CN101113040A - Novel processing method for oil field drilling waste water - Google Patents
Novel processing method for oil field drilling waste water Download PDFInfo
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- CN101113040A CN101113040A CNA2006100294462A CN200610029446A CN101113040A CN 101113040 A CN101113040 A CN 101113040A CN A2006100294462 A CNA2006100294462 A CN A2006100294462A CN 200610029446 A CN200610029446 A CN 200610029446A CN 101113040 A CN101113040 A CN 101113040A
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- waste water
- drilling waste
- drilling
- oil field
- processing method
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 239000002351 wastewater Substances 0.000 title claims abstract description 41
- 238000003672 processing method Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000005345 coagulation Methods 0.000 claims abstract description 11
- 230000015271 coagulation Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000008394 flocculating agent Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000000701 coagulant Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005189 flocculation Methods 0.000 claims description 4
- 230000016615 flocculation Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- -1 ferrum aluminum series Chemical class 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 10
- 239000002699 waste material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000001112 coagulating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a wastewater purification treatment technique field. The novel wastewater treatment method for oil field drilling of the invention is that: first coagulation pretreatment to drilling wastewater is carried out, and ferrum series and aluminum series inorganic flocculating agents or ferrum aluminum series complex flocculating agent or the combination of the flocculating agents are adopted, then the solid and liquid is separated, and the treated liquid after coagulation pretreatment enters into chemical oxidation process and then is discharged, finally qualified treated wastewater is acquired.
Description
Technical field
The present invention relates to a kind of wastewater treatment technique field.
Background technology
Owing to added a large amount of mud conditioners in the drilling mud, well-drilling waste water water quality is very complicated.It mainly is characterized by 1. COD woman concentration height, and is common in thousands of extremely scopes of tens thousand of mg/l, and major part is the organism of bio-refractory; 2. colourity is higher; 3. solid suspension content is more.
Usually store this part waste water, easy like this soil, the face of land and the groundwater pollution of causing in well-drilling waste water pond of situ of drilling well excavation.Therefore, after drilling operation is finished, must carry out harmless treatment to them.Background technology both at home and abroad having dropped into very big strength aspect the exploitation of well-drilling waste water treatment technology, has also formed some otherwise effective technique at present, and existing exploitation both at home and abroad in recent years and some treatment technologies that use are summarized as follows.
1. inject the safe formation method.This method is that well-drilling waste water is injected the stratum by deep-well.It is suitable to select, and fracture gradient is lower, impervious safe formation on every side.Because this method brings pollution might for underground water or oil reservoir, this method is restricted in the U.S..There is strict demand in Canada to formation condition when using this law, require the processing layer bit depth must be greater than 600 meters.This method is suitable for oil base and water-base drilling fluid is handled.
Since present method require with waste water reinjection before the stratum, must carry out safety evaluation to selected stratum, behind the capacity on the porosity of analyzing definite stratum and rate of permeation and selected stratum, just can carry out re-injection, and have only the high pressure plunger pump of employing waste water could be squeezed into the stratum, thereby cause processing cost higher relatively, generally be about 15 yuan/ton.
2. backfill method.It is a kind of method less and that generally adopt of spending that backfill stores discarded slurry.Before the backfill operation, at first should be settlement separate with storing the interior refuse in hole, treat the clarification of water on upper strata, add some coagulating agent in case of necessity.After reaching regulation water quality, discharging on the spot.Remaining mud treat its can be in storing the hole after being dried to a certain degree landfill on the spot, general top will keep the topsoil of 1～1.5 meter thickness, notes making returning to the original profile in this district and making topsoil smooth around storing the hole.This law is mainly used in the wastewater treatment that water-base drilling fluid produces, and is suitable for arid area drilling wastewater treatment short of rain.
3. solidification method.This genealogy of law adds solidifying agent in water-base drilling fluid or drilling fluid settling, make it to transform the solid as soil, and landfill is in the original place or as material of construction.This method can be eliminated the erosion to soil of metal ion in the waste drilling fluid and organism largely, thereby reduce influence and the harm of waste drilling fluid to environment, the storage hole that can guarantee waste drilling fluid is simultaneously again finished and can be restoreed abandoned land to cultivation at drilling process one, needn't wait as long for solidifying of waste drilling fluid component.This is to use a more method in Russia at present.
4. recycle method.The method that waste drilling fluid is taked to recycle can reduce the environmental pollution degree, and obtains high economic benefit.Developed following several reuse method at present: the useful composition and the recirculation that utilize dewatering unit dehydration and recovery drilling fluid, spray-drying process to reclaim in the waste liquid of drilling are used.But there is not practical application.
5. the physical chemistry combination technique is handled well-drilling waste water.The present domestic main treatment technology of having developed based on coagulation process.The well-drilling waste water that this technology can make oil base and water-based mud system effluent quality after treatment reaches national composite wastewater discharging secondary standard (CODcr value is 150rag/l), and its processing cost is in 2～3 yuan of/ton scopes.But there are shortcomings such as coagulation effect is undesirable, water outlet SS is higher, be not suitable for handling high turbid high COD well-drilling waste water, equipment is perishable in this equipment.
Summary of the invention
Therefore purpose of the present invention is exactly the problem that exists at existing treatment technology, and the treatment process of the oil-field well-drilling waste water of a kind of economy and practicality is provided, to solve the processing difficult problem of China's oil industry well-drilling waste water.
Find that under study for action iron system, aluminium based flocculating agent all can effectively be removed the polymer organic pollutant, both mix use, can further reduce organic content in the processed water; Various oxidation technologies such as Fenton oxidation, oxidation etc. all can reduce the COD content of waste water effectively, and improve the biodegradability of waste water; The well-drilling waste water that biological treatment uses technology of biological membrane or membrane Bio-reactor Technology to produce for intermittent type is handled to have that treatment effect is stable, convenient management, realizes the characteristics of automatization easily.
To achieve these goals, main technical schemes of the present invention is as follows:
A kind of new processing method for oil field drilling waste water, this method is: at first with well-drilling waste water process coagulation pretreatment, coagulating agent is that inorganic flocculating agent or iron aluminium are the combination of composite flocculation agent or these flocculation agents with iron system, aluminium; Solid-liquid separation then; Processed liquid after the coagulation pretreatment enters chemical oxidation of gold, discharges then.
The input of coagulating agent is at pH value 4～7, added amount of chemical 50～350mg/l (in iron or aluminium content).In order to improve the form of coagulation flco, improve follow-up solid-liquid separation efficiency, can suitably use organic polymer coargulator such as polyacrylamide etc. as coagulant aids.Solid-liquid separation can adopt various tradition or non-traditional mode, as gravitational settling, air supporting, filtration, centrifugal, membrane sepn etc.
Many chemical oxidation technology all can be used, and the chemical oxidation technology mainly is to determine according to on-the-spot working conditions, equipment making cost and particular case.
Beneficial effect of the present invention: adopt method and apparatus of the present invention, can be under lower processing cost, the well-drilling waste water water quality that various drilling mud systems are produced reaches national emission request, can solve China's oilfield drilling waste water handling problem.
Embodiment
Further describe the present invention by the following examples.
At first adopting poly-aluminium that well-drilling waste water is carried out coagulation pretreatment, is that different coagulating treatment effects of gathering aluminum concentrations are shown in Table 1 under 4.7 the condition in pH value.Coagulating treatment has effect preferably to removal organic in the well-drilling waste water, can reach 90.9% to the clearance of TOC, is about 168.5mg/l through the remaining TOC value of the 7/8th page in well-drilling waste water specification sheets after the coagulation pretreatment.Well-drilling waste water after the coagulating treatment adopts ozone oxidation to carry out oxide treatment, the results are shown in Table shown in 2.From the result of table 2 as can be seen, behind the oxidation 30min, the clearance of TOC in the waste water is about 54.9%, waste water BOD value 10mg/l before the oxidation has been increased to 60mg/l, and the value of BOO/TOc has risen to 0.79 from 0.06.Clearly, ozone oxidation can not only be removed the organism in the waste water, and can significantly improve organic biodegradability in the waste water.Well-drilling waste water after different oxidization times are handled is as shown in table 3 through the aerobe result, prolongation along with oxidization time, through subsequent biological treatment the organic clearance of residue in the waste water is increased gradually, waste water behind the ozone oxidation 10min adopts biological treatment, can make the TOC value of waste water reduce to 51mg/l, can reach the standard of effluxing.
In sum, technology such as the integrated coagulating treatment of the present invention, advanced oxidation and biological treatment and device solve the petroleum industry well-drilling waste water and handle problems, and can make it to reach national sewage comprehensive emission standard.
Claims (3)
1. new processing method for oil field drilling waste water, this method is: at first with well-drilling waste water through coagulation pretreatment, coagulating agent is that inorganic flocculating agent or iron aluminium are the combination of composite flocculation agent or these flocculation agents with iron system, aluminium; Solid-liquid separation then; Processed liquid after the coagulation pretreatment enters chemical oxidation of gold, discharges then.
2. new processing method for oil field drilling waste water as claimed in claim 1 is characterized in that: the input of coagulating agent is in pH value 4～7, added amount of chemical 50～350mg/l (in iron or aluminium content).
3. new processing method for oil field drilling waste water as claimed in claim 1 is characterized in that: solid-liquid separation adopts the mode of gravitational settling, air supporting, filtration, centrifugal or membrane sepn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100294462A CN101113040A (en) | 2006-07-27 | 2006-07-27 | Novel processing method for oil field drilling waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100294462A CN101113040A (en) | 2006-07-27 | 2006-07-27 | Novel processing method for oil field drilling waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101113040A true CN101113040A (en) | 2008-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100294462A Pending CN101113040A (en) | 2006-07-27 | 2006-07-27 | Novel processing method for oil field drilling waste water |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935122A (en) * | 2010-09-03 | 2011-01-05 | 天津理工大学 | Purification and treatment method of drilling wastewater in oil and gas fields |
| CN102086071A (en) * | 2010-12-20 | 2011-06-08 | 中国石油大学(北京) | New reinjection treatment method of polysulfonate drilling wastewater |
| CN102139971A (en) * | 2011-01-26 | 2011-08-03 | 中国石油大学(华东) | Method and process for advanced treatment of well drilling effluent |
| CN102260024A (en) * | 2011-06-23 | 2011-11-30 | 环境保护部华南环境科学研究所 | Method for treating phenanthrene-containing wastewater by ozone-membrane biological reactor (MBR) combined process |
| CN102295359A (en) * | 2010-06-25 | 2011-12-28 | 中国石油化工集团公司 | Treatment method for deep-well polysulfide slurry drilling waste water |
| CN102520133A (en) * | 2011-12-30 | 2012-06-27 | 北京矿冶研究总院 | Resource evaluation method and analysis processing system for fracturing flowback fluid |
| CN102865047A (en) * | 2012-10-10 | 2013-01-09 | 杨德敏 | Bioremediation method for abandoned drilling fluids of oil and gas fields and shale gas fields |
| CN104016430A (en) * | 2014-06-19 | 2014-09-03 | 郑州大学 | Shale gas exploitation wastewater treatment process |
| CN106277308A (en) * | 2016-08-31 | 2017-01-04 | 重庆融极环保工程有限公司 | A kind of well-drilling waste water anaerobic treatment method |
| CN106939589A (en) * | 2017-05-05 | 2017-07-11 | 暨南大学 | Water hyacinth is salvaged and handling process |
| CN110374529A (en) * | 2019-06-25 | 2019-10-25 | 四川广阳环保科技有限公司 | A kind of recovery and treatment method of well drilling detritus and products thereof and application |
-
2006
- 2006-07-27 CN CNA2006100294462A patent/CN101113040A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295359B (en) * | 2010-06-25 | 2013-09-11 | 中国石油化工集团公司 | Treatment method for deep-well polysulfide slurry drilling waste water |
| CN102295359A (en) * | 2010-06-25 | 2011-12-28 | 中国石油化工集团公司 | Treatment method for deep-well polysulfide slurry drilling waste water |
| CN101935122B (en) * | 2010-09-03 | 2012-05-16 | 天津理工大学 | Oil-gas field drilling wastewater purification treatment method |
| CN101935122A (en) * | 2010-09-03 | 2011-01-05 | 天津理工大学 | Purification and treatment method of drilling wastewater in oil and gas fields |
| CN102086071A (en) * | 2010-12-20 | 2011-06-08 | 中国石油大学(北京) | New reinjection treatment method of polysulfonate drilling wastewater |
| CN102086071B (en) * | 2010-12-20 | 2012-10-31 | 中国石油大学(北京) | A method for reinjection treatment of polysulfide drilling wastewater |
| CN102139971A (en) * | 2011-01-26 | 2011-08-03 | 中国石油大学(华东) | Method and process for advanced treatment of well drilling effluent |
| CN102260024A (en) * | 2011-06-23 | 2011-11-30 | 环境保护部华南环境科学研究所 | Method for treating phenanthrene-containing wastewater by ozone-membrane biological reactor (MBR) combined process |
| CN102520133A (en) * | 2011-12-30 | 2012-06-27 | 北京矿冶研究总院 | Resource evaluation method and analysis processing system for fracturing flowback fluid |
| CN102865047A (en) * | 2012-10-10 | 2013-01-09 | 杨德敏 | Bioremediation method for abandoned drilling fluids of oil and gas fields and shale gas fields |
| CN102865047B (en) * | 2012-10-10 | 2015-04-29 | 重庆地质矿产研究院 | A bioremediation method for waste drilling mud in oil and gas fields and shale gas fields |
| CN104016430A (en) * | 2014-06-19 | 2014-09-03 | 郑州大学 | Shale gas exploitation wastewater treatment process |
| CN106277308A (en) * | 2016-08-31 | 2017-01-04 | 重庆融极环保工程有限公司 | A kind of well-drilling waste water anaerobic treatment method |
| CN106277308B (en) * | 2016-08-31 | 2019-10-11 | 重庆融极环保工程有限公司 | A kind of well-drilling waste water anaerobic treatment method |
| CN106939589A (en) * | 2017-05-05 | 2017-07-11 | 暨南大学 | Water hyacinth is salvaged and handling process |
| CN110374529A (en) * | 2019-06-25 | 2019-10-25 | 四川广阳环保科技有限公司 | A kind of recovery and treatment method of well drilling detritus and products thereof and application |
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Application publication date: 20080130 |