Impact of hydraulic loading rate and media type on removal of ...
Impact of hydraulic loading rate and media type on removal of bulk organic matter and nitrogen from primary effluent in a laboratory-scale soil aquifer treatment system
The effect of hydraulic loading rate (HLR) and media type on the removal of bulk organic matter and nitrogen from primary effluent during soil aquifer treatment was investigated by conducting laboratory-scale soil column studies. Two soil columns packed with silica sand were operated at HLRs of 0.625 and 1.25 m/d, while a third column was packed with dune filtering material and operated at HLR of 1.25 m/d. Bulk organic matter was effectively removed by 47.5 ± 1.2% and 45.1 ± 1.2% in silica sand columns operated at 0.625 and 1.25 m/d, respectively and 57.3 ± 7.6% in dune filtering material column operated at 1.25 m/d. Ammonium-nitrogen reduction of 74.5 ± 18.0% was achieved at 0.625 m/d compared to 39.1 ± 4.3% at 1.25 m/d in silica sand columns, whereas 49.2 ± 5.2% ammonium-nitrogen reduction was attained at 1.25 m/d in the dune filtering material column. Ammonium-nitrogen reduction in the first 3 m was assumed to be dominated by nitrification process evidenced by corresponding increase in nitrate. Part of the ammonium-nitrogen was adsorbed onto the media, which was observed at higher rates between 3 and 5 m in silica sand column operated at HLR of 0.625 m/d and dune filtering material column operated at 1.25 m/d compared to 1.25 m/d silica.
The Stevens HydraProbe is now being used to monitor the progress of a new groundwater pollution clean up method called phytoremediation. Phytoremediation is the method by which trees are used to pull contamination out of groundwater. Remediation of contaminated aquifers can take many years to complete. The need for clean, healthy rivers, lakes and streams has stimulated research to develop more efficient, cost-effective solutions of removing pollution from aquifers. Phytoremediation is one solution showing great...
Overview:Unable to regularly access remote monitoring sites, a Midwest engineering firm turns to cloud-based data management with outstanding results.
Challenge:C&E firms often find it difficult to balance the time and cost to monitor remote sites with the need to capture changes as they happen and help their clients avoid millions of dollars in remediation and extended costs.As Senior Technology Manager for Foth Infrastructure & Environment, Brian Symons is often called on to monitor changes in...
A former dry-cleaning site in the Pacific Northwest Ultra Custom Care Cleaners, was found to be contaminated with PCE (perchloroethylene). According to the U.S. Geological Survey (USGS), PCE was widely used in the dry cleaning of fabrics since the 1940s. PCE is one of the most frequently detected VOCs (volatile organic carbons) in groundwater at a national scale (Moran 2004). PCE is highly mobile, dense, and largely immiscible in water, causing it to sink below the water table, and making deanup extremely challengi...
Desalinating brackish groundwater eased water shortage in Cyprus city
Fluence addressed an increasingly severe water shortage in the city of Limassol in Cyprus by building a containerized brackish water reverse osmosis desalination plant that produces 10,000 L/d of high-quality purified drinking water, which complies with all requirements of WHO drinking water regulations.
Background
The city of Limassol in Cyprus was experiencing an increasingly severe water shortage, with regular cuts in water service....
Depleted groundwater can cause drier conditions that lead to more severe wildfires.
Researchers find that low water can dry ecosystems, leading to conditions that encourage fires to spread
A connection between groundwater depletion and increasingly destructive and frequent forest fires — like the recent ones in the American West — might seem tenuous at first glance, but in fact such a connection has been observed not just in United States but also across the globe.
Groundwater Dependent Ecosystems
I...
Customer comments
No comments were found for Impact of hydraulic loading rate and media type on removal of bulk organic matter and nitrogen from primary effluent in a laboratory-scale soil aquifer treatment system. Be the first to comment!
