Sökning: "VA-teknik"
Visar resultat 21 - 25 av 88 avhandlingar innehållade ordet VA-teknik.
21. Assessment of stormwater and snowmelt quality based on water management priorities and the consequent water quality parameters
Sammanfattning : Stormwater and snowmelt pollution contributes to degradation of quality of the receiving waters. For assessing such impacts, it is effective to focus on specific causes of degradation, as done in this study of the quality of stormwater and snowmelt discharges into the receiving waters serving for supply of raw drinking water and water-based recreation. LÄS MER
22. Suspended solids and indicator bacteria in stormwater runoff : Sources of bias in field measurements
Sammanfattning : Stormwater quality monitoring and control is a prerequisite for sustainable water resources management in urban areas. Stormwater monitoring programs are based on general water sampling guidance and, in the absence of standard procedures, employ various sampling and analytical methods. LÄS MER
23. Enhancement of stormwater quality in grass swales : Removal and immobilisation of metals
Sammanfattning : .... LÄS MER
24. Trace metals in swale soils and sediments from gully pots and stormwater management ponds
Sammanfattning : Three commonly used drainage system components, with considerably different characteristics and roles in stormwater management, were studied and reported on in this thesis: (i) grass swales, (ii) gully pots (GPs), and (iii) stormwater management ponds. With time, solids and associated pollutants accumulate in these components, and regular maintenance is needed to ensure that their design functions, including protection of the environment, are sustained. LÄS MER
25. Microalgae at wastewater pond treatment in cold climate : an ecological engineering approach
Sammanfattning : Three types of wastewater ponds in subarctic climates were investigated, each of them highly dependent on microalgae. They were fellingsdams, i.e. LÄS MER