CN101186421A - Method for treating oil-containing sludge - Google Patents
Method for treating oil-containing sludge Download PDFInfo
- Publication number
- CN101186421A CN101186421A CNA2007103013605A CN200710301360A CN101186421A CN 101186421 A CN101186421 A CN 101186421A CN A2007103013605 A CNA2007103013605 A CN A2007103013605A CN 200710301360 A CN200710301360 A CN 200710301360A CN 101186421 A CN101186421 A CN 101186421A
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- gas
- containing silt
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
A treatment method for oil-containing silt is provided, which is characterized in that: gas containing ozone is dissolved in water through a gas floatation pump; the dissolved gas water is fully mixed with the oil-containing silt to be cleaned and ozonation cleaning is carried out at the same time during the course of gas flotation. After the dissolved gas water is mixed with the medium to be cleaned, ozone gas spills over in the form of micro-bubbles and the micro-bubbles attach to the suspending medium in the water, fully contact the medium and react, thus realizing the effect of cleaning oil-containing silt. The treatment method for oil-containing silt organically combines ozonation cleaning and gas flotation, exerts the synergistic effect of the two to the treatment of oil-containing silt, therefore, the method can effectively shorten the treatment time of oil-containing silt, improves purification treatment effect and helps the treated medium be discharged harmlessly.
Description
Technical field:
The present invention relates to a kind of purifying treatment method in the environmental technology field of oil field to oil-containing mud sand.
Background technology:
Oil-containing mud sand is meant greasy filth, the oil-sand that produces in petroleum exploration and development, be mainly derived from Oil extraction, defeated each link that reaches in the treating processes of collection, usually exist with a kind of heterogeneous stable colloidal suspension systems such as silt particle, crude oil, various chemical processing agent, sewage that contain, physical aspect is solid-state or semi liquid state, and outward appearance is the thick material of brownish black.Oil in the oil-containing mud sand generally exists with several forms such as free state, emulsification attitude, solubilised state, and the oil that wherein emulsification attitude exists accounts for the overwhelming majority, is the major cause that oil-containing mud sand is difficult to adopt conventional centrifuge dehydration method processing.The existence of oily sludge is producing bad influence to environmental quality on every side, is bigger difficult problem in the present solid waste disposal.
Oil-containing mud sand mainly contains following two sources: the first kind follows Oil extraction and the defeated process of collection produces, and is mainly derived from profit storage tank that joint station, sewage plant, transhipment station etc. locate, container, pond for recovering bed mud etc.This part oil-containing mud sand has added various chemical agents in processes such as Oil extraction, oil-gas gathering and transportation, sewage disposal, make that the bridge crosslinking structure between crude oil in the oil sludge and sand, each pollutant and the silt is firm, and its composition, structure are very complicated.Second class is a problem of secondary pollution, be mainly derived from borehole operation, drilling well and industrial accident etc. and discharge generation of crude oil pollution soil and depleted sewage disposal filtrate etc., this part crude oil and silt belong to surface bonding in conjunction with not tight, and part reality still is in emulsified state.
At present, the oil-containing mud sand treatment process has several methods such as concentrated stacking method, landfill method, burning method, solidification method, re-injection method, biological treatment, extraction process, WATER-WASHING METHOD, heat treating process usually both at home and abroad, but, cause yet there are no sophisticated treatment process and occur because aforesaid method respectively has its limitation that can not break through.At this kind situation, require the technician in the environmental protection field, oil field can find a kind of method that can effectively handle oil-containing mud sand as early as possible, can reclaim crude resources wherein to greatest extent and make it innoxious.
Summary of the invention:
In order to solve the existing problem that oil-containing silt treatment method is all caused effectively handling oil-containing mud sand because respectively limitation is arranged that exists in the prior art, the invention provides a kind of new oil-containing silt treatment method, this kind oil-containing silt treatment method is cleaned ozone oxidation with gas flotation and is organically combined, the synergistic effect of bringing into play the two is applied to the processing of oil-containing mud sand, this method can effectively shorten the treatment time of oil-containing mud sand and improve its purifying treatment effect, makes medium after the processing reach the purpose of innoxious discharging.
Technical scheme of the present invention is: this kind oil-containing silt treatment method, it can be summarized as following content, promptly will contain ozone gas and dissolve in the water, and, carry out ozone oxidation simultaneously in the process of gas flotation and clean then with this dissolved air water and oily sludge thorough mixing to be cleaned by Airfloat pump.When specific implementation, change the inlet end of Airfloat pump in the air-floating apparatus into air that feeding contains ozone gas, make the air dispersing and dissolving under Airfloat pump pressure and high speed shear effect that contains ozone gas in water, inject the container bottom that fills the oil-containing mud sand suspension liquid that mixes with hot water by distribution apparatus again.
The present invention has following beneficial effect: owing to take such scheme, be dispersed with the dissolved air water and the oil-containing mud sand suspension liquid thorough mixing of ozone gas, be scattered in gas in the water because pressure descends back and overflowing with the micro-bubble form, this part micro-bubble is in the process that the container bottom of oil-containing mud sand suspension liquid rises on the top, ozone wherein can fully contact with the oil-containing mud sand suspension liquid, pollution substance generation chemical reaction with various forms existence in the oil-containing mud sand suspension liquid, the organic substance of multiple complexity in the water is transformed into simple organic matter, make macromolecule organic matter be degraded to lower-molecular substance, thereby the sump oil that is bonded on the silt particle is separated with silt particle, reach the purpose that shortens the oil-containing mud sand treatment time and improve the purifying treatment effect, make the medium after the processing reach innoxious discharging.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention.
1-cleanser among the figure, 2-solid-liquid separator, 3-triphase separator, 4-oil outlet pipe, 5-hot water process furnace, the 6-ozonizer, 7-Airfloat pump, 8-sparger, 9-dissolved air water transfer lime, the 10-sump pump, 11-Airfloat pump water inlet pipe, 12-Airfloat pump inlet pipe, 13-effluent cycle pipe.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
This kind oil-containing silt treatment method mainly is will contain ozone gas by Airfloat pump to dissolve in the water, with this dissolved air water and oil-containing mud sand thorough mixing to be cleaned, carries out ozone oxidation simultaneously and clean in the process of gas flotation.By shown in Figure 1, this kind method has mainly been used following equipment when using: cleanser 1, solid-liquid separator 2, triphase separator 3, hot water process furnace 5, ozonizer 6, Airfloat pump 7 and sparger 8, position between each equipment and connecting relation are as shown in the figure.
Its working process is after using present method: by ozonizer 6 air is converted into and contains ozone gas, containing ozone gas together enters in the Airfloat pump 7 by Airfloat pump inlet pipe 12 and air supporting water, dispersing and dissolving is in water under the pressure of Airfloat pump 7 and high speed shear effect to contain ozone gas, and gassy water enters in cleanser 1, solid-liquid separator 2 and the triphase separator 3 uniformly by sparger 8.The clean-out system aqueous solution after containing the sump oil silt particle and heating enters in the cleanser 1; In cleanser 1, cleaning temperature is at 50～95 ℃, and oil-containing mud sand and water ratio were at 1: 5～1: 20, and the medicament add-on is 10～500ppm, and scavenging period is 10～60min.By high-speed stirring and ozone air-float effect, make oil, sand initial gross separation, the oil after the cleaning, sand, water mixture enter in the liquid-solid separator 2; In liquid-solid separator 2, stirring by agitator, the oily sludge suspension liquid with from the water thorough mixing that is dissolved with ozone gas of Airfloat pump 7, make oil, sand clean more thorough by ozone oxidation on the one hand, pass through gas flotation on the other hand, liquid-solid two-phase is separated, and solid phase (being mainly silt particle) is directly discharged from the bottom of solid-liquid separator 2; Liquid phase in the solid-liquid separator 2 enters in the triphase separator 3, by ozone air-float effect and natural subsidence, make oil, water, sand three phase separation more thorough, its oil is at the middle and upper levels directly discharged by oil outlet pipe 4, the sand facies of lower floor are directly discharged in the bottom, the middle level is cleaned back sewage major part and is entered hot water process furnace 5 heating backs by sump pump 10 and enter in the cleanser 1 and recycle (this partly circulating sewage be called major cycle water) by effluent cycle pipe 13, and small portion enters Airfloat pump by Airfloat pump water inlet pipe 11 and injects each tank body (this part is called auxilliary recirculated water) as air supporting with water cycle.Be the ratio of scavenging solution and oily sludge in the assurance continuous flow procedure, major cycle water internal circulating load hourly is 1.5 times～6 times of cleanser 1 useful volume, and auxilliary quantity of circulating water is 1/10～1/2 of the major cycle water yield.
Above data to be based on the oily sludge treatment capacity be 5t/h, process is to use under the condition handled of serialization.Restricted condition for ozone gas is: the ozone gas that ozonizer produces is under the effect of air-water mixing pump, dispersing and dissolving forms ozone water in water under 0.2～1.0Mpa pressure, the ozone concn that contains in the ozone gas is 1-6%, and the content of ozone in water is 5-50mg/l.
In addition, size for use equipment will be made some qualifications, can obtain best treatment effect like this, be that dissolved air water enters respectively in cleanser 1, solid-liquid separator 2, the triphase separator 3 by sparger, the caliber of dissolved air water transfer lime 9 is DN50～DN100, the sparger 8 that injects is apart from liquid level distance from top＞1500mm, thereby ozone gas can have with the sump oil silt particle and effectively guaranteed oxidation cleanup action and the air flotation effect of ozone to oily sludge sufficient duration of contact.
Present method is now by example detection, and after introducing the ozone air-float processing, the silt particle oleaginousness is by the 0.1%-3% that handles after preceding 18%-45% can drop to processing.
Claims (2)
1. an oil-containing silt treatment method is characterized in that: will contain ozone gas by Airfloat pump and dissolve in the water, and with this dissolved air water and oily sludge thorough mixing to be cleaned, carry out ozone oxidation simultaneously and clean in the process of gas flotation.
2. a kind of oil-containing silt treatment method according to claim 1, it is characterized in that: change the inlet end of Airfloat pump in the air-floating apparatus into air that feeding contains ozone gas, make the air dispersing and dissolving under Airfloat pump pressure and high speed shear effect that contains ozone gas in water, inject the container bottom that fills the oily sludge suspension liquid that mixes with hot water by distribution apparatus again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103013605A CN101186421A (en) | 2007-12-27 | 2007-12-27 | Method for treating oil-containing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103013605A CN101186421A (en) | 2007-12-27 | 2007-12-27 | Method for treating oil-containing sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101186421A true CN101186421A (en) | 2008-05-28 |
Family
ID=39479084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103013605A Pending CN101186421A (en) | 2007-12-27 | 2007-12-27 | Method for treating oil-containing sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101186421A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249506A (en) * | 2010-05-19 | 2011-11-23 | 中国石油化工股份有限公司 | Treatment method of PTA (purified terephthalic acid) chemical wastewater excess sludge |
| CN102303042A (en) * | 2011-05-31 | 2012-01-04 | 北京师范大学 | Circulation washing system device and method for polluted soil washing repair |
| CN103755098A (en) * | 2014-01-17 | 2014-04-30 | 常州大学 | Complex oily wastewater treatment method and device |
| CN106426645A (en) * | 2016-09-26 | 2017-02-22 | 常州大学 | Waste plastic flotation device |
| CN108483852A (en) * | 2018-04-17 | 2018-09-04 | 北京石油化工学院 | A kind of efficient combination method oily sludge cleaning system |
| CN110963601A (en) * | 2019-11-13 | 2020-04-07 | 赵世航 | Complex oily wastewater treatment device and wastewater treatment method and system thereof |
| CN111484192A (en) * | 2020-04-02 | 2020-08-04 | 江苏永冠给排水设备有限公司 | Mobile garbage transfer station leachate treatment device |
-
2007
- 2007-12-27 CN CNA2007103013605A patent/CN101186421A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249506A (en) * | 2010-05-19 | 2011-11-23 | 中国石油化工股份有限公司 | Treatment method of PTA (purified terephthalic acid) chemical wastewater excess sludge |
| CN102249506B (en) * | 2010-05-19 | 2013-02-06 | 中国石油化工股份有限公司 | Treatment method of PTA (purified terephthalic acid) chemical wastewater excess sludge |
| CN102303042A (en) * | 2011-05-31 | 2012-01-04 | 北京师范大学 | Circulation washing system device and method for polluted soil washing repair |
| CN103755098A (en) * | 2014-01-17 | 2014-04-30 | 常州大学 | Complex oily wastewater treatment method and device |
| CN103755098B (en) * | 2014-01-17 | 2015-01-07 | 常州大学 | Complex oily wastewater treatment method and device |
| CN106426645A (en) * | 2016-09-26 | 2017-02-22 | 常州大学 | Waste plastic flotation device |
| CN106426645B (en) * | 2016-09-26 | 2018-08-14 | 常州大学 | A kind of waste plastics flotation unit |
| CN108483852A (en) * | 2018-04-17 | 2018-09-04 | 北京石油化工学院 | A kind of efficient combination method oily sludge cleaning system |
| CN110963601A (en) * | 2019-11-13 | 2020-04-07 | 赵世航 | Complex oily wastewater treatment device and wastewater treatment method and system thereof |
| CN110963601B (en) * | 2019-11-13 | 2022-01-25 | 赵世航 | Complex oily wastewater treatment device and wastewater treatment method and system thereof |
| CN111484192A (en) * | 2020-04-02 | 2020-08-04 | 江苏永冠给排水设备有限公司 | Mobile garbage transfer station leachate treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100455527C (en) | Oil-removing treatment process of oil-containing sludge | |
| CN101186421A (en) | Method for treating oil-containing sludge | |
| CN104556523B (en) | A kind of Alkaline Residue In Oil Refineries waste liquid and three-level model method | |
| CN202785917U (en) | Oily sludge purifying treatment system | |
| CN102180575B (en) | Processing method for centralized treatment and reclamation of oil-containing sludge | |
| CN103739137B (en) | The harmless treatment recovery method of oilfield sump oil and device | |
| CN109574458A (en) | A kind of processing method and processing device of oily sludge | |
| CN108821528A (en) | A kind of micro-organism treatment process and processing system of Oilfield Oil-Contained Silt | |
| CN103449690A (en) | Purifying treatment method for oil-containing sludge | |
| CN1304309C (en) | Process of flowing multistage chemical thermo-dynamic for cleaning mud oil-containing | |
| CN108892353A (en) | Oil field mining liquid central treating station process for treating oil-containing sludge and device | |
| CN103206179B (en) | Skid-mounted oilfield drilling fluid does not land harmless treatment device | |
| CN108218042A (en) | Fracturing outlet liquid processing system and technique | |
| CN109365512A (en) | A kind of technique and device of mobile quickly elution oil-polluted soils | |
| CN110240373A (en) | A kind of cleaning agent and processing method handling polymer-containing oil sludge | |
| CN102849908B (en) | Ultrasonic treatment method and device of oil field sand-containing oil sludge | |
| CN215288453U (en) | Hot washing equipment for dirty oil sludge | |
| CN209555035U (en) | A kind of processing unit of oily sludge | |
| CN101585610A (en) | Water treatment method that a kind of medicament can be recycled and system thereof | |
| CN101362979B (en) | Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof | |
| CN108996862A (en) | A kind of water base oil removal treatment method and device of Sludge in Oilfields | |
| CN105967496B (en) | A kind of method for innocent treatment of sludge with high salt | |
| CN206083402U (en) | Belt cleaning device of stone oil pollution soil | |
| CN104556625B (en) | A kind of greasy filth emulsion splitter and oil soil treatment technique | |
| CN109020107A (en) | Greasy filth demulsification three phase separation agent and its preparation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |