Essays about: "phosphorus"
Showing result 6 - 10 of 422 essays containing the word phosphorus.
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6. Lifetime CostEffectiveness of Constructed Wetland and Rain Garden Facilities in Relation to Expected Treatment Performance
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : The purpose of this thesis is to investigate the cost effectiveness of two different stormwater control measure (SCM) facilities, namely a constructed wetland in Boden and a rain garden in Gothenburg (both Sweden), in relation to treatment efficiency and contributing catchment area. The study approach involved collection of data, construction, and maintenance activities with their respective costs, for the two stormwater control measures from commercial and literature data. READ MORE
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7. Effects of tillage and straw treatments on earthworm abundance : study in two Swedish long-term field trials
University essay from SLU/Dept. of Soil and EnvironmentAbstract : Earthworms have several functions in the soil, for instance redistribution of organic matter and enhancing plant available nutrients. Earthworms are divided into three ecological groups, with different functions in the soil. The groups are: anecic, endogeic and epigeic. READ MORE
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8. Towards Water Resource Recovery Facilities : Environmentally Extended Techno-Economic Assessment of Emerging Sewage Sludge Management Technologies in Sweden
University essay from KTH/Hållbar utveckling, miljövetenskap och teknikAbstract : Municipal sewage sludge (MSS) management varies widely between countries and legislative regimes. Within the European directive for sewage treatment France applies over half of MSS to arable land, while The Netherlands has banned the practice (Kelessidis et al, 2012). READ MORE
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9. Pyrolysis of Municipal Sewage Sludge to get a phosphorus rich char residue for soil improvement
University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomiAbstract : Sewage sludge is a byproduct of wastewater treatment plants. It is a kind of waste. however, it contains several valuable nutrients like phosphorous and nitrogen that are used to rich the soil as a fertilizer compound. READ MORE
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10. Nutrient flow on agroforestry farms in the province of Son La in northwest Vietnam
University essay from Uppsala universitet/VindenergiAbstract : The population in the high mountains of the northwest provinces of Vietnam belongs to the poorest population in the country. Among the reasons behind this are the high frequency of minority groups in the region and the infertile soils of the steep slopes. READ MORE