CN111196646B - Activated carbon sewage treatment device and method thereof - Google Patents
Activated carbon sewage treatment device and method thereof Download PDFInfo
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- CN111196646B CN111196646B CN202010038007.8A CN202010038007A CN111196646B CN 111196646 B CN111196646 B CN 111196646B CN 202010038007 A CN202010038007 A CN 202010038007A CN 111196646 B CN111196646 B CN 111196646B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G55/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process
- C10G55/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only
- C10G55/04—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only including at least one thermal cracking step
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Abstract
The invention discloses an active carbon sewage treatment device and a method thereof, which are characterized by comprising the following steps: s1: introducing the waste emulsified wastewater liquid into a grid filter for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment; s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor subjected to coagulation conditioning into a sludge dewatering machine for settling separation, and discharging the supernatant into an oil-water separator for oil-water separation to obtain oily components; the invention avoids the problems that when the emulsified wastewater liquid is recovered and reused, the emulsified wastewater liquid is demulsified and then directly subjected to molecular distillation to purify the lubricating oil, heavy hydrocarbons in the waste emulsion waste liquid are not subjected to full cyclic cracking, the obtained lubricating oil is low in amount and contains more impurities, and the recovery rate of the emulsified wastewater liquid is influenced.
Description
Technical Field
The invention belongs to the technical field of recovery methods of emulsified wastewater liquid, and particularly relates to an activated carbon sewage treatment device and an activated carbon sewage treatment method.
Background
In industrial production, a large amount of emulsified waste water liquid is generated in return, such as emulsified cut blood, some greasy metal cutting liquid or other industrial production large amounts of emulsified waste water liquid, the existing emulsified waste water liquid treatment has certain defects in use, for example, in the recovery and reuse of emulsified waste water, the emulsified waste water is demulsified and then molecular distillation is directly carried out to purify the lubricating oil, heavy hydrocarbons in the waste emulsion waste liquid are not fully circularly cracked, the obtained lubricating oil has less amount and more impurities, the recovery rate of the emulsified waste water is influenced, meanwhile, when the emulsified wastewater liquid is recovered and reused, the generated oil residue can be discharged only by additionally carrying out purification and drying treatment, so that the waste heat generated during thermal cracking is difficult to be fully utilized, and the energy conservation of the recovery and reuse of the emulsified wastewater liquid is influenced.
Disclosure of Invention
The invention aims to provide an activated carbon sewage treatment device, which is characterized in that; including first grid filter, first grid filter's lower part be provided with sludge dewaterer, sludge dewaterer's the fixed oil water separator that is provided with in lower part, oil water separator's lower part be provided with second grid filter, second grid filter communicate through pipe and sewage treatment pond, sewage treatment pond communicate through pipe and heating boiler, first grid filter on evenly placed active carbon, second grid filter's lateral part be provided with the anion surfactant charge door, sewage treatment pond be provided with rabbling mechanism.
A treatment method of an activated carbon sewage treatment device comprises the following steps:
s1: introducing the waste emulsified wastewater liquid into a first grid filter for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment;
s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor subjected to coagulation conditioning into a sludge dewatering machine for settling separation, and discharging the supernatant into an oil-water separator for oil-water separation to obtain oily components;
S3: adding the oily component treated in step S2 to a second grid filter and adding an anionic surfactant, and then discharging to a sewage treatment tank;
s4: separating an upper emulsion layer in the sewage treatment tank, adjusting the pH value in a mixing tank to 7-9, stirring, standing, separating liquid, separating the emulsion layer above the solution, and discharging the wastewater below the solution to a purification tank for subsequent treatment;
s5: heating the emulsion layer obtained in the step S4 to 460-600 ℃ under the pressure of 80-100 Psig in a heating boiler for 5-10S, so as to facilitate the cracking of heavy hydrocarbon in the waste emulsion waste liquid, and heating the sludge in the step S2 by using the waste heat of the heating boiler;
s6: reducing the temperature of the waste oil mixture after thermal cracking to 280-380 ℃, stirring for 10-20 min, and volatilizing a large amount of volatile oil components;
s7: continuously putting the solution obtained in the step S6 and removing a large amount of volatile oil components into a heating boiler to heat to 380-500 ℃ for 5-10S, and then continuously heating the sludge in the step S2 by using the waste heat of the boiler;
s8: the liquid obtained after the treatment of the step S7 is subjected to a low-temperature heating process in a step S6, so that residual volatile oily components are removed;
S9: subjecting the non-volatile oily component obtained in step S8 to molecular distillation to separate a base oil fraction to obtain a reusable lubricating oil;
the grill filter used in step S1 and step S3 is a ZG type rotary drum grill filter.
The coagulation conditioner in the step S2 adopts polyaluminium chloride.
The anionic surfactant in step S3 was composed of: 5-30 parts of fatty acid methyl ester sulfonate, 2-10 parts of alkyl polyglycoside, 58-92 parts of water and 0.5-2 parts of sodium chloride or potassium chloride.
The anionic surfactant comprises 20 parts of fatty acid methyl ester sulfonate, 8 parts of alkyl polyglycoside, 75 parts of water and 1.5 parts of sodium chloride or potassium chloride.
The sludge cake obtained in step S7 is crushed and discharged.
Step S9 the molecular distillation process includes three stages of distillation in parallel or in series.
The temperature of the three-stage distillation is 190-220 ℃, 220-240 ℃, 240-280 ℃, and the absolute pressure is 50-80 Pa, 20-50 Pa, 10-20 Pa.
Compared with the prior art, the invention has the following beneficial effects:
1. separating an upper emulsion layer, adjusting the pH value in a mixing tank to 7-9, stirring, standing, separating the emulsion layer above the solution, discharging wastewater below the solution to a purification tank for subsequent treatment, heating the emulsion layer to 460-600 ℃ at the pressure of 80-100 Psig for 5-10 s to facilitate cracking of heavy hydrocarbons in waste emulsion waste liquid, reducing the temperature of the waste oil mixture after thermal cracking to 280-380 ℃, stirring, controlling the time to 10-20 min, and volatilizing a large amount of volatile oil components; and (2) continuously placing the solution with a large amount of volatile oily components removed into a heating boiler to heat to 380-500 ℃ for 5-10S, and then carrying out the low-temperature heating process in the step S6 on the liquid obtained after the treatment in the step S7 to remove the residual volatile oily components, so that the problems that when the emulsified wastewater is recovered and reused, the emulsified wastewater is demulsified and then is directly subjected to molecular distillation to purify the lubricating oil, heavy hydrocarbons in the waste emulsified wastewater are not fully cracked in a circulating manner, the obtained lubricating oil is low in amount and contains more impurities, and the recovery rate of the emulsified wastewater is influenced are solved.
2. The emulsifying layer is heated to 460-600 ℃ at the pressure of 80-100 Psig for 5-10S, so that the cracking of heavy hydrocarbon in the waste milk waste liquid is facilitated, and the sludge in the step S2 is heated by using the waste heat of a boiler; reducing the temperature of the waste oil mixture after thermal cracking to 280-380 ℃, stirring for 10-20 min, and volatilizing a large amount of volatile oil components; and (3) continuously putting the solution without a large amount of volatile oil components into a heating boiler to heat to 380-500 ℃, and after the heating time is 5-10S, continuously heating the sludge in the step S2 by using the waste heat of the boiler, so that the problems that the generated oil residue can be discharged only by additionally carrying out purification and drying treatment when the emulsified wastewater is recovered and reused, the waste heat during thermal cracking is difficult to be fully utilized, and the energy conservation of the recovery and reuse of the emulsified wastewater is influenced are solved.
Drawings
FIG. 1 is a schematic view showing the construction of an activated carbon sewage treatment apparatus according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1
Example one
The utility model provides an active carbon sewage treatment plant, includes first grid filter 1, and the lower part of first grid filter 1 is provided with sludge dewaterer 2, and sludge dewaterer 2's the fixed oil water separator 3 that is provided with in lower part, oil water separator 3's lower part is provided with second grid filter 4, and second grid filter 4 communicates through pipe and sewage treatment pond 5, and sewage treatment pond 5 communicates through pipe and heating boiler 6, first grid filter 1 on evenly placed active carbon, second grid filter 4's lateral part is provided with anion surfactant feed inlet 7, sewage treatment pond 5 is provided with rabbling mechanism 8.
A treatment method of an activated carbon sewage treatment device comprises the following steps:
s1: introducing the waste emulsified wastewater liquid into a first grid filter 1 for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment;
s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor after coagulation conditioning into a sludge dewatering machine 2 for settling separation, and discharging the supernatant into an oil-water separator 3 for oil-water separation to obtain oily components;
s3: adding the oily component treated in step S2 to the second grill filter 4 and adding an anionic surfactant, and then discharging to the sewage treatment tank 5;
S4: separating the upper emulsion layer in the sewage treatment tank 5, adjusting the pH value in a mixing tank to 7, stirring, standing, separating liquid, separating the emulsion layer above the solution, and discharging the wastewater below the solution to a purification tank for subsequent treatment;
s5: heating the emulsion layer obtained in the step S4 in a heating boiler 6 to 460 ℃ under the pressure of 80Psig for 5S, so as to facilitate the cracking of heavy hydrocarbons in the waste emulsion waste liquid, and heating the sludge in the step S2 by using the waste heat of the heating boiler 6;
s6: reducing the temperature of the waste oil mixture subjected to thermal cracking to 280 ℃, stirring for 10min, and volatilizing a large amount of volatile oil components;
s7: continuously putting the solution obtained in the step S6 and removing a large amount of volatile oil components into a heating boiler 6 to heat to 380 ℃ for 5S, and then continuously heating the sludge in the step S2 by using the waste heat of the boiler;
s8: the liquid obtained after the treatment of the step S7 is subjected to a low-temperature heating process in a step S6, so that residual volatile oily components are removed;
s9: subjecting the non-volatile oily component obtained in step S8 to molecular distillation to separate a base oil fraction to obtain a reusable lubricating oil;
the grill filter used in step S1 and step S3 is a ZG type rotary drum grill filter.
The coagulating amendment in step S2 is polyaluminium chloride.
The anionic surfactant in step S3 is composed of: 5 parts of fatty acid methyl ester sulfonate, 2 parts of alkyl polyglycoside, 58 parts of water and 0.5 part of sodium chloride or potassium chloride.
The anionic surfactant comprises 20 parts of fatty acid methyl ester sulfonate, 8 parts of alkyl polyglycoside, 75 parts of water and 1.5 parts of sodium chloride or potassium chloride.
And (4) crushing the hard sludge blocks obtained in the step (S7) and then discharging the crushed hard sludge blocks.
Step S9 the molecular distillation process includes three stages of distillation in parallel or in series.
The temperature of the three-stage distillation is 190 ℃, 220 ℃ and 240 ℃, and the absolute pressure is 50Pa, 20Pa and 10 Pa.
Example two
The utility model provides an active carbon sewage treatment plant, includes first grid filter 1, and first grid filter 1's lower part is provided with sludge dewaterer 2, and sludge dewaterer 2's fixed oil water separator 3 that is provided with in lower part, oil water separator 3's lower part is provided with second grid filter 4, and second grid filter 4 communicates through pipe and sewage treatment pond 5, and sewage treatment pond 5 communicates through pipe and heating boiler 6, first grid filter 1 on evenly placed active carbon, second grid filter 4's lateral part is provided with anion surfactant feed inlet 7, sewage treatment pond 5 is provided with rabbling mechanism 8.
A treatment method of an activated carbon sewage treatment device comprises the following steps:
s1: introducing the waste emulsified wastewater liquid into a first grid filter 1 for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment;
s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor after coagulation conditioning into a sludge dewatering machine 2 for settling separation, and discharging the supernatant into an oil-water separator 3 for oil-water separation to obtain oily components;
s3: adding the oily component treated in step S2 to the second grill filter 4 and adding an anionic surfactant, and then discharging to the sewage treatment tank 5;
s4: separating the upper emulsion layer in the sewage treatment tank 5, adjusting the pH value in a mixing tank to be 8, stirring, standing, separating liquid, separating the emulsion layer above the solution, and discharging the wastewater below the solution to a purification tank for subsequent treatment;
s5: heating the emulsion layer obtained in the step S4 to 500 ℃ under the pressure of 90Psig in a heating boiler 6 for 7S, so as to facilitate the cracking of heavy hydrocarbon in the waste emulsion waste liquid, and heating the sludge in the step S2 by using the waste heat of the heating boiler 6;
s6: reducing the temperature of the waste oil mixture subjected to thermal cracking to 340 ℃, stirring for 15min, and volatilizing a large amount of volatile oil components;
S7: continuously putting the solution obtained in the step S6 and removing a large amount of volatile oil components into a heating boiler 6 to heat to 440 ℃, and after the heating time is 7S, continuously heating the sludge in the step S2 by using the waste heat of the boiler;
s8: the liquid obtained after the treatment of the step S7 is subjected to a low-temperature heating process in a step S6, so that residual volatile oily components are removed;
s9: subjecting the non-volatile oily component obtained in step S8 to molecular distillation to separate a base oil fraction to obtain a reusable lubricating oil;
the grill filter used in step S1 and step S3 is a ZG type rotary drum grill filter.
The coagulation conditioner in the step S2 adopts polyaluminium chloride.
The anionic surfactant in step S3 was composed of: 17 parts of fatty acid methyl ester sulfonate, 6 parts of alkyl polyglycoside, 75 parts of water and 1.2 parts of sodium chloride or potassium chloride.
The anionic surfactant comprises 20 parts of fatty acid methyl ester sulfonate, 8 parts of alkyl polyglycoside, 75 parts of water and 1.5 parts of sodium chloride or potassium chloride.
The sludge cake obtained in step S7 is crushed and discharged.
Step S9 the molecular distillation process includes three stages of distillation in parallel or in series.
The temperature of the three-stage distillation is 215 ℃, 230 ℃ and 260 ℃, and the absolute pressure is 65Pa, 35Pa and 15 Pa.
EXAMPLE III
The utility model provides an active carbon sewage treatment plant, includes first grid filter 1, and the lower part of first grid filter 1 is provided with sludge dewaterer 2, and sludge dewaterer 2's the fixed oil water separator 3 that is provided with in lower part, oil water separator 3's lower part is provided with second grid filter 4, and second grid filter 4 communicates through pipe and sewage treatment pond 5, and sewage treatment pond 5 communicates through pipe and heating boiler 6, first grid filter 1 on evenly placed active carbon, second grid filter 4's lateral part is provided with anion surfactant feed inlet 7, sewage treatment pond 5 is provided with rabbling mechanism 8.
A treatment method of an activated carbon sewage treatment device comprises the following steps:
s1: introducing the waste emulsified wastewater liquid into a first grid filter 1 for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment;
s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor after coagulation conditioning into a sludge dewatering machine 2 for settling separation, and discharging the supernatant into an oil-water separator 3 for oil-water separation to obtain oily components;
s3: adding the oily component treated in step S2 to the second grill filter 4 and adding an anionic surfactant, and then discharging to the sewage treatment tank 5;
S4: separating the upper emulsion layer in the sewage treatment tank 5, adjusting the pH value in a mixing tank to 9, stirring, standing, separating liquid, separating the emulsion layer above the solution, and discharging the wastewater below the solution to a purification tank for subsequent treatment;
s5: heating the emulsion layer obtained in the step S4 to 600 ℃ under the pressure of 100Psig in a heating boiler 6 for 10S, so as to facilitate the cracking of heavy hydrocarbon in the waste emulsion waste liquid, and heating the sludge in the step S2 by using the waste heat of the heating boiler 6;
s6: reducing the temperature of the waste oil mixture subjected to thermal cracking to 380 ℃, stirring for 20min, and volatilizing a large amount of volatile oil components;
s7: continuously putting the solution obtained in the step S6 and removing a large amount of volatile oil components into a heating boiler 6 to be heated to 500 ℃ for 10S, and continuously heating the sludge in the step S2 by using the waste heat of the boiler;
s8: the liquid obtained after the treatment of the step S7 is subjected to a low-temperature heating process in a step S6, so that residual volatile oily components are removed;
s9: subjecting the non-volatile oily component obtained in step S8 to molecular distillation to separate a base oil fraction to obtain a reusable lubricating oil;
the grill filter used in step S1 and step S3 is a ZG type rotary drum grill filter.
The coagulation conditioner in the step S2 adopts polyaluminium chloride.
The anionic surfactant in step S3 was composed of: 30 parts of fatty acid methyl ester sulfonate, 10 parts of alkyl polyglycoside, 92 parts of water and 2 parts of sodium chloride or potassium chloride.
The anionic surfactant comprises 20 parts of fatty acid methyl ester sulfonate, 8 parts of alkyl polyglycoside, 75 parts of water and 1.5 parts of sodium chloride or potassium chloride.
The sludge cake obtained in step S7 is crushed and discharged.
Step S9 the molecular distillation process includes three stages of distillation in parallel or in series.
The temperature of the three-stage distillation is 220 ℃, 240 ℃ and 280 ℃, and the absolute pressure is 80Pa, 50Pa and 20 Pa.
The invention can reasonably select the applicable embodiment according to the emulsified concentration of the sewage, the pollution degree, the local environmental conditions and the like, the above embodiments are reasonably selected according to the characteristics of the emulsified concentration, the low pollution degree, the medium pollution degree and the high pollution degree, and the implementers can reasonably adjust the factors such as other conditions which may influence the treatment parameters within the specified range of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A sewage treatment method using an activated carbon sewage treatment device is characterized by comprising the following steps:
s1: introducing the waste emulsified wastewater liquid into a first grid filter for filtering, separating out solid impurities, and discharging the obtained liquid into a wastewater purification tank for purification treatment;
s2: performing coagulation conditioning on the solid impurities in the step S1, discharging the mixed liquor subjected to coagulation conditioning into a sludge dewatering machine for settling separation, and discharging the supernatant into an oil-water separator for oil-water separation to obtain oily components;
s3: adding the oily component treated in step S2 to a second grid filter and adding an anionic surfactant, and then discharging to a sewage treatment tank;
s4: separating an upper emulsion layer in the sewage treatment tank, adjusting the pH value in a mixing tank to 7-9, stirring, standing, separating liquid, separating the emulsion layer above the solution, and discharging the wastewater below the solution to a purification tank for subsequent treatment;
S5: heating the emulsion layer obtained in the step S4 to 460-600 ℃ under the pressure of 80-100 Psig in a heating boiler for 5-10S, so as to facilitate the cracking of heavy hydrocarbon in the waste emulsion waste liquid, and heating the sludge in the step S2 by using the waste heat of the heating boiler;
s6: reducing the temperature of the waste oil mixture after thermal cracking to 280-380 ℃, stirring for 10-20 min, and volatilizing a large amount of volatile oil components;
s7: continuously putting the solution obtained in the step S6 and removing a large amount of volatile oil components into a heating boiler to heat to 380-500 ℃ for 5-10S, and continuously heating the sludge in the step S2 by using the waste heat of the boiler;
s8: the liquid obtained after the treatment of the step S7 is subjected to a low-temperature heating process in a step S6, so that residual volatile oily components are removed;
s9: subjecting the non-volatile oily component obtained in step S8 to molecular distillation to separate a base oil fraction to obtain a reusable lubricating oil;
sewage treatment plant includes first grid filter, first grid filter's lower part be provided with sludge dewaterer, sludge dewaterer's the fixed oil water separator that is provided with in lower part, oil water separator's lower part be provided with second grid filter, second grid filter communicate through pipe and sewage treatment pond, sewage treatment pond communicate through pipe and heating boiler, first grid filter on evenly placed active carbon, second grid filter's lateral part be provided with anion surfactant feed inlet, sewage treatment pond be provided with rabbling mechanism.
2. The sewage treatment method using the activated carbon sewage treatment apparatus according to claim 1, wherein: the grill filter used in step S1 and step S3 is a ZG type rotary drum grill filter.
3. The sewage treatment method using the activated carbon sewage treatment apparatus as set forth in claim 1, wherein: in step S2, polyaluminum chloride is used for coagulation conditioning.
4. The sewage treatment method using the activated carbon sewage treatment apparatus as set forth in claim 1, wherein: the anionic surfactant in step S3 was composed of: 5-30 parts of fatty acid methyl ester sulfonate, 2-10 parts of alkyl polyglycoside, 58-92 parts of water and 0.5-2 parts of sodium chloride or potassium chloride.
5. The sewage treatment method using an activated carbon sewage treatment apparatus according to claim 4, wherein: the anionic surfactant comprises 20 parts of fatty acid methyl ester sulfonate, 8 parts of alkyl polyglycoside, 75 parts of water and 1.5 parts of sodium chloride or potassium chloride.
6. The sewage treatment method using an activated carbon sewage treatment apparatus according to claim 1, wherein: and (4) crushing the heated sludge obtained in the step (S7) and then discharging.
7. The sewage treatment method using an activated carbon sewage treatment apparatus according to claim 1, wherein: step S9 the molecular distillation process includes three distillation stages in parallel or series.
8. The sewage treatment method using an activated carbon sewage treatment apparatus according to claim 7, wherein: the temperature of the three-stage distillation is 190-220 ℃, 220-240 ℃, 240-280 ℃, and the absolute pressure is 50-80 Pa, 20-50 Pa, 10-20 Pa.
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GB724213A (en) * | 1951-05-17 | 1955-02-16 | Standard Oil Dev Co | Improvements in or relating to the cracking of heavy hydrocarbon oils |
CN104556626A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Oil sludge demulsifier and oil sludge resourceful treatment process |
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