Essays about: "dissolved oxygen and total organic content"

Showing result 1 - 5 of 7 essays containing the words dissolved oxygen and total organic content.

  1. 1. The role of bed sediments for fractionation of phosphorus in remediated ditches in Sweden

    University essay from SLU/Dept. of Soil and Environment

    Author : Emma Ryding; [2022]
    Keywords : Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

    Abstract : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. READ MORE

  3. 2. Identifying factors that correlate with Enhanced Biological Phosphorus Removal upsets at Lundåkraverket

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Rounak Niranjan; [2021]
    Keywords : Enhanced biological phosphorus removal; polyphosphate accumulating organisms; glycogen accumulating organisms; sludge content in aeration basin; nitrates in aeration basin; pH of incoming water; principal component analysis; pairwise correlations; inhibition factors;

    Abstract : The Enhanced Biological Phosphorus Removal (EBPR) process is characterized as the most sustainable process to remove phosphorus from wastewater albeit with high variability in performance efficiency. Thus, unpredictable upsets in the EBPR system is the norm across several wastewater treatment plants throughout Sweden, forcing the hand of the operators to dose higher volume of chemicals to reach the effluent requirements. READ MORE

  4. 3. Mercury and methyl mercury release in soil and water - their relationship with different properties in Skogaryd

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Linnéa Johansson; [2020-07-08]
    Keywords : mercury; methylmercury; demethylation; pH; dissolved oxygen and total organic content;

    Abstract : In Skogaryd research site, water samples were taken and analysed for total mercury (Hgtot) and methylmercury (MeHg) concentration along with the pH, dissolved oxygen (DO) and total organic content (TOC). This to give the condition of the site before the forest is clear-cute and a part of the land rewetted to a wetland. READ MORE

  5. 4. The content, chemical state and accumulation of vanadium in a drill core of Alum shale from Kinnekulle

    University essay from Lunds universitet/Kemiska institutionen

    Author : Niklas Gunnarsson; [2019]
    Keywords : Alum Shale Formation; Alum shale; Kinnekulle; Vanadium; Inorganic chemistry; Oorganisk kemi; Chemistry;

    Abstract : Exploitation of alum shale is a controversial subject in Sweden due to the history of pollution of the environment and groundwater, from past mining industries. The extraction of vanadium from alum shale is no different. Nevertheless the metal is a valuable resource used in tools, building, industries and aerospace materials. READ MORE

  6. 5. Release of elements from unprocessed- and processed shale from Kvarntorp : Effect from different pH

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Lovisa Karlsson; [2013]
    Keywords : shale; Kvarntorp; extraction; pH; element; metal; DOC; precipitation; refuse; weathering; sulphate; adsorption;

    Abstract : The alum shale of Sweden is a sulphidic black shale which was mined for its contents of alum during the 17th-19th centuries. During the thirst half of the 20th century alum shale from Kvarntorp was pyrolysed for refinement of its organic matter. READ MORE