Summary
Duckweed is a natural alternative to conventional treatment systems for managing increasing waste streams from human communities and industries. Duckweed is known in Thailand as khai-nam or 'poor man's food,' and this tiny floating water weed provides an abundant supply of protein and nutrition to Thai families for generations. Duckweed breaks down and converts certain types of waste to nutrient-rich biomass resulting in clean water. The weed can withstand temperatures ranging from 7-34 degrees Celsius and can grow from a thumbsized planting into a hectare in just 55 days.
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Extract
Duckweed: cleaning water at the grassroots.
As waste streams from human communities and industries continue to swell, many environmental scientists foresee a time when conventional treatment systems will be simply unable to handle them. These high-tech systems rely on thousands of miles of sewage collection pipes and channels, emergency outlets, huge waste processing tanks, turbine engines, and chemical monitoring systems, as well as a continuous supply of energy to operate each facility at rates of millions of gallons of wastewater per day.
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