Did you know that all the water used by us can be recycled and reused so that not a drop of it is drained into our fresh water rivers? Yes, it means no more dumping of sewage (treated or untreated) to our rivers, and the best part is that now, all major cities in our country will implement it. If the government gets the states on board, there would be no industrial or household discharge from 140 drains that lead on to the Ganga. This will be a huge step in cleaning up the river and making sure we have cleaner, healthier water for drinking, irrigation and other uses.
What Are The Types Of Water Discharged?
There are two types of water discharged from our homes and industries:
Storm Water – It is rain water that flows through the storm water drains. Most cities have separate storm and sewage water lines. Storm water is easily treated and discharged into water bodies such as rivers and lakes. Storm water is best to recharge ground water levels.
Sewage Water – Waste water generated from both toilets and non-toilet outlets such as washing, cleaning, bath, etc. Some cities have separate pipelines for black water (toilet) and grey water (non-toilet).
Where Will All The Water Go?
Jamshedpur, the steel-city, will be the first zero liquid-discharge city in India. The Zero Liquid Discharge (ZLD) system here will have two plants, one with 10 million litres capacity and another that will process 30 million litres of sewage water. The plants separate dissolved solid and other waste from the water and then treat it to give back distilled water. This 100 percent recycled water will be reused for non-potable purposes, such as watering gardens in the city and supplying to industries (which are the biggest consumers of water). All coal and other power plants can use treated water and this would save an astonishing amount of fresh water.
In Bangalore, the water body will be supplying 60 million litres of treated water to a gas-fired power plant. Grey water is being used to water the garden city’s famous places such as Cubbon Park and Lalbagh. Golf courses are also required to use treated recycled water. The state’s pollution control board has made it mandatory to use treated and grey water to wash cars, flush toilets, and water the parks in order to prevent waste water from entering the city’s already polluted lakes.
Similar Efforts In Pune
In Pune, similar efforts are being taken to reuse treated grey water. Like segregation of waste, grey water and black water are best treated on site. We will cover more on how you or your housing blocks can effectively treat grey water and reuse it for flushing, gardening and washing cars.