This disclosure relates to a method of fabricating a multivalent iron bio-inhibitor from waste bauxite residue and methods of controlling reservoir souring using the multivalent iron bio-inhibitor.

Compositions, systems, and methods of using alkaline-producing Aluminate salts in the sludge collection and digestion steps of wastewater processing to reduce acidity and/or build alkalinity, reduce hydrogen sulfide release, and reduce phosphate in the effluent.

Methods and systems of controlling odor in. water by adding a humic composition to the water. The humic composition cm adsorb or otherwise neutralize malodorous compounds such as hydrogen sulfide, ammonia, and mercaptans. The methods are useful in food and. agricultural industries where the water may come in contact with food items.

Compositions, systems, and methods of using alkaline-producing Aluminate salts in the sludge collection and digestion steps of wastewater processing to reduce acidity and/or build alkalinity, reduce hydrogen sulfide release, and reduce phosphate in the effluent.

A mobile sewage treatment and water reclamation system and method of use thereof for rapid deployment to augment existing wastewater systems and/or provide interim service in lieu of permanent facilities, includes: (a) a denaturing stage wherein raw sewage is first ground into suspendable grit, its pH alternatively or collectively lowered to kill acid-sensitive bio-organisms, and raised to kill base-sensitive bio-organisms, and then neutralized; (b) a clarifying stage employing an inverted-cone tank to circulate the solution after injection with chemicals to flocculate small particles for collection in a layer for siphoning off; and (c) a disposal stage wherein clarified water passes through media filters to remove remaining solids and odors, the effluent water being clean enough for irrigation, aquatic life and discharge into waterways; and wherein sterile sludge is pressed into semi-dry solids, then dried, crushed, powdered and bagged for use as high-nitrate biomass fertilizer or for fossil-fuel power co-generation applications.

This disclosure relates to a method of fabricating a multivalent iron bio-inhibitor from waste bauxite residue and methods of controlling reservoir souring using the multivalent iron bio-inhibitor.

A computer implemented method and a system abates the presence of sulphide (H2S(g), H2S(aq) or HS-(aq)) in a wastewater flowing in a specific wastewater network from an upstream pumping pit to a downstream pumping pit or manhole. The computer implemented method and a system includes dosing into the wastewater at a position upstream of the downstream pit or manhole a chemical for abatement of sulphide, determining by use of a sensor the concentration of sulphide at a position downstream of the position at which chemical is dosed into the wastewater, such as located in the downstream manhole. The amount of chemical dosed is determined by use of a general agent and a specific agent.

A method and apparatus for treating wastewater from hydrocarbon production, transport, and refining, comprising treating oily sour water with sodium chlorite to remove hydrogen sulfide and kill sulfate reducing and acid producing bacteria from the fluids harvested from oilfield operations, and facilitate the recovery of oil and water free of hydrogen sulfide and devoid of bacteria. The cationic sodium chlorite facilitates better separation of oil and water by coagulating the solids to create emulsion layers of oil, water, and precipitated sulfur solids. The oil is skimmed or decanted and subsequently refined, while the water is pH corrected and then disposed or recycled substantially free of hydrogen sulfide.

A self contained, automatic water quality monitoring and treatment system includes a water quality interface control module having a signal processor configured to: receive signaling containing information about a baseline test of pH and ORP levels of water to be monitored and also about a subsequent test of the pH and ORP levels of water to be monitored later in time to the baseline test; determine corresponding signaling containing information about the quality of the water being monitored based upon a percentage of change between the baseline test and the subsequent test later in time to the baseline of the pH and ORP levels of water being monitored; and provide the corresponding signaling for remote awareness, including wireless signaling for providing mobile or Internet awareness, and/or for controlling the treatment of the water being monitored.

The present invention relates to a system and a method for abating the presence of a selected chemical substance in wastewater flowing in a wastewater channel system from an upstream position to a downstream position. The method typically comprising dosing into the wastewater, at the upstream position, chemical agent(s) adapted to abate the presence of said selected chemical substance, wherein the dosing is in an amount set by a dosing set-point, and adjusting the dosing set-point based on determinations of the concentration of the selected chemical substance at the downstream position. The invention involves comparison between a determined concentration and a pre-selected fractile and adjusting a dosing set-point based thereon.