Evapotranspiração da Typha SP em leitos cultivados.

Abstract

Urban, industrial, as well as rural sewage, together with the intensive agricultural activities have contributed to significant increment of organic compounds presence in the environment degradation. This statement reinforces the necessity of developing new technologies applied to water use and administration. The objective of this research work was to monitoring vertical flow wetland systems (VFWS) having a gravel bed with a macrophita Typha sp supported for domestic sewage treatment, discarded at the Faculty of Agricultural Engineering at UNICAMP. Flux was recorded at each hour, from 9:00 AM to 18:00 PM from 02/01/06 to 02/23/06. VFWS method exhibited 2.5m3, 0.55m depth, 4.66 m2 of área and a population of 240 plants. Evapotranspiration data from the VFWS was obtained from flux recording. These dates have been correlated to average defict of pressure of satured vapor (DPSV) data. Obtained data allows concluding that metheorologic factors and mainly the DPSV factor directly affect the evapotranspiration which induces the sewage nutrient withdraw.