CN105330061B - A kind of advanced treatment process of oil field reinjection water - Google Patents

A kind of advanced treatment process of oil field reinjection water Download PDF

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CN105330061B
CN105330061B CN201510753135.XA CN201510753135A CN105330061B CN 105330061 B CN105330061 B CN 105330061B CN 201510753135 A CN201510753135 A CN 201510753135A CN 105330061 B CN105330061 B CN 105330061B
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ozone
water
oil field
filter
catalytic tower
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CN105330061A (en
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何丹农
董亚梅
尹桂林
童琴
吴晓燕
金彩虹
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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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
    • C02F1/001—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
    • C02F1/72—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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/78—Details relating to ozone treatment devices
    • C02F2201/782—Ozone generators
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/78—Details relating to ozone treatment devices
    • C02F2201/784—Diffusers or nozzles for ozonation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention discloses a kind of a kind of advanced treatment process system of oil field reinjection water of the advanced treating of oil field reinjection water, its feature includes one-level intake pump, filter water inlet, more medium filter, water-locator, ceramics filling area, active carbon filler area, filter delivery port, backwashing pump, backwash water inlet, backwash delivery port, intermediate pool, two grades of intake pumps, catalytic tower water inlet, ozone catalytic tower, kaolin ozone catalyst, ozone generator, ozone pipeline and air inlet, ozone diffuser, ozone quencher and gas outlet, catalytic tower delivery port, draining pump.The present invention proposes oil extraction waste water further treatment technique scheme, system solves the problem of oil field reinjection water organic pollution is exceeded, and oil extraction waste water can reach oil field re-injection requirement after the technical program is handled, and treatment effect is stable, production run cost is low, and operation operation is easy.

Description

A kind of advanced treatment process of oil field reinjection water
Technical field
The invention belongs to water-treatment technology field, and in particular to a kind of oil field reinjection water advanced treatment system.
Background technology
In oil extraction process, particularly in the middle and later periods of oilfield exploitation, formation pressure is with the extension of recovery time It is gradually reduced, after the pressure of oil reservoir drops below the saturation pressure of oil gas, is dissolved in the natural gas in oil in oil In layer will substantial amounts of separate out, oil well output is decreased obviously, and oil-gas ratio rises, and underground crude oil property changes, caused Viscosity increases and flow difficulties so that substantial amounts of degassed crude (also known as dead oil) residual is not exploited not come out in the earth formation, reduction oil The production efficiency in field.In order to keep formation pressure, extend the flush stage of oil well, the main method used at present is noted into stratum Enter water, with the crude oil for supplementing oneself extraction voidage shared in oil reservoir so that formation pressure keeps stable or risen, and reaches To high output of oilwell stable yields, the purpose of raising ultimate recovery.Each oil field of existing China uses water flood recovery development scheme mostly, And in order to improve follow-up production efficiency, water filling is begun in animated period in oil field.But during water flood recovery, injection The water and crude oil output together of underground supplement strata pressure, after water-oil separating, produce substantial amounts of oil field waste.Current China Water content is 70-80% in the own mid-term and later stage for entering oil exploitation in most of oil field, Produced Liquid, and some oil fields are even Up to 90%, and with the increase of recovery time, water content constantly increases, therefore in the wastewater flow rate produced by China oil field It is very huge.If the directly outer row of such substantial amounts of recovered water, very serious problem of environmental pollution will be caused, while again unrestrained The water resource of preciousness is taken.If after oiliness sewage treatment, reinjection into reservoir again, not only can be with to supplement the pressure on stratum Environmental pollution is avoided, and saves substantial amounts of water resource.Oily waste water is handled and re-injection is that sustainable open is realized in oil field Hair and a cost-effective important channel of raising oilfield economic benefit.Due to oil extraction waste water complicated, if directly re-injection Stratum is used for further oil exploitation, and serious harm is not only caused to oil production equipment and system, subsurface formations can be also destroyed. Crude oil waste water is before unprocessed, and suspension (machine is miscellaneous), oil content are much higher compared with the underground water of extraction in water, this meeting Directly or indirectly cause the blocking of water injection well and oilbearing stratum.
Oil exploitation industry one is directly subordinate to waste water consumption and discharge rich and influential family, and energy-saving and emission-reduction are a developing directions.But, it is right The advanced treatment process of maturation is there is no both at home and abroad in oil field reinjection water, therefore this patent proposes the advanced treating of oil field reinjection water System process, realize oil extraction waste water green processing, reduce the wastewater discharge that ton adopts crude oil.Therefore, increase to oil The research dynamics of field reinjected water advanced treating, formulating has targetedly processing scheme, explores the depth of further oil field reinjection water Processing tecchnics are spent, to realizing that the sustainable development and energy-saving and emission-reduction of Oil-production Enterprises are significant.
The content of the invention
The purpose of the present invention is the water quality and quantity situation discharged according to oil field reinjection water, overcomes lacking for prior art presence There is provided a kind of oil field reinjection water economy, efficient wastewater deep treatment process for point.
The method that the present invention is used is achieved through the following technical solutions：
The advanced treatment process system of a kind of oil field reinjection water, it is characterised in that including one-level intake pump, filter water inlet Mouth, more medium filter, water-locator, ceramics filling area, active carbon filler area, filter delivery port, backwashing pump, backwash into The mouth of a river, backwash delivery port, intermediate pool, two grades of intake pumps, catalytic tower water inlet, ozone catalytic tower, kaolin ozone catalytics Agent, ozone generator, ozone pipeline and air inlet, ozone diffuser, ozone quencher and gas outlet, catalytic tower delivery port, row Water pump.
Comprise the following steps：
（1）Filtering area：Pending oil field reinjection water enters many by one-level intake pump from pipeline from filter water inlet Water-locator aperture in medium filter, filter is 25~75 mm, then by ceramics filling area and active carbon filler area； The volume ratio in ceramics filling area and active carbon filler area is 1:(5~8)；Behind two packing areas, pass through filter delivery port Into intermediate pool；Residence time of the oil field reinjection water in more medium filter is 40~120 min, more medium filter hair Backwashing period is 8~24 h；Clear water goes out from backwashing pump into Filter Back Washing water inlet from backwashing water during backwash The mouth of a river is flowed out, and whole backwashing time is 5~10 min；
（2）Ozone catalytic tower：Waste water in intermediate pool is by two grades of intake pumps from the water inlet on ozone catalytic tower top Into the kaoline loaded ozone catalyst filler of filling inside catalytic tower；The source of the gas of ozone generator is pure oxygen, the ozone of generation Entered by ozone pipeline and air inlet from catalysis tower bottom, whole catalytic tower is diffused to by ozone diffuser, not had finally There is the ozone being utilized to be eliminated by ozone quencher, then emptied by gas outlet；Stop of the oil field reinjection water in catalytic tower Time is 20~60min, and the filling density of catalyst is 100~300 g/L, and catalyst volume accounts for the 50 of whole catalytic tower volume ~75%；After catalytic tower catalysis oxidation, oil field reinjection water is up to standard by draining pump.
The ceramics filling particle diameter is 2~10 mm, and the porosity is 40~65%, and density is 300~500 kg/m3, resistance to compression Intensity >=1.5MPa.
Described active carbon filler particle diameter is 50~120 mesh, and specific surface area is 2400~3600 m2/ g, superficial density is 350~600 kg/m3。
Described kaoline loaded ozone catalyst filler, its feature includes the preparation of modification infusorial earth：
（1）Screening：The mm of particle diameter 5~25 is chosen, the uniformity is 85%~98% kaolin；
（2）Cleaning：It is that 2~5% sulfuric acid solutions cleans 5 times that the kaolin of corresponding particle diameter, which is chosen, with percentage by volume, then with steaming Distilled water is cleaned 5 times, and 3~5h is then dried in 105~120 DEG C of air dry ovens, standby after cooling；
（3）Dipping：Preparation mass concentration is 5~10% nickel nitrate solutions, 3~8% manganese nitrate solutions and 1~4% ammonium ceric nitrate Solution, all with metallic element Mass Calculation, then these three solution are with volume ratio 1：1：1 is configured to mixed solution, molten mixing The hydroxylamine hydrochloride as the mg/L of dispersant 2~5 is added in liquid, dipping solution is formed.By kaolin bubble in dipping solution, 5~10h is shaken with 120~160rmp speed in 35~45 DEG C of isothermal vibration case；Then kaolin is taken out, at room temperature certainly So air-dry；
（4）High temperature sintering：Kaolin is placed in 105~120 DEG C of blast heating casees and dries 2~5h, is placed into nitrogen As in the high temperature furnace of protective gas, 200~300 DEG C first are warming up to 15-20 DEG C/min, 2~3h of constant temperature calcining is then proceeded to 600 DEG C are warming up to 30-45 DEG C/min, the h of constant temperature calcining 3~5, then natural cooling；The kaolin of cooling is placed on volume hundred Then fraction dries 2~5 h to soak 1~3 h in 50~75% salpeter solution in 105~120 DEG C of blast heating casees, from So cooling, prepares kaolin catalyst.
It is described to prepare in kaoline loaded ozone catalyst metal oxide supported dose rate in 8~20%, porosity For 80~90%, specific surface area is 50~65 m2/g。
The water quality and quantity situation that the present invention is discharged according to oil field reinjection water, it is proposed that oil extraction waste water further treatment technique side Case, develops economic, efficient wastewater deep treatment process, and system solves that oil field reinjection water organic pollution is exceeded to ask The removal efficiency of organic matter in topic, lifting oil extraction waste water, reduction ton adopts the wastewater discharge of crude oil, and realizes that oil extraction waste water is up to standard Re-injection.Oil extraction waste water advanced treatment process proposed by the present invention is with energy-saving and emission-reduction and is recycling as main task, with the present invention Oil field reinjection water advanced treatment process, treatment effect is stable, and production run cost is low, and operation operation is easy, automaticity Height, can reduce environmental pollution, respond actively increasingly strict legislations of environmental protection.Patent of the present invention proposes oil extraction waste water depth The system solution of processing, not only economical and environmentally friendly double effectses, and with good social benefit and environmental benefit.
Embodiment
Embodiments of the invention are elaborated below：The present embodiment is carried out lower premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations Example.
Embodiment 1：
The oil extraction waste water in Xinjiang minery is handled, the water quality of before processing oil extraction waste water is：Oil content is 55 Mg/L, suspension is 45 mg/L.Processing procedure is as follows：Waste water passes sequentially through one-level intake pump, filter water inlet, multimedium Filter, water-locator, ceramics filling area, active carbon filler area, filter delivery port, backwashing pump, backwash water inlet, recoil Wash out the mouth of a river, intermediate pool, two grades of intake pumps, catalytic tower water inlet, ozone catalytic tower, kaolin ozone catalyst, ozone hairs Raw device, ozone pipeline and air inlet, ozone diffuser, ozone quencher and gas outlet, catalytic tower delivery port, draining pump.
Main processing steps are divided into：
（1）Filtering area：Pending oil field reinjection water enters many by one-level intake pump from pipeline from filter water inlet Water-locator aperture in medium filter, filter is 50 mm, then by ceramics filling area and active carbon filler area.Haydite The volume ratio in packing area and active carbon filler area is 1:5.Behind two packing areas, middle water is entered by filter delivery port Pond.Residence time of the oil field reinjection water in more medium filter is 60 min, and more medium filter hair backwashing period is 12 h.Clear water enters Filter Back Washing water inlet from backwashing pump and flowed out from backwashing water delivery port during backwash, whole backwash Time is 10 min.The major function in ceramics filling area is to remove particulate matter big in oil field reinjection water and prevent upper strata filtrate Loss.
（2）Ozone catalytic tower：Behind two packing areas, suspension and impurity in oil field reinjection water are effectively gone Remove, intermediate pool is then entered by filter delivery port.Waste water in intermediate pool is by two grades of intake pumps from ozone catalytic The water inlet on tower top enters, the kaoline loaded ozone catalyst filler of filling inside catalytic tower.The source of the gas of ozone generator is Pure oxygen, the ozone of generation is entered by ozone pipeline and air inlet from catalysis tower bottom, is diffused to and entirely urged by ozone diffuser Change reaction tower, the ozone not being utilized finally is eliminated by ozone quencher, then emptied by gas outlet.Oil field reinjection water exists Residence time in catalytic tower is 30 min, and the filling density of catalyst is 200 g/L, and catalyst volume accounts for whole catalysis tower body Long-pending 75%.After catalytic tower catalysis oxidation, oil field reinjection water is up to standard by draining pump.Ceramics filling particle diameter used is 6 Mm, the porosity is 55%, and density is 350 kg/m3, the MPa of compression strength >=1.5.Active carbon filler particle diameter used is 80 mesh, Specific surface area is 3000 m2/ g, superficial density is 400 kg/m3。
Kaoline loaded ozone catalyst filler used, its feature includes the preparation of modification infusorial earth：
（1）Screening：The mm of particle diameter 15 is chosen, the uniformity is 95% kaolin；
（2）Cleaning：It is that 4% sulfuric acid solution clean 5 times that the kaolin of corresponding particle diameter, which is chosen, with percentage by volume, then with distilling Water is cleaned 5 times, then dries 4h in 105 DEG C of air dry ovens, standby after cooling；
（3）Dipping：Preparation mass concentration is 5% nickel nitrate solution, 6% manganese nitrate solution and 3% ceric ammonium nitrate solution（All with Metallic element Mass Calculation）, then these three solution are with volume ratio 1：1：1 is configured to mixed solution, is added in mixed solution As the mg/L of dispersant 3 hydroxylamine hydrochloride, dipping solution is formed.By kaolin bubble in dipping solution, shaken in 35 DEG C of constant temperature Swing in case with 120 rmp speed concussion 10h；Then kaolin is taken out, at room temperature natural air drying；
（4）High temperature sintering：Kaolin is placed in the blast heating case of 120 DEG C of conditions and dries 4 h, places into and is made with nitrogen In the high temperature furnace of protective gas, to be first warming up to 210 DEG C with 20 DEG C/min, constant temperature calcining 2h is then proceeded to 30 DEG C/min liters Temperature is to 600 DEG C, 3~5h of constant temperature calcining, then natural cooling.The kaolin of cooling is placed in 60% salpeter solution and soaks 2h, Then 3h is dried in the blast heating case of 120 DEG C of conditions, natural cooling prepares kaolin catalyst.Prepared height Metal oxide supported dose rate is 15% in the soil load ozone catalyst of ridge, and porosity is 85%, and specific surface area is 60 m2/g。
After catalytic tower catalysis oxidation, oil field reinjection water passes through draining pump qualified discharge.
After a whole set of advanced treatment process flow processing, oil field reinjection water water quality：Oil content is 10 mg/L, suspension It is 2 mg/L, effluent quality reaches the water standard of oil field reinjection water.
Embodiment 2：
The oil extraction waste water in Xinjiang minery is handled, the water quality of before processing oil extraction waste water is：Oil content is 42 Mg/L, suspension is 38 mg/L.Processing procedure is as follows：Waste water passes sequentially through one-level intake pump, filter water inlet, multimedium Filter, water-locator, ceramics filling area, active carbon filler area, filter delivery port, backwashing pump, backwash water inlet, recoil Wash out the mouth of a river, intermediate pool, two grades of intake pumps, catalytic tower water inlet, ozone catalytic tower, kaolin ozone catalyst, ozone hairs Raw device, ozone pipeline and air inlet, ozone diffuser, ozone quencher and gas outlet, catalytic tower delivery port, draining pump.
Main processing steps are divided into：
（1）Filtering area：Pending oil field reinjection water enters many by one-level intake pump from pipeline from filter water inlet Water-locator aperture in medium filter, filter is 30 mm, then by ceramics filling area and active carbon filler area.Haydite The volume ratio in packing area and active carbon filler area is 1: 8.Behind two packing areas, enter middle by filter delivery port Pond.Residence time of the oil field reinjection water in more medium filter is 60 min, and more medium filter hair backwashing period is 24 h.Clear water enters Filter Back Washing water inlet from backwashing pump and flowed out from backwashing water delivery port during backwash, whole anti- Washing time is 10 min.The major function in ceramics filling area is to remove particulate matter big in oil field reinjection water and prevent upper strata The loss of filtrate.
（2）Ozone catalytic tower：Behind two packing areas, suspension and impurity in oil field reinjection water are effectively gone Remove, intermediate pool is then entered by filter delivery port.Waste water in intermediate pool is by two grades of intake pumps from ozone catalytic The water inlet on tower top enters, the kaoline loaded ozone catalyst filler of filling inside catalytic tower.The source of the gas of ozone generator is Pure oxygen, the ozone of generation is entered by ozone pipeline and air inlet from catalysis tower bottom, is diffused to and entirely urged by ozone diffuser Change reaction tower, the ozone not being utilized finally is eliminated by ozone quencher, then emptied by gas outlet.Oil field reinjection water exists Residence time in catalytic tower is 20 min, and the filling density of catalyst is 300 g/L, and catalyst volume accounts for whole catalysis tower body Long-pending 65%.After catalytic tower catalysis oxidation, oil field reinjection water is up to standard by draining pump.Ceramics filling particle diameter used is 8 Mm, the porosity is 65%, and density is 300 kg/m3, the MPa of compression strength >=1.5.Active carbon filler particle diameter used is 100 mesh, Specific surface area is 2800 m2/ g, superficial density is 350 kg/m3。
Kaoline loaded ozone catalyst filler used, its feature includes the preparation of modification infusorial earth：
（1）Screening：The mm of particle diameter 20 is chosen, the uniformity is 90% kaolin；
（2）Cleaning：It is that 4% sulfuric acid solution clean 5 times that the kaolin of corresponding particle diameter, which is chosen, with percentage by volume, then with distilling Water is cleaned 5 times, then dries 3h in 115 DEG C of air dry ovens, standby after cooling；
（3）Dipping：Preparation mass concentration is 6% nickel nitrate solution, 8% manganese nitrate solution and 2% ceric ammonium nitrate solution（All with Metallic element Mass Calculation）, then these three solution are with volume ratio 1:1:1 is configured to mixed solution, is added in mixed solution As the mg/L of dispersant 4 hydroxylamine hydrochloride, dipping solution is formed.By kaolin bubble in dipping solution, shaken in 45 DEG C of constant temperature Swing in case with 150 rmp speed concussion, 8 h；Then kaolin is taken out, at room temperature natural air drying；
（4）High temperature sintering：Kaolin is placed in the blast heating case of 120 DEG C of conditions and dries 3 h, places into and is made with nitrogen In the high temperature furnace of protective gas, to be first warming up to 250 DEG C with 15 DEG C/min, constant temperature calcining 3h is then proceeded to 30 DEG C/min liters Warm to 600 DEG C, the h of constant temperature calcining 3, then natural cooling, is placed on the nitric acid that percentage by volume is 50% molten by the kaolin of cooling 2.5 h are soaked in liquid, 4 h are then dried in the blast heating case of 105 DEG C of conditions, natural cooling prepares kaolin and urged Agent.Metal oxide supported dose rate is 18% in prepared kaoline loaded ozone catalyst, and porosity is 80%, compares surface Product is 50 m2/g。
After catalytic tower catalysis oxidation, oil field reinjection water passes through draining pump qualified discharge.
After a whole set of advanced treatment process flow processing, oil field reinjection water water quality：Oil content is 8 mg/L, and suspension is 1.5 mg/L, effluent quality reaches the water standard of oil field reinjection water.

Claims (4)

1. the advanced treatment process system of a kind of oil field reinjection water, it is characterised in that including one-level intake pump, filter water inlet Mouth, more medium filter, water-locator, ceramics filling area, active carbon filler area, filter delivery port, backwashing pump, backwash into The mouth of a river, backwash delivery port, intermediate pool, two grades of intake pumps, catalytic tower water inlet, ozone catalytic tower, kaoline loaded ozone Catalyst, ozone generator, ozone pipeline and air inlet, ozone diffuser, ozone quencher and gas outlet, catalytic tower water outlet Mouth, draining pump；Comprise the following steps：
（1）Filtering area：Pending oil field reinjection water enters multimedium by one-level intake pump from pipeline from filter water inlet Water-locator aperture in filter, filter is 25~75 mm, then by ceramics filling area and active carbon filler area；Haydite The volume ratio in packing area and active carbon filler area is 1:(5~8)；Behind two packing areas, entered by filter delivery port Intermediate pool；Residence time of the oil field reinjection water in more medium filter is 40~120 min, more medium filter hair recoil The cycle is washed for 8~24 h；Clear water enters Filter Back Washing water inlet from backwashing water delivery port from backwashing pump during backwash Outflow, whole backwashing time is 5~10 min；
（2）Ozone catalytic tower：Waste water in intermediate pool is entered by two grades of intake pumps from the water inlet on ozone catalytic tower top, The kaoline loaded ozone catalyst filler of filling inside catalytic tower；The source of the gas of ozone generator is pure oxygen, and the ozone of generation passes through Ozone pipeline and air inlet enter from catalysis tower bottom, and whole catalytic tower is diffused to by ozone diffuser, finally not by The ozone utilized is eliminated by ozone quencher, is then emptied by gas outlet；Residence time of the oil field reinjection water in catalytic tower For 20~60min, the filling density of catalyst is 100~300 g/L, catalyst volume account for whole catalytic tower volume 50~ 75%；After catalytic tower catalysis oxidation, oil field reinjection water is up to standard by draining pump；
The preparation of described kaoline loaded ozone catalyst filler：
（1）Screening：The mm of particle diameter 5~25 is chosen, the uniformity is 85%~98% kaolin；
（2）Cleaning：The kaolin for choosing corresponding particle diameter is cleaned 5 times with percentage by volume for 2~5% sulfuric acid solutions, then uses distilled water Cleaning 5 times, then dries 3~5h in 105~120 DEG C of air dry ovens, standby after cooling；
（3）Dipping：Preparation mass concentration is that 5~10% nickel nitrate solutions, 3~8% manganese nitrate solutions and 1~4% ammonium ceric nitrate are molten Liquid, all with metallic element Mass Calculation, then these three solution are with volume ratio 1：1：1 is configured to mixed solution, in mixed solution The middle hydroxylamine hydrochloride added as the mg/L of dispersant 2~5, forms dipping solution；By kaolin bubble in dipping solution, 35 5~10h is shaken with 120~160rmp speed in~45 DEG C of isothermal vibration case；Then kaolin is taken out, it is natural at room temperature Air-dry；
（4）High temperature sintering：By kaolin be placed in 105~120 DEG C of blast heating casees dry 2~5h, place into nitrogen as In the high temperature furnace of protective gas, be first warming up to 200~300 DEG C with 15-20 DEG C/min, 2~3h of constant temperature calcining, then proceed to 30-45 DEG C/min is warming up to 600 DEG C, the h of constant temperature calcining 3~5, then natural cooling；The kaolin of cooling is placed on volume basis Then number dries 2~5 h to soak 1~3 h in 50~75% salpeter solution in 105~120 DEG C of blast heating casees, natural Cooling, prepares kaoline loaded ozone catalyst.
2. the advanced treatment process system of oil field reinjection water as claimed in claim 1, it is characterised in that the ceramics filling grain Footpath is 2~10 mm, and the porosity is 40~65%, and density is 300~500 kg/m3, compression strength >=1.5MPa.
3. the advanced treatment process system of oil field reinjection water as claimed in claim 1, it is characterised in that described activated carbon is filled out Material particle diameter is 50~120 mesh, and specific surface area is 2400~3600 m2/ g, superficial density is 350~600 kg/m3。
4. the advanced treatment process system of oil field reinjection water as claimed in claim 1, it is characterised in that described prepares Metal oxide supported dose rate is 8~20% in kaoline loaded ozone catalyst, and porosity is 80~90%, and specific surface area is 50 ~65 m2/g。
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CN112624407A (en) * 2020-12-17 2021-04-09 华东理工大学 Deep purification method and device for oilfield acidizing and fracturing wastewater

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