Taking an Integrated Approach to Selenium Removal

2013-10-7  Mauro Marinetti’s paper “Selenium Removal from a Refinery Wastewater: Integrated Approach from Source Control to Wastewater Treatment” will be presented by co-author Kar Munirathinam,CH2M HILL, on Tuesday, October 8 at 10:30 a.m. in TS303, during the Water Environment Federation Technical Exhibition and Conference,in Chicago, Illinois.

SELEN-IXTM: SELENIUM REMOVAL FROM MINING

2014-12-15  New Selenium Removal Technology This paper describes Selen-IX™, a novel integrated process developed by BioteQ for the selective removal of both selenite and selenate from water to concentrations below 5 µg/L. Selen-IX™ does so with minimal co-removal of other species from a wide range of water compositions. As Selen-IX™ involves

(PDF) Selenium removal from mining and process

the removal of selenium from contaminated wa ter were discussed wherein adsorption capacities in the range of 0.22 120 mg/g and 0.135 127 mg/g, respectively, were reported in the

Advancement in Non-Biological Selenium Removal

2018-2-5  High capital and O&M costs of integrated biological treatment systems (Utility Water Act Group 2017) Non-biological treatment processes most often considered for selenium removal include ferric co-precipitation, reverse osmosis (RO) and nanofiltration (NF) membrane treatment, limited-use sorbents and Selen-IX™.

Selenium Water Treatment Envirogen Technologies

2021-3-16  Selenium treatment of contaminated water by biological means involves the use of non-pathogenic bacteria, nutrients, project-specific media and electron donors, operated in an anoxic state. In selenium water treatment, selenite and selenate are reduced to insoluble selenium that is removed along with biomass and feed suspended solids by downstream liquid/solids separation. This process is

Removal of selenium from water with nanoscale zero

Removal of selenium from water with nanoscale zero-valent iron: mechanisms of intraparticle reduction of Se(IV). Lan Ling State Key Laboratory of Pollution Control and Resource Reuse, PR China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.

(PDF) Removal of selenium from wastewater by using

The removal of selenium by using Magnesite-bentonite clay composite was studied in batch experiments. The effects of equilibration time, composite dosage, selenium concentration and pH on removal

Estimating selenium removal by sedimentation from

The spatially integrated Se sedimentation rate was estimated to be 624 kg/a within a range of uncertainty between 285 and 960 kg/a. Comparison to annual Se loading and other potential removal processes suggests burial by sedimentation is not the primary removal process for Se

Advancement in Non-Biological Selenium Removal

2018-2-5  High capital and O&M costs of integrated biological treatment systems (Utility Water Act Group 2017) Non-biological treatment processes most often considered for selenium removal include ferric co-precipitation, reverse osmosis (RO) and nanofiltration (NF) membrane treatment, limited-use sorbents and Selen-IX™.

Method and system for removal of selenium from FGD

For the conditions listed in Table 1, selenium treatment required less than 30 minutes of reaction time and 120 minutes of sedimentation time at a pH between 8.8 and 9.2 and at a temperature greater than 35° C. TABLE 1 Selenium Removal from FGD Scrubber Purge Water by Ferrous Ion Reduction/Co-precipitation with Sedimentatino of Solids Effluent

Industrial Wastewater Treat Selenium McCue

Selenium Removal. Selenium is often present in the minerals extracted in mining operations and it can leach into the mine contact water from waste rock piles. It is also found in wastewater from other industries such as crude-oil refineries. The system is readily integrated with equipment for treatment of other contaminants, such as metals

Magnetic Sorbent for the Removal of Selenium(IV) from

2020-4-28  water Article Magnetic Sorbent for the Removal of Selenium(IV) from Simulated Industrial Wastewaters: Determination of Column Kinetic Parameters Andrew Ying 1,y, F. Evans 1,2,y, Costas Tsouris 3 and M. Parans Paranthaman 1,2,* 1 Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA; [email protected] (A.Y.); [email protected]

Selenium Removal From Ground Water Using

----- EPA-600/2-80-153 August 1980 SELENIUM REMOVAL FROM GROUND WATER USING ACTUATED ALUMINA BY R. Rhodes Trussell, Albert Trussell and Peter Kreft Oames M. Montgomery, Consulting Engineers, Inc. Pasadena, California 91101 Contract No. 68-03-1515 Project Officer Richard Lauch Drinking Water Research Division Municipal Environmental Research Laboratory Cincinnati,

Kinetics and mechanism of selenate and selenite

1. Introduction. Selenium is an essential element for humans, but it is associated with acute toxicity above 1.4 mg l −1 and with mutagenicity above 12 mM [1,2].It commonly exists under four oxidation states, among which Se(IV) as selenite (SeO 3 2−) and Se(VI) as selenate (SeO 4 2−) are the most stable species in water.Besides, Se(IV) is more toxic than Se(VI) .

Selenium Water Treatment Envirogen Technologies

2021-3-16  Selenium treatment of contaminated water by biological means involves the use of non-pathogenic bacteria, nutrients, project-specific media and electron donors, operated in an anoxic state. In selenium water treatment, selenite and selenate are reduced to insoluble selenium that is removed along with biomass and feed suspended solids by downstream liquid/solids separation. This process is

Selenium Removal Process Headworks International Inc.

2018-12-21  Challenges faced in selenium removal . This is a more cost-effective technique than precipitation. In this the soluble selenium oxides (selenate and selenite) are converted to selenium removal reactor. Here the integrated Fixed-Film Activated Sludge technology is used to reduce selenium oxides into elemental selenium. Features

Removal of selenium from water with nanoscale zero

Removal of selenium from water with nanoscale zero-valent iron: mechanisms of intraparticle reduction of Se(IV). Lan Ling State Key Laboratory of Pollution Control and Resource Reuse, PR China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.

Method and system for removal of selenium from FGD

For the conditions listed in Table 1, selenium treatment required less than 30 minutes of reaction time and 120 minutes of sedimentation time at a pH between 8.8 and 9.2 and at a temperature greater than 35° C. TABLE 1 Selenium Removal from FGD Scrubber Purge Water by Ferrous Ion Reduction/Co-precipitation with Sedimentatino of Solids Effluent

Estimating selenium removal by sedimentation from

The mass of Se deposited annually to sediment in the Great Salt Lake (GSL) was estimated to determine the significance of sedimentation as a permanent Se removal mechanism. Lake sediment cores were used to qualitatively delineate sedimentation regions (very high to very low), estimate mass accumulation rates (MARs) and determine sediment Se concentrations.

Selenium Water Treatment Envirogen Technologies

2021-3-16  Selenium treatment of contaminated water by biological means involves the use of non-pathogenic bacteria, nutrients, project-specific media and electron donors, operated in an anoxic state. In selenium water treatment, selenite and selenate are reduced to insoluble selenium that is removed along with biomass and feed suspended solids by downstream liquid/solids separation. This process is

Selenium Removal From Ground Water Using

----- EPA-600/2-80-153 August 1980 SELENIUM REMOVAL FROM GROUND WATER USING ACTUATED ALUMINA BY R. Rhodes Trussell, Albert Trussell and Peter Kreft Oames M. Montgomery, Consulting Engineers, Inc. Pasadena, California 91101 Contract No. 68-03-1515 Project Officer Richard Lauch Drinking Water Research Division Municipal Environmental Research Laboratory Cincinnati,

Field evidence of selenium bioreduction in a uranium

Removal of selenium from groundwater was documented during injection of acetate into a uranium‐contaminated aquifer near Rifle, Colorado (USA). Bioreduction of aqueous selenium to its elemental form (Se 0) concentrated it within mineralized biofilms affixed to tubing used to circulate acetate‐amended groundwater.

Frontier Water Systems Selenium, Nitrate and Metals

2020-2-21  Frontier Water Systems: Modular, Prefabricated Selenium Treatment. Advanced Treatment Systems for North America’s Toughest Waters. At Frontier Water Systems, we clean some of the hardest to treat waters from power plants, mines, municipalities, and farmlands, ensuring safe water for

Temporal Influences on Selenium Partitioning, Trophic

2021-2-23  Hydrologic and irrigation regimes mediate the timing of selenium (Se) mobilization to rivers, but the extent to which patterns in Se uptake and trophic transfer through recipient food webs reflect the temporal variation in Se delivery is unknown. We investigated Se mobilization, partitioning, and trophic transfer along approximately 60 river miles of the selenium-impaired segment of the Lower

Advanced Carbon Products mcilvainecompany

2012-5-4  Se Removal from Secondary Treatment Effluent WWT CCI’s process [Se] Maximum Discharge Limit 0.005 mg/L CCI’s proprietary process can be integrated following conventional waste water treatment to remove Se. 13