Abstract: A system for removing ammonia from an ammonia-containing liquid, comprising a heat exchanger, an ammonia stripper and an acid scrubber, wherein the ammonia stripper comprises at least two stripper units, which are in fluid communication with one another through a series connection, forming a fluid flow path from the ammonia-containing liquid inlet through the at least two stripper units to the liquid discharge outlet, and wherein the acid scrubber comprising at least two scrubber units, which are in gas communication with one another and the at least two stripper units through a series connection, forming a gas flow path from the air inlet through the at least two stripper units and scrubber units to the scrubber air outlet which is opposite to the fluid flow path through the striper units.

Abstract: An internally fed drum filter for treating waste water, includes an inlet distribution arrangement for distributing waste water entering the drum filter via an inlet duct, characterized in that the inlet distribution arrangement includes an adjustable flow deflection member arranged near the outflow opening of the inlet duct, downstream thereof, for adjusting the flow characteristics of waste water entering the drum filter via the inlet duct.

Abstract: In a method of anaerobic treatment of an organic waste stream (1), a stream originating from an anaerobic reactor (5) is fed to a first separating unit (33) to be separated into a sludge fraction (7?) containing between 50% and 80% of the solids by weight and a second fraction (7). The second fraction (7) is fed from the first separating unit (33) into a Dissolved Gas Floatation (DGF) unit (16). The sludge fractions (7?) and (9) from the separator units (33) and (16) are fed back to an inlet 41 of the reactor 5.

Abstract: The present invention relates to a method of generating white water for use in Dissolved Air Flotation (DAF) processes, the method comprising the steps of forming a reduced pressure air/water mixture; subjecting the air/water mixture to an elevated hydrostatic pressure in a water column to achieve substantial dissolution of air in water; removing the air in water solution from the elevated hydrostatic pressure region to form a super-saturated air in water solution; and introducing the super-saturated air in water solution into a process stream wherein the air is released from solution as white water micro-bubbles while in intimate contact with contaminants to perform Dissolved Air Flotation.

Abstract: The invention relates to a method for treating fluid (2) resulting from hydraulic fracturing with liquid/solid separation (3), comprising the steps of: receiving the fluid in a vessel (4), such as a mixing tank or a plug flow reactor, adding a chemical mix comprising organoclay to the fluid in the vessel to reduce levels of dissolved salts and organic compounds and molecules, and to allow coagulation and flocculation to occur, adding pH-adjustment chemicals to the fluid in the vessel to reduce water hardness, adding a micaceous metal complexing agent to the fluid in the vessel to at least partially remove ionic or complexed metalloids. The invention also relates to an assembly for carrying out the method as well as a vessel to be used therein.

Abstract: The invention relates to a separator device for separating a first liquid substance from a second substance, the two substances forming a mixture. The apparatus comprises a vessel with an inlet for receiving the mixture, a first outlet for discharge of a first fraction of the mixture, a second outlet for discharge of a second fraction of the mixture and a flow element. The flow element comprises a number of parallel tubular channels defining a flow path for the mixture, the channels having an gilet end for receiving the mixture and an outlet end for discharge of the first fraction, a length direction of the channels being inclined with respect to a horizontal direction, wherein in a transverse cross section through the flow element, the channels form a two-dimensional array of closed cells, each cell defining a boundary of a flow channel, the cells being arranged in at least two rows, each cell in a first row contacting with its perimeter a cell in the second row.