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Urban organic waste management in Karachi, Pakistan

机译:巴基斯坦卡拉奇的都市有机废物管理

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Inadequate collection and disposal of waste poses a serious health risk to the population and is an obvious cause of environmental degradation in most cities of the developing world. Mixed municipal solid waste is dumped either indiscriminately in the neighbourhood or, if collected by a waste collection service, disposed of in uncontrolled dumpsites. The organic fraction of this waste, often contributing to more than 50% of the total waste amount, threatens the health of residents as the indiscriminate waste dumps attract rodents and other disease carrying vectors. Organic waste is also responsible for pollution of soil and water bodies through leachate, and in the process of uncontrolled anaerobic degradation it contributes to global warming by the production of methane. A possible step in mitigating these detrimental effects is enhancing resource-recovering activities of the organic waste fraction. An obvious treatment and recovery option for organic waste is composting. However, before strategies can be developed on how to proceed, it is necessary to understand the existing organic waste management practices and try to assess current and potential markets for the converted organic waste.
机译:废物收集和处置不足对人口构成严重的健康风险,并且是发展中国大多数城市环境退化的明显原因。混合的市政固体废物在附近不分青红皂白地倾倒,或者如果由废物收集服务收集,则在不受控制的垃圾场处理。这种废物的有机分数,通常有助于总废物量的50%以上,威胁到居民的健康,因为滥用废物倾料吸引啮齿动物和其他疾病携带载体。有机废物也负责通过渗滤液污染土壤和水体,并且在不受控制的厌氧降解过程中,它有助于通过生产甲烷的全球变暖。减轻这些不利影响的可能一步是提高有机废物部分的资源回收活性。有机废物的明显治疗和回收选择是堆肥。但是,在如何开发如何进行策略之前,有必要了解现有的有机废物管理实践,并试图评估转化的有机废物的电流和潜在市场。

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