@misc{9223164,
  abstract     = {{Eutrophication, caused by excessive accumulation of key nutrients such as nitrogen and phosphorus in water, is a major environmental problem that significantly affects water quality and aquatic ecosystems. This thesis project aims to evaluate different adsorption-based treatment methods that can effectively reduce the nutrient content of water.
Water samples were collected from various water sources such as wastewater streams and heavily polluted ponds/lakes in Skåne County for experimental tests. Although lake water was the target water, additional tests were conducted to evaluate the extent of phosphorus removal under various nutrient concentrations, including food waste residues, greywater, and blackwater. These water samples required for this were collected from the Recolab wastewater treatment plant in Helsingborg, Sweden. Two different materials were used as adsorbents in this study to identify the most effective one for nutrient removal. 
Water Samples were tested before the addition of adsorbents to find out the initial nutrients concentration in each case, and at certain time intervals after addition to determine the optimum nutrient removal time. Each test was performed in duplicate to reduce experimental error. However, since the initially used adsorbent A did not show sufficient efficiency for nutrient removal, treated residuals such as waste from softening process and waste stream from quick sand filtration at drinking water treatment plant (calcinated calcite pellets and mixture of calcium and iron-coated sand) were subsequently tested as alternative materials. These materials achieved nutrient removal efficiencies of up to 90% during the studies. The results indicate that residuals from drinking water treatment plants after certain treatment can be reused and offered as an effective and cost-effective solution for controlling nutrient levels in both natural and wastewater systems.}},
  author       = {{Prabhakaran Ranjini, Sisira}},
  issn         = {{1101-9824}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{TVVR 5000}},
  title        = {{Restorative Approaches for Eutrophic City Lakes with Emphasis on Nutrient Reduction Techniques}},
  year         = {{2026}},
}