CN208327758U - A kind of petrochemical wastewater processing system - Google Patents
A kind of petrochemical wastewater processing system Download PDFInfo
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- CN208327758U CN208327758U CN201821337901.XU CN201821337901U CN208327758U CN 208327758 U CN208327758 U CN 208327758U CN 201821337901 U CN201821337901 U CN 201821337901U CN 208327758 U CN208327758 U CN 208327758U
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Abstract
The utility model provides a kind of petrochemical wastewater processing system, corresponding system includes to adjust oil removing pot, load coagulation oil expeller, coagulation-flocculation flotation tank, A/O biochemistry pool, the devices such as secondary sedimentation tank, high efficiency clarification tank, preceding ozone contact tank, biological aerated filter and clear water reserviors, enhance front deoiling effect, and increase the novel process combined method " ozone contact+biological aerated filter " of advanced treating, it can reduce the COD and petroleum content in waste water, oil removing, COD removal effect are enhanced, while eliminating most NH3- N, TN, sulfide, volatile phenol and SS, meet emission request, and petrochemical wastewater has been effectively treated, and ensure that stable water outlet is up to standard；The system both can have been created according to circumstances can also be stable through original processing system upgrading, effectively reduces construction cost, operating cost.
Description
Technical field
The utility model relates to water treatment fields, and in particular to a kind of petrochemical wastewater processing system.
Background technique
Petrochemical industry is the pillar industries of the national economy, and with the rapid development of our country's economy, consumption of petroleum amount is constantly climbed
It rises, petrochemical industry production scale constantly expands, and grade is constantly promoted, and generated petrochemical wastewater water quality, which is presented, to be complicated, multiplicity
Change, processing difficulty also continues to increase.Therefore, reasonable, effective treatment process is developed, is to meet people constantly to propose environmental requirement
High critical path.Petrochemical industry is processed by a series of refinings, fractionation, cracking, synthesis etc. mainly using petroleum as raw material
Journey generates heavy oil, light oil, by-product gas etc., and further reaction synthesizes various organic chemistry products.What is generated in production process is useless
Water water quality, water fluctuation is larger, and pollutant concentration is high, difficult to degrade, and more poisonous and harmful substance, mainly includes various petroleum
Class, COD, ammonia nitrogen (NH3- N), sulfide (S2-), benzene class, polycyclic aromatic hydrocarbon compounds and the cyanide (CN such as phenols-) etc..
In recent years, the improvement of the continuous improvement and technique that require with Chinese effluent, waste component become increasingly complex,
Requirement is had been unable to meet using conventional processes.Meanwhile for floorboard with high oil content, the waste water of biodegradability poor (B/C < 0.3)
Feature, traditional handicraft less can guarantee treatment effect.Currently, petrochemical wastewater processing Main way be enhabced primary treatment (every
Oil, air bearing), secondary biochemical treatment level and mating subsequent processing are improved, wherein containing chemical method, physico-chemical process, biochemical method, height
The application of the multistage-combinations methods such as grade oxidizing process.Chemical treatment is mainly saltoutd, is changed including flocculation, ion exchange, electrodialysis, chemistry
Learn the methods of oxidation, electrochemistry and photochemical treatment；Physical treatment mainly has Gravity Separation, filtering etc., and physico-chemical process has absorption, gas
The methods of floating, UF membrane；Bioprocess technology has A/O, bio-contact oxidation, biological aerated filter, MBBR method etc..
Conventional petrochemical waste water mainly has following technique and combinations thereof.
1, traditional activated sludge process/mud film mixing method technique
Domestic refinery produced-water treatment device at present mainly uses oil removal-air bearing-biochemistry (including A/O, SBR, MBBR, life
Object contact oxidation method, oxidation ditch etc.)-clarifying basin or air bearing or filtering technique.The technique can effectively remove the COD in waste water,
NH3Polluters such as-N, but require to front end water quality and quantity well-balanced adjustment, when the water inlet of secondary biochemical section is stablized, can obtain compared with
Good treatment effect.
2, bioanalysis+dual-membrane process
The newly-built refinery(waste) water processing unit of minority uses oil removal-air bearing-hydrolysis acidification-bioanalysis+MBR, goes out
First class index of the water COD general control in " integrated wastewater discharge standard " (GB8978-1996).But it is also difficult to reach subsequent use
The water quality indicator of water or new environmental emission standard.CNOOC Huizhou, middle Deng Duo company of petrochemical industry Maoming company etc. use MBR method
For engineer application, pre-processing effect COD stablizes 60mg/L hereinafter, after operation a period of time, and fouling membrane is serious, and operation is unstable
It is fixed.
In addition, petrochemical industry production scale expands and the diversification of product, the diversity for generating waste water is determined, so that useless
Contain acids and esters in water, but the hard-degraded substances proportion such as main hydro carbons, sulphur nitrogen class and benzene homologues is higher, these are dirty
Object is contaminated by the more difficult removal of standard biologic means, and with the continuous improvement of production-scale expansion and environmental protection standard, it is original
Technique has been not suitable with industry development requirement, and effluent index severely exceeds, traditional oil removal+air bearing+biochemistry " old three sets " technique without
Method reaches requirement, and therefore, for waste water floorboard with high oil content, the water quality of higher COD content and lower biodegradability (B/C < 0.3) is special
Point, it is necessary to waste water treatment process redesign and upgrading is carried out to processing system, protected while qualified discharge
The stability of card system operation.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is: providing a kind of petrochemical wastewater processing system, this is
System processing waste water is wanted simultaneously with reducing the COD and petroleum substance content in waste water, the i.e. effect of reinforcing oil removing and COD removal
Seek the most NH of removal3Petrochemical wastewater, especially floorboard with high oil content, higher is effectively treated in-N, TN, sulfide, volatile phenol and SS
The waste water of COD content and lower biodegradability (B/C < 0.3) guarantees that stable water outlet is up to standard, which both can according to circumstances create
Can also be through original processing system upgrading, construction cost is low.
In order to achieve the above objectives, the utility model adopts the following technical solution:
A kind of petrified waste water treatment process, comprising the following steps:
(1) coagulation: waste water reuses load Coagulation Method after being stood the preliminary oil removing of progress more than for 24 hours and further removes
Free indissolubility oil；
(2) it two stage treatment: using the processing of air bearing fiting chemical facture through step (1) treated oil-water emulsion, goes
The oil separated in oil removal (SS) and emulsion；
(3) biochemical treatment: being handled the water outlet of step (2) using anoxic/aerobic (A/O) activated sludge process, described
Anoxic/aerobic activated sludge process includes anoxic section and aerobic section, and water outlet that aerobic section sufficiently reacts need to will be had been subjected to when processing
A part is back to anoxic section, handles together after mixing with the water outlet of step (2), to remove organic matter and ammonia nitrogen；And it will be through lacking
The waste water that oxygen/aerobic activated sludge process is disposed is precipitated, and it is micro- that the activated sludge of precipitating is also back to anoxic section supplement
Biology；
(4) advanced treating: the water outlet of step (3) is after high efficiency clarification tank adds coagulant to precipitate using ozone contact position
Reason, larger molecular organics therein, which are oxidized, is changed into small molecule state, then handles again through biological aerated filter (BAF),
In organic matter be degraded, wastewater treatment finishes.
Preferably, in petrified waste water treatment process above-mentioned, step loads Coagulation Method described in (1) are as follows: in coagulating
During add iron salt coagulant while adding Fe3O4Magnetic powder, Fe3O4Magnetic powder forms nucleus and adsorbs grease, improves flocculation effect
Fruit removes free indissolubility oil, while recycling Fe by magnetic separator3O4Magnetic powder.
Preferably, in petrified waste water treatment process above-mentioned, the step (2) are as follows:
(2) two stage treatment: being neutralized to 7 for the water outlet pH value of step (1) with strong acid or highly basic, after regulating water quality water, then
It is handled through aerating oxidation and removes wherein sulfide, then using air bearing fiting chemical facture through step (1) treated grease
Emulsion removes the oil separated in oil removal and emulsion.Acid or alkali is added according to the difference of waste water quality is appropriate, makes water
In pH value meet the requirement of biochemical treatment, and meet the requirement in effluent quality index about pH value.
Preferably, in petrified waste water treatment process above-mentioned, in the step (3) further include: collect in anoxic/aerobic work
Property sludge wastewater treatment process in the exhaust gas that generates, and using biological island to after exhaust gas atomizing humidifying performance and by circulation spray
The bio-trickling medium of leaching is adequately contacted again, with biodegradable polluter.
Preferably, in petrified waste water treatment process above-mentioned, one is carried out again to the water outlet of step (3) in the step (4)
Secondary ozone contact treatment；The water outlet of the step (4) need to carry out ozone contact treatment again, be then refluxed for biological aerated filter
After processing, wastewater treatment finishes.
Implement the petrochemical wastewater processing system of previous process, including adjust oil removing pot, loads coagulation oil expeller, coagulation-flocculation
Flotation tank, A/O biochemistry pool, secondary sedimentation tank, high efficiency clarification tank, preceding ozone contact tank, biological aerated filter and clear water reserviors,
In: the outlet pipe for adjusting oil removing pot is connected with the water inlet pipe of load coagulation oil expeller, loads the outlet pipe of coagulation oil expeller and mixes
The water inlet pipe that flocks coagulate flotation tank is connected, and the outlet pipe of coagulation-flocculation flotation tank is connected with the water inlet pipe of A/O biochemistry pool, and A/O is raw
Changing pond includes the anoxic pond and aerobic tank that front and back is connected, and digestive juice reflux unit and sludge refluxing apparatus is arranged, and the A/O is raw
Changing pond also includes outlet pipe A and outlet pipe B, and aerator, preferably blast aerator are additionally provided in the aerobic tank, described
The entrance of digestive juice reflux unit is connected with outlet pipe A, and the outlet of digestive juice reflux unit is connected with anoxic pond, and the sludge returns
The entrance of stream device is connected with secondary precipitation bottom of pond portion, and the outlet of sludge refluxing apparatus is connected with anoxic pond, the water outlet of A/O biochemistry pool
Pipe B is connected with the water inlet pipe of secondary sedimentation tank, and the outlet pipe of secondary sedimentation tank is connected with the water inlet pipe of high efficiency clarification tank, efficiently
The outlet pipe of clarifying basin is connected with the water inlet pipe of preceding ozone contact tank, the outlet pipe of preceding ozone contact tank and biological aerated filter
Water inlet pipe is connected, and the outlet pipe of biological aerated filter is connected with clear water reserviors.In actual use, into one in coagulation-flocculation flotation tank
Step investment coagulant and flocculant process oil-water emulsion keep fat liquor, colloid and suspended solid de- steady, form oil in the water surface
Cake, the oil separated in suspended matter and emulsion can be removed by scraping off oil cake；In actual use, it also needs same to A/O biochemistry pool
When add phosphoric acid and sodium carbonate and carry out nitrification and denitrification and denitrogenate processing.
Further, in petrochemical wastewater processing system above-mentioned, the load coagulation oil expeller and coagulation-flocculation flotation tank
Between be additionally provided with neutralization pond and balancing tank, the water inlet pipe of neutralization pond is connected with the outlet pipe of load coagulation oil expeller, neutralization pond
Outlet pipe be connected with the water inlet pipe of balancing tank, the outlet pipe of balancing tank is connected with the water inlet pipe of coagulation-flocculation flotation tank, wherein
Aerator, preferably blast aerator are additionally provided in balancing tank.
Further, depth, which is arranged, in petrochemical wastewater processing system above-mentioned, at the A/O biochemistry pool outlet water at tail end is
The shallow pond degassing district of 10-20cm guarantees sedimentation in secondary sedimentation tank effect, and prevents Mud up-floating.
Further, in petrochemical wastewater processing system above-mentioned, the A/O biochemistry pool is equipped with can be whole by A/O biochemistry pool
The closed glass steel cover of body, and negative pressure sucking pump and bio-trickling filter are set, air inlet pipe and the glass steel cover phase of negative pressure sucking pump
Even, the escape pipe of negative pressure sucking pump is connected with the air inlet of bio-trickling filter.
It further, also include rear ozone contact tank in petrochemical wastewater processing system above-mentioned；The biological aerated filter
Comprising water inlet pipe A, water inlet pipe B, outlet pipe C and outlet pipe D, water inlet pipe A is connected with the outlet pipe of preceding ozone contact tank, water inlet pipe
B is connected with the outlet pipe of rear ozone contact tank, and outlet pipe C is connected with clear water reserviors, outlet pipe D and rear ozone contact tank water inlet pipe phase
Even.In actual use, further dispensing is carried out in high efficiency clarification tank carries out coagulation-flocculation reaction, precipitating and sludge condensation, control
SS content further decreases in water processed.
Water coke slurry in the waste water treatment system of the utility model between each reaction tank is according to the actual situation using promotion
Pump carries out, or each reaction tank is designed according to difference in height, is swapped using the gravity flowing of water.
The beneficial effects of the utility model are:
(1) waste water treatment process of the utility model (loads oil removing skill by using oil removing+medicament coagulation oil removing is adjusted
Art) after, then passing through the method for oil removal by air bubbling (coagulation+two stage treatment), deoiling effect is ideal, makes before entering A/O biochemistry pool
Water-quality petroleum be lower than 10mg/L, combined with subsequent technique, using coagulation+two stage treatment+biochemical treatment+depth
The mode combined is managed, the oil pollutant of various forms in waste water is removed in all directions.
(2) waste water treatment process of the utility model is on the basis of conventional processes, using pretreatment+biochemical treatment+
Advanced treating three-phase approach removes useless Organic substance in water.In pretreatment stage, through the methods of oil removal, air bearing in removal waste water
Oils while, have also been removed most of non-solubility organic matter；In the biochemical treatment stage, lived using anoxic, aerobic (A/O)
Property sludge is to COD, NH3- N is further removed, while being flowed back to activated sludge and nitrification liquid, using organic matter as electricity
Sub- donor carries out denitrification denitrogenation in anoxic section, carries out COD degradation in aerobic section using activated sludge, and by NH3- N and organic
Nitrogen is converted into nitrate nitrogen；It is utilized in the advanced treating stage by the group technology of increase " ozone contact+biological aerated filter "
Ozone strong oxidizing and BAF handle low strength COD feature, reach advanced treating effect, effectively remove rest COD content in water,
It is once again set up ozone contact in BAF water exit end simultaneously, water process is gone out to BAF, further decreases to flow back after COD total amount and is again introduced into
BAF carries out biodegrade to organic matter, ensure that water outlet COD stablizes, group technology can obtain preferable cost performance, first step
It is discharged COD after examination and is lower than 30mg/L, longtime running stably reaches the standard that water outlet COD is lower than 50mg/L.
(3) after biochemical treatment is by secondary settling tank, water outlet is again introduced into efficiently clear the waste water treatment system of the utility model
Clear pond carries out further dispensing in high efficiency clarification tank and carries out coagulation-flocculation reaction, precipitating and sludge condensation, controls SS in water and contains
Amount further decreases.
(4) waste water treatment system of the utility model both can have been created according to circumstances upgrade through original processing system and changed
It makes, it is stable, effectively reduce construction cost, operating cost.
The waste water treatment system of the utility model enhances front deoiling effect, and increases the novel process group of advanced treating
Petrochemical industry class waste water has been effectively treated in conjunction method, is mainly mink cell focus especially for contained oil component and contains acids and ester
Class but the wherein higher waste water of the hard-degraded substances proportion such as main hydro carbons, sulphur nitrogen class and benzene homologues, and ensure that water outlet
Stably reaching standard.
The principle of wastewater treatment is in the utility model:
(1) oil pollutant: the side combined using coagulation+two stage treatment+biochemical treatment+advanced treating is removed
Formula removes the oil pollutant of various forms in waste water in all directions.It is removed in the first segment of coagulation using adjusting
Oil tank carries out standing oil removing, and time of repose 24 hours；Waste water is after adjusting oil removing pot and carrying out preliminary oil removing, using advanced load
Coagulation oil expeller further removes free indissolubility oil.Load Coagulation Method is by adding in chemical flocculation reacts efficiently
Recyclable settling agent, for improving the specific gravity of coagulation wadding body, to greatly improve sludge settling speed and outlet effect.This reality
FeCl is added with novel middle load oil expeller3While add Fe3O4Magnetic powder forms nucleus and adsorbs grease, improves flocculating effect,
It simultaneously by magnetic separator recycling magnetic powder, recycles, not only reduced expense but also while reducing the occupied area of waste water system；Contain
Oily waste water handles the oil-water emulsion after primary separation after primary treatment, through air flotation technology fiting chemical facture, i.e.,
Coagulant and flocculant are put into when processing into waste water, keeps emulsion and suspended matter de- steady, oil cake is formed in the water surface, scrapes off oil cake
The oil separated in suspended matter and emulsion can be removed；Then, waste water enters biochemical treatment apparatus, in removal organic matter
Meanwhile the polarity grease in waste water is subjected to biodegrade；At this point, most of oil pollutant in waste water has been removed.And
It is combined with subsequent technique, in such a way that coagulation+two stage treatment+biochemical treatment+advanced treating combines, in waste water
The oil pollutant of various forms is removed in all directions
(2) it removes organic matter: useless Organic substance in water is removed using pretreatment+biochemical treatment+advanced treating three-phase approach.?
Pretreatment stage has also been removed most of non-solubility through devices such as oil removal, air bearings while removing the oils in waste water
Organic matter.In the biochemical treatment stage, using anoxic, aerobic (A/O) activated sludge process to COD, NH3- N is further removed, simultaneously
It adds phosphoric acid and sodium carbonate carries out nitrification and denitrification and denitrogenates processing.Sludge refluxing apparatus is set, to activated sludge and nitrification liquid
Flow back, using organic matter as electron donor, carry out denitrification denitrogenation in anoxic section, using activated sludge aerobic section into
Row COD degradation, and by NH3- N and organic nitrogen are converted into nitrate nitrogen.In the pond A/O latter end, shallow pond degassing district is designed, guarantees secondary settling tank
Sedimentation effect, and prevent Mud up-floating；It can be effectively using the group technology of " ozone contact+biological aerated filter (BAF) "
Remaining COD in water removal is removed, ozone has extremely strong oxidisability, and (oxidizing potential 2.8V, is only second to F2), it can be organic by macromolecular
Object is changed into small molecule state, is degraded by BAF, while ozone contacts after BAF outlet pipe is once again set up, and goes out to BAF
Water process, reflux is again introduced into BAF to organic matter progress biodegrade after further decreasing COD total amount.It ensure that water outlet COD is steady
It is fixed.Group technology can obtain preferable cost performance, and water outlet COD is lower than 30mg/L after preliminary debugging.
In addition, after raw wastewater enters processing system, its own internal foul gas generated dissolved with petrochemical processing, such as sulphur
Change hydrogen, organic sulfur compound and benzene homologues etc..It is aerated by the pond A/O, foul smell is easy diffusion, pollutes ambient enviroment.The utility model
Integrally glass steel cover is added to close in the pond A/O, by negative pressure ventilation, foul smell enters bio-trickling filter, follows after atomizing humidifying performance with process
The bio-trickling medium of ring spray leaching is adequately contacted again, with the pollutant in biodegradable gas, ensure that surrounding air
Environment.
(3) other pollutants are removed:
For ammonia nitrogen, biological denitrificaion is carried out in the pond A/O.While waste water enters the anoxic pond of A/O biochemistry pool, subsequent zone
A part of the nitrification liquid sufficiently reacted in section is also back to anoxic section (claiming nitrification liquid reflux or interior circulation).Anoxic pond
Interior denitrifying bacterium is using the organic substrates in raw wastewater as electron donor, with nitrate in phegma (or nitrite) for electronics
Nitrate-nitrogen reduction is gaseous nitrogen by receptor.Later, mixed liquor enters aerobic tank, completes oxidation operation, ammonification, nitration reaction.
For pH value, neutralization pond is set in process flow, difference according to the water quality of raw water is appropriate to be added acid or alkali, makes water
In pH value meet the requirement of biochemical treatment, and meet the requirement in effluent quality index about pH value.
For sulfide, aerator is set in balancing tank, using the method for aerating oxidation by the removal of sulphur in water.
According to the requirement in quality of reused water standard to indexs such as suspended matter, turbidity, in advanced treating step, by setting
Set high efficiency clarification tank, it can be ensured that effluent quality is strictly up to standard.
Detailed description of the invention
Fig. 1 is a kind of petrochemical wastewater processing unit schematic diagram of the utility model；
Description of symbols: 1- adjusts oil removing pot, and 2- loads coagulation oil expeller, 3- coagulation-flocculation flotation tank, 4-A/O biochemistry
Pond, ozone contact tank before 5- secondary sedimentation tank, 6-, 7- biological aerated filter, 8- clear water reserviors, 9- anoxic pond, 10- aerobic tank,
11- digestive juice reflux unit, 12- sludge refluxing apparatus, 13- outlet pipe A, 14- outlet pipe B, 15- aerator, 16- are neutralized
Pond, 17- balancing tank, 18- aerator, the shallow pond degassing district of 19-, 20- glass steel cover, 21- negative pressure sucking pump, 22- bio-trickling
Pond, 23- high efficiency clarification tank, ozone contact tank after 24-, 25- water inlet pipe A, 26- water inlet pipe B, 27- outlet pipe C, 28- outlet pipe
D。
Specific embodiment
Technical solutions of the utility model are further described with reference to embodiments.
Embodiment 1
A kind of petrochemical wastewater processing system, including oil removing pot 1 is adjusted, load coagulation oil expeller 2, coagulation-flocculation flotation tank 3,
A/O biochemistry pool 4, secondary sedimentation tank 5, high efficiency clarification tank 23, preceding ozone contact tank 6, biological aerated filter 7 and clear water reserviors 8,
In: adjust oil removing pot 1 outlet pipe with load coagulation oil expeller 2 water inlet pipe be connected, load coagulation oil expeller 2 outlet pipe and
The water inlet pipe of coagulation-flocculation flotation tank 3 is connected, and the outlet pipe of coagulation-flocculation flotation tank 3 is connected with the water inlet pipe of A/O biochemistry pool 4,
A/O biochemistry pool 4 includes the anoxic pond 9 and aerobic tank 10 that front and back is connected, and digestive juice reflux unit 11 and sludge reflux dress is arranged
12 are set, the A/O biochemistry pool 4 also includes outlet pipe A13 and outlet pipe B14, it is additionally provided with aerator 15 in the aerobic tank 10,
The entrance of the digestive juice reflux unit 11 is connected with outlet pipe A13, outlet and 9 phase of anoxic pond of digestive juice reflux unit 11
Even, the entrance of the sludge refluxing apparatus 12 is connected with 5 bottom of secondary sedimentation tank, the outlet and anoxic pond of sludge refluxing apparatus 12
9 are connected, and 4 outlet pipe B14 of A/O biochemistry pool is connected with the water inlet pipe of secondary sedimentation tank 5, the outlet pipe of secondary sedimentation tank 5 with it is efficient
The water inlet pipe of clarifying basin 23 is connected, and the outlet pipe of high efficiency clarification tank 23 is connected with the water inlet pipe of preceding ozone contact tank 6, and preceding ozone connects
The outlet pipe in touching pond 6 is connected with the water inlet pipe of biological aerated filter 7, and the outlet pipe of biological aerated filter 7 is connected with clear water reserviors 8.
The course of work of the present embodiment waste water treatment system are as follows:
1, coagulation: after oil removing pot 1 stands the preliminary oil removing of progress more than for 24 hours, water outlet enters load coagulation and removes waste water
Further the free indissolubility of removal is oily for oily device 2, wherein adding FeCl simultaneously when using load 2 oil removing of coagulation oil expeller3With
Fe3O4Magnetic powder forms nucleus and adsorbs grease, improves flocculating effect, while recycling magnetic powder by magnetic separator, recycles, both dropped
Low expense reduces the occupied area of waste water system simultaneously again；
2, two stage treatment: waste water enters coagulation-flocculation flotation tank 3 and cooperates addition coagulant, flocculant process through step through air bearing
Rapid 1 treated oil-water emulsion, keeps emulsion and suspended matter de- steady, forms oil cake in the water surface, scrape off oil cake can remove it is outstanding
The oil separated in floating object and emulsion；
3, biochemical treatment: waste water enters in A/O biochemistry pool 4, uses anoxic/aerobic activity by anoxic pond 9, aerobic tank 10
Sludge is to COD, NH3- N is further removed, and a part water outlet is through digestive juice reflux unit 11 to anoxic pond 9, remaining water outlet warp
Secondary sedimentation tank 5 precipitates, and the activated sludge of precipitating carries out being back to anoxic pond 9 through sludge refluxing apparatus 12；
4, advanced treating: the water outlet of secondary sedimentation tank 5 flows into high efficiency clarification tank 23, and coagulant, precipitation process are added again
After further removing oil removal, water outlet enters preceding ozone contact tank 6, and larger molecular organics are changed into small point by ozone oxidation
Sub- state, water outlet are entered back into biological aerated filter 7, after organic matter is degraded, water are discharged into clear water reserviors 7, wastewater treatment is complete
Finish.
Embodiment 2
A kind of petrochemical wastewater processing system, including oil removing pot 1 is adjusted, load coagulation oil expeller 2, coagulation-flocculation flotation tank 3,
A/O biochemistry pool 4, secondary sedimentation tank 5, high efficiency clarification tank 23, preceding ozone contact tank 6, biological aerated filter 7 and clear water reserviors 8,
In: adjust oil removing pot 1 outlet pipe with load coagulation oil expeller 2 water inlet pipe be connected, load coagulation oil expeller 2 outlet pipe and
The water inlet pipe of coagulation-flocculation flotation tank 3 is connected, and the outlet pipe of coagulation-flocculation flotation tank 3 is connected with the water inlet pipe of A/O biochemistry pool 4,
A/O biochemistry pool 4 includes the anoxic pond 9 and aerobic tank 10 that front and back is connected, and digestive juice reflux unit 11 and sludge reflux dress is arranged
12 are set, the A/O biochemistry pool 4 also includes outlet pipe A13 and outlet pipe B14, it is additionally provided with aerator 15 in the aerobic tank 10,
The entrance of the digestive juice reflux unit 11 is connected with outlet pipe A13, outlet and 9 phase of anoxic pond of digestive juice reflux unit 11
Even, the entrance of the sludge refluxing apparatus 12 is connected with 5 bottom of secondary sedimentation tank, the outlet and anoxic pond of sludge refluxing apparatus 12
9 are connected, and 4 outlet pipe B14 of A/O biochemistry pool is connected with the water inlet pipe of secondary sedimentation tank 5, the outlet pipe of secondary sedimentation tank 5 with it is efficient
The water inlet pipe of clarifying basin 23 is connected, and the outlet pipe of high efficiency clarification tank 23 is connected with the water inlet pipe of preceding ozone contact tank 6, and preceding ozone connects
The outlet pipe in touching pond 6 is connected with the water inlet pipe of biological aerated filter 7, and the outlet pipe of biological aerated filter 7 is connected with clear water reserviors 8；
It is additionally provided with neutralization pond 16 and balancing tank 17 between the load coagulation oil expeller 2 and coagulation-flocculation flotation tank 3, neutralization pond 16
Water inlet pipe is connected with the outlet pipe of load coagulation oil expeller 2, and the outlet pipe of neutralization pond 16 is connected with the water inlet pipe of balancing tank 17,
The outlet pipe in weighing apparatus pond 17 is connected with the water inlet pipe of coagulation-flocculation flotation tank 3, wherein blast aeration dress is additionally provided in balancing tank 17
Set 18.
The course of work of the present embodiment waste water treatment system are as follows:
1, coagulation: after oil removing pot 1 stands the preliminary oil removing of progress more than for 24 hours, water outlet enters load coagulation and removes waste water
Further the free indissolubility of removal is oily for oily device 2；
2, two stage treatment: waste water enters neutralization pond 16 and H is added2SO4Or NaOH by pH to being adjusted to 7, water outlet enters balancing tank
17, regulating water quality water, while after the processing of 18 aerating oxidation of aerator, water outlet flow to coagulation-flocculation flotation tank 3 through air bearing
Coagulant, flocculant process is added through step 1 treated oil-water emulsion in cooperation, keeps emulsion and suspended matter de- steady, in water
Face forms oil cake, and the oil separated in suspended matter and emulsion can be removed by scraping off oil cake；
3, biochemical treatment: waste water enters in A/O biochemistry pool 4, uses anoxic/aerobic activity by anoxic pond 9, aerobic tank 10
Sludge is to COD, NH3- N is further removed, and a part water outlet is through digestive juice reflux unit 11 to anoxic pond 9, remaining water outlet warp
Secondary sedimentation tank 5 precipitates, and the activated sludge of precipitating carries out being back to anoxic pond 9 through sludge refluxing apparatus 12；
4, advanced treating: the water outlet of secondary sedimentation tank 5 flows into high efficiency clarification tank 23, and coagulant, precipitation process are added again
After further removing oil removal, water outlet enters preceding ozone contact tank 6, and larger molecular organics are changed into small point by ozone oxidation
Sub- state, water outlet are entered back into biological aerated filter 7, after organic matter is degraded, water are discharged into clear water reserviors 7, wastewater treatment is complete
Finish.
Embodiment 3
A kind of petrochemical wastewater processing system, including oil removing pot 1 is adjusted, load coagulation oil expeller 2, coagulation-flocculation flotation tank 3,
A/O biochemistry pool 4, secondary sedimentation tank 5, high efficiency clarification tank 23, preceding ozone contact tank 6, biological aerated filter 7 and clear water reserviors 8,
In: adjust oil removing pot 1 outlet pipe with load coagulation oil expeller 2 water inlet pipe be connected, load coagulation oil expeller 2 outlet pipe and
The water inlet pipe of coagulation-flocculation flotation tank 3 is connected, and the outlet pipe of coagulation-flocculation flotation tank 3 is connected with the water inlet pipe of A/O biochemistry pool 4,
A/O biochemistry pool 4 includes the anoxic pond 9 and aerobic tank 10 that front and back is connected, and digestive juice reflux unit 11 and sludge reflux dress is arranged
12 are set, the A/O biochemistry pool 4 also includes outlet pipe A13 and outlet pipe B14, and blast aeration dress is additionally provided in the aerobic tank 10
15 are set, the entrance of the digestive juice reflux unit 11 is connected with outlet pipe A13, the outlet and anoxic pond of digestive juice reflux unit 11
9 are connected, and the entrance of the sludge refluxing apparatus 12 is connected with 5 bottom of secondary sedimentation tank, the outlet of sludge refluxing apparatus 12 with it is scarce
Oxygen pond 9 be connected, 4 outlet pipe B14 of A/O biochemistry pool is connected with the water inlet pipe of secondary sedimentation tank 5, the outlet pipe of secondary sedimentation tank 5 and
The water inlet pipe of high efficiency clarification tank 23 is connected, and the outlet pipe of high efficiency clarification tank 23 is connected with the water inlet pipe of preceding ozone contact tank 6, preceding smelly
The outlet pipe of oxygen contact chamber 6 is connected with the water inlet pipe of biological aerated filter 7, outlet pipe and 8 phase of clear water reserviors of biological aerated filter 7
Even；Neutralization pond 16 and balancing tank 17, neutralization pond are additionally provided between the load coagulation oil expeller 2 and coagulation-flocculation flotation tank 3
16 water inlet pipe is connected with the outlet pipe of load coagulation oil expeller 2, the water inlet pipe phase of the outlet pipe and balancing tank 17 of neutralization pond 16
Even, the outlet pipe of balancing tank 17 is connected with the water inlet pipe of coagulation-flocculation flotation tank 3, wherein air blast exposure is additionally provided in balancing tank 17
Device of air 18.
It is the shallow pond degassing district 19 of 10cm that depth is arranged at 4 outlet water at tail end of A/O biochemistry pool.
And being equipped on the A/O biochemistry pool 4 can be by the glass steel cover 20 of 4 integrally closed of A/O biochemistry pool, and is arranged negative
Pressure aspiration pump 21 and bio-trickling filter 22, the air inlet pipe of negative pressure sucking pump 21 are connected with glass steel cover 20, negative pressure sucking pump 21
Escape pipe is connected with the air inlet of bio-trickling filter 22.
The course of work of the present embodiment waste water treatment system are as follows:
1, coagulation: after oil removing pot 1 stands the preliminary oil removing of progress more than for 24 hours, water outlet enters load coagulation and removes waste water
Further the free indissolubility of removal is oily for oily device 2；
2, two stage treatment: waste water enters neutralization pond 16 and H is added2SO4Or NaOH by pH to being adjusted to 7, water outlet enters balancing tank
17, regulating water quality water, while after the processing of 18 aerating oxidation of aerator, water outlet flow to coagulation-flocculation flotation tank 3 through air bearing
Coagulant, flocculant process is added through step 1 treated oil-water emulsion in cooperation, keeps emulsion and suspended matter de- steady, in water
Face forms oil cake, and the oil separated in suspended matter and emulsion can be removed by scraping off oil cake；
3, biochemical treatment: waste water enters in A/O biochemistry pool 4, uses anoxic/aerobic activity by anoxic pond 9, aerobic tank 10
Sludge is to COD, NH3- N is further removed, and the water being disposed flows through shallow pond degassing district 19, to guarantee that sedimentation in secondary sedimentation tank is imitated
Fruit, and prevent Mud up-floating, rear portion water outlet through digestive juice reflux unit 11 to anoxic pond 9, remaining water outlet is through secondary heavy
Shallow lake pond 5 is precipitated, and the activated sludge of precipitating carries out being back to anoxic pond 9 through sludge refluxing apparatus 12；It will by negative pressure sucking pump 21
The exhaust gas generated in anoxic/aerobic activated sludge process wastewater treatment process in glass steel cover 20 is pumped into bio-trickling filter 22,
It is adequately contacted again to after exhaust gas atomizing humidifying performance with by the bio-trickling medium of circulated sprinkling in bio-trickling filter 22, with
Biodegradable polluter prevents pollution air；
4, advanced treating: the water outlet of secondary sedimentation tank 5 flows into high efficiency clarification tank 23, and coagulant, precipitation process are added again
After further removing oil removal, water outlet enters preceding ozone contact tank 6, and larger molecular organics are changed into small point by ozone oxidation
Sub- state, water outlet are entered back into biological aerated filter 7, after organic matter is degraded, water are discharged into clear water reserviors 7, wastewater treatment is complete
Finish.
Embodiment 4
A kind of petrochemical wastewater processing system, including oil removing pot 1 is adjusted, load coagulation oil expeller 2, coagulation-flocculation flotation tank 3,
A/O biochemistry pool 4, secondary sedimentation tank 5, high efficiency clarification tank 23, preceding ozone contact tank 6, biological aerated filter 7 and clear water reserviors 8,
In: adjust oil removing pot 1 outlet pipe with load coagulation oil expeller 2 water inlet pipe be connected, load coagulation oil expeller 2 outlet pipe and
The water inlet pipe of coagulation-flocculation flotation tank 3 is connected, and the outlet pipe of coagulation-flocculation flotation tank 3 is connected with the water inlet pipe of A/O biochemistry pool 4,
A/O biochemistry pool 4 includes the anoxic pond 9 and aerobic tank 10 that front and back is connected, and digestive juice reflux unit 11 and sludge reflux dress is arranged
12 are set, the A/O biochemistry pool 4 also includes outlet pipe A13 and outlet pipe B14, and blast aeration dress is additionally provided in the aerobic tank 10
15 are set, the entrance of the digestive juice reflux unit 11 is connected with outlet pipe A13, the outlet and anoxic pond of digestive juice reflux unit 11
9 are connected, and the entrance of the sludge refluxing apparatus 12 is connected with 5 bottom of secondary sedimentation tank, the outlet of sludge refluxing apparatus 12 with it is scarce
Oxygen pond 9 be connected, 4 outlet pipe B14 of A/O biochemistry pool is connected with the water inlet pipe of secondary sedimentation tank 5, the outlet pipe of secondary sedimentation tank 5 and
The water inlet pipe of high efficiency clarification tank 23 is connected, and the outlet pipe of high efficiency clarification tank 23 is connected with the water inlet pipe of preceding ozone contact tank 6, preceding smelly
The outlet pipe of oxygen contact chamber 6 is connected with the water inlet pipe of biological aerated filter 7, outlet pipe and 8 phase of clear water reserviors of biological aerated filter 7
Even；Neutralization pond 16 and balancing tank 17, neutralization pond are additionally provided between the load coagulation oil expeller 2 and coagulation-flocculation flotation tank 3
16 water inlet pipe is connected with the outlet pipe of load coagulation oil expeller 2, the water inlet pipe phase of the outlet pipe and balancing tank 17 of neutralization pond 16
Even, the outlet pipe of balancing tank 17 is connected with the water inlet pipe of coagulation-flocculation flotation tank 3, wherein air blast exposure is additionally provided in balancing tank 17
Device of air 18；It also include high efficiency clarification tank 23 and rear ozone contact tank 24,5 outlet pipe of secondary sedimentation tank and high efficiency clarification tank
23 water inlet pipes are connected, and the outlet pipe of high efficiency clarification tank 23 is connected with preceding 6 water inlet pipe of ozone contact tank；The biological aerated filter 7
Comprising water inlet pipe A25, water inlet pipe B26, outlet pipe C27 and outlet pipe D28, the water outlet of water inlet pipe A25 and preceding ozone contact tank 6
Pipe is connected, and water inlet pipe B26 is connected with the outlet pipe of rear ozone contact tank 24, and outlet pipe C27 is connected with clear water reserviors 8, outlet pipe
D28 is connected with rear 24 water inlet pipe of ozone contact tank.
It is the shallow pond degassing district 19 of 10cm that depth is arranged at 4 outlet water at tail end of A/O biochemistry pool.
And being equipped on the A/O biochemistry pool 4 can be by the glass steel cover 20 of 4 integrally closed of A/O biochemistry pool, and is arranged negative
Pressure aspiration pump 21 and bio-trickling filter 22, the air inlet pipe of negative pressure sucking pump 21 are connected with glass steel cover 20, negative pressure sucking pump 21
Escape pipe is connected with the air inlet of bio-trickling filter 22.
The course of work of the present embodiment waste water treatment system are as follows:
1, coagulation: after oil removing pot 1 stands the preliminary oil removing of progress more than for 24 hours, water outlet enters load coagulation and removes waste water
Further the free indissolubility of removal is oily for oily device 2；
2, two stage treatment: waste water enters neutralization pond 16 and H is added2SO4Or NaOH by pH to being adjusted to 7, water outlet enters balancing tank
17, regulating water quality water, while after the processing of 18 aerating oxidation of aerator, water outlet flow to coagulation-flocculation flotation tank 3 through air bearing
Coagulant, flocculant process is added through step 1 treated oil-water emulsion in cooperation, keeps emulsion and suspended matter de- steady, in water
Face forms oil cake, and the oil separated in suspended matter and emulsion can be removed by scraping off oil cake；
3, biochemical treatment: waste water enters in A/O biochemistry pool 4, uses anoxic/aerobic activity by anoxic pond 9, aerobic tank 10
Sludge is to COD, NH3- N is further removed, and the water being disposed flows through shallow pond degassing district 19, to guarantee that sedimentation in secondary sedimentation tank is imitated
Fruit, and prevent Mud up-floating, rear portion water outlet through digestive juice reflux unit 11 to anoxic pond 9, remaining water outlet is through secondary heavy
Shallow lake pond 5 is precipitated, and the activated sludge of precipitating carries out being back to anoxic pond 9 through sludge refluxing apparatus 12；It will by negative pressure sucking pump 21
The exhaust gas generated in anoxic/aerobic activated sludge process wastewater treatment process in glass steel cover 20 is pumped into bio-trickling filter 22,
It is adequately contacted again to after exhaust gas atomizing humidifying performance with by the bio-trickling medium of circulated sprinkling in bio-trickling filter 22, with
Biodegradable polluter prevents pollution air；
4, advanced treating: the water outlet of secondary sedimentation tank 5 flows into high efficiency clarification tank 23, and coagulant, precipitation process are added again
After further removing oil removal, water outlet enters preceding ozone contact tank 6 and carries out ozone contact treatment, and larger molecular organics are by ozone oxygen
Change is changed into small molecule state, and water outlet enters back into biological aerated filter 7, after organic matter is degraded, after again entering water outlet
Ozone contact tank 24 carries out ozone contact treatment and further decreases COD total amount, is then refluxed for biological aerated filter 7 to organic matter
Biodegrade is carried out, water outlet is then discharged into clear water reserviors 8, wastewater treatment finishes.
Agents useful for same and drug are commercial product in the utility model.
To verify the utility model for the treatment effect of petrochemical wastewater, inventor is in the wastewater treatment system to certain oil plant
System has carried out upgrading according to the utility model embodiment 4, and through trial operation, monitoring result is as shown in Table 1 and Table 2, and table 1 is useless
The influent quality of water, table 2 are to demonstrate the wastewater treatment equipment energy of the utility model through the present embodiment treated effluent quality
The COD and petroleum content in waste water are enough reduced, enhances oil removing and COD removal effect, while can remove most
NH3- N, TN, sulfide, volatile phenol and SS meet emission request, good waste water treatment effect, system run all right.
1 influent waste water water quality of table
The processed effluent quality of table 2
| Serial number | Basic item controlled | Unit | Maximum value |
| 1 | COD cr | mg/L | 50 |
| 2 | BOD5 | mg/L | 10 |
| 3 | SS | mg/L | 20 |
| 4 | Volatile phenol | mg/L | 0.5 |
| 5 | Petroleum-type | mg/L | 3 |
| 6 | TN | mg/L | 15 |
| 7 | NH3-N | mg/L | 8(10) |
| 8 | pH | 6-9 | |
| 9 | Sulfide | mg/L | 0.5 |
Note: Con trolling index when the outer numerical value of bracket is water temperature > 12 DEG C, control when numerical value is water temperature≤12 DEG C in bracket refer to
Mark.
Claims (5)
1. a kind of petrochemical wastewater processing system, which is characterized in that including adjusting oil removing pot (1), load coagulation oil expeller (2), mix
Flocks are coagulated flotation tank (3), A/O biochemistry pool (4), and secondary sedimentation tank (5), preceding ozone contact tank (6), exposes at high efficiency clarification tank (23)
Gas biofilter (7) and clear water reserviors (8), in which: adjust the outlet pipe of oil removing pot (1) and the water inlet of load coagulation oil expeller (2)
Pipe is connected, and the outlet pipe of load coagulation oil expeller (2) is connected with the water inlet pipe of coagulation-flocculation flotation tank (3), coagulation-flocculation air bearing
The outlet pipe in pond (3) is connected with the water inlet pipe of A/O biochemistry pool (4), A/O biochemistry pool (4) include front and back be connected anoxic pond (9) and
Aerobic tank (10), and digestive juice reflux unit (11) and sludge refluxing apparatus (12) are set, the A/O biochemistry pool (4) also includes
Outlet pipe A (13) and outlet pipe B (14) is additionally provided with aerator (15) in the aerobic tank (10), the digestive juice reflux dress
The entrance for setting (11) is connected with outlet pipe A (13), and the outlet of digestive juice reflux unit (11) is connected with anoxic pond (9), the dirt
The entrance of mud reflux unit (12) is connected with secondary sedimentation tank (5) bottom, the outlet and anoxic pond (9) of sludge refluxing apparatus (12)
It is connected, A/O biochemistry pool (4) outlet pipe B (14) is connected with the water inlet pipe of secondary sedimentation tank (5), the outlet pipe of secondary sedimentation tank (5)
It is connected with the water inlet pipe of high efficiency clarification tank (23), the outlet pipe of high efficiency clarification tank (23) and the water inlet pipe of preceding ozone contact tank (6)
It is connected, the outlet pipe of preceding ozone contact tank (6) is connected with the water inlet pipe of biological aerated filter (7), and biological aerated filter (7) goes out
Water pipe is connected with clear water reserviors (8).
2. petrochemical wastewater processing system according to claim 1, which is characterized in that the load coagulation oil expeller (2) and
Neutralization pond (16) and balancing tank (17), the water inlet pipe of neutralization pond (16) and load are additionally provided between coagulation-flocculation flotation tank (3)
The outlet pipe of coagulation oil expeller (2) is connected, and the outlet pipe of neutralization pond (16) is connected with the water inlet pipe of balancing tank (17), balancing tank
(17) outlet pipe is connected with the water inlet pipe of coagulation-flocculation flotation tank (3), wherein balancing tank is additionally provided with aerator in (17)
(18)。
3. petrochemical wastewater processing system according to claim 1, which is characterized in that A/O biochemistry pool (4) outlet water at tail end
Place's setting depth is the shallow pond degassing district (19) of 10-20cm.
4. petrochemical wastewater processing system according to claim 1, which is characterized in that the A/O biochemistry pool (4) is equipped with energy
By the glass steel cover (20) of A/O biochemistry pool (4) integrally closed, and negative pressure sucking pump (21) and bio-trickling filter (22) are set, born
The air inlet pipe of pressure aspiration pump (21) is connected with glass steel cover (20), the escape pipe of negative pressure sucking pump (21) and bio-trickling filter (22)
Air inlet be connected.
5. petrochemical wastewater processing system according to claim 1, which is characterized in that also include rear ozone contact tank (24)；
The biological aerated filter (7) includes water inlet pipe A (25), water inlet pipe B (26), outlet pipe C (27) and outlet pipe D (28), water inlet
Pipe A (25) is connected with the outlet pipe of preceding ozone contact tank (6), the outlet pipe phase of water inlet pipe B (26) and rear ozone contact tank (24)
Even, outlet pipe C (27) is connected with clear water reserviors (8), and outlet pipe D (28) is connected with rear ozone contact tank (24) water inlet pipe.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039505A (en) * | 2019-12-25 | 2020-04-21 | 水净缘环境科技股份有限公司 | Sewage treatment process and system using air source as power |
| CN111439901A (en) * | 2020-05-29 | 2020-07-24 | 上海蓝科石化环保科技股份有限公司 | Closed petrochemical coal chemical wastewater advanced treatment device and process |
| CN111732278A (en) * | 2020-06-29 | 2020-10-02 | 无锡德林海环保科技股份有限公司 | Water body purification integrated equipment and method |
| CN115180781A (en) * | 2022-08-18 | 2022-10-14 | 山东中欧膜技术研究有限公司 | Efficient and energy-saving high-concentration phenol-containing and oil-containing wastewater treatment device and method for treating high-concentration phenol-containing and oil-containing wastewater by using same |
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2018
- 2018-08-20 CN CN201821337901.XU patent/CN208327758U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039505A (en) * | 2019-12-25 | 2020-04-21 | 水净缘环境科技股份有限公司 | Sewage treatment process and system using air source as power |
| CN111439901A (en) * | 2020-05-29 | 2020-07-24 | 上海蓝科石化环保科技股份有限公司 | Closed petrochemical coal chemical wastewater advanced treatment device and process |
| CN111732278A (en) * | 2020-06-29 | 2020-10-02 | 无锡德林海环保科技股份有限公司 | Water body purification integrated equipment and method |
| CN115180781A (en) * | 2022-08-18 | 2022-10-14 | 山东中欧膜技术研究有限公司 | Efficient and energy-saving high-concentration phenol-containing and oil-containing wastewater treatment device and method for treating high-concentration phenol-containing and oil-containing wastewater by using same |
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Effective date of registration: 20190328 Address after: 301700 Building B05, Venture Headquarters Base, Wuqing Development Zone, Tianjin Patentee after: Huadian Water (Tianjin) Co., Ltd. Address before: 100070 Unit 601-1, Unit 1, Building 1, No. 6 Courtyard, East Road, Automobile Museum, Fengtai District, Beijing Co-patentee before: Huadian Water Engineering Co., Ltd. Patentee before: Huadian Water Holding Co., Ltd. |