Eficiência da estação de tratamento de efluente de uma empresa de bebidas não alcoólicas na região metropolitana de João Pessoa/PB

Abstract

The treatment of wastewater is substantial for human health and the environment. In addition to domestic sewage, industrial effluents are generally of concern as to their treatment and their disposal in bodies of water. Thus, it is extremely important to have a control and monitoring of the treatment plant through the quality parameters. The purpose of study was to analyze the efficiency of the effluent treatment plant by activated sludge system of a non-alcoholic beverage company located in the metropolitan region of Joao Pessoa. During the period from January 2015 to April 2017, the research verified the effluent input and output characteristics, biodegradability, the pollutant potential in organic load by the population equivalent, as well as the behavior analysis of the aerobic reactor. Based on the results, it was concluded that the system proved to be very efficient in removing the BOD and COD from the effluent, although the biodegradability test verified that the wastes should initially receive a physical-chemical treatment. The verification of the parameter of potential polluter of the company, through the population equivalent, the industry presented an average of 90,000 people in relation to BOD in terms of concentration. But at the end of the treatment applied in the company there was a decrease in this quantity for an average of 120 inhabitants. It also verified that the oxygen requirements dissolved during the studied period, showed above the necessary limit, however, the nitrogen and total phosphorus, in some months presented values below the reference value.