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Found 4 essays matching the above criteria.

  1. 1. Modeling BOD removal in free watersurface constructed wetlands with variable residence time-based methods

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Degefu Yohannes Sebro; [2021]
    Keywords : BOD removal; Free water-surface constructed wetlands; VART-BOD; models; dynamic diffusion zone; Technology and Engineering;

    Abstract : Constructed wetlands (CWs) have been applied for several years in the removal process pollutants from secondary treatment plants and stormwater. In this paper, the Variable Residence Time (VART) model for solute transport in streams was extended to simulate the BOD removal process in free water surface flow constructed wetlands (FWS CWs). READ MORE

  3. 2. Modelling of a sulfate reducing and metal recovery process, for application within treatment of industrial wastewater

    University essay from Lunds universitet/Bioteknik (master)

    Author : Kristina Broberg; [2019]
    Keywords : Biotechnology; Wastewater treatment; Process modelling; Bioprocess technology; Sulfate reducing bacteria; Metal sulfides; Simulation; Matlab; SuperPro Designer; Bioteknik; Technology and Engineering;

    Abstract : Denna masteruppsats syftar till utvecklandet av en industriellt, fullskalig modell över en vattenreningsprocess som syftar till simultan sulfatreduktion och tungmetallåtervinning från processvatten vid gruvdrift. Den mängd sulfat som finns tillgänglig i lakvattnet, omvandlas till vätesulfid med hjälp av sulfatreducerande bakterier (SRB). READ MORE

  4. 3. Simulation of dry matter loss in biomass storage

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

    Author : Jens Bjervås; [2019]
    Keywords : Forrest industry; Aerobic repsiration; Thermal runaway; Wood chips;

    Abstract : Material degradation and a decrease of fuel quality are common phenomena when storing biomass. A magnitude of 7.8% has been reported to degrade over five months when storing spruce wood chips in the winter in Central Europe. This thesis presents a theoretical study of biomass storage. READ MORE

  5. 4. Optimal steady-state design of bioreactors in series with Monod growth kinetics

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Molin Hanna; [2018]
    Keywords : bioreactor; CSTR; PFR; optimization; modelling; Monod kinetics; decay rate; bioreaktorer; CSTR; PFR; optimering; modellering; Monod-kinetik; avdödningshastighet;

    Abstract : Bioreactors are used to carry out bioprocesses and are commonly used in e.g. biogas production and wastewater treatment. Two common hydraulic models of bioreactors are the continuous stirred tank reactor (CSTR) and the plug-flow reactor (PFR). READ MORE