CN110407408A - Oil-polluted water treatment process - Google Patents
Oil-polluted water treatment process Download PDFInfo
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- CN110407408A CN110407408A CN201910662293.2A CN201910662293A CN110407408A CN 110407408 A CN110407408 A CN 110407408A CN 201910662293 A CN201910662293 A CN 201910662293A CN 110407408 A CN110407408 A CN 110407408A
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- Prior art keywords
- oil
- reaction
- polluted water
- fenton
- pond
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/52—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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
The invention discloses a kind of oil-polluted water treatment process, and oil-polluted water is inputted in Fenton's reaction pond and carries out degradable organic pollutant, after Fenton's reaction in waste water input UV photodissociation catalyst converter, while extending Fenton's reaction progress, will improve the removal rate of organic matter；PH value control will be carried out in oil-polluted water input PH readjustment reaction tank, oil-polluted water input filter press is isolated into sludge, filtrate inputs anaerobic pond and generates anaerobic reaction, degradation of organic substances, oil-polluted water input anoxic pond is subjected to hypoxia response, removing unit divides COD, oil-polluted water input aerobic tank is subjected to aerobic reaction, organic matter is resolved into inorganic matter, bio-chemical effluent carries out physico-chemical precipitation, with separating suspension, granulometric impurity is filtered out by MBR membrane bioreactor, generate clean water, can significantly be degraded the COD COD of oil-polluted water, ammonia nitrogen, the pollutants such as suspended matter, so that effluent quality is high, entire rational technology, using effect is good, low energy consumption for system operation, operating cost is low.
Description
Technical field
The invention belongs to field of waste water treatment, are related to a kind for the treatment of process of oil-polluted water.
Background technique
In industrial production link, many substances are not only difficult to biodegrade or direct or indirect carcinogen exists
In nature, carry out grave danger again to human health；Therefore, oil-polluted water Treatment process is the problem of one of generality.
Oil-polluted water is mainly derived from the processes such as Coking and Gas, gas purification, chemical products recycling processing, including residue
Ammonium hydroxide, pitch cooling water, cold water-break, two benzene separation water, crude benzol separation water, refining benzene separation water, tar washes, biochemistry are dirty eventually
Water and other waste water.Ammonia nitrogen, phenol, cyanogen, sulfide and hundreds of organic matters are mainly contained in oil-polluted water, it is complex in composition, also contain
There are the poisonous and harmful substances such as cyanogen, fluorine ion and ammonia nitrogen, pollutant coloration is high, belongs to useless compared with the high concentration organic industry of bio-refractory
Water.Oil-polluted water is that the typical waste water containing aromatic compound and heterocyclic compound accounts for organic contamination based on phenolic compound
More than half of object, in addition there are also polycyclc aromatic compounds and nitrogenous, oxygen, the heterocyclic compound of sulphur etc.；Inorganic pollution owner
To belong to poisonous and harmful high concentrated organic wastewater based on hydride, sulfohydrate, sulfide and ammonia salt etc., processing difficulty is very big,
Waste water especially without dephenolize ammonia still process oil removal treatment, phenol, NH3-N (ammonia nitrogen), oil content are all very high, complex treatment process, fortune
Row is costly, and the pollutants such as final outflow water COD (COD), NH3-N (ammonia nitrogen), oil are difficult to qualified discharge.
There are catalytic wet oxidation technology, electrochemical oxidation technology, photocatalysis oxidation technique, Fenton for oil-polluted water at present
(Fenton) technologies such as method, active carbon adsorption, biochemical treatment process, but all there is various drawbacks for these technologies.It is catalyzed wet
Formula oxidation technology ideal treatment effect, but catalyst is expensive, and processing cost is high, and runs under high-temperature and high-pressure conditions, right
Process equipment requires stringent.Photocatalytic oxidation can dramatically increase the degradation rate of COD (COD), but due to light by
Turbidity influences, and use occasion is restricted.Fenton process oxidability is strong, since it can generate the very strong OH free radical of oxidability,
When handling difficult for biological degradation or general chemical oxidation organic wastewater hard to work, have be swift in response, temperature and pressure etc.
The advantages that reaction condition mitigates and is without secondary pollution, but can be generated with a large amount of iron cement.
Summary of the invention
The technical issues of present invention is for it is still necessary to solve proposes that the greasy dirt that a kind of water treatment is high-efficient, environment friendly and pollution-free is useless
Water treatment technology.
The technical solution adopted by the present invention: a kind of processing step of oil-polluted water treatment process is: firstly, wastewater equalization pond
Oily waste water water quality is adjusted, inputted oil-polluted water in level-one Fenton's reaction pond by water pump and adds sulfuric acid progress acid
Change, after about 30 minutes reaction time, second level Fenton's reaction pond is transferred to by water pump, dosing pump adds ferrous sulfate and double automatically
Oxygen water, Fenton advanced oxidation reaction carry out, and after about 30 minutes reaction time, waste water can guarantee Fenton's reaction by UV photodissociation equipment
Lasting progress, accelerate the decomposition rate of organic matter；Water outlet after UV photodissociation enters PH readjustment pond, and PH passes through filter press after adjusting
Isolate sludge and filtrate；Then, pressing filtering liquid enters anaerobic pond completion anaerobic reaction, hydrolyzes organic matter by anaerobic bacteria
Acidification and methanation, improve the biodegradability of waste water；It, will when entering anoxic pond by aerobic and anaerobe effect
Complicated organic matter is further broken into small organic molecule, is conducive to subsequent aerobic treatment, when oil-polluted water enters
Organic matter is resolved into inorganic matter by oxygen pond, aerobic microbiological bacterium group；Then, aerobic tank is discharged and carries out physico-chemical precipitation, with separation
Suspended matter；Finally, filtering out granulometric impurity using MBR membrane bioreactor, clean water is generated.
Further, it is 250~600nm that the UV photodissociation catalyst converter, which generates UV ultraviolet spectrum wavelength, restores ferric iron,
Extend the Fenton's reaction time, further increases the degradation rate of organic matter.
Further, chemicals needed for the precipitating are 30mg/L aluminium polychloride and 5mg/L polyacrylamide.
Implement above-mentioned technical proposal, the pollutants such as the COD COD of the oil-polluted water that can significantly degrade, ammonia nitrogen,
So that effluent quality gets a promotion, entire rational technology, using effect is good, and system operation energy consumption is low, and operating cost is low.
Detailed description of the invention
Fig. 1 is oil-polluted water processing system schematic diagram.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to explain the present invention, but and is not constituted a limitation of the invention.In addition, each reality as described below
It does not constitute a conflict with each other and can be combined with each other if applying technical characteristic involved in mode.
As shown in Figure 1, oil-polluted water processing system by wastewater equalization pond, level-one Fenton's reaction pond, second level Fenton's reaction pond,
UV photodissociation catalyst converter, PH readjustment reaction tank, filter press, filtrate collecting pit, anaerobic pond, anoxic pond, aerobic tank, biogenic sediment pond and
MBR film process pond passes sequentially through pipeline connection composition.
The process of oil-polluted water treatment process is:
1, oil-polluted water is inputted in wastewater equalization pond and is kept in, started water pump, it is anti-that oil-polluted water is promoted to level-one Fenton
Ying Chizhong starts to process oil-polluted water operation.
2, mixed liquor of the Fenton's reaction using oxygen radical in 254nm ultraviolet light ferrous iron and hydrogen peroxide generates hydroxyl free
Base, the strong oxidizing property of hydroxyl radical free radical are broken the carbon-carbon bond of larger molecular organics, form small organic molecule, then by small molecule
Carbon-oxygen bond, the C-H bond cleavage of organic matter generate carbon dioxide and water.Process characteristic is that Fenton's reaction is divided into two sections of progress,
Level-one Fenton's reaction injects dilute sulfuric acid in pond, for Fenton's reaction carry out the acidic environment of PH2~4 is provided, when the greasy dirt of acidification
Waste water flows into second level Fenton's reaction pond, injects ferrous sulfate and hydrogen peroxide to second level Fenton's reaction pond, by the hydroxyl of generation from
By the jeterocyclic chemistry in the waste water such as base depth removal dyeing waste water, oily waste water, phenol wastewater, oil-polluted water, nitrobenzene-containing waste water
Close the harmful substance of object and difficult removal.After Fenton oxidation pre-processes 30 minutes, organic matter, coloration in waste water, organic gel
Body etc. has all removed major part.
3, Fenton's reaction proceeds to the later period and continues to flow into UV photodissociation catalyst converter, and spectral wavelength is 250~600nm, passes through UV
The catalytic action of ultraviolet light makes part ferric iron back ferrous iron, maintains the progress of Fenton's reaction, improves organic matter
Decomposition efficiency and speed.And the organic matter in waste water is aoxidized and degraded with medicament collective effect, processing links wiper ring
It protects, production cost is low.
4, PH adjusts back reaction tank injection caustic soda, and pH value control carries out physico-chemical precipitation in 6-8.
5, the waste water after being adjusted PH by filter press isolates sludge and pressing filtering liquid, outer place, sludge committee by filter press
Reason, pressing filtering liquid will be further processed into biochemical system.
6, filtered fluid input anaerobic pond is generated into anaerobic reaction by water pump.Anaerobic pond anaerobic degradation process is divided into four
A stage: hydrolysis stage, produces acetic acid stage and methane phase stage at fermentation (or acidification) stage.Hydrolysis stage: hydrolysis may be defined as
The polymer of complicated non-solubility is converted into the process of simple dissolubility monomer or dimer.Macromolecule organic is because of phase
It is huge to molecular weight, cell membrane cannot be penetrated, therefore can not directly utilize for bacterium.They are in the stage by bacterium ectoenzyme point
Solution is small molecule.For example, cellulose is cellobiose and glucose by cellulose hydrolyzation, starch is malt by Amylase Hydrolysis
Sugar and glucose, protein are small peptide and amino acid etc. by proteolytic.The hydrolysate of these small molecules can dissolve
It is utilized in water and through cell membrane by bacterium.Hydrolytic process usually relatively slowly, therefore be considered as pbz polymer organic matter or
The rate-limiting step of suspended matter waste liquid anaerobic degradation.Concentration of composition, hydrolysate of many factors such as temperature, organic matter etc. may
Influence the speed of hydrolysis and the degree of hydrolysis.Fermentation (or acidification) stage: fermentation may be defined as organic compound and both be used as electricity
Sub- receptor is also the biodegradation process of electron donor, and dissolved organic matter is converted into volatile fatty acid in the process
Based on end products, therefore this process also referred to as be acidified.The compound zymogenous bacteria (i.e. acidification bacterium) of above-mentioned small molecule
Cellular transformation is more simple compound and is secreted into extracellular.The zymogenous bacteria overwhelming majority is strict anaerobes, but logical
The alkaline anaerobic bacteria of Chang Youyue 1% is present in anaerobic environment, these alkaline anaerobic bacterias can play protection as methane backeria
Strict anaerobes from oxygen damage and inhibition.The primary product in this stage has volatile fatty acid, alcohols, lactic acid, two
The composition of carbonoxide, hydrogen, ammonia, hydrogen sulfide etc., product depends on the condition of anaerobic degradation, substrate kind and participates in the micro- of acidification
Biotic population.At the same time, acidification bacterium also utilizes moieties to synthesize new cellular material, therefore, at not-acidified anaerobic waste water
More excess sludges are generated when reason.In anaerobic degradation process, acidification bacteria must take in the tolerance of acid.Acidification
It can be carried out when process pH drops to 4.But the range of methane phase process pH value is between 6.5~7.5, therefore under pH value
General who has surrendered can reduce the generation of methane and the consumption of hydrogen, and further cause the change of acidification end products composition.
7, filtering liquid input anoxic pond carries out hypoxia response, and in denitrification process, pH value is increased.In denitrification process
In, mainly play denitrification removal liquid nitrogen, while removing part COD (COD), improves the drop of anoxic sludge
Solution ability, making up to stable treatment effect also plays the role of hydrolysis raising biodegradability.
8, anoxic liquid input aerobic tank carries out aerobic reaction, maintains content of oxygen dissolved in water to exist by measures such as aerations
4mg/l or so is suitable for growth of aerobic microorganisms breeding, to handle the structures of pollutant in water, activated sludge is allowed to carry out
The bioprocesses of inorganic matter are further resolved into organic matter in aerobic respiration.The sewage treatment work of anaerobic- anoxic- oxic
Skill forms A2O treatment process.
9, it is carried out by biogenic sediment pond, carries out rapid flocculation precipitating, separating suspension.By the way that PAC and PAM flocculation is added
Precipitating, PAC (aluminium polychloride) additional amount are 30mg/L, and PAM (polyacrylamide) is 5mg/L, are efficiently removed remaining in sewage
The polluters such as suspended matter.If generating mixing liquid processing index after precipitating to be not achieved, recycles input anoxic pond and carry out again
Hypoxia response processing, to promote sedimentation effect.
10, finally, filtering out granulometric impurity by MBR membrane bioreactor, clean water is generated, completes oil-polluted water processing
Process.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (3)
1. a kind of oil-polluted water treatment process, it is characterised in that processing step is:
Firstly, oily waste water water quality is adjusted in wastewater equalization pond, oil-polluted water is inputted by level-one Fenton's reaction by water pump
It in pond and adds sulfuric acid and is acidified, after about 30 minutes reaction time, second level Fenton's reaction pond, dosing pump are transferred to by water pump
Automatic addition ferrous sulfate and hydrogen peroxide, after about 30 minutes Fenton advanced oxidation reaction time, waste water can by UV photodissociation equipment
The lasting progress for guaranteeing Fenton's reaction, accelerates the decomposition rate of organic matter；Water outlet after UV photodissociation enters PH readjustment pond, and PH is adjusted
Sludge and filtrate are isolated by filter press afterwards；
Then, pressing filtering liquid enters anaerobic pond completion anaerobic reaction, makes organic matter that hydrolysis acidification and methanation occur by anaerobic bacteria,
Improve the biodegradability of waste water；When entering anoxic pond by aerobic and anaerobe effect, by complicated organic matter into
One step is decomposed into small organic molecule, is conducive to subsequent aerobic treatment, when oil-polluted water enters aerobic tank, aerobic micro- life
Organic matter is resolved into inorganic matter by object bacterium group；
Then, aerobic tank is discharged and carries out physico-chemical precipitation, with separating suspension；
Finally, filtering out granulometric impurity using MBR membrane bioreactor, clean water is generated.
2. oil-polluted water treatment process according to claim 1, it is characterised in that: it is purple that the UV photodissociation catalyst converter generates UV
Outside line spectral wavelength is 250~600nm, restores ferric iron, extends the Fenton's reaction time, further increases the degradation speed of organic matter
Rate.
3. oil-polluted water treatment process according to claim 1, it is characterised in that: chemicals needed for the precipitating are
30mg/L aluminium polychloride and 5mg/L polyacrylamide.
Priority Applications (1)
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| CN201910662293.2A CN110407408A (en) | 2019-07-22 | 2019-07-22 | Oil-polluted water treatment process |
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| CN201910662293.2A CN110407408A (en) | 2019-07-22 | 2019-07-22 | Oil-polluted water treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902959A (en) * | 2019-12-09 | 2020-03-24 | 上海净屹环保科技有限公司 | Treatment method of meat product unfreezing wastewater |
| CN112744988A (en) * | 2021-03-04 | 2021-05-04 | 上海玉畔环保科技有限公司 | Treatment system and treatment method for waste lubricating oil regeneration wastewater |
| CN113213673A (en) * | 2021-06-09 | 2021-08-06 | 山东潍坊润丰化工股份有限公司 | Method for treating heptenone tar wastewater |
| CN113830976A (en) * | 2021-10-29 | 2021-12-24 | 深圳市福田区环境技术研究所有限公司 | Treatment process with zero discharge of wastewater |
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| CN101514061A (en) * | 2009-03-30 | 2009-08-26 | 白妮 | System and method for processing waste water based on photochemical reaction |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
| CN109020015A (en) * | 2018-09-03 | 2018-12-18 | 广州尚洁环保工程有限公司 | A kind of ultraviolet catalytic oxidized waste water processing system and method |
-
2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514061A (en) * | 2009-03-30 | 2009-08-26 | 白妮 | System and method for processing waste water based on photochemical reaction |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
| CN109020015A (en) * | 2018-09-03 | 2018-12-18 | 广州尚洁环保工程有限公司 | A kind of ultraviolet catalytic oxidized waste water processing system and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902959A (en) * | 2019-12-09 | 2020-03-24 | 上海净屹环保科技有限公司 | Treatment method of meat product unfreezing wastewater |
| CN112744988A (en) * | 2021-03-04 | 2021-05-04 | 上海玉畔环保科技有限公司 | Treatment system and treatment method for waste lubricating oil regeneration wastewater |
| CN113213673A (en) * | 2021-06-09 | 2021-08-06 | 山东潍坊润丰化工股份有限公司 | Method for treating heptenone tar wastewater |
| CN113830976A (en) * | 2021-10-29 | 2021-12-24 | 深圳市福田区环境技术研究所有限公司 | Treatment process with zero discharge of wastewater |
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