This volume provides state-of-the-art information on soil-water
interactions in wastewater systems, characterization of wastewater,
modes of treatment, safety of wastewater use, water conservation
technologies involved in recycling of sewage in fish culture,
biogeochemical cycling bacteria and nutrient dynamics, ecosystem
resilient driven wastewater reclamation, bioremediation,
aquaponics, ecological integrity, culture practices of fish
farming, microbial food web phenomena, fish diseases, environmental
economics of wastewater, environmental risk assessment,
environmental law and regulations. Given its breadth of coverage,
the book will be useful to researchers, teachers, students,
administrators, planners, farmers and entrepreneurs interested in
the profitable use of wastewater in the wastes-into-wealth
framework of for the benefit of humanity, and in achieving the
targets for sanitation and safe wastewater reuse by 2030, specified
in the United Nations' Sustainable Development Goals. Concerns are
growing about the quality and quantity of fresh water, as severe
crises are expected in the near future. Climate change has further
worsened the strain on inland water resources, with its major
impacts on ecosystems and human life. It is most urgent to protect
and conserve inland water resources to maintain vital ecosystem
functions. Despite the immense nutrient potentials of wastewater in
terms of phosphorus, nitrogen and potassium and increasingly high
rates of urbanization-based wastewater generation, wastewater has
traditionally been overlooked as a resource. This produces a
threefold loss - environmental degradation, monetary losses from
fertilizers, and water. As a result, municipal wastewater offers a
win-win strategy for water conservation and environmental
protection, while also turning waste into wealth in the form of
fish biomass and allied cash crops. Wastewater-fed aquaculture
refers to a unique, integrated biosystem in which the wastes
generated by the first system are used by the next subsystem. In
wastewater-fed aquaculture biosystems, the organic wastes are
recycled into fish biomass mediated through a complex
microbial/autotrophic/heterotrophic food web mechanism.
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