Treatment of phosphorus-rich water by fly-ash material
Zhang, Wenqi (2018)
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Julkaisun pysyvä osoite on
The excessive amount of nutrients – nitrogen and phosphorus, in the aquatic environment can lead to the rapid growth of plants and algae. As a consequence, the eutrophication of the water body can occur, which is an ageing phenomenon and is usually observed in lakes, reservoirs and some rivers. The eutrophication of water is a serious environmental problem and may affect various industrial sectors, agriculture as well as tourism. In the study, the treatment efficiency of phosphorus-rich water by fly ash was examined. The wood fly ash was collected from Kiuruvesi in Finland (the outdoor stack of district heating plant) and utilized in jar-test experiments. To determine the ability of fly ash for phosphorus removal, various process conditions were tested, including fly ash dose, initial concentration of phosphorus and solution pH. Additionally, the efficiency of nitrogen and DOC removal was analysed.