Ecotoxicity and pollutant concentrations of wastewater from mineral processing
Ruipérez, Paula (2013)
Tampereen ammattikorkeakoulu
2013
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2013102916402
https://urn.fi/URN:NBN:fi:amk-2013102916402
Tiivistelmä
In this project, the ecotoxicity and pollutant concentration of wastewater from mineral processingwas studied. The wastewater from the process contains high amounts of heavy metals and sulphates. Wastewater treatment was tested using three different Biological systems. The efficiency of the three systems and the conditions to improve the efficiencywas tested. Theecotoxicity and pollutant concentration were analysed in order to show how the pollutants can be removed by the systems. This study contains the
preliminaryresults of the treatment as well the wastewater was management options in order to obtain the best results in pollutant removal. Two test runs were done. In the first run, wastewater was used to check how the microorganisms can be sustained in the presense of wastewater. In the second test run, the systems were first enriched with nutrient water to sustain and grow the microorganism population in order to reduce the water toxicity. After that, the wastewater was added periodically into the systems. This did not, however, improve the efficiency of the systems.
The biggest problem in the wastewater was the low pH due to high sulphate concentration that makes this water also difficult to be treated by biological systems. The results of the study show that pretreatment is needed before biological system can be used to treat this wastewater.
preliminaryresults of the treatment as well the wastewater was management options in order to obtain the best results in pollutant removal. Two test runs were done. In the first run, wastewater was used to check how the microorganisms can be sustained in the presense of wastewater. In the second test run, the systems were first enriched with nutrient water to sustain and grow the microorganism population in order to reduce the water toxicity. After that, the wastewater was added periodically into the systems. This did not, however, improve the efficiency of the systems.
The biggest problem in the wastewater was the low pH due to high sulphate concentration that makes this water also difficult to be treated by biological systems. The results of the study show that pretreatment is needed before biological system can be used to treat this wastewater.