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Development on sustainable water recycle, reuse and management

عنوان مقاله: Development on sustainable water recycle, reuse and management
شناسه ملی مقاله: CECAUD03_105
منتشر شده در سومین کنفرانس محیط زیست، عمران ،معماری و شهرسازی در سال 1399
مشخصات نویسندگان مقاله:

Aliasghar Azma - College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China
Nima Kianfar - Faculty of geodesy & geomatics engineering, K. N. Toosi University of Technology, Tehran, Iran
Yongxiang Zhang - Institute of Water Resources and Engineering Municipal Engineering Department, College of Civil Engineering and Architecture, Beijing University of Technology, Beijing, China

خلاصه مقاله:
The implementation of seawater desalination, a key strategy to secure fresh water supply inarid and coastal regions, is greatly thwarted by its high cost relating to high energy andequipment cost associated with pressure and the high system or membrane fouling associatedwith the bi-valence ions in the sea water. Given increasing regional water scarcity and thatalmost half of the world's population lives within ۱۰۰ km of an ocean, seawater represents avirtually infinite water resource. However, its exploitation is presently limited by the significantspecific energy consumption (kWh/m۳) required by conventional desalination technologies,further exasperated by high unit costs ($/m۳) and environmental impacts including GHGemissions (g CO۲-eq/m۳), organism impingement /entrainment through intakes, and brinedisposal through outfalls. Nano filtration (NF), a lower pressure membrane process with highrejection for divalent ions, had been identified as a key component to reduce the costs relating toboth pressure and fouling in the desalination process. Lower cost seawater desalination processeshad been developed by integrating NF with various types of desalination technologies includingreverse osmosis (RO), forward osmosis (FO), multistage flash (MSF), multi effect distillation(MED), membrane distillation (MD). This paper explores the state-of-the-art in present seawaterdesalination practice, emphasizing membrane-based technologies, while identifying futureopportunities in step improvements to conventional technologies and development of emerging,potentially disruptive, technologies through advances in material science, process engineering,and system integration.

کلمات کلیدی:
seawater desalination, water supply, sustainable water recycle

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1162891/