Contamination, Pollution and Quality

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.

Organizer: Acara Institute on the Environment

Venue: Institute on the Environment (IonE) University of Minnesota, St. Paul Campus, 1954 Buford Ave, 325 VoTech Building. All presentations will be webcast live.

Description:

The Acara Challenge is a unique way for a university to get their students involved in entrepreneurship and sustainable design for social change. The purpose of the Acara Challenge is to: Engage students in a multi-discipline, multi-country collaboration to develop sustainable solutions and business models to challenging global social issues. Incubate and implement the winning plans into successful sustainable social businesses.

Abstract:

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.

 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.

Introduction

The data has been collected over a period of many years from 39 water quality monitoring stations along the main river and 102 stations on its tributaries which were setup in 2008/09.

The study focuses on the parameters for dissolved oxygen, (DO), biochemical oxygen demand (BOD) and faecal coliforms (FC) as these indicate the biological health of the river. The period of study for the river Ganga is 1999-2008. The study finds that most of the water quality parameters studied do not meet the standards.

 Even with its questionable merit, the superbug study has identified the need for us to question the focus that we have on finding  narrow solutions to health issues .It has also highlighted the urgent need to address the broader infrastructural needs of the country such as access to safe drinking water and sanitation

Image source: Wikimedia Commons  

The superbug study

New Delhi and the world was hit by panic last week because of a recent study published in the journal The Lancet Infectious Diseases  , which found a high level of water contamination acquired from drains and public taps across India's capital city. The water was allegedly contaminated with superbugs, or what has been referred to as bacteria carrying the NDM 1 gene. Four percent of drinking water samples (2 of 50 samples) and 30 percent of drain samples (51 out of 171 samples) were found to be contaminated with superbugs [1, 2].

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.