CN105417705A - Fracturing flowback fluid biological processing method based on BESI technology - Google Patents
Fracturing flowback fluid biological processing method based on BESI technology Download PDFInfo
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- 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
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/00—Controlling or monitoring parameters in water treatment
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Abstract
The invention relates to a fracturing flowback fluid biological processing method based on a BESI technology, and aims to solve the problems that in the prior art, the process cost is high, and the oil content of effluent is high. The method comprises the following steps: step one, introducing fracturing flowback fluid into an anaerobic reaction device (2) through a sewage intake pump to carry out a treatment, wherein the HRT (hydraulic retention time) is 20 to 28 hours; step two, introducing the fracturing flowback fluid processed in the step one into a facultative anaerobic reaction device (3), wherein the HRT is 20 to 28 hours; step three, introducing the fracturing flowback fluid processed in the step two into an aerobic reaction device (4), wherein the HRT is 44 to 52 hours; step four, directly discharging part of fracturing flowback fluid processed in the step three from a discharging pipe, and returning residual fracturing flowback fluid to the facultative anaerobic reaction device (3), wherein the volume ratio of two parts is 1:1. The provided method is applied to the field of biological processing of fracturing flowback fluid.
Description
Technical field
The present invention relates to the fracturing outlet liquid bioremediation based on BESI technology.
Background technology
The exploitation in current China oil field generally enters the middle and later periods, utilizes the mode of frac job significant for the increasing yield and injection in oil field.The fracturing outlet liquid that frac job produces contains a large amount of hazardous and noxious substances, if not treated direct discharge, will produce important impact to the ecosystem around oil field.Because fracturing outlet liquid has complex chemical composition, high viscosity, high COD, high suspended matter, high salinity, the features such as difficult for biological degradation, cause fracturing outlet liquid to be difficult to process.
The process of current fracturing outlet liquid is still in the starting exploratory stage, and does not sum up the easy-to-use treatment process of complete set yet.In research in the past, processing intent for fracturing outlet liquid is all in order to field produces service, thus formulated processing target is mostly the water quality standard reaching re-injection, the water-quality guideline paid close attention to, based on oleaginousness, suspended solids, viscosity, median particle size etc., have ignored the toxicant in fracturing outlet liquid and hazardous and noxious substances.But a problem that can not be ignored is, the oilfield exploitation of current China has entered the High water cut stage, wastewater discharge will be a problem that cannot avoid, therefore make produced water disposal reach new demand that higher water quality requirement is field produces
At present, investigator both domestic and external has carried out large quantifier elimination to the process of fracturing outlet liquid, treatment process mainly comprises: solidification treatment, burning disposal, physico-chemical processes, advanced oxidation processes and biological process, but due to the complicacy of fracturing outlet liquid, actual treatment fracturing outlet liquid often adopts recombining process.Ten thousand li of equalitys adopt in " neutralizing light electrolysis one catalyzed oxidation one charcoal absorption " 4 step process process rivers grinds 140 well acidizing fracturing outlet liquids, and process water outlet reaches the secondary standard in integrated wastewater discharge standard (GB8978-1996).Liu Jun etc. with Dagang Oilfield port, Tianjin dark 11-8 well fracturing outlet liquid for research object, first carry out pre-treatment with coagulation one light electrolysis one absorbing process, carry out advanced treatment with biological process again, water outlet can reach the primary standard in integrated wastewater discharge standard (GB8978-1996).KerriL.Hickenbottom etc. utilize the method process fracturing outlet liquid just permeated, and reclaiming the water yield is 80%, and effectively removes fouling membrane by the method for perviousness back flushing, recover membrane flux.Although above two kinds of methods reach emission standard, processing cost is high, more than 200 yuan, water per ton.
The treatment process of fracturing outlet liquid is varied, cuts both ways.Coagulating sedimentation can carry out pre-treatment to water sample effectively, but easily causes secondary pollution; Membrane filter method can ensure effluent quality effectively, but needs pre-treatment, and easily causes membrane pollution problem; Advanced oxidation processes treatment effect is good, but processing cost is high.
Summary of the invention
The present invention is to solve the problem that prior art cost is high and water outlet oleaginousness is large, and a kind of fracturing outlet liquid bioremediation based on BESI technology proposed.
Based on a fracturing outlet liquid bioremediation for BESI technology, the method detailed process of described biological treatment is:
Step one: fracturing outlet liquid enters anaerobic reaction device (2) through wastewater influent pump (1) through the bottom water-in of anaerobic reaction device (2) and processes, and HRT is 20 ~ 28 hours, and described HRT is the water conservancy residence time;
Step 2: the fracturing outlet liquid after step one processes flows out through anaerobic reaction device (2) top sidewall water outlet, enter amphimicrobian reaction unit (3) by the bottom water-in of amphimicrobian reaction unit (3), HRT is 20 ~ 28 hours;
Step 3: the fracturing outlet liquid after step 2 process flows out through the top sidewall water outlet of amphimicrobian reaction unit (3), enter aerobic reaction device (4) by the bottom water-in of aerobic reaction device (4), HRT is 44 ~ 52 hours;
Step 4: the fracturing outlet liquid after step 3 process is divided into two portions, a part directly flows out through delivery pipe, and a part is back in amphimicrobian reaction unit (3) through reflux pump (6) in addition, and two-part volume ratio is 1:1.
Biochemical method fracturing outlet liquid is adopted to have the advantages such as strong adaptability, flexible operation, processing cost are low, non-secondary pollution because of it, aerobic relative merits of having nothing in common with each other with anaerobic treatment method, a kind of method is depended merely on for difficult degradation sewage be difficult to obtain satisfied treatment effect, in actual applications, normally two kinds of methods combining are got up, according to the principle of " stage treatment, anaerobism are leading, aerobic checks on ", determine rational method flow.The present invention, just based on above thinking, utilizes anaerobic biological treatment to carry out open loop forging chain to hard-degraded substance, increases its biodegradability, and utilize catalytic oxidation process to strengthen effluent quality, propose novel B ESI bioprocess technology to process fracturing outlet liquid.
BESI method is realized by UASB reactor (or anaerobic biological reactor or the combined reactor such as ABR, EGSB, IC)+anaerobic reaction post+contact-oxidation pool, the method tool has the following advantages: (1) UASB reactor design is ingenious, bottom is sludge reaction district, top is settling region, top is three-phase separation area, effectively achieve the separation of gas-liquid-solid, guarantee hydraulic detention time is separated with mud mud age.(2) UASB is conducive to forming granule sludge, thus impels microorganism fully to contact with sewage, and microorganism utilization ratio is high, and processing power is strong.(3) separation of anaerobic zone, oxygen-starved area, aerobic zone, achieves different biophasic separation, is conducive to the metabolism of different population microorganism, thus can reach the object of denitrogenation dephosphorizing, and can stabilize and increase treatment effect.(4) anti-pollution impact load ability is strong, and sludge yield is low, can for a long time without the need to spoil disposal.(5) except adding necessary nutrition agent on a small quantity, without the need to other medicament, working cost is low.
The present invention can realize the effective process to fracturing outlet liquid, the water-quality COD content≤150mg/L after process, oleaginousness≤10mg/L, suspended solids content≤20mg/.The processing cost that the inventive method calculates ton water with pilot scale is 1.508 yuan/m
3; Calculate with industrialization scale-up, the processing cost of ton water is 0.706 yuan/m
3.The inventive method compared with prior art greatly reduces processing cost.
Accompanying drawing explanation
Fig. 1 is BESI technical finesse fracturing outlet liquid reaction unit schematic diagram; 1 be wastewater influent pump, 2 be wherein anaerobic reaction device in figure, 3 be amphimicrobian reaction unit, 4 be aerobic reaction unit, 5 be Ball-type packing, 6 be reflux pump, 7 for aerating apparatus.
Fig. 2 is Ball-type packing schematic diagram;
Fig. 3 is former water and water outlet COD content balance figure before and after the inventive method process;
Fig. 4 is former water and water outlet oleaginousness comparison diagram before and after the inventive method process;
Fig. 5 is former water and go out water suspension content comparison diagram before and after the inventive method process.
Embodiment
Embodiment one: a kind of fracturing outlet liquid bioremediation based on BESI technology comprises the following steps:
Step one: fracturing outlet liquid enters anaerobic reaction device (2) through wastewater influent pump (1) through the bottom water-in of anaerobic reaction device (2) and processes, and HRT is 20 ~ 28 hours, and described HRT is the water conservancy residence time;
Step 2: the fracturing outlet liquid after step one processes flows out through anaerobic reaction device (2) top sidewall water outlet, enter amphimicrobian reaction unit (3) by the bottom water-in of amphimicrobian reaction unit (3), HRT is 20 ~ 28 hours;
Step 3: the fracturing outlet liquid after step 2 process flows out through the top sidewall water outlet of amphimicrobian reaction unit (3), enter aerobic reaction device (4) by the bottom water-in of aerobic reaction device (4), HRT is 44 ~ 52 hours;
Step 4: the fracturing outlet liquid after step 3 process is divided into two portions, a part directly flows out through delivery pipe, and a part is back in amphimicrobian reaction unit (3) through reflux pump (6) in addition, and two-part volume ratio is 1:1.
The inventive method adopts the fracturing outlet liquid biological treatment device based on BESI technology to process.
The present invention in order to the process effectively solving fracturing outlet liquid up to standard, meet the problem of produced-water reinjection and outer row.Propose BESI biotechnology, the mode that BESI technology adopts " anaerobism+amphimicrobian+aerobic " to connect, comprise " water → anaerobic reaction device → amphimicrobian reaction unit → aerobic reaction device → water outlet ", mainly through denitrification and the nitrification of the sulfate reduction of anaerobic process, amphimicrobian and aerobic processes, hard-degraded substance in degraded fracturing outlet liquid, removes most of crude oil and suspended solids in sewage simultaneously.The core of BESI technology be propose a kind of newly take sulfate radical as the sewage water treatment method of electron acceptor(EA), this technology can according to the hydraulic detention time of sewage and water quality characteristic, multistage anaerobic and multistage amphimicrobian and multi-stage aerobic can ensure the effect of sewage disposal.
BESI technology is a kind of based on sulphur cycle, the electron transmission that sulfo-is thanked, the biologic treating technique that pollutent organic carbon source and nitrogenous source gradient utilize, main technology type comprises: anaerobe step of reaction (can be Multi-level anaerobe process), UASB can be adopted, IC, RB, the reactors such as GSB, facultative anaerobe step of reaction (can be multistage facultative anaerobe process), UASB can be adopted, IC, RB, the reactors such as GSB, gradient aerobic reaction stage (aerobic biofilter, the aerobic reactors such as aerobic floating stuffing biological reactor),
Embodiment two: present embodiment and embodiment one unlike: described anaerobic reaction device (2) is specially:
Anaerobic reaction device (2) adopts UASB, ABR, IC or SBR anaerobic reactor, the filler added in anaerobic reaction device (2) is floating stuffing, and the volume adding floating stuffing is 30 ~ 50% of anaerobic reaction device (2) volume; The acclimation conditions of described floating stuffing: the mud of inoculation is the mud of Daqing oil field east wind sewage work anaerobic biological treatment section, the inoculum size of mud is 18 ~ 20% of anaerobic reaction device (2) volume, and acclimation period is 12 ~ 18d;
Described floating stuffing is black polyurethane filler, and size is 4 × 4 × 4cm.
Embodiment three: one of present embodiment and embodiment one to two unlike: described amphimicrobian reaction unit (3) is specially:
Amphimicrobian reaction unit (3) adopts UASB, ABR, IC or SBR anaerobic reactor, and the oxygen in amphimicrobian reaction unit (2) obtains by refluxing from aerobic reaction device; The filler added in amphimicrobian reaction unit (3) is elastic filler, and the volume adding elastic filler is 30 ~ 40% of amphimicrobian reaction unit (3) volume; The acclimation conditions of described elastic filler: the mud of inoculation is the mud of Daqing oil field east wind sewage work anaerobic biological treatment section, the inoculum size of mud is 18 ~ 20% of anaerobic reaction device (2) volume; Acclimation period is 12 ~ 18d;
The material of described elastic filler is PVC, and diameter is 10 centimetres, and elastic filler is what buy.
Embodiment four: one of present embodiment and embodiment one to three unlike: described aerobic reaction device (4) is specially:
Aerobic reaction device (4) adopts aerobic reactor, the filler added in aerobic reaction device (4) is Ball-type packing (5), and the volume adding Ball-type packing (5) is 70 ~ 80% of aerobic reaction unit (4) volume; The acclimation conditions of Ball-type packing (5): the mud of inoculation is the mud of Daqing oil field east wind sewage work Aerobic biological process section, the inoculum size of mud is 8 ~ 10% of anaerobic reaction device (2) volume; The aeration rate of aerobic reaction device (4) is 16:1;
Described Ball-type packing (5) is made up of Ball-type packing shell and inside stuffing two portions, wherein Ball-type packing shell (as shown in Figure 2) diameter 10cm, inside stuffing is black polyurethane filler, the size of black polyurethane filler is 2 × 2 × 2cm, and each Ball-type packing shell inside fills 27 black polyurethane fillers.Ball-type packing shell and black polyurethane filler are what buy, and black polyurethane filler has certain elasticity, can compress.
Embodiment five: one of present embodiment and embodiment one to four unlike: the domestication medicament of described mud is specially:
Solvent 1L; 0.5 gram, urea; White sugar 2 grams; 0.2 gram, ferrous sulfate; Potassium primary phosphate 0.1 gram; SODIUMNITRATE 0.1 gram; 0.1 gram, magnesium sulfate; Sodium.alpha.-hydroxypropionate 2 milliliters; 2 grams, sodium sulfate; 0.01 gram, calcium chloride;
Wherein said solvent is water.
Embodiment six: one of present embodiment and embodiment one to five unlike: described anaerobic reaction device (2) is 1 grade or multistage, amphimicrobian reaction unit (3) is 1 grade or multistage, aerobic reaction device is 1 grade or multistage, described multistage be 2 grades or 3 grades.
Embodiment seven: one of present embodiment and embodiment one to four unlike: as shown in Figure 1, the device that the described fracturing outlet liquid bioremediation based on BESI technology adopts comprises:
Wastewater influent pump (1), anaerobic reaction device (2), amphimicrobian reaction unit (3), aerobic reaction device (4), Ball-type packing (5), reflux pump (6) and aerating apparatus (7);
Wastewater influent pump (1) is connected with the bottom water-in of anaerobic reaction device (2), the top sidewall water outlet of anaerobic reaction device (2) is connected with the bottom water-in of amphimicrobian reaction unit (3), the top sidewall water outlet of amphimicrobian reaction unit (3) is connected with the bottom water-in of aerobic reaction device (4), it is inner that Ball-type packing (5) is arranged on aerobic reaction device (4), aerobic reaction device (4) connects delivery pipe, be connected with the bottom sidewall water-in of amphimicrobian reaction unit (3) simultaneously, aerating apparatus (7) is connected with the bottom water-in of aerobic reaction device (4).
Sludge outlet is positioned at the bottom of aerobic reaction device (4), and mud is discharged through sludge outlet.
Embodiment one:
This example provides a kind of fracturing outlet liquid biological treatment device based on BESI biotechnology and method, and concrete steps are as follows:
Step one: fracturing outlet liquid enters anaerobic reaction device through wastewater influent pump and processes, water treatment capacity is 0.75L/h (bench scale), and HRT is 24 hours; Anaerobic reaction device adopts UASB, and the volume of filling floating stuffing is 40%.
Step 2: the fracturing outlet liquid after step one processes enters amphimicrobian reaction unit, and HRT is 24 hours; Amphimicrobian reaction unit adopts UASB;
Step 3: the fracturing outlet liquid after step 2 process enters aerobic reaction device, HRT is 48 hours;
Step 4: the fracturing outlet liquid after step 3 process is divided into two portions, a part directly flows out through delivery pipe, a part is back in amphimicrobian reaction unit through reflux pump in addition, reflux ratio is 50%, experimental result as shown in Figures 3 to 5, water-quality COD content≤150mg/L after process, oleaginousness≤10mg/L, suspended solids content≤20mg/L.Adopt the inventive method process fracturing outlet liquid, COD content, oil-contg and suspension content all reach national integrated wastewater discharge primary standard.
With field pilot test experimental scale, fracturing outlet liquid test in place is example, treatment scale 1m
3/ h.Ton cost of water treatment mainly comprises the electricity charge and nutrition agent adds expense.
Every day, total power consumption was: 54.4 degree of electricity × 0.63 yuan/degree electricity=34.272 yuan.
Ton water electric cost: 34.272 yuan/24m
3/ d=1.428 unit/m
3.
Ton cost of water treatment=1.428 yuan/m
3(electricity charge)+0.08 yuan/m
3(nutrition agent expense)=1.508 yuan/m
3.Calculate with the treatment scale of 2000 cubic metres every day:
Every day, total power consumption was: 19880 degree of electricity × 0.63 yuan/degree electricity=12524.4 yuan.
Ton water electric cost: 12524.4 yuan/20000m3/d=0.626 unit/m
3.
Ton cost of water treatment=0.626 yuan/m
3(electricity charge)+0.08 yuan/m
3(nutrition agent expense)=0.706 yuan/m
3.
Claims (7)
1., based on a fracturing outlet liquid bioremediation for BESI technology, described method adopts the fracturing outlet liquid biological treatment device based on BESI technology to process, and it is characterized in that, the method detailed process of described biological treatment is:
Step one: fracturing outlet liquid enters anaerobic reaction device (2) through wastewater influent pump (1) through the bottom water-in of anaerobic reaction device (2) and processes, and HRT is 20 ~ 28 hours, and described HRT is the water conservancy residence time;
Step 2: the fracturing outlet liquid after step one processes flows out through anaerobic reaction device (2) top sidewall water outlet, enter amphimicrobian reaction unit (3) by the bottom water-in of amphimicrobian reaction unit (3), HRT is 20 ~ 28 hours;
Step 3: the fracturing outlet liquid after step 2 process flows out through the top sidewall water outlet of amphimicrobian reaction unit (3), enter aerobic reaction device (4) by the bottom water-in of aerobic reaction device (4), HRT is 44 ~ 52 hours;
Step 4: the fracturing outlet liquid after step 3 process is divided into two portions, a part directly flows out through delivery pipe, and a part is back in amphimicrobian reaction unit (3) through reflux pump (6) in addition, and two-part volume ratio is 1:1.
2., according to a kind of fracturing outlet liquid bioremediation based on BESI technology that claim 1 is stated, it is characterized in that in described step one, anaerobic reaction device (2) is specially:
Anaerobic reaction device (2) adopts UASB, ABR, IC or SBR anaerobic reactor, the filler added in anaerobic reaction device (2) is floating stuffing, and the volume adding floating stuffing is 30 ~ 50% of anaerobic reaction device (2) volume; The acclimation conditions of described floating stuffing: the mud of inoculation is the mud of Daqing oil field east wind sewage work anaerobic biological treatment section, the inoculum size of mud is 18 ~ 20% of anaerobic reaction device (2) volume, and acclimation period is 12 ~ 18d;
Described floating stuffing is black polyurethane filler, and size is 4 × 4 × 4cm.
3., according to a kind of fracturing outlet liquid bioremediation based on BESI technology that claim 2 is stated, it is characterized in that in described step 2, amphimicrobian reaction unit (3) is specially:
Amphimicrobian reaction unit (3) adopts UASB, ABR, IC or SBR anaerobic reactor, and the oxygen in amphimicrobian reaction unit (2) obtains by refluxing from aerobic reaction device; The filler added in amphimicrobian reaction unit (3) is elastic filler, and the volume adding elastic filler is 30 ~ 40% of amphimicrobian reaction unit (3) volume; The acclimation conditions of described elastic filler: the mud of inoculation is the mud of Daqing oil field east wind sewage work anaerobic biological treatment section, the inoculum size of mud is 18 ~ 20% of anaerobic reaction device (2) volume; Acclimation period is 12 ~ 18d;
The material of described elastic filler is PVC.
4., according to a kind of fracturing outlet liquid bioremediation based on BESI technology that claim 3 is stated, it is characterized in that in described step 3, aerobic reaction device (4) is specially:
Aerobic reaction device (4) adopts aerobic reactor, the filler added in aerobic reaction device (4) is Ball-type packing (5), and the volume adding Ball-type packing (5) is 70 ~ 80% of aerobic reaction unit (4) volume; The acclimation conditions of Ball-type packing (5): the mud of inoculation is the mud of Daqing oil field east wind sewage work Aerobic biological process section, the inoculum size of mud is 8 ~ 10% of anaerobic reaction device (2) volume; The aeration rate of aerobic reaction device (4) is 16:1;
Described Ball-type packing (5) is made up of Ball-type packing shell and inside stuffing two portions, wherein Ball-type packing shell diameter 10cm, inside stuffing is black polyurethane filler, the size of black polyurethane filler is 2 × 2 × 2cm, and each Ball-type packing shell inside fills 27 black polyurethane fillers.
5., according to a kind of fracturing outlet liquid bioremediation based on BESI technology that claim 4 is stated, it is characterized in that the domestication medicament of described mud is specially:
Solvent 1L; 0.5 gram, urea; White sugar 2 grams; 0.2 gram, ferrous sulfate; Potassium primary phosphate 0.1 gram; SODIUMNITRATE 0.1 gram; 0.1 gram, magnesium sulfate; Sodium.alpha.-hydroxypropionate 2 milliliters; 2 grams, sodium sulfate; 0.01 gram, calcium chloride;
Wherein said solvent is water.
6. a kind of fracturing outlet liquid bioremediation based on BESI technology according to claim 5, it is characterized in that described anaerobic reaction device (2) is 1 grade or multistage, amphimicrobian reaction unit (3) is 1 grade or multistage, aerobic reaction device is 1 grade or multistage, described multistage be 2 grades or 3 grades.
7. a kind of fracturing outlet liquid bioremediation based on BESI technology according to claim 6, is characterized in that, the described fracturing outlet liquid biological treatment device based on BESI technology comprises:
Wastewater influent pump (1), anaerobic reaction device (2), amphimicrobian reaction unit (3), aerobic reaction device (4), Ball-type packing (5), reflux pump (6) and aerating apparatus (7);
Wastewater influent pump (1) is connected with the bottom water-in of anaerobic reaction device (2), the top sidewall water outlet of anaerobic reaction device (2) is connected with the bottom water-in of amphimicrobian reaction unit (3), the top sidewall water outlet of amphimicrobian reaction unit (3) is connected with the bottom water-in of aerobic reaction device (4), it is inner that Ball-type packing (5) is arranged on aerobic reaction device (4), aerobic reaction device (4) connects delivery pipe, be connected with the bottom sidewall water-in of amphimicrobian reaction unit (3) simultaneously, aerating apparatus (7) is connected with the bottom water-in of aerobic reaction device (4).
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| CN108928916A (en) * | 2018-08-10 | 2018-12-04 | 苏州湛清环保科技有限公司 | The reactor of denitrification granular sludge |
| CN111847757A (en) * | 2019-04-29 | 2020-10-30 | 中国石油天然气股份有限公司 | Treatment method of fracturing flow-back fluid |
| CN112744910A (en) * | 2020-12-30 | 2021-05-04 | 重庆大学 | Method for efficiently reducing organic matters in flowback water at low cost by using shale gas flowback water bottom mud microorganisms |
| CN113582463A (en) * | 2021-08-16 | 2021-11-02 | 三桶油环保科技(宜兴)有限公司 | Direct-discharge treatment method for high-salinity fracturing flowback fluid |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108928916A (en) * | 2018-08-10 | 2018-12-04 | 苏州湛清环保科技有限公司 | The reactor of denitrification granular sludge |
| CN111847757A (en) * | 2019-04-29 | 2020-10-30 | 中国石油天然气股份有限公司 | Treatment method of fracturing flow-back fluid |
| CN111847757B (en) * | 2019-04-29 | 2022-05-06 | 中国石油天然气股份有限公司 | Treatment method of fracturing flow-back fluid |
| CN112744910A (en) * | 2020-12-30 | 2021-05-04 | 重庆大学 | Method for efficiently reducing organic matters in flowback water at low cost by using shale gas flowback water bottom mud microorganisms |
| CN113582463A (en) * | 2021-08-16 | 2021-11-02 | 三桶油环保科技(宜兴)有限公司 | Direct-discharge treatment method for high-salinity fracturing flowback fluid |
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