I have studied Environmental technology at Aalborg University. Before then I was at the Tek-Nat Basic Education at Aalborg University and followed the line of Biotechnology. I have done the following projects.

 

P0: Supplying Laesoes with power from alternate powersources. It was a quite small and unserious project in which we compared different alternative powersources and found the most suitable for supplying the small island. The following people were in the projectgroup: Jesper "Ged" Rasmussen, Lars Rasmussen, Johnny Rasmussen, Nauja Heiselberg, Annika Græsdahl.

 

P1: Recycling water inside scattered residence. In this project we tryed to minimize the waterconsumption and the pollution from small nonsewered residences. We wanted to recycle the water and treat the wastewater in a sandfilter in order to use the water once again inside the house. The following people were in the projectgroup: Jan Gramkow, Susanne Steffensen, Christian Skaaning Laursen, Jarl T. C. Ross, Sveinn Tryggvarsonn.

 

P2: Optimization of the efficiency of treating water in sandfilters by raising the temperature of the wastewater. This project was quite large since we experimental determined, how much better a sandfilter would work at 50 degrees celcius compared to the normal 10 degrees celcius. This we used to find out, how much space the new waste water treatment system would take up. Since the system would consist of a crossflow heat exchanger the energy consumption would be small. The following people were in the projectgroup: Jan Gramkow, Dennis Tranholm Jensen, Jesper Samsø Pedersen, Hans Rask Nielsen, Lorne Maxwell Hansen, Shahrokh Khazraie Padrah.

 

K3: We determined how organic material from a salmonfarm effected the level of oxygen in the water downstream the salmonfarm. The following people were in the projectgroup: Anders Nielsen, Søren P. Hansen, Nauja A. Heiselberg, Marie Kloppenborg, Ole C. G. Otte

 

K4: This semester aimed at making us more critical towards methods of analysing. We choose a method for determination of total lipid in waste water by using infra red spectroscopy and examined its accuracy, precision, selectivity and sensitivity in the areas of sampling, handling and analysis. The following people were in the projectgroup: Marie Kloppenborg, Heidi Laerke Soerensen, Dennis Tranholm Jensen, Trine Kastrup Dalsgaard

 

K5: We used the unit operation cake filtration to filter pH-adjusted process water. The process water contained large amounts og aluminium which we could remove after adding CO2 as an acid. The process water was meant to be recycled and the pH was to be keept at pH 13,5. The reason why we choose CO2 was, that we expected it to leave the process water when pressure was removed, and thereby raising the pH again. I´t didn´t, but we learned a lot from the project anyway. The following people were in the projectgroup: Anders Nielsen, Marie Kloppenborg, Dinna Christensen, Jesper Samsø Pedersen

 

B6M: This semester was divided into two parts. The first part concerned the sewage system in the town Frejlev near Aalborg. We examined the sewage system using MOUSE (DHI) to see, in which parts of the sewage system problems could occur. The main interest here was to see, if the system had the right dimensions to handle the amount of water during a rain event. The second part of the project concerned the waste water treatment plant in Aabybro, also situated near Aalborg. We mesured a lot of parameters on the plant and analysed these to try to map all the processes in the plant. The following people were in the projectgroup: Dennis T. Jensen,  Gunver M. Madsen, Jacob N. Madsen, Martin Christensen

 

B7M: This semester concerned transport and processes in earth. We examined a polluted site in Hjørring, north of Aalborg, where a gas treatment center once were. In different spots there were found large amounts of pollutants. In close proximity of this site there was a drilling of water and we examined the transport and break down of phenol in extreme cases of pumping of ground water. To do this we used MIKE SHE (DHI) to calculate the transport and processes in the saturated zone and made a model of our own for the unsaturated zone. The following people were in the projectgroup: Jacob N. Madsen, Dennis T. Jensen, Jan A. Liodden, Kim Skals.

 

B8M A: This semester concerned industrial environmental engineering and we looked at Sæby Fiskeindustri A/S, a fish processing plant. The project was spilit up in two parts. The first part involved mapping of all flows inside the factory and identifying weak spots, where improvements to reduce the use of resources could be deplyed. The second part of the project involved looking at the waste water treatment plant where there were huge problems cleaning the water. There were many reasons to this and the main one was the unsteady flow to the plant. We designed an alternate cleaning plant based on the Sequencing Batch Reactor princip and modelled the processes in a program written in Delphi. The following people were in the projectgroup: Jacob N. Madsen, Dennis T. Jensen, Marie Kloppenborg, Kim Skals.

 

B8M B: In this semester we examined the poor state of Mariager fjord. A model including nitrogen, phosphor and biomass was written in Delphi to simulate the transport of water and nutrients and the processes transforming the nutrients. The goal of the project was to estimate the reduction of nitrogen from farming required to get a visibility of 2 meters into the fjord. The following people were in the projectgroup: Jacob N. Madsen, Dennis T. Jensen, Marie Kloppenborg, Kim Skals.

 

B9M: I examined the effect of the physical shape of a stream on the deposition of organic matter. Traditional models use a first order sedimentation of particles regardles of the variation of bottom shear stress. The project contained three part. I chose a stream and mapped 50 meters in details. These data were then used in CFD modelleing of the flow in the stream. This was done in the program CFX. Then I build a model in Delphi simulating the transport of particles using velocities and eddy-viscosities from the CFD model. This was done using Random Walk Particle Method. There were no other participants in this project. 

 

B10M: I combined CFD modelling in a waste water treatment plant with Activated Sludge Modelling to be able to map gradients of different components in the plant. The model included: flow modelling, transport-dispersion modelling of the components, air intels, aeration of water, propellers and microbial processes. I used this model on a waste water treatment plant of the OCO type with good results. The model was calibrated using measurings in a plant of this type. There were no other participants in this project. 

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