%0 Journal Article
%T Aplica  o de lodos de esta  es de tratamento de ¨¢gua e de tratamento de esgoto em solo degradado Application of sludges from water treatment plant and from sewage treatment plant in degraded soil
%A Simone Bittencourt
%A Beatriz Monte Serrat
%A Miguel Mansur Aisse
%A Lia M¨¢rcia Kugeratski de Souza Marin
%J Engenharia Sanitaria e Ambiental
%D 2012
%I Brazilian Association of Sanitary and Environmental Engineering
%X O objetivo deste estudo foi avaliar o efeito da aplica  o de lodo de Esta  o de Tratamento de ¨¢gua (ETA) em solo degradado, com presen a e aus¨ºncia de lodo de Esta  o de Tratamento de Esgoto (ETE), na produtividade do milheto e nas caracter¨ªsticas de fertilidade desse solo. A ¨¢rea experimental foi resultante de dep¨®sito de materiais oriundos da constru  o da ETE Padilha Sul, em Curitiba (PR). Os blocos casualizados foram arranjados em parcelas subdivididas e uma testemunha, sendo a parcela principal constitu¨ªda por aus¨ºncia e presen a de lodo de ETE (77 Mg.ha-1 S¨®lidos Totais - ST) e a subparcela por doses de lodo de ETA (24, 37 e 61 Mg.ha-1 (ST)). Concluiu-se que a aplica  o de lodo de ETA n o teve efeito sobre a produtividade de milheto, tampouco sobre os teores dos elementos avaliados no solo. No entanto, na presen a do lodo de esgoto, a sua aplica  o foi favor¨¢vel ¨¤ dinamica do nitrog¨ºnio do solo at¨¦ ¨¤ dose de 37 Mg.ha-1 e a aplica  o do lodo de ETE neutralizou o alum¨ªnio troc¨¢vel, elevou o pH, o c¨¢lcio, carbono, f¨®sforo e a satura  o de bases, e reduziu a acidez potencial do solo. The objective of this study was to evaluate the effect of Sludge Water Treatment Plant (WTP) in degraded soil in the presence and absence of sludge Sewage Treatment Plant (STP), in the millet productivity and in the soil fertility characteristics. The experimental area was due to materials deposit from the construction of ETE Padilha Sul, in Curitiba, Paran¨¢, Brazil. The randomized blocks were arranged in split plots and a witness, being the main plot, constituted by the absence and presence of STP sludge (77 Mg.ha-1 Total Solids - TS) and subplot by doses of WTS (24, 37 and 61 Mg.ha-1 TS). It was concluded that the application of WTS had no effect on the productivity of millet, nor about the proportion of elements evaluated in the soil. However, in the presence of sewage sludge, its application was favorable to the dynamic of nitrogen until the dose 37 Mg.ha-1 and the application of sludge STP neutralized the exchangeable aluminum, increased the pH, calcium, carbon, phosphorus and base saturation, and reduced the potential soil acidity.
%K destina  o final
%K ¨¢rea degradada
%K lodo de esgoto
%K aplica  o de lodos
%K disposal
%K degraded area
%K sewage sludge
%K mud application
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-41522012000300008