Abstract
With the excellent settle ability and high-porosity structure, aerobic granular sludge was regarded as one of the promising biotechnologies in wastewater treatment. Developed about one decade ago, it was exciting research work that explored beyond the limits of aerobic wastewater treatment in eliminating a wide range of pollutants from the aquatic environment. On account of recent researches for removing heavy metals such as Cu (II), Pb (II), Cd (II) and cadmium (VI), a supposition that using aerobic granular sludge as a biosorbent for heavy metals removal from wastewater is put forward. This paper sketches certain correlative characteristics of aerobic granules, including settle ability, extracellular polymeric substance and biological parameters, discussed its feasibility for heavy mental removal, and finally lists a series of preceding studies on treatment of heavy metals by aerobic granular sludge.
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