Koh Tao has gained exponential popularity over the last five years, however still suffers the primitive waste water system that cannot sustain the current demand. For the last 4 years, companies have been building over the evidence, the grey water stream that runs through Sairee Beach. Big Blue has not covered it up, in an attempt that some day we may be able to improve the water quality that current expels directly into Sairee Bay.
Enter Big Blue Conservation!
Constructed wetlands uses reeds and other wetland plants to filter and recycle waste water through their roots. A constructed wetland consists of a gravel bed on which suitable wetland plants are grown. As water passes through the substrate, it is purified through the activity of bacteria attached to the gravel, plant roots, soil and other particles. The many natural processes operating within constructed wetland ecosystems are dynamic, robust, and offer superior wastewater treatment that is difficult to reproduce mechanically or chemically. The systems can withstand shock loadings and volume changes while maintaining a consistent discharge quality clean enough to be released straight into the oceaan, as the Poonama canal does. There is a growing body of research characterizing the ability of wetland plants to neutralize complex organic compounds including pharmaceuticals and pesticides, thus making it safer for bathers and recycling. They are long lasting, low maintenance and naturally regenerative. As natural habitats for many butterflies and plants, the wetland would provide an attractive entrance to Big Blue, therefore providing aesthetic, commercial and habitat value.
Its cheap and easy to build, and part of becoming an SSI Eco Dive centre requires us to manage our waste water as best we can. By investing in a constructed wetland system, you can truly claim to be a responsible steward of the environment, bringing human activity more closely into balance with nature. You can reduce your impact on municipal infrastructure, help conserve waste water with the potential for reuse, and help to provide wildlife habitat, all while treating wastewater to high standards for release into the ocean.
So watch this space - there going to be a beautiful wetlaand awaiting you next time you come to Big Blue!