Wilo-Sevio AIR

Series description

Your advantages

Disc diffuser

  • High system efficiency owning to high ventilation capacity.
  • High flexibility in the system control through large control range of the air intake.
  • Greatest possible, process-specific activation density by taking different basin geometries into account.
  • High service life in municipal and industrial applications owing to different diaphragm material.
  • Low installation and conversion costs of the existing pipework.

Panel diffuser

  • Maximum possible energy efficiency through micro-perforation and large diaphragm surface.
  • High degree of system efficiency through increased dwell time of oxygen owing to installation close to the floor.
  • High process reliability through low-wearing and clogging-free membrane and integrated non-return valve.
  • High operational reliability due to sub-division into small aerator fields.
  • High flexibility in the system control through large control range of the air intake.

Tube diffuser

  • High flexibility in the configuration for the best possible system design owing to different port-to-port lengths and a large control range of the air intake.
  • High oxygen entry with less pressure loss owing to the special perforation of the membrane.
  • Long service life in municipal and industrial applications thanks to different membrane materials.
  • Easy installation - even for specified pipes.
  • High operational reliability, even in unventilated phases owing to the special pipe design.

Construction

Aeration system with tube, panel or disc diffusers

Application

For large to fine bubble aeration of aqueous media such as water, sewage or sludge, for the purpose of supplying oxygen and intermixing.

Equipment/function

A fan or compressor pumps air into the air distributor via the mains supply line. The air distributor distributes the air evenly to the individual ventilation lines and the aerators. The aerators distribute the air over the entire membrane surface and channel it into the fluid in the form of large to fine bubbles.

Scope of delivery

  • Mains supply line (for panel diffusers)
  • Air distributor with flange connection for the inlet pipe (for tube diffusers and disc diffusers)
  • Pipework
  • Drainage connection
  • Base support
  • Fixation material
  • Assignment plan for base support and aerator
  • Overview and layout of the individual components

Type key

 

Disc diffuser

E.g.:

Wilo-Sevio AIR D 218-ES-S-30

AIR

Aerator series

D

Disc diffuser

218

Diameter of the perforated area in mm

ES

Membrane material

  • ES = EPDM
  • ER = EPDM with reduced plasticizer
  • S = silicone

S

System including pipework and fixation material

30

Number of aerators

  
 

Panel diffuser

E.g.:

Wilo-Sevio AIR P 1975-P-S-30

AIR

Aerator series

P

Panel diffuser

1975

Perforated length in mm

P

Membrane material: Polyurethane

S

System including pipework and fixation material

30

Number of aerators

  
 

Tube diffuser

E.g.:

Wilo-Sevio AIR T 65+750-ES-S-30

AIR

Aerator series

T

Tube diffuser

65

Pipe diameter in mm

750

Perforated length in mm

ES

Membrane material

  • ES = EPDM
  • ER = EPDM with reduced plasticizer
  • S = silicone
  • P = polyurethane

S

System including pipework and fixation material

30

Number of aerators

Technical data

Disc diffuser

  • Diameter of perforated surface: 218 mm
  • Membrane surface area: 0.037 m²
  • Operating temperature air: 5 … 100 °C (depending on the membrane material)
  • Operating temperature pumped fluid: 5 … 40 °C
  • Nominal air intake: 1.5 ... 8 Nm³/h
  • Max. loading: 10 Nm³/h

Panel diffuser

  • Membrane surface area: 0.24 m² or 0.32 m²
  • Operating temperature air: 5 … 60 °C
  • Operating temperature pumped fluid: 5 … 40 °C
  • Nominal air intake: 2 ... 76 Nm³/h
  • Max. loading: 76 Nm³/h

Tube diffuser

  • Membrane surface area: 0.09, 0.135 or 0.18 m²
  • Operating temperature air: 5 … 100 °C (depending on the membrane material)
  • Operating temperature pumped fluid: 5 … 40 °C
  • Nominal air intake: 1 ... 12 Nm³/h
  • Max. loading: 20 Nm³/h

Materials

  • Membrane: EPDM (for tube diffusers and disc diffusers), PUR (for panel diffusers), other materials on request
  • Housing: Plastic
  • Pipework: Plastic or stainless steel
  • Drainage connection: Plastic
  • Base support: Stainless steel (for tube diffusers and disc diffusers), plastic (for panel diffusers)

Description/construction

The aeration system is composed of one or more aerator fields. An aeration system can consist of different diffuser fields (tube diffusers, panel diffusers or disc diffusers). An aerator field forms the basic unit here and consists of several components:

  • Inlet pipe (for panel diffusers)
  • Air distributor with connection flange for the inlet pipe (for disc diffusers and tube diffusers)
  • Base support for pipework
  • Pipework
  • Aerator
  • Drainage connection (in the case of disc diffusers and tube diffusers)

Fixation

Panel diffuser:

The fastening for the inlet pipe and the aerators are fastened directly to the basin floor. For a levelling, the aerators can optionally be fastened at the base via threaded rods.

Tube diffusers and disc diffusers:

Base supports are used to fully attach the pipework to the bottom of the basin. These also enable levelling of the aerator system.

Aerator

The supplied air is channelled into the fluid via the aerator in the form of large to fine bubbles. The air is distributed here via the entire perforated membrane surface and discharged through the membrane.

Downloads

REACH regulation

Edition 2019-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (853 kB)

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General overview 2019 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 74

PDF (42 MB)

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PDF: Wilo-Sevio AIR

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