selenium water removal

Bioremediation of selenium‐contaminated sediments and

Selenium (Se) is a contaminant of agricultural irrigation‐drainage water in the western United States, and the cause of wildlife deaths and grotesque deformities. Some approaches in reducing the toxic Se concentrations from contaminated sediments and water have been proposed, but most of these tend to be costly or ineffective. Get price

Selenium Removal System For Mining Applications

automated process for selenium removal. Raw water is processed through our EPLUS zero valent iron, (ZVI) Media to reduce selenate to selenite and then down to elemental selenium precipitating it directly on to the ZVI media. Dissolved iron is produced by Get price

SELENIUM: BQE Water signs on to provide water

The selenium removal portion of the overall treatment will utilize BQE Water's patented Selen-IX process and treat up to 6,400 m 3 /day of mine impacted water. The initial term of the agreement is five years beginning on Jan.1, 2020, and includes a provision for a three year term extension subject to satisfactory plant performance. Get price

Biological selenium removal from wastewaters

Biological selenium removal from wastewaters Markus Lenz Proefschrift ter verkrijging van de graad van doctor op gezag van de rector magnificus van Wageningen Universiteit Prof. Dr. M. J. Kropff in het openbaar te verdedigen op dinsdag 27 Mei 2008 des Get price

Selenium removal from waste waters by chemical

Selenium can be released to the environment from both natural and industrial activities, resulting in increased selenium concentrations in surface and ground water. Even small concentrations of selenium can be toxic for many forms of aquatic life. Therefore, selenium contamination in the receiving environment is a key issue for many industries. Selenium speciation in solution plays an Get price

Task 3: Selenium Water Treatment and Recovery

Selenium water-treatment removal process produces a selenium waste product that can be readily processed for selenium recovery. Treat water to below the new EPA target concentration of 5 micrograms per liter. Reduce the amount of selenium reporting to a Get price

Datasheet: Selenium Removal With Activated Alumina

The Pureflow System for the removal of selenium from drinking water supplies is an improved design for the water treatment industry. A highly adsorptive activated alumina media and chemical treatment system combine to provide a simple, safe, compact process, with automatic controls, that requires minimum attendance by operations personnel. Get price

US Patent for Integrated selenium removal system for

Justia Patents Including Collecting Or Storing Gas (e.g., Fuel, Carbon Monoxide, Etc.) US Patent for Integrated selenium removal system for waste water Patent (Patent # 9,567,249) Integrated selenium removal system for waste water Sep 23, 2011 Get price

Efficient adsorption of Selenium(IV) from water by

Selenium (Se) could enter the environment through different anthropogenic sources, posing potential health risk. The removal of trace Se(IV) from water by hematite coated magnetic nanoparticle (MNPhematite) under different solution conditions was investigated through batch experiments. Get price

WATER TREATMENT: Golder white paper on selenium

ONTARIO – Golder has completed a white paper, which provides an overview of the information available on selenium water treatment technologies. The document was released by the North American Metals Council's Selenium Working Group (NAMC-SWG) and is the second technical addendum to the white paper on Selenium Removal Technologies developed by the NAMC-SWG in 2010. Get price

The Removal of Selenium from Water by Slow Sand

The feasibility of selenium removal from drainage water by slow sand filtration (SSF) was investigated. Two anaerobic laboratory-scale slow sand filters, operated in parallel, received synthetic feed solution. Selenate reduction and subsequent selenium removal were Get price

Selenium reduction in wastewater for petroleum refineries

USEPA is currently updating the national recommended water quality criterion for selenium, and is currently performing a detailed study of the petroleum refining point-source category. It is likely that petroleum refineries will need to meet wastewater discharge limits for selenium in the low parts per billion range within the next few years. Get price

US Patent for Method of selenium removal Patent (Patent

Referring to FIG. 6, a comparison of selenium removal by different microbes, nutrients, and aeration levels in mine water containing 0.62 mg/L selenium at pH 7.96 is presented. Tests used 250 ml Erlenmeyer flasks containing 50 ml of filter sterilized wastewater and a 10-fold dilution of log phase microbial cells (2.0108 cells/ml) as an inoculum. Get price

Information Technology Solutions USING ZERO VALENT IRON

Proven, Cost-Effective Water Solutions Steven A. Bouse, June 2013 THE REMOVAL OF SELENIUM FROM WATER USING ZERO VALENT IRON SYSTEMS ZVI MEDIUM The highest effluent selenium concentration 5.1 ug/l was the only sampling that exceeded Get price

Removal of Selenium from Industrial Effluent Streams

water media. Amongst them, only a few synthetic materials were reported as having the necessary selenium capacity to be considered potential solutions (3). Unfortunately, most of them are unable to achieve good levels of selectivity for the removal of selenium Get price

SBIR Phase I: Enhanced Biocatalytic Selenium Removal

SBIR Phase I: Enhanced Biocatalytic Selenium Removal from Water and Wastewater Printer-friendly version Award Information Agency: National Science Foundation Branch: N/A Contract: 1416565 Agency Tracking Number: 1416565 Amount: $150,000.00 Get price

Selenium Removal

Selenium Removal Selenium is a metalloid present in the Earth's crust, often occurring in higher concentrations with sulphur containing minerals. Weathering of these minerals can lead to high selenium concentration in groundwater.The mining and power production industries can produce wastewater high in selenium, along with the agricultural industry by the irrigation of selenium rich soils. Get price

Removal of Selenium Using a Novel Algal

A process for removing selenium and nitrate from agricultural drainage water using algae and anaerobic bacteria was studied in a field system. Algae were grown in high-rate ponds containing drainage water, and the 178- 99-mg/L culture took up 18 13 mg/L NO3- – N. Get price

Selenium Treatment in Mine Water – Access Water

2015/4/15CH2M supported the design, construction, and start-up of the full-scale FBR based selenium removal water treatment plant—the first if its kind application for selenium treatment in mine water. Mine waters from three different sources with varying flow, selenium, and nitrate loadings are combined prior to treatment at this centralized facility. Get price

Improving Selenium Oxoanion Removal with Molecular

Selenium in water can be toxic to various organisms at very low concentrations. Layered double hydroxides (LDH) have shown promise as nanomaterial sorbents for selenium oxoanions. Due to similarities between selenium and sulfur oxoanions, LDH can favor sulfate adsorption over that of selenate in solutions with high sulfate concentrations such as power plant wastewater. Get price

High Eﬃciency Adsorption and Removal of Selenate and

standards for selenium in water can be satisﬁed by using NU-1000 as a sorbent, uptake of selenate and selenite at low concentrations was also studied. When exposed to 5 mL of an aqueous solution of selenium as sodium selenite or sodium selenate at 1000 Get price

Information Technology Solutions USING ZERO VALENT IRON

Proven, Cost-Effective Water Solutions Steven A. Bouse, June 2013 THE REMOVAL OF SELENIUM FROM WATER USING ZERO VALENT IRON SYSTEMS ZVI MEDIUM The highest effluent selenium concentration 5.1 ug/l was the only sampling that exceeded Get price

Solving the selenium problem

Selenium removal technology Achieving these new levels is easier said than done. Selenium is a slippery, multi-headed problem for mining. For starters, any technology has to treat large volumes of water to remove tiny traces of selenium. Any given wastewater can Get price

Selenium Removal from Agricultural Drainage Water by Selenate

Selenium Removal from Agricultural Drainage Water by Selenate-Reducing Bacteria (Funded 2002-2003) Principal Investigators: William T. Frankenberger Department of Environmental Sciences UC Riverside (909) 787-3405 williamforange.ucr.edu Yiqiang Get price

Review of Available Technologies for the Removal of Selenium from Water

the Removal of Selenium from Water Presented by Tom Sandy/CH2M HILL North American Metals Council Selenium Work Group November 24, 2009 10:15 – 11:00 a.m. Agenda • Provide a Project Update – Objectives – Approach – Status/Schedule – Outline • Get price

WATER TREATMENT: Golder white paper on selenium

ONTARIO – Golder has completed a white paper, which provides an overview of the information available on selenium water treatment technologies. The document was released by the North American Metals Council's Selenium Working Group (NAMC-SWG) and is the second technical addendum to the white paper on Selenium Removal Technologies developed by the NAMC-SWG in 2010. Get price

Selenite Removal from Water

treatment process for selenium removal—apart from the removal effectiveness criteria such as the removal capacity at C e = 10 μg/L (Q 10 value), maintaining (not modification) the physicochemical characteristics of the water, and estimation of treatment cost—the water flow rate and specific Get price