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Integrated Waste Management Volume I Part 4

Tham khảo tài liệu 'integrated waste management volume i part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 96 Integrated Waste Management - Volume I 2001 and 2002 which is far in excess of 2 population growth. This report reflects that 90 of waste generated in the City of Cape Town is landfilled. In 2002 a total of 1 722 807 tonnes of waste was disposed at the six landfills and this showed an increase of 7.3 as compared to 1 596 000 tonnes disposed in 2001 which was an increase of 6.5 from 1 493 000 tones generated in 2000. Waste landfilled consists of 30 household waste 15 sewage sludge and 55 industrial and commercial waste. The amount of waste recycled in 2002 was 2 as a result of informal salvaging activities. This percentage of recycling will increase as the city is currently busy with the material recovery facility plans. The City of Johannesburg s State of Environment Report 2003 shows that there are six landfills with a total of 1 560 400 tonnes of waste disposed annually which shows that there is more waste disposed to waste disposal sites in the City of Cape Town as compared to the City of Johannesburg. 5. Strategies to improve solid waste management system 5.1 Waste minimisation and recycling It has been observed that many countries such as the USA have been engaged in waste minimization strategies through waste recycling. This has been confirmed by the statistical records from 1960 to 2005 wherein recycling increased from 6 4 to 32 6 . According to the information on Table 2 recycling has diverted almost 82 million tons of recyclable material away from disposal. Typical materials recycled include batteries recycled at a rate of 99 paper and paperboard at 52 and yard trimmings at 62 . These materials have been recycled through the curbside programs drop off centers buy-back programs and deposit systems. No Year Total waste in tons Total waste recyclable tons Recycling rate 1 1960 88 1 million 5 6 million 6 4 2 1970 121.1 million 8 million 6 6 3 1980 151 6 million 14 5 million 9 6 4 1990 205 million 33 2 million 16 2 5 2005 251 million 82 million 32 6 Source .