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5.5 SOLID DOMESTIC WASTE Domestic waste sources can be broken down into various categories: sewage (treated and untreated) run-off from roads, lawns landfill air (incineration, cars) paper, glass, metal, plastics, packaging organic waste from the kitchen or garden anything not related to industry One well-established (but in some instances controversial) strategy for managing solid domestic waste such as paper waste, is recycling vermicomposting When compared with soil, worm casts also contain : 5 7 1.5 times more nitrogen; times more phosphorus; times the calcium; 11 3 times more potassium; times more exchangeable magnesium. Comparison of recycling versus virgin paper production and incineration Area for comparison/ Process Recycling Virgin Paper and Incineration Energy in the process Less (could be renewable) -25% more but could be renewable - incineration generates energy and replaces fossil fuels (toxin removal) Energy in transport More -less since it tends to be shorter distances but not always the case Pollution -toxins to landfill -CO2 from transport supports forest growth - toxins to landfill - CO2 from transport and emissions support forest growth -air and water pollution from pulp and paper other -inhibits attempts to use incineration as alternate energy source - what could be better forest management than to reduce the number of trees needed to be cut? - stimulates responsible forest management - inhibits attempts to improve energy efficiency Domestic Waste Incinerator Domestic Waste in a Landfill