adjacent second baffle plates. The first baffle plates and the second baffle plates are used for blocking oil in the descaled wastewater, so that the oil floats on the water surface. The first inclined tube filler is arranged between the two adjacent first baffle plates and the second baffle plate, and the first inclined tube filler is arranged close to the second outlet. The included angle between the conveying channel in the first inclined tube filler and the lower surface of the first inclined tube filler is 30-90 degrees. The oil separating groove comprises a first bottom plate and a second bottom plate which are arranged at the bottom, and the included angle between the first bottom plate and the second bottom plate is 120-180 degrees. The first bottom plate is located below the first inclined tube filler, and the second bottom plate is close to the second outlet. The first inclined tube filler is used for separating oil, mud and water from the wastewater subjected to the oil separation treatment.

The sediment oil removal device that this application embodiment provided. The waste water enters the oil separating groove through the first inlet. Through the arrangement of the first baffle plate and the second baffle plate. The wastewater flows in the wastewater flow channel, so that the flow path of the wastewater is increased, the oil floats on the water surface, and the treatment efficiency is improved. And further separating oil, mud and water from the wastewater by the first inclined tube filler.

Optionally, the settling oil removal device further comprises an overflow pipe. The overflow pipe is arranged in the oil separation groove and is communicated with the second outlet. The second bottom plate is located the overflow pipe below, and the overflow pipe is used for discharging the waste water after first pipe chute filler separation.

In a second aspect, the present application provides a descaled oil wastewater treatment system. The descaled oil wastewater treatment system comprises an oil removal regulation subsystem, an air flotation oil removal subsystem, a precipitation regulation subsystem, a biochemical treatment subsystem, a mud-water separation subsystem, a sludge dewatering subsystem and a filtering subsystem. The oil removal regulating subsystem is used for carrying out oil removal treatment on the descaled oil wastewater, and comprises a precipitation oil removal device. The air-flotation oil-removing subsystem is connected with the oil-separation regulating subsystem and is used for carrying out air-flotation oil removal on the wastewater discharged by the oil-separation regulating subsystem. The sedimentation adjusting subsystem is connected with the air floatation oil removal subsystem and is used for performing flocculation sedimentation on the wastewater discharged by the air floatation oil removal subsystem. The biochemical treatment subsystem is connected with the precipitation regulation subsystem and is used for treating organic matters and ammonia nitrogen in the wastewater discharged by the precipitation regulation subsystem. The mud-water separation subsystem is connected with the biochemical treatment subsystem and is used for carrying out mud-water separation on the wastewater discharged by the biochemical treatment subsystem. The sludge dewatering subsystem is connected with the mud-water separation subsystem and is used for dewatering sludge discharged by the mud-water separation subsystem. The filtering subsystem is connected with the sludge dewatering subsystem and is used for filtering the wastewater discharged by the sludge dewatering subsystem.

The application embodiment provides a descale oily effluent disposal system. When the descaled oil wastewater is treated, the descaled oil wastewater is subjected to oil removal treatment in the oil removal regulation subsystem to remove floating oil, and besides, silt in the wastewater is settled through gravity. And the wastewater treated in the oil removal regulation subsystem enters an air flotation oil removal subsystem for air flotation oil removal. And adding a medicament into the wastewater discharged from the air floatation oil removal subsystem in a precipitation regulation subsystem for flocculation precipitation, and discharging the treated wastewater into a biochemical treatment subsystem for treating organic matters and ammonia nitrogen in the wastewater through bacteria. And carrying out sludge-water separation on the wastewater discharged after the treatment of the biochemical treatment subsystem in a sludge-water separation subsystem. The separated wastewater is dehydrated in a sludge dehydration subsystem and filtered in a filtering subsystem. Finally, the descaled oil wastewater is treated into water reaching the standard. The descaling oil wastewater treatment system is high in efficiency, and treated water meets the standard discharge requirement.

Optionally, the oil removal regulation subsystem further comprises a floating oil collection device and a regulation pool. The floating oil collecting device comprises a floating oil collecting tank. The floating oil collecting tank is provided with a second inlet, the second inlet is used for receiving floating oil discharged from a third outlet, and the third outlet is connected with the second inlet.

The regulating reservoir comprises a regulating tank, a detecting meter and a heater. The adjusting tank is provided with a third inlet and a fourth outlet, the third inlet is used for receiving the waste water discharged from the second outlet, the third inlet is connected with the second outlet, and the fourth outlet is used for discharging the adjusted waste water. The detection meter is arranged in the adjusting tank and is used for monitoring the pH value and the liquid level of the wastewater in real time. The heater is arranged in the regulating tank and used for heating the wastewater.

Optionally, the air-flotation oil removing subsystem comprises a pH adjusting chamber, a mixer, a chemical chamber, a stirrer, an air-flotation reaction chamber, a bubble generator, a scum board, a scum chamber, and a storage chamber. The pH adjusting chamber is provided with a fourth inlet for receiving wastewater discharged from a fourth outlet, and the fourth inlet is connected with the fourth outlet. The mixer is arranged in the pH adjusting cavity and is used for stirring and mixing the wastewater discharged from the fourth inlet with acid or alkali. The reagent cavity is communicated with the pH adjusting cavity and is used for mixing the wastewater discharged from the pH adjusting cavity with the reagent to perform demulsification and precipitation. The stirrer is arranged in the medicament cavity and is used for stirring and mixing the wastewater and the medicament. The air floatation reaction cavity is communicated with the reagent cavity and is used for treating oil drops and suspended matters in the wastewater discharged from the reagent cavity. The bubble generator is arranged in the pH adjusting cavity. The port of the bubble generator is used for generating dissolved air bubbles, and the port of the bubble generator is positioned in the air floatation reaction cavity. The scum board is arranged in the air floatation reaction cavity and is used for scraping scum in the wastewater. The scum cavity is used for receiving scum discharged from the air flotation reaction cavity. The storage cavity is used for receiving the wastewater discharged from the air floatation reaction cavity. The storage chamber has a fifth outlet for discharging waste water.

Optionally, the precipitation regulation subsystem comprises a regulation cavity, a stirrer, a precipitation cavity, a second inclined tube filler and a reaction cavity. The adjusting cavity is provided with an adjusting cavity inlet, the adjusting cavity inlet is used for receiving the wastewater discharged by the fifth outlet, and the adjusting cavity inlet is connected with the fifth outlet. The stirrer is arranged in the adjusting cavity and used for mixing the wastewater in the adjusting cavity with the medicament. The sedimentation cavity is communicated with the adjusting cavity. The second pipe chute filler is arranged in the sedimentation cavity and used for carrying out mud and water separation on the wastewater discharged into the sedimentation cavity from the regulation cavity. The reaction cavity is used for receiving the wastewater treated by the second inclined tube filler, and is provided with a sixth outlet which is used for discharging the regulated wastewater in the reaction cavity.

Optionally, the biochemical treatment subsystem comprises an anoxic tank, a submersible water impeller, anoxic tank filler, an aerobic tank and an aeration pipe. The anoxic pond is used for receiving the waste water discharged by the sixth outlet. The submersible water impeller is arranged at the bottom of the anoxic tank and used for pushing and stirring the wastewater. The anoxic tank is filled with materials and is arranged in the anoxic tank. The aerobic tank is communicated with the anoxic tank. The aeration pipe is arranged at the bottom of the aerobic tank and is used for aerating the wastewater in the aerobic tank.

Optionally, the mud-water separation subsystem comprises a mud scraper tank and a mud scraper. The mud scraping tank is provided with a seventh outlet, an eighth outlet and a sixth inlet. The sixth inlet is used for receiving the wastewater discharged by the aerobic tank. And the seventh outlet is used for discharging the wastewater after the sludge scraping treatment. The eighth outlet is used for discharging sludge. The mud scraper is arranged in the mud scraping tank and is used for separating mud and water in the wastewater.

Optionally, the sludge dewatering subsystem comprises a sedimentation tank, a water storage tank and a dewatering machine. The sedimentation tank is provided with a seventh inlet and a ninth outlet. The seventh inlet is used for receiving the sludge discharged by the eighth outlet. The ninth outlet is used for discharging the settled sludge. The water storage tank is provided with an eighth inlet and a tenth outlet. The eighth inlet is for receiving the wastewater discharged from the seventh outlet. The tenth outlet is used for discharging waste water. The dewatering machine is provided with a sludge inlet, and the sludge inlet is used for receiving the sludge discharged by the ninth outlet and dewatering the sludge.

Optionally, the dehydrator is a stack screw dehydrator.

Optionally, the filtration subsystem comprises a fiber ball filter. The fiber ball filter comprises a first filter tank, the first filter tank is filled with fiber balls, and the first filter tank is provided with a first inlet and a first outlet. The first inlet is used for receiving the wastewater discharged by the tenth outlet. The first outlet is used for discharging the filtered waste water.

Optionally, the filtration subsystem further comprises an activated carbon filter. The active carbon filter comprises a second filtering tank, and active carbon is filled in the second filtering tank. The second filter tank is provided with a second inlet and a second outlet. The second inlet is used for receiving the waste water discharged from the first outlet. The second outlet is used for discharging the filtered waste water.

Drawings

FIG. 1 is a schematic block diagram of a wastewater treatment system for removing scale oil according to an embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of an oil removal regulation subsystem according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a module of an air-flotation oil removal subsystem according to an embodiment of the present disclosure;

FIG. 4 is a block diagram of a precipitation conditioning subsystem according to an embodiment of the present application;

FIG. 5 is a block diagram of a biochemical processing subsystem according to an embodiment of the present disclosure;

FIG. 6 is a schematic block diagram of a mud-water separation subsystem according to an embodiment of the present disclosure;

FIG. 7 is a schematic block diagram of a sludge dewatering subsystem according to an embodiment of the present disclosure;

fig. 8 is a schematic block diagram of a filtering subsystem according to an embodiment of the present disclosure.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "bottom," "inner," and the like are used in the positional or orientational relationships shown in the drawings for the purpose of convenience in describing the present application and simplifying the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The descaled oil wastewater contains a large amount of oil stains, and can cause serious pollution to soil, vegetation and underground water on the earth surface when being discharged randomly. The waste water contains oil, COD, BOD and NH ₃ And pollutants such as-N, TN and the like cause serious harm to human health. Therefore, the embodiment of the application provides a descaling oil wastewater treatment system to treat the wastewater to reach the discharge standard.

The embodiment of the application shown in figure 1 provides a descaled oil wastewater treatment system. The descaling oil wastewater treatment system can comprise an oil separation regulation subsystem 100, an air flotation oil removal subsystem 200, a precipitation regulation subsystem 300, a biochemical treatment subsystem 400, a mud-water separation subsystem 500, a sludge dewatering subsystem 600 and a filtering subsystem 700. The oil removal regulating subsystem 100 is used for oil removal treatment of the descaled oil wastewater. The air flotation oil removal subsystem 200 is connected to the oil removal regulating subsystem 100, and is configured to perform air flotation oil removal on the wastewater discharged from the oil removal regulating subsystem 100. The precipitation adjustment subsystem 300 is connected to the air-flotation oil-removing subsystem 200, and is configured to perform flocculation precipitation on the wastewater discharged from the air-flotation oil-removing subsystem 200. The biochemical treatment subsystem 400 is connected with the precipitation regulation subsystem 300 and is used for treating organic matters and ammonia nitrogen in the wastewater discharged by the precipitation regulation subsystem 300. The mud-water separation subsystem 500 is connected to the biochemical treatment subsystem 400, and is used for performing mud-water separation on the wastewater discharged from the biochemical treatment subsystem 400. The sludge dewatering subsystem 600 is connected to the mud-water separation subsystem 500, and is configured to dewater sludge discharged by the mud-water separation subsystem 500. The filtering subsystem 700 is connected to the sludge dewatering subsystem 600, and is used for filtering the wastewater discharged from the sludge dewatering subsystem 600.

It should be noted that the above-mentioned connection may be a direct connection or an indirect connection. The two subsystems that are connected may not be in full contact. Or can be directly communicated through a pipeline. For example, the oil removal regulation subsystem 100 and the air floatation oil removal subsystem 200 can be directly connected through a pipeline. So that the wastewater treated by the oil removal regulating subsystem 100 is discharged into the air flotation oil removal subsystem 200 through a pipeline.

The application embodiment provides a descale oily effluent disposal system. In the treatment of the descaled oil wastewater, the descaled oil wastewater is subjected to oil removal treatment in the oil removal regulator subsystem 100 to remove floating oil, and further, silt in the wastewater is settled by gravity. The wastewater treated in the oil removal regulating subsystem 100 enters an air flotation oil removal subsystem 200 for air flotation oil removal. The wastewater discharged from the air flotation oil removal subsystem 200 is added with a chemical agent in the precipitation regulation subsystem 300 for flocculation precipitation, and the treated wastewater is discharged into the biochemical treatment subsystem 400 for treating organic matters and ammonia nitrogen in the wastewater through bacteria. The wastewater discharged after being treated by the biochemical treatment subsystem 400 is subjected to sludge-water separation in the sludge-water separation subsystem 500. The separated wastewater is dewatered in the sludge dewatering subsystem 600 and filtered in the filtration subsystem 700. Finally, the descaled oil wastewater is treated into water reaching the standard. The descaling oil wastewater treatment system is high in efficiency, and the treated water meets the discharge standard.

In some embodiments of the present application, floating oil in wastewater is treated for ease. The oil separation regulation subsystem 100 shown with reference to fig. 2 may include a settling oil separation device 110, a floating oil collection device 120, and a regulation tank 130. The settling oil separator 110 includes an oil separator 111, at least one first baffle 1120, at least one second baffle 1130, and a first inclined tube filler 113. The oil barrier 111 has a first inlet 1100, a second outlet 1200 and a third outlet 1300. The first inlet 1100 is for receiving descaled oil wastewater. The second outlet 1200 is used to discharge the wastewater subjected to the oil removal treatment. The third outlet 1300 is for discharging the floating oil. The first baffle 1120 has one end installed at the top of the oil-separating tank 111 and the other end extended toward the bottom of the oil-separating tank 111. One end of the second baffle 1130 is mounted to the bottom of the oil-separating groove 111, and the other end extends toward the top of the oil-separating groove 111. A waste flow channel 1140 is formed between adjacent first and second baffle plates 1120 and 1130. The first and second baffle plates 1120 and 1130 are used to block oil in the descaled waste water and float the oil on the water surface. The first tube fillers 113 are installed between two adjacent first baffle plates 1120 and second baffle plates 1130. One end of the first inclined tube filler 113 is connected to the first baffle 1120, and the other end of the first inclined tube filler 113 is connected to the second baffle 1130. The first tube packing 113 is disposed adjacent to the second outlet 1200. The included angle between the conveying channel in the first inclined tube filler 113 and the lower surface of the first inclined tube filler 113 is 30-90 degrees, preferably 45-90 degrees, and more preferably 60-90 degrees. The alpha is 30 degrees, 45 degrees or 60 degrees and 75 degrees, and the treatment efficiency of the wastewater is improved. The oil-separating groove 111 includes a first bottom plate 1122 and a second bottom plate 1133 mounted at the bottom, and an included angle between the first bottom plate 1122 and the second bottom plate 1133 is 120 ° to 180 °, preferably 150 ° to 180 °, and specifically β is 120 °, 150 °, and 160 °. After the wastewater is treated by the first inclined tube filler 113, the wastewater can be converged to the second outlet 1200. The first floor 1122 is located below the first tube chute filler 113 and the second floor 1133 is located adjacent to the second outlet 1200. The first inclined tube filler 113 is used for separating oil, mud and water from the wastewater after the oil separation treatment.

The embodiment of the application provides a sediment oil interceptor 110. The wastewater enters the oil-barrier tank 111 through the first inlet 1100. By the arrangement of the first baffle 1120 and the second baffle 1130. The wastewater flows in the wastewater flow path 1140, thereby increasing the flow path of the wastewater, floating the oil on the water surface, and improving the treatment efficiency. And further oil, mud and water separation is performed on the wastewater through the first inclined tube filler 113.

Based on the above, the settling oil-trap 110 further includes an overflow pipe 1144. The flow-through pipe 1144 is installed in the oil-blocking groove 111 and communicates with the second outlet 1200. The second bottom plate 1133 is located below the flow-through pipe 1144, and the flow-through pipe 1144 is used for discharging the wastewater separated by the first inclined tube packing 113.

The floating oil collecting device 120 may include a floating oil collecting tank 121. The oil slick collection tank 121 has a second inlet 1210, the second inlet 1210 is used for receiving the oil slick discharged from the third outlet 1300, and the third outlet 1300 is connected to the second inlet 1210. The conditioning tank 130 may include a conditioning tank 131, a detector 132, and a heater 133. The conditioning tank 131 has a third inlet 1310 for receiving the waste water discharged from the second outlet 1200 and a fourth outlet 1320, the third inlet 1310 being connected to the second outlet 1200, and the fourth outlet 1320 for discharging the conditioned waste water. The detector 132 is installed in the adjustment tank 131 for real-time monitoring of the pH and liquid level of the wastewater. Example detection meters 132 may include a pH meter and a liquid level meter. The pH meter is used to monitor pH in the wastewater, and the level meter is used to monitor the level of the wastewater in the adjustment tank 131. A heater 133 is installed in the conditioning tank 131 to heat the wastewater. The heater 133 may be a steam heating coil, and the present application is not particularly limited thereto.

Based on the above, the wastewater containing descaled oil enters the oil separation tank 111 through the first inlet 1100, and the wastewater is subjected to gravity oil separation in the oil separation tank 111. Silt in the wastewater settles into a sludge bucket 1166 at the bottom of the oil separation tank 111 through gravity, and the sludge is discharged periodically through a sludge discharge pump 1188. Because of the lower density of the oil, the oil floats to the surface of the water under the barrier of the baffle 112. The oil discharges the oil slick through the third outlet 1300 and into the oil slick collection tank 121 through the second inlet 1210. The first inclined tube packing 113 separates oil, sludge and water in the wastewater by using the shallow layer principle. The oil has a low density, gradually moves upward on the upper surface of the first swash plate packing 113, floats on the water surface, and is discharged through the third outlet 1300. The suspended matter in the wastewater has a high density and gradually moves downward in the lower layer of the first inclined tube packing 113. In addition, the liquid level of the floating oil is monitored by the liquid level meter in the floating oil collecting tank 121, and the floating oil is discharged periodically by the floating oil discharge pump in the floating oil collecting tank 121 and recycled. The wastewater treated in the oil-barrier tank 111 is discharged through the second outlet 1200 and is discharged into the adjustment tank 131 through the third inlet 1310. The pH meter in the adjustment tank 131 monitors the pH of the wastewater in real time. The steam heating coil who disposes heats waste water, ensures winter steady operation. After the water amount reaches a certain level, the water is lifted to the air floatation oil removal subsystem 200 by the lift pump under the control of the liquid level meter in the adjusting tank 131.

In some embodiments of the present application, to facilitate further treatment of oil droplets and suspended matter in the wastewater. The air floatation oil removal subsystem 200 shown in fig. 3 may include a pH adjustment chamber 210, a mixer 220, a chemical agent chamber 230, a stirrer 240, an air floatation reaction chamber 250, a bubble generator 260, a scraper 270, a scum chamber 271 and a storage chamber 272. The pH adjusting chamber 210 has a fourth inlet 211, the fourth inlet 211 is for receiving the wastewater discharged from the fourth outlet 1320, and the fourth inlet 211 is connected to the fourth outlet 1320. A mixer 220 is installed in the pH adjusting chamber 210 for stirring and mixing the wastewater discharged from the fourth inlet 211 with an acid or a base. The exemplary mixer 220 is a line mixer that facilitates mixing of the wastewater with an acid or base to facilitate adjusting the pH of the wastewater. The reagent chamber 230 is communicated with the pH adjusting chamber 210 and is used for demulsifying and precipitating the mixture of the wastewater discharged from the pH adjusting chamber 210 and the reagent. An agitator 240 is installed in the chemical chamber 230 for agitating and mixing the wastewater and the chemical. The air flotation reaction cavity 250 is communicated with the medicament cavity 230 and is used for treating oil drops and suspended matters in the wastewater discharged from the medicament cavity 230. The bubble generator 260 is installed in the pH adjusting chamber 210. The port of the bubble generator 260 is used for generating dissolved air bubbles, and the port of the bubble generator is located in the air flotation reaction chamber 250.

It should be noted that the bubble generator 260 may include an air compressor 261, a dissolved air pump 262, a dissolved air tank 263 and a dissolved air releaser 264. The air compressor 261 and the dissolved air pump 262 are respectively communicated with the dissolved air tank 263 through pipelines, and the dissolved air tank 263 is communicated with the dissolved air releaser 264 through a pipeline. The air compressor 261, the dissolved air pump 262 and the dissolved air tank 263 are installed in the pH adjusting chamber 210, and the dissolved air releaser 264 is located in the air flotation reaction chamber 250. The scum board 270 is installed in the air flotation reaction chamber 250 and is used for scraping scum in the wastewater. The scum cavity 271 is used for receiving scum discharged from the air floatation reaction cavity 250. The storage chamber 272 is used for receiving the wastewater discharged from the air flotation reaction chamber 250. The storage chamber 272 has a fifth outlet 273, and the fifth outlet 273 is used to discharge waste water.

Based on the above, the fourth outlet 1320 of the adjustment tank 131 discharges the adjusted wastewater into the pH adjustment chamber 210 through the fourth inlet 211. Hydrochloric acid or sodium hydroxide is selectively added to the pH adjusting chamber 210 according to the monitoring result of the pH meter. Controlling the pH value of the waste water to be 8-9. When hydrochloric acid or sodium hydroxide is added to the pH adjusting chamber 210, the pH of the wastewater is rapidly adjusted by mixing through a line mixer. The conditioned waste water is discharged into the chemical chamber 230. Adding 20-50ppm of demulsifier into the medicament cavity 230, and reacting for 10min; 100-300ppm of polyaluminum chloride, and 15min of reaction time; 25-50ppm of polyacrylamide, and 10min of reaction time. The adsorption-bridging action of the chemical is utilized while the mixture is stirred by the stirrer 240. The petroleum and the suspended matters are demulsified and precipitated and enter the air flotation reaction chamber 250 under the action of the liquid level difference. In addition, under the action of the air compressor 261, the dissolved air pump 262 and the dissolved air tank 263. The generated micro dissolved air bubbles are released into the water through the dissolved air releaser 264, and oil drops and suspended matters in the water are supported to the water surface by the buoyancy of the micro bubbles. Scum is scraped off by the scum chain 274 and the scum plate 270 and the scum enters the scum chamber 271. After the scum is scraped off, the bottom clear liquid enters the storage chamber 272 through the first pipe 275. A fifth outlet 273 on the storage chamber 272 discharges the wastewater into the sedimentation conditioning subsystem 300.

In some embodiments of the present application, settling of silt in wastewater is facilitated. Referring to FIG. 4, the precipitation conditioning subsystem 300 may include a conditioning chamber 310, a blender 320, a precipitation chamber 330, a second tube filler 340, and a reaction chamber 350. The conditioning chamber 310 has a conditioning chamber inlet 311, the conditioning chamber inlet 311 being for receiving the wastewater discharged from the fifth outlet 273, the conditioning chamber inlet 311 being connected to the fifth outlet 273. An agitator 320 is installed in the conditioning chamber 310 for mixing the wastewater in the conditioning chamber 310 with the chemical. The settling chamber 330 communicates with the conditioning chamber 310. The second inclined tube packing 340 is installed in the settling chamber 330, and the second inclined tube packing 340 is used for performing sludge and water separation on the wastewater discharged into the settling chamber 330 from the regulating chamber 310. The reaction chamber 350 is used for receiving the wastewater treated by the second inclined tube packing 340, and the reaction chamber 350 has a sixth outlet 351, and the sixth outlet 351 is used for discharging the regulated wastewater in the reaction chamber 350.

Based on the above, the wastewater discharged from the fifth outlet 273 on the storage chamber 272 is discharged into the adjusting chamber 310 through the inlet of the adjusting chamber 310, and 50-200ppm of flocculating agent polyaluminium chloride is added into the adjusting chamber 310, and the reaction time is 15min; 15-40ppm of polyacrylamide, and reaction time is 10min; the mixture is stirred by a stirrer 320 to flocculate and precipitate the remaining petroleum products and suspended solids. The adjustment chamber 310 communicates with the settling chamber 330 through the through-hole 312. The treated wastewater in the conditioning chamber 310 enters the settling chamber 330 through the through-hole 312. The wastewater discharged through the overflowing hole 312 enters the bottom of the settling chamber 330 under the blockage of the water inlet baffle 313 in the settling chamber 330. Sludge settles in the bottom sludge hopper of the settling chamber 330. The clear liquid clings to the upper wall of the second inclined tube filler 340 and enters the top. The fine suspended matters are deposited to a sludge hopper tightly attached to the lower wall of the second inclined tube filler 340. The clarified overhead liquid overflows over weir 314 to reaction chamber 350 in settling chamber 330. Acid is added into the reaction chamber 350 to control the pH of the wastewater to 6.5-7.5. The wastewater in the reaction chamber 350 is discharged out of the biochemical treatment subsystem 400 through the sixth outlet 351.

In some embodiments of the present application, it is convenient to treat organic matter and ammonia nitrogen in wastewater. Referring to fig. 5, the biochemical treatment subsystem 400 may include an anoxic tank 410, a submersible water impeller 420, anoxic tank packing 430, an aerobic tank 440, and an aeration pipe 450. Wastewater discharged from the sixth outlet 351 is received and enters the anoxic tank 410. The submersible water impeller 420 is installed at the bottom of the anoxic tank 410 for agitating the wastewater. The anoxic tank packing 430 is installed in the anoxic tank 410. The aerobic tank 440 is communicated with the anoxic tank 430. The aeration pipe 450 is installed at the bottom of the aerobic tank 440 for aerating the wastewater in the aerobic tank 440.

Based on the above, the wastewater enters the anoxic tank 410. A pH meter is arranged in the anoxic tank 410 to monitor the pH of the water. Two submersible water impellers 420 are arranged in the anoxic tank 410 to impel and stir the wastewater, so that the anoxic environment of the wastewater is ensured. Biochemical bacteria are attached to the anoxic tank filler 430, and the contact area between the bacteria and the wastewater is increased. The anoxic tank 410 controls the indexes: HRT5-8h, DO < 0.5mg/L. The wastewater automatically flows into the aerobic tank. An aeration pipe 450 is arranged in the aerobic tank 440 to aerate the wastewater. The dissolved oxygen tester 441 is used for index monitoring, DO is controlled to be 2-4mg/L, HRT of an aerobic pool is 14-18h, and MLSS is controlled to be 3500-4000mg/L. Two nitrifying liquid reflux pumps 442 are arranged in the aerobic tank 440 and reflux to the anoxic tank 410. The wastewater overflows through the outlet pipe 443 to the mud-water separation subsystem 500.

In some embodiments of the present application, to facilitate further treatment of silt in the wastewater. The mud and water separation subsystem 500 shown with reference to FIG. 6 may include a mud scraper tank 510 and a mud scraper 520. The mud scraping pot 510 has a seventh outlet 5110, an eighth outlet 5120, and a sixth inlet 5130. The sixth inlet 5130 is used for receiving the wastewater discharged from the outlet pipe 443 of the aerobic tank 440. The seventh outlet 5110 is used to discharge the sludge-scraped wastewater. The eighth outlet 5120 is used to discharge sludge. A mud scraper 520 is installed in the mud scraping tank 510 for separating mud from water in the wastewater.

Based on the above, a steady flow barrel 511 is arranged in the mud scraping tank 510, and the wastewater discharged from the aerobic tank 440 is discharged into the steady flow barrel 511 through a sixth inlet 513, so as to reduce the turbulence of the biochemical sludge. The wastewater enters the mud scraping tank 510 through the bottom in the flow stabilizing barrel 511. Under the rotation of the mud scraper 520, the mud is scraped into a mud scraping mud bucket 512 at the bottom of the mud scraping tank 510. The sludge is discharged to the sedimentation tank 610 and the anoxic tank 410 by the sludge discharge pump 521 and the nitrification liquid return pump 522. The top supernatant is discharged through the seventh outlet 5110 by overflowing through the first overflow weir 513. The sludge is discharged from the eighth outlet 5120, so that the primary separation of sludge and water is realized.

In some embodiments of the present application, to achieve water removal from sludge, the sludge dewatering subsystem 600 shown with reference to fig. 7 may include a settling tank 610, a water storage tank 620, and a dewatering machine 630. The sedimentation tank 610 has a seventh inlet 6100 and a ninth outlet 6200. The seventh inlet 6100 is for receiving the sludge discharged from the eighth outlet 5120. The ninth outlet 6200 is used to discharge the settled sludge. The water storage pool 620 has an eighth inlet 6400 and a tenth outlet 6300. The eighth inlet 6400 serves to receive the wastewater discharged from the seventh outlet 5110. The tenth outlet 6300 is used to discharge wastewater. Dewaterer 630 has a sludge inlet 6310, and sludge inlet 6310 is adapted to receive sludge from ninth outlet 6200 for dewatering. The dehydrator 630 is a stack screw dehydrator.

Based on the above, after the sedimentation tank 610 reaches a certain liquid level, under the control of the liquid level meter of the sedimentation tank 610. The sludge lifting pump 611 is started to lift the water-containing sludge, the water-containing sludge is discharged through the ninth outlet 6200, and the sludge enters the spiral-stacking dehydrator through the sludge inlet 6310. PAM is added into a dehydration cavity of the spiral-wound overlapping dehydrator to convert fine sludge floc into large-particle sediment. Sludge dewatering is realized in the dewatering cavity through extrusion among the laminated spiral plates. The filtrate after filter pressing flows back to the regulating reservoir 130 through a filtrate outlet 631 via a filtrate return pump 632. And (4) allowing the sludge subjected to press filtration to enter a sludge conveying screw, transferring the sludge into a sludge transport vehicle, and periodically carrying out outward treatment. After the clarified liquid in the reservoir 620 reaches a certain level, the lift pump is started under the control of the liquid level meter, and the clarified liquid is pumped to the filtration subsystem 700 through the tenth outlet 6300.

In some embodiments of the present application, to clean suspended matter from wastewater, the filtration subsystem 700, as shown with reference to fig. 8, may include a fiber ball filter 710 and an activated carbon filter 720. The fiber ball filter 710 may include a first filter tank 711, the first filter tank 711 is filled with fiber balls, and the first filter tank 711 has a first inlet 712 and a first outlet 713. The first inlet 712 is configured to receive wastewater (i.e., clarified liquid) discharged from the tenth outlet 6300. The first outlet 713 is for discharging filtered wastewater. The activated carbon filter 720 may include a second filter tank 721, and the second filter tank 721 is filled with activated carbon. The second filter tank 721 has a second inlet 722 and a second outlet 723. The second inlet 722 is for receiving the waste water discharged from the first outlet 713. The second outlet 723 is used to discharge filtered wastewater.

Based on the above, the clarified liquid is discharged from the tenth outlet 6300, and is discharged into the first filter tank 711 through the first inlet 712, the filtered clean water is discharged from the first outlet 713, the first outlet 713 is connected to the second inlet 722 of the second filter tank 721, and the clean water is adsorbed by the activated carbon in the activated carbon filter 720COD、NH ₃ Removing N and TP, reaching the effluent standard, discharging the effluent after reaching the standard, and discharging the effluent through a second outlet 723.

To avoid clogging of the fiber ball filter 710 and the activated carbon filter 720. The backwash flow of the fiber ball filter 710 is as follows: backwash water enters the fiber ball filter 710 through the first backwash inlet 7100, and simultaneously the stirring motor 7110 is started to stir, so that the petroleum and suspended matters inside are backwashed, and the backwash water is discharged into the trench or the regulating tank 130 through the first backwash outlet 7200.

The backwash flow of the activated carbon filter 720 is as follows: the backwash water enters the activated carbon filter 720 through the second backwash inlet 726, the inside activated carbon filter material is backwashed to achieve backwashing, and the cleaned suspended matter is discharged into the trench or the regulating tank 130 through the second backwash outlet 7300. When the production is stopped, the fiber ball filter 710 can be emptied through the drain hole 719; carbon filter 720 may be evacuated via an evacuation port 729.

The particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. Deposit oil removal device, its characterized in that includes:

the oil separation tank is provided with a first inlet, a second outlet and a third outlet, the first inlet is used for receiving the descaled oil wastewater, the second outlet is used for discharging the wastewater subjected to oil separation treatment, and the third outlet is used for discharging floating oil;

one end of the first baffle plate is arranged at the top of the oil separation tank, and the other end of the first baffle plate extends towards the bottom of the oil separation tank;

at least one second baffle plate, one end of which is installed at the bottom of the oil separation tank, and the other end of which extends to the top of the oil separation tank, wherein a wastewater flow channel is formed between the adjacent first baffle plate and the second baffle plate, and the plurality of first baffle plates and the plurality of second baffle plates are used for blocking oil in the descaled wastewater so that the oil floats on the water surface; and

the first inclined tube filler is arranged between two adjacent first baffle plates and the second baffle plates, the first inclined tube filler is arranged close to the second outlet, an included angle between a conveying channel in the first inclined tube filler and the lower surface of the first inclined tube filler is 30-90 degrees, the oil separation tank comprises a first bottom plate and a second bottom plate which are arranged at the bottom, the included angle between the first bottom plate and the second bottom plate is 120-180 degrees, the first bottom plate is positioned below the first inclined tube filler, the second bottom plate is arranged close to the second outlet, and the first inclined tube filler is used for separating oil, mud and water from the wastewater after oil separation treatment.

2. The sediment oil trap of claim 1, further comprising:

and the overflow pipe is arranged in the oil separation groove and is communicated with the second outlet, the second bottom plate is positioned below the overflow pipe, and the overflow pipe is used for discharging wastewater after the first inclined pipe filler is separated.

3. A descaled oil wastewater treatment system, comprising:

the oil separation regulation subsystem is used for carrying out oil separation treatment on the descaled oil wastewater and comprises a precipitation oil separation device, and the precipitation oil separation device adopts the precipitation oil separation device of claim 1 or 2;

the air floatation oil removal subsystem is connected with the oil separation regulating subsystem and is used for carrying out air floatation oil removal on the wastewater discharged by the oil separation regulating subsystem;

the sedimentation adjusting subsystem is connected with the air floatation oil removal subsystem and is used for performing flocculation sedimentation on the wastewater discharged by the air floatation oil removal subsystem;

the biochemical treatment subsystem is connected with the precipitation regulation subsystem and is used for carrying out organic matter and ammonia nitrogen treatment on the wastewater discharged by the precipitation regulation subsystem;

the sludge-water separation subsystem is connected with the biochemical treatment subsystem and is used for carrying out sludge-water separation on the wastewater discharged by the biochemical treatment subsystem;

the sludge dewatering subsystem is connected with the mud-water separation subsystem and is used for dewatering the sludge discharged by the mud-water separation subsystem; and

and the filtering subsystem is connected with the sludge dewatering subsystem and is used for filtering the wastewater discharged by the sludge dewatering subsystem.

4. The descaled oil wastewater treatment system according to claim 3, wherein the oil separation regulation subsystem further comprises a floating oil collecting device and a regulation tank;

the floating oil collecting device comprises:

the floating oil collecting tank is provided with a second inlet, the second inlet is used for receiving the floating oil discharged by the third outlet, and the third outlet is connected with the second inlet;

the regulating reservoir includes:

the adjusting tank is provided with a third inlet and a fourth outlet, the third inlet is used for receiving the wastewater discharged by the second outlet, the third inlet is connected with the second outlet, and the fourth outlet is used for discharging the adjusted wastewater;

the detection meter is arranged in the adjusting tank and is used for monitoring the pH value and the liquid level of the wastewater in real time; and

and the heater is arranged in the adjusting tank and used for heating the wastewater.

5. A scale removing oil wastewater treatment system according to claim 4, wherein the air-flotation oil removing subsystem comprises:

a pH adjusting chamber having a fourth inlet for receiving wastewater discharged from the fourth outlet, the fourth inlet being connected to the fourth outlet;

the mixer is arranged in the pH adjusting cavity and is used for stirring and mixing the wastewater discharged from the fourth inlet with acid or alkali;

the reagent cavity is communicated with the pH adjusting cavity and is used for mixing the wastewater discharged from the pH adjusting cavity with a reagent to perform demulsification and precipitation;

the stirrer is arranged in the medicament cavity and is used for stirring and mixing the wastewater and the medicament;

the air floatation reaction cavity is communicated with the reagent cavity and is used for treating oil drops and suspended matters in the wastewater discharged from the reagent cavity;

the bubble generator is arranged in the pH adjusting cavity, a port of the bubble generator is used for generating dissolved air bubbles, and the port of the bubble generator is positioned in the air floatation reaction cavity;

the scum board is arranged in the air floatation reaction cavity and is used for scraping scum in the wastewater;

the scum cavity is used for receiving scum discharged from the air floatation reaction cavity; and

and the storage cavity is used for receiving the wastewater discharged from the air flotation reaction cavity and is provided with a fifth outlet, and the fifth outlet is used for discharging the wastewater.

6. The descaled oil wastewater treatment system of claim 5 wherein the precipitation conditioning subsystem comprises:

the adjusting cavity is provided with an adjusting cavity inlet, the adjusting cavity inlet is used for receiving the wastewater discharged by the fifth outlet, and the adjusting cavity inlet is connected with the fifth outlet;

the stirrer is arranged in the adjusting cavity and is used for mixing the wastewater in the adjusting cavity with the medicament;

the sedimentation cavity is communicated with the adjusting cavity;

the second inclined tube filler is arranged in the settling cavity and is used for carrying out mud-water separation on the wastewater discharged into the settling cavity from the adjusting cavity; and

and the reaction cavity is used for receiving the wastewater treated by the second inclined tube filler and is provided with a sixth outlet, and the sixth outlet is used for discharging the regulated wastewater in the reaction cavity.

7. The descaled oil wastewater treatment system according to claim 6, wherein the biochemical treatment subsystem comprises:

the anoxic pond is used for receiving the wastewater discharged by the sixth outlet;

the submersible water impeller is arranged at the bottom of the anoxic pond and is used for pushing and stirring the wastewater;

an anoxic tank filler installed in the anoxic tank;

the aerobic tank is communicated with the anoxic tank; and

and the aeration pipe is arranged at the bottom of the aerobic tank and is used for aerating the wastewater in the aerobic tank.

8. The descaled oil wastewater treatment system according to claim 7, wherein the sludge-water separation subsystem comprises:

the sludge scraping tank is provided with a seventh outlet, an eighth outlet and a sixth inlet, the sixth inlet is used for receiving the wastewater discharged by the aerobic tank, the seventh outlet is used for discharging the wastewater after sludge scraping treatment, and the eighth outlet is used for discharging sludge; and

and the mud scraper is arranged in the mud scraping tank and is used for separating mud and water in the wastewater.

9. The descaled oil wastewater treatment system according to claim 8, wherein the sludge dewatering subsystem comprises a sedimentation tank, a water storage tank and a dewatering machine;

the sedimentation tank is provided with a seventh inlet and a ninth outlet, the seventh inlet is used for receiving the sludge discharged by the eighth outlet, and the ninth outlet is used for discharging the settled sludge;

the water storage tank is provided with an eighth inlet and a tenth outlet, the eighth inlet is used for receiving the wastewater discharged from the seventh outlet, and the tenth outlet is used for discharging the wastewater;

the dewatering machine is provided with a sludge inlet, and the sludge inlet is used for receiving the sludge discharged by the ninth outlet and dewatering the sludge.

10. The descaled oil wastewater treatment system of claim 9 wherein the filtration subsystem comprises a fiber ball filter and an activated carbon filter;

the fiber ball filter comprises a first filter tank, fiber balls are filled in the first filter tank, a first inlet and a first outlet are formed in the first filter tank, the first inlet is used for receiving the wastewater discharged from the tenth outlet, and the first outlet is used for discharging the filtered wastewater;

the active carbon filter comprises a second filtering tank, active carbon is filled in the second filtering tank, a second inlet and a second outlet are formed in the second filtering tank, the second inlet is used for receiving the waste water discharged from the first outlet, and the second outlet is used for discharging the filtered waste water.

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