Sökning: "Mark- och vattenteknik"

Visar resultat 6 - 10 av 163 avhandlingar innehållade orden Mark- och vattenteknik.

  1. 6. Hydrodynamic control of retention in heterogeneous aquifers and fractured rock

    Författare :Hua Cheng; Vladimir Cvetkovic; Chin-Fu Tsang; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aquifer; Fracture; groundwater; First-order solution; Monte-Carlo simulation; Nu-clear waste; Heterogeneity; Retention processes; Matrix diffusion; Prediction; Evaluation; Travel time; Flow rate; ; Water engineering; Vattenteknik;

    Sammanfattning : In this thesis, fluid flow and solute transport in heterogeneous aquifers and particularly in frac-tured rock have been investigated using Lagrangian Stochastic Advective-Reaction (LaSAR) framework. The heterogeneity of the aquifer structure or fracture configuration, as well as the various reaction/retention processes have been considered in the modelling approach. LÄS MER

  3. 7. Pharmaceutical compounds; a new challenge for wastewater treatment plants

    Författare :Maja Dlugolecka; Elzbieta Plaza; Bengt Hultman; Nicklas Paxéus; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; activated sludge; biodegradation; granular activated carbon GAC ; membrane bioreactor MBR ; pharmaceutical compounds; wastewater; Water engineering; Vattenteknik;

    Sammanfattning : Analytical analyses conducted at the Himmerfjärden WWTP (285.000 PE connected) identified 70 pharmaceutical compounds belonging to different therapeutic classes. Such organic micropollutants at low detected concentration range of µg - ng l-1 did not affect the treatment processes at WWTP. LÄS MER

  4. 8. Sharing Water in Africa : Comparative Analysis of the Limpopo and Orange-Senqu River Basins in SADC and the Juba and Shabelle River Basins in the Horn of Africa

    Författare :Abdullahi Elmi Mohamed; Jan-Erik Gustafsson; Ashok Swain; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Shared water; international river basins; river cooperation; water resources; conflicts; SADC and Horn of African regions; Land and Water Resources Engineering; Mark- och vattenteknik;

    Sammanfattning : As water resources management becomes increasingly critical and many countries in the arid and semi-arid regions are increasingly forced to consider the possibilities of utilizing the water that is available in international rivers. Thus, the concerns relating to the use of international waters in shared rivers are becoming more important. LÄS MER

  5. 9. Groundwater chemistry and recharge rate in crystalline rocks : case study from the Eritran highland

    Författare :Estifanos Haile; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crystalline aquifers; groundwater chemistry; rainwater chemistry; chloride mass balance; flouride; Eritrea; Water engineering; Vattenteknik;

    Sammanfattning : .... LÄS MER

  7. 10. Arsenic in Alluvial Aquifers in the Meghna Basin, Southeastern Bangladesh : Hydrogeological and Geochemical Characterisation

    Författare :Md. Aziz Hasan; Prosun Bhattacharya; William Burgess; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alluvial aquifer; groundwater; arsenic mobilisation; geology; Meghna basin; Bangladesh; Water engineering; Vattenteknik;

    Sammanfattning :  Elevated levels of arsenic (As) in Bangladesh groundwater has emerged as a massive calamity exposing a large population to the risk of As toxicity from drinking water sources and agricultural products. Holocene alluvial aquifers in the delta- and flood-plains of the Ganges-Brahmaputra- Meghna (GBM) river systems are severely affected by high levels of As in groundwater. LÄS MER