CN109160666A - A kind of fracturing outlet liquid process for reclaiming - Google Patents
A kind of fracturing outlet liquid process for reclaiming Download PDFInfo
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- CN109160666A CN109160666A CN201811171796.1A CN201811171796A CN109160666A CN 109160666 A CN109160666 A CN 109160666A CN 201811171796 A CN201811171796 A CN 201811171796A CN 109160666 A CN109160666 A CN 109160666A
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- liquid
- fracturing outlet
- magnetic
- outlet liquid
- flocculating agent
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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
- C02F1/44—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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention discloses a kind of fracturing outlet liquid process for reclaiming, it is characterised in that steps are as follows: a, fracturing outlet liquid being sent into coagulation reactor and is reacted, magnetic kind, flocculating agent and flocculation aid are added during reaction；B, the fracturing outlet liquid of end of reaction is separated by solid-liquid separation；C, liquid obtained in separation of solid and liquid is filtered；D, sterilization processing is carried out to filtered liquid；E, the liquid after sterilization is carried out with liquid reuse；This method is sterilized by improving coagulation and solid-liquid separation effect, and using multistage filtering mode and electrolysis water, realizes the advanced treating of fracturing outlet liquid, the reuse liquid index of acquisition can reach the standard requirements of secondary use.
Description
Technical field
The present invention relates to the utilization technology fields of fracturing fluid in oil drilling industry.
Background technique
In oilfield operation, fracturing technique is played an important role.Not only add containing a large amount of chemistry in fracturing outlet liquid
Add agent, also carries organic and inorganic compound, bacterium, the heavy metal in stratum during the row of returning, pollutant kind is more,
Complicated component, concentration are high, viscosity is big, COD high, salinity is high, stability is high, and such as processing not yet in effect will cause regional environment
Serious pollution.
The processing for returning drain at present can reach discharge standard substantially, but be a lack of the further investigation that counterweight utilizes again, secondary
The parameter request utilized is much higher than discharge standard, directly carries out reuse according to existing processing mode, will injure to stratum,
It needs to be improved, realizes scientific and effective resource reutilization.
Publication No. CN104692555A, publication date are that the Chinese patent literature on June 10th, 2015 discloses a kind of pressure
It splits and returns drain recovery processing reuse method, it is characterised in that the following steps are included: step a, fracturing outlet liquid are by gas-liquid point
Gas-liquid separation is carried out from device；Step b, liquid enter sand setting oil removing pot carry out desanding remove condensate；Step c, it will be gone by pump
Except liquid is pumped into deionization tank in the tank of condensate, metal ion is removed；Step d, treated, and liquid is carried out through filtering tank
Filtering, further removal precipitates；Step e, liquid after filtering enters fracturing outlet liquid storage tank, sampled from tank into
The full ion analysis of row, supplements the additive of missing, allows to meet fracturing fluid construction requirement.
But using above patent document as the prior art of representative, when carrying out coagulating to fracturing outlet liquid, effect
Fruit is not obvious, and it is undesirable also to allow for subsequent solid-liquid splitting effect.The items for the fracturing outlet liquid that finally makes that treated
Index is not able to satisfy the standard requirements of secondary use.
Summary of the invention
The present invention is directed to for defect and deficiency present in the above-mentioned prior art, provide at a kind of fracturing outlet liquid reuse
Reason method, this method are sterilized by improving coagulation and solid-liquid separation effect, and using multistage filtering mode and electrolysis water, are realized
The advanced treating of fracturing outlet liquid, the reuse liquid index of acquisition can reach the standard requirements of secondary use.
The present invention is realized by using following technical proposals:
A kind of fracturing outlet liquid process for reclaiming, it is characterised in that steps are as follows:
A, fracturing outlet liquid is sent into coagulation reactor and is reacted, magnetic kind, flocculating agent are added during reaction and is helped
Solidifying agent；
B, the fracturing outlet liquid of end of reaction is separated by solid-liquid separation；
C, liquid obtained in separation of solid and liquid is filtered；
D, sterilization processing is carried out to filtered liquid；
E, the liquid after sterilization is carried out with liquid reuse；
In the step a, magnetic kind is the water process magnetic powder that magnetic material is greater than 95%, and partial size is less than 40 μm；Flocculating agent and flocculation aid
It is added in the form of a solution by metering pump, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；It adds
When, the flocculating agent of 200 ~ 260ppm magnetic kind and 20 ~ 50ppm is first added, is stirred to react 2 ~ 4min；Add the magnetic of 150 ~ 180ppm
The flocculation aid of kind and 3 ~ 6ppm, reverse agitating function react 3 ~ 5min.
In the step b, it is separated by solid-liquid separation and is realized using magnetic separator, disk 1300 ~ 1600mm of diameter, disk spacing 20
~ 40mm, 0.5 ~ 3r/min of disk running speed.
In the step c, primary filter is carried out by two bag filters in parallel first, then by multiple super
Filter unit is filtered, and ultra filtration unit is PVDF ultrafiltration membrane component；
In the step d, sterilization is completed in electrolytic saltwater sterilizing unit.
The water process magnetic powder is specifically the Fe for including wheat straw bar powder3O4。
The flocculating agent is specifically aluminum sulfate.
The flocculation aid is specifically polyacrylamide.
The bag filter is specifically PP filter bag.
Compared with prior art, the beneficial effects obtained by the present invention are as follows it is as follows:
1, by adding appropriate magnetic kind, flocculating agent, flocculation aid to coagulating, and the reaction time is controlled, front and back uses
Opposite mixing direction effectively improves the coagulating effect for returning drain, and making to return namagnetic substance in drain has magnetic or make
The magnetic enhancement of weak magnetic substance, and coagulant in conjunction with pollutant and flocculation aid can be easier to be captured by magnetic attraction, be
Subsequent magnetic separating device, which be separated by solid-liquid separation, provides good separation basis；The disk specification of magnetic separating device selects, favorably
It is captured in carrying out effective absorption, reaches preferable solid-liquid separation effect；
2, when filtering, initial filter is carried out by bag filter first, initial filter is completed using PP filter bag；Then pass through PVDF ultrafiltration membrane
Component realizes filtering, effectively ensures the effect of filtering, and sterilizing unit uses electrolytic saltwater sterilizing unit, especially to returning drain
Harmful substance have specific aim, effectively ensure entire disinfection effect；
3, reuse liquid is obtained by this method, referring to specific embodiment as it can be seen that its pH tends to be neutral, between 6.5 ~ 7.5, oil-containing
≤ 1mg/L, SS≤7mg/L, COD≤135mg/L, bacterium≤19 SRB/ml, bacterium≤14 TGB/ml, bacterium≤16 FB/ml, always
Iron≤9mg/L, turbidity≤8 NTU.
Specific embodiment
Embodiment one
(1), pressure is returned liquid and is sent into coagulation reactor and react, magnetic kind, flocculating agent, flocculation aid are added in reaction.Magnetic kind is
Magnetic material is greater than 95% water process magnetic powder, and partial size is less than 40 μm；Flocculating agent and flocculation aid are thrown by metering pump in the form of a solution
Add, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；When adding, first be added 250ppm magnetic kind and
The flocculating agent of 20ppm, is stirred to react 3min；The magnetic kind of 180ppm and the flocculation aid of 5ppm are added, reverse agitating function reacts 4min.
(2), it is separated by solid-liquid separation after completing step (1)；It is separated by solid-liquid separation and is realized using magnetic separator, disk diameter
1400mm, disk spacing 25mm, disk running speed 2r/min.
(3), liquid obtained in step (2) is filtered；It is carried out first by two bag filters in parallel primary
Filtering, is then filtered by multiple ultra filtration units, and ultra filtration unit is PVDF ultrafiltration membrane component；
(4), step (3) filtered liquid is sterilized, and sterilization is completed in electrolytic saltwater sterilizing unit；
(5), the liquid after step (4) sterilization carries out realizing reuse with liquid；
Specifically, magnetic powder is the Fe for including wheat straw bar powder3O4.Flocculating agent is aluminum sulfate.Flocculation aid is polyacrylamide.Bag
Formula filter is PP filter bag.
Through detecting, effluent quality is as follows:
| Serial number | Project | Effluent quality |
| 1 | pH | 6.8 |
| 2 | Oil-containing, mg/L | 0.6 |
| 3 | SS, mg/L | 5 |
| 4 | COD, mg/L | 120 |
| 5 | SRB bacterium, a/ml | 17 |
| 6 | TGB bacterium, a/ml | 14 |
| 7 | FB bacterium, a/ml | 16 |
| 8 | Total iron, mg/L | 7 |
| 9 | Turbidity, NTU | 5 |
Embodiment two
(1), pressure is returned liquid and is sent into coagulation reactor and react, magnetic kind, flocculating agent, flocculation aid are added in reaction.Magnetic kind is
Magnetic material is greater than 95% water process magnetic powder, and partial size is less than 40 μm；Flocculating agent and flocculation aid are thrown by metering pump in the form of a solution
Add, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；When adding, first be added 200ppm magnetic kind and
The flocculating agent of 50ppm, is stirred to react 2min；The magnetic kind of 150ppm and the flocculation aid of 3ppm are added, reverse agitating function reacts 5min.
(2), it is separated by solid-liquid separation after completing step (1)；It is separated by solid-liquid separation and is realized using magnetic separator, disk diameter
1500mm, disk spacing 40mm, disk running speed 0.5r/min.
(3), liquid obtained in step (2) is filtered；It is carried out first by two bag filters in parallel primary
Filtering, is then filtered by multiple ultra filtration units, and ultra filtration unit is PVDF ultrafiltration membrane component；
(4), step (3) filtered liquid is sterilized, and sterilization is completed in electrolytic saltwater sterilizing unit；
(5), the liquid after step (4) sterilization carries out realizing reuse with liquid；
Specifically, magnetic powder is the Fe for including wheat straw bar powder3O4.Flocculating agent is aluminum sulfate.Flocculation aid is polyacrylamide.Bag
Formula filter is PP filter bag.
Through detecting, effluent quality is as follows:
| Serial number | Project | Effluent quality |
| 1 | pH | 7.1 |
| 2 | Oil-containing, mg/L | 0.7 |
| 3 | SS, mg/L | 6 |
| 4 | COD, mg/L | 87 |
| 5 | SRB bacterium, a/ml | 13 |
| 6 | TGB bacterium, a/ml | 11 |
| 7 | FB bacterium, a/ml | 12 |
| 8 | Total iron, mg/L | 8 |
| 9 | Turbidity, NTU | 6 |
Embodiment three
(1), pressure is returned liquid and is sent into coagulation reactor and react, magnetic kind, flocculating agent, flocculation aid are added in reaction.Magnetic kind is
Magnetic material is greater than 95% water process magnetic powder, and partial size is less than 40 μm；Flocculating agent and flocculation aid are thrown by metering pump in the form of a solution
Add, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；When adding, first be added 260ppm magnetic kind and
The flocculating agent of 40ppm, is stirred to react 4min；The magnetic kind of 160ppm and the flocculation aid of 6ppm are added, reverse agitating function reacts 3min.
(2), it is separated by solid-liquid separation after completing step (1)；It is separated by solid-liquid separation and is realized using magnetic separator, disk diameter
1600mm, disk spacing 20mm, disk running speed 3r/min.
(3), liquid obtained in step (2) is filtered；It is carried out first by two bag filters in parallel primary
Filtering, is then filtered by multiple ultra filtration units, and ultra filtration unit is PVDF ultrafiltration membrane component；
(4), step (3) filtered liquid is sterilized, and sterilization is completed in electrolytic saltwater sterilizing unit；
(5), the liquid after step (4) sterilization carries out realizing reuse with liquid；
Specifically, magnetic powder is the Fe for including wheat straw bar powder3O4.Flocculating agent is aluminum sulfate.Flocculation aid is polyacrylamide.Bag
Formula filter is PP filter bag.
Through detecting, effluent quality is as follows:
| Serial number | Project | Effluent quality |
| 1 | pH | 7.3 |
| 2 | Oil-containing, mg/L | 0.9 |
| 3 | SS, mg/L | 7 |
| 4 | COD, mg/L | 135 |
| 5 | SRB bacterium, a/ml | 19 |
| 6 | TGB bacterium, a/ml | 12 |
| 7 | FB bacterium, a/ml | 13 |
| 8 | Total iron, mg/L | 7 |
| 9 | Turbidity, NTU | 5 |
Example IV
(1), pressure is returned liquid and is sent into coagulation reactor and react, magnetic kind, flocculating agent, flocculation aid are added in reaction.Magnetic kind is
Magnetic material is greater than 95% water process magnetic powder, and partial size is less than 40 μm；Flocculating agent and flocculation aid are thrown by metering pump in the form of a solution
Add, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；When adding, first be added 230ppm magnetic kind and
The flocculating agent of 30ppm, is stirred to react 2.5min；170ppm magnetic kind and the flocculation aid of 4ppm are added, reverse agitating function reacts 3min.
(2), it is separated by solid-liquid separation after completing step (1)；It is separated by solid-liquid separation and is realized using magnetic separator, disk diameter
1500mm, disk spacing 25mm, disk running speed 1r/min.
(3), liquid obtained in step (2) is filtered；It is carried out first by two bag filters in parallel primary
Filtering, is then filtered by multiple ultra filtration units, and ultra filtration unit is PVDF ultrafiltration membrane component；
(4), step (3) filtered liquid is sterilized, and sterilization is completed in electrolytic saltwater sterilizing unit；
(5), the liquid after step (4) sterilization carries out realizing reuse with liquid；
Specifically, magnetic powder is the Fe for including wheat straw bar powder3O4.Flocculating agent is aluminum sulfate.Flocculation aid is polyacrylamide.Bag
Formula filter is PP filter bag.
Through detecting, effluent quality are as follows:
| Serial number | Project | Effluent quality |
| 1 | pH | 7 |
| 2 | Oil-containing, mg/L | 0.8 |
| 3 | SS, mg/L | 5 |
| 4 | COD, mg/L | 102 |
| 5 | SRB bacterium, a/ml | 14 |
| 6 | TGB bacterium, a/ml | 11 |
| 7 | FB bacterium, a/ml | 15 |
| 8 | Total iron, mg/L | 9 |
| 9 | Turbidity, NTU | 8 |
Claims (8)
1. a kind of fracturing outlet liquid process for reclaiming, it is characterised in that steps are as follows:
A, fracturing outlet liquid is sent into coagulation reactor and is reacted, magnetic kind, flocculating agent are added during reaction and is helped
Solidifying agent；
B, the fracturing outlet liquid of end of reaction is separated by solid-liquid separation；
C, liquid obtained in separation of solid and liquid is filtered；
D, sterilization processing is carried out to filtered liquid；
E, the liquid after sterilization is carried out with liquid reuse；
In the step a, magnetic kind is the water process magnetic powder that magnetic material is greater than 95%, and partial size is less than 40 μm；Flocculating agent and flocculation aid
It is added in the form of a solution by metering pump, the outfit concentration of flocculating agent is 12%, and the outfit concentration of flocculation aid is 0.15%；It adds
When, the flocculating agent of 200 ~ 260ppm magnetic kind and 20 ~ 50ppm is first added, is stirred to react 2 ~ 4min；Add the magnetic of 150 ~ 180ppm
The flocculation aid of kind and 3 ~ 6ppm, reverse agitating function react 3 ~ 5min.
2. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: in the step b, solid-liquid
Separation is using magnetic separator realization, disk 1300 ~ 1600mm of diameter, disk 20 ~ 40mm of spacing, 0.5 ~ 3r/min of disk running speed.
3. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: in the step c, first
Primary filter is carried out by two bag filters in parallel, is then filtered by multiple ultra filtration units, ultra filtration unit is
PVDF ultrafiltration membrane component.
4. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: in the step d, sterilization
It is to be completed in electrolytic saltwater sterilizing unit.
5. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: the water process magnetic powder tool
Body is the Fe to include wheat straw bar powder3O4。
6. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: the flocculating agent is specifically
Aluminum sulfate.
7. fracturing outlet liquid process for reclaiming according to claim 1, it is characterised in that: the flocculation aid is specifically
Polyacrylamide.
8. fracturing outlet liquid process for reclaiming according to claim 3, it is characterised in that: the bag type filtering utensil
Body is PP filter bag.
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|---|---|---|---|
| CN201811171796.1A CN109160666A (en) | 2018-10-09 | 2018-10-09 | A kind of fracturing outlet liquid process for reclaiming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171796.1A CN109160666A (en) | 2018-10-09 | 2018-10-09 | A kind of fracturing outlet liquid process for reclaiming |
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| Publication Number | Publication Date |
|---|---|
| CN109160666A true CN109160666A (en) | 2019-01-08 |
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ID=64877575
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| KR20040084857A (en) * | 2003-03-26 | 2004-10-06 | 산요덴키가부시키가이샤 | Water treatment apparatus and water treatment method using the same |
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Application publication date: 20190108 |