Now showing items 1-10 of 12
The effects of seasonal change, impoundment, and stratification on trihalomethane precursors
(Virginia Tech, 1990-04-05)
<p>The major objectives of this study were to investigate the effects of seasonal changes in Lake Manassas and its watershed (late winter to late summer), the impoundment of Broad Run, and the stratification of Lake Manassas ...
Greenhouse and laboratory study for the land application of water treatment residual
(Virginia Tech, 1991-06-05)
The disposal of water treatment residual has received little attention due to a lack of regulation, funding, and concern about their environmental impacts. Many treatment plants discharge alum residual directly into nearby ...
Chlorine dioxide and by-products in water distribution systems
(Virginia Tech, 1991-12-04)
<p>Chlorine dioxide is used as both a pre-oxidant and/or a post-disinfectant in several water treatment plants in the United States. Chlorine dioxide is associated with its byproducts chlorite and chlorate. Chlorine dioxide, ...
Removal of soluble iron and manganese from groundwater by chemical oxidation and oxide-coated multi-media filtration
(Virginia Tech, 1990-08-05)
Adsorption kinetics for the removal of soluble manganese by oxide- coated filter media
(Virginia Tech, 1988-12-05)
This study was conducted to examine the kinetics of manganese sorption on oxide-coated filter media. Initial experimentation confirmed the findings of other investigators, the Mn2+ sorption capacity of oxide-coated ...
Evaluation of activated carbon processes for removing trihalomethane precursors from a surface water impoundment
(Virginia Tech, 1987-06-05)
<p>A pilot plant study was conducted in Newport News, Virginia to investigate the effectiveness of powdered activated carbon [PAC] and granular activated carbon [GAC], with and without preoxidation, for reducing ...
The removal of pesticides and heavy metals by reverse osmosis
(Virginia Tech, 1990-03-10)
The effect of three holding tank chemicals on anaerobic wastewater treatment
(Virginia Tech, 1988-07-05)
Sewage-holding tanks aboard recreational boats store human wastes, thereby preventing the direct discharge of wastewater to the aquatic environment. Water-conserving toilets and limited holding tank volumes produce a highly ...