Treatment and Purification

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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
Recycling of water during distillation in laboratories and industries saves gallons of water - Blog post by Dr K K Sharma
Glass distillation is commonly used in almost all the laboratories in the world for preparation of distilled water, plant extraction and in many pharmaceutical processes. Posted on 11 May, 2011 02:21 PM

 In the process of distillation vapors passing through the condenser tube are cooled and condensed by water flowing through condenser tube in the condenser unit of the apparatus. In almost all laboratories the water used for cooling the condenser tube is coming from the water supply tap near the wash basin. The precious water after circulating through the condenser tube is left into the drain as wastewater. It has been observed that about 40 liters of water is required for cooling for making 500 ml of distilled water. The water after cooling is generally left to go into the drain.

The following video has been prepared by me and is released by youtube. The video gives good information for those who want to learn about the traditional method of glass distillation and the modified Recycling Distillation Technique (Sharma, 2004) that saves gallons of water.

 

 

Peel potential - Bananas can filter heavy metals from water - Article from Down to Earth
Banana peels may be notorious for causing slips in daily lives, but they can also prevent harmful chemicals from slipping into the body. Posted on 25 Apr, 2011 12:26 PM


Development of training module for water safety plan in urban areas - A document by ESCI
A new Risk Management tool to improve Water Safety Plan
Posted on 20 Apr, 2011 03:48 AM

A Water Safety Plan (WSP) is an improved risk management tool designed to ensure the delivery of safe drinking water. It identifies hazards, means to control them, means and actions to identify loss of control and its restoration. It comprises system assessment and design, operational monitoring and management plans (including documentation and communication). Water quality guidelines have been issued by the WHO.

Guidance manual for drinking water quality monitoring and assessment - A document by NEERI and NICD
Drinking water must meet Quality! Safeguarding the health of People. Posted on 20 Apr, 2011 03:09 AM

In order to safeguard the health of the people, drinking water must meet quality standards. The main issues involved in drinking water safety are water quality management, surveillance and control mechanisms.

Levels of contaminants need to be ascertained through standard procedures. Each agency involved in water supply in India, has its own laboratory test practices and this manual details methods for all parameters adoptable by all laboratories.

Drinking water quality monitoring and development of surveillance mechanisms - A pilot study done by NEERI in New Delhi
The guidelines on drinking water quality aim to protect public health and ensure this is through the adoption of Water Safety Plans Posted on 20 Apr, 2011 02:30 AM

The WHO guidelines for drinking water quality aim to protect public health and the key way to ensure this is through the adoption of Water Safety Plans (WSP). WSP includes setting of health targets, risk analysis and its assessment to identify priority hazardous scenarios and management of the risk.

Water safety plan: A manual for pilot study areas of Hyderabad
The aim of this manual is to facilitate development of Water Safety Plans focusing particularly on organized water supplies managed by a water utility. Posted on 20 Apr, 2011 02:03 AM

The most effective means of consistently ensuring the safety of drinking water supply is through the use of a comprehensive risk assessment and management approach, that encompasses all steps in water supply from catchment to consumer. Such approaches are called Water Safety Plans (WSPs).

The aim of a WSP is to organize and systematize records of management practices applied to drinking water and to ensure workability of such practices to organized drinking water supply.

Guidelines for water safety plans for rural water supply systems - A document by SIAES and WHO India (2009)
Delivery of safe drinking water is vital for protecting public health and of promoting more secure livelihoods. Posted on 20 Apr, 2011 01:10 AM

HandpumpDelivery of safe drinking water is vital for protecting public health and of promoting more secure livelihoods.

The traditional approach to water quality and safety management has relied on the testing of drinking water, as it leaves the treatment works or at selected points, either within the distribution system or at consumer taps. It is referred to as ‘end‐product testing’.

Application of Composite Correction Program for improvement in efficiency of water treatment plants - A WHO paper
Safe drinking water, sanitation, water purification, secured supply, are all unchecked on goals' checklist; emphasizing on the need of intricate tools and plans and their implementation. Posted on 20 Apr, 2011 12:41 AM

The goal of safe and affordable drinking water and sanitation has not yet been achieved. The current practices of water purification are inadequate to produce secured water supply. Maintaining health protection at water supply systems has become more challenging with resistance of some pathogens to disinfection using chlorination and an increase in the immuno-compromised population (e.g., people with HIV, organ transplant patients, the elderly).

In this context, it has become essential to develop various tools such as Composite Correction Programme (CCP) and Water Safety Plans (WSP) to improve water purification and distribution systems, to achieve the goal of providing safe drinking water.

Assessing acute Gastroenteritis risks associated with water quality and sanitation in Hyderabad city - A paper by the Institute of Health Systems (IHS)
The quality of drinking water is a vital element of public health and well-being. The most effective means of consistently ensuring the safety of a drinking-water supply is through the use of a comprehensive risk assessment and risk management approach that encompasses all steps in water supply from catchment to consumer. Posted on 19 Apr, 2011 11:35 PM

The quality of drinking water is a vital element of public health and well-being. The most effective means of consistently ensuring the safety of a drinking-water supply is through the use of a comprehensive risk assessment and risk management approach that encompasses all steps in water supply from catchment to consumer.

WHO guidelines on water quality term these approaches as water safety plans (WSPs), developed to organize, systematize and apply management practices in drinking-water quality.

Bio-remediation project announced for Buddha Nala, Ludhiana - MoEF Press release
This speaks of the use of in-situ bio remediation to restore the Buddha Nala in Ludhiana Posted on 13 Apr, 2011 11:14 AM

Following the invitation of Member of Parliament (Ludhiana) Mr. Manish Tewari, the Hon’ble Minister for Environment and Forests Mr. Jairam Ramesh along with officials of the Ministry of Environment and Forests including the Chairman of the Central Pollution Control Board, visited the site of the Buddha Nala in Ludhiana, Punjab in September of 2010.

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