Influência dos diferentes tipos de dosagens de condicionante químico no desaguamento de lodo de eta em tubos geotêxteis

Abstract

Among the technologies available to dewater the waste generated in the water treatment (RETA), the filtration in a geotextile tube combined with the use of polymers has become a very viable option, being used in several ETAs in Brazil. However, there are many uncertainties about the project parameters that should be adopted and about which combination of geotextile x chemical conditioner that optimizes the dewatering of these residues. Thus, that work, through bench tests in geotextile filter, sought to answer questions regarding the influence of polymer dosages on dewatering in geotextiles, where 6 (six) types

of polymers were tested through 3 (three) distinct dosages in a sludge with the same physical- chemical characteristics. The results of the bench tests showed that the use of polymers to aid

the dewatering of sludge in the geotextile was efficient, reducing turbidity values in the samples. The polymer that showed the best result in the dewatering process was Non-Ionic.