Within the activities of the cultural season in ERC has arrange a seminar titled "Waste water treatment processes" on Wednesday, 18.3.2015 on the Blue Hall in the center. The lecture was presented by researcher Eman Shaker Awad, and the Director of ERC, Dr. Abdel-Hamid Mohammed Jawad, and a number of researchers and students were attended. Water treatment residues and intended operations were reviewed. The researcher present other element, sources and structures of waste water, were presented with an example of the treatment plants in Iraq, a Rustumiya station. She explained the processes used, and the efficiency of its work to remove contaminants and access to the allowable limits for the use of treated water for irrigation purposes.