Although the contamination of wells with petroleum waste in Jaffna in Northern Sri Lanka had been reported by many people, their claims are being challenged by many, especially local politicians, citing the lack of research evidence in this issue.
How can we remove Oil From drinking water?
I think fractional distillation can do. This works with different temperatures for different compounds. so you can get your water before the oil or the other way round.
It depends a lot...but first of all you need to understand in which forms the oil is in the water...if it is emulsified form for example...Anyway, nowadays in my opinion you can get drinking water from contaminated water with oil for instance...but it also depends in which concentration the contamination is present....It also depends on the costs and how much is your budget....
But i think your question must be more specific....
Making drinking water safe for human consumption after oil contamination will involve at least two steps mainly bulk separation followed by trace removal of all hydrocarbons. The cost of the technique is an important factor that's why there is ongoing research interest in coming up with cost-effective methods. Fractional distillation is energy intensive and volatile compounds in oil will be an issue. Centrifuge/cyclone is all also energy intensive and only applicable for bulk removal.
There are many ways it depend on task.
1. If you need jast clean drink water. You should move water in tank and treat it for cleaning - there is a lot of technology.
2. If you need to clean one time polutted well of drinking water. You should remove polluted groun and water and treat it.
3. If you have permenently-polluted aquifer. 3.1 You may cleaning system wherein polluted water before use treated like deskribe in p.1.
3.2 You may establish in aguifer permeable reaction barrier for sorption of petrollium derivatives. But it very expensive way.
Challenging part is removal of heavy metals(Ni, V, Cu, Cd,Pb,etc), specially particle size less than 100 microns. Heavy metals are very dangerous substance.
Is there any filtration process available to remove micro particles?
In my point of view, Best solution is Divert the Mahaweli river to north side through kanagaraayan river to iranamadu reservoir, Then We can get drinking water without reduce the supply water to paddy field as permanent solution but it will take long time. As temporary solution, Urban council must supply good quality drinking water to public. Rain water harvesting system also considerable solution. Rain water from roof can be store in tank or underground sump. I believe, very easy to purify rain water by basic filtration process. Jaffna people may get drinking water from individual harvesting system at least 3 to 6 months during rainy season depends on capacity of storage tank.
Hallo, as mentioned by the others, all depends on the amount of water and degree of pollution. Often used technologies are flotation and rotating filter construction (rotostream) etc. Smaller amounts may be adsorbed that is often namend "absorbed " on solid adsorbers.
Conventional methods are not available when there is bulk oil pollution. Specific techniques are available to remove pollutants after identifying the kind of pollutant. In the case oil pollution of drinking water wells is Jafffna, the best is identify the source and stop it as soon as possible.
I assume we are in a typical drinking water protection situation with some µg/L. A cheap one is using a sandfilter, that might grow bacteria over a long time that are able to mineralise a part of the hydrocarbons. This is anyway a good first step.
A reasonable (cost effective) second step is an column or layer filtration on granulated activated carbon which would sorb hydrocarbons from the water (needs to be replaced every few months or so, depending on dimensions.
A pretty costly step could be nanofiltration/reverse osmosis. dpending on membrane fouling the membrane needs to be replaced and the pressure to get the water through the membrane is also costly.
If the concentrations are higher than that and actually oil is swimming on the water you find a lot of OK suggestion upfront
There are several manufacturers providing oil absorbing or adsorbing cartridges for years, and none are as capable as The Oil Eliminator. These cartridges range from the basic polypropylene cartridge, to polymeric surfactant infused cartridges, modified polymer filled cartridges, modified cellulose cartridges, and modified organoclay cartridges. While each is capable of removing the free oil and grease in low concentrations, none have much of an effect on high concentrations of oil, mechanical emulsions, surfactant based emulsions, or on water soluble hydrocarbons. The Oil Eliminator is different! It performs in all these situations, without compromise.
My Dear,
How can I remove oil from drinking water if drinking water becomes contaminated?
You could remove pollutants from drinking water by creation of water or filtration of water
Dear Saravanamuttu Subramaniam Sivakumar,
Very interesting question to raise the practical problem in any or all countries which goes un noticed so far. See the following idea to develop and explore a novel technology for water oil separation.
There is a well established technology to produce large scale hydrophobic sand which repulse water. There is also a well developed technology to produce oil repulsing sand. Interestingly any sand can be made to have such characteristics as to repulse the water or the oil by nano layer coating on the sand particles surface. The production of such hydrophobic sand with oil absorption; or only oil repulsion can be produced at the rate of few tons of such magic sand per day.
Thus, I think large scale water purification from oil mixed water can be achieved using proper combination of the hydrophobic sand, oil repulsing sand and the normal sand. Though it would need some feasibility experiments to be done to optimize and realize the oil water separation. To develop such technology further interested people can contact me for the desired quantity of hydrophobic sand production etc. Hope it would help to find a solution for water purification from oil polluted ground water or to restrict oil leakage to ground water from oil pipes leaking. I may help if contacted for more details about large scale and small scale hydrophobic sand production etc.
My Dear,
There was a mistake that I wrote creation, it have to be aireation
There are many ways to do that:
1. Do nothing by natural attenuation by leaving the system to recover. It may takes long time
2. In-situ remediation by injecting some nutrients that help bio-degradation.
3. Pump and treat.
I attach two documents in relation to this for your additional refrance
Article Ground Water Quality Improvement of Jaffna Penensula of Sri ...
Conference Paper Ground Water Availability in Jaffna Peninsula and it's Susce...
https://www.youtube.com/watch?v=KzzkYYYPNxI
watch this video. Or contact me for alternate industrial solution.
S Dear aravanamuttu Subramaniam Sivakumar,
There are different ways, but by blowing water in to water body is one them.
filter through beds of Diatamaceous earth and chitosan flakes
by using of solvent extraction method u refine oil from water.as a solvent u used n hexen.
well I guess the most main stream approach is:
step 1)do phase separation for the fractions that swims on top of the water.
step 2) sorb residues to granulated activated carbon
in the long run this process could be amended by:
1) phase separation, 2)biofiltrations (let microorganisms metabolise the oil 3) granulated activated carbon ... thisway You would expect to increase the lifetime of the carbon.
we could use some organic absorben to overcome this oil on drinking water
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