Total organic carbon (TOC) and chemical oxygen demand (COD) are two methods used for measuring organic pollutants in wastewater. Both methods are widely used but the COD method results in production of hazardous wastes, including mercury.The purpose of this study was to validate the method TOC that will replace COD and find a factor to convert TOC to COD. In this study 26 samples were analyzed from four sewage treatment plant in the municipality of Enköping.The results show that the COD method could be replaced by the TOC method.The factor for COD/TOC was between 3.1 - 3.3. Both methods will be used in parallel until 2013 when it will be forbidden to use the COD analysis..

In modern society in terms of economics and environmental impact, it is important to ensure that a company is as energy efficient as possible to reduce the amount of energy used. About 10 TWh of electricity used annually to pump drives in Swedish industry. Therefore, pumping system has great potential for energy savings.The objective of this report was to determine how much energy and money that can be saved with the insertion of variable speed drive to six pumps on Bleach plant 4 in Skutskär Mill. The work was performed with electrical measurements during one week, analysis of pump curves and the compilation of production data over a year.The results show that four of these six pumps were profitable and yielded an annual saving of 1172 MWh of electricity and 560 000 SEK. With an economic lifetime of 10 years and a discount rate of 6.8% the final result for the entire life-cycle savings became 3 355 000 SEK.

Abstract Title: Total Cost of Ownership ? Revealing the true cost of owning and operating equipment. Authors: Anna Bladh Anna Ström Tutors: Michaela Boye, Parts and Service, PTD, Alfa Laval Göran Berg, Parts and Service, PTD, Alfa LavalCharlotta Johnsson, Department of Automatic Control, LTH, Lund UniversityBertil I. Nilsson, Department of Industrial Management and Logistics, LTH, Lund UniversityCarl-Henric Nilsson, Department of Business Administration, Lund University Core issue: ?Which costs should be included in a general Total Cost of Ownership model regarding centrifuges, and what input variables are needed in order to calculate those costs in a user-friendly way and with a maintained level of accuracy?? Purpose: The theoretical purpose of the thesis is to identify the cost items that have the greatest impact on a TCO calculation for a centrifuge.

Föreliggande rapport är avsedd som ett examensarbete i elektroteknik (20p).Syftet med arbetet är att skapa en applikation för att finna störningar pålågspänningsnätet upp till 95kHz. Bakgrunden till arbetet kommer frånenergibolagen som vill kunna skicka datainformation direkt pålågspänningsnätet, detta vill de kunna göra med hastigheter mellan 2k ? 5kHz. Beroende på med vilken hastighet man vill skicka information kan störningar mellan givna frekvenser hindra datatransmissionen, därför är detviktigt att hitta vid vilka frekvenser störningarna uppstår så att lämpligaåtgärder kan vidtas.Grundläggande delar i applikationen är ett oscilloskop för mätning, dator medGPIB- kort för upptagning av data och LabView programvara för hantering avdata. För frekvensanalys kommer Fast Fourier Transform, FFT, att användas,varvid en grundläggande beskrivning kommer att medfölja..

This report describes the tactics used by the Swedish Air Force rescue services against crashed military aeroplanes and helicopters. The aim of the report is to study and analyze the tactics used by the different Air Force bases, standards, regulations and equipment. The report also discusses the different work environment problems and hazards around military ARFF. Much of the information gathered for the report comes from interviews with personnel working in and with the military rescue services. The overall conclusion is that the basic conditions for a good ARFF tactic are there, but a lot needs to be improved and optimized..

Intresset för sömlösa stålrör med stora ytterdiametrar i förhållande till tunna väggtjocklekar har ökat tillsammans med att högre hållfasthet i olika stålsorter tillkommit. Detta gör det möjligt att tillverka lättare, billigare och mer materialeffektiva stålprodukter med samma eller högre hållfasthet som tidigare.Denna nya utvecklingsriktning medför förändringar och utmaningar i en av företaget Ovakos produktionslinor i Rörverk 5 Hofors, vilket de har behov av att samarbeta med maskinkonstruktionsföretaget BEKAB för att utvärdera och utveckla.I Ovakos produktionslina i Rörverk 5 finns en del av ett asselvalsverk som kallas för "förreducerare". Denna del av asselvalsverket ser Ovako ett stort intresse i att utvärdera och utveckla för att bättre anpassas till den nya utvecklingsriktningen.  En känd utmaning hos förreduceraren sen tidigare är att den från början är framtagen för att reducera ner ett kvalitetsproblem hos rörprodukterna som kallas för trattbildning. Projektet fördjupar sig därför inom trattbildning för att bättre förstå grunden till förreducerarens nuvarande design för att därefter genomföra en redesign av förreduceraren.I en nulägesanalys av nuvarande förreducerare framkommer ett flertal olika produktionsutrustningsproblem med tillhörande kvalitetsproblem hos rörprodukterna. Projektet väljer därmed att fokusera på de produktionsutrustningsproblem som ger störst effekt för förreduceraren om de löstes.

This essay is about a deserted medieval habitation called Skyttsie Hage which is located in the south of Sweden in the Scania province where it lies on a moor on the Falsterbopeninsula. Remains of five to six larger buildings have been found here with a surrounding earthwork, although it's not known for sure what kind of habitation they have been part of. Local folklore from the 17:th century states the area as a place where pirates lived, and that this was the reason for it's devastation. Another says that there once stood a breedingfarm belonging to the danish crown. Archaeologists have made several speculations which includes a deer park, a royal estate, an isolated farm or a smaller village.

The art of riding is a fugitive art, which signifies that the means available for documentation of performances are insufficient, and that the equipment used by the old masters are important clues for the understanding of their art. The most specialized tool used for riding is the bit, in particular the curb. As museum catalogues become accessible to the public through the internet, riders will look for information about bits. It is then important that the information provided in the catalogues is valid not just for the curator, archaeologist or art historian, but also for the rider.In this paper, I add context to the bits by explaining two opposing philosophies of bitting, and how they affect the design of the bits. This is followed by a brief history of the art of riding and how the bits have evolved since the 16?th century.

Rapporten undersöker Volvo Construction Equipment Components axelmontering för axlar till Dumper och Hjullastare. Arbetet har utförts med intervjuer, studiebesök på andra fabriker och en detaljerad studie av monteringsavdelningen och dess angränsande avdelningar vilka levererar artiklar till monteringsstationerna. Undersökningen har resulterat i ett förslag där fördelarna av en stationsbaserad montering och fördelarna med en linjemontering kombinerats. Arbetet presenteras i rapporten och i en dator animerad 3D simulering av förslaget till en ny monteringslayout. Jag anser att Volvo CE Components och montörerna på monteringsavdelningen skulle gynnas av monteringslayouten som redovisas i rapporten..

The purpose of this thesis project was to study how different companies are working with LastTime Buy and through that study propose improved ways of working with this for Scania CVAB. The project aimed at studying the work processes from three different perspectives:decision models, quality aspects and liability aspects between companies.To study this, qualitative interviews with one or several representatives from differentcompanies that are affected by or involved in Last Time Buy were used. Representatives wereselected partly from Original Equipment Manufacturers, suppliers, component manufacturersand companies offering third part solutions for Last Time Buy. The companies also reflecteddifferent industries. The interviews aimed to create an understanding for the methods used atthe different companies but also the ways of thinking and the knowledge behind the choice ofthese working methods.The analysis shows that the Original Equipment Manufacturers used very similar decisionmodels for Last Time Buy, but that external factors or the company strategy made them reachdifferent results.

The aim of this study was to review scientific articles to evaluate which nursing treatment are in use to ease problems such as dysphagia, mucositis and xerostomia and its efficiency. The method was a literature review in which the scientific articles where found in the database PubMed. A total of sixteen articles where included, these articles where analyzed based on their quality and contents. The result showed that electrical stimulation and rehabilitation was used against dysphagia, they both had a doubtful effect. Mouth washes was commonly used to reduce mucositis; triclosan mouthwash, benzydamine mouthwash, sacralfate mouth wash, povidone-iodine and salt-sodium mouthwash showed effect.

Today's high oil prices and more stringent environmental requirements have led to that manufacturers of mobile construction equipment try to make their products more energy efficient. With this in mind a project about hybridization of hydraulic systems has been formed. The purpose of this project was to analyze the savings that can be achieved by hybridization of hydraulic systems. A reach stacker truck (Kalmar DRD450-80S4XS) were simulated in some load cases with conventional hydraulic systems and with three types of hybridized hydraulic systems. Different parts of the hydraulic systems were also analyzed separately.

In order to measure the quality of the logs, one can with help of Fast Fourier Transform technique get the signals resonance peaks. With help of these peaks you can see whether the quality of a tree is good or bad. This report contains the work of a where a program has been developed to be able to process a vibration created by an automatic hammer hitting on a log of wood. From the processed signal the program should be able to show both the raw wavesignal and the processed measured data from the resonance peaks. Beyond the raw wavesignal and resonance peaks the program should also be able to control the automatic hammer.

In order to measure the quality of the logs, one can with help of Fast Fourier Transform technique get the signals resonance peaks. With help of these peaks you can see whether the quality of a tree is good or bad. This report contains the work of a where a program has been developed to be able to process a vibration created by an automatic hammer hitting on a log of wood. From the processed signal the program should be able to show both the raw wavesignal and the processed measured data from the resonance peaks. Beyond the raw wavesignal and resonance peaks the program should also be able to control the automatic hammer.

In order to measure the quality of the logs, one can with help of Fast Fourier Transform technique get the signals resonance peaks. With help of these peaks you can see whether the quality of a tree is good or bad. This report contains the work of a where a program has been developed to be able to process a vibration created by an automatic hammer hitting on a log of wood. From the processed signal the program should be able to show both the raw wavesignal and the processed measured data from the resonance peaks. Beyond the raw wavesignal and resonance peaks the program should also be able to control the automatic hammer.