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1174 Uppsatser om Waste prevention - Sida 8 av 79

Energy efficient storage of biomass at Vattenfall heat and power plants

Storage of biomass is often associated with problems such as heat development, dry matter losses and reduction of fuel quality. The rise in temperature can potentially cause a risk of self-ignition in the fuel storage. Moreover, emissions from storage piles can cause health problems in the surrounding. The dry matter losses and reduction of fuel quality can have economical effects. The aim of this thesis project is to develop guidelines on how to store large amount of biomass at Vattenfalls heat and power plants in an optimal way.

Rening av avloppsvatten med anaerob membranbioreaktor och omvänd osmos

This master's theses was carried out on assignment from Stockholm Vatten AB as a part of a project developing new waste water treatment techniques. The goal of the theisis has been to evaluate an anaerobic membrane bioreactor for treatment of waste water from Hammarby Sjöstad. The bioreactor has not been heated and the main interest has been to study the gas production, power consumption and the reduction of organic matter and nutrients.The system has been completed with a reverse osmosis unit and a total of four batch runs have been made with good results. The use of reverse osmosis allows nutrient in the waste water to be reintroduced into circulation as the reverse osmosis concentrate can be used as crop nutrient.The membrane unit is of VSEP ("Vibratory Shear Enhanced Processing") type and an extensive membrane test has been conducted. This so called L-test helped determine the most suitable type of membrane for the system to allow a higher ±ux and thus lower power consumption.

Miljöeffekter av alternativa system för behandling av hushållsavfall i Santiago, Chile : en jämförelse mellan deponering och förbränning med energiutvinning

This report was written by Lisa Bengtson and Hanna Paradis and describes the degree thesis "Environmental impacts of solid waste treatment in the Metropolitan Region, Santiago, Chile ? a comparison between current system and incineration with energy recovery". The purpose of this thesis was to investigate if incineration with energy recovery could be motivated through an environmental perspective as an alternative to landfilling of solid waste in Santiago, Chile. The study was performed with Life Cycle Analysis as a theoretical base. In Santiago, situated in the thirteenth region of Chile, Región Metropolitana, lives 6,5 million inhabitants. The major part of the solid waste produced in the region is landfilled on three different sanitary controlled landfills situated outside the city center.

Norra Djurga?rdsstaden som nollstad : En studie av miljo?projektets sista etapp och dess potential

All around the world more and more people move from rural areas to live in the cities. Because of this, the urban areas have become an important part in the debate about the effects on the environment and sustainability. In many countries word wide initiatives have been taken to build sustainable cities and eco cities, the Stockholm Royal Seaport is one example. The vision for the district is to become a world class sustainable city based on the three dimensions of sustainable development: social, economic and ecologic. The municipality of Stockholm has set requirements for the buildings? energy usage, emissions and amount of waste generated during the building process.

FN och EU ? två aktörer inom det konfliktförebyggande området - en studie av FN och EU: s konfliktförebyggande åtgärder i Makedonien

Conflict prevention is a term which has gained much influence during the last decades. To prevent conflicts from occuring have both humanitarian and economic incentives as the cost for war are much greater than the cost of acting preventive. To act in this matter has been regarded a priority for the United Nations during several years, and the European Union have also expressed a wish of playing a more active part. The essay compares the actions taken by the international organisations in Macedonia, a country which headed toward a violent conflict. The UN acted through the mission UNPREDEP and the EU through the mission of Concordia.

Jämförelse av fallhändelsedokumentation före och efter införandet av en kvalitetsnorm för fallprevention

ABSTRACTAim: The aim of this study was to examine differences in the documentation of the case incident reports, before (FRP) and after (FRE) the introduction of a quality standard for fall prevention in the geriatric departments at a Swedish University hospital. Method: 51 fall incident reports were collected before the introduction of quality standards for fall prevention and 63 after. Differences in documentation between the fall incident reports were analyzed with a Chi-2 test. Results: Number of case incidents in which the use of the alarm mat was documented increased after the introduction of quality standards for fall prevention and documented use of shoes and walker decreased. The majority of all documented case incidents occurred inside the patient room according to both FRP and FRE.

Spillvärmeåtervinning

SAPA´s resource of waste heat is the basis for this thesis to investigate the possibility of energy assets in their cooling water and possible uses for it. The energy in the waste water is greater than the current need which has three uses which are (1) heating the factory, (2) converting liquid propane to propane gas and (3) local domestic heating. The average energy load that is available is 1, 7 MW and the average temperature in the cooling water is 41°C. The total energy load at dimensioning out side temperature is approximately 1,6 MW for the three current uses. The temperature is currently too low to be used directly in the existing systems so an upgrade is needed.

The school as an arena for alcohol prevention : A study on how alcohol prevention / promotion can be carried out in upper level of compulsory school

The consumption of alcohol has stabilized in Sweden 2007, after several years of high increase. Despite the stabilization of the consumption the avaliability of alcohol has been raising, which constitute a big and in future years likely an increased risk in health among young people. The aim of the study was to describe how the staff on a secondary school works among pupils with alcohol prevention and promotion. Aquired knowledge are received from litterature, scentific articels and Internet to strength the relevance of the study. The school is an important arena in the work with alcoholprevention among pupils.

Anaerob psykrofil behandling av hushållsavloppsvatten i UASB : Utvärdering av kapaciteten hos en två-stegs UASB-reaktor för behandling av hushållsavloppsvatten

Hammarby Sjöstad is a new district in southern Stockholm. A main objective with the Sjöstad project was to halve the environmental impact compared to other construction work. The environmental goals involve a halved water consumption rate, a local treatment of storm water and trials aiming to extract nutrients from the waste water. Sjöstadsverket is an experimental treatment plant used for testing new treatment processes for domestic waste water from Hammarby Sjöstad. The results are to be compared with the conventional process used at Henrikdals treatment plant today.

Återvinning av industriell restvärme som värdeskapande process : En fallstudie på SSAB EMEA i Borlänge

The industrial sector accounts for a large share of greenhouse gas emissions. To reduce its negative impact on the environment is crucial in the quest for a sustainable future. In discussions of the industrial sector's impact on the environment guidelines have been highlighted as a tool to assist the industries in their efforts to change the relationship between the consumption of energy and production. This by improving energy efficiency and a shift to the best available technology. During the past 30 years the steel industry has reduced its energy consumption per ton of steel produced by 50 percent.

Waste Management : Förbättringsförslag av återvinningsprocessen inom hemelektronikbranschen

Titel: Waste Management ? Förbättringsförslag av återvinningsprocessen inom hemelektronikbranschen. Bakgrund: I en bransch som kännetecknas av snabb teknologisk utveckling är det viktigt att se till att de produkter som kommer ut på marknaden också tas om hand på ett bra sätt i slutet av sitt funktionella liv. Hur ser återvinningsprocessen hos företagen ut idag och vad kan göras för att minska de växande problem som framkommer i samband med den ökade konsumtionen? Genom att granska fenomenet Waste Management avser uppsatsen angripa slöseri i logistikflödet och finna förbättringar av dagens återvinningsprocess av uttjänta hemelektronikprodukter.

Prevention mot spridning av resistenta bakterier på särskilt vårdboende

Bakgrund: Vårdboende har setts vara en reservoar för resistenta bakterier, och prevention är av stor vikt, då äldre har ökad risk att drabbas. Sjuksköterskans kunskaper om hur dessa bakteriers sprids, kan utgöra grunden för hur arbetet läggs upp. Syfte: Syftet med denna studie var att beskriva prevention mot spridning av resistenta bakterier på särskilt vårdboende. Metod: Studien genomfördes som en allmän litteraturstudie. Resultat: Införandet av handhygienprodukter, skyddshandskar, skyddsrockar, screening och städrutiner var effektiva preventionsmetoder.

Sjöundersökning av Naalojärvi

LKAB is an international high tech mineral corporation and a world leading manufacturer of refined ironore products for steal manufacturing and other mineral products destined other industries. LKAB is an international corporation with companies world wide, with it?s main location in the north of Sweden, which is where the iron ore mines and the refining works are located. LKAB?s iron refining process in Vitåfors, Malmberget, is a source of great amounts of waste-rock.

Analys av energiförbrukning, Akzo Nobel Functional Chemicals AB

The main purpose of this project was to make a survey of the steam and electricity consumption at Akzo Nobel Functional Chemistry AB and give suggestions of how to minimize them. These three different areas were focused on. First to make a survey of all the most important consumers, second to find the electricity consumption of the air compressors and the amount of waste heat produced from them. The third area was to calculate a model of how much fresh water that is used during a cooling sequence in the water based heating/cooling system of the reactors and give a suggestion of a suitable reuse for this water.The main result is a total survey of the energy consumption in steam and electricity. The survey shows that the second largest group after drying is heating of ventilation which gives big potentials of reducing the total steam consumption if there is a way of being self supporting in ventilation heat.

Prevention- ett sätt att förhindra uppkomsten av trycksår

Trots att stor kunskap finns vad det gäller riskfaktorer, prevention, bedömning och vård fortsätter prevalensen av trycksår att stiga oroväckande. Trycksår fortsätter att förbli ett betydande hälsoproblem och en signifikant ekonomisk belastning för sjukvården runt om i världen. Syftet med litteraturstudien var att ur ett omvårdnadsperspektiv belysa hur uppkomsten av trycksår kan förebyggas. I studien framkom att ett av de viktigaste aspekterna av trycksårsprevention är att en korrekt riskbedömning av trycksår görs så att förebyggande åtgärder kan sättas in tidigt till de patienter som är i behov av det. Det finns en rad olika bedömningsinstrument, men de flesta av dem har inte fått sin validitet beprövad i någon undersökning, och utav de som har prövats visar ingen på en tillräckligt hög tillförlitlighet.

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