Botany - Environmental Issues Question with Solution | TestHub
In Arcata marshes, cleaning of wastewater involves:
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Answer:
Solution:
Town Arcata is situated along the northern coast of California. Along with Humboldt State University, the towns people created an integrated waste water treatement process within a natural system. The cleaning occurs in two stages -
(i) The conventional sedimentation, filtering and chlorine treatements are given. After this stage, lost of dangerous pollutants like dissolved heavy metals still remains. To combat this, an innovative approach was taken and
(ii) The biologists developed a series of six connected marshes over 60 hectares of marshland. Appropriate plants, algae, fungi and bacteria were seeded into this area, which neutralise, absorb and assimilate the pollutants. Hence, as the water flows through the marshes, it gets purified naturally.
