Ecolab USA Inc.

Tarun Kumar Bera

Jitendra T Shah

Prasad Y Duggirala

Weiguo Cheng

Fan Yang

Paul J Zinn

Manish Kumar Singh

John David Morris

Wesley Lamar Whipple

Vaideeswaran Sivaswamy

Roger W Fowee

Glenn L Scattergood

Winston Su

Darlington Mlambo

Yogesh Bhole

Luiz Wanderley Bratfisch Pace

Jiaqi Zhang

Deepak Jadhav

Trishul Artham

Kiran Phatangare

Paul Joseph Zinn

A method for efficiently removal of oxidised selenium from liquid, such as FGD wastewater. The method involves adding a non-iron-based reducing agent (e.g. sodium dithionite) and preferably Fe(II) ions to the liquid at a pH of above 7.5 or 8 and precipitating elemental selenium from the liquid.

Process for removal of selenium from water by dithionite ions

Disclosed are methods useful in applications relating to blast furnace processes. The methods of the present invention provide enhanced deposition inhibition of particulate matter in top-pressure recovery turbines. The methods of the present invention comprise adding nitrogen-containing compounds to a top-pressure recovery turbine, inhibiting deposition of solids formed from blast furnace gas on top-pressure recovery turbine components.

Top-pressure recovery turbine deposition control

Novel fluorophores and their use as fluorescent tags for polymers used in wastewater treatment. The fluorophores are quaternary amine salts that can be used to synthesize fluorescent tagged polymers that are stable at varying pH, have significant water solubility, and may be fluorescent at wavelengths greater than 550 nm. The fluorophores readily undergo polymerization with vinylic monomers to form fluorescent tagged polymers with excellent incorporation of fluorophore into the polymer framework. The fluorescent tagged polymers are useful to monitor and optionally dose industrial wastewater.

Fluorescent polymers for water treatment

The present disclosure relates to a formulation and a process for the removal of inorganic impurities from waste water. The formulation consists of a blend of at least one alkali metal aluminate, at least one cationic organic coagulant and optionally at least one alkalinating agent in pre-determined proportions. The process for decontamination using the afore-stated formulation includes steps such as admixing, settling, microfiltration and optionally acidification, ultrafiltration and reverse osmosis. The disclosure further provides an apparatus for the removal of inorganic impurities from waste water.

Waste water decontamination

Dewatering agents and methods of dewatering wastewater slurries are provided. Also disclosed are methods for improving the separation of solids from water. The water may be produced water, raw water, or wastewater, for example. The dewatering agents can be in solutions and the dewatering agent solutions may include various components in addition to soy protein, soy flour or a combination of soy flour and soy protein.

Enhancement of dewatering using soy flour or soy protein

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Pune, India

Tarun Kumar Bera