Geochemistry of the final disposal of the water treatment residuals on degraded area

Química Nova

Boaventura, Geraldo Resende¹  Momesso, Alessandra Morales¹  Guimarães, Edi Mendes¹  Instituto de Geociências, Brasília, Brasil¹  Moreira, Ricardo Cosme Arraes¹  Companhia de Saneamento Ambiental do Distrito Federal, Brasília, Brasil¹  Lima, Gilmar Lopes de¹ 

关键词: sludge from water treatment plant;    degraded areas;    environmental geochemistry.;   

DOI  :  10.1590/S0100-40422009000800019

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This survey determined the physical and chemical properties of the gravel place where urban sludge from Rio Descoberto's Water Treatment Plant is disposed. Physical, chemical and biological analysis of the soil samples (n=54), sludge samples (n=2), chemical coagulant (n=20) and samples from superficial waters (n=9) and water table (n=60) were performed. As results we can emphasize the horizontal distribution of mineral phases like gibbsite, organic material, exchanged Ca, available Mn and P on the soils are originated from the sludge. Some of these mobile elements could stimulate the growing of the vegetation, but they also could contaminate the water table.

【 授权许可】

Unknown