CN115259337A - High-polymer-content heavy oil sewage deep aeration treatment system - Google Patents
High-polymer-content heavy oil sewage deep aeration treatment system Download PDFInfo
- Publication number
- CN115259337A CN115259337A CN202110482038.7A CN202110482038A CN115259337A CN 115259337 A CN115259337 A CN 115259337A CN 202110482038 A CN202110482038 A CN 202110482038A CN 115259337 A CN115259337 A CN 115259337A
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- aeration
- pipeline
- water outlet
- sewage
- sewage discharge
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- 238000005273 aeration Methods 0.000 title claims abstract description 92
- 239000010865 sewage Substances 0.000 title claims abstract description 67
- 239000000295 fuel oil Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000011001 backwashing Methods 0.000 claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 23
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 13
- 238000007790 scraping Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Classifications
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F7/00—Aeration of stretches of water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a deep aeration treatment system for high polymer-bearing heavy oil sewage, belonging to the technical field of sewage treatment. The pre-dewatering tank is connected with a buffer tank, the buffer tank is connected with an aeration device through a water delivery pump, and the aeration device is connected with a deslagging device, a pollution discharge device and a back washing device. The beneficial effects of the invention are: the sewage containing high polymer heavy oil is aerated deeply in the aeration tanks, the polymer is continuously oxidized and degraded in the aeration process, the oil residue and the sludge are separated, discharged and collected, the aeration tanks are aerated continuously and alternately in a static mode, and when the aeration devices need to be cleaned, the backwashing can be carried out through the backwashing devices in the running gaps of the aeration devices, so that the continuous running of the whole system is not influenced. The invention changes the polymer-containing sewage treatment process mode from the source, effectively ensures the treatment effect, solves the problem of blockage of a filtration system and ensures the production operation.
Description
Technical Field
The invention relates to a deep aeration treatment system for high polymer-bearing heavy oil sewage, belonging to the technical field of sewage treatment.
Background
The oil field heavy oil chemical flooding sewage contains various polymers, so that a filtering system is easy to block, and the polymer-containing sewage has high treatment cost, poor treatment effect, limited discharge and difficult recycling.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide the deep aeration treatment system for the sewage with high polymer content of the thickened oil, which effectively ensures the treatment effect, solves the problem of blockage of a filtering system and ensures the normal operation of production.
The technical scheme of the invention is as follows: the deep aeration treatment system for the sewage containing high polymer heavy oil comprises a pre-dewatering tank, a buffer tank, a water delivery pump, an aeration device, a deslagging device, a sewage discharging device and a back washing device.
Aeration equipment includes, a plurality of parallelly connected aeration tank, and aeration tank water inlet and water outlet department are equipped with the pneumatic valve of intaking and go out the water pneumatic valve respectively, are equipped with the aeration pipe in the aeration tank, and the aeration pipe is through aeration pipe connection air-blower, be equipped with the level gauge b of being connected with control system in the aeration tank.
The sediment device includes, sets up the emulsified oil crane span structure in the aeration tank, is equipped with on the emulsified oil crane span structure and scrapes the sediment machine, and the overflow launder moves through with aeration tank inner top, the scraper blade of scraping the sediment machine the overflow launder, the sediment pipeline is connected to the overflow launder bottom, and the sediment pipeline extends to the sump oil pond through the sediment pump, be equipped with the sediment valve on the sediment pipeline.
And the buffer tank is provided with a liquid level meter a connected with the control system.
The sewage discharge device comprises a sewage discharge pipeline connected to the bottom of the aeration tank, wherein the tail end of the sewage discharge pipeline is provided with a sewage discharge branch pipeline a and a sewage discharge branch pipeline b which are connected in parallel, a sewage discharge pump and a sewage discharge control valve a are arranged on the sewage discharge branch pipeline a, a sewage discharge control valve b is arranged on the sewage discharge branch pipeline b, and the outlets of the sewage discharge branch pipeline a and the sewage discharge branch pipeline b are connected with a sludge pond.
The water outlet pneumatic valve is positioned on the water outlet pipeline, the tail end of the water outlet pipeline is provided with a water outlet branch pipeline a and a water outlet branch pipeline b which are connected in parallel, the water outlet branch pipeline a and the water outlet branch pipeline b are respectively provided with a lift pump a and a lift pump b, the water outlet pipeline a and the water outlet branch pipeline b are respectively provided with a water outlet control valve, and the tail ends of the water outlet branch pipeline a and the water outlet branch pipeline b are connected with an underground pond.
The back washing device comprises a back washing pipe positioned at the bottom in the aeration tank, the back washing pipe is connected with a back washing pipeline, a back washing control valve is arranged on the back washing pipeline, and the tail end of the back washing pipeline is connected with a water outlet pipeline a.
The invention has the beneficial effects that: the sewage containing high polymer heavy oil is aerated deeply in the aeration tanks, the polymer is continuously oxidized and degraded in the aeration process, the oil residue and the sludge are separated, discharged and collected, the aeration tanks are aerated continuously and alternately in a static mode, and when the aeration devices need to be cleaned, the backwashing can be carried out through the backwashing devices in the running gaps of the aeration devices, so that the continuous running of the whole system is not influenced. The invention changes the polymer-containing sewage treatment process mode from the source, effectively ensures the treatment effect, solves the problem of blockage of a filter system and ensures the production operation.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
The reference numbers in the figures are as follows: 1. the device comprises a pre-dewatering tank, a2 buffer tank, a2.1 liquid level meter a, a 3 water conveying pump, a4.1 aeration tank, a 4.2 water inlet pneumatic valve, a 4.3 water outlet pneumatic valve, a 4.4 aeration pipe, a 4.5 aeration pipeline, a 4.6 air blower, a 4.7 liquid level meter b, a 4.8 water outlet pipeline, a4.9 water outlet pipeline a, a 4.10 water outlet pipeline b, a4.11 lifting pump a, a 4.12 lifting pump b, a 4.13 underground tank, a 4.14 water outlet control valve, a 5.1 emulsified oil emulsion bridge frame, a 5.2 slag scraper, a 5.3 slag discharge pipeline, a 5.4 slag discharge pump, a 5.5 oil sump, a 5.6 slag discharge valve, a 6.1 sewage discharge pipeline, a6.2 sewage discharge control valve a, a 6.3 sewage discharge pump, a 6.4 sewage discharge control valve b, a6.5 sewage discharge pipeline a, a sewage discharge pipeline 6.6.3 sewage discharge valve b, a backwash pipeline 7.7 back flush pipeline, a back flush control valve, a back flush pipeline, a back flush control valve, and a back flush control pipeline.
Detailed Description
The invention is further illustrated with reference to figure 1:
a high polymer heavy oil sewage deep aeration treatment system comprises a pre-dewatering tank 1, a buffer tank 2, a water pump 3, an aeration device, a deslagging device, a sewage discharging device and a back washing device.
The aeration device comprises a plurality of aeration tanks 4.1 connected in parallel, wherein a water inlet and a water outlet of each aeration tank 4.1 are respectively provided with a water inlet pneumatic valve 4.2 and a water outlet pneumatic valve 4.3, an aeration pipe 4.4 is arranged in each aeration tank 4.1, the aeration pipe 4.4 is connected with an air blower 4.6 through an aeration pipeline 4.5, and a liquid level meter b4.7 connected with a control system is arranged in each aeration tank 4.1.
The sediment device includes, sets up the emulsified oil crane span structure 5.1 in aeration tank 4.1, is equipped with on the emulsified oil crane span structure 5.1 and scrapes sediment machine 5.2, and the top intercommunication in overflow launder and aeration tank 4.1 scrapes the scraper blade of sediment machine 5.2 and moves through the overflow launder, the connection of overflow launder bottom is arranged sediment pipeline 5.3, arranges sediment pipeline 5.3 and extends to sump oil tank 5.5 through slag discharge pump 5.4, arrange and be equipped with slag discharge valve 5.6 on the sediment pipeline 5.3.
And a liquid level meter a2.1 connected with the control system is arranged on the buffer tank 2.
The blowdown device comprises a blowdown pipeline 6.1 connected to the bottom of the aeration tank 4.1, the tail end of the blowdown pipeline 6.1 is provided with a blowdown branch pipeline a6.5 and a blowdown branch pipeline b6.6 which are connected in parallel, a blowdown pump 6.3 and a blowdown control valve a6.2 are arranged on the blowdown branch pipeline a6.5, a blowdown control valve b6.4 is arranged on the blowdown branch pipeline b6.6, and an outlet of the blowdown branch pipeline a6.5 and an outlet of the blowdown branch pipeline b6.6 are connected with a sludge pond.
The water outlet pneumatic valve 4.3 is positioned on the water outlet pipeline 4.8, the tail end of the water outlet pipeline 4.8 is provided with a water outlet branch pipeline a4.9 and a water outlet branch pipeline b4.10 which are connected in parallel, the water outlet branch pipeline a4.9 and the water outlet branch pipeline b4.10 are respectively provided with a lift pump a4.11 and a lift pump b4.12, the water outlet branch pipeline a4.9 and the water outlet branch pipeline b4.10 are respectively provided with a water outlet control valve 4.14, and the tail ends of the water outlet branch pipeline a4.9 and the water outlet branch pipeline b4.10 are connected with an underground pool 4.13.
The back washing device comprises a back washing pipe 7.1 positioned at the bottom in the aeration tank 4.1, the back washing pipe 7.1 is connected with a back washing pipeline 7.2, a back washing control valve 7.3 is arranged on the back washing pipeline 7.2, and the tail end of the back washing pipeline 7.2 is connected with a water outlet pipeline a4.9.
The working process of the invention is as follows:
1) Sewage enters the buffer tank 2 from an inlet, and after reaching the buffer liquid level, the water inlet pneumatic valve 4.2 of the aeration tank 4.1 is linked to be opened, the water delivery pump 3 is opened, and the sewage is pumped into the aeration tank 4.1 by the water delivery pump 3; 2) Dense aeration pipes 4.4 are distributed in the aeration tank 4.1, when the first aeration tank 4.1 reaches a high set liquid level, the blower 4.6 and the slag discharge pump 5.4 are linked to be started, the blower 4.6 blows air to the aeration tank 4.11, the water inlet pneumatic valve 4.2 is closed, the water inlet pneumatic valve of the second aeration tank is opened, and the sewage in the buffer tank 2 is pumped into the second aeration tank by the water delivery pump 3; 3) The blower 4.6 can control the aeration intensity through frequency conversion, the aeration intensity can be determined by the sewage quality parameters, the polymer is continuously oxidized and degraded in the aeration process, when the molecular weight reaches a certain range, the polymer is adsorbed with suspended matters and an emulsified oil bridge in the sewage, waste oil and waste residues generated in the aeration process float on the surface and are scraped into an overflow groove by a residue scraper 5.2, and a residue discharge pump 5.4 finishes residue discharge; 4) When the aeration reaches the set time, the water outlet pneumatic valve 4.3 is opened, the lifting pump 4.9 is started, and the treated sewage is discharged from the outlet. Similarly, when the second aeration tank reaches a high liquid level, the automatic control system controls the sewage to enter the third aeration tank, the second aeration tank completes aeration, slag scraping and water discharging actions, and the three aeration tanks continuously alternate with each other to perform static aeration, so that the whole system continuously operates. The equipment is provided with a back washing and sewage discharging device, when the bottom of the equipment is accumulated with excessive silt or impurities to influence the treatment effect, a valve on a back washing pipeline can be manually opened, a lifting pump is started through a manual program to realize the back washing of the equipment, and the back washing sewage is discharged into a sump oil tank through a sludge discharge pump.
The equipment is provided with a PLC control cabinet, and a control system in the control cabinet is connected with a liquid level meter a2.1, a liquid level meter b4.7, a water inlet pneumatic valve 4.2, a water outlet pneumatic valve 4.3, a water delivery pump 3, an air blower 4.6, a slag discharge valve 5.6 and a lift pump. The water delivery pump 3 is linked with the liquid level meter a2.1, and the starting and stopping liquid level of the water delivery pump 3 and the working frequency of the water delivery pump 3 can be set; 4.6 of the blast blower, 5.6 of the slag discharging valve are linked with the level gauge b4.7, can set up the level gauge b4.7 liquid level height that 4.6 of the blast blower, 5.6 of the slag discharging valve start automatically, run time, after reaching the aeration time, the control cabinet controls 4.6 of the blast blower, 5.6 of the slag discharging valve to close, start the lift pump at the same time.
The invention can achieve the following effects:
under the condition that the oil content of the electrically dehydrated tap water is 200-500 mg/L, the oil content of the aerated effluent is less than 28mg/L through deep aeration process treatment (without adding drugs), and the requirement of equipment assessment index is met (less than 30 mg/L); the oil content of the filtered sewage is less than 14mg/L, and the requirement of special technical assessment index (less than 15 mg/L) is met.
Under the condition of the incoming water with the suspended solid content of 150-530 mg/L of the electrically dehydrated incoming water, the suspended solid content of the aerated outgoing water is less than 26mg/L through deep aeration process treatment (without adding drugs), and the requirement of equipment assessment index (less than or equal to 30 mg/L) is met; the suspended solid content after filtration is less than 15mg/L, and the requirement of special technical assessment index (less than or equal to 15 mg/L) is met. Under the condition of water supply with the oil content of 200-700 mg/L and the suspended solid content of 200-600 mg/L of the electric dehydration water, the deep aeration process treatment (without adding medicine) is carried out, and the oil content and the suspended solid content of the aerated effluent are less than 20mg/L; the oil content and the suspended solid content of the filtered sewage are both less than 12mg/L.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The deep aeration treatment system for the sewage containing high polymer heavy oil is characterized in that a pre-dewatering tank (1) is connected with a buffer tank (2), the buffer tank (2) is connected with an aeration device through a water delivery pump (3), and the aeration device is connected with a slag discharge device, a sewage discharge device and a back washing device.
2. The deep aeration treatment system for the sewage containing high polymer heavy oil according to claim 1, wherein the aeration device comprises a plurality of aeration tanks (4.1) connected in parallel, a water inlet pneumatic valve (4.2) and a water outlet pneumatic valve (4.3) are respectively arranged at a water inlet and a water outlet of each aeration tank (4.1), aeration pipes (4.4) are arranged in the aeration tanks (4.1), the aeration pipes (4.4) are connected with an air blower (4.6) through aeration pipelines (4.5), and liquid level meters b (4.7) connected with a control system are arranged in the aeration tanks (4.1).
3. The deep aeration treatment system for the sewage containing high polymer heavy oil according to claim 2, wherein the slag discharging device comprises an emulsified oil bridge (5.1) arranged in the aeration tank (4.1), a slag scraping machine (5.2) is arranged on the emulsified oil bridge (5.1), an overflow groove is communicated with the top of the aeration tank (4.1), a scraping plate of the slag scraping machine (5.2) moves through the overflow groove, the bottom of the overflow groove is connected with a slag discharging pipeline (5.3), the slag discharging pipeline (5.3) extends to the sump (5.5) through a slag discharging pump (5.4), and a slag discharging valve (5.6) is arranged on the slag discharging pipeline (5.3).
4. The deep aeration treatment system for sewage containing high polymer heavy oil according to claim 2, characterized in that a liquid level meter a (2.1) connected with the control system is arranged on the buffer tank (2).
5. The deep aeration treatment system for the sewage containing high polymer content heavy oil according to claim 2, wherein the sewage discharge device comprises a sewage discharge pipeline (6.1) connected to the bottom of the aeration tank (4.1), a sewage discharge branch pipeline a (6.5) and a sewage discharge branch pipeline b (6.6) which are connected in parallel are arranged at the tail end of the sewage discharge pipeline (6.1), a sewage discharge pump (6.3) and a sewage discharge control valve a (6.2) are arranged on the sewage discharge branch pipeline a (6.5), a sewage discharge control valve b (6.4) is arranged on the sewage discharge branch pipeline b (6.6), and the outlets of the sewage discharge branch pipeline a (6.5) and the sewage discharge branch pipeline b (6.6) are connected with a sludge pond.
6. The deep aeration treatment system for the sewage containing high polymer and heavy oil according to claim 2, wherein the water outlet pneumatic valve (4.3) is positioned on a water outlet pipeline (4.8), a water outlet pipeline a (4.9) and a water outlet pipeline b (4.10) which are connected in parallel are arranged at the tail end of the water outlet pipeline (4.8), a lift pump a (4.11) and a lift pump b (4.12) are respectively arranged on the water outlet pipeline a (4.9) and the water outlet pipeline b (4.10), water outlet valves (4.14) are respectively arranged on the water outlet pipeline a (4.9) and the water outlet pipeline b (4.10), and the tail ends of the water outlet pipeline a (4.9) and the water outlet pipeline b (4.10) are connected with an underground pool (4.13).
7. The deep aeration treatment system for the sewage containing high polymer and heavy oil according to claim 6, wherein the backwashing device comprises a backwashing pipe (7.1) positioned at the bottom in the aeration tank (4.1), the backwashing pipe (7.1) is connected with a backwashing pipeline (7.2), a backwashing control valve (7.3) is arranged on the backwashing pipeline (7.2), and the tail end of the backwashing pipeline (7.2) is connected with a moisture outlet pipeline a (4.9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110482038.7A CN115259337A (en) | 2021-04-30 | 2021-04-30 | High-polymer-content heavy oil sewage deep aeration treatment system |
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| CN202110482038.7A CN115259337A (en) | 2021-04-30 | 2021-04-30 | High-polymer-content heavy oil sewage deep aeration treatment system |
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