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IENG565– Industrial Waste Management Instructor: Dr. Dareen Hussein Presented by: Mouhammad Doueik & Mouhammad Tawbeh

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OUTLINESIntroductionMunicipal Solid Waste Treatment

Center Saida, LebanonSeparation of the MSW into organic

and non-organic componentsTreatment of the organic component

in an Anaerobic DigesterProduction of Methane gas and

Organic fertilizer.Conclusion

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Introduction Waste generation is related to human activitieslifestyles, and environmental awareness.Rapid urbanization, growing consumption, and limitedenvironmental awareness are having a compoundingeffect on waste generation.

Waste from our homes is generally collected by our local authorities through regular waste collection,or by special collections for recycling.

It is important to note that no one single treatmentmethod can manage all the waste materials in an environmentally effective way.

Integrated Solid Waste Management (ISWM) takesan overall approach to creating sustainable systems thatare economically affordable, socially acceptable and environmentally effective.

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Municipal Solid Waste Treatment Center Saida, Lebanon

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Managed by the Municipality of Saida, the dumpsite receives about 150 tons of solid waste per day from15 municipalities (or 250,000 people), the environmentaldamages are severe.

IBC provides a total solution for MSW and sponsorsprojects that separate the MSW in their components.

Organic components are treated biologically via either aerobic or anaerobic digestion dependingon the quality of the waste.

Through these processes, organic fertilizer andelectrical energy are produced. Other non-organiccomponents such as plastic, paper, glass and metals are recycled.

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The sorting and separation area for the treatmentof MSW is designed to handle up to 450 tons of wastedaily in three shifts of eight hours each.

A typical sorting line includes the following components: Receiving (manual or robotic) Particle size reduction (mechanical and/or biological) Separation (based on magnetism, density, and size)

Incineration is the most common thermal treatmentprocess. This is the combustion of waste in the presence of oxygen.

This method may have the advantage of : reducing the volume of the waste, rendering it harmless reducing transportation costs

Separation of the MSW into organic and non-organic components

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Treatment of the organic component in an Anaerobic Digester The process is the degradation of organic rich fraction by micro-organisms in an environment starved for oxygen. It can be used to treatorganic solid waste and wastewater of almost any kind.

The methods used to treat MSW anaerobicallycan be classified into following categories:

Single Stage Multi Stage Batch

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Production of Methane gas and Organic fertilizer. Anaerobic Digestion is not only a waste management process but also as source

of renewable energy. The digestion provokes the conversion of 50-60 % of the organic load to Biogas

(Methane and CO2) to be converted into energy, while the remainder can be used as fertilizer.

The power plant is the first of its kind in Lebanon and will utilize biogas for the production of electricity and heat to support facility operations. Two systems will generate 2.12 MW of electricity and 2.38 MW of thermal output, at an overall efficiency of 84.8% power to run the Center.

The organic sludge is moved to the maturation area. At the end of the maturation period 43.000 t/day of organic fertilizer is used by farmers to cultivate their farms.

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Conclusion Lebanon is too small to accommodate other large scale landfills.

The study also analyzed a landfill VS bioreactor installation and found that the costs and benefits were close to equal.

The advances of AD technology have been supported by legislation.

Landfills are the source of large emissions of methane to the atmosphere and methane gas has a global warming potential (GWP) that is over twenty times that of carbon dioxide.

As an answer of all challenges, the best practicable environmental option will be deriving energy from waste and anaerobic digestion (AD).

The negative point in this plant is the disposal of waste water directly to the sea without treatment.

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