Essays about: "Activated sludge treatment"
Showing result 1 - 5 of 60 essays containing the words Activated sludge treatment.
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1. Yearly distribution and composition of per- and polyfluoroalkyl substances (PFAS) in Luleå wastewater treatment plant
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : PFAS (per- and polyfluoroalkyl substances) are a large group of substances that are used in a large variety of products because of their unique water and dirt repellent properties. The substances are extremely persistent and can spread over large distances in groundwater, surface water, and in the air, which makes them an environmental and a health concern. READ MORE
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2. Evaluation of pharmaceutical removal in seven WWTPs : Efficiency of different treatment technologies
University essay from Stockholms universitet/Institutionen för miljövetenskapAbstract : Wastewater treatment plants (WWTPs) are originally not constructed to remove pharmaceuticals from the wastewater. Biological treatment technologies used in many WWTPs today, e.g., activated sludge, MBBR and trickling filters, can, however, remove some pharmaceuticals well. READ MORE
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3. The Potential of Dissolved Air Flotation for PFAS Reduction in Norrvatten's Future Waterworks
University essay from KTH/KemiteknikAbstract : Norrvatten är en av Sveriges största dricksvattenproducenter. Med ett ökande behov av en större produktionskapacitet och nya regleringar, planerar dem att förbättra sin reningsprocess. En aspekt som kräver omfattande undersökning är val av reningsmetod för att nå den nya gränsen från Livsmedelsverket för fyra PFAS kemikalier. READ MORE
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4. Experimental Study of Flow Fields in Moving Bed Biofilm Reactors
University essay from KTH/Hållbar utveckling, miljövetenskap och teknikAbstract : With the rise in global energy prices, as well as energy consumption being the largest source of greenhouse gas emissions, biofilm-based systems utilized for wastewater treatment, such as moving bed biofilm reactors (MBBRs), have grown in popularity for their lower energy consumption compared to conventional activated sludge processes. However, this technology requires large amounts of energy to constantly distribute and suspend its biofilm carrier within the reactor by either aerators or mechanical mixers. READ MORE
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5. Modelling the full-scale N2O emissions from wastewater treatment plants for identifying mitigation strategies
University essay from Lunds universitet/Kemiteknik (CI)Abstract : Nitrous oxide (N2O) emissions, which primarily originate from the biological nitrogen removal process, dominate the release of greenhouse gases (GHGs) in wastewater treatment plants (WWTPs). N2O production occurs through dynamic microbial pathways that have a significant impact on the environment compared with other GHG emissions. READ MORE