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
Water quality in Penukonda region of Anantapur district - A field report by Arghyam
A team from Arghyam recently visited an NGO called SEDS - Social Education and Development Society in the district of Anantpur, Andhra Pradesh. Posted on 16 May, 2011 06:23 PM

Introduction

 SEDS approached Arghyam to seek advice on the quality of drinking water in the area. Anantpur is the second most drought-prone area in India, and a lot of work has been done to deal with the water supply situation by the Government of Andhra Pradesh as well as NGOs and charities such as SEDS and the Sai Baba Trust, to name a few. There seems to be an adequate supply of water in the district, but very little or no attention has been paid to the quality of water.

 

 

Sustainable urban water supply in south India : Desalination, efficiency improvement, or rainwater harvesting?
The authors propose a framework that makes it possible to evaluate a wider range of centralized and decentralized policies for urban water supply than previously considered. Posted on 11 May, 2011 05:26 PM

Abstract:

River bank filtration in Uttarakhand - Blog post by Neelima Garg
Bank filtration describes pumping of ground water through drinking water supply wells (tube wells) from aquifers that are in hydraulic connection to adjacent rivers of lakes. Posted on 11 May, 2011 02:30 PM

Process of River Bank Filtration technology

Pumping induces seepage from the surface water into the aquifer and results in quality improvements enroute to the well by natural processes such as filtration, biodegradation, adsorption, redox reactions and mixing. RBF can also occur under natural conditions as a result of an influent river.

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’.

×