There is a multitude of different approaches to reduce the nutrient contamination of water bodies. A lot of these approaches are actually very efficient but also very costly. Hence the goal should be to develop such system that is also economical. Clearas Water Recovery based in Missoula, MT, USA has developed the Advanced Biological Nutrient Recovery system (ABNR). The ABNR system is an innovative and sustainable system for industrial as well as municipal wastewater streams.
Sustainable water management is an important topic and it is attracting more and more attention from governmental agencies as well as industrial parties. The importance of the topic has been highlighted in recent years through both climatological and environmental aspects. The increased levels of nutrient loading in discharge effluents are impairing the water quality and potentially lead to eutrophication. This will change the constitution of the water bodies dramatically. Worldwide water consumption is doubling every 20 years. Today, there is not enough clean, useable water to satisfy demand. Water contamination from industrial, municipal and agricultural wastewater streams are further contributing to water scarcity. The following facts were published by Water.org.
These facts illustrate the need for efficient wastewater treatment systems. An additional problem arises from the excess sludge generation associated with traditional nutrient reduction treatments. Due to the elevated introduction of nutrients the need for chemicals to neutralize these is increasing. These chemicals then in turn have to be separated from the excess sludge. It would make sense to market the nutrient laden sludge and would also make recycling much easier if there weren’t that many chemicals in the sludge.
Author: Rick Johnson, CLEARAS Water Recovery
Co-Authors: Caroline Hoffmann, MICRODYN-NADIR GmbH, Pedro Rodriguez, ECOTEC
Article published in: FuturENVIRO April 2015