In this article, I would like to introduce some eco-friendly methods to purify wastes. There are some using reed, peat and brown coal, and water hyacinth.

First, method using reed as a purifying means was first developed and used in U.S. in 1960s. When planted in water mixed with sewage, it absorbs oxygen from air and brings it down through stem to the roots where some bacteria known to destroy the derelicts, or abandoned thing, propagate and naturally purify the dirty water. This method is proved to be effective in eliminating phenol elements in industrial waste, so it is being widely used.

Second, there is another one using peat/brown coal. The soil particles in peat constantly react with the pollutants in the water and absorb the derelict. It is already being operated in many regions.

Third, there are some thankful plants that have excellent talents in purifying water.  Of all, water hyacinth is originally from tropic and subtropics of America. They mostly live wandering around in a pond. They are famous for their great work in Haiti earthquake rescue project. They are being used in purifying wastes there by Korean people. It absorbs the impurities in the water from community kitchens and shower rooms and by the time water reaches the river, it is clean enough.

Purifying used water is very important in industrialized regions, but the method to do so is also important. Rather than using chemicals, utilizing the above mentioned ways would be more environment-friendly. I hope that these natural means do not get underestimated and widely accepted and used in as many regions as possible.