The present invention relates to a device, particularly a nozzle, for treating waste water, said nozzle having an outer tube and an inner tube. An intermediate space is formed between the outer tube and the inner tube and said intermediate space between the outer tube and the inner tube is divided into at least two chambers in the longitudinal direction of the tubes. The inner tube tapers in the longitudinal direction and then widens again and has at least one opening into each chamber at the constricted area. On the inner side of the inner tube and/or in the interior thereof, the device preferably has a catalyst. The present invention further relates to a method for oxidizing polluted waste water and a system for performing the method.

A gas mixer may include a first gas channel, a first distribution channel, a second gas channel and a plurality of first connection channels. The first gas channel may be configured to supply a first gas into a reaction chamber. The first distribution channel may surround the first gas channel and is configured to uniformly distribute a second gas within the first distribution channel. The second gas channel may be configured to supply the second gas into the first distribution channel. The plurality of the first connection channels may be connected between the first distribution channel and the first gas channel. Thus, the second gas may be uniformly distributed in the cylindrical first distribution channel. The second gas may then be supplied to the first gas channel through the first connection channels. The second gas may be mixed with the first gas to form a mixed gas. As a result, the mixed gas may be uniformly distributed in the reaction chamber.

An automated drilling-fluid additive system and method for on-site real-time analysis and additive treatment of drilling fluid to be injected into a well. The drilling fluid includes returned drilling fluid intended to be re-used, which has a variety of viscosity and other qualities resulting from its various preceding use. The target drilling fluid will have a variety of viscosity and other qualities depending upon and changing with various phases of drilling operations and various conditions encountered. The drilling fluid is analyzed in real time as it flows into the automated drilling-fluid additive system, and various additives are added to and thoroughly blended with the drilling fluid as needed to achieve the desired result. The blended drilling fluid is discharged from the automated drilling-fluid additive system in the proper condition for injection into a well.

An exhaust-gas treatment arrangement for an exhaust system of an internal-combustion engine includes a diesel internal-combustion engine. The arrangement includes a first exhaust-gas treatment unit and, downstream of the first exhaust-gas treatment unit, an exhaust-gas treatment assembly. The first exhaust-gas treatment unit and the exhaust-gas treatment assembly are arranged axially succeeding one another in the direction of a longitudinal axis of a flow path encompassing the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon-feeding assembly is provided for feeding hydrocarbon into exhaust gas flowing in the flow path. The hydrocarbon-feeding assembly includes a hydrocarbon-dispensing unit dispensing hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. A swirl-flow-generating unit is provided in the flow path upstream of the hydrocarbon-dispensing unit.

An aftertreatment system includes an introduction conduit and a mixer disposed within the introduction conduit. The introduction conduit is centered on a mixer body center axis. The mixer includes a mixer body, an exhaust sampling flange, an outlet flange, and an outlet tube. The exhaust sampling flange is coupled to the mixer body at a location adjacent to a second end of the mixer body. The exhaust sampling flange includes exhaust sampling flange apertures arranged in an array that extends circumferentially around the mixer body center axis. The outlet flange is coupled to the second end downstream of the exhaust sampling flange. The outlet flange includes an outlet flange aperture. The outlet tube is coupled to the outlet flange. The outlet tube is in fluid communication with at least one of the exhaust sampling flange apertures. The outlet tube extends over a portion of the outlet flange aperture.

Provided is a slurry treatment apparatus includes: a treatment tank for performing any treatment of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound; a first pipe; a second pipe; and a pump, in which one end of the first pipe has a suction opening for sucking the slurry from the treatment tank, the other end of the first pipe is connected to a suction port of the pump, one end of the second pipe is linked to a discharge port of the pump, the other end of the second pipe is connected to a microbubble generator, and the microbubble generator includes a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle, and supplies microbubbles to the slurry in the treatment tank.

A multi-autoclave lateral conversion module includes a central mixing process pipe having first and second terminal ends, a heating unit providing heated air at the first terminal end of the central mixing process pipe, two or more gas injection units connected to opposing sides of the central mixing process pipe at a first addition point located between the first and the second terminal ends, and each gas injection unit receiving the process discharge gas from an autoclave unit. The process discharge gas is transmitted from an autoclave unit through the gas injection unit into the central mixing process pipe where it mixes with the process discharge gas from the other autoclave unit, and then the mixed process gases are converted. Process units other than autoclaves can also utilize the module and method provided.