District heating driven membrane distillation for advanced flue gas condensate treatment in combined heat and power plants

This investigation involves recent work on developing membrane distillation (MD) as a novel separation technology for flue gas condensate treatment in combined heat and power (CHP) applications. Flue samples were obtained from municipal solid waste bio-fuel fired CHP facilities tested laboratory-scale air gap MD equipment. Separation efficiencies other water quality parameters measured, the outcomes show that high-quality clean can be recovered, i.e., conductivity <5 mS/m; total organic carbon <2 ppm; hardness <0.15 °dH; pH ∼7.5; turbidity <1 FNU. Strict discharge limits cadmium could not achieved all trials. aspect is examined further detail with respect to potential mechanisms attributed non-ideal of contaminants below parts per billion limit. Beyond this, an industrial scale district heating driven system was designed analyzed. The estimated annual thermal energy demand 88 GWh treating 500,000 m3 year, expected cost around 2.6 $/m3.