Green Hotels Association
    February 2015  


How to Clean a River?

A group of creative people in the Philippines found an unlikely solution to clean the Pasig River. They put up a floating billboard. It is made of Vetiver (Chrysopogon zizanioides), a perennial, non-invasive grass often used to treat wastewater and stabilize landfills and garbage dumpsites. The plant can tolerate high levels of nitrates, phosphates and heavy metals, absorb toxic materials and help reduce pollution even in water as dirty as the Pasig River's. The message of the billboard spells hope: CLEAN RIVER SOON. It is also a warning for people to think twice before throwing rubbish into the water. Based on research, a Vetiver system like this can clean 2 to 8 thousand gallons of water per day.

The floating billboard mounted in February 2014 through the combined efforts of Shokubutsu Hana, The Pasig River Rehabilitation Commission, Vetiver Farms Philippines and TBWA\SMP.

Personal care brands create products that cleanse the body. Little do consumers know that a lot of these products are made from chemicals that might harm them. Shokubutsu Hana, a personal care brand from the Japanese company Lion, believes in healthy beauty brought about by the restorative power of nature.

Hana sought to communicate their message in a medium that speaks best to its consumers. But seeing that there are no available channels that fully translates HANA�s message, the brand created its own. The billboard was made to float on water, but the billboard didn�t just communicate HANA�s message�it actually cleaned wastewater in the river where the billboard was placed.

vetiver.org/g/contaminated-water.htm, http://vetivernetinternational.
blogspot.com/2010/03/, waste-water-clean-up-in-calfornia-using.html

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