Hydraulic Fracturing- Waste Water Treatment.

Treatment isn't required, the wastewater can be pumped into deep injection wells, at least in Ohio as per bellow link into deep injection wells. The waste coming back is also only 15-20% of the volume that was injected (again per the bellow link)

I don't think it's too serious an issue as this type of waste CAN be treated as well as re-injected however it will take a lot of inspectors to make sure the remainders are properly taken care of.

You should immediately add this information to your website, it's also important to note that only about 10-15% of the water sent down comes back up. Which I find in disagreement with your reference on the site of 80%.

I think the truly important part is to make sure that what is supposed to be done with this waste is actually happening. Having worked in light industry most of my life I see a serious lack of inspection and enforcement of existing environmental regulations.

I notice a drastic difference in the amount of water claimed to have to be disposed of, the PDF I linked suggests 20% yet you claim 80% I see factual citations for either claim lacking in detail.

Brine solutions are actually quiet easy to waste treat, they just require expensive reverse osmosis plants (which can be portable) which cut into profits so it's not a good friend to the bottom line. Injection well are probably a best bet but probably vary widely in practicality depending on local geology.

There's so much lack of information and disinformation on this topic that it is virtually impossible to form a sane opinion on it.