Adsorption of Phosphorus from Aquatic Environment onto Wood-Based Fly Ash
Chen, Wanqing (2018)
Savonia-ammattikorkeakoulu
2018
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2018103016372
https://urn.fi/URN:NBN:fi:amk-2018103016372
Tiivistelmä
Lake eutrophication is a water pollution phenomenon caused by the excessive content of nitrogen and phosphorus and is a serious environmental problem, both in Finland and China. Therefore, fundamental aspects related to eutrophication of natural waters are addressed in the presented work.
In this thesis, the efficiency of phosphorus removal from natural lake water was analysed. As an adsorbent, the wood-based fly ash was utilised. Laboratory experiments were performed with various process parameters to determine the optimum conditions of phosphorus removal and to verify the adsorbent suitability for treatment nutrient-rich waters and wastewaters. Specifically, tests with different fly ash dose, the initial concentration of phosphorus and various solution pH were conducted using the jar-test method. Removal of nitrogen and DOC by fly ash was also examined.
In this thesis, the efficiency of phosphorus removal from natural lake water was analysed. As an adsorbent, the wood-based fly ash was utilised. Laboratory experiments were performed with various process parameters to determine the optimum conditions of phosphorus removal and to verify the adsorbent suitability for treatment nutrient-rich waters and wastewaters. Specifically, tests with different fly ash dose, the initial concentration of phosphorus and various solution pH were conducted using the jar-test method. Removal of nitrogen and DOC by fly ash was also examined.