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Treatment Wetlands for Environmental Pollution Control (Hardcover)
Loot Price: R3,641
Discovery Miles 36 410
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Treatment Wetlands for Environmental Pollution Control (Hardcover)
Series: GeoPlanet: Earth and Planetary Sciences
Expected to ship within 10 - 15 working days
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The aim of this book is to present an overview of the state of the
art with regard to the function, application and design of TWSs in
order to better protect surface water from contamination.
Accordingly, it also presents applications of constructed wetlands
with regard to climatic and cultural aspects. The use of artificial
and natural treatment wetland systems (TWSs) for wastewater
treatment is an approach that has been developed over the last
thirty years. Europe is currently home to roughly 10,000
constructed wetland treatment systems (CWTSs), which simulate the
aquatic habitat conditions of natural marsh ecosystems; roughly
3,500 systems are in operation in Germany alone. TWSs can also be
found in many other European countries, for example 200 - 400 in
Denmark, 400 - 600 in Great Britain, and ca. 1,000 in Poland. Most
of the existing systems serve as local or individual household
treatment systems. CWTSs are easy to operate and do not require
specialized maintenance; further, no biological sewage sludge is
formed during treatment processes. As TWSs are resistant to
fluctuations in hydraulic loads, they are primarily used in rural
areas as well as in urbanized areas with dispersed habitats, where
conventional sewer systems and central conventional wastewater
treatment plants (WWTPs) cannot be applied due to the high costs
they would entail. TWSs are usually applied at the 2nd stage of
domestic wastewater treatment, after mechanical treatment, and/or
at the 3rd stage of treatment in order to ensure purification of
effluent from conventional biological reactors and
re-naturalization. New applications of TWSs include rainwater
treatment as well as industrial and landfill leachate treatment.
TWSs are well suited to these fields, as they can potentially
remove not only organic matter and nitrogen compounds but also
trace metals and traces of persistent organic pollutants and
pathogens. Based on the practical experience gathered to date, and
on new research regarding the processes and mechanisms of pollutant
removal and advances in the systems properties and design, TWSs
continue to evolve.
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