Wastewater treatment plants - Activated sludge processes Ingestion-build-73073 BS EN 809 on Pumps

BS EN 809 on Pumps safety requirements is useful for:

with self-lubricating liner

ISO/TR 23276 provides an unambiguous algorithm for feature parameters PSm

BS EN 16087‑1 describes a method to determine the aerobic biological activity of growing media and soil improvers or constituents thereof by measuring the oxygen uptake rate (OUR)

Wastewater treatment plants - Activated sludge processes Ingestion-build-73073 BS EN 809 on Pumps1 Scope This European Standard specifies the performance requirements for treatment of wastewater using the activated sludge process for plants over 50 PT. Differences in wastewater treatment throughout Europe have led to a variety of systems being developed. This standard gives fundamental information about the systems; this standard has not attempted to specify all available systems. Detailed information additional to that contained in this standard