The Blog

Controlling the amount of microorganisms in the activated sludge process is critical to performance.  The best way to do this is to maintain a target Solids Retention Time (SRT).  The target for your ...

As a rule of thumb, microorganisms need, pound for pound, 100:5:1 for BOD:N:P.  That means for every 100 lb of BOD, they need 5 lb of nitrogen, and 1 lb of phosphorus.  “Normal” domestic wastewater ty...

The activated sludge process is composed of five systems: a reactor/tank, aeration system, clarifier, RAS system, and WAS system.  The reactor provides the physical space for reactions to occur.  The ...

The Activated Sludge Process is a technology that uses the natural activities of microorganisms to remove dissolved pollutants like BOD, ammonia, and phosphorus.  Microorganisms are brought into conta...