Quadbeam has the perfect solutions for the Wastewater Industry

What if we could offer you self-compensating process control sensors, which gave you much improved control and reliability? Your current single and dual beam turbidity sensors are great, but once you have tried Quadbeam’s answer, you will never look back. Quadbeam offers us a range of applications, focused on accuracy and better control of your processes.

In the Waste Water Industry, these are vital elements.

Quadbeam promotes these key benefits:

• Improved process control
• Reduced costs
• Long-lasting components
• Highly repeatable, reliable and accurate
• Controls de-sludging process

The various Applications where their waste water products can be utilised are:

• Polymer dosing control for DAF plants
• MLSS measurement
• Monitoring influent and overflow streams
• Return/Waste Activated Sludge
• Final water release monitoring.
• Clarifiers

Let’s take a step back and ponder on what wastewater treatment is all about and why it’s so important to have accurate systems in place.

The stages of wastewater treatment:

• Influent screening to remove plastic and other indigestible solids
• Separating heavier particles from the liquid in the primary sedimentation tank – heavier particles sink to the bottom of the tank (the sludge blanket) while the supernatant (surface overflow effluent) rises to top
• The sludge must be emptied at regular intervals to make room for more de-sludging process
• A sludge pump can prove useless – either it allows overflow or will pump out water with the sludge
• Knowing the level of the sludge blanket is paramount for controlling the de-sludging process

This is where Quadbeam comes in …

• One can control the de-sludging process by:
• Either using Quadbeam’s MXD73, MXD75 or MSSD20 transmitters with Series 20 sensors
• Using two of these – reason being that with a single sensor installation, you run the risk of too much sludge being discharged and the sludge blanket will be lost
• Using two Series 20 sensors, they rally with one another to ensure the blanket is always maintained
• Further factors which affect the sludge blanket formation
• Settling rate
• Influent rate
• Wastewater source and components
• Downstream solids concentration requirements
• Blanket height vs solids concentration correlation

Other areas which must be taken into account are:

• Whether the sludge blanket is to be used for thickening (generally underflow solids concentration can be 0,5% to 1,5%) or
• Or, to be used for digesting (2,0% to 5,0% solids)

These factors are relevant for the primary clarifier process.

As the influent to a primary clarifier is raw or screened wastewater mixed with recycled effluents from the plant, it is important to check. Check that your influent flows are not extreme and causing disruptions in the sludge blanket accumulation.

For more information around this topic and the products offered by Quadbeam, contact our offices today.