Biological treatment systems for fish processing wastewater - A review
Biological treatment systems for fish processing wastewater - A review
Date
2017
Authors
Parvathy, U.
Rao, K.H.
Jeyakumari, A.
Zynudheen, A.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Processing of fish involves mainly the application of various preservation techniques for retaining a
superior quality and enhancing shelf life. It also covers aspects like value-addition to produce a wide
variety of products. But during these fish processing operations large quantity of effluents, which
contain active microorganisms in various forms are being generated. Depending on the processing
operation involved, the level of contamination varies. This high-strength wastewater from fish
processing industry is of great concern world-wide and hence recently stringent liquid effluent
policies are being adopted. A number of treatment strategies at different levels are applicable for
reducing this risk, however biological treatment is one of the best options for fish processing wastewater,
rich in organic matter. Biological treatment includes both aerobic and anaerobic processes. Aerobic
processes such as activated sludge, lagoons, trickling filter and rotating biological contactor are
suitable for organics removal. The anaerobic processes can also remove 80-90% organics and
produce biogas. A combination of both anaerobic digestion and aerobic process is regarded as an
effective approach to reduce the contaminants in fish processing wastewater.
Description
Keywords
Citation
Nature Environ. & Pollut. Technol 16(2):447-453