Wickford Junction sits atop a gravel aquifer recharge zone. A Walden SBR system was chosen to treat the wastewater flow from a proposed shopping center in order to remove contaminants prior to discharge to a disposal field. The shopping center was to be built in phases and the developer wanted the flexibility to incrementally add treatment capacity as additional store fronts were added. Walden’s PLC program allowed for future expansion simply by adding the equipment and turning it on at the operator interface terminal.
Andrea Croskrey, PG, of the Texas Water Development Board will give the keynote presentation at the NGWA Conference on Hydrogeophysics and Deep Groundwater, March 20-21 in Denver, Colorado. Focusing on the use of geophysics—from remote sensing to borehole applications—for groundwater studies, the conference also includes a follow-up to the 2014 NGWA Conference on Characterization of Deep Groundwater.
Below Croskrey gives a preview of her presentation as well as what she is looking forward to learning...
The assessment of groundwater vulnerability to pollution has proved to be a useful tool to delimitate zones affected by groundwater contamination. For this reason, development of groundwater vulnerability maps became a useful tool for protecting groundwater resources from pollution. The Smar aquifer belongs to maritime Djeffara (southeastern Tunisia); it is essentially occupied by agricultural areas characterized by an intensive use of chemical fertilizers. The vulnerability mapping was performed by using (i)...
Increasing water demands in light of limited water resources have intensified exploitation and drawdown of groundwater. On the other hand, rising water demand has accelerated wastewater production. Therefore, urban wastewater management via artificial recharge may play a significant role in aquifer management. While site selection for artificial recharge projects is a major challenge, fuzzy logic provides one of the most viable approaches for this purpose. Considering the high volume of wastewater production in...
Environmental risk assessment is a step towards identification, analysis, and classification of risk factors and thus reduction of the possibility of adverse consequences. In this research, a novel approach for environmental risk assessment on groundwater pollution is applied. By combination of aquifer vulnerability DRASTIC map, pollution severity and prioritizing of the plain regions by the TOPSIS method, more sensitive regions of Qazvin aquifer in Iran are identified. In the first step, seven hydro-geological...
In this study, we collected 22 groundwater samples and supporting measurements from different coal-mining districts in the Huaibei coalfield to examine the age, hydro-chemical characteristics, and evolution of groundwater in the Ordovician limestone aquifer (OA). We determined the groundwater concentrations of major ions, stable isotopes (hydrogen and oxygen) and a radio isotope (14C). All the samples were alkaline in nature, and had pH values between 7.10 and 10.80. The total dissolved solids (TDS) contents...
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