December 8, 2021

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Can wetlands be the answer to the treatment of polluted water?

2 min read

Developing countries continue to fail to find lasting solutions to Waste Water, drinking water sources and adverse effects on human health.

The World Bank says Indonesia has a “serious problem of wastewater management,” where 95 percent of contaminated water enters rivers, agricultural fields and groundwater sources through spillage or dumping.

Lebanese researchers, a country on the east coast of the Mediterranean, say 92% of the raw water exported to the Mediterranean is unprocessed.

“Normal [wastewater treatment] systems, which are very expensive to install, which means that a large number of them are allowed to go to wetlands or undeveloped rivers,” they say.

Marco Rodríguez, a professor in the Department of Biology at Aarhu University, says the water treatment used is still very low.

According to Marco Rodríguez in South America and the Caribbean only 0.22 percent of the wastewater is processed compared to the amount of water sent to rivers and wetlands.

The well-built wetlands use natural methods to differentiate pollution from water from domestic, industrial, agricultural and livestock sources, and runoff, he said.

In this way people can do filtering water by means of normal filtration, using as stones or clay and aquatic plants or water-purifying microbes.

“Attempts to implement wastewater in a natural way require extraordinary work but also do not require significant technology,” says Rodriguez.

María Alejandra Maine, a graduate of the School of Architecture at the University of Argentina, says well-constructed wetlands should be used extensively in water filtration before they are spread to other areas.

While climate change is causing many areas to face water shortages. It requires the search for solutions to improve the already used ones.

Knowledge based on nature

Scientists have failed to find solutions based on the environment for the use and management of urban wastewater.

“There is still a low rate of wastewater treatment,” the World Bank said.

However, Christoph Platzer, an expert on wastewater treatment, says Nicaragua is the only country that uses large-scale wastewater treatment technology.

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