No water to clean toilet? No problem. Here's water-less toilet to your rescue

No water to clean toilet? No problem. Here

Submitted by Editor on Wed, 2016-12-14 20:02 Bengaluru: Foul-smelling urinals, the bane of any home, not to mention our cities, could be history if there is mass adoption of new water-less toilet technology created by a Coimbatore-based scientist. India’s premier research institute, Indian Institute of Science (IISc) has shown the way by adopting this rare technology. Dr S Krupakar Murali’s patented device named ‘Vyuh’ can turn regular urinals into waterless urinals. Dr Murali says the low cost method ensures urinals are not only stench free but also have lower bacterial load. This technology obviates the use of expensive cartridges and sealants, caustic chemicals for cleaning, although like any other device in the market some maintenance is needed. According to Dr Murali, the eco-friendly device can be fitted to any existing urinal bowl “without additional installation cost”. “This device will ensure that your toilets do not stink. Since there is no water used, there is lesser growth of bacteria and it saves up to 1.71 lakh liters of fresh water per urinal per year,” says Murali, adding that 18 institutes in Tamil Nadu, Karnataka and Andhra Pradesh were already using the device. “The recent one was installed in the men’s hostel at the Indian Institute of Science, Bengaluru,” says Murali.  Explaining its functionality, Dr Murali, a KL University graduate, who holds a doctorate from the University of Wisconsin, Madison, USA, says Vyuh’s patented technology ensures that urine flows in one direction. “Even the bubbles do not come up. The device is designed in such a manner that the odor (a gas) does not come out of the plumbing,” says Dr Murali.  According to him, existing urinals use on an average nearly three litres of water to flush. This means that a single urinal uses fresh water equivalent to three average sized swimming pools. “We are wasting fresh water to flush urinals that could otherwise be used for drinking purpose,” he says. Dr Murali says he began working on devising stink-free toilets after seeing the plight of his own wife and daughter, who were uncomfortable using the stinking public urinals during a family trip. “By installing Vyuh, any institute that has ten urinal bowls can save up to ₹17,000 to ₹ 28,000 in water costs per urinal depending on the location,” says Dr Murali. “This is because in Bengaluru, a tanker carrying 5000 litres of fresh water costs between ₹500 to ₹800.  Furthermore, an insignificant amount of ₹ 1,500 of savings in electricity, the cost used to pump water to the overhead tanks and ₹ 4,500 for use of chemicals, detergents, naphthalene balls, and consumables such as brushes, and mops.” Dr Murali says the cost of installing Vyuh is close to ₹ 4,299 per urinal. “For 10 urinals, it would be around ₹ 42,990. The same can be recovered within a year of installation,” he says.      Suchi Dr. Murali has many firsts in the field of hygiene.  He has also built “Suchi”, which is considered as world’s first self-cleaning urinal post, as it cleans urine splattered at the base.  “Urine tends to splatter at the base of a urinal. People inadvertently stamp on it and carry the filth everywhere. Suchi cleans this filth at the source thus preventing its spread and hence prevents odour,” he says.  According to Dr Murali, apart from saving water, installation of Suchi saves nearly 80 per cent on cleaning labour, thus allowing the owner to recover the costs within a year.  NoSmel Murali has also designed the world’s first female squatting-type waterless urinal named ‘NoSmel’. The toilet uses water only for cleaning and not flushing and its automation system also reduces the bacteria load within the premises.  This device uses a sophisticated timer to actuate the electrical appliances and also produces ozone that can be used for processing the urine. ‘Sangraha’ Dr. Murali is of the opinion that human urine is one of the most potent organic fertilizers available for agriculture. Considering this he has devised a technique to reclaim the nutrients from urine for agriculture with his invention named ‘Sangraha’. This device uses Ozone to reduce the bacteria load in urine and reduce odour while simultaneously converting it into a liquid fertilizer, (more information can be found at  The scientist estimates that on an average an “adult human produces up to $55 worth of nutrients in his urine in a year”. “We are wasting this precious resource and are heavily dependent on expensive chemical fertilizers,” he says.  The scientist – through his novel innovation – is contributing to the ‘Swacch Bharat’ initiative in his own way. The Central government’s ambitious project to end open defecation has many challenges with frequent droughts and demand for water. This could be effectively addressed with this water-less toilet technology.