Well Water Quality and Home Treatment Systems
This publication is an overview of systems commonly used to treat water quality problems. It is preferable to provide a safe source of water rather than depend upon treatment devices to remove aesthetic and/or health related contaminants because treatment units may unknowingly fail completely or malfunction. The best approach is to determine how and where contaminants are entering the system and eliminate the entry pathway. Some contaminants are naturally occurring in ground water and treatment may be the only option.
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Groundwater Hydrology
- Purpose: The purpose of this manual is to provide guidance to Corps of Engineers personnel who are responsible for groundwater-related projects.
- Applicability: This manual applies to all USACE Commands having responsibility for design of civil works projects.
- Distribution Statement: Approved for public release, distribution is unlimited.
Groundwater Hydrology
- Purpose: The purpose of this manual is to provide guidance to Corps of Engineers personnel who are responsible for groundwater-related projects.
- Applicability: This manual applies to all USACE Commands having responsibility for design of civil works projects.
- Distribution Statement: Approved for public release, distribution is unlimited.
Removal of Hazardous Metals from Groundwater by Reverse Osmosis
Abstract:
This EPA treatment technology project was designed to collect data on the performance of existing water treatment processes in order to remove arsenic on pilot-scale. Our paper contains verification testing of the reverse osmosis membrane module conducted over a 30-day period at the Spiro Tunnel Bulkhead water (Park City, Utah, USA), which is considered to be a ground water. The total arsenic concentration in the feed water averaged 60 ppb during the test period and was reduced to an average of 1 ppb in the treated (permeate) water. The work reported here focused on obtaining accurate readings for arsenic valence states (III) and (V), using an anion exchange resin column. The dominant arsenic species in the abandoned silver mine tunnel feed water was As(V). Results of analysis showed that 70% of the arsenic present in the feed water was in dissolved form. Arsenic speciation for valence states (III) and (V) showed that arsenic (V) represented 76% of the dissolved arsenic in the source water. The method detection limit (MDL) for arsenic using ICP-MS was determined to be 0.1 ppb. Our matrix spiked recovery, spiked blank samples and reference materials deviated only a few percentage points from the listed true values.
Removal of Hazardous Metals from Groundwater by Reverse Osmosis
Abstract:
This EPA treatment technology project was designed to collect data on the performance of existing water treatment processes in order to remove arsenic on pilot-scale. Our paper contains verification testing of the reverse osmosis membrane module conducted over a 30-day period at the Spiro Tunnel Bulkhead water (Park City, Utah, USA), which is considered to be a ground water. The total arsenic concentration in the feed water averaged 60 ppb during the test period and was reduced to an average of 1 ppb in the treated (permeate) water. The work reported here focused on obtaining accurate readings for arsenic valence states (III) and (V), using an anion exchange resin column. The dominant arsenic species in the abandoned silver mine tunnel feed water was As(V). Results of analysis showed that 70% of the arsenic present in the feed water was in dissolved form. Arsenic speciation for valence states (III) and (V) showed that arsenic (V) represented 76% of the dissolved arsenic in the source water. The method detection limit (MDL) for arsenic using ICP-MS was determined to be 0.1 ppb. Our matrix spiked recovery, spiked blank samples and reference materials deviated only a few percentage points from the listed true values.
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