The smelting process at Sapa Profiler AB in Sjunnen generates large quantities of waste heat which is absorbed by the cooling water when the aluminum is cooled down. This paper is the result of a Master?s Degree Project aiming to present the conditions for recycling the waste heat. The cooling water absorbs the heat from the aluminum at an average rate of 600 kW and the paper shows that it can be used to replace electrical power consumption for heating the production plant?s facilities.

När en stad växer måste man ta ställning till hur det ska ske. Idag är biltrafiken dominerande i Göteborg och i framtiden skulle spårbunden trafik och utbyggd pendeltågstrafik i regionen kunna innebära mer hållbara tranporter. En pendeltågsstation har ett relativt begränsat omland och behöver för fullt utnyttjande bebyggas nära inpå. Den spårbundna trafiken kan dock innebära störningar och risker. Jag undersöker i mitt examensarbete hur en ny stadsdel utanför Göteborg kan byggas ut kring en tänkt pendel­tågs­station.

Environment and sustainable development are very current topics in today's society, bothnational and international. The government's bill 2004/05:150 ?Swedish environment objectives - a common commission? contains several environmental quality objectives, that in turn is divided up in smaller secondary objectives. One of the secondary objectives says: ?Latest year 2010 shall at least 35% of the food waste from households, restaurants, largescale kitchens and shops be recycled through biological treatment.

Furulund är en mindre ort i Skåne som står för en stor förändring när orten får en tågstation..

The purpose of this master thesis is to implement and validate a Power System Stabilizer (PSS) to a generator at Trängslet hydropower station in Dalarna, Sweden. Problems with local rotor oscillations can occur at the hydropower station when power is transferred on a new power line (130 kV) from Northern to Southern part of Dalarna. To ensure good operation properties on this power line Fortum Generation AB and Fortum Distribution AB wants to activate a PSS on a generator.There have been investigations in which situations and what equipment that contributes to rotor oscillations. When this is known the PSS is tuned to damp these oscillations by choosing a good set of parameters. The most important parameters for good performance are to choose amount of gain and phase compensation.

In many developing countries, among them Vietnam, contamination of agricultural land is a major issue that has public health implications. A fast growing population, rapid urbanization and industrialization have led to air and water emissions of potentially toxic elements (PTEs), such as cadmium (Cd). Earlier studies have shown that individuals with low iron (Fe) and zinc (Zn) status absorb larger quantities of Cd than those of adequate nutritional status. The purpose of this study was to investigate and compare the Fe and Zn intake from the foods consumed by women (15-45 years) in selected households in two agricultural villag-es in the Red River delta in Vietnam. In one of the villages the residents were involved in metal (mainly Fe) recycling activity, whereas in the other village the residents had agricul-tural production as main source of income. Interviews, followed by food intake calcula-tions, were performed.

This essay is questioning if the state as an unsecured creditor in a bankruptcy proceeding, according to the principle of equal treatment, has the same rights as the other unsecured creditors. The principle of equal treatment means that creditors with unsecured claims are supposed to have mutually equal rights to dividends in a bankruptcy. In the Swedish bankruptcy law from 1987 there are recycling rules which means that some legal actions taken by the bankrupt debtor before the bankruptcy can be recycled to the bankruptcy estate. These rules do not apply on taxes. This essay analyzes whether the state should have this advantage or not.

The situation at Plastal AB is following; the plant in Simrishamn has not capacity enough but the plant in Kristinehamn has unused capacity. My task with this master thesis is to build a logistic flow between this two plants, optimize purchase quantities and ensure delivery safety.The production of the Intermediate Section (LS) will be divided between the plants. The LS will be produced in the following way; the injection moulding process will be done in Simrishamn and the assembling and lacquering processes in Kristinehamn, The reason to divide the production is to ensure delivery safety. Plastal AB can not move the whole production of the l.S because the two plants have different processes (moulding res. injection moulding).When the 1.5 has been transported to Kristinehamn following moments are included in this order; lacquering, welding and assembling.

När en stad växer måste man ta ställning till hur det ska ske. Idag är biltrafiken dominerande i Göteborg och i framtiden skulle spårbunden trafik och utbyggd pendeltågstrafik i regionen kunna innebära mer hållbara tranporter. En pendeltågsstation har ett relativt begränsat omland och behöver för fullt utnyttjande bebyggas nära inpå. Den spårbundna trafiken kan dock innebära störningar och risker. Jag undersöker i mitt examensarbete hur en ny stadsdel utanför Göteborg kan byggas ut kring en tänkt pendel­tågs­station.

På grund av den globala uppvärmningen och den ökade användningen av plast de senaste årtiondena har plastavfallshantering blivit allt viktigare. Eftersom materialåtervunna produkter sparar material och naturresurser, såsom den olja som används för tillverkning av plast, är denna återvinningsmetod högst aktuell. De begränsningar som finns idag för vad som är möjligt att materialåtervinna gör det allt viktigare att anpassa förpackningar för återvinning bättre. Detta visas tydligt av att de svenska målen för återvinning av hårda plastförpackningar inte uppnås, trots dagens medvetenhet kring miljöproblemen. Denna studie undersöker därför hur Design for Recycling (DfR) kan användas och implementeras på bästa sätt för att stimulera återvinning av hårda konsumentplastförpackningar.Utifrån litterära referenser har en kartläggning av betydelsen av DfR under alla stadier i en produkts livscykel genomförts och genom denna har problemområden identifierats och pågående utveckling inom området urskilts.

This study was a final thesis, for the bachelor program in civil engineering at theUniversity of Uppsala, which was made on behalf of Riksbyggen in Uppsala. Acomparative study of two stain renovation methods; tradition pipe replacement andrelining was done with an environmental perspective. A simplified life cycleassessment (LCA) was done according to the International Organization ofStandardization (ISO) with the LCA tool Eco-indicator 99, in order to be estimate theimpact on the environment. LCA is a method that follows a product or a system?from the cradle to the grave?, which means that all the environmental impact over alifetime is considered.The work was executed by using a stairway with nine apartments in a house called?Uppsala Hus 9? as a reference object, which was provided by Riksbyggen.

This report is about accessibility in a station environment. Studies have been made about how an accessible building should be designed. Accessibility is an important issue when striving for a society with equality as the foundation. Sweden is one of the most accessible countries when speaking about the built environment. A result of prosperity and a well-managed democracy.

Jämtkraft AB which is a power production company in Sweden has bought two newhydro power units to their station in Hissmofors. The two new generators are using aconcept with sliding stator feet to handle the thermal expansion.The concept with sliding stator feet on hydro electric generators has not beenworking satisfactory on many hydro power stations in Sweden and has caused a lot ofcosts due to long downtimes.The new station in Hissmofors is very important for Jämtkraft AB, and therefore theywant to know how to make sure that the sliding stator feet are working as theyshould. According to theories and a simplified model of the generator the stator feetdisplacement should be around 1 -1,6 mm.The generators are delivered with a surveillance system that will measure thedisplacement of the sliding stator feet. The signal from the system isn?t accessible forJämtkraft AB but it will alarm when the sliding stator feet are malfunctioning.To secure the function of the sliding feet a logger for the surveillance system or adifferent measurement system must be used; if both systems are used Jämtkraft cansecure the function of the surveillance system..

Nanofiltration is a proper way of preparation of drinking water. The process has a lot in common with reverse osmosis where a semipermeable membrane is used to separate a pure water flow from the remaining water. A pilot plant was used to ensure that nanofiltration is a suitable technology for a specific waterworks station in Glemmingebro, Ystad. The purpose was also to find out if a pH-adjustment is needed for feed water in a possible full scale plant.  In this case nanofiltration is used mainly to remove sulphate and calcium since the raw water contains concentrations of these substances which exceed the limits for potable water. It is important to receive a high recovery (RC), otherwise the deliviery of water won?t be high enough.

The purpose of this essay is to draw attention to the obstacles that affects the internal trade of waste within the EU. The essay doesn?t in any way encourage pollution or illegal handling of waste but unfortunately there are large profits to be made from illegal destruction and recycling of waste and especially hazardous wastes. Therefore the dependable companies handling waste must access a market with fast and flexible (but predictable) regulations as well as lower transaction costs to help make the environment better and encourage a strive for increased recycling. There are examples where some waste only can be sent to a land-fill within the country but could be recycled in other EU-countries.