Sistema para verificação da qualidade de afluentes de sistemas de tratamento de águas residuárias.

Abstract

The development of a toxiineter, iustrument for detecting toxic elements in wastewater treatment systems hifluent, is preseuted. The presence of these toxic elements is prejudicial to wastewater treatment systems and must be detected before the feeding of the influent into the biological reactor. This can be achieved through monitoring the bactéria metabolic activity in a reduced scale biologic reactor, which is fed with a fraction of the wastewater treatment influent. The bactéria activity can be monitored by the measurement (estimation) of its oxygen uptake rate or respiration rate. Results of simulation and experiments with the prototype using a classical method and two proposed ones for estimating the oxygen uptake rate are presented. The methods are compared with each other and its application characteristics are evidenced. Tlie parts of the toximeter are also presented.