Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment
- 1 April 1980
- journal article
- research article
- Published by Wiley in Biotechnology & Bioengineering
- Vol. 22 (4), 699-734
- https://doi.org/10.1002/bit.260220402
Abstract
In recent years considerable effort has been made in the Netherlands toward the development of a more sophisticated anaerobic treatment process, suitable for treating low a strength wastes and for applications at liquid detention times of 3–4 hr. The efforts have resulted in new type of upflow anaerobic sludge blanket (UASB) process, which in recent 6 m3 pilot-plant experiments has shown to be capable of handling organic space loads of 15–40 kg chemical oxygen demand (COD)·m−3/day at 3–8 hr liquid detention times. In the first 200 m3 full-scale plant of the UASB concept, organic space loadings of up to 16 kg COD·m−3/day could be treated satisfactorily at a detention times of 4 hr, using sugar beet waste as feed. The main results obtained with the process in the laboratory as well as in 6 m3 pilot plant and 200 m3 full-scale experiments are presented and evaluated in this paper. Special attention is given to the main operating characteristics of the UASB reactor concept. Moreover, some preliminary results are presented of laboratory experiments concerning the use of the USB reactor concept for denitrification as well as for the acid formation step in anaerobic treatment. For both purposes the process looks feasible because very satisfactory results with respect to denitrification and acid formation can be achieved at very high hydraulic loads (12 day−1) and high organic loading rates, i.e., 20 kg COD·m−3/day in the denitrification and 60–80 kg COD·m−3/day in the acid formation experiments.Keywords
This publication has 6 references indexed in Scilit:
- Anaerobic treatment of methanolic wastesWater Research, 1979
- Dynamics of liquid flow in an up‐flow reactor‐used for anaerobic treatment of wastewaterBiotechnology & Bioengineering, 1978
- Anaerobic digestion of raw sewageWater Research, 1971
- Investigations on a pilot-plant contact digester for the treatment of a dilute urban wasteWater Research, 1971
- Developments in Anaerobic Stabilization of Organic Wastes - The Two-Phase ConceptEnvironmental Letters, 1971
- Anaerobic digestion—IV. The application of the process in waste purificationWater Research, 1969