نوع مقاله : مقاله پژوهشی
1 کرسی یونسکو در بازیافت آب، دانشجوی دکترای/ مهندسی محیط زیست دانشگاه تهران
2 رئیس کرسی یونسکو در بازیافت آب.دانشیار /دانشکده مهندسی شیمی دانشگاه تهران
عنوان مقاله [English]
Although water is one of the most important natural resources in the world, it is facing with several threats. This is because of some of the serious environmental issues such as climate change, population growth and pollutions. One of the most promising solutions to overcome these challenges is alternative water resources such as sea water, wastewater, brackish water and etc. It should be noted that water demand is not the sole parameter for determining the allocation of treated wastewater. Various economic, social, technical and cultural aspects should be considered. This study, conducted to study the possibility of recycling of wastewater in Tehran and the existing challenges and opportunities is reviewed. Tehran’s annual water consumption is estimated around 1300 million cubic meters, whereas 800 million cubic meters of total consumption provided by dam reservoirs around the city and the rest supply through legal and illegal wells in Tehran aquifer. In the country vision for 2030, total treated wastewater in Tehran is estimated to be about 850 million cubic meters per year. Therefore planning for allocation of this amount of water in agriculture, industry, landscape and aquifer recharge is essential. Overcoming the obstacles and the effects of wastewater reuse through applying appropriate technologies, moving toward the decentralized wastewater treatment systems and enhancing social acceptance will be necessary.