This is just to share with the entire world the role of the informal private sector in integrated solid waste managment (ISWM) in Lagos, Nigeria - a developing country.
Lagos the commercial nerve center of Nigeria is the smallest in size with a land area of 3,600 square km, with an approximated population of about 15 million people. The state presently has a very high population density of over 4,000 persons per square kilometer. According to U.N estimation by year 2015, going by 6% growth rate, Lagos will be the 3rd largest mega city in the whole world.
As expected the above statistical data and realities of population explosion, serious urbanization and rapid industrial growth will have direct effect on general waste management systems in the state. The volume of waste being generated by this large population and the industrial sector (it was postulated that over 70% of total industries in Nigeria are based in Lagos State alone) was so enormous and overwhelming to all government agencies involved in the collection, transportation and disposal of solid waste in the state.
Abstract: Case studies of regional landfills show that electromagnetic geophysical methods can accurately and inexpensively define boundaries and thickness of waste. Degradation of putrescible solid waste generates conductive leachate that can be imaged with a frequency-domain terrain conductivity meter. Terrain conductivity measurements can be modified through a simple algorithm based upon native soil conductivity to produce plan maps showing a detailed three-dimensional image of the waste mass. Further, seismic...
When looking at technical brochures and marketing materials in regards to solids-control equipment, one question that should always come to mind should be: Is this really necessary? Other great questions to ask are: What are my day-to-day needs; and what are my severe, high-duty needs? Finding the right solidscontrol equipment is much like buying a personal automobile. Most vehicles’ speedometers advertise that they are able to achieve 140 mph, to even as fast as 220 mph or more, but is this really practical...
Over the past five years or so, leading solid waste and recycling organizations, communities and businesses across the country have increasingly embraced Zero Waste. Zero Waste policies and programs establish practical ways to eliminate waste and safely reuse, recycle or compost discarded products and packaging. However, there has been confusion in the marketplace due to the many definitions of “zero” that are being used.
To address this confusion for its members and others, NRC identified the need...
Solid waste from Jordanian olive oil processing (OOSW) was used to prepare biochar samples by slow pyrolysis at terminal temperatures of 350, 450, 550 and 630 °C; henceforth known as BC-350, BC-450, BC-550 and BC-630, respectively. These samples were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction, ash content, moisture content and surface area. The ability of the biochar to remove Hg2+ ions from aqueous solutions was investigated in laboratory scale...
In Elgin’s last White Paper, “Common Challenges Relative to the Use of Decanter Centrifuges for Barite Recovery in the Oil & Gas Industry,” a detailed discussion was offered about the complexities involved in achieving effective solids control when deploying a dual-centrifuge “barite recovery” system. As noted in that report, when centrifuges are properly used, centrifuges enhance the drilling fluid properties, thereby improving rig performance. By maintaining the target properties...
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