ClearFox® SBR Industrial Systems

The ClearFox® SBR Industrial Systems represent a cost effective and highly flexible industrial biological wastewater treatment process. The SBR technology can be adapted and applied to a wide range of industrial wastewaters. It can provide standalone biological treatment or can be used in conjunction with other process technologies such as the ClearFox® DAF. We provide complete SBR solutions for flowrates between 1 m³/hr to 400 m³/hr.


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SBR Industrial Systems

Advanced industrial biological wastewater treatment

SBR Industrial Systems equipment can easily be configured to be installed in existing tanks onsite, or to fit within any new tank dimensions. The batch process technology can also achieve extremely high effluent standards. This makes SBR a good choice for industries that need to achieve compliance with strict discharge standards.

Integration of equipment with existing site-built tanks makes the SBR process a very cost effective process technology with regards to CAPEX. Also, by using airlift technology with our SBR systems and intermittent aeration, the OPEX is far lower than other processes such as MBR and MBBR.


There are many advantages to implementing a ClearFox® industrial SBR system for treatment and cleaning of your effluent. In addition to low CAPEX and OPEX, the following advantages exist:

  • SBR equipment in kit form to install into any tank configuration (above or below ground)
  • SBR Industrial Systems can be installed in Concrete / GRP / Plastic tanks
  • Retrofitting kits can also be installed into existing tanks for upgrade works
  • Full installation by the ClearFox® Team anywhere in the world
  • A low-cost, high-quality solution for tank manufacturers
  • Complete support from ClearFox® for engineering, design and installation
  • Effluent quality guarantees
  • SBR Industrial Systems is a controlled process as wastewater is treated in batches – allowing for extremely high effluent quality
ClearFox SBR system
ClearFox SBR underground installation
  • Any effluent standard can be achieved with additional chemical dosing (e.g. P elimination), UV treatment (disinfection) etc. all easily added via the PLC
  • Designed according to DIN EN 12566 and DWA design criteria
  • Market leading in treatment efficiency and low power consumption
  • Simple modification of the process via PLC if necessary


How does a ClearFox® SBR Industrial System function?

SBR refers to sequential batch reactor. This technology is a controlled wastewater treatment process. Batches of wastewater undergo treatment in sequence. This control process allows each batch of wastewater to undergo treatment for any required time frame. This enables the achievement of any level of treatment as a result.

In brief, the typical steps in the SBR Industrial Systems process are as follows:
The activated sludge treatment plant with SBR has an upstream coarse separator that serves as storage for the primary and secondary sludge and to buffer the inlet water. Sludge filling and Clearwater extraction are completed by means of airlift pumps. The plants control system recognises four main states in the Normal cycle.

ClearFox SBR controll unit

The SBR Industrial Systems Cycle is variable and changes can be made to the duration, frequency and arrangement of the phases.

  1. Filling phase: the sewage enters the first chamber and any large solids are retained. The filling pump then conveys waste water into the second chamber which is the biological reactor.
  2. Purification/Aeration stage: The waste water is circulated in the SBR reactor using air fed by the membrane plates and the bacteria are supplied with oxygen, thus supporting the actual biological treatment by microorganisms. Short aeration and non-aeration stages (for denitrification) alternate and are controlled by the computer software. An activated sludge grows with millions of microorganisms which completely break down the wastewater.
  3. Sedimentation/settling stage: A rest phase follows. The activated sludge sinks (sedimentation) to the bottom of the water column. This allows a clarified water zone to form at the top of the reactor chamber.
  4. Clearwater extraction stage: A Clearwater pump conveys the purified waste water that remains above the “Clearwater discharge point” to the plant outlet, lowering the water level in the reactor. The settled activated sludge is then transferred back into the first chamber and the process repeats with the next batch of wastewater.

A complete purification cycle takes approximately 7 hours

Energy-saving cycle: The purification cycle programme continues running unabated, but with a shorter aeration phase, which reduces the amount of energy required. Depending on the inlet quantity to the prechamber, the programme then decides fully automatically, whether the energy- saving cycle should continue, or whether it should switch back to normal operating mode.

wastewater treatment process

Read More About ClearFox® SBR Projects

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