Small$-$scale, reverse osmosis equipment is available for point$-$of$-$use $($or household$)$ purification for wastewater, although its expense limits it adoption. Below are two schematics of small$-$scale reverse osmosis systems. How much energy is required to purify seawater using each system? Which system requires less energy? By what percentage? The activity of the wastewater is $0\mathrm{.}98.$ Problem $1.$ Reverse osmosis

Small$-$scale, reverse osmosis equipment is available for point$-$of$-$use $($or household$)$ purification for wastewater, although its expense limits it adoption. Below are two schematics of small$-$scale reverse osmosis systems. How much energy is required to purify seawater using each system? Which system requires less energy? By what percentage? The activity of the wastewater is $0\mathrm{.}98.$