The principal objective of our study was to optimise a municipal activated sludge wastewater treatment plant (WWTP) to face high organic flows due to viticulture effluents inputs. Treatment file optimization consisted in testing different treatment lines, changing the number and volume of biological basins and clarifiers, with or without a buffer basin upstream, with a view to achieving a bette...

In Portugal, many wastewater treatment plants are presently operated according to predetermined schemes, with few concerns to variations of the activated sludge process and without optimizing its performance to achieve a better effluent quality. Little attention has been given to the activated sludge models as powerful tools for wastewater treatment process understanding, design, control and op...

In this paper, an observer-based fault detection and isolation (FDI) method for a biological wastewater treatment process (WWTP) is presented. The residual is generated utilizing an Extended Luenberger function observer. The FDI of a set of sensors faults is done by using a bank of Luenberger observers. The implementation of the proposed approach and the results obtained from its application to...

Giardia duodenalis is a protozoan of public health interest that causes gastroenteritis in humans and other animals. In the city of Campinas in southeast Brazil, giardiasis is endemic, and this pathogen is detected at high concentrations in wastewater effluents, which are potential reservoirs for transmission. The Samambaia wastewater treatment plant (WWTP) in the city of Campinas employs an ac...

Biodegradation of 17beta-estradiol (E2), estrone (E1), and testosterone (T) was investigated in three wastewater treatment plant (WWTP) affected streams in the United States. Relative differences in the mineralization of [4-(14)C] substrates were assessed in oxic microcosms containing saturated sediment or water-only from locations upstream and downstream of the WWTP outfall in each system. Ups...

In this paper, a combination between a nonlinear continuous time dynamical model and discrete time output measurements has been investigated for estimating the unknown states. Assuming some persistent excitation conditions and the sampling steps to satisfy some boundedness hypotheses, system observability is ensured and consequently, guarantees the convergence of the continuous-discrete time ob...

the trend of sustainable use of available water resources encourages textile finishing enterprisesto implement efficient wastewater treatment technologies that enable water recycling, and not just it’sdischarging into the local wastewater treatment plants (wwtp). this paper presents the results obtainedfrom the h2o2/uv treatment of wastewater from slovene textile finishing company. laboratory s...

Complete biodegradation of a newly-synthesized chemical in a wastewater treatment plant (WWTP) eliminates the potential for novel environmental pollutants. However, differences within- and between-WWTP microbial communities may alter expectations for biodegradation. WWTP communities can also serve as a source of unique consortia that, when enriched, can metabolize chemicals that tend to resist ...

Five estrogenic hormones (unconjugated + conjugated fractions) and 10 beta blockers were analyzed in three wastewater treatment plant (WWTP) effluents and receiving river waters in the area of Lyon, France. In the different samples, only two estrogens were quantified: estrone and estriol. Some beta blockers, such as atenolol, acebutolol, and sotalol, were almost always quantified, but others, e...

Treated effluents from wastewater treatment plants (WWTP) are a significant source of anthropogenic contaminants, such as pharmaceuticals, in the aquatic environment. Although our understanding of how wastewater effluent impacts fish reproduction is growing, we know very little about how effluent affects non-reproductive physiology and behaviours associated with fitness (such as aggression and ...