Essays about: "Subsurface drainage"

Showing result 1 - 5 of 8 essays containing the words Subsurface drainage.

  1. 1. The role of agricultural drainage in controlling the effectiveness of two-stage ditches in Sweden

    University essay from SLU/Dept. of Soil and Environment

    Author : Neerajaa Nagarajan; [2021]
    Keywords : Subsurface drainage; Absorbance flourescence spectroscopy; Suspended sediments; NO3N; NH4N; PO4P; TP values; DOM indices;

    Abstract : Increased agricultural activities are causing eutrophication in downstream water bodies. To mitigate nutrient leaching from cropland, various in-field and edge-of-field practices have been implemented. READ MORE

  3. 2. Spatial and temporal changes in microbial community composition in a full-scale woodchip bioreactor for treating mine water

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Felicia Wallnäs; [2020]
    Keywords : ;

    Abstract : Incomplete detonation of nitrogen-based explosives can lead to abundant levels of nitrate in mine groundwater. The possibility of reducing nitrogen levels from the wastewater through denitrification, anammox and DNRA has been investigated using a full-scale bioreactor. The bioreactor is situated subsurface and is filled with pine woodchips. READ MORE

  4. 3. Olika filtermaterial vid jordbruksdränering

    University essay from SLU/Dept. of Soil and Environment

    Author : Hanna Falk; [2019]
    Keywords : dräneringsfilter; mineralfilter; organiska filter; syntetiska filter;

    Abstract : Drainage of arable land creates a better soil structure and a better aeration of the soil profile. Some fields are naturally drained, while others are dependent on drainage to create good cultivation conditions. Subsurface drainage is the most common method used to artificially drain arable land. READ MORE

  5. 4. Modeling contingency infiltration scenarios in MODFLOW : Stockholm Bypass and tunnel induced groundwater drawdown

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Aslan Abdo; [2019]
    Keywords : tunnel induced groundwater drawdown; MODFLOW; artificial recharge; land subsidence; grundvattenavsänkning; tunnel inläckage; MODFLOW; infiltration; sättning;

    Abstract : Subsurface constructions, such as tunnels, create hydrogeological challenges in mitigating risk of subsidence due to groundwater drawdown. Presenting readily made precautionary mitigation plans, such as strategically planned artificial recharge applications, can help effectivise the mitigation process. READ MORE

  6. 5. Groundwater investigation at Storsudret, Gotland

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Ludvig Almqvist; [2018]
    Keywords : Subsurface dam; subdam; groundwater level; GIS; storage; groundwater balance; Topographic wetness index; Gwbal; well extraction; drainage control; specific capacity;

    Abstract : Sweden have faced decreasing groundwater storage with critical low groundwater levels for several years. Gotland is one example with issues of providing freshwater due to the low groundwater levels. These circumstances can be related to impacts caused by early agriculture development, an increased demand of freshwater and climate change. READ MORE