At many wastewater treatment plants (WWTPs), rapid sand filters are used as polishing step before the wastewater is released to the recipient. Thus, after time, the media gets clogged and the filters are regularly backwashed. In case of poor backwashing, the next filtration cycle will begin with an inefficient filter. Agglomerates of media grains, flocculation […]
Författare Dimitrova, I., Dabrowska, A.
Nyckelord (Keyword) Rapid sand filter; chemical rehabilitation; mud balls; costs
Stormwater is frequently contaminated with organic pollutants such as polycyclic aromatic hydrocarbons (PAHs), phthalates and alkylphenols emitted from traffic and building materials. Filters with adsorbing materials have the potential to remove dissolved, colloidal and particulate organic pollutants from stormwater. The aim of this research project is to investigate how effectively filter materials remove dissolved organic […]
Agriculture constitutes the largest economic sector and professional occupation in Chad, and is undergoing rapid changes due to processes of population increase, institutional reforms, conflicts in neighbouring countries, increasingly globalized trade networks, and environmental changes. But despite their importance for livelihoods and economic growth, the specific patterns and drivers of change in the agricultural sector […]
Författare Erik Nilsson
Nyckelord (Keyword) Crop production, Chad, water, livelihoods, data management
This study employs extreme value analysis to estimate 10-, 50-, and 100-year return levels of wave runup and annual dune erosion on the basis of 40 years simulated data from Angelholm Beach, Sweden. The offshore wave climate is computed with the SMB-formulations and propagated nearshore with the SWAN wave model. The runup is computed with […]
Författare Caroline Hallin, Nader Tajvidi, Björn Almström, Magnus Larson, Hans Hanson
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