1. Introduction
Food waste is the largest component of municipal solid waste
(MSW) in many urbanized societies (Lee et al., 2014). For example,
in Hong Kong, there is approximately 3200 tons of food waste produced
every day, constituting 35% of the total MSW (Li et al., 2013).
It was reported that food waste accounted for about 60% of the
total MSW collected and transported in China in 2006 (Zhang
et al., 2010). Food waste large in quantity may be troublesome
for handing, storage and transportation. There is a need to choose
some inexpensive and easy treatment to minimize the quantity of
food waste and also for satisfying discharge quality standards.