what are constructed wetlands?

Constructed wetlands can be used for primary, secondary and tertiary treatment of municipal or domestic wastewaters, stormwater, agricultural, animal and industrial wastewaters such as landfill leachate, petrochemicals, food wastes, pulp and paper and mining, usually combined with an adequate pre-treatment (Kadlec et al., 2000)

Here a scheme about how they work:

what are treatment wetlands?

The water quality improvements in natural wetlands
had been observed by scientists and engineers for
many years and this led to the development of
constructed treatment wetlands as an attempt to replicate the
water quality and the habitat benefits of the natural
wetland in a constructed ecosystem with the target of water purification before discharge (EPA 2000).

other names for the same solution

Treatment wetlands are also known as:

constructed wetlands, humedales artificiales, jardines depuradores de aguas residuales, wastewater gardens (TM), jardin d'epuration des eaux usees, zones humides artificielles, fitodepurazione, fitoépuration, kořenové čistírny, vegetačné koreňové čistiarne.

Different names for the same treatment results ... the use of right plants to clean up wastewaters

(please update this list with the name in your language)