Activated sludge is one of the most widely used wastewater treatment processes available today, and dissolved oxygen is a key parameter for ensuring that the microorganisms vital to a successful process remain viable. Oxygen is introduced into wastewater along with microorganisms to develop a biological floc, which reduces the organic content of the wastewater. The Hach LDO probe applies luminescent technology to continuously monitor dissolved oxygen. The instrument controller can alert staff immediately of any changes in dissolved oxygen levels, and can be integrated with a variable frequency drive or PLC system to control the amount of oxygen injected into the system.
