Abstract:
Sediment accumulation in stormwater ponds will gradually degrade their hydraulic and water
quality functions. Landfill disposal is a common way of removing accumulated sediments.
However, given the vast number of deposits created, it is unsustainable. This research aims to
find possible applications for stormwater pond sediments and sludge via an examination of
sediment reuse studies and practices conducted across the globe. Several journal articles,
regulations, and guideline papers in Canada, the United States, Singapore, China, and Europe
were reviewed. Numerous essential issues are discussed, including sediment characterization,
reuse possibilities, potential sustainability, economic advantages, risk-based contamination
levels for different case studies, the significance of the regulatory framework, and treatment
procedures. After a series of lab tests, multiple beneficial compounds in noticeable
concentrations were found in the pond sediment from industrial and residential areas. They
have pharmacological, commercial, and industrial applications, including the manufacture of
insulating materials or medicinally and as an antioxidant in vegetable oils. Besides, biotech
products have also been developed and prepared with tremendous potential for use in the
field.
Furthermore, multiple leachable heavy metals are in sediments from stormwater ponds. A
few request attention and amendment before applying to land recovery(e.g. wastelands of the
mining industry). Ultimately, in developing construction materials, gypsum is an appropriate
binder, and the optimal percentage of gypsum in Bio-concrete is 10%. The strongest Bioconcrete should have an unconfined compressive strength of 35.93MPa. This article will give
an overview of sediment reuse strategies in Auckland Council as a first step towards
expanding current knowledge on the subject to achieve the goal of zero landfills by 2040.