The fixed type diffuse air aeration system is used with all types of air diffusers, whether they are fine bubble type or thick, circular or tubular bubble, and represents the highest in terms of oxygen transfer and low energy consumption.
This system configuration is indicated for application in all types of ponds or tanks of concrete, metallic, fiberglass (PRFV) or thermoplastics.
It presents the great advantage of possibility of implantation of a greater density of diffusers, which always means less use of air flow by diffuser. In this way, it is possible to obtain higher rates of oxygen transfer.
Fixed systems are run with sets of stainless steel or PVC bottom pipes. They have operational differentials such as secondary distribution manifolds, for more homogenous air distribution and automatic purge system for greater flexibility and operational reliability.
It is the type of system most implanted in the country.
• Conventional Activated Sludge
• Activated Sludge with Extended Aeration
• Batch Activated Sludge (SBR)
• MBBR
• MBR
• Underwater Aerated Biofilters
• Equalization Tanks
• Aerobic Digesters
• Aerated Sandboxes
• Ozonizers
• Low energy consumption
• High oxygen transfer efficiency
• Excellent mix
• Homogeneous dissolved oxygen
• Low financial investment
• High aeration density
• Systems with closing manifolds
• Automatic purge systems
• High performance membrane diffusers with titanium dioxide
• Bottom branches made of stainless steel or PVC
• Systems dimensioned with low air flow per diffuser
• Stainless steel fixing brackets
Blowers
B&F Dias has a complete line of air generation systems with centrifugal blowers, bolts and roots developed especially for application in diffusion air aeration systems under the strictest controls and quality standards achieved in more than 25 years of application development. The use of air generating systems with bolts or roots blowers is synonymous with lower energy consumption, guaranteed generation of air free of oil, minimal maintenance and high durability. With a huge variety of models of different sizes, assembled in various configurations, the air blowers stand out for the application of diverse forms of operation with flow intervals from 35 up to 15800 m3 / h with pressures up to 1200 mbar (12 mca). All sets have special accessories for application in diffuse air aeration systems. Bases and couplings, mufflers, air filters, anti-vibration supports, pressure gauges, check valves, safety valves and acoustic insulation cabins.
Interconnection Tubing
B&F Dias is also a company specialized in the design and execution of interconnection piping between the blower house to the point of application (tank / pond / reactor / valve / channel) of the diffusion air aeration system. The dimensioning of this set is made considering the most important factors (air velocity, temperature, load losses) for the application in aeration systems in conjunction with air blowers. With diameters from ¾ “up to 60”, the B & F Dias interconnection pipes are all made with AISI 304 or 316 stainless steel connections and pipes. All correct and suitable fastening, anchoring and guide brackets are also included. (support), control and locking valves.
