The ANAMMOX reactor under transient-state conditions: Process stability with fluctuations of the nitrogen concentration, inflow rate, pH and sodium chloride addition

▸ The performance of an ANAMMOX UASB under extreme stresses was investigated. ▸ The ANAMMOX reactor was susceptible to the alkaline wastewater. ▸ The efficiency of the process increased during load shocks. ▸ Electrical conductivity is a convenient signal for reactor control.