Technical Development of Waste Sector in Sweden: Survey

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MASTER’S THESIS IN ENVIRONMENTAL STRATEGIES RESEARCH Hydropulping Studies were conducted using waste bagasse as the sole carbon source. The process involves size reduction followed by a mild alkaline oxidation treatment before aerobic oxidation. The bagasse is slurried in water, mixed with simple nutrient salts mixture and then fed to the reactor from where it is harvested. The single cell protein produced has a crude protein content of 50 to 60%. hydropulp the waste and recovers paper fiber from refuse. The method is being used in a full scale plant of 150 tpd capacity operating at Franklin, Ohio, USA. The method is suitable for processing of paper waste. Paper waste Multip le Pilot scale Very limited SWM Manuals (2000) KUNGLIGA TEKNISKA HÖGSKOLAN 38 | P age
MASTER’S THESIS IN ENVIRONMENTAL STRATEGIES RESEARCH Table 6: SWOT Analysis of the Emerging Waste Treatment Technologies Methods Strength Weakness Opportunity Threats Dry Composting Biological process in a confined or open area. Only biodegradable waste Opportunity of resource recovery Possibility to get nutrient-rich organic can be managed by this and making bio-fertilizer. Biogas can fertilizer and soil conditioner from the waste. Dried material can be extracted biogas via anaerobic digestion. process. Emission control from the system is difficult. be generated from the dry waste. Sanitary Landfilling Gasification Pyrolysis Plasma Arc Bio-chemical conversion MSW Pyrolysis- Gasification Bio-reactor Hydrolysis process Conversion of solid wastes to protein Hydro-pulping of Natural decomposition process in confine area and can handle different types of waste with larger volume. Waste can be managed in controlled environment with low environmental impact. Almost all types of waste fractions can be treated with gasification process. Low final residue is generated from the processes. Different waste categories can be treated by Pyrolysis process with lower volume of final residue. Almost all types of waste categories can be treated with lower disposable residue. Integrated waste treatment process with MBT with anaerobic digestion. Hybrid thermal process with large volume of different waste treatment capabilities. Landfill with MBT facilities. Higher waste volume can be managed by this process compare to traditional landfill. Chemical processes of food/fruit waste to ethanol production. Huge land area is needed and emission control is difficult and costly. Long time is required to reclaim the landfill land restoration. High investment cost and still developing technology for MSW. Higher investment cost and technology not yet matured enough for MSW. New technology for MSW management and high investment cost. Limited waste treatment capacity; organic waste can be treated by this technology. Emerging technology with higher investment cost. Pre-processing of waste is required. Very new technology with limited problem solving capacity. Conversion of waste to nutrient. Experimental stage with lower problem solving potentials. Resource recovery and reuse in paper and pulp industry. Only paper waste can be managed by this process. Opportunity to recover biogas from the landfill. Opportunity to manage waste more environmental friendly way if sanitary landfill fully functioned. Energy and heat can be recovered from the gasification of MSW. Opportunity of resource and energy recovery. Opportunity of higher energy and heat recovery option. Energy and resource recovery can be possible. Opportunity of energy and resource recovery. Higher volume of biogas can be recovered from the bio-reactor. Opportunity of ethanol production. Opportunity of having nutrient recovery from waste. Resource recovery. Potential threat to water and soil contamination for poor management. Emissions to the atmosphere are a great threat for environmental degradation. Threat to global warming potential, soil and water pollution due to poor maintenances. Environmental impact through emission to the atmosphere and final residue Potential environmental threat from emissions. Threat to environmental impact from the emission. Potential environmental threat from emissions to the atmosphere and water. Potential environmental threat from air and water emissions. Environmental threats due to emissions from the technology. Water contamination. Unknown Threat of environmental pollution from chemicals and waste water. KUNGLIGA TEKNISKA HÖGSKOLAN 39 | P age
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Technical Development of Waste Sector in Sweden: Survey

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