As an independent, specialist consultancy, Aqua Enviro have a highly experienced team with a proven track record of providing expertise to clients in the water, waste, industrial and agricultural sector.
We can provide comprehensive, tailored services which combine a mix of technical knowledge and practical applicationFind out more
Aqua Enviro’s in-house laboratory provides commercial analytical services for water, wastewater, biosolids and organic waste.
We offer unrivalled turnaround times, accurate and quality data, extensive technical expertise and support from our team of highly qualified professionals.Find out more
Aqua Enviro provide specialist technical training courses and conferences for the water, wastewater and organic waste industry.
With particular focus on operational experience and practical solutions our events provide a forum for practitioners, managers and researcher to meet and discuss the challenges facing the industries.Find out more
Laboratory Analysis - Zahn Wellens / EMPA Readily Biodegradable Assessment
Aqua Enviro utilise three main techniques for assessing feedstocks for aerobic treatment. With these being carbonaceous and nitrification inhibition testing, Zahn Wellens / EMPA RBCOD assessment and laboratory trials using sequence batch reactors.
The Zahn Wellens test is usually the 2nd stage of assessment, comprising of a batch test whereby a known quantity of test material is added to a continually mixed and aerated vessel, containing seed sludge from a suitable activated sludge process. COD degradation is recorded over the 28 day test period.
A report of results will be produced which will show:-
1kg or 1L of test material is required for the testing.
Synonyms / keywords: OECD 302B, EMPA, Zahn Wellens, BCOD, biodegradable chemical oxygen demand, Aerobic biodegradability, aerobic biomass treatability, activated sludge, % COD degradation
8 Appleton Court, Calder Park, Wakefield, WF2 7AR, UK
Consultancy and Laboratory services: + 44 (0)1924 242255
Conferences and Training enquiries: +44 (0)1924 257891
SUEZ Advanced Solutions UK Ltd trading as Aqua Enviro