Essays about: "Sludge accumulation."

Showing result 1 - 5 of 16 essays containing the words Sludge accumulation..

  1. 1. Production of polymers from a papermills wastewater using HTC substrate. : Investigating the viability of using wastewater sludge from Skoghalls’ papermill in combination with filtrate from HTC of sewage sludge to produce biological plastic producing polymers.

    University essay from Karlstads universitet/Avdelningen för energi-, miljö- och byggteknik

    Author : Regan George; [2023]
    Keywords : PHA; HTC-substrate; Polymer;

    Abstract : Since their conception, plastics have been a dominant product due to the versatility of use, and readily available raw materials. However, the production and consumption of synthetic plastics have continued to increase over the years, leading to a significant rise in plastic waste and its associated environmental impacts, such as the detrimental effects plastic waste has on ecosystems, including the presence of toxic microplastics and risks to marine life, are becoming the focus of criticism. READ MORE

  3. 2. Anaerobic Co-digestion of steam pretreated wheat straw and sewage sludge

    University essay from Lunds universitet/Bioteknik (master); Lunds universitet/Bioteknik (CI)

    Author : Virginia Tosi; [2021]
    Keywords : Anaerobic co-digestion; wheat straw pretreatment; nutrients availability; OLR; VFA acumulation; Biotechnology; Technology and Engineering;

    Abstract : Anaerobic digestion (AD) of wastes and residues is a widely applied and explored process. However, when the process is not optimized, inadequate concentrations of nutrients and inhibitory compounds are common and can lead to low maximum organic loading rates and increased risk of process problems, low organic dry solids degradation rate and reduced methane yields. READ MORE

  4. 3. Volatile fatty acid production and application as external carbon source for denitrification

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Cora Michelle Döhler; [2020]
    Keywords : VFAs; co-fermentation; primary sludge; food waste; denitrification; external carbon source; MBBR;

    Abstract : By rethinking wastewater treatment plants (WWTPs) as resource recovery facilities, it is possible to de- velop the next generation of WWTPs. Moreover, it allows to accomplish environmental goals, such as reducing the CO2 footprint, and comply with increasing effluent standards regarding the concentration of nitrogen in a more sustainable way. READ MORE

  5. 4. The naturalization of the urban and corporate logic : how the sacred waters of Lund, Sweden, progressed into a toxic sludge hole

    University essay from Lunds universitet/Kulturgeografi och ekonomisk geografi; Lunds universitet/Humanekologi

    Author : Mikael Lövgren; [2020]
    Keywords : Commons; Sacred waters; Enclosure; Lund University; Rausing dynasty; Landfill workers of Lund; Moral economies; Social Sciences;

    Abstract : In this study a landscape is interpreted from an analytical and binary theoretical framework in order to contrast and extract different social formations that have been conducive to its creation. The landscape in question is a contemporary park found in Lund, Sweden, in the province of Skåne. READ MORE

  6. 5. Mapping of spontaneous biological phosphorous removal in MBR-process

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Benjamin Fridh; [2020]
    Keywords : Polyphosphate poly-P ; Phosphorous;

    Abstract : An unexpected biological removal of phosphorous in IVL Hammarby Sjöstadsverket pilot membrane bioreactor (MBR) wastewater treatment process was investigated by three distinct methods. a) Investigation and quantification of the biological phosphorous uptake (bio-P) capacity by phosphate release tests (PRT), b) validation of bio-P occurrence by granular polyphosphate (poly-P) staining and microscopy and c) metagenomic community structure analysis to map the sludge habitat. READ MORE