In this paper the development of a quasi-three-dimensional numerical model that can be used for quantifying groundwater inputs and associated contaminant discharged from coastal aquifers into the coastal zone at a regional scale is presented. The present model is called MODSharp. In order to handle problems at a regional scale, the sharp interface approach which is used for conceptualising seaw...

50 m3 of legacy liquid radioactive waste at the Saakadze site in Georgia was treated using a modular type facility with apparatuses encased three metallic 200 L drums as purification method sorption/ion exchange technology. The main contaminant water underground tank long-lived radionuclide 226Ra. casing processing equipment enabled an effective conditioning all secondary end treatment campaign...

Our long-term goal is to determine if submarine groundwater discharge (SGWD) is an important mechanism for delivering contaminants (i.e. heavy metals, organics) to harbors. We plan to accomplish this goal using a suite of naturally-occurring radium isotopes as tracers of SGWD and the dispersion of contaminants from the embayment (Buesseler/WHOI). In addition, we plan to develop a comprehensive ...

For sudden drinking water pollution event, reasonable opening or closing valves and hydrants in a distribution network (WDN), which ensures the isolation discharge of contaminant as soon possible, is considered an effective emergency measure. In this paper, we propose scheduling algorithm based on evolutionary reinforcement learning (ERL), can train good policy by combination computation (EC) (...

Regional surveys of groundwater quality in Central Canterbury, from 1977 to the present, show widespread occurrence of nitrate contamination primarily from agricultural land use. Two reported analyses of these surveys, in 1984 and 2002, describe a general decrease of nitrate concentration with depth from the groundwater table to uncontaminated water at about 50-80 m. This high quality water is ...

the sources of groundwater pollution such as, industrial effluents, sewage and extensive farming have lead to agrochemical pollution. mathematical modeling helps to analyze the existing situation, allows forecasting, and to evaluate the effects of changes in the surrounding water quality. the present research has been focused mainly towards understanding the various processes affecting the tran...

A watershed's water quality is influenced by contaminant-transport pathways unique to each landscape. Accurate information on contaminant-pathways could provide a basis for mitigation through well-targeted approaches. This study determined dynamics of nitrate-N, total P, Escherichia coli, and sediment during a runoff event in Tipton Creek, Iowa. The watershed, under crop and livestock productio...

This research evaluated the wastewater treatment system of Punta Carnero sector, in relation to pollutant efficiency load removal, final effluent quality and impact on ecosystem, finally determine if discharge can be reused for agricultural irrigation. The was based affluent characterization system, carried out three phases: i) Taking simple samples, analyzed an accredited water laboratory anal...