In modern industrial wastewater treatment, few components are more important than how clean water leaves the system. Whether you are running a DAF system, an SBR, or a full biological wastewater treatment plant, the final decanting stage must be precise, reliable and low maintenance.
Aerofloat’s Air Lock Syphon Decanter was developed to solve exactly that problem, delivering controlled effluent discharge without complex mechanics, expensive automation or high maintenance overheads.
What is an Air Lock Syphon Decanter?
The Air Lock Syphon Decanter is a proprietary Aerofloat device designed to remove clarified water from treatment reactors such as SBR tanks, anoxic tanks and final polishing tanks.
Unlike traditional decanters that rely on multiple moving parts, motors or weirs, this system uses gravity, air control and siphon hydraulics to achieve precise and repeatable water removal.
How the decanter operates
The process follows a simple, elegant sequence:
- Air release - An actuator opens and releases the air trapped inside the decanter pipework.
- Gravity flow begins - Once the air is released, clean water flows into the U-tube and down toward the effluent tank under gravity.
- Siphon activation - The actuator closes, creating a sealed system. This triggers a siphon effect that steadily draws clarified water through the decanter and into the effluent tank.
- Controlled discharge - Water flows through the manifold and into the downstream wastewater treatment system or reuse tank with no need for pumps.
This allows the system to precisely remove treated water without disturbing sludge layers or biological activity.
Why this matters in wastewater treatment
Decanting is one of the most failure-prone steps in many wastewater treatment systems. Mechanical decanters clog. Weirs drift out of level. Pumps fail.
The Air Lock Syphon Decanter eliminates many of these risks because:
- It has almost no moving parts
- It requires minimal maintenance
- It does not rely on electric drives
- It delivers consistent effluent quality
For operators managing industrial effluent treatment, trade waste systems or recycling water plants, this reliability is critical.
Lower capital cost, higher reliability
The decanter is built from schedule 80 pipework and standard pneumatic components, making it inexpensive to manufacture and install.
This means:
- Lower CapEx for clients
- Faster installation
- Fewer spare parts
- Reduced long-term maintenance
For large-scale water treatment plants, these savings compound over decades of operation.
Designed for modern wastewater plants
The Air Lock Syphon Decanter integrates seamlessly into:
- SBR wastewater treatment
- Biological treatment plants
- Industrial wastewater treatment systems
- Effluent polishing and reuse systems
It is one of the key components that allows Aerofloat to deliver high performance water purification technology while keeping systems simple, robust and cost effective.
A smarter way to release clean water
In an industry where complexity often increases cost and risk, Aerofloat’s Air Lock Syphon Decanter shows how intelligent hydraulic design can outperform mechanical systems.
It is a small component that delivers a big impact, ensuring clean water leaves the site safely, consistently and without interruption.
