Water Technology

Reply by the Central Pollution Control Board (CPCB) regarding use of environmental compensation funds, 29/04/2025

Reply by the Central Pollution Control Board (CPCB) in compliance to the National Green Tribunal (NGT) order dated January 21, 2024 in the matter of ‘News item titled “Feeling anxious? Toxic air could be to blame” appearing in Times of India dated 10.10.2023’. NGT had directed CPCB to file a …

Clean option

function table() { var popurl="image/20051015/35-table.jpg" winpops=window.open(popurl,"","width=275,height=420,scrollbars=yes") } a water treatment powder has won the 2005 Stockholm Industry Water Award for innovative corporate development of water and wastewater process technologies. The powder

Toilet training

Nacka nature school is an information center on ways to manage wastewater. It was set up in 1989 at village Velamsund, near Stockholm city, Sweden, by the Nacka municipality, home to approximately 70,000 people. Velamsund is situated in an archipelago once greviously affected by sewage discharge and the toxic remnants …

Now in Gujarat

a high level of arsenic is present in treated industrial effluents in Gujarat's Golden Corridor belt, it was detected recently. Department of microbiology (dom), Gujarat University, Ahmedabad, says arsenic is getting mixed with the surface water in the area. dom plans further analysis in the coming months. "We have analysed …

Handy copper cure

Domestic sewage, industrial sludge and agricultural wastes pollute almost all surface water in the country. Filtration and chlorination are often used to clean it up for domestic utilisation. However, most areas in the country lack such facilities and many believe that well water from underground aquifers is a good source …

We found lots of muck

It isn't often that a post-graduate college decides to test the quality of water in its surrounding areas. In a five-month project begining January 2004, final year B pharma students of Gupta College of Technological Sciences in Asansol, West Bengal did exactly that. The students had to undertake a project …

Still stressed

the supply of recycled water for Bangalore's public parks has not started yet, although, a year ago, the Karnataka government banned the use of potable water and groundwater in such places. The reason: the Bangalore City Corporation (bcc) has no vehicles to transport recycled water from Bangalore Water Supply and …

Water vigil

researchers at the us Department of Energy's Oak Ridge National Laboratory (ornl) have developed a technology to immediately determine a poisoned water supply system. Named AquaSentinel, the technology detects toxins in a municipal water supply system by analysing the condition of the algae it contains. Algae are common inhabitants of …

Instant data

scientists at the Institute of Genomics and Integrated Biology (igib) in Delhi have developed a device for instant monitoring of organic pollution in wastewater. The Biochemical Oxygen Demand (bod) biosensor can analyse a sample and generate the results in less than 10 minutes, and that too, at the site itself. …

Towards a common goal

Thirsty Planet: Strategies for Sustainable Water Management

Watermaker

a us-based firm has recently launched a high-tech gadget in India with the alluring promise of resolving the water crisis.

Filtering the fine print

Water Filter The confusion resulting from reports about pesticides in bottled water and soft drinks saw a few companies sneak-ride upon the concerns of the bewildered common man. Take, for instance, the ad for Usha Brita Waterguard (in The Hindustan Times, September 6, 2003), which instead of detailing the cleaning …

Safe drinking

selling drinking water sans the Bureau of Indian Standard (BIS) mark can take you to jail. Acting on a petition filed by Vanishree Gnaneswaran, the Madras High Court recently issued notices to the Union health and family welfare secretary and the state municipal authorities. According to the amended Prevention of …

Tapping wastewater

WHEN the Union ministry of urban affairs and poverty alleviation issued a notification on July 28, 2001, making rainwater harvesting mandatory in Delhi, it had inserted another clause that went largely unnoticed: a stipulation that all structures discharging 10,000 litres and above should incorporate wastewater recycling for horticultural purposes. Though …

Pluck the dirt out

A solvent developed at the University of Alabama, usa , can snatch pollutants dissolved in water. The solvent can be tuned to snatch specific elements from water. The choosy solvent is one of a unique group of salts called ionic liquids, made up of electrically charged ions. The solvent may …

Filtered effluents

scientists at the Australia-based Commonwealth for Scientific and Industrial Research Organisation ( csiro) have developed a new technology that can clean polluted waterbodies. "The technique, known as the Filtration and Irrigated Cropping for Land Treatment and Effluent Reuse ( filter ), can solve the problems that are often associated with …

For a clean sip

researchers in the us have developed a pen-shaped battery-operated device that can quickly and safely disinfect contaminated drinking water. This device can prove to be highly useful for travelers, soldiers and victims of natural disaster. The operation of this device is very simple: just remove the pen's cap, remove a …

Reusing wastewater

with the advent of a new technology to remove chloroform, it has now become possible to clean and reuse the wastewater from pharmaceutical plants. Called the Purolite adsorbant technology, it removes chlorinated solvents from wastewater streams. Not only does it prevent the release of possibly dangerous wastes but can also …

Opportunity waste...

waste can actually be wealth that is misplaced

Diamond clear

The breaking down of toxic organic material is very important in the process of purifying water. Now, researchers at the Fraunhofer Institute for Thin Films and Surface Engineering, Germany have found that diamond-coated electrodes destroys even compounds such as polychlorinated hydrocarbons. Diamond electrodes are especially well-suited for conversion of organic …

Thriving on sewage

both the public as well as the industry in Chennai frequently face acute water problems. Sometimes, industrial units are left with no option but to close down. Madras Fertilisers Ltd ( mfl ) and Madras Refineries Ltd ( mrl ), located at Manali on the outskirts of the state capital …

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