APG-Neuros Inc. products

APG-Neuros’ Turbo Blower technology was founded in the aerospace and defense industry where Aero Engines were used in Unmanned Aerial Vehicles (UAV) and in the F-16 military aviation program, making the technology tested and reliable. The core of the technology is the patented 3^rd generation bump foil air bearing which is oil-free and non-contact, needing no lubricating or associated maintenance thereby resulting in lower vibration from the rotor during operation. Its proven durability and endurance has been demonstrated through 25,000 starts; equivalent to more than twenty years lifetime in a typical operation.

The 1 MW (APGN 1350) is the biggest one-of-its-kind turbo blower with one motor that supplies more air with a smaller footprint, higher total wire-to-air efficiency, more flexible control (variable speed/turndown, low maintenance, and quiet operation). It has a built-in programmable logic controller for easy operation of the blower.

The transferring of dissolved oxygen (DO) from a gas phase to liquid phase is an energy intensive process in the wastewater treatment plant (WWTP), as well as a crucial for the aeration biological process to operate satisfactorily.

Activated Sludge (AS) is a process dealing with the treatment of sewage and industrial wastewaters and developed around 1912-1914. There is a large variety of design, however, in principle all AS consist of three main components: an aeration tank, which serves as bio reactor; a settling tank (“final clarifier”) for separation of AS solids and treated waste water; a return activated sludge (RAS) equipment to transfer settled AS from the clarifier to the influent of the aeration tank.

The term ‘membrane bioreactor’ (MBR) is generally used to define wastewater treatment processes where a perm-selective membrane, eg. microfiltration or ultrafiltration is integrated with a biological process – a suspended growth bioreactor. MBRs differ from ‘polishing’ processes where the membrane is employed as a discrete tertiary treatment step with no return of the active biomass to the biological process. All commercial MBR processes available today use the membrane as a filter, rejecting the solid materials which are developed by the biological process, resulting in a clarified and disinfected product effluent.

DEMON® involves two process steps- the partial nitritation of ammonia and the subsequent anaerobic oxidation of the residual ammonia by nitrite to nitrogen gas. Partial nitritation requires a oxygen demand of only 40 % compared to conventional nitrification. No carbon dosage (Methanol) is required due to the autotrophic nature of the process.

As opposed to the conventional activated sludge process in which wastewater treatment takes place in various, linearly arranged tanks, the SBR process (Sequencing Batch Reactor) occurs sequentially in the same tank.

Aerobic digestion is typically used in an activated sludge treatment plant. Waste activated sludge and primary sludge are combined, where appropriate, and passed to a thickener where the solids content is increased. This substantially reduces the volume that is required to be treated in the digester. The process is usually run as a batch process with more than one digester tank in operation at any one time. Air Blowers are used to provide air through the tank and the contents are stirred to keep the contents fully mixed. Carbon dioxide, waste air and small quantities of other gases including hydrogen sulfide are given off.