Length, area and volume are expressed in three different units in specific flux. To resolve to a single unit of length requires converting gallons to either cubic feet or cubic inches. Then there’s the concept of 'pounds force', force being mass times gravitational acceleration...
The MBR Blog
Unless they’ve spent the last 10−15 years living in a cupboard, pretty much anyone working in municipal wastewater will at least be aware of the issue of micropollutants: trace quantities of anthropogenic materials which are onerous to the environment.
A long-standing notion regarding wastewater is its potential to provide a useful resource, rather than being viewed as a waste. This is not completely far-fetched. Wastewaters high in readily biodegradable organic carbon can be anaerobically treated to provide methane.
A while back I posted a discussion on LinkedIn asking for comments on what readers regarded as being the most challenging industrial effluent for treatment using an MBR. It was largely ignored (a common enough, and entirely justifiable, happenstance).
It can be boring to hold forth about the bountiful merits of a fellow academic in glowing terms but I find myself waxing lyrical on the paper-writing machine that is Dr Fangang Meng of Sun Yat Sen University.