A NEW BEGINNING

 






By the people
  

IN FOCUS

Open letter to the
Prime Minister Atal Bihari Vajpayee

Khandwa,Catching every droplet
The lost pond
 

CAMPAIGN

From the courtroom
Face to face
Destroy, then revive

INITIATIVE

Woman power
Paying up
A tiny oasis in Uttar Pradesh
Smile!
CII’s water meet
Rotary’s initiative
Brick by brick
Nurturing the future
CSE’s pilgrims in Madhya Pradesh
Taking initiative
Experiments with water

NEWS FROM GUJARAT

Pure rain
In a great hurry!

JAL BIRADARI

As priceless as amrit
Reviving pynes

JAL YODHA

D V Subramanaian
Ashutosh Agnihotri


NEWS FROM CHENNAI

Rain centre inaugurated
The Alacrity cycle
Porous roads
Plumbers’ meet
Women’s meet


CSE' LATEST DESIGNS

Making a mark in Laburnam

TECHNOLOGY

Pollutants to bind roads
Make your own rain gauge
Smart farming tool
Techno tit bits


CLASSROOM

WATER WISDOM

FUNDING AGENCY

NEWS FROM ABROAD

WATER IN NEWS

AN OPPORTUNITY

READERS SPACE

BOOK/DOCUMENTS

VISUAL WATCH

WEB INFO

EVENT

NOTICE BOARD

    
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Vol. 4   

No. 4

August-September  2002

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Pollutants to bind roads

Techno tit bits

Family drip irrigation
Netafim, an Israeli trickle irrigation manufacturer, has introduced advanced ‘Family Drip’ irrigation systems for 900 families in Niger. It was initially developed for the average Chinese family living in semi-arid terrain. At present, thousands of such systems are operational in China.Latest drip irrigation technology is adapted to variable plot sizes and consists of standard emitters, pipes and filter equipment. It does not require pumps and electricity, as it works at low head and water is pressurised from a tank.

Water leak detection
Water leak noise loggers from Palmer Environmental, Sweden, have dramatically increased the speed and efficiency of detecting leaks in the water pipes. Installed in the Kiruna town of Sweden, it completes four night’s work done by three engineers within six hours by single operator. The sensors are deployed at pipe fittings, which transmit data to a portable receiver called Patroller. These sensors are highly sensitive, thus reducing the leakage by 20 per cent.

The chemically contaminated solid, solid wastes and lake silt can safely replace sand and concrete as the first layer of road. Before usage, these pollutants just need to be stabilised with gypsum or through vegetative methods," proposes B V Subba Rao, the president of the Centre for Resource Education (CRE), a Hyderabad-based research institute.In Japan the technique has been successfully applied.

CRE’s findings once approved by the Environment Protection Training and Research Institute will provide a financially viable to preserve urban lakes, without feeling the cash crunch.

Source: Deccan Chronicle 2002, CRE finds new use for polluted lake sediments, July 10

p11.gif Make your own rain gauge
It will cost only Rs two. The entire procedure is very simple. All you have to do is remove the cone of a two litre, plastic bottle. Place it upside down, without the cap. Prepare a scale (made of paper) and paste it inside the lower half of the bottle to measure the rain received.
(Vijay Kedia’s innovation; Tel: 0240-337974/ 339934)

Smart farming tool

Treadle pump (TP) is easy-to-use, affordable, and can be manufactured as well as repaired using local materials. The technique promises sustainable benefits to the small-scale farmers.

It is a manually operated irrigation devise consisting of a sheet or cast iron pump head, a bamboo frame with two pedals and a strainer. TP’s design can vary across the region. With a pumping head of 3 to 3.5 meters (m), it has the potential of lifting the water up to a maximum height of 7-m. Depending on the make, its cost may vary between Rs 576 (US $12) and Rs 1,680 (US $35). A study done by International Water Management Institute (IWMI), Sri Lanka, in India, Nepal terai and Bangladesh rates TP as the smartest farming tool. (www.iwmi.org) As it allows transition from subsistence to small-scale commercial farming, while also managing the groundwater.


Copyright 2002 Centre for Science and Environment
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