Wastewater Treatment in the USA
The wastewater treatment industry is one of the largest producers of biogas in the US. However, whilst both aerobic and anaerobic systems are used for treatment, there are only about 2,000 plants that treat organic waste using anaerobic digestion; this compared to over 10,000 in Europe.
Organics Technical Paper Presentation at the European Wastewater Management Conference
Organics took advantage of the opportunity to present a poster that presented our engineering capabilities in the area of thermal ammonia stripping. This patented technology has been successfully employed on several sites to reduce concentrations of ammoniacal nitrogen in wastewater, in particular in landfill leachate and anaerobic digestion systems.
Stripping Ammonia in Anaerobic Digesters
GIVEN its high population density, coupled with the demanding environmental standards enforced by the Environmental Protection Department, it is not surprising that Hong Kong served as the incubator for our process to remove ammonia from wastewater. What has resulted is a novel thermal ammonia stripping technology, which has low operating costs, high standards, and a small footprint.
Since 1997, the technology has been applied to both leachate from landfill sites, as well as the side-stream flows from an anaerobic digester (AD). While highly focused on the needs of Hong Kong, the technology is gaining momentum in other countries, where environmental compliance is a serious issue to address. It is also moving from leachate cleanup applications into AD.
To many engineers not involved with AD, the problems caused by ammonia may come as a surprise. It is well known that ammonia is toxic to fish and humans (sniff that floor cleaner if in doubt), so it should not be unexpected that many bacteria are similarly stressed.