After screening and grit removal wastewater still contains organic residues. Aeration incorporates oxygen into the wastewater, which stimulates aerobic bacteria to breakdown the organic matter.
Diffused aerators are extremely efficient. They are placed at the bottom of the tank and release a continuous supply of bubbles into the wastewater. As they work their way to the surface, air from inside the bubbles dissolves into the wastewater and provides a continuous supply of oxygen. Diffused aerators are designed to distribute oxygen evenly throughout the entire tank.
REHAU Industries disc aerator systems have been developed for fine-bubble aeration of municipal and industrial wastewater in the biological treatment process.
REHAU Industries offers two different membrane options for both disc and pipe aeration systems:
RAUBIOXON Plus
RAUBIOFLEX
Features
The RAUBIOXON Plus Aerator with silicone membrane is designed to offer lower maintenance and power consumption cost in both municipal and industrial application.
Material properties of the silicone membrane:
High tear strength of 45 N/mm (acc. to ASTM D624B)
High temperature resistance of up to 120oC
Permanent elasticity
Resistance to oil and grease
No membrane hardening or shrinkage
Free of plasticiser
Low susceptibility to biofouling.
The RAUBIOFLEX Aerator has a high-quality EPDM membrane system with excellent oxygen transfer rates. It has been designed for continuous and intermittent operation.
Material properties of EPDM membrane:
Tear strength of 18 N/mm (acc. to DIN 53507A)
High temperature resistance of up to 80oC.
REHAU has developed a patented disc and pipe saddle lock connection that enables effortless and fast installation. Advantages include:
Snap-on fastener for fast installation and removal
No risk of loosening of aerator
No tools required.
Discs are available with an optional non-return valve and check valve.
REHAU Industries pipe aerator systems have been developed for fine-bubble aeration of municipal and industrial wastewater in the biological treatment process.
REHAU Industries offers two different membrane options for pipe aeration systems:
RAUBIOXON Plus
RAUBIOFLEX
Features
The RAUBIOXON Plus Pipe Aerator with silicone membrane is designed to offer lower maintenance and power consumption cost in both municipal and industrial application.
Material properties of the silicone membrane:
High tear strength of 45 N/mm (acc. to ASTM D624B)
High temperature resistance of up to 120oC
Permanent elasticity
Resistance to oil and grease
No membrane hardening or shrinkage
Free of plasticiser
Low susceptibility to biofouling.
The RAUBIOFLEX Pipe Aerator has a high-quality EPDM membrane system with excellent oxygen transfer rates. It has been designed for continuous and intermittent operation.
Material properties of EPDM membrane:
Tear strength of 18 N/mm (acc. to DIN 53507A)
High temperature resistance of up to 80oC.
Both the RAUBIOXON Plus Pipe Aerators and the RAUBIOFLEX Pipe Aerators are available with a standard threaded rod connection or with REHAU’s patented Duo Saddle Lock connection.
The Duo Saddle Lock connection enables effortless and fast installation. Advantages include:
Snap-on fastener for fast installation and removal
REHAU’s Duo Pipe Aerators have an integrated saddle lock connection to speed up installation. This patented saddle lock connection means effortless and fast installation of pipe aerators.
Features
Features include:
Snap-on fastener for fast installation and removal
No risk of loosening of aerator
No tools are required
Suitable for all major air distribution pipe dimensions
Choice of silicone and EPDM fine bubble membranes.
REHAU has developed patented disc and pipe saddle lock connections to speed up installation. These saddle lock connections mean effortless and fast installation of REHAU disc and pipe aerators.
Features
Features include:
Snap-on fastener for fast installation and removal
No risk of loosening of aerator
No tools are required
Suitable for all major air distribution pipe dimensions
Choice of silicone and EPDM fine bubble membranes.
The Jäger Umwelt-Technik Jetflex ® SSD Smart Strip Diffuser is made of PVC with a micro-perforated membrane made of polyurethane. It is characterised by easy installation on the pool floor and a long service life. When the membrane of this diffuser reaches its end-of-life the membrane is quickly and easily replaced without having to replace the entire diffuser.
Features
The Jetflex ® SSD membrane is designed as a continuous airtight double membrane and is fitted with an air connection. The air introduced between the membranes can only escape via the micro perforation of the upper membrane. As a result, the membrane is completely decoupled from the base structure — a feature unique to this diffuser type. This diffuser is characterised by:
