Nearly 10 tonnes of waste is collected from Bowenpally market each day.
Dharnai near Bodhgaya in Bihar had no electricity and remained in darkness for more than 30 years.
To generate electricity, the researchers connect an aspirator pump to the water tap.
Dr Hema Sane wanted to follow the footprints of her parents and grandparents who lived without electricity.
In order to bring this appliance to common people, a student of class 8 designed a washing machine that works without electricity.