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524 Uppsatser om Remediation of mine waste - Sida 21 av 35

Rening av lakvatten vid deponin Degermyran i Skellefteå kommun : Utvärdering av nuvarande reningseffekt och simulering av mängden bildat lakvatten under 2000-talets klimatförändringar

At Degermyran landfill, situated in the municipal Skellefteå, a leachate treatment system was installed in 2005. One of the aims of this study was to investigate how well the treatment system works by using data from chemical measurements made on the leachate before and after treatment. Further this study had the purpose of investigating how the predicted climate changes of the 21st century will affect the amount of leachate generated at Degermyran by using a modified version of Thornthwaites water balance model. The treatment system has the ability of reducing manganese by 90 %, nitrogen by 73 % och TOC by 79 %. By the turn of this century the amount of precipitation that percolates the waste at Degermyran will be between 254 and 298 mm, depending on the amount of greenhouse gases that will be released in the future to come.

Bygg- och rivningsavfall Construction & Demolition Waste

Stora materialmängder omsätts i byggsektorn, men en stor del restprodukter från byggande ochrivning hamnar på avfallsdeponi idag. Bygg- och rivningsavfallet är besvärligt att hantera och sorterapå grund av att mängden är stor, sammansättningen komplex och den innehåller många miljöfarliga ämnen.Syfte med examensarbetet är att ta reda på hur hanteringen av bygg- och rivningsavfall går till, vad som händer med avfallet efter att det har slängts, vilka olika faktorer som förekommer och hur avfallet kan återvinnas, återbrukas och på vilket sätt kan man förbättra hanteringen av avfallet på ett miljömässigt sätt.Examensarbetet består av två huvuddelar. Den teoretiska delen går igenom relevanta teorier ochinformation från litteratur och olika rapporter. I undersökningen tillämpas informationen från litteraturen och appliceras på de byggarbetsplatser och miljöföretag som valts att besökas.När det kommer till bygg- och rivningsavfall från olika företag kan det skiljas markant beroende påvar bygget ligger och vilket typ av arbete utförs. Det medför också hur stora massor som man slänger i olika containrar och om man har plast till alla containrar på det området som man befinner sig på..

The vertical farm : varför har idén uppkommit och hur är den tänkt att fungera?

By immersion in the situation of the food production today and a historical study of how past development has led us to this point, one goal of this essay is to discuss whether the current way of farming can be applied in a sustainable future. Another objective of the essay is to study the vision Vertical farming as an alternative approach, and to focus on different aspects of this phenomenon in order to provide as comprehensive a picture as possible.The paper, thus, seeks to broaden the views for alternative approaches regarding a well-established method which we often take for granted. The aim is also to initiate a discussion around the need to also take radical ideas in regard if we want to face the future in a sustainable manner. The method is a qualitative literary study where scientific articles and papers have been used to discuss the issues: why has the idea of Vertical farming arisen, what is Vertical farming and how is the Vertical Farm meant to operate? Does Vertical farming have a place in the sustainable city of the future? For a long time us humans lived as one with nature, in a symbiotic relationship in which we gave and took as a functioning part of an ecosystem.

Studie av flöden på en dagkirurgisk avdelning

Sepsis (blodförgiftning) är ett allvarligt tillstånd och behöver en snabb diagnos som fastställs genom blodprov. Blodprov från hela Stockholms Län skickas till Karolinska Universitetslaboratoriet (KUL) för analys, där biomedicinska analytiker och läkare fastställer arten på infektionen och beslutar vilken antibiotikabehandling är optimal.Målet med arbetet var att identifiera eventuella problem som skapar flaskhalsar hos Klinisk Mikrobiologi i Solna som är en del av KUL. Därefter skulle lösningsförslag framföras och möjligheten att införa blodprover i ett nytt automatiskt system, BD Kiestra Total Lab Automation undersökas.Verksamhetskedjan för laboratoriet analyserades genom observationer och läsning av metodbeskrivningar. Utifrån verksamhetsanalysen identifierades sedan problem. En utbildning med BD Kiestra TLA gav en översikt av hur systemet fungerar samt fördelarna med att använda det.Genom litteraturstudier samt öppna intervjuer kunde förslag på lösningar och förbättringar framföras. Resultaten behandlar de lösningsförslagen för de identifierade problemen, och sammanfattas i en tabell. BD Kiestra TLA behandlades separat med en systembeskrivning, följt av de problem som finns för införandet av blodprov och hur dessa problem kan lösas..

ISO 14001 : En genomgång av SSAB EMEA Oxelösunds miljöledningssystem

Environmental issues is now taking a growing place in society and to ensure that companies meet public expectations and do their part in working towards a sustainable development, environmental management system is said to be an effective tool (Almgren & Brorson, 2009).This case study has examined a company's environmental management system in order to find strengths and weaknesses within the ISO 14001 system. The work was carried out using interviews, document reviews and analyzes in which the three main concepts control the report ; "daily work", "audit" and "environmental aspects".The results shows that the daily work looks different depending on where you are; in the production or at the office. The audit examined all documents related to the environmental management system and the study showed that the biggest strengths was the commitment and waste handling while areas such as environmental goals and management review needed improvement. As a result of the deficiencies identified, suggestions for improvements was proposed. The investigation of the routine of the environmental aspects showed an incomplete routine where the red wire from identification to evaluation was missing.

Valkampanjer, sociala medier och unga väljare : ? En studie av hur Moderaterna och Socialdemokraterna ska nå de unga väljarna i valet2010Författare

AbstractTitle: Electoral campaigns, social media and young voters ? a studie of how Moderaterna andSocialdemokraterna are going to reach out to the young voters in the electoral campaign of2010. (Valkampanjer, sociala medier och unga väljare- en studie av hur Moderaterna ochSocialdemokraterna ska nå de unga väljarna i valet 2010).Number of pages: 45Author: Sara RothmanTutor: Göran SvenssonCourse: Media and communication studies CPeriod: Autumn semester 2009University: Division of Media and Communication, Departement of Information Science,Uppsala University.Purpose/ Aim: The aim of this essay is to research how the two largest parties in Sweden,Moderaterna and Socialdemokraterna, are going to reach out to the young voters in theelectoral campaign of 2010. I will also find out how the young voters are going to collecttheir information before the election. That information will be compared to the strategies ofthe parties, in that way I can tell if their strategies match the young voters plans ofinformation search.Material/Method: In my eximination I chose to use two informant interviewes and fourdifferent groups of discussion.

Hållbart företagande : miljöanpassning och avfallshantering hos småföretag i Sandvikens kommun

Syftet med min underso?kning var att studera studenters och la?rares uppfattningar av den flexibla utbildningen. Detta har la?nge varit ett intresseomra?de fo?r mig. Eftersom jag har erfarenheter av flexibel utbildning sa? underla?ttade det fo?r mitt arbetssa?tt genom uppsatsen.Fo?r att fo?rsta? grunden till flexibel utbildning behandlades distansutbildningens historia i bakgrundskapitlet och da?r kno?t an till hur informations- och kommunikationsteknologi kan anva?ndas i va?r tid fo?r att sto?dja denna form av utbildning.Detta genomfo?rdes med den fenomenografiska ansatsen som forskningsmetod.

Miljösystemanalys av VA-system i omvandlingsområden : fallstudie i Värmdö kommun

Wastewater handling of private sewage systems has become an all increasing matter. In Stockholm region the 90 000 private sewage systems contribute with larger phosphorus flows to the Baltic Sea than the two biggest sewage plants in the area, Henriksdal and Käppala, contribute together, even though these two plants purify wastewater from more than one million inhabitants. When summer house areas turn into areas for permanent living ? transition areas ? the load on the existing systems increases, systems that already often are unsatisfying. In those areas it is not clear what the best system choice is; On-site systems for single households; Local collective systems or Connection to central systems.

Pelletskvalitet : Test av olika råvarumixer i pelletstillverkningen vid Rindi Västerdala AB:s bioenergikombinat i Vansbro

Fuel pellets are a refined bio fuel mostly consisting of residues from sawmills and wood industry. At Rindi Västerdala AB's combined bio energy plant in Vansbro fuel pellets are produced, while the waste heat from the process is used for district heating. The pellets are produced from sawdust, wood shavings and dry wood chips that is dried, milled and pressed into small cylindrical rods. The advantage of refining the wood material in this manner is that the energy value is greater per unit volume and unit weight, thereby the cost of transportation per energy unit is reduced. Also, less storage space is needed.Pellet manufacturing is a complex process since many parameters affects the final results.

Ambition biotop och succession : en studie av nutida naturinspirerad landskapsarkitektur

Fresh Kills park and the The High line park in New York, Downsview park outside Toronto the birch landscape at Shiphol Airport have something more in common than being big new park landscapes.They all include thoughts and images about ecology. These images are neither typically nature picturesque nor typically garden stylish. In Sweden we have the biotopes of Ankarparken, the new design of Kristinebergsparken. At Chelsea Flower Show in England Swedish nature put in a garden format is winning awards. There are some new ecological influence in the air.

Förändringsanalys av administrativt logistikarbete hos tredjepartslogistiker (Gap analysis of Administrative Logistical Work at Third Party Logistical Organization)

Enligt kommunikationsmyndigheten PTS finns det cirka 10miljoner mobiltelefonabonnemang endast i Sverige. Telefonerna innehåller operativsystem där det tillåts mängder av olika sorters program. I och med att Apple 2007 introducerade sin iPhone exploderade marknaden för så kallade Nomadic Devices. En telefon som mer är tänkt att fungera som någon form av handdator. Dessa telefoners utformning och funktioner möjliggör för utvecklare att ta fram mer avancerade program än man tidigare sett för mobiltelefoner.

Termoelektrisk lagring i system med fjärrvärmeproduktion

With increased deployment ofintermittent renewable energy, such aswind and solar power, energy storagebecomes necessary to help reduceproduction peaks. Thermoelectric EnergyStorage is a method still in researchphase, which stores electricity in hotwater at a temperature of 120 ° C. Thisthesis aims to examine whether theThermoelectric Energy Storage would bepossible to integrate into existingpower generation such as a combined heatand power plant, and how the technologypotentially could function in theelectricity market. ThermoelectricEnergy Storage consists of a chargingprocess and a discharging process, bothoperating by the working fluid CO2. Toincrease the efficiency of theThermoelectric Energy Storage, wasteheat from the district heating networkis integrated.A model of the Thermoelectric EnergyStorage has been developed and it wascalculated by thermodynamic propertiesof the working fluid, CO2, in thevarious process steps.

Materiallogistik vid innerstadsprojekt : En fallstudie av ett innerstadsprojekt i förbättringssyfte av materialflödet

The construction industry is always looking for ways to make the work more efficient aswell as minimize the waste of money in general. At the same time the industry is showing alow awareness of logistics which has to increase in order to improve the industry in thesekind of questions. Projects located in the inner city have high demands on the logistic andthe handling of material due to the so often limited space for storages of the material. Dueto this the purpose of this report is true a case, study and analyze what kind of factors thereis to take into consideration during the materials way from the supplier to the workstationin a project located in the inner city. The data for the report was collected with the help of acase study, and in three different ways.

Från alger till biodiesel - Den italienska drömmen?

This project aims to investigate whether algae can be used for biodiesel production in Italy. Algaes are a good option since they are fast growing and do not occupy arable land. The aspects that have been considered are growing, harvesting, which algae strain that is most suitable, extraction of oil, the production of biodiesel and where in Italy this could be possible due to climate. Cost? and energy calculations have been made to investigate if biodiesel produced from algae would be profitable. During the production of biodiesel there are several residues obtained. When the oil has been extracted from the algae, biogas is produced from the residual biomass by anaerobic digestion and then the electricity that can be produced is supplied to the production of biodiesel.

Planerat kärnbränsleförvar i Forsmark : - med fokus på episyenit

It takes a very long time for ionizing radiation of used nuclear fuel toreturn to a natural background level, for this reason one of the requirements for theselection of the location of a repository was that the environment as well people'shealth would be protected from the harmful effect of radioactivity. This requirementmeans that the waste must be isolated in a geological formation. In Sweden therepository will be built in the crystalline bedrock. The location for the Swedish nuclearfuel repository at nearly 500 meters depth at Forsmark in Östhammar was decided 3June 2009. The repository will be located at Söderviken, close to the Forsmarknuclear power plant in a 1.90 billion year old bedrock that will accommodate 12,000tons of spent nuclear fuel.

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