As per the Ministry of Environment, State of Qatar, there shall be requirement of maximizing Recovery and Reuse of Treated Industrial Water (RRTIW) and all the treated water shall be recycled into the QCHEM/RLOC plant. In order to meet the Ministry of Environment requirement of minimum treated water discharge to sea, QCHEM/RLOC intends to further purify the treated water stream nos. 1, 2, 3 & 4 in a "RRTIW" plant.