The Activated Sludge Plant is the heart of most recently built treatment plants for municipal sewage treatment and many industrial effluent plants. The activated sludge plant must maintain a careful balance between the biologically active ‘bugs’, the amount of dissolved oxygen, and the load or suspended solids. The use of instrumentation is vital to optimising this process.

The ASP process involves the addition of air (oxygen) this is the most energy hungry part of the sewage treatment process and therefore benefits the most from our accurate and reliable measurement devices. Dissolved Oxygen monitoring has been a key measurement both for energy saving and for maintaining a balanced process, supplementary measurements such as Suspended Solids, pH, Redox/ORP, and Temperature combine to facilitate sophisticated process control.