Environmental

Waste Water Treatment

There are various applications that utilize NASH products to improve our environment. Aeration is one very necessary function in many environmental applications. For example, NASH liquid ring vacuum pumps and compressors can be used in the following processes: compression of gases; collection of materials; and aeration.

Filter Applications Brochure
Filter Applications (EMEA)


Biogas ProductionCompatible Products

The biomass produced in activated sludge tanks and clarifying tanks is stabilized in the digestion tower and used to produce biogas. A thorough mixing of the sludge increases the gas yield and reduces its retention time in the reactor. In the process, the gas is withdrawn from the upper part of the digestion tower, compressed in the liquid ring compressor and reintroduced through the nozzles at the bottom.


Vectra GL / XL Vacuum Pumps

Vectra GL / XL Vacuum Pumps

Vectra GL/XL Vacuum Pumps The NASH Vectra was designed around a modular platform using the most advanced computer aided design techniques, such as 3D solid modeling and finite element analysis (FEA). The modular platform offers the advantage of two versions with numerous common parts.

Learn More


XT Systems

XT Systems

The new NASH XT Systems use the Nash pump advantages within a water-saving, self-contained system. Their capacity range is 200-1300 CFM (340-2210 m3/h). Designed for use in clean applications, such as medical centers, labs, paper converting, semiconductor applications, dairy and more, XT Systems give you the benefits of a liquid ring vacuum pump without the problem of providing constant seal liquid.

Learn More

Digester Gas CompressionCompatible Products

NASH liquid ring pumps draw the digester gas off the top of the digester and recirculate it to improve mixing and rate of reaction. The pump's operating liquid cools the digester gas by absorbing the heat of compression, thus providing an almost isothermal mode of operation. This has a positive effect on the service life of downstream valves, gas burners and motors, and it reduces maintenance costs. The cooling function of the operating liquid simultaneously acts as a flame arrester and reduces expenditures for explosion protection. The contaminated raw gas is also cleaned in the water ring as though in a gas scrubber and is partially dried. The gas is thus oxygenated and returned to the wastewater treatment process.


Vectra GL and XL Compressors

Vectra GL and XL Compressors

The Vectra GL model, available from 120 to 830 CFM (200 to 1,500 m³/hr), is ideal for general industrial applications. It comes standard with internal mechanical seals and many Nash patented innovations including gas scavenging. The Vectra XL model was designed to meet the stringent requirements of many CPI applications. Whether operating as a vacuum pump or compressor, it features a 30 PSI (2 bar) differential capability. It is available in ductile iron or 316L stainless steel with a variety of shaft sealing options. Sizes range from 120 to 5,300 CFM (200 to 9,000 m³/hr).

Learn More

Vacuum PrimingCompatible Products

In this application, vacuum pumps are used to maintain a prime in cooling water systems. Maintaining a prime allows water circulating pumps to maintain design water flows with minimum power consumption. Single stage liquid ring pump packages, often supplied with priming valves, are ideal for this application because they prevent ingesting of water slugs into the pumps.


2BV5 Monoblock Liquid Ring Pump

2BV5 Monoblock Liquid Ring Pump

When compared to conventional pumps, the 2BV5's monoblock design delivers the benefits of a simple, compact and economical intallation. Since the pump and motor are integral and self supporting, there is no need for additional baseplates, couplings or guards, which add to the cost, complexity and overall size of the installation.

Learn More


2BV7 Monoblock Liquid Ring Pump

2BV7 Monoblock Liquid Ring Pump

The NASH 2BV7 pumps have been designed to provide superior performance for a wide array of applications. Available from 18 to 75 CFM (30 to 140 m³/hr), their high vacuum capability, extra water handling ability and compact size combine to make an ideal machine for industries like plastics manufacturing and medical technologies.

Learn More

Wastewater Purification/Oxygenation of Activated Sludge TanksCompatible Products

To reduce the space requirements and costs of wastewater treatment plants, a growing number of activated sludge tanks are being set up. The introduction of oxygen is extremely important for purifying wastewater. NASH compressors supply the pressure required for maximum oxygen yield.


Vectra GL / XL Vacuum Pumps

Vectra GL / XL Vacuum Pumps

Vectra GL/XL Vacuum Pumps The NASH Vectra was designed around a modular platform using the most advanced computer aided design techniques, such as 3D solid modeling and finite element analysis (FEA). The modular platform offers the advantage of two versions with numerous common parts.

Learn More