Treatment and Purification

Featured Articles
December 2, 2019 Water stewardship is an approach predicated on the concept that water is a shared resource and so water risks are also shared risks that everyone in a catchment will face
Picture credit: Romit Sen
November 21, 2019 A report by NIUA brings to light the chinks in Jaipur's sewage system and suggests some solutions.
Routine check done by the sewage treatment plant staff in Delawas, Jaipur. The plant is part of the ADB best practices projects list. (Image: Asian Development Bank, Flickr Commons)
November 18, 2019 Bangalore's water utility is understaffed, under financed and unable to service the city's water needs.
Image credit: Citizen Matters
November 13, 2019 Policy matters this week
A domestic RO water purifier
Is desalination worth its salt?
Desalination of seawater is emerging as a solution to global water crisis. India, too can benefit from it. Posted on 06 Oct, 2017 11:56 AM

In India, fresh water is depleting fast with the rise in consumption for economic activities. Poor management of water resources has led to overexploitation of groundwater. The World Resources Institute’s March 2016 report said 54 percent of India was water stressed, with scarcity affecting every part of the country except the Himalayan region and the ghats.

Desalination of seawater could solve India's water crisis.
Removing chromium from polluted water using hyacinth
A new method for removing chromium-6, a highly toxic heavy metal, from waste water has been developed by a group of scientists from India and Ethiopia. Posted on 07 Sep, 2017 04:59 PM

Heavy metal poisoning is a growing concern in many parts of the country. A new method for removing chromium-6, a highly toxic heavy metal, from waste water has been developed by a group of scientists from India and Ethiopia. They claim it to be low-cost and safe.

Water hyacinth. Image courtesy India Water Portal.
Removing fluoride with nanoparticles
A new method developed by a team of Indian researchers uses nanoparticles to remove fluoride from drinking water. Posted on 29 Aug, 2017 12:32 PM

A low-cost method to remove fluoride from drinking water with specially made teabag-like pouches has been developed by a team of Indian researchers. 

What happens to your e-waste?
Though informal e-waste handling, segregation and import are prohibited by the law, e-waste business is thriving in the country. Posted on 05 Aug, 2017 05:44 PM

Take a walk through the maze of lanes at Seelampur in north-east Delhi, you could see small children rummaging through electronic waste that has made its way here from all over north India. They segregate end-of-life electrical and electronic products, prise them apart, put them through acid wash and also burn circuit boards in the hope of extracting precious metals.

Boys sort discarded computer parts as sparks fly from a grinding machine.  (Image: Greenpeace, Flickr Commons; CC BY-ND 2.0)
Course on: Water Sensitive Urban Design and Planing, CSE
Centre for Science and Environment (CSE) is organizing a five day training programme on “Water Sensitive Urban Design and Planning” (WSUDP).
Posted on 03 Aug, 2017 04:22 PM

The training programme will follow a mix method approach involving lectures, in-class exercises, interactive discussions and audio-video training support. A full-day field exposure visit will be organised for participants to explore best management practices on RWH and DWWTs.

Accessing clean water easily
An innovation makes it possible to treat water even before it leaves a hand pump or a borewell, giving easy access to safe water in remote areas. Posted on 26 Jul, 2017 12:20 PM

The United Nations, in its sustainable development goals (SDGs), has earmarked 2030 as the year by which universal and equitable access to safe and affordable drinking water for all is to be achieved.

Faecal contamination of water is a big issue in rural areas. (Source: Taraltec)
Blind spots in WASH
Many gaps in the various WASH programmes need to be fixed to ensure the ultimate goal of sustainable access to water and sanitation for all by 2030. Posted on 08 Jul, 2017 07:48 PM

The current set of government programmes such as Swachh Bharat Mission (SBM), National Rural Drinking Water Programme (NRDWP) and Atal Mission for Rejuvenation and Urban Transformation (AMRUT) have gone a long way in improving access to water and sanitation services in India.

Drinking water situation in India continues to be grim. (Source: IWP Flickr photos)
Clean Kali: All eyes now on government
The water of East Kali is heavily polluted. It would hopefully change with the NGT taking notice of it. Posted on 03 Jun, 2017 07:58 AM

Rampura, situated in Bulandshahr district in western Uttar Pradesh, is one of the 1,200 villages on the banks of the 300-km long East Kali, a tributary of the Ganges. The river is named after goddess Kali who, according to the Hindu mythology, is fierce and fights evil by ingesting it.

The polluted Kali river. (Image source: Neer Foundation)
A village becomes water rich
How restoration of traditional ponds, rainwater harvesting and wastewater treatment saved a village from water scarcity. Posted on 26 May, 2017 05:05 PM

Located in Uttar Pradesh’s Baghpat district, with vast agricultural fields growing sugarcane, rice, wheat, jowar, chana and all kinds of seasonal vegetables, Dhikoli in Pilana tehsil comes across as a bustling and prosperous village.

A johad after restoration.
The dirty picture
A hard-hitting documentary film ‘Kakkoos’ looks at the politics behind the banned practice of manual scavenging and how the civil society connives to keep it alive. Posted on 12 May, 2017 11:27 AM

Kakkoos, a compelling documentary film on manual scavenging in Tamil Nadu is all about showing the practice as it is without any filter.

Manual scavenging is a caste issue. (Image: Divya Bharathi, Facebook)
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