CN108975600B - Ground comprehensive treatment platform for thickened oil sewage - Google Patents

Ground comprehensive treatment platform for thickened oil sewage Download PDF

Info

Publication number
CN108975600B
CN108975600B CN201810707684.7A CN201810707684A CN108975600B CN 108975600 B CN108975600 B CN 108975600B CN 201810707684 A CN201810707684 A CN 201810707684A CN 108975600 B CN108975600 B CN 108975600B
Authority
CN
China
Prior art keywords
tank
sewage
water
pool
comprehensive treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810707684.7A
Other languages
Chinese (zh)
Other versions
CN108975600A (en
Inventor
戴捷
刘君臣
胡耀笛
兰天翔
周伟强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUBEI JINRI ECOLOGICAL ENERGY CO.,LTD.
Original Assignee
Yangtze University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangtze University filed Critical Yangtze University
Priority to CN201810707684.7A priority Critical patent/CN108975600B/en
Publication of CN108975600A publication Critical patent/CN108975600A/en
Application granted granted Critical
Publication of CN108975600B publication Critical patent/CN108975600B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • 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
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
    • 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
    • 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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

Abstract

A heavy oil sewage ground comprehensive treatment platform comprises a water collecting tank, a hydrocyclone, a medicine-adding dissolved air flotation tank, an electrocoagulation flotation tank, a first pH adjusting tank, a first intermediate water tank, a first lift pump, a primary filter tank, a first electromagnetic valve, an iron-carbon micro-electrolysis tank, a second pH adjusting tank, a first inclined plate sedimentation tank, a first three-dimensional electrochemical tank, a third adjusting tank, a second inclined plate sedimentation tank, a second intermediate water tank, a second lift pump, a secondary filter tank and an A/O-MBR device which are sequentially connected through a pipeline and form a sewage discharge route; the advantages are that: the comprehensive treatment platform can treat various sewage treatment routes, is convenient to use and reduces the operation cost; and the operation is convenient, the integration level is high, and the sewage treated by the comprehensive treatment platform reaches the primary standard in the comprehensive sewage discharge standard (GB 8978-1996).

Description

Ground comprehensive treatment platform for thickened oil sewage
Technical Field
The invention relates to a sewage treatment device, in particular to a heavy oil sewage ground comprehensive treatment platform.
Background
The heavy oil sewage has complex water quality, is not only polluted by crude oil, but also dissolves various salts and gases in the stratum in the high-temperature and high-pressure oil layer; during the oil extraction process, a lot of suspended solids are carried from the oil layer; various chemical agents are also doped in the oil gas gathering and transportation process; the heavy oil wastewater also contains a large amount of soluble organic matters. In a word, the heavy oil sewage is sewage with relatively complex water quality. In many areas of the world, the heavy oil sewage is recycled to a thermal recovery boiler or a reinjection stratum after certain treatment. On the offshore platform or other places, the thick oil sewage is generally directly discharged to the sea or to the surrounding environment after certain treatment, and the thick oil sewage is directly discharged to the outside, which causes serious pollution to the environment.
Most of heavy oil sewage in the current market is reinjected after general treatment, the quality of reinjection water cannot reach the standard, the mode of direct discharge of careful treatment is related to, and the current treatment mode not only influences the subsequent oil extraction process, but also cannot solve the fundamental problem.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the ground comprehensive treatment platform for the thick oil sewage, so that one comprehensive treatment platform can realize a plurality of sewage treatment routes, is convenient to use and reduces the operation cost;
a heavy oil sewage ground comprehensive treatment platform comprises a water collecting tank, a hydrocyclone, a medicine-adding dissolved air flotation tank, an electrocoagulation flotation tank, a first pH adjusting tank, a first intermediate water tank, a first lift pump, a primary filter tank, a first electromagnetic valve, an iron-carbon micro-electrolysis tank, a second pH adjusting tank, a first inclined plate sedimentation tank, a first three-dimensional electrochemical tank, a third adjusting tank, a second inclined plate sedimentation tank, a second intermediate water tank, a second lift pump, a secondary filter tank and an A/O-MBR device which are sequentially connected through a pipeline and form a sewage discharge route;
the comprehensive treatment platform also comprises an inclined plate oil separation tank, a second three-dimensional electrochemical pool, a third intermediate pool, a first high-pressure pump, a microfiltration membrane pool and a water reinjection pool, wherein a water inlet and a water outlet of the inclined plate oil separation tank are respectively communicated with the water collecting tank and the drug-added dissolved air floatation tank through pipelines, a water inlet and a water outlet of the second three-dimensional electrochemical pool are respectively communicated with the primary filter pool and the third pH adjusting tank through pipelines, a water inlet and a water outlet of the third intermediate pool are respectively communicated with the secondary filter pool and the first high-pressure pump through pipelines, water in the third intermediate pool is input into the microfiltration membrane pool through the first high-pressure pump and then flows into the water reinjection pool for reinjection, so that the water collecting tank, the inclined plate oil separation tank, the drug-added dissolved air floatation tank, the electrocoagulation membrane pool, the first pH adjusting tank, the first intermediate pool, the first lift pump, the primary filter pool and the second three-dimensional electrochemical pool, And a sewage reinjection line is formed among the third pH adjusting tank, the second inclined plate sedimentation tank, the second intermediate water tank, the second lifting pump, the second-stage filter tank, the third intermediate water tank, the first high-pressure pump, the microfiltration membrane tank and the reinjection water tank.
The invention relates to a heavy oil sewage ground comprehensive treatment platform, which has the advantages that:
compared with the prior art, the comprehensive treatment platform is different in that the comprehensive treatment platform can treat various sewage treatment routes, is convenient to use and reduces the operation cost; the operation is convenient, the integration level is high, the sewage treated by the comprehensive treatment platform reaches the first-level standard in the comprehensive sewage discharge standard (GB 8978-1996), and the reinjection water reaches the recommended index and analysis method for water quality of water injection of clastic rock oil reservoirs (SY/T5329-2012).
Drawings
FIG. 1 is a connection diagram of the structure of the present invention;
wherein: the single arrow indicates the sewage flow direction or sludge transport direction;
the device comprises a water collecting tank 1, a hydrocyclone 2, a medicine-adding dissolved air flotation tank 3, an electrocoagulation flotation tank 4, a first pH adjusting tank 5, a first intermediate water tank 6, a first lift pump 7, a primary filter tank 8, a first electromagnetic valve 9, an iron-carbon micro-electrolysis tank 10, a second pH adjusting tank 11, a first inclined plate sedimentation tank 12, a first three-dimensional electrochemical tank 13, a third pH adjusting tank 14, a second inclined plate sedimentation tank 15, a second intermediate water tank 16, a second lift pump 17 and a secondary filter tank 18;
an A/O-MBR device 19, an anaerobic tank 19A, an aerobic tank 19B and a membrane biological reaction tank 19C;
an inclined plate oil separation tank 20, a second three-dimensional electrochemical tank 21, a third intermediate water tank 22, a first high-pressure pump 23, a microfiltration membrane tank 24, a reinjection water tank 25, an ultraviolet disinfection pipe 26, a demulsifier stirring tank 27, a PAC stirring tank 28, a PAM stirring tank 29, and H2SO4Pool 30, NaOH pool 31, H2O2A pool 32, a second high-pressure pump 33, a discharge water pool 34, a sludge pool 35, a third lift pump 36 and a second electromagnetic valve 37.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A heavy oil sewage ground comprehensive treatment platform comprises a water collecting tank 1, a hydrocyclone 2, a medicine-adding dissolved air flotation tank 3, an electrocoagulation flotation tank 4, a first pH adjusting tank 5, a first intermediate water tank 6, a first lift pump 7, a primary filter tank 8, a first electromagnetic valve 9, an iron-carbon micro-electrolysis tank 10, a second pH adjusting tank 11, a first inclined plate sedimentation tank 12, a first three-dimensional electrochemical tank 13, a third pH adjusting tank 14, a second inclined plate sedimentation tank 15, a second intermediate water tank 16, a second lift pump 17, a secondary filter tank 18 and an A/O-MBR device 19 which are connected in sequence through pipelines and form a sewage discharge route;
the comprehensive treatment platform further comprises an inclined plate oil separation tank 20, a second three-dimensional electrochemical tank 21, a third intermediate water tank 22, a first high-pressure pump 23, a microfiltration membrane tank 24 and a water reinjection tank 25, wherein a water inlet and a water outlet of the inclined plate oil separation tank 20 are respectively communicated with the water collecting tank 1 and the medicine-adding dissolved air flotation tank 3 through pipelines, a water inlet and a water outlet of the second three-dimensional electrochemical tank 21 are respectively communicated with the primary filtering tank 8 and the third pH adjusting tank 14 through pipelines, a water inlet and a water outlet of the third intermediate water tank 22 are respectively communicated with the secondary filtering tank 18 and the first high-pressure pump 23 through pipelines, water in the third intermediate water tank 22 is input into the microfiltration membrane tank 24 through the first high-pressure pump 23 and then flows into the water reinjection tank 25 for reinjection, so that the water collecting tank 1, the inclined plate oil separation tank 20, the medicine-adding dissolved air flotation tank 3, the electrocoagulation flotation tank 4, the first pH adjusting tank 5, the first intermediate water tank, A sewage reinjection line is formed among the first lifting pump 7, the primary filter tank 8, the second three-dimensional electrochemical tank 21, the third pH adjusting tank 14, the second inclined plate sedimentation tank 15, the second intermediate water tank 16, the second lifting pump 17, the secondary filter tank 18, the third intermediate water tank 22, the first high-pressure pump 23, the microfiltration membrane tank 24 and the reinjection water tank 25.
Preferably, an ultraviolet disinfection tube 26 is further disposed between the microfiltration membrane pool 24 and the reinjection water pool 25 for disinfecting the outlet water of the microfiltration membrane pool 24.
Preferably, one inlet end of the chemical-adding dissolved air flotation tank 3 is further connected with outlets of the demulsifier agitation tank 27, the PAC agitation tank 28, and the PAM agitation tank 29 through pipelines, so that demulsifiers, PACs (polyaluminium chlorides), and PAMs (polyacrylamides) in the demulsifier agitation tank 27, the PAC agitation tank 28, and the PAM agitation tank 29 are all pumped into the chemical-adding dissolved air flotation tank 3, and are used for removing water in thick oil, removing colloids and fine suspended matters in wastewater to form flocculates, flocculating the fine flocculates into larger flocculates, and the like;
the first pH adjusting tank 5, the third pH adjusting tank 14 and a water inlet of the iron-carbon micro-electrolysis tank 10 are respectively connected with H2SO4Pool 30, NaOH pool 31, H2O2A tank 32 for feeding H2SO4、NaOH、H2O2The wastewater in the first pH adjusting tank 5 is adjusted to be acidic, the wastewater in the third pH adjusting tank 14 is adjusted to be neutral, and the wastewater in the iron-carbon micro-electrolysis tank 10 is disinfected by respectively adding the wastewater in the first pH adjusting tank 5, the third pH adjusting tank 14 and the iron-carbon micro-electrolysis tank 10 through pipelines.
Further, the A/O-MBR device 19 comprises an anaerobic tank 19A, an aerobic tank 19B and a membrane biological reaction tank 19C which are sequentially connected through a pipeline, the water inlet end of the anaerobic tank 19A is connected with the water outlet end of the secondary filtering tank 18, so that organic matters in the anaerobic tank 19A are hydrolyzed, acidified and methanated to remove organic matters in wastewater and improve the biodegradability of the wastewater, the wastewater enters the aerobic tank 19B, aerobic microorganisms grow and reproduce rapidly to treat structures of pollutants in the wastewater, and finally, the wastewater after aerobic treatment enters the membrane biological reaction tank 19C to intercept active sludge and macromolecular organic matters in the wastewater.
Preferably, the comprehensive treatment platform further comprises a second high-pressure pump 33 and a discharge water tank 34, wherein an inlet of the second high-pressure pump 33 is connected with a water outlet end of the membrane biological reaction tank 19C, so that the treated sewage is input into the discharge water tank 34 through the second high-pressure pump 33 to be discharged at a later stage.
Further, the comprehensive treatment platform further comprises a sludge tank 35, and the inlet end of the sludge tank 35 is connected with a sludge discharge port of the inclined plate oil separation tank 20, the medicine-adding dissolved air flotation tank 3, the electrocoagulation flotation tank 4, the first inclined plate sedimentation tank 12, the second inclined plate sedimentation tank 15, the iron-carbon micro-electrolysis tank 10, the second three-dimensional electrochemical tank 21, the anaerobic tank 19A, the aerobic tank 19B and the membrane biological reaction tank 19C through pipelines respectively, and is used for transporting sludge into the sludge tank 35.
A first liquid level meter (not shown in the figure) and a third lift pump 36 are arranged in the water collecting tank 1, so that after the thickened oil wastewater collected in the water collecting tank 1 reaches the calibrated liquid level of the first liquid level meter, the wastewater is transported to the hydrocyclone 2 or the inclined plate oil separation tank 20 through the third lift pump 36;
the electrocoagulation-floatation tank 4 is used for removing suspended matters and oil pollutants in the sewage;
a second liquid level meter (not shown in the figure) is arranged in the first intermediate water tank 6, so that the liquid level in the first intermediate water tank 6 is conveyed to the primary filtering tank 8 through the first lifting pump 7 when reaching a calibrated liquid level;
a third liquid level meter (not shown in the figure) is arranged in the second intermediate water tank 16, so that the liquid level in the second intermediate water tank 16 reaches a calibrated liquid level and is transported to a secondary filtering tank 18 through a second lifting pump 17;
a fourth liquid level meter (not shown in the figure) is arranged in the third intermediate water tank 22, so that when the liquid level in the third intermediate water tank 22 reaches a calibrated liquid level, the liquid is pumped into the microfiltration membrane tank 24 through the first high-pressure pump 23;
the lower part in the primary filter tank 8 is filled with quartz sand, the upper part is filled with anthracite, and the weight ratio of the quartz sand to the anthracite is 1: 1;
the iron-carbon micro-electrolysis cell 10 is used for converting macromolecular refractory organic matters into degradable and easily degradable micromolecular organic matters, wherein the fillers are iron shavings and carbon powder.
And a second electromagnetic valve 37 is arranged on a pipeline between the primary filter tank 8 and the second three-dimensional electrochemical cell 21.
Three-dimensional electrode reaction devices (not shown in the figure) are arranged in the first three-dimensional electrochemical pool 13 and the second three-dimensional electrochemical pool 21, and are used for avoiding the occurrence of short-circuit current, improving the current efficiency and the particle electrode repolarization, and improving the degradation efficiency of sewage.
The three-dimensional electrode reaction device is a prior art, namely a technical proposal with patent number 201510968150.6, and therefore, the detailed description is not provided here.
Example I treatment of wastewater discharge
1. After the water collecting tank 1 collects the thick oil wastewater, the third lift pump 36 pumps the raw water to the hydrocyclone 2 through the first liquid level meter when the liquid level is high, and the effluent flows into the chemical-adding dissolved gasA floating tank 3, during the reaction, the demulsifier, the PAC and the PAM in the demulsifier stirring tank 27, the PAC stirring tank 28 and the PAM stirring tank 29 are slowly added into the medicine-adding dissolved air floating tank 3 according to the dosage, the effluent water flows into the electric flocculation air floating tank 4 to further remove suspended matters and oil pollutants, so as to enter a first pH adjusting tank 5 in the pretreatment process, and H is added simultaneously2SO4H in the tank 302SO4For adjusting the sewage to acidity;
2. inputting the sewage treated in the step 1 into a first intermediate water tank 6, when the liquid level in the first intermediate water tank 6 reaches the calibration liquid level of a second liquid level meter, transporting the sewage to a first-stage filter tank 8 through a first lift pump 7, then flowing into an iron-carbon micro-electrolysis tank 10 (at the moment, opening a first electromagnetic valve 9, closing a second electromagnetic valve 37), and simultaneously adding H2O2H in the tank 322O2Coupling the organic matters to convert the macromolecular organic matters which are difficult to degrade into degradable and easily degradable micromolecular organic matters;
3. inputting the sewage treated in the step 2 into a second pH regulating tank 11 to regulate the pH value, and then flowing into a first inclined plate sedimentation tank 12 to remove mud generated in an iron-carbon micro-electrolysis tank 10, and then flowing into a first three-dimensional electrochemical tank 13 to further remove various organic pollutants;
4. the sewage treated in the step 3 enters a third pH adjusting tank 14, NaOH in an NaOH tank 31 is added into the third pH adjusting tank 14 to adjust the sewage to be neutral, then the sewage is input into a second inclined plate sedimentation tank 15 to remove substances such as mud, suspended matters and the like generated in a first three-dimensional electrochemical tank 13, then the sewage enters a second intermediate water tank 16, and when the liquid level in the second intermediate water tank 16 reaches the calibration liquid level of a third liquid level meter, the sewage is transported to a second-stage filtering tank 18 through a second lifting pump 17 (wherein the type and the arrangement of fillers are the same as those in a first-stage filtering tank 8);
5. the sewage treated in the step 4 flows into an A/O-MBR device 19, the temperature of the sewage treated by the first three-dimensional electrochemical tank 13 is between 35 and 50 ℃ due to the treatment of the first three-dimensional electrochemical tank 13, and the temperature of the sewage can be just maintained between 20 and 35 ℃ after the sewage is treated by the A/O-MBR device 19, so that the temperature has obvious advantages for biochemical treatment, the treatment efficiency of a biochemical system can be greatly improved, and the problem that the biochemical treatment temperature of the thick oil sewage is too low to reach the standard in the past is avoided; finally, the sewage treated by the A/O-MBR device 19 is pumped into a discharge water tank 34 by a second high-pressure pump 33, so that the sewage can reach the first-level standard of the comprehensive sewage discharge standard (GB 8978-1996) and can be discharged after reaching the standard; meanwhile, the sludge in the treatment line can be separately discharged to the sludge tank 35.
Example two, wastewater reinjection treatment
1. After the thickened oil wastewater is collected by the water collecting tank 1, the third lift pump 36 pumps raw water to an inclined plate oil separation sedimentation tank through the first liquid level meter when the liquid level is high, the effluent of the third lift pump flows into the medicine-adding dissolved air floatation tank 3, the demulsifier stirring tank 27, the PAC stirring tank 28, the demulsifier in the PAM stirring tank 29, the PAC and the PAM are slowly added into the medicine-adding dissolved air floatation tank 3 according to the dosage during the reaction, the effluent of the third lift pump flows into the electric flocculation floatation tank 4 to further remove suspended matters and oil pollutants, so that the third lift pump enters the first pH adjusting tank 5 during the pretreatment process, and H is added simultaneously2SO4H in the tank 302SO4For adjusting the sewage to acidity;
2. inputting the sewage treated in the step (1) into a first intermediate water tank 6, and when the liquid level in the first intermediate water tank 6 reaches the calibration liquid level of a second liquid level meter, transporting the sewage to a primary filtering tank 8 through a first lifting pump 7, and then flowing into a second three-dimensional electrochemical tank 21 (at the moment, a first electromagnetic valve 9 is closed, and a second electromagnetic valve 37 is opened) so as to remove various refractory organic pollutants;
3. inputting the sewage treated in the step 2 into a third pH adjusting tank 14, simultaneously adding NaOH in an NaOH tank 31 into the third pH adjusting tank 14 to adjust the sewage to be neutral, inputting the sewage into a second inclined plate sedimentation tank 15 to remove substances such as mud, suspended matters and the like generated in a first three-dimensional electrochemical tank 13, then inputting the sewage into a second intermediate water tank 16, and when the liquid level in the second intermediate water tank 16 reaches the calibrated liquid level of a third liquid level meter, transporting the sewage into a second-stage filtering tank 18 through a second lifting pump 17 (wherein the type and the arrangement of fillers are the same as those in a first-stage filtering tank 8);
4. the sewage treated in the step 3 flows into a third intermediate water tank 22, and when the liquid level in the third intermediate water tank 22 reaches the calibration liquid level of a fourth liquid level meter, the sewage is pumped into a microfiltration membrane tank 24 through a first high-pressure pump 23;
5. the sewage treated in the step 4 is disinfected by the ultraviolet disinfection pipe 26 to remove harmful microorganisms, so that the sewage can reach the reinjection standard in the clastic rock oil reservoir water injection water quality recommendation index and analysis method (SY/T5329-2012), and is finally input into the reinjection pool 25 for reinjection, and simultaneously, the sludge in the treatment route can be independently discharged to the sludge pool 35.
EXAMPLE III other treatment
1. After the thickened oil wastewater is collected by the water collecting tank 1, the raw water is pumped to the hydrocyclone 2 by the third lift pump 36 through the first liquid level meter when the liquid level is high, the effluent flows into the medicine-adding dissolved air floatation tank 3, the demulsifier stirring tank 27, the PAC stirring tank 28, the demulsifier, the PAC and the PAM in the PAM stirring tank 29 are slowly added into the medicine-adding dissolved air floatation tank 3 according to the dosage during the reaction, the effluent flows into the electric flocculation air floatation tank 4 to further remove suspended matters and oil pollutants, so that the effluent enters the first pH adjusting tank 5 during the pretreatment process, and H is added simultaneously2SO4H in the tank 302SO4For adjusting the sewage to acidity;
2. inputting the sewage treated in the step 1 into a first intermediate water tank 6, when the liquid level in the first intermediate water tank 6 reaches the calibration liquid level of a second liquid level meter, transporting the sewage to a primary filtering tank 8 through a first lifting pump 7, and opening a second electromagnetic valve 37 (at the moment, closing a first electromagnetic valve 9) to enable the sewage in the primary filtering tank 8 to flow into a second three-dimensional electrochemical tank 21 so as to remove various organic pollutants difficult to degrade;
3. inputting the sewage treated in the step 2 into a third pH adjusting tank 14, simultaneously adding NaOH in an NaOH tank 31 into the third pH adjusting tank 14 to adjust the sewage to be neutral, inputting the sewage into a second inclined plate sedimentation tank 15 to remove substances such as mud, suspended matters and the like generated in a first three-dimensional electrochemical tank 13, then inputting the sewage into a second intermediate water tank 16, and when the liquid level in the second intermediate water tank 16 reaches the calibrated liquid level of a third liquid level meter, transporting the sewage into a second-stage filtering tank 18 through a second lifting pump 17 (wherein the type and the arrangement of fillers are the same as those in a first-stage filtering tank 8);
4. the sewage treated in the step 3 flows into an A/O-MBR device 19, the temperature of the sewage treated by the first three-dimensional electrochemical tank 13 is between 35 and 50 ℃ due to the treatment of the first three-dimensional electrochemical tank 13, and the temperature of the sewage can be just maintained between 20 and 35 ℃ after the sewage is treated by the A/O-MBR device 19, so that the temperature has obvious advantages for biochemical treatment, the treatment efficiency of a biochemical system can be greatly improved, and the problem that the biochemical treatment temperature of the thick oil sewage is too low to reach the standard in the past is avoided; finally, the sewage treated by the A/O-MBR device 19 is pumped into a discharge water tank 34 by a second high-pressure pump 33, so that the sewage can reach the first-level standard of the comprehensive sewage discharge standard (GB 8978-1996) and can be discharged after reaching the standard; meanwhile, the sludge in the treatment line can be separately discharged to the sludge tank 35.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The heavy oil sewage ground comprehensive treatment platform is characterized in that: the device comprises a water collecting tank (1), a hydrocyclone (2), a medicine-adding dissolved air flotation tank (3), an electrocoagulation flotation tank (4), a first pH adjusting tank (5), a first intermediate water tank (6), a first lift pump (7), a first-stage filter tank (8), a first electromagnetic valve (9), an iron-carbon micro-electrolysis tank (10), a second pH adjusting tank (11), a first inclined plate sedimentation tank (12), a first three-dimensional electrochemical tank (13), a third pH adjusting tank (14), a second inclined plate sedimentation tank (15), a second intermediate water tank (16), a second lift pump (17), a second-stage filter tank (18) and an A/O-MBR device (19) which are sequentially connected through pipelines and form a sewage discharge route;
the comprehensive treatment platform further comprises an inclined plate oil separation tank (20), a second three-dimensional electrochemical pool (21), a third intermediate water tank (22), a first high-pressure pump (23), a microfiltration membrane pool (24) and a water return pool (25), wherein a water inlet and a water outlet of the inclined plate oil separation tank (20) are respectively communicated with the water collecting tank (1) and the medicine-adding dissolved air flotation tank (3) through pipelines, a water inlet and a water outlet of the second three-dimensional electrochemical pool (21) are respectively communicated with the primary filtering tank (8) and the third pH adjusting tank (14) through pipelines, a water inlet and a water outlet of the third intermediate water tank (22) are respectively communicated with the secondary filtering tank (18) and the first high-pressure pump (23), water in the third intermediate water tank (22) is input into the microfiltration membrane pool (24) through the first high-pressure pump (23) and then flows into the water return pool (25) for water return, so that the water collecting tank (1) and the water return pool (25, The sewage treatment device comprises an inclined plate oil separation tank (20), a medicine-adding dissolved air flotation tank (3), an electric flocculation flotation tank (4), a first pH adjusting tank (5), a first intermediate water tank (6), a first lift pump (7), a first-stage filter tank (8), a second three-dimensional electrochemical tank (21), a third pH adjusting tank (14), a second inclined plate sedimentation tank (15), a second intermediate water tank (16), a second lift pump (17), a second-stage filter tank (18), a third intermediate water tank (22), a first high-pressure pump (23), a microfiltration membrane tank (24) and a water return tank (25), wherein a sewage return line is formed among the inclined plate oil separation tank, the medicine-adding dissolved air flotation tank (3), the electric flocculation flotation.
2. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: an ultraviolet disinfection tube (26) is arranged between the microfiltration membrane pool (24) and the water return injection pool (25) and is used for disinfecting the effluent of the microfiltration membrane pool (24).
3. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: an inlet end of the medicine-adding dissolved air flotation tank (3) is also respectively connected with outlets of the demulsifier stirring tank (27), the PAC stirring tank (28) and the PAM stirring tank (29) through pipelines, so that demulsifiers, PAC and PAM in the demulsifier stirring tank (27), the PAC stirring tank (28) and the PAM stirring tank (29) are pumped into the medicine-adding dissolved air flotation tank (3).
4. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: the water inlets of the first pH adjusting tank (5), the third pH adjusting tank (14) and the iron-carbon micro-electrolysis tank (10) are respectively connected with H through pipelines2SO4Pool (30), NaOH pool (31), H2O2A pool (32) for mixing H2SO4、NaOH、H2O2Respectively added into a first pH adjusting tank (5), a third pH adjusting tank (14) and an iron-carbon micro-electrolysis tank (10) to adjust the sewage in the first pH adjusting tank (5)The sewage in the acidic third pH adjusting tank (14) is adjusted to be neutral, and the sewage in the iron-carbon micro-electrolysis tank (10) is disinfected.
5. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: the lower part in the primary filter tank (8) is filled with quartz sand, the upper part is filled with anthracite, and the weight ratio of the quartz sand to the anthracite is 1: 1.
6. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: a second electromagnetic valve (37) is arranged on a pipeline between the primary filtering tank (8) and the second three-dimensional electrochemical tank (21).
7. The heavy oil sewage ground comprehensive treatment platform of claim 1, characterized in that: three-dimensional electrode reaction devices are arranged in the first three-dimensional electrochemical pool (13) and the second three-dimensional electrochemical pool (21) and are used for controlling current short circuit and sewage degradation.
8. The ground comprehensive treatment platform for the thick oil sewage according to any one of claims 1 to 7, characterized in that: the A/O-MBR device (19) comprises an anaerobic tank (19A), an aerobic tank (19B) and a membrane biological reaction tank (19C) which are sequentially connected through a pipeline, and the water inlet end of the anaerobic tank (19A) is connected with the water outlet end of the secondary filtering tank (18).
9. The heavy oil sewage ground comprehensive treatment platform of claim 8, characterized in that: the comprehensive treatment platform also comprises a second high-pressure pump (33) and a discharge water tank (34), wherein the inlet of the second high-pressure pump (33) is connected with a water outlet of the membrane biological reaction tank (19C), so that the treated sewage is input into the discharge water tank (34) through the second high-pressure pump (33).
10. The heavy oil sewage ground comprehensive treatment platform of claim 8, characterized in that: the comprehensive treatment platform further comprises a sludge tank (35), wherein the inlet end of the sludge tank (35) is connected with a sludge outlet of the inclined plate oil separation tank (20), the medicine-adding dissolved air flotation tank (3), the electrocoagulation flotation tank (4), the first inclined plate sedimentation tank (12), the second inclined plate sedimentation tank (15), the iron-carbon micro-electrolysis tank (10), the second three-dimensional electrochemical tank (21), the anaerobic tank (19A), the aerobic tank (19B) and the membrane biological reaction tank (19C) through pipelines respectively, and the sludge is transported into the sludge tank (35).
CN201810707684.7A 2018-07-02 2018-07-02 Ground comprehensive treatment platform for thickened oil sewage Active CN108975600B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810707684.7A CN108975600B (en) 2018-07-02 2018-07-02 Ground comprehensive treatment platform for thickened oil sewage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810707684.7A CN108975600B (en) 2018-07-02 2018-07-02 Ground comprehensive treatment platform for thickened oil sewage

Publications (2)

Publication Number Publication Date
CN108975600A CN108975600A (en) 2018-12-11
CN108975600B true CN108975600B (en) 2021-05-11

Family

ID=64539389

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810707684.7A Active CN108975600B (en) 2018-07-02 2018-07-02 Ground comprehensive treatment platform for thickened oil sewage

Country Status (1)

Country Link
CN (1) CN108975600B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112499885A (en) * 2020-10-21 2021-03-16 南京江岛环境科技研究院有限公司 System and method for treating preparation wastewater by using multiphase multidimensional electrolysis pretreatment process + A/O + MBR
CN113264630B (en) * 2021-05-18 2022-06-24 长江大学 Fracturing flow-back fluid purification treatment system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748860A2 (en) * 1995-06-14 1996-12-18 Tonen Corporation Demulsification by microorganisms
CN105174657A (en) * 2015-10-20 2015-12-23 波鹰(厦门)科技有限公司 Treatment device and method for oil extraction wastewater
CN105314796A (en) * 2015-11-16 2016-02-10 克拉玛依市弘峰科技有限公司 Oil field high-salinity and oil-bearing wastewater treatment technology
CN206142964U (en) * 2016-09-18 2017-05-03 广东智环创新环境科技有限公司 Integration high concentration sewage advanced oxidation treatment equipment
CN106854024A (en) * 2017-03-02 2017-06-16 陕西实诺能源技术开发有限公司 A kind of oil field, gas field fracturing outlet liquid processing system and processing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748860A2 (en) * 1995-06-14 1996-12-18 Tonen Corporation Demulsification by microorganisms
CN105174657A (en) * 2015-10-20 2015-12-23 波鹰(厦门)科技有限公司 Treatment device and method for oil extraction wastewater
CN105314796A (en) * 2015-11-16 2016-02-10 克拉玛依市弘峰科技有限公司 Oil field high-salinity and oil-bearing wastewater treatment technology
CN206142964U (en) * 2016-09-18 2017-05-03 广东智环创新环境科技有限公司 Integration high concentration sewage advanced oxidation treatment equipment
CN106854024A (en) * 2017-03-02 2017-06-16 陕西实诺能源技术开发有限公司 A kind of oil field, gas field fracturing outlet liquid processing system and processing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
A/O-MBR工艺处理油页岩干馏废水的试验研究;肖丽光等;《工业用水与废水》;20140428;第45卷(第2期);第23-26页 *

Also Published As

Publication number Publication date
CN108975600A (en) 2018-12-11

Similar Documents

Publication Publication Date Title
CN108975601B (en) Ground comprehensive treatment process for thickened oil sewage
CN104355478B (en) A kind of dyeing and printing sewage processes system
CN106315934A (en) Experiment device for treatment of fracturing flow-back fluid
CN101428946A (en) Integrated treatment process and equipment for domestic wastewater
CN104402172A (en) Industrial wastewater treatment method
CN103523966A (en) Advanced wastewater treatment system and treatment method
CN101898854A (en) Method and device for treatment of high-sulfur content and low-permeability oil reservoir produced wastewater
CN108975600B (en) Ground comprehensive treatment platform for thickened oil sewage
CN102050529B (en) Immersed water treatment device of inner circulating membrane coagulation reactor
CN205313336U (en) Flowing back processing system is returned to multi -functional integrated oil field fracturing of sled dress formula
CN211226778U (en) Sweetleaf chrysanthemum processing effluent disposal system
CN107365017A (en) domestic sewage treatment process
CN107265815A (en) Sewage treatment process in septic tank
CN105948406A (en) Urban sewage treatment system
CN207451862U (en) A kind of sewage-treatment plant
CN213446736U (en) Oil field waste water treatment device
CN202785898U (en) Device for treating and recycling wastewater from processing of coal tar
Ghawi et al. Use environmentally friendly hydraulic power to design a hydraulic rapid mixing basin in the drinking water treatment plant
CN115321744A (en) Gas field wastewater treatment method
CN213771732U (en) High-nitrate wastewater pretreatment system for coal-to-ethylene glycol
CN114560579A (en) System and process for synchronously treating produced water and fracturing flowback fluid
CN201099648Y (en) Low infiltration oil extraction sewage processor for oilfield reinjection
CN207031138U (en) A kind of waste liquid of drilling chemistry and film coupled processing system
CN109052753B (en) Reinjection water treatment system and reinjection water treatment method
CN201099649Y (en) Drilling mud waste water treating device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20211105

Address after: 432600 Liangji South Road, industrial park, Anlu Economic Development Zone, Xiaogan City, Hubei Province

Patentee after: HUBEI JINRI ECOLOGICAL ENERGY CO.,LTD.

Address before: 434023 No. 1 South Ring Road, Jingzhou District, Hubei, Jingzhou

Patentee before: Yangtze University