iranian steel producers association radio announced that the export of iranian steel ingots in the first two months of this year reached 1,444,100 tomans, which is the largest steel export with a 23% growth. according to the statistics of april and may of this year, 15,000 tons of steel products were also exported. compared to the same period last year, 40% more natural steel sections were exported, 407,000 tomans and 94,000 tomans flat steel sections , which shows an increase of 35%, 20% and 68%, respectively. sponge has recorded a new quorum and has increased by 24%. the ceo of tehran province water and sewerage company said that with the treatment of sewage and waste water , the industrial and agricultural sectors are supplied with water. in addition , 64,000 megawatt hours per year are supplied from the biogas treatment site. sewage house in south of tehran is produced today, excessive consumption of energy growth on the one hand and the opposite concerns of natural resources , on the other hand, have led us to identify and exploit new sources of energy. the use of wastewater is one