CN115108651A - Method for treating acidizing fracturing flowback waste liquid into reinjection water - Google Patents
Method for treating acidizing fracturing flowback waste liquid into reinjection water Download PDFInfo
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- 239000002699 waste material Substances 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000006004 Quartz sand Substances 0.000 claims abstract description 14
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010457 zeolite Substances 0.000 claims abstract description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 description 18
- -1 fluorine ions Chemical class 0.000 description 16
- 239000012535 impurity Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910001424 calcium ion Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000006386 neutralization reaction Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing 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
Abstract
The invention belongs to the technical field of gas field petroleum waste liquid treatment, and particularly relates to a method for treating acidizing fracturing flowback waste liquid into reinjection water. The method comprises the following steps: the method comprises the following steps: adding fly ash into the acidized fracturing flow-back waste liquid, stirring to enable the pH value to be 6-7, and performing primary filtration by using a fiber bundle; step two: adding inorganic salt into the waste liquid treated in the first step, stirring for 1-1.5h, observing the pH value to make the pH value between 8 and 9, and carrying out secondary filtration; step three: adding NaOH, stirring, observing the pH value, adjusting the pH value to 11-12, and filtering for the third time by using quartz sand; step four: standing the acidified fractured flow-back waste liquid after the third filtration for 12-24 hours, and carrying out fourth filtration; step five: and D, adding zeolite into the flowback waste liquid treated in the step four, stirring, and performing fifth filtration by using quartz sand to obtain reinjection water. The method skillfully uses the characteristic of the fly ash with low price, so that the suspended solid content of the reinjection water reaches the highest first-level index.
Description
Technical Field
The invention belongs to the technical field of gas field petroleum waste liquid treatment, and particularly relates to a method for treating acidizing fracturing flowback waste liquid into reinjection water.
Background
The acidizing fracturing flow-back waste liquid is a main pollutant in the fracturing operation in the gas field exploitation process; in order to improve the fracturing efficiency, various additives are added into the acidizing fracturing fluid, so that the contents of petroleum, suspended matters, heavy metal ions and ammonia nitrogen in the acidizing fracturing flowback waste liquid also severely exceed the standard, and the pH value is mostly strong acid. Such a wide variety of contaminants can be extremely harmful to the environment if an effective disposal means is lacking.
The prior art generally adopts a method that a porous surface of an adsorbent adsorbs and removes pollutants or adopts a chemical additive to remove the pollutants. The latest treatment technology for suspended matters is mainly a flocculation method through electrochemical oxidation and a microfiltration membrane filtration method, and the suspended matters are less than 3 mg/L. According to the main control indexes of the recommended water quality of the China oil and gas industry standard SY/T5329-2012, the method can only reach the third-level index, namely less than or equal to 5.0 mg/L.
The highest first-level index of the suspended solid content is less than or equal to 1.0mg/L, which is difficult to achieve by the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, indexes such as suspended solid content, median diameter of suspended particles, oil content and the like of the acidizing fracturing flow-back waste liquid after treatment all reach the highest indexes, so that the flow-back waste water is really changed into standard reinjection water to be continuously used.
The technical problem to be solved by the invention is realized by the following technical scheme:
comprises the following steps of (a) preparing a solution,
the method comprises the following steps: taking 500ml of acidized fracturing flow-back waste liquid, adding 20g-30g of fly ash, stirring for 1-2 hours, observing the pH value to make the pH value between 6-7, and stopping stirring; performing first filtration by using a fiber bundle;
step two: adding 3.5-5g of inorganic salt into the waste liquid treated in the first step, stirring for 1-1.5h, observing the pH value to make the pH value between 8 and 9, and then carrying out secondary filtration by using quartz sand;
step three: adding NaOH into the waste liquid treated in the step two, stirring for 1-1.5h, observing the pH value, adjusting the pH value to 11-12, and then filtering for the third time by using quartz sand;
step four: standing the acidized fracturing flow-back waste liquid after the third filtration for 12-24 hours, and then carrying out fourth filtration on the acidized fracturing flow-back waste liquid by using quartz sand;
step five: and (3) adding 3-5g of zeolite into the flowback waste liquid treated in the fourth step by taking 500ml as a unit, stirring for 1-2 hours, and performing fifth filtration by using quartz sand to obtain finally usable recycled water.
As a further preferred description of the present invention: in the first step, the fiber bundle is placed for 3-5 hours before the first filtration.
As a further preferred illustration of the invention: the inorganic salt includes a Na salt, a K salt, or a NH4 salt.
As a further preferred description of the present invention: the Na salt is sodium bicarbonate.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the method, firstly, the fly ash is added, the fly ash contains silicon dioxide, calcium oxide, aluminum oxide, iron oxide and the like, and the components in the fly ash and hydrofluoric acid in the returned waste liquid are utilized to carry out neutralization reaction to generate precipitates, so that fluorine ions are further removed; specifically, if calcium oxide is changed into calcium hydroxide when meeting water, the calcium hydroxide reacts with fluoride ions to generate calcium fluoride precipitate, and more importantly, HF in the acidified flowback waste liquid is reacted by calcium ions, aluminum ions and iron ions to generate precipitate, so that a flocculating agent is replaced. Filtering to remove fluorine ions;
(2) the fly ash in the invention also contains adsorptive material substances such as glass bodies, carbon and the like, has a plurality of holes to have adsorption effect, and simultaneously has very low price, thereby greatly saving the waste liquid treatment cost;
(3) the method skillfully utilizes the fly ash with low price to treat the HF in the returned waste liquid, so that the HF replaces the existing flocculating agent with high price in a precipitation mode, and the cost is greatly reduced;
(4) in the first step of the invention, the pH value of the flowback waste liquid reaches a neutral level by controlling the addition amount of the fly ash and the stirring action and time, so as to thoroughly remove fluorine ions;
(5) meanwhile, the acidizing fracturing flowback waste liquid carries clay which mainly shows electronegativity, and calcium ions, aluminum ions and iron ions dissociated from the fly ash are subjected to an electric neutralization reaction to compress an electric double layer to generate a condensation effect, so that clay and other impurity precipitates are generated, and the precipitates also have a net catching effect and can adsorb fine impurities in the acidizing liquid, so that the impurity treatment effect is optimal;
(6) in the second step of the invention, inorganic salt is added to adjust the pH value to make the pH value in a weakly alkaline state so as to generate precipitate to remove calcium ions, iron ions and the like.
Drawings
FIG. 1 is a process flow diagram of the process of the present invention;
FIG. 2 is an analytical test report of the reinjection water after the treatment of the acidized fracturing flowback wastewater by the method of the invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
The implementation process is as follows:
this example was carried out in the following manner in order to obtain a reinjection water of the highest first-level index in the national standard. Specifically, the treatment of the acid fracturing flow-back wastewater is carried out through the following steps:
taking 500ml of acidized fracturing flow-back waste liquid, gradually adding 20-30 g of fly ash into the flow-back waste liquid, and continuously stirring for 1-2 hours; observing pH to 6-7, keeping at neutral state, stopping stirring, standing for 3-5 hr, and filtering with fiber bundle;
here, the fly ash with very low price is adopted, because the fly ash contains silicon dioxide, calcium oxide, aluminum oxide, ferric oxide and other components, the calcium oxide is changed into calcium hydroxide when meeting water, and the calcium hydroxide has a neutralization effect by reacting with acid, so that the fluorine ions are further removed by precipitation;
in more detail, HF in the acidizing fracturing flowback waste liquid is reacted by calcium ions, aluminum ions and iron ions to generate precipitates, so that a flocculating agent is replaced; meanwhile, the glass body and the carbon in the fly ash have more holes and have adsorption effect, so that more impurities in the waste liquid can be adsorbed and removed;
in addition, the acidized fracturing flow-back waste liquid carries clay which mainly shows electronegativity, and calcium ions, aluminum ions and iron ions dissociated from the fly ash are subjected to an electric neutralization reaction to compress an electric double layer to generate a condensation effect, so that clay and other impurity precipitates are generated, and the precipitates also have a net-catching effect to adsorb fine impurities in the acidized liquid, so that the impurities can be removed more conveniently;
and step two, adding a proper amount of inorganic salt (such as sodium bicarbonate or potassium bicarbonate) such as Na salt (3.5-5g) or K salt or NH4 salt and the like into the waste liquid treated in the step one, stirring for 1-1.5h, observing the pH value to be 8-9, and then carrying out secondary filtration on the precipitate by using quartz sand.
The inorganic salt is added in order to react with mainly calcium ions, iron ions, magnesium ions to produce a large amount of precipitate.
And step three, adding a proper amount of NaOH into the waste liquid treated in the step two, stirring for 1-1.5 hours, observing the pH value, adjusting the pH value to 11-12, reacting the NaOH with residual metal ions to generate a precipitate, and filtering the precipitate for three times by using quartz sand.
And step four, placing the acidized fracturing flow-back waste liquid after the third filtration for 12-24h, continuing the reaction of chemical precipitation, and fully reacting inorganic salt and NaOH with metal ions, wherein the metal ions are wrapped by a large amount of organic matters, so the reaction is slow, and the precipitate is filtered by quartz sand for four times.
And step five, adding 3-5g of zeolite into every 500ml of waste liquid, stirring for 1-2h, adsorbing inorganic salts and organic matters in the waste liquid, and filtering the precipitate for five times by using quartz sand to obtain reinjection water meeting the national standard.
The reinjection water with the highest standard that the highest first-level index of the suspended solid content is less than or equal to 1.0mg/L is prepared by the method and can be reused.
In the first step of the method, it is noted that if no fly ash is added, fluoride ions cannot be removed, and the reinjection water after treatment is discharged into the stratum and then reacts with high-valence metal ions in the stratum to easily generate precipitates and easily block the stratum, so the acidizing, fracturing and flowback wastewater needs to be treated to enable the wastewater to reach the highest first-level index of the content of suspended solids in the main control index of water quality, which is recommended by the Chinese petroleum and natural gas industry standard SY/T5329-2012, to be less than or equal to 1.0 mg/L.
Presented in Table 1 below are multi-combination examples of acidified waste streams with sodium salt addition
TABLE 1
Presented in Table 2 below is a multi-combination implementation of the acidification of waste streams with potassium salt addition
TABLE 2
Presented in Table 3 below is the addition of NH 4 Multiple combination embodiment of salt treatment of acidified waste streams
TABLE 3
It should be noted that, when the fly ash is added at the beginning, the fly ash can be added and stirred at the same time, which is beneficial to the reaction and the observation of the pH value; the glass body and the carbon in the fly ash mainly adsorb suspended matters and precipitates, because the adsorption of the glass body, the carbon and the like has no selectivity, the glass body, the carbon and the like can adsorb both dissolubility and insolubility, and as long as the surface energy can be reduced, the glass body, the carbon and the like can adsorb both, so that impurities such as suspended matters can be removed; the first step is mainly neutralization reaction, the adsorption treatment is auxiliary treatment, and the adsorption treatment is more beneficial to the subsequent treatment; the reinjection water obtained after the final treatment cannot contain high suspended matters, if the suspended matters are too much, the stratum can be blocked, if the suspended matters are too much, the organic matters cannot be too much, and if the organic matters are too much, the reinjection water can be absorbed by microorganisms after being reinjected to the bottom layer, and the microorganisms absorb more substances and can also block the stratum.
The waste liquid is changed into neutral through the fly ash, and the waste liquid is not precipitated after being reinjected into a stratum, or is not reacted with any substance after being reinjected into the stratum to generate precipitate; the suspended matters in the treated reinjection water cannot be increased, and the reinjection water is in a slightly alkaline or alkaline state by adjusting the pH value and then the impurities in the reinjection water are removed.
The following table 4 is the water quality control index of the Chinese oil and gas industry standard SY/T5329-2012:
TABLE 4
Table 5 is a detection report table of the reinjection water obtained after the acidizing fracturing flowback wastewater is treated by the method of the present invention:
TABLE 5
By comparing the measurement results in table 5 with the control indexes in table 4, it can be seen that the highest first-order index can be achieved when the method of the present application treats acidified wastewater.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
Claims (4)
1. A method for treating acidizing fracturing flowback waste liquid into reinjection water is characterized by comprising the following steps:
comprises the following steps of (a) carrying out,
the method comprises the following steps: taking 500ml of acidized fracturing flow-back waste liquid, adding 20g-30g of fly ash, stirring for 1-2 hours, observing the pH value to make the pH value between 6-7, and stopping stirring; performing first filtration by using a fiber bundle;
step two: adding 3.5-5g of inorganic salt into the waste liquid treated in the first step, stirring for 1-1.5h, observing the pH value to make the pH value between 8 and 9, and then carrying out secondary filtration by using quartz sand;
step three: adding NaOH into the waste liquid treated in the step two, stirring for 1-1.5h, observing the pH value, adjusting the pH value to 11-12, and then filtering for the third time by using quartz sand;
step four: standing the acidized fracturing flow-back waste liquid after the third filtration for 12-24 hours, and then carrying out fourth filtration on the acidized fracturing flow-back waste liquid by using quartz sand;
step five: and (3) adding 3-5g of zeolite into the flowback waste liquid treated in the fourth step by taking 500ml as a unit, stirring for 1-2 hours, and performing fifth filtration by using quartz sand to obtain finally usable recycled water.
2. The method for treating the acidized fracturing flow-back waste liquid into reinjection water as claimed in claim 1, wherein the method comprises the following steps: in the first step, the fiber bundle is placed for 3-5 hours before the first filtration.
3. The method for treating the acidized fracturing flow-back waste liquid into reinjection water as claimed in claim 2, wherein the steps of: the inorganic salt includes a Na salt, a K salt, or a NH4 salt.
4. The method for treating the acidized fracturing flow-back waste liquid into reinjection water as claimed in claim 3, wherein the steps of: the Na salt is sodium bicarbonate.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838063A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for treating desulfurization wastewater by using fly ash |
| CN102267768A (en) * | 2011-07-06 | 2011-12-07 | 西北农林科技大学 | Lime-fly ash combined treatment method for high density fluorine-containing waste water |
| CN102701352A (en) * | 2012-06-21 | 2012-10-03 | 青岛理工大学 | Method for treating reclaimed water reused as circulating cooling water of power plant |
| CN107265580A (en) * | 2016-04-07 | 2017-10-20 | 杨祺 | A kind of method of processing oil field acidic fracturing fluid sewage |
| CN108002580A (en) * | 2017-09-22 | 2018-05-08 | 中冶长天国际工程有限责任公司 | A kind of acidic flue gas treatment of waste water from washing and application thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838063A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for treating desulfurization wastewater by using fly ash |
| CN102267768A (en) * | 2011-07-06 | 2011-12-07 | 西北农林科技大学 | Lime-fly ash combined treatment method for high density fluorine-containing waste water |
| CN102701352A (en) * | 2012-06-21 | 2012-10-03 | 青岛理工大学 | Method for treating reclaimed water reused as circulating cooling water of power plant |
| CN107265580A (en) * | 2016-04-07 | 2017-10-20 | 杨祺 | A kind of method of processing oil field acidic fracturing fluid sewage |
| CN108002580A (en) * | 2017-09-22 | 2018-05-08 | 中冶长天国际工程有限责任公司 | A kind of acidic flue gas treatment of waste water from washing and application thereof |
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