Caracterização dos lodos de decantador e água de lavagem de filtros gerados na estação de tratamento de água presidente Castello Branco

Abstract

Water production is essential for human consumption, but for the process it is raw water must undergo physical-chemical treatment. This process of The treatment consists of removing impurities (physical, chemical and biological) by means of specific technologies, but as it treats the water, it generates waste (sludge), which can not be launched in an in natura way in the environment, as it can negatively impact it. This work has the objective of characterizing the sludge generated at the Water Treatment (ETA) President Castello Branco, identify the possible environmental impacts caused by the current disposal practice and propose improvements in the management of this waste and also in the water treatment process. ETA is of the type and is located on the banks of BR 232 in the district of Curado in Jaboatão dos Guararapes, supplies the Metropolitan Region of Recife (RMR), covering the Camaragibe, part of the city of Recife and part of the municipality of Jaboatão dos Guararapes. The main effluent generated in the ETA consists of the sludge generated in the decantation and filtration. For washing decanters and filters, analysis of physical-chemical parameters and standard parameters established by Resolution 430/2011 and other work similar. It has been found that the filter washing sludge has completely different from the decanter sludge, since only the color parameter, exceeded the required parameters. As for the sediment discharge sludge conventional method was the one that exceeded the values, exceeding the required by Resolution 430/2011 of CONAMA, with the exception of the parameter pH, therefore the sludge can not be released without pretreatment, so as not to degrade the environment. It is imperative that, given the arguments put forward, there should be more research on the topic, to try to find positive alternatives to improve the water treatment process and the proper disposal of the sludge generated, with a view to that there are a range of options for the destination of the same. One can also carry out more specific physical-chemical analyzes to assess socioeconomic viability and environmental aspects of the use and disposal of this waste.