CN102478564A - Method for measuring influence of additive amount of flotation agent on oil removal rate - Google Patents
Method for measuring influence of additive amount of flotation agent on oil removal rate Download PDFInfo
- Publication number
- CN102478564A CN102478564A CN2010105676879A CN201010567687A CN102478564A CN 102478564 A CN102478564 A CN 102478564A CN 2010105676879 A CN2010105676879 A CN 2010105676879A CN 201010567687 A CN201010567687 A CN 201010567687A CN 102478564 A CN102478564 A CN 102478564A
- Authority
- CN
- China
- Prior art keywords
- flotation agent
- removal rate
- oil removal
- oil
- influence
- 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
Landscapes
- Physical Water Treatments (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a method for measuring the influence of the additive amount of a flotation agent on an oil removal rate, comprising the following steps: preparing a flotation agent; collecting oily sewage and measuring the oil content; respectively adding same amount of the oily sewage in a plurality of experimental containers, and adjusting to a same pH value; respectively adding different amounts of the flotation agent in the oily sewage; respectively measuring the oil content of the oily sewage, and calculating the oil removal rate of different additive amounts of the flotation agent to the oily sewage to obtain the influence of the additive amount of the flotation agent on the oil removal rate. According to the method, the influence of the additive amount of the flotation agent on the oil removal rate can be rapidly measured, the measurement precision is high, the operation steps are simple, and the measurement cost is low. According to the measurement results, the additive amount of the flotation agent can be selected in a targeted manner, thus the flotation agent oil removal rate is increased, the energy is saved, and the sewage processing cost is saved.
Description
Technical field
The present invention relates to the method for testing of a kind of flotation agent addition to the oil removal rate influence.
Background technology
In many municipal effluents and industrial waste water, the petroleum industry oily waste water is the most representative.Oil-containing wastewater is mainly from land and offshore oil exploitation, processing, transportation (accident and draining), industrial water drainage.Oil pollutant forms oil film on the water surface, the isolated atmosphere and the water surface destroy the excess oxygen of water body, and the minimizing of oxygen in water can cause planktonic organism in the water body because of anoxic death by suffocation; Also can limit the photosynthesis of hydrophyte such as algae, influence the self-cleaning of water body; Oil pollutant is attached to the soil particle surface, in soil, forms oil film, makes air be difficult to penetrate, and destroys soil and the eubolism of microorganism wherein, influences the normal growth of crops; In the biological treatment system, oil content exceeds standard will influence active sludge and biomembranous eubolism, and effluent quality is difficult to guarantee.Therefore, it is extremely necessary handling oily waste water.
Oil content in the oily waste water exists with oil slick, dispersed oil, oil emulsion and four kinds of forms of dissolving wet goods usually.Because the difference of existence form, the method for handling oily waste water is also just different.At present external oil-contaminated water of oil field is handled the facility that adopts and is mainly contained settling pit, oil interceptor, inclined plate grease pond, removes oil tank, coarse jar, pressure slurry tank, flotation cell (post), pressure filter, single valve filter tank, combined type treating apparatus, hydrocyclone and fine filter etc. except that oil tank, coagulation naturally.The affiliated facility that adopts has various buffering system jars (pond), reclaims water pot (pond), backwash tank (pond), slop oil tank, medicament establishing system, various water pump and oil-water metering facility etc.
In recent years, some new equipment have been developed in the processing of oily sewage (mainly being oil extraction-generated waste water) abroad, like novel closed float tank, hydrocyclone, various combined type oil-water separators etc.The successful exploitation of these devices is all of great advantage to integrated and the reduction equipment volume and the construction costs etc. of the treatment effect that improves oily sewage, the treatment efficiency that improves equipment, realization treatment facility function.
Yet be not that single method is handled oily waste water and just can be reached the effluent quality requirement, several kinds of disposal routes of actual waste water treatment project needs are combined into various treatment process system and handle oily waste water.Along with science and technology development, the improvement technology of oil-contaminated water of oil field is strengthened when constantly exploring and is improved both at home and abroad in recent years.According to the data from abroad introduction, the characteristics and the important symbol of new oilfield produced water treatment process are that hydrocyclone is introduced flow process, substitute traditional oil removal and flotation cells.In the U.S. North Sea oil field re-injection oil-containing sewage treatment technique flow process, adopted 3 oil-water separators and 6 hydrocyclone series connection, the water quality after the processing can reach the requirement of re-injection water.Wherein oil content is reduced to below 20～30mg/L by 200～500mg/L (mainly existing with O/W type form of emulsion).In addition, the many oil removal by air bubbling technology that adopted of the U.S.'s its treatment process in newly-built oily water treatment station.U.S.'s Gulf oilfield produced water processing technological flow is made up of unit such as oil-water separator, flocculation, air supporting, GAC-FBR (activated charcoal biological fluidized-bed reactor), electrodialysis; Handle back day maximum oil content and be no more than 10mg/L, reached very strict emission control standards.Many scholars' research shows, handles the condensed oil sewage that contains some hardly degraded organic substances and generally adopts the biochemical oxidation method, and its technological process mainly comprises unit operationss such as oil-water separator, air supporting, chemical oxidation, biological membrane hydrolysis acidification, filtration.
Developed and produced multiple sewage-treating agent in order to improve the oily waste water treatment effeciency, comprised coagulant, flocculating agent, flotation agent etc.Wherein the hydrophobic polymer flocculating agent can be accelerated water purification speed as efficient water treatment agent, removes suspension and noxious material in the water.The disposal route of oily waste water is also a lot, and particularly handle oily waste water and have the treatment effeciency height, the residence time is short, energy consumption is low, occupation of land is little by the turbine air flotation method for wherein air supporting method, control and characteristics easy to maintenance.Add flotation agent during air supporting and can not only obtain better air flotation effect, and can shorten the flocculation reaction time, this is to reducing capital expenditure, cutting down the consumption of energy and operating cost has great importance in the actual engineering.
When handling oily waste water, have only chemistry (oxidation) method, mixed condensed gas flotation process will use chemical agent and play a role usually, generally speaking, the oily waste water treating agent can be divided into two types, i.e. flocculating agent and flotation agent.
After feeding bubble in the oily waste water, be not any suspension can both with bubble adhesion, be not to float to the water surface successfully with bubble, the particle diameter of the wetting state of this and oil emulsion, the size of elaioleucite, bubble is closely bound up.Therefore, need in waste water, add suitable flotation agent, change the physicochemical property of the suspension in the waste water, thereby improve the oil removal efficiency of air supporting method.
Function according to flotation agent is different, and possible component has three types: (1) cationic polymer.High-molecular coagulant adopting can be divided into anionic, cationic and nonionic on structure.In recent years, the high-molecular coagulant adopting of anionic and nonionic has been brought into play important effect in water treatment field, uses extensivelyr, and treatment effect is good.But high for some contents of organic matter, form the aqueous systems of colloid; Microparticle surfaces has negative charge; Cause the high-molecular coagulant adopting of anionic and nonionic can not the very high particulate of catch surface current potential; Do not reach processing requirements, therefore the research and development of cationic coagulant and use receive people's attention day by day.In the technology of handling oily waste water, its major function is a compression oil droplet electrostatic double layer, increases droplet size, helps to improve oil removal efficiency; (2) reverse wetting agent, it can change the wetting state of suspension in the water, strengthens the adhesive efficiency of bubble and suspension, helps to improve oil removal efficiency; (3) frothing agent helps to reduce bubble diameter, and rolling action spumes in the air supporting process.
Macromolecule flotation agent plays irreplaceable effect with its good flocculating result and advantage such as easy and simple to handle in water treatment, cause both at home and abroad and pay close attention to widely.In general, all to measure the effect that transmittance is explained flotation agent processing oily waste water.And the flco come-up rate index that judges is only adopted in experiment, and does not measure its transmittance, and its reason is: at present, the technology that oily waste water is often handled materialization and biochemical treatment combines, and materialization is handled generally as pre-service or advanced treating.
Flotation agent is in being applied to the process of oily water treatment; Its oil removal rate can receive the influence of flotation agent addition, its former because: at first the surface of the impurity in the water is a water wettability, the adding medicament after; Because the polar group in the medicament can be optionally adsorbed by hydroaropic substance; Then in water, the surface of hydroaropic substance sticks on the bubble with regard to being converted into lyophobic dust non-polar group like this, with floating to the water surface on the bubble.Yet along with the increase of flotation agent, suspension originally has been converted into hydrophobic surface and has gradually become hydrophilic, like this flotation effect nature variation; Secondly, in flotation agent, contain surfactant, can reduce the surface tension of water, stop micro-bubble and gather, and improved the dispersiveness of micro-bubble.After concentration surpassed certain limit, low excessively surface tension made the aggravation of water pollutant particle emulsified state, and surface potential raises, and the effect that at this moment contains in the water with the surface-active substance of elaioleucite surface identical charges then turns to its reverse side.Too much surfactant forms a large amount of hydrophilic micellas in water, if these micellas stick on the elaioleucite hydrophilic radical, will increase the elaioleucite hydrophilicity.If stick on the hydrophobic elaioleucite, also be that original hydrophobicity is transformed into water wettability on the contrary, bubble just can't adhere to particle mutually like this, and can only the belt surface activating agent come-up, form strong bubble, foam stabilization and oil removal rate descends.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the method for testing of a kind of flotation agent addition to the oil removal rate influence is provided, this method of testing can test out the influence of flotation agent addition to oil removal rate fast; Measuring accuracy is high, and operation steps is simple, and testing cost is low; Result through test; Thereby the addition of selective flotation agent targetedly improves flotation agent oil removal efficiency, energy savings and cost of sewage disposal.
The object of the invention is realized through following technical proposals: the flotation agent addition may further comprise the steps the method for testing of oil removal rate influence:
(a) preparation flotation agent;
(b) gather oily sewage and test its oleaginousness;
(c) in a plurality of test chambers, add the oily sewage of equivalent respectively, and be adjusted to identical pH value;
(d) flotation agent with the difference amount adds in the oily sewage respectively;
(e) leave standstill a period of time, test the oleaginousness of oily sewage respectively, and calculate the oil removal rate of different flotation agent additions, thereby obtain of the influence of flotation agent addition oil removal rate to oily sewage.
In the said step (c), test chamber is a beaker.
In the said step (c), regulate the pH value of clay suspension through HCl solution and NaOH solution.
The concentration of said HCl solution and NaOH solution is 0.1mol/L.
In the said step (d), the addition of flotation agent is respectively 100mg/L, 125mg/L, 150mg/L, 175mg/L, 200mg/L, 225mg/L.
In sum, the invention has the beneficial effects as follows: can test out the influence of flotation agent addition to oil removal rate fast, measuring accuracy is high; Operation steps is simple; Testing cost is low, through the result of test, thus the addition of selective flotation agent targetedly; Improve flotation agent oil removal efficiency, energy savings and cost of sewage disposal.
Embodiment
Below in conjunction with embodiment, the present invention is done further detailed description, but embodiment of the present invention is not limited only to this.
Embodiment:
The flotation agent addition that the present invention relates to is to the method for testing of oil removal rate influence, and its concrete steps are following:
(a) preparation flotation agent;
(b) gather oily sewage and test its oleaginousness;
(c) in a plurality of test chambers, add the oily sewage of equivalent respectively, and be adjusted to identical pH value;
(d) flotation agent with the difference amount adds in the oily sewage respectively;
(e) leave standstill a period of time, test the oleaginousness of oily sewage respectively, and calculate the oil removal rate of different flotation agent additions, thereby obtain of the influence of flotation agent addition oil removal rate to oily sewage.
In the said step (c), test chamber is a beaker.
In the said step (c), regulate the pH value of clay suspension through HCl solution and NaOH solution.
The concentration of said HCl solution and NaOH solution is 0.1mol/L.
In the said step (d), the addition of flotation agent is respectively 100mg/L, 125mg/L, 150mg/L, 175mg/L, 200mg/L, 225mg/L.
Result through said method records is as shown in the table:
Can find out from last table,, yet begin variation on the contrary when the flotation agent addition continues to increase flotation effect along with the increase oil removal rate of flotation agent addition is obvious gradually.Take all factors into consideration, flotation effect was best when the flotation agent addition was 175mg/L.
Above-mentioned method of testing can test out the influence of flotation agent addition to oil removal rate fast, and measuring accuracy is high, and operation steps is simple; Testing cost is low, through the result of test, thus the addition of selective flotation agent targetedly; Improve flotation agent oil removal efficiency, energy savings and cost of sewage disposal.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations to above embodiment did all fall within protection scope of the present invention.
Claims (5)
1. the flotation agent addition is characterized in that the method for testing of oil removal rate influence, may further comprise the steps:
(a) preparation flotation agent;
(b) gather oily sewage and test its oleaginousness;
(c) in a plurality of test chambers, add the oily sewage of equivalent respectively, and be adjusted to identical pH value;
(d) flotation agent with the difference amount adds in the oily sewage respectively;
(e) leave standstill a period of time, test the oleaginousness of oily sewage respectively, and calculate the oil removal rate of different flotation agent additions, thereby obtain of the influence of flotation agent addition oil removal rate to oily sewage.
2. flotation agent addition according to claim 1 is characterized in that to the method for testing of oil removal rate influence in the said step (c), test chamber is a beaker.
3. flotation agent addition according to claim 1 is characterized in that the method for testing of oil removal rate influence, in the said step (c), regulates the pH value of clay suspension through HCl solution and NaOH solution.
4. flotation agent addition according to claim 3 is characterized in that to the method for testing of oil removal rate influence the concentration of said HCl solution and NaOH solution is 0.1mol/L.
5. flotation agent addition according to claim 1 is characterized in that to the method for testing of oil removal rate influence in the said step (d), the addition of flotation agent is respectively 100mg/L, 125mg/L, 150mg/L, 175mg/L, 200mg/L, 225mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105676879A CN102478564A (en) | 2010-11-22 | 2010-11-22 | Method for measuring influence of additive amount of flotation agent on oil removal rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105676879A CN102478564A (en) | 2010-11-22 | 2010-11-22 | Method for measuring influence of additive amount of flotation agent on oil removal rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102478564A true CN102478564A (en) | 2012-05-30 |
Family
ID=46091276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105676879A Pending CN102478564A (en) | 2010-11-22 | 2010-11-22 | Method for measuring influence of additive amount of flotation agent on oil removal rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102478564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658170A (en) * | 2018-04-23 | 2018-10-16 | 蔡锦文 | A kind of heavy water oil slick absorption device of floating drum |
-
2010
- 2010-11-22 CN CN2010105676879A patent/CN102478564A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658170A (en) * | 2018-04-23 | 2018-10-16 | 蔡锦文 | A kind of heavy water oil slick absorption device of floating drum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206915935U (en) | Emulsifying liquid waste water processing system | |
| CN101311127A (en) | Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method | |
| CN105084615B (en) | Oil field wastewater treatment technique based on special membrane | |
| CN201959591U (en) | Oil-water separating device | |
| CN102478490A (en) | Determination method for floc settling velocity of hydrophobic polymeric flocculant | |
| CN108821508A (en) | The system and method for processing oily wastewater based on domestic sewage processing system | |
| KR20130012321A (en) | Continuous system for removing algaes and suspended solids on water using micro bubble | |
| CN201678531U (en) | Ship oily-water treatment apparatus | |
| CN107840530A (en) | Kitchen biogas liquor treating process and its special equipment | |
| CN102040310B (en) | Sewage treatment method for reinjection of produced water from oil field to low-permeability oil field | |
| Ahmad et al. | A review of municipal solid waste (MSW) landfill management and treatment of leachate | |
| CN102478564A (en) | Method for measuring influence of additive amount of flotation agent on oil removal rate | |
| CN203173917U (en) | Coking waste water coal tar treatment equipment | |
| CN203173936U (en) | Coking waste water oxidation and biochemical treatment equipment | |
| CN108996839A (en) | A kind of refuse transfer station waste water treatment process and equipment | |
| CN102478481A (en) | Performance test method of flotation agent for treating oil-containing wastewater | |
| CN102478479A (en) | Test method for influence of cationic monomer content to air floatation effect of floating agent | |
| Ogunbiyi et al. | Air flotation techniques for oily wastewater treatment | |
| CN209507926U (en) | A kind of percolation liquid treating system | |
| KR100449169B1 (en) | A Treatment System and Biological Treatment Method of Refractory Materials in Contaminated Sediment by Volume Reduction | |
| CN102478566A (en) | Method for measuring influence of usage temperature on oil removal rate of flotation agent | |
| CN1162360C (en) | Process for treating sewage of oil recovery | |
| CN102478565A (en) | Method for measuring influence of pH value on flotation agent oil removal rate | |
| CN107792992A (en) | A kind of combination treatment method of marine ship oily water | |
| CN102478480A (en) | Test method for influence of content of anionic monomers on air flotation effect of flotation agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |