A look at technology that helps face water crisis

Chennai: With severe water crisis plaguing the city for the past several weeks, residents are left facing dire situations. Some are forced to chase Metrowater tankers for their daily needs. Solutions are being sort after to over come this major issue.

In this article, News Today complies a list of prominent solutions that have always favoured citizens.

Rooftop solution

The rainwater harvesting method has provided a solution that can be practiced easily in every household.

It is a simple model where the roof acting as a catchment for rainfall, which after flowing through a series of filters and pipes is stored in ground-level containers for direct use or recharged into ground water.

Cementing hope

Ferro-cement Tanks is a low cost alternative for expensive water harvesting containers made of masonry, plastic and RCC. It has proved highly effective in high rainfall regions where large amount of water need to be stored in clean form.

These tanks require materials like sand, cement, mild steel bar and galvanized iron wire mesh. They can be easily constructed. It’s light in weight and can be moulded into any shape required.

It is believed to last for around 25 years with little maintenance. It can be appropriate for use in Indian villages and disaster prone areas as its fireproof and tough.

Peddling water

Cycle run water pumps are a saver of time and cost of electricity and fuel, this technology utilizes human power generated by pedalling a bicycle to lift water from streams, ponds, canals and wells.

When cycle is pedalled, it creates an up and down motion of pistons which pressurizes water flow to outlet. A portable model which can be installed on site has also been developed.

Designed for small scale farmers who don’t have capacity to afford costly diesel rum motors, this arrangement can bring a flow of 100 litres per minute. The complete unit is made of cast iron and aluminium.

Syringe

Most of the open wells and tube wells in coastal areas contain salty water due to seepage of sea water.

Rainwater harvesting is a viable option for solving the issue of drinking water, but construction of rainwater overhead tanks is unaffordable for marginal farmers.

According to media reports, Antoji in Kerala has innovated a cost effective method for harvesting rainwater in coastal areas. Rainwater is collected from the roof tops of houses and stored in a pressure tank on the ground and with the help of PVC pipes, water is lowered below sea level (16-24 feet).

The water is retained in the underground water column which is then harvested during summer by a simple piston pump or motor by constructing a tube well in the vicinity. It has proved successful in diluting recharging ground water in coastal areas of Kerala, and Antoji has installed 150 tanks in different parts of Kerala.

Wheels up

Water wheel comes from a foreign visitor who was inspired by women from villages of Rajasthan, who carried round earthen matkas on head for long distances in hot weather.

This invention has made carrying water not only an effortless but fun activity. It is a round wheel shaped storage tanker with an attached handle on top to provide painless mobility.

It has already become popular in villages of Gujarat, Madhya Pradesh and Rajasthan. Designed to reduce the drudgery and save time of working women, water wheel can store upto 10 to 50 litres of water in hygienic conditions. It’s designed for lasting on rough terrains and made from high quality plastic.

NT Bureau