Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8965101 | Journal of Environmental Chemical Engineering | 2018 | 24 Pages |
Abstract
A constructed floating wetland using macrophytes Typha domingensis Pers. was applied to the treatment of raw sewage in a municipal sewage treatment plant in south Brazil. During 12 months, the average removal of organic matter was evaluated by chemical oxygen demand (COD), 5-day biochemical oxygen demand (BOD5) and by total suspended solids (TSS) analysis and a removal efficiency of 55, 56 and 78% was, respectively, obtained. For nutrients, total Kjeldahl nitrogen (TKN) was reduced in 41% and total phosphorus, in 37%. The floating mats supported satisfactorily the macrophytes. This floating arrangement was applied as a single step on the sewage treatment. It is an effective alternative in Brazilian sewage treatment systems, where wetlands are normally used as a polishing step. The evaluation of parameters in the treatment system may give useful information in order to improve the removal efficiency and increase the quality of the water bodies.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Tatiane Benvenuti, Fernando Hamerski, Alexandre Giacobbo, Andréa M. Bernardes, Jane Zoppas-Ferreira, Marco A.S. Rodrigues,