Kashif Shamim Siddiqui<\/p>\n
Eventually, the collected waste reaches the city\u2019s landfill sites, principally Jam Chakro and Gond Pass. This is where the public often assumes the story ends. It does not. A landfill is not a disappearance machine. What is buried continues to undergo physical and chemical changes, producing consequences that can extend beyond the boundaries of the disposal site.
\nOrganic waste decomposing without sufficient oxygen can generate methane, a potent greenhouse gas. Karachi-specific research has estimated a substantial greenhouse-gas burden from waste disposed of at its dumpsites. Landfills can also generate leachate-the polluted liquid produced when water passes through decomposing waste. If not properly contained and treated, leachate can threaten soil and groundwater. Research around Karachi\u2019s landfill areas has raised concerns about groundwater quality and the environmental implications of landfill leachate.
\nThis is particularly important because landfill impacts do not necessarily remain confined to the landfill. Soil, groundwater, air and nearby communities can become part of the environmental equation. The people living around disposal sites may face odours, smoke, insects and other nuisances, while uncontrolled decomposition and burning can add further pollution. The issue is therefore not whether Karachi needs landfill sites. It does. The issue is whether landfill should remain the principal destination for materials that could have been recovered earlier.
\nInternationally, the direction of modern waste management has increasingly been towards reducing waste at source, reusing materials, recycling, recovering organic resources and using landfills only for the residual fraction. Karachi does not need to reproduce another country\u2019s system overnight, but it can adopt the underlying principle: the best tonne of waste is the tonne that never needs to be buried.
\nThat requires a change at two ends of the system. At household level, residents can reduce unnecessary packaging, avoid disposable items where alternatives exist, separate organic waste from dry recyclables and ensure that paper, plastic, metal and other recoverable materials do not become unnecessarily contaminated. These actions may appear small, but multiplied across millions of households, they can significantly change the composition of the waste reaching municipal collection systems.
\nGovernment, meanwhile, has to provide the infrastructure that makes responsible disposal possible. Karachi needs systematic source segregation, material-recovery facilities, modern recycling plants, composting facilities and properly designed systems for converting suitable organic waste into biogas or other useful products. The objective should not be to find larger places to dump larger quantities. It should be to reduce the quantity that needs dumping in the first place.
\nThere is also an economic opportunity hidden inside this crisis. Organic waste can become compost or biogas. Paper, plastic, glass and metals can return to productive use. Even the waste that cannot be recycled can be assessed for appropriate energy or material recovery before disposal. Such a system would create jobs and industries while reducing pressure on landfills. Waste would begin to be treated as a resource rather than simply a municipal burden.
\nKarachi cannot indefinitely collect more, transport more and bury more. If the city\u2019s waste stream continues to grow, tomorrow\u2019s challenge will not merely be finding more trucks or more land. It will be managing the environmental and financial consequences of everything those trucks carry. The solution does not begin at Jam Chakro or Gond Pass. It begins much earlier-in the household, at the collection point, on the truck and at every decision about what should be recovered and what should finally be buried.
\nThe question Karachi should therefore ask is not simply, \u201cWhere will we put our waste?\u201d It should be, \u201cHow much of it should ever reach there?\u201d The difference between those two questions could determine whether Karachi continues to bury its waste problem-or finally begins to reduce it.<\/p>\n
The author is a rights activist and freelance journalist<\/p>\n
Concluded<\/p>\n","protected":false},"excerpt":{"rendered":"
Kashif Shamim Siddiqui Eventually, the collected waste reaches the city\u2019s landfill sites, principally Jam Chakro and Gond Pass. This is where the public often assumes the story ends. It does not. A landfill is not a disappearance machine. What is buried continues to undergo physical and chemical changes, producing consequences that can extend beyond the […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[13914],"class_list":["post-567280","post","type-post","status-publish","format-standard","category-article","tag-kashif-shamim-siddiqui"],"yoast_head":"\n