Alcoa Inc.

Alcoa USA Corp.

Arconic Corporation

Corporate Environmental Solutions LLC

Keystone Environmental Resources, Inc.

Kleantu LLC

John R Smith

Rajat S Ghosh

David F Iwig

Jaw K Fu

Mark Weaver

Judodine Nichols

Mikhail Gershenzon

Dennis L Fulmer

Kevin Kitzman

Neal Richard Dando

Charles Dobbs

Stephen Paul Sunday

Gregory Charles Kraft

Richard R Lunt

Roger Nichols

Peter Bowen

Robin L Weightman

Andrew C Middleton

Kyle A Crum

Steven C Orkis

Shannon I Parks

Ian Ross Harrison

Gerald E Carkin

Jonell Kerkhoff

Robert C Horger

Orhan D Gencaga

Shannon L Isovitsch Parks

Raymond J Kilmer

Ron Keffer

Peter Goodale

Robert Horger

Richard Donahue

Arch J Merritt, Deceased

Myra Bowen, Legal Representative

Charles L Dobbs

Shannon L I Parks

Aniruddha Bhattachayya

Gerry Carkin

Aniruddha Bhattacharyya

Sarah K Strano

Deniz Gencaga

Rajat Ghosh

Orhan Deniz Gencaga

Shannon L Parks

Stephen P Sunday

Mark L Weaver

A septic tank system includes a multiple compartmented (or chambered) supplemental tank. The supplemental tank has a cover/lid with a plurality of strategically situated access holes (both small and large ports) for servicing the various chambers from above ground.

Multiple chamber septic tank with a plurality of large and small access ports

Generally, the instant disclosure relates to fertilizer compositions and methods of making and using the same. More specifically, the instant disclosure relates to blast suppressant and/or blast resistant ammonium nitrate fertilizer compositions, as well as methods of making and using the same.

Fertilizer compositions and methods of making and using the same

Methods for removing sulfur dioxide from a gas stream are disclosed. A method may include passing a gas stream comprising SOthrough a gas scrubbing apparatus. A scrubbing liquor comprising hydroxide ions and at least one oxidation catalyst may be flowed into the gas scrubbing apparatus, thereby contacting the gas stream with the scrubbing liquor. In response to the contacting, at least 90 wt. % of the sulfur dioxide may be removed from the gas stream. Concomitant to the contacting, at least some of the sulfur dioxide may react with at least some of the hydroxide ions, thereby forming sulfite ions in the scrubbing liquor. Some of the sulfite ions may be oxidized, via the oxidation catalyst, thereby forming sulfate ions in the scrubbing liquor. A used scrubbing liquor may be discharged from the scrubbing apparatus.

Systems and methods for removing sulfur dioxide from a gas stream

Fertilizer compositions are provided, where a fertilizer composition includes: an inner portion including a nitrogen containing material; and an outer portion covering the inner portion, the outer portion including a release agent (e.g. HTC, BR).

Fertilizer compositions and methods of making the same

Methods for removing sulfur dioxide front a gas stream are disclosed. A method may include passing a gas stream comprising SOthrough a gas scrubbing apparatus. A scrubbing liquor comprising hydroxide ions and at least one oxidation catalyst may be flowed into the gas scrubbing apparatus, thereby contacting the gas stream with the scrubbing liquor. In response to the contacting, at least 90 wt. % of the sulfur dioxide may be removed from the gas stream. Concomitant to the contacting, at least some of the sulfur dioxide may react with at least some of the hydroxide ions, thereby forming sulfite ions in the scrubbing liquor. Some of the sulfite ions may be oxidized, via the oxidation catalyst, thereby forming sulfate ions in the scrubbing liquor. A used scrubbing liquor may be discharged from the scrubbing apparatus.

The instant disclosure is directed towards methods of treating wastewater and related systems, where the system includes: a first zone comprising at least one anaerobic tank, and a second zone comprising at least one engineered wetland. In some embodiments, the system includes a third zone comprising at least one bauxite residue cell.

Wastewater treatment systems and methods

The instant disclosure relates to methods, systems, and apparatus for polishing wastewater (i.e. non-potable water) using filtration media. More particularly, the instant disclosure relates to wastewater polishing using a bed of mixed metal oxides under certain operating conditions to remove a plurality of contaminants from a wastewater stream.

Method for removing drugs from waste water using neutralized bauxite residue

Wastewater treatment systems, methods and apparatus for polishing a wastewater stream comprising a plurality of contaminants are provided. One system includes a vessel containing a plurality of natural media filtration agents selected to remove selected ones of the plurality of contaminants from the wastewater stream. In one embodiment, the vessel includes a bed of bauxite residue and at least one other natural media filtration agent. In another embodiment, the vessel includes a bed of compost and at least one other natural media filtration agent. The vessel includes a wastewater inlet that is in fluid communication with one or more of the natural media filtration agents. The vessel includes a wastewater outlet that is in fluid communication with one or more of the natural media filtration agents.

Methods for polishing wastewater utilizing a bed of commingled bauxite residue and iron filings

Systems for polishing wastewater utilizing natural media filtration

Systems and associated methods for treating contaminant-containing wastewater are provided. The systems generally include a reducing zone for reducing the oxidation-reduction potential of the water and a clean-up zone comprising zero valent iron for removing at least a portion of the contaminant from the contaminant-containing water. The systems are operable to remove one or more contaminants from the contaminant-containing water and are operable for extended durations without clogging due to the formation of iron hydroxides.

Systems for treating water using iron

Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister.

Systems and methods for removing gaseous pollutants from a gas stream

Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream.

Methods for treating water using iron

Growing community of inventors

Pittsburgh, PA, United States of America

John R Smith