Abstract

The nitrogen element in the wastewater from various sources, like industries, domestics, and municipalities, triggers eutrophication. Industrial wastewater containing heavy metals and toxicity compounds requires a proper wastewater treatment system in order to reduce pollution in the environment. Therefore, the biological nitrogen removal technology, namely nitrification-denitrification, was implemented in the wastewater treatment plants (WWTPs). However, an advanced alternative technology called partial nitritation and anaerobic ammonium oxidation (PN/A) was implemented to overcome the conventional technology bottleneck. Anammox process conducted by the anammox microorganism has been established due to its high efficiency of nitrogen removal in the high ammonium-loading wastewater. The anammox technology decreases the capital cost by reducing carbon and oxygen consumption. Additionally, the production of the sludge can be reduced, which subsequently saves space for the operation and energy for aeration. Therefore, anammox application in industrial wastewater may contribute many advantages in terms of cost, energy, and sustainable wastewater treatment system. However, there are several challenges in implementing the PN/A in industrial wastewater due to the high carbon to nitrogen (C/N) ratio, inhibition by nitrite oxidizing bacteria (NOB), and low activity at low temperature. Therefore, this chapter discusses the potential solution to overcome the challenges that may be faced by the anammox process in the industrial wastewater treatment system.

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