New Delhi: In the national capital Delhi, around 13 km away from the India Gate, there stands a 65 metres (213 feet) tall mountain, a mountain of garbage in the Ghazipur area. The height of the waste accumulated at the Ghazipur landfill is just eight metres short of the iconic Qutub Minar, which is 73 metres high. The landfill site, commissioned in 1984 and overflowing since 2002, exceeded its capacity two decades ago but garbage continues to get dumped here. This is not the story of Ghazipur alone. There are two more such landfills in Delhi and in other cities as well.
Interestingly, these sites – Ghazipur, Okhla, and Bhalswa – are actually dumpsites and not sanitary landfills. What is the difference? Well, a sanitary landfill or a scientifically developed landfill is designed to take in only residual solid waste and inert waste. Elaborating on the same, Subhasish Parida, Programme Manager, Centre for Science and Environment said,
A scientific landfill needs to have a gas collection system because some organic materials may also come to the landfill along with inert material which has the potential to generate methane gas. There has to be a system to collect and treat leachate (water that has percolated through a solid and leached out some of the constituents). The municipal corporation has to monitor ground water, surface water, and ambient air, ensuring the landfill is not causing any kind of pollution.
Why Open Dumping Of Waste Is A Health Hazard
A dump site is essentially a piece of land utilised by a local body for the disposal of solid waste without following the principles of sanitary land filling. Talking specifically about Delhi, Richa Singh, Landfill expert from the Centre for Science and Environment said,
These landfills are just a piece of land used for dumping waste as a result there is no barrier layer at the bottom, no facility to treat the hazardous liquid that is generated because of the waste and also gases which are emitted from the landfill. During this entire process of dumping the waste, there is a lot of leachate that is produced, along with a lot of gasses such as H2S gas (Hydrogen Sulfide or sewer gas), which is carcinogenic in nature, and the methane gas, which has huge global warming potential.
Ideally, there has to be a system to collect leachate and flare the methane gas into the air so that the landfill does not catch fire. However, that does not seem to be the case with landfills in Delhi at least. Further elaborating on the impact of dumpsites being used as a landfill, Ms Singh added,
The people who are living in the close proximity of 5 km, they are exposed to a lot of different types of contamination. As we, all know that the ground water is the actual source of drinking water, now even if you do not use that water for drinking purposes then people living near the vicinity use it for bathing and cleaning their utensils. As a result, they are exposed to developing many acute and chronic diseases.
Are Sanitary Landfills A Good Option To Manage Waste?
Sourabh Manuja, a Delhi-based waste management specialist believes that scientific landfills are not bad. He says,
Scientific landfills just occupy useful spaces and are examples of a linear economy concept. Scientific landfills are capsulated buckets that contain waste, we capture landfill gas and utilise it, collect leachate and treat it and of course, when it gets filled up these have to be scientifically closed, capped and monitored. In long run, these are way more expensive than processing of waste.
Experts’ Take On Waste Management In India
The problem of waste in India is huge. With the increasing population, the amount of waste generated every day is bound to increase. Increasing the number of landfills and throwing waste there is not a solution as landfills can take in a limited amount of waste. Unless, we want a situation like Delhi where Ghazipur landfill often catches fire, acting as a health hazard for the people living in the vicinity and an environmental hazard as well. So, what is the solution? Waste segregation at source. Poor segregation at source due to either lack of interest of people and corporations and/or lack of resources acts as a hurdle in waste management. Explaining how it can help in waste management, Mr Manuja said,
Generators should segregate waste at the source; collect and take dry waste to material recovery facilities, where these get sorted and sold out. Wet waste enters into processing facility to generate biogas or compost. The outputs are sold out to market, to recover a portion of the operational costs. Only processing rejects and inerts get disposed into scientifically built and operated cells (landfills). Remember, you can’t operate a processing facility without linking the rejects appropriately.
Swati Sambyal, Independent Waste and Circular Economy Expert resonated with Mr Manuja’s views and emphasise on the waste segregation at source, which is mandated by law under SWM Rules 2016. Ms Sambyal also stressed upon reducing the waste at source and taking care of one’s waste like composting wet waste at source.
Many cities are also resorting to waste-to-energy plants – waste management facility that burns waste to produce electricity. Currently, 11 waste-to-energy plants are operational in India. But, to function well, these plants require segregated waste and even then, they don’t produce enough energy. Chitra Mukherjee, Consultant, Waste and Sustainable Livelihood believes that it is time we should move from installing WTE plants and creating landfills to focus on decentralised management that is local management of waste. Ms Mukherjee said,
Whether it is the household, colony, market, or office – the waste they are producing should be managed at the source by them and we should not be thinking of outdated technologies. We should rely on our waste pickers for waste segregation, and opt for options like recycling and reusing.
NDTV – Dettol have been working towards a clean and healthy India since 2014 via the Banega Swachh India initiative, which is helmed by Campaign Ambassador Amitabh Bachchan. The campaign aims to highlight the inter-dependency of humans and the environment, and of humans on one another with the focus on One Health, One Planet, One Future – Leaving No One Behind. It stresses on the need to take care of, and consider, everyone’s health in India – especially vulnerable communities – the LGBTQ population, indigenous people, India’s different tribes, ethnic and linguistic minorities, people with disabilities, migrants, geographically remote populations, gender and sexual minorities. In wake of the current COVID-19 pandemic, the need for WASH (Water, Sanitation and Hygiene) is reaffirmed as handwashing is one of the ways to prevent Coronavirus infection and other diseases. The campaign will continue to raise awareness on the same along with focussing on the importance of nutrition and healthcare for women and children, fight malnutrition, mental wellbeing, self care, science and health, adolescent health & gender awareness. Along with the health of people, the campaign has realised the need to also take care of the health of the eco-system. Our environment is fragile due to human activity, which is not only over-exploiting available resources, but also generating immense pollution as a result of using and extracting those resources. The imbalance has also led to immense biodiversity loss that has caused one of the biggest threats to human survival – climate change. It has now been described as a “code red for humanity.” The campaign will continue to cover issues like air pollution, waste management, plastic ban, manual scavenging and sanitation workers and menstrual hygiene. Banega Swasth India will also be taking forward the dream of Swasth Bharat, the campaign feels that only a Swachh or clean India where toilets are used and open defecation free (ODF) status achieved as part of the Swachh Bharat Abhiyan launched by Prime Minister Narendra Modi in 2014, can eradicate diseases like diahorrea and the country can become a Swasth or healthy India.