Removing solids, oil and heavy metal from your foul effluent wastewater is an integral part of your operations process. Get it right, and you remove more solids and contaminants first time round, saving money on wasted chemicals, and mitigating their impact on the environment.

The SEM I-DAF system can help you do just that.

How it works?

Our effluent treatment specialists visit your site, review your current wastewater process train, and perform a bench-test to establish the optimum chemical treatment addition.

Once we have a full understanding of your requirements, we engineer the most efficient and cost-effective process to deliver them.


The SEM I-DAF system takes tried and tested Dissolved Air Flotation (DAF) technology to the next level.

Our intelligent autonomous DAF solution maximises the removal of:

  • Total Suspended Solids (TSS)
  • Biochemical Oxygen Demand (BOD)
  • Chemical Oxygen Demand (COD)
  • Heavy metals
  • Fats, oils and greases (FOG).

Environmentally responsible

Our DAF technology processes foul effluent that would otherwise be treated off-site. Removing contaminants at source allows the treated effluent to be discharged to either foul sewer or watercourse.

Less processing off-site means fewer tankers on the road, reducing both your OPEX and your carbon footprint. Treated water can then be re-purposed, making for a more sustainable practice.

Our I-DAF is one of the most energy efficient systems on the market today.

Applicable markets

Back to technology