公开(公告)号：US09695068B2

公开(公告)日：2017-07-04

申请号：US14071990

申请日：2013-11-05

Applicant: DREXEL UNIVERSITY

Inventor： Young I. Cho ,  Alexander Fridman ,  Alexander Rabinovich ,  Daniel J. Cho

IPC: C02F1/00 ,  C02F1/04 ,  C02F1/46 ,  C02F1/461

CPC classification number: C02F1/4608 ,  C02F1/001 ,  C02F1/04 ,  C02F1/4602 ,  C02F2201/46175

Abstract: The present invention consists of a method of pre-treatment of adulterated water for distillation, including adulterated water produced during hydraulic fracturing (“fracking”) of shale rock during natural gas drilling. In particular, the invention is directed to a method of treating adulterated water, said adulterated water having an initial level of bicarbonate ion in a range of about 250 ppm to about 5000 ppm and an initial level of calcium ion in a range of about 500 ppm to about 50,000 ppm, said method comprising contacting the adulterated water with a non-thermal arc discharge plasma to produce plasma treated water having a level of bicarbonate ion of less than about 100 ppm. Optionally, the plasma treated water may be further distilled.