Understanding forest water cycles and the processes influencing them is critical for predicting how environmental changes may impact hydrology. Soil-Vegetation-Atmosphere Transfer (SVAT) models are essential tools simulating understanding fluxes within ecosystems. However, accuracy reliability of these often limited by quality availability input data, particularly soil hydraulic parameters. Consequently, assumptions made in modeling process can lead to underestimations or overestimations key...

Soil aquifer treatment (SAT) is a nature-inspired solution for improving the water quality through soil percolation. The biodegradation of organic matter typically occurs in shallowest layer and it depends on contaminant’s characteristics (water solubility, molecular structure) specific properties (pore size distribution). present study aims at identifying which grain fraction used sandy soils SAT systems can provide optimal conditions microbiological growth that be reached by trade-off...

Physical models such as surface infiltration experiments in the lab and field are an approach to understand processes unsaturated soil zone. In case of mapping influencing operation real-world managed aquifer recharge schemes they helpful tools determine interactions between zone, site-specific well operational parameters. However, multitude assumptions scale-related limitations downscale investigations often lead over- or underestimations, rendering their results useless when translated...

Trimethylbenzene (TMB) isomers (1,2,3-TMB, 1,2,4-TMB, and 1,3,5-TMB) are often used as conservative tracers in anaerobic, contaminated aquifers for assessing BTEX (benzene, toluene, ethylbenzene, xylenes) biodegradation at field sites. However, uncertainties exist about the behavior of these compounds under anaerobic conditions. For this reason, influence various parameters (temperature, residence time) on biodegradability TMB was investigated denitrifying sulfate-reducing conditions...

Decentralized water management requires innovative technical solutions due to restricted operational and economic resources. In this study, a combined, decentralized infiltration system in the form of closely-spaced sub-systems for precipitation treated wastewater has been numerically analyzed. Flow transport simulation shows that system, by arranging pipes closely longitudinal manner, is feasible under consideration German national guidelines both methods. Precipitation events up recurrence...

The closely-spaced infiltration of treated waste water and precipitation may have advantages when compared to the single infiltration, such as reduction construction costs space requirements. Recent numerical works showed theoretical applicability this approach. A physical tank experiment has been set-up study processes in more detail provide real data on flow well purification potential during infiltration. Various scenarios with without events technically realized. These then used...

As an alternative to the use of tracers, easy-to-measure soil moisture dynamic parameters (e.g., water content) provide in situ estimates infiltration rate reduction state a medium. For instance, managed aquifer recharge operations control hydraulic their basins by measuring infiltrated volume under constant head conditions. Instantaneous profile measurement systems can be used manage determining over time. This study combines empirical methods Libardi, self-developed content and root mean...

The water balance is one of the most important factors that regulate growth, yield and quality in trees. Seasonal variations soil availability also climate change play a key role status plants. Trees developed different physiological strategies order to cope with environmental stresses. These include functional relationship between availability, plant status, consumption, which means amount used for transpiration. In present study, we aimed investigate (1) relations tree deficit (TWD),...

Global and regional changes have significant financial, socio-economic environmental impact on water resources.This is manifested in severe depletion of groundwater levels, salinisation soils aquifers, increased pollution levels.In many cases though, this can be compensated through carefully designed adaptation measures.One such example represented by managed (artificial) aquifer recharge (MAR), method which implies the purposeful with surface for subsequent recovery or benefits.Over...

The decentralized treatment of wastewater and its on-site infiltration is common practice, especially in rural areas. However, uncertainties exist on the degradation potential treated constituents mixed with additional large quantities water originating from precipitation. intermixture these waters causing a reduction residence times as well an increased saturation within unsaturated soil zone. This can lead to negative influence purification efficiency. Laboratory-scale 1D column...

Infiltration experiments in the context of managed aquifer recharge (MAR) are often conducted to assess processes influencing operation full-scale MAR schemes. For this, physical models such as laboratory and, less often, field used determine process specifics or operational parameters. Due several assumptions, scale-related limitations, and differing boundary conditions, upscaling results from is not straightforward. Investigations lead over- underestimations flow that constrain translation...

Abstract Background Organic pollutants at contaminated sites are often eliminated naturally by biological degradation. The redox processes responsible can be enhanced infiltrating electron acceptors such as nitrate or sulfate into the aquifer. However, addition of oxidative agents lead to undesired side-effects in saturated soil zone consumption oxidation sulfides contained Laboratory-scale 1D column experiments up flow mode were performed evaluate potential and related kinetics during an...

Groundwater is the main source of all renewable water resources for drinking and irrigation in most arid semiarid areas.However, groundwater abstraction by pumping has increased areas significantly, leading to a lowering level.Managed aquifer recharge measure prevent or counteract these temporary permanent declines their negative effects.The work described here deals with numerical simulation treated wastewater infiltration improving local balance catchment area Sarden village, Syria.The...

The overall aim of the MEWAC-FEMAR project (Middle East Regional Water Research Cooperation Program – Feasibility Managed Aquifer Recharge), funded by German Federal Ministry Education and (BMBF), is to support enhance a safe sustainable water supply in Middle Recharge (MAR). One target region Syria, which facing insecurity regarding availability, supply, agricultural needs. In addition, severely affected war results extreme destruction infrastructure other resources. project's...