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Sewage Plants Struggle To Treat Fracking Wastewater

MTorrice writes "When energy companies extract natural gas trapped deep underground using hydraulic fracturing, they're left with water containing high levels of pollutants, including benzene and barium. Sometimes the gas producers dispose of this fracking wastewater by sending it to treatment plants that deal with sewage and water from other industrial sources. But a new study (abstract) suggests that the plants can't handle this water's high levels of contaminants: Water flowing out of the plants into the environment still has elevated levels of the chemicals from natural gas production."

5 of 264 comments (clear)

  1. Re:Nothing to see. by compro01 · · Score: 4, Informative

    It's a movie quote. Specifically, Repo Man.

    http://www.imdb.com/title/tt0087995/quotes?qt=qt0280548

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  2. Fracking Exempt from Clean Water Act by jweller13 · · Score: 5, Informative

    Fracking was explicitly exempted from the federal Clean Water Act http://sites.duke.edu/sjpp/2011/ensuring-safe-drinking-water-in-the-age-of-hydraulic-fracturing/

  3. Re:Nothing to see. by MickyTheIdiot · · Score: 4, Informative

    John Wayne, oddly enough did perform in the last movie Howard Hughes made which was called "The Conqueror."

    It's relevant here because they chose a site that was downwind from a nuclear test site. There are pictures that exist of John Wayne holding a Geiger counter on set.

    As IMDB notes: As of November 1980, 91 of the 220 cast and crew members had developed cancer. Forty-six had died, including John Wayne, Susan Hayward, Pedro Armendáriz (who shot himself soon after learning he had terminal cancer), Agnes Moorehead, John Hoyt and director Dick Powell. The count did not include several hundred local Native Americans who played extras, or relatives of the cast and crew who visited the set, including John Wayne's son Michael Wayne.
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  4. I work for a company that makes fluid additives by Tator+Tot · · Score: 5, Informative

    I'd like to think that more people would have an idea of what is actually in these fluids. There is a lot of information out there. Don't say "BUT.. BUT... THE COMPANIES DON'T WANT YOU TO KNOW WHATS IN THEM!" because that's not necessarily the case. Southwestern Energy has a nice inforgraphic as to what can go into a frac fluid, and in approximate quantities. You can find many more online. Even Halliburton tells you what's in their fluids!

    We make a host of additives for frac fluids, like viscosifiers (the chemicals guar or xanthan gum), friction reducers like PHPA (the chemical partially hydroxylated polyacrylamide), and sand (the chemical silicon dioxide) or ceramic beads (typically bauxite based).

    The items mentioned in the article make it sound like "they are adding benzene and barium to the fluids, and we had no idea that they do this!". I'll help you guys out. Barite (barium sulfate ore) is added to every oil well in the world as a weighting agent for the drilling mud. It's solubility in water is nil. Would water that is flushed down a well that has been drilled capable of picking up barium that has formed a filter cake on the walls of the bore? Sure, but it's also in EVERY WATER OR OIL MUD USED IN EVERY WELL IN THE WORLD.

    Benzene in the frac fluid? Nobody adds benzene to frac fluid. Here is most likely how it got there: oil based drilling muds use diesel as a carrier fluid (if the drilling is done on land, not the case offshore). Diesel has 30% aromatic content (ie. benzene, toluene, xylene). IF the well was drilled with an oil mud AND the well was recently finished being drilled AND it was recently cleared out, then the first part of the "waste" frac fluid will probably contain benzene.

    They don't care right? WRONG. They do on site testing to make sure the sample doesn't sheen or have any type of oil based fluids in the water. If it does, then the water has to be treated before being disposed (i.e. sewage, lakes, rivers, etc). So my question to the people testing these fluids: At what point did they test for benzene? Did the frac water come from a well that was drilled using diesel? Did the frac water come from a well using water based fluids? Were these random frac waste samples? What part of the country did these frac water samples come from? Did the frac water encounter aromatic hydrocarbons in the formation?

    These things are needed to come to a conclusion as to where did these chemicals come from.

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    1. Re:I work for a company that makes fluid additives by Tator+Tot · · Score: 4, Informative

      1,2,4- trimethylbenzene is not benzene. Methylbenzene is also known as toluene, and by adding one more carbon you change the physiological effects in the body (benzene is cancerous; toluene isn't). Known carcinogens are not used in frac fluids.

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