CHARACTERIZATION OF THE INTERSTITIAL SOLIDS IN CONSTRUCTED WETLANDS OF SUBSURFACE HORIZONTAL FLOW - DOI: 10.13083/1414-3984/reveng.v23n6p562-574

Authors

  • Gheila Corrêa Ferres Baptestini
  • Antonio Teixeira Matos
  • Paulo Roberto Cecon
  • Suymara Toledo Miranda

DOI:

https://doi.org/10.13083/reveng.v23i6.610

Keywords:

colmatação, entupimento de poros, tratamento de águas residuárias

Abstract

The objective of the present study was to evaluate the effect of reversing the direction of flow in constructed wetland of subsurface horizontal flow (CW-HSSF) in the qualitative and quantitative characteristics of the clogging material. For this, in the end of the experimental period, bed samples were collected from six CW-HSSF: two non-cultivated (CW-HSSF 1 and 4), two cultivated with tifton 85 grass (Cynodon spp.) (CW-HSSF 2 and 5) and two cultivated with alternathera (Alternanthera philoxeroides) (CW-HSSF 3 and 6). The interstitial solids were separated from the samples taken from the CW-HSSF porous media. In this material was quantified the mass of total solids (CST), total volatile solids (CSVT), and fixed total solids (CSFT) per volume (kg m-3) of CW-HSSF porous media. Each plant species influenced differently the distribution of CST, CSFT and CSVT in planted CW-HSSF. Even in conditions of CSVT/CST low relationship the organic fraction provided structure of the surface material support of CW-HSSF. On average, the reversal in the flow direction does not reduced the accumulation of organic matter in porous media. The high degree of clogging in CW-HSSF prevented or made less noticeable and prolonged the positive effects of reversing the direction of flow of wastewater on conditions of the porous media.

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Published

2016-03-17

How to Cite

Baptestini, G. C. F., Matos, A. T., Cecon, P. R., & Miranda, S. T. (2016). CHARACTERIZATION OF THE INTERSTITIAL SOLIDS IN CONSTRUCTED WETLANDS OF SUBSURFACE HORIZONTAL FLOW - DOI: 10.13083/1414-3984/reveng.v23n6p562-574. Engineering in Agriculture, 23(6), 562–574. https://doi.org/10.13083/reveng.v23i6.610

Issue

Section

Water and environmental resources

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