Orange County takes secondary wastewater and treats it by MF, RO, UV/Ox. and stabilization. The evaporator in your scheme  will recover some water, but it is an expensive add on. You need to define Clean Water microbiologically  and chemically.  The WHO Guideline does that.

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Orange County takes secondary wastewater and treats it by MF, RO, UV/Ox. and stabilization. The evaporator in your scheme  will recover some water, but it is an expensive add on. You need to define Clean Water microbiologically  and chemically.  The WHO Guideline does that.