SHARON is a robust and cost effective system for the removal of nitrogen from wastewater. The process is used for treatment of high strenght ammonia liquors such as sludge dewatering  liquors and the liquid fractionof pig manure.

Contrary to conventional nitrification/denitrification systems, nitrite, and not nitrate, is the final product of nitrification in a SHARON system. This results in significant savings.  As the SHARON process has no sludge retention, the process is extremely stable and requires minimal operator attention.

When compared to traditional nitrification/denitrification the savings are:

• 25 % on energy, due to lower oxygen demand;
• 40 % on carbon source for denitrification;
• 30 % on sludge production.

More than a decade of full scale operational experience is available, with plants in operation in the Netherlands, United Kingdom, Sweden and New York (USA). SHARON plants are in preparation for Geneva (Switzerland) and Paris (France).