Abstract. This study is part of a collaborative effort between Montana Tech and the Atlantic Richfield Company (ARCO) to find solutions for treating metal contaminated water (e.g., Cu, Zn, Cd, Mn, and Fe) from the Butte Hill as part of the remediation activities for the Clark Fork River Basin, in Southwestern Montana.The field demonstration systems were constructed in 1995 and include anoxic horizontal flow gravel bed wetlands with cattail plants, horizontal flow gravel/organic substrate wetlands with cattail plants, and a vertical upflow gravel/organic substrate system without plants. Flow through operation was started in May 1996 with a total flow into the treatment systems of approximately 100 m3 Id. Hydraulic residence time for the test cells varies between 1.5 and 10 days. Results from the first year of operation including startup and performance through the winter with respect to hydrology, geochemistry, and microbiology within the test cells are presented. Metal removal efficiencies for the various technologies were determined.Additional key words: Constructed wetlands, metal remediation, sulfate-reducing bacteria, field demonstration study.
A pilot scale field test on passive treatment systems for metal and sulfate removal from ground water and surface runoff, is being conducted in Butte, Montana. This study is a collaborative effort between Montana Tech and the Atlantic Richfield Company (ARCO) to find solutions for treating metal contaminated water (e.g. Cu, Zn, Cd, and Fe). The field demonstration systems include anaerobic horizontal flow gravel bed wetlands with plants, horizontal flow gravel/organic substrate wetlands with plants, and vertical upflow gravel/organic substrate system without plants. The experimental design for sulfate and metal removal will be presented as well as the hydraulic design criteria used. Results from this test will be used to estimate system economics, long term performance and the life expectancy for these systems. Studies on mesoscale passive treatment systems such as 1.5 m high vertical upflow gravel/organic substrate columns are also presented. The parameters describing system performance are: hydraulic conductivity, volumetric sulfate-reduction rate, and metal immobilization rate.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.