Energy recovery or how to recycle our waste
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Waste treatment is a major issue in modern society. Every year, millions of tonnes of waste are produced worldwide, posing environmental, economic and health challenges. Effective waste management is essential to minimize its negative impact on the environment and promote sustainable development. Household, industrial and hazardous waste require specific treatment methods to ensure their safe and environmentally sound disposal or recovery.
What types of waste are involved?
1. Household and similar waste: This includes household refuse, green waste, food waste and bulky items.
2. Industrial waste: Includes inert, hazardous and non-hazardous waste from industrial activities.
3. Specific waste: Includes electronic waste (WEEE), asbestos and medical waste (DASRI).
Tailor-made answers to your industrial challenges
EXPERTISE.
With over 30 years' experience in thermal processes, Servithen can offer you the best solution for your waste treatment needs, both technically and financially.
MULTIDISCIPLINARITY.
The wide-ranging skills of Servithen's engineers enable us to offer you complete turnkey solutions that comply with current standards.
ADAPTABILITY.
Servithen analyzes your problem in detail and studies the most suitable solution for you, taking into account your wishes and constraints.
How does waste treatment work?
This process encompasses a variety of methods and technologies designed to reduce, recycle or dispose of waste responsibly. The main methods are incineration, pyrolysis and methanisation.
What are the main waste treatment processes?
- Incineration: Burning waste to reduce its volume and generate energy. This process takes place in specific structures such as furnaces. There are 3 main types of incineration furnaces
- Horizontal single-chamber furnaces with fixed or multiple hearths, grate furnaces or rotary furnaces.
- Single-chamber vertical furnaces.
- Vertical multi-chamber furnaces.
- Pyrolysis: High-temperature decomposition of organic waste in the absence of oxygen, producing combustible gases and solid residues.
- Methanization and composting: Although less detailed here, these methods transform organic waste into biogas or compost, which can be used for agriculture.
What are the main fields of application for these solutions?
Waste treatment solutions are applied in various sectors to meet specific needs and contribute to sustainable resource management.
1. Municipalities and WWTPs: manage household and similar waste through sorting centers, energy recovery units and landfills.
2. Industries: Use specific techniques to treat the hazardous and non-hazardous waste generated by their activities.
3. Agriculture: Composting and methanization are used to recover organic waste and produce fertilizer and energy.
How do you assess the advantages and disadvantages of different waste treatment solutions?
Advantages :
– Waste volume reduction: Incineration and pyrolysis significantly reduce the volume of waste.
– Energy production: Energy recovery by incineration generates electricity and heat.
– Material recovery: Bottom ash produced during the process is reused in road construction.
Disadvantages :
– Pollutant emissions : Incineration can generate polluting fumes and ash requiring additional treatment.
– High costs: Facilities such as pyrolysis units can be expensive to build and maintain.
– Residues: Some methods, such as pyrolysis, produce solid residues requiring specific management.
How does the waste incineration process work?
Incineration is a waste treatment process that involves burning waste at high temperatures. It reduces the volume of waste and generates energy in the form of heat and electricity.
Incinerators reduce the volume of household waste from 1 m³ to 0.1 m³, and the weight from 1 tonne to 300 kg. What’s more, one tonne of waste can generate 2 to 2.5 tonnes of steam, depending on its lower calorific value (LCV), which contributes to energy recovery. Bottom ash from incineration can be used as road base, providing additional product recovery.
What are the advantages of incineration?
– Significant reduction in waste volume.
– Energy production in the form of heat and electricity.
– Destruction of the majority of organic contaminants.
But, on the flip side, you should take into account…
– Emissions of greenhouse gases and pollutants
– Generation of ash and bottom ash requiring specific management.
– High installation costs and maintenance.
How pyrolysis works in waste treatment
Pyrolysis is an advanced waste treatment technology that involves decomposing organic waste at high temperatures in the absence of oxygen. This process transforms waste into useful products such as combustible gases, oil and charcoal.
What are the advantages of pyrolysis?
– Fewer pollutant emissions than incineration.
– Production of valuable products such as gas and oil.
– Possibility of treating a variety of organic wastes.
But, on the flip side, you need to take into account…
– Costly and complex technology to implement.
– Need for waste pre-separation to optimize the process.
– Management of remaining solid residues.
Ready to optimise your processes?
Effective waste management is essential for a sustainable future.
Servithen offers waste treatment solutions tailored to your specific needs, ensuring reduced environmental impact and optimum waste recovery. Contact us today to find out more about our services and how we can help you.
