follow 69 coagulation treated water sand clarifiers key technologies precise technique strong team avoiding fines irrigation compliance discharge benefits dissolved solids composting landfilling sludges volume shallow ponds easily disinfection biological processes wastewaters effluents turnkey basis wastewater passes wastewater trickles industrial wastewater gravity filtration fresh water tiny particles depth knowledge environmental regulations aerated tank industrial effluent advanced treatment membrane filtration biological treatment mechanically removed flocculation biological treatment wastewater etps quality check biological treatment treatment combining membrane filtration repurpose cleaned water effluent treatment plant matters technical depth regulations assists businesses medium aerated lagoons group small particles pressuredriven membrane method save treatment expenses heavy inorganic materials impurities present determine celebrate success ount uv light guaranteeing producing biogas examples ozonation uv light combines physical chemical organic inorganic oil tertiary polishing system