Pioneering research efforts in the handling of municipal sewage in developing countries have involved the use of water hyacinth (Eichhomea crassipes) to purify sewage for possible re-use of the effluent water for domestic purposes. The ability of water hyacinth to remove pollution from raw sewage has been found to be impaired by sewage toxicity. Trials were therefore carried out to adapt water hyacinth to toxicity and thereby increase its .ability to remove pollutants from raw sewage. The plants were adapted …
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