Quali-quantitative characterization of organic matter in urbanized drainage basins as a basis for the application of Water Resources Management Instruments

Leithold, Juliana; Fernandes, Cristóvão Vicente Scapulatempo; Knapik, Heloíse Garcia; Azevedo, Júlio César Rodrigues de

doi:10.1590/2318-0331.021720160065

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…Another study conducted in the state of Paraná, in Pitangui river, also related lower dissolved oxygen values to the influence of domestic sewage and agricultural areas [44]. This relationship was also identified in the Iguaçu river in the metropolitan region of Curitiba, Paraná, in a section with higher population density, where high deposition of unstable organic matter originated from wastewater probably caused consequent DO depletion and water quality degradation [45].…”

Section: International Journal Of Advanced Engineering Research and Science (Ijaers)mentioning

confidence: 75%

Spatio-temporal study of water quality in a subtropical reservoir and related water bodies in Southern Brazil

Lopes¹,

Arruda²,

Neto³

et al. 2018

IJAERS

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The importance of hydroelectricity to the world energy grid motivates the implementation of dams and formation of reservoirs. This implies changes in the ecosystem, and therefore those waters must be constantly monitored. Given the relevance of applied scientific research to monitoring data, this study aims at the spatiotemporal characterization of the water quality of Capivari-Cachoeira hydroelectric power plant reservoir located in Southern Brazil, as well as the water supplying it and the water that is restored to the river. Historical monitoring data obtained between 2005 and 2016 were used for the analysis. The factor analysis used for the study of these data resulted in two factors that explain 59.7% of the total variability. The first factor represents the influence of anthropic activities and land use, signaling the existence of polluting sources upstream of the reservoir. The second fator represents seasonality. Kruskal-Wallis tests applied in factor scores and in the variables with higher factor weights resulted in significant spatial and temporal difference. Regarding the first factor, the reservoir station and those located downstream differed spatially from those located upstream. In the reservoir, reduction in concentration of phosphorus and total solids suggests sedimentation, consequently reducing its values downstream. Considering the seasonal factor, the results obtained during winter showed the lowest temperatures and had the highest values of dissolved oxygen, with the exception of the samples from the reservoir. Thus, the control of the nutrient supply in dammed river demonstrated to be an important tool for managing water resources.

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Section: International Journal Of Advanced Engineering Research and Science (Ijaers)mentioning

confidence: 75%

Spatio-temporal study of water quality in a subtropical reservoir and related water bodies in Southern Brazil

Lopes¹,

Arruda²,

Neto³

et al. 2018

IJAERS

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Adaptive monitoring approach to assess dissolved organic matter dynamics during rainfall events

Kozak

Leithold

Prado

et al. 2021

Environ Monit Assess

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Robust calculus for biotransformation in wastewater generalised across thousands of chemicals and conditions

Nolte,

Peijnenburg,

van Vlaardingen

2023

Environ. Chem.

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Environmental context Decades of research tried to understand the inherent complexity of biodegradation of contaminants. We describe calculus of biodegradation driven by bioavailability, redox, geometry and acclimation (adaptation) of microbiota. We tested predictions for thousands of contaminants across wastewater treatment plants, explaining up to 70% of the variance in observations. This competes with more intensive methods, and enables more efficient monitoring, experimentation and data interpretation. Rationale Release of harmful contaminants of emerging concern (CECs) in the environment prompts possible adverse toxicological effects. Increasing population, water use and process wastewater generation require more efficient removal of contaminants that allows for effluent discharge within environmental regulatory limits. Wastewater treatment plants (WWTPs) can remove hazardous contaminants, limiting unwanted release. Fine-tuning WWTP settings to fit the location, time, season, wastewater type, etc. may enhance removals to reduce CEC concentrations and toxic pressures. Methodology For this purpose, we need robust tools to calculate removal efficiencies. We studied influences of operational settings and CEC properties on their removal in WWTPs. For this purpose, we parameterised thermochemical properties of CECs: for their (1) speciation and acidification, (2) (re/im)mobilisation due to (de)sorption into solid/water, (3) redox-mediated biotransformation and (4) acclimation of biomass so to utilise metabolic pathways for biotransformation. By combining these parameters, we developed an energy-based framework for calculating biotransformation rates. Results We evaluated our calculus using removal efficiency (%) data for 373 measurements of 60 CECs in 14 different Dutch WWTPs and an additional 667 CECs in 49 WWTPs across the world. Our prediction precision, R2 ≈ 0.65 (P < 10−5), captures influences of wastewater characteristics (multiple measurements for each WWTP). It is higher than R2-values of modelling approaches currently available. Our model explains CEC removal with appreciative certainty. We identified outliers during evaluation. These outliers were attributed mostly to back-transformation and uncertainty in long-term background concentrations of contaminants, causing consequent acclimation of microbial consortia. Discussion Biodegradability and CEC-degrading biomass can be estimated from concentration and environmental residence time. Our framework and underlying parametrisations have a mechanistic basis, utilising simple WWTP operational information (CEC concentration, temperature, suspended solids concentration, oxygen demand, etc.). Thereby, our work has wide potential for implementation. Our approach can supplement current fate assessment for CECs for improved environmental risk assessments. We conclude by discussing the potential for removal enhancement.

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Quali-quantitative characterization of organic matter in urbanized drainage basins as a basis for the application of Water Resources Management Instruments

Cited by 3 publications

References 26 publications

Spatio-temporal study of water quality in a subtropical reservoir and related water bodies in Southern Brazil

Spatio-temporal study of water quality in a subtropical reservoir and related water bodies in Southern Brazil

Adaptive monitoring approach to assess dissolved organic matter dynamics during rainfall events

Robust calculus for biotransformation in wastewater generalised across thousands of chemicals and conditions

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