The Treatment of petrochemical wast salty water for the optimization of recycling and reusing in the cooling towers with combination application of the promethee and decisionlab software

With the growing trend of industrial development and use of renewable and non-renewable resources in our country, concerns about the environment and its preservation is evident in the national. Development on the one hand and the other hand with the industry to date and efficient destruction of our precious environmental resources, including surface water and groundwater is interconnected And more attention to all the experts and big industrialists requires further. The aim of this study is to find an appropriate solution to the problem of saline wastewater is shazand Petrochemical Company, Due to the high amount of salt there is the possibility of reusing. The daily volume of complex m³/ hr 150 effluent EC μs/cm 4000, and is produced TDS mg/lit2500 Currently no purification will be sent directly to the evaporation ponds. n this study, the saline wastewater collection and analysis of data, including EC, TDS, SS, TOC, PH, TH, and COND is. And evaluate and compare the data with standard water cooling towers, water treatment methods RO ، MED ، EDR ،RO&MED ,RO&EDR Examined And best practices with regard to the initial cost of the device, the device useful life, capacity, allowable inlet water, product quality EC 50-100 μs/cm and TDS mg/lit500 less than 75% can be recovered using reverse osmosis for wastewater treatment were verified.