{"id":47414,"date":"2025-05-15T11:45:03","date_gmt":"2025-05-15T06:15:03","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=47414"},"modified":"2025-05-29T13:26:33","modified_gmt":"2025-05-29T07:56:33","slug":"about-desalination-technology","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/about-desalination-technology\/","title":{"rendered":"Desalination Technology"},"content":{"rendered":"<h2>Desalination Technology Latest News<\/h2>\n<p>The Defence Research &amp; Development Organisation (DRDO) has developed an indigenous high-pressure nanoporous multilayered polymeric membrane for seawater desalination.<\/p>\n<h2>Purpose and Strategic Importance<\/h2>\n<ul>\n<li>The project was executed by\u00a0<strong>Defence Materials Stores Research &amp; Development Establishment (DMSRDE), Kanpur<\/strong>, under the\u00a0<strong>Aatmanirbhar Bharat<\/strong>\u00a0initiative.<\/li>\n<li>The membrane was designed to meet the\u00a0<strong>operational needs of the Indian Coast Guard (ICG)<\/strong>, particularly to withstand\u00a0<strong>chloride ion-induced instability<\/strong>\u00a0in saline water.<\/li>\n<li>The technology is intended for use in\u00a0<strong>Offshore Patrol Vessels (OPVs)<\/strong>\u00a0of the Coast Guard, providing\u00a0<strong>self-reliant onboard freshwater capability<\/strong>.<\/li>\n<\/ul>\n<h2>About Desalination Technology<\/h2>\n<ul>\n<li><strong>Desalination<\/strong>\u00a0is the\u00a0<strong>removal of dissolved salts and minerals from saline or brackish water<\/strong>\u00a0to make it fit for human use.<\/li>\n<li>Two primary technologies used globally:\n<ul>\n<li><strong>Reverse Osmosis (RO)<\/strong>\u00a0\u2013 pressure-driven membrane-based filtration.<\/li>\n<li><strong>Thermal Desalination<\/strong>\u00a0\u2013 evaporation-condensation method using heat.<\/li>\n<\/ul>\n<\/li>\n<li>A\u00a0<strong>desalination plant<\/strong>\u00a0converts\u00a0<strong>seawater into freshwater<\/strong>\u00a0by\u00a0<strong>removing salts<\/strong>\u00a0to meet\u00a0<strong>drinking or industrial quality standards<\/strong>.<\/li>\n<\/ul>\n<h3>Working of Reverse Osmosis (RO) Desalination<\/h3>\n<ul>\n<li><strong>Osmosis<\/strong>\u00a0refers to the natural movement of water from an area of\u00a0<strong>low solute concentration to high solute concentration<\/strong>\u00a0through a\u00a0<strong>semi-permeable membrane<\/strong>.<\/li>\n<li>In\u00a0<strong>reverse osmosis<\/strong>,\u00a0<strong>external pressure<\/strong>\u00a0is applied to push water from a\u00a0<strong>high-solute (saline) side<\/strong>\u00a0to a\u00a0<strong>low-solute (freshwater) side<\/strong>, against the natural osmotic gradient.<\/li>\n<li><strong>Microscopic pores<\/strong>\u00a0in the RO membrane\u00a0<strong>allow water molecules<\/strong>\u00a0to pass while\u00a0<strong>blocking salts and other impurities<\/strong>.<\/li>\n<li><strong>Seawater typically has a TDS (Total Dissolved Solids) of ~35,000 ppm<\/strong>, while RO brings it down to\u00a0<strong>200\u2013500 ppm<\/strong>, making it potable.<\/li>\n<\/ul>\n<h2>Desalination Technology FAQs<\/h2>\n<p><strong>Q1:\u00a0<\/strong>What is desalination?<br \/>\n<strong>Ans:<\/strong>\u00a0Desalination is the process of removing salts and minerals from seawater or brackish water to produce freshwater for drinking or agriculture.<\/p>\n<p><strong>Q2:\u00a0<\/strong>What are the main desalination methods?<br \/>\n<strong>Ans:<\/strong>\u00a0Common methods include Reverse Osmosis (RO), Multi-Stage Flash (MSF), and Electrodialysis. RO is the most widely used.<\/p>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/www.pib.gov.in\/PressReleasePage.aspx?PRID=2128795\" target=\"_blank\" rel=\"nofollow noopener\">PIB<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Desalination is the removal of dissolved salts and minerals from saline or brackish water to make it fit for human use.<\/p>\n","protected":false},"author":8,"featured_media":47423,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[435,21,23],"class_list":{"0":"post-47414","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-desalination-technology","9":"tag-prelims-pointers","10":"tag-upsc-prelims-current-affairs","11":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/47414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=47414"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/47414\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/47423"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=47414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=47414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=47414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}