Muddringsprojekt är en global företeelse och görs av flera olika anledningar, till exempel för miljömässiga aspekter och för breddning av farleder. För att få en hållbar utveckling är det viktigt att finna bra lösningar på frågan hur förorenade sediment skall hanteras . I Mälaren kommer olika muddringsprojekt att genomföras för att bredda farleden från slussen i Södertälje till hamnarna i Köping och Västerås. Muddringsprojekten skall genomföras av Sjöfartsverket, Köpings kommun och Västerås stad. En metod för att omhänderta muddermassorna är att stabilisera/solidifiera dem genom att blanda i ett bindemedel bestående av en blandning av cement, masugnsslagg och aktivt kol och låta dem härda.

The fungus Gremmeniella abietina causes damage to conifers that can lead to tree death. In 1999 and 2001 the pathogen caused severe attacks in Sweden, where about 500 000 ha of pine forest were affected. Trees of all ages were attacked, but mainly forests between 30-60 years that were ready for their first commercial thinning. After recommendations from the forest agency, sanitary fellings were made to trees that had more needle loss than 85%, a total of about 50 000 ha. Economic losses have been estimated to more than one billion SEK.

This degree project studied surface waters on Kåbo Golf Course in Uppsala, Sweden, with the aim of determining the status of the water and how it is affected by the activities of the golf club, and to obtain suggestions of measures to create better conditions for the water environment on and around the golf course. The project forms part of the environmental protection work of Kåbo Golf Club, which is working towards achieving environmental certification from the Swedish Golf Association (SGF). The study is based on literature studies and quantitative and qualitative field studies of water on the golf course, with the focus on environmental factors identified as being important for the golf industry and on strategic environmental goals developed by SGF. The number of open water bodies in the Swedish landscape has substantially declined during the past 200 years, so it is important to save those that remain. This study showed that the surface water at Kåbo Golf Course is an important element in the surroundings since the area contains few wetlands, which can be a habitat for large numbers of species. The stream and ponds on Kåbo Golf Course also have the important function of serving as water hazards in the game and adding difficulty and variety to the course. Since Kåbo Golf Club wants its surface waters to look aesthetically appealing, extensive algal growth and drying up of ponds during parts of the year are regarded as problems.

Dagvatten kallas det regn- och smältvatten som rinner av från hårdgjorda ytor i stadsmiljön. Detta vatten för ofta med sig stora mängder av föroreningar som tungmetaller, näringsämnen och oljerelaterade ämnen, vilka kan göra stor skada om de når recipienter. För att rena dagvattnet och därmed minska föroreningsbelastningen byggs det allt fler öppna dagvattensystem som t.ex. våtmarker och dammar. Studier har visat att dessa system har hög reningseffekt och dessutom är de kostnadseffektiva.

Regnvatten, smältvatten och spolvatten som rinner av från hårdgjorda ytor kallas dagvatten. Dagvatten är ofta förorenat av tungmetaller eller svårnedbrytbara organiska ämnen, som kan göra stor skada om vattnet inte renas innan det når recipienten. I dagsläget finns det inga nationellt fastslagna riktvärden för föroreningshalter i dagvatten. Dagvattengruppen på Vattenfall AB Värme Uppsala har tillsammans med miljökontoret i Uppsala tagit fram riktvärden för föroreningshalter från kvarteret Brännugnen, som området som studerats i detta examensarbete kallas. Vattenfall har idag problem med att klara dessa riktvärden för bland annat metaller i en del av kvarterets dagvattenbrunnar.

During the last few years the presence of high arsenic (As) concentrations in ground water has been of major concern both internationally and in Sweden. Much evidence has been reported about toxic effects caused by arsenic. The carcinogenic effects and the possibility to measure the toxic impacts at low concentrations made the World Health Organisation (WHO) to reduce the guideline value from 50 to 10 ?g l-1 in 1993. In Sweden the corresponding reduction was implemented in 2003. Several surveys in Sweden have shown that high arsenic concentrations may occur in ground water.

In our globalized society massconsumption is widespread. However there is a trend showingthat people are starting to re-use clothes instead of buying newly produced garments. Reasonsfor buying secondhand clothing are many. During the 1950s people strived to look likeeveryone else but in the 1960s this changed. Subcultures grew stronger.

Outdoor housing of horses? best fulfils the horses? need for physical activity and it is an alternative to the more cost and energy demanding indoor housing in stables. Furthermore, if outdoor housed horses have access to shelter they can generally cope well with adverse weather conditions such as high or low ambient temperature, heavy rain or strong winds. In this study, the daytime shelter-seeking behaviour of three groups of horses housed outdoors was studied during the summer. The aim was to evaluate whether shelter use is related to weather variables (e.g., ambient temperature and wind speed) and insect harassment. The shelter-seeking behaviour was studied for three different groups of horses: Group 1) eight individually housed horses in paddocks that had access to three different shelter types (C: closed on three sides with roof, R: open on three sides with roof, W: closed on three sides without roof), Group 2) 25 group housed mares with foals on pasture with access to shelters C, and Group 3) ten mares without foals on pasture without access to shelter. Each group was studied for eight days.

The aim of this work was to find out what potential contaminants from roads, residential area and businesses within Svedens industrial area that can affect groundwater quality and quantity. Data collection was from SGU, VISS, internal material from Gävleborg county Administrative Board and Gävle municipality archive. GIS software ArcGIS was used to create the map images in the work. The studied area is located approximately ten kilometers west of Gävle city and consists of the esker Valboåsen, which is a glacifluvial deposit that in its central parts consist of coarse material that is overlaid by sand, clay and silt. North of esker Valboåsen there are the river Gavleån which has an inflow to the groundwater in the esker. This inflow represents the largest part of the groundwater recharge.

Since 1993 the Swedish Forestry Administration conducts a nation-wide inventory of wood-land key habitats covering all forest land in Sweden. The inventory aims at mapping and describing habitats where redlisted species occur or can be expected to occur. According to the inventory stand history is crucial to the presence of red-listed species. However, the current knowledge of stand history in woodland key habitats is very limited. The purpose of this work is to describe stand history in woodland key habitats, i.e. fire history, human activities - mainly cuttings - and structural changes.

In the tropics, logging and wild fire can result in degraded secondary forests with lower biodiversity than in the natural forest. One way to limit forest degradation is to rehabilitate the present large areas of secondary forests. However, there is a lack of knowledge concerning the ecology of tropical tree species and further studies would be advantageous for future rehabilitation efforts of degraded rainforest. The objective of this study was to investigate how mother trees in secondary forest and different site factors affect the abundance and spatial distribution of natural regeneration of non-pioneer tree species in a tropical rainforest in Sabah, Malaysia. The study took place in the INIKEA Forest Rehabilitation Project area, which suffered from wild fire in 1983 and has been selectively logged over both before and after the fire. Natural regeneration and site variables were inventoried in plots, while mother trees were inventoried in the whole survey area.

Textilindustrin står inför stora utmaningar när det kommer till forskning, utveckling ochproduktion på ett miljöanpassat och socialt ansvarsfullt sätt. Ökat miljömedvetetande hoskonsumenten har lett till ökat intresse och möjlighet för företaget att arbeta mot ett hållbartföretagande.Examensarbetet är skrivet som en del av kandidatexamen i textilingenjörsprogrammet föruppdragsföretaget BlåKläder AB och utfördes för att även kunna fungera som ett underlag förandra företag i avsikt med att påbörja/utveckla sitt arbete med socialt ansvarstagande.I arbetet presenteras miljöpåverkan av en arbetsbyxa i bomull från råväv till distribuering.Fyra miljöbelastande kategorier har tagits med i undersökningen, där mängden av kemikalie,vatten- och energiåtgång samt koldioxidutsläpp räknades ut per arbetsbyxa av minimumorder. Sammanställning av resultat visar att det används 2,5 kg kemikalier, 10,3 liter vatten,756 Wh energi och det släpps ut 0,4 kg kodoxid vid tillverkning av en arbetsbyxa.Rapporten behandlar och beskriver produktion av en rå bomullsväv medflamskyddsbehandling. Processflödet för hela behandlingsförloppet analyseras i arbetet därbåde kemikalier, energi- och vattenåtgång tas upp vid varje delprocess. Koldioxidutsläppanalyseras som en särskild del av rapporten och omfattar de direkta utsläppen av tung lastbiloch fraktfärja.

Drinking water is produced from raw water and is either from groundwater or surface water. This thesis aims to find out if the cleaning process of raw water is sufficiently effective. This is important because consumers are otherwise at risk of waterborne infection caused by pathogens. There are three groups of pathogens; bacteria, virus and parasite. These have different characteristics which mean that they require different water treatment to be separated.

Drinking water is produced from raw water and is either from groundwater or surface water. This thesis aims to find out if the cleaning process of raw water is sufficiently effective. This is important because consumers are otherwise at risk of waterborne infection caused by pathogens. There are three groups of pathogens; bacteria, virus and parasite. These have different characteristics which mean that they require different water treatment to be separated.

The rainforests of the world are important not only to the countries in which they grow but to the world as a whole. They influence oxygen and water circulation as well as carbon sequestration which in turn affect global radiation and global warming. The forest also have great value and in Malaysia as in many other tropical countries large volumes are harvested which leaves great areas of degraded forest with little growth and biological diversity. Due to their low financial value these forests are often transformed and used for other purposes than forestry such as oil palm plantations. The trees are often transported out of the forest using large bulldozers. They are heavy which causes compaction of the forest floor and during transport the top soil layers are moved to improve mobility.