Containerized Effluent Treatment Plant 100 KLD, Effluent treatment plants (ETP) are used for the removal of high amounts of organic compounds, debris, dirt, grit, pollution, toxic, non-toxic materials, and polymers, etc. from the industrial effluent concept of containerized treatment plants means that a ready-to-operate installation of wastewater treatment system is pre-assembled inside a 20' or 40' ISO standard container to save space and allow the fastest possible launch of the wastewater treatment on sit.