Good candidate for anaerobic ... Published June 8, 2018 19:52 by Rafael Gay-de-Montella MSc PEng, Water Wastewater Treatment Expert, Oil-Gas, Tailings, Boilers, ZLD; Evaporators, Sludge Good candidate for anaerobic treatment (i.e. UASB w/Bio-gas recovery), followed by aerobic polishing. Very little sludge if aerobic sludge redirected to feed. WIll comply a 20/20 spec.