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Comment Separation Processes

Ceramic membrane filtration to be demonstrated for removing oil from produced water

By Tetsuo Satoh |

Japanese companies INPEX Corp. (Tokyo, www.inpex.co.jp), Chiyoda Corp. (Yokohama; www.chiyoda-corp.com), and Metawater Co., Ltd. (Tokyo, all Japan; www.metawater.co.jp) have been commissioned to build a small-scale demonstration facility that will use ceramic membrane filtration for treating produced water for Japan Oil, Gas and Metals National Corp. (JOGMEC). The commissioned work will take place at the Yabase Oil Field operated by INPEX in Akita Prefecture, and will run through January 31, 2016. In bench-scale tests (3,600 L/d) performed in Japan during 2013 and 2014, the companies demonstrated a number of achievements: that ceramic membranes are not only capable of removing suspended solids (SS) but also oil particles; stable operation in the field condition for influent containing 10–400 mg/L of oil and 20–320 mg/L of SS; permeate water quality was stable and good enough at all times, with oil below 10 mg/L and SS below 5 mg/L; cross-flow filtration worked efficiently to reduce fouling and realized stable operation; and the combination of ceramic membranes and the reverse osmosis (RO) system produces water quality with total dissolved solids (TDS) below 500 mg/L. Metawater’s commercial ceramic-membrane element (180-mm dia.…
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