CN105923838A - Method for deep processing and recycling oil refining wastewater - Google Patents
Method for deep processing and recycling oil refining wastewater Download PDFInfo
- Publication number
- CN105923838A CN105923838A CN201610440303.4A CN201610440303A CN105923838A CN 105923838 A CN105923838 A CN 105923838A CN 201610440303 A CN201610440303 A CN 201610440303A CN 105923838 A CN105923838 A CN 105923838A
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- Prior art keywords
- water
- waste
- refinery
- oil refining
- inorganic
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a method for deep processing and recycling oil refining wastewater. A technical scheme of the invention includes: adding 15-25 mg/L inorganic/organic composite coagulant into biochemically-treated oil refining wastewater for coagulating, and removing colloid and residual macromolecular organics in the oil refining wastewater; pumping the coagulated oil refining wastewater into an ozone catalytic oxidation column, wherein a ceramsite catalyst using manganese nitrate, titanium dioxide and copper nitrate as active ingredients is disposed in the ozone catalytic oxidation column; introducing ozone gas, keeping ozone concentration in a liquid phase under 25-35 mg/L, and reacting for 12-15 min; finally, pumping the oil refining wastewater subjected to ozone catalytic oxidation into a polyvinylidene fluoride tubular-membrane ultrafiltration membrane assembly, and using effluent of the polyvinylidene fluoride tubular-membrane ultrafiltration membrane assembly as supplementary water of recirculating cooling wat4er of a refinery for refuse.
Description
Technical field
The invention belongs to refinery(waste) water further treatment technique field.A kind of method being specifically related to refinery(waste) water advanced treatment and reclamation.
Background technology
Along with country is to low-carbon economy and the further attention to energy-saving and emission-reduction, improve the emission request of refinery(waste) water, oil refining enterprise faces the severeest environmental protection pressure.Big-and-middle-sized oil refining enterprise of China has tens, refinery(waste) water processes the process technique mostly using " oil removal air supporting A/O is biochemical ", refinery(waste) water after biochemistry, need to combine the complicated subsequent technique such as ultrafiltration and bio-contact oxidation through BAF and could meet the discharging standards newly promulgated, therefore development process is short, simple for process, reduced investment wastewater deep treatment process is increasingly subject to those skilled in the art concern.
Refinery(waste) water advanced treatment process mainly has at present:
Refinery(waste) water after biochemistry first carrying out bio-contact oxidation, then carries out bio-aeration process, filter through multi-medium filtering device, the last ultrafiltration of waste water after filtration, the method complex process, hydraulic detention time length and operating cost are higher.
" process for reclaiming of a kind of refinery(waste) water " (CN103771656B), the method is that refinery(waste) water carries out oil removing and oil removal process, sequencing batch activated sludge process and forward osmosis membrane bioreactor process successively, processed by oil removing and oil removal and remove petroleum-type and float, processed by SBR and remove most COD and ammonia nitrogen, remaining COD is removed by OMBR, and retain float and inorganic salt, the method water quality treatment is preferable, but there is the shortcoming such as complex treatment process and operating cost height.
" deep treatment method of a kind of refinery(waste) water " (CN102276053B), the method is the former water as advanced treating of the refinery(waste) water after processing with oil plant two stage biological, acetic acid solution and former water are squeezed into BAF simultaneously, control the dosing ratio of acetic acid, co-substrate principle is utilized to remove the remaining Organic substance in refinery(waste) water further, the method constantly to add acetic acid, and add the waste water after acetic acid and neutralize owing to also needing in acidity to add alkali, and therefore processing cost is high.
Summary of the invention
It is contemplated that in overcoming prior art defect, it is therefore an objective to the method that the refinery(waste) water advanced treatment and reclamation that a kind of technique is simple, operating cost is low, non-secondary pollution produce raw and COD removal efficiency is high is provided.
For achieving the above object, the technical solution used in the present invention is as follows:
(1) inorganic/organic composite coagulant adding 15 ~ 25mg/L in the refinery(waste) water after biochemistry carries out coagulation.
(2) refinery(waste) water after coagulation pumping into catalytic ozonation tower, catalytic ozonation tower is built-in with catalyst;Being passed through ozone gas again, keeping the ozone concentration in liquid phase is 25 ~ 35mg/L, and the response time is 12 ~ 15min.
(3) refinery(waste) water after catalytic ozonation pumping into Kynoar tubular membrane ultrafiltration membrane module, the water outlet of Kynoar tubular membrane ultrafiltration membrane module is as the supplementary Water circulation of oil plant recirculated cooling water.
Refinery(waste) water after described biochemistry is the refinery(waste) water after secondary biochemical and precipitation, and the COD in waste water is 65 ~ 120mg/L.
Described inorganic/organic composite coagulant is aluminium polychlorid and the complex of polyacrylamide or for the complex of polymerization ferrous sulfate with polyacrylamide;Polyacrylamide is 15 ~ 20wt% of inorganic/organic composite coagulant.
Described catalyst is the haydite with manganese nitrate, titanium dioxide and copper nitrate as active component, and described haydite particle diameter is 4 ~ 6mm.
Owing to using technique scheme, the present invention compared with prior art has a following good effect:
(1) present invention uses aluminium polychlorid or polymerization ferrous sulfate to carry out coagulating treatment with the compound coagulant of polyacrylamide composition, and coagulation effect is more preferable, and the COD removal effect in refinery(waste) water is more preferably.
(2) present invention first carries out coagulation with inorganic/organic composite coagulant to the refinery(waste) water after biochemistry, remove the colloid in refinery(waste) water and the larger molecular organics of residual, be conducive to follow-up ozone oxidation, and catalytic ozonation uses the haydite with manganese nitrate, titanium dioxide and copper nitrate as active component as catalyst, catalytic efficiency is higher, required ozone dosage is lower, and the required response time is shorter.
(3) first coagulation, rear catalytic ozonation remove the group technology of major part pollutant ultrafiltration again in refinery(waste) water, and ultrafilter membrane is not easily blocked.
(4) ultra-filtration water COD of the present invention is 33.8 ~ 39.3mg/L, and water quality meets circulating cooling system and supplements the water quality requirement of water.
Therefore, the present invention has the advantages that technique is simple, COD removal efficiency is high, operating cost is low and non-secondary pollution produce are raw.
Detailed description of the invention
Below by detailed description of the invention, the present invention is described further, not the restriction to its protection domain.
Catalyst described in this detailed description of the invention is the haydite with manganese nitrate, titanium dioxide and copper nitrate as active component, and described haydite particle diameter is 4 ~ 6mm.Embodiment repeats no more.
Embodiment
1
A kind of method of refinery(waste) water advanced treatment and reclamation.Described in the present embodiment, method is:
(1) inorganic/organic composite coagulant adding 15 ~ 18mg/L in the refinery(waste) water after biochemistry carries out coagulation.
(2) refinery(waste) water after coagulation pumping into catalytic ozonation tower, catalytic ozonation tower is built-in with catalyst;Being passed through ozone gas again, keeping the ozone concentration in liquid phase is 25 ~ 30mg/L, and the response time is 14 ~ 15min.
(3) refinery(waste) water after catalytic ozonation pumping into Kynoar tubular membrane ultrafiltration membrane module, the water outlet of Kynoar tubular membrane ultrafiltration membrane module is as the supplementary Water circulation of oil plant recirculated cooling water.
Refinery(waste) water after biochemistry described in the present embodiment is the refinery(waste) water after secondary biochemical and precipitation, and the COD in waste water is 65 ~ 85mg/L.
Inorganic/organic composite coagulant described in the present embodiment is the complex of aluminium polychlorid and polyacrylamide;Polyacrylamide is 15 ~ 18wt% of inorganic/organic composite coagulant.
Ultra-filtration water COD of the present embodiment is 36.5 ~ 39.3mg/L, and water quality meets circulating cooling system and supplements the water quality requirement of water.
Embodiment
2
A kind of method of refinery(waste) water advanced treatment and reclamation.Described in the present embodiment, method is:
(1) inorganic/organic composite coagulant adding 18 ~ 21mg/L in the refinery(waste) water after biochemistry carries out coagulation.
(2) refinery(waste) water after coagulation pumping into catalytic ozonation tower, catalytic ozonation tower is built-in with catalyst;Being passed through ozone gas again, keeping the ozone concentration in liquid phase is 28 ~ 32mg/L, and the response time is 13 ~ 14min.
(3) refinery(waste) water after catalytic ozonation pumping into Kynoar tubular membrane ultrafiltration membrane module, the water outlet of Kynoar tubular membrane ultrafiltration membrane module is as the supplementary Water circulation of oil plant recirculated cooling water.
Refinery(waste) water after biochemistry described in the present embodiment is the refinery(waste) water after secondary biochemical and precipitation, and the COD in waste water is 80 ~ 100mg/L.
Described in the present embodiment, inorganic/organic composite coagulant is the complex for polymerization ferrous sulfate Yu polyacrylamide;Polyacrylamide is 16 ~ 19wt% of inorganic/organic composite coagulant.
The ultra-filtration water COD average out to 35.3 ~ 37.1mg/L of the present embodiment, water quality meets circulating cooling system and supplements the water quality requirement of water.
Embodiment
3
A kind of method of refinery(waste) water advanced treatment and reclamation.Described in the present embodiment, method is:
(1) inorganic/organic composite coagulant adding 21 ~ 25mg/L in the refinery(waste) water after biochemistry carries out coagulation.
(2) refinery(waste) water after coagulation pumping into catalytic ozonation tower, catalytic ozonation tower is built-in with catalyst;Being passed through ozone gas again, keeping the ozone concentration in liquid phase is 31 ~ 35mg/L, and the response time is 12 ~ 13min.
(3) refinery(waste) water after catalytic ozonation pumping into Kynoar tubular membrane ultrafiltration membrane module, the water outlet of Kynoar tubular membrane ultrafiltration membrane module is as the supplementary Water circulation of oil plant recirculated cooling water.
Refinery(waste) water after biochemistry described in the present embodiment is the refinery(waste) water after secondary biochemical and precipitation, and the COD in waste water is 100 ~ 120mg/L.
Inorganic/organic composite coagulant described in the present embodiment is aluminium polychlorid and the complex of polyacrylamide or for the complex of polymerization ferrous sulfate with polyacrylamide;Polyacrylamide is 17 ~ 20wt% of inorganic/organic composite coagulant.
This detailed description of the invention compared with prior art has a following good effect:
(1) this detailed description of the invention uses aluminium polychlorid or polymerization ferrous sulfate to carry out coagulating treatment with the compound coagulant of polyacrylamide composition, and coagulation effect is more preferable, and the COD removal effect in refinery(waste) water is more preferably.
(2) this detailed description of the invention first carries out coagulation with inorganic/organic composite coagulant to the refinery(waste) water after biochemistry, remove the colloid in refinery(waste) water and the larger molecular organics of residual, be conducive to follow-up ozone oxidation, and catalytic ozonation uses the haydite with manganese nitrate, titanium dioxide and copper nitrate as active component as catalyst, catalytic efficiency is higher, required ozone dosage is lower, and the required response time is shorter.
(3) first coagulation, rear catalytic ozonation remove the group technology of major part pollutant ultrafiltration again in refinery(waste) water, and ultrafilter membrane is not easily blocked.
(4) ultra-filtration water COD of this detailed description of the invention is 33.8 ~ 39.3mg/L, and water quality meets circulating cooling system and supplements the water quality requirement of water.
Therefore, this detailed description of the invention has the advantages that technique is simple, COD removal efficiency is high, operating cost is low and non-secondary pollution produce are raw.
Claims (4)
1. the method for a refinery(waste) water advanced treatment and reclamation, it is characterised in that the method comprises the following steps:
(1) inorganic/organic composite coagulant adding 15 ~ 25mg/L in the refinery(waste) water after biochemistry carries out coagulation;
(2) refinery(waste) water after coagulation pumping into catalytic ozonation tower, catalytic ozonation tower is built-in with catalyst;Being passed through ozone gas again, keeping the ozone concentration in liquid phase is 25 ~ 35mg/L, and the response time is 12 ~ 15min;
(3) refinery(waste) water after catalytic ozonation pumping into Kynoar tubular membrane ultrafiltration membrane module, the water outlet of Kynoar tubular membrane ultrafiltration membrane module is as the supplementary Water circulation of oil plant recirculated cooling water.
2. the method for refinery(waste) water advanced treatment and reclamation as claimed in claim 1, it is characterised in that the refinery(waste) water after described biochemistry is the refinery(waste) water after secondary biochemical and precipitation, and the COD in waste water is 65 ~ 120mg/L.
3. the method for as claimed in claim 1 refinery(waste) water advanced treatment and reclamation, it is characterised in that described inorganic/organic composite coagulant is aluminium polychlorid and the complex of polyacrylamide or for the complex of polymerization ferrous sulfate with polyacrylamide;Polyacrylamide is 15 ~ 20wt% of inorganic/organic composite coagulant.
4. the method for refinery(waste) water advanced treatment and reclamation as claimed in claim 1, it is characterised in that described catalyst is the haydite with manganese nitrate, titanium dioxide and copper nitrate as active component, and described haydite particle diameter is 4 ~ 6mm.
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CN201610440303.4A CN105923838A (en) | 2016-06-20 | 2016-06-20 | Method for deep processing and recycling oil refining wastewater |
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CN201610440303.4A CN105923838A (en) | 2016-06-20 | 2016-06-20 | Method for deep processing and recycling oil refining wastewater |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109012648A (en) * | 2018-08-08 | 2018-12-18 | 武汉科技大学 | A kind of method that oil plant recycling sludge utilizes |
Citations (2)
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CN105060633A (en) * | 2015-08-06 | 2015-11-18 | 鹏鹞环保股份有限公司 | Petrochemical wastewater advanced treatment method |
CN205295002U (en) * | 2015-10-22 | 2016-06-08 | 中国石油化工股份有限公司 | Oil refining advanced waste treatment device |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105060633A (en) * | 2015-08-06 | 2015-11-18 | 鹏鹞环保股份有限公司 | Petrochemical wastewater advanced treatment method |
CN205295002U (en) * | 2015-10-22 | 2016-06-08 | 中国石油化工股份有限公司 | Oil refining advanced waste treatment device |
Non-Patent Citations (1)
Title |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109012648A (en) * | 2018-08-08 | 2018-12-18 | 武汉科技大学 | A kind of method that oil plant recycling sludge utilizes |
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Application publication date: 20160907 |