While suspended solids can be as high as 120 000 mg/L, in some wastes they almost completely absent. The biochemical oxygen demand (BOD) ranges from as low as 100 mg/L to as high as 100 000 mg/L. The characteristics of food processing wastewater are extremely varied. Wang, in Handbook of Water and Energy Management in Food Processing, 2008 27.1 Introductionįood processing wastewaters are generated mainly from food-processing industries, food services and retail establishments. This chapter will provide strategies that can be used by industries to enhance the use of environmentally friendly technologies for food processing and enhance value addition. Environmental concerns related to food processing that require consideration, such as the use of fossil fuels and the disposal of residual matters of food processing, will have to be reviewed. The need for processed food is expected to increase even further when the global population increases further. The increase in global population during the past two centuries has made food processing one of the most deliberated subjects in the food value chain.
Some methods of food processing have been challenged in the recent years but food processing cannot be circumvented entirely because of the ever-growing human population that has to be nourished. Developing food processing technologies that are environmentally friendly and efficient can substantially contribute to the food value chain and to mitigating the energy crisis that the southern African region is experiencing. Alamu, Ackson Mooya, in Smart Technologies for Sustainable Smallholder Agriculture, 2017 Abstractįood processing and value addition are key steps in the food value chain.
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