Что такое findslide.org?

FindSlide.org - это сайт презентаций, докладов, шаблонов в формате PowerPoint.


Для правообладателей

Обратная связь

Email: Нажмите что бы посмотреть 

Яндекс.Метрика

Презентация на тему Hazardous waste

20.10.2016Waste management and recycling - Hazardous wasteIs the list definite?If a material is listed in the list of hazardous wastes It can be classified as non-hazardous if it has none of the listed dangerous propertiesIf a
Lecture 8: Hazardous waste13.10.2016Waste management and recycling - incineration 2 20.10.2016Waste management and recycling - Hazardous wasteIs the list definite?If a material Types of hazardous wasteSolid wastesLiquid wastesChemicalsIndustrial wastesWell known; in environmental permitsMainly taken Treatment, main aspectsSorted and labelled wasteWaste to energy Thermal treatmentPhysico-chemical treatmentBiological treatmentMaterial 1 High temperature incinerationProcess units at EkokemThe core unit is a 12-metre High temperature incineration of hazardous waste20.10.2016Waste management and recycling - Hazardous wasteWatertreatmentSteam 4 Physico- chemical processesInorganic wastes, such as acids, bases and heavy metal Physico-chemical processes20.10.2016Waste management and recycling - Hazardous wasteNon-soluble heavy metal salts and
Слайды презентации

Слайд 2 20.10.2016
Waste management and recycling - Hazardous waste
Is the

20.10.2016Waste management and recycling - Hazardous wasteIs the list definite?If a

list definite?
If a material is listed in the list

of hazardous wastes
It can be classified as non-hazardous if it has none of the listed dangerous properties
If a material is not listed in the list of hazardous wastes
It can be classified as hazardous if it has even one of the listed dangerous properties
http://ec.europa.eu/environment/waste/index.htm (general waste info)
http://www.environment-agency.gov.uk/business/topics/waste/32180.aspx (classification)
In companies, records have to be kept and stored for any operations dealing with hazardous waste (collection, transport)
quantity, nature and origin of hazardous waste
transport and treatment method foreseen
Directive 2008/98/EC provides additional obligations for labeling, record keeping, monitoring and control from the "cradle to the grave", i.e., from the waste producer to the final disposal or recovery.



Слайд 3 Types of hazardous waste
Solid wastes
Liquid wastes
Chemicals

Industrial wastes
Well known;

Types of hazardous wasteSolid wastesLiquid wastesChemicalsIndustrial wastesWell known; in environmental permitsMainly

in environmental permits
Mainly taken to and treated by hazardous

waste companies
Some can be treated in industrial plants
Examples of typical industrial hazardous wastes
metal refineries waste
chemical industry waste
waste oils (not edible oils!)
waste from thermal processes
solvents

20.10.2016

Waste management and recycling - Hazardous waste


Слайд 4 Treatment, main aspects
Sorted and labelled waste
Waste to energy

Treatment, main aspectsSorted and labelled wasteWaste to energy Thermal treatmentPhysico-chemical treatmentBiological


Thermal treatment
Physico-chemical treatment
Biological treatment
Material recovery
Special treatments
Final disposal
20.10.2016
Waste management and

recycling - Hazardous waste

Слайд 5 1 High temperature incineration
Process units at Ekokem
The core

1 High temperature incinerationProcess units at EkokemThe core unit is a

unit is a 12-metre rotary kiln
1 300oC (Directive 2000/76/EU

For Hazardous waste >1100 oC for 2 s )
Long delay time in kiln and after-burn  complete decomposition and burning
Energy is recovered  electricity and district heat
The slag can be used e.g. in soil construction
Flue gases are cleaned
Cooling
Acid gases washing by lime
Particle removal by electrostatic precipitator
Gaseous emissions: further scrubbing
Dioxine and mercury removal by activated charcoal
At Riihimäki, the energy produced comparable to 43 milj. m3 natural gas. 

20.10.2016

Waste management and recycling - Hazardous waste


Слайд 6 High temperature incineration of hazardous waste
20.10.2016
Waste management and

High temperature incineration of hazardous waste20.10.2016Waste management and recycling - Hazardous

recycling - Hazardous waste
Water
treatment
Steam production
Feeding
solid waste
Rotary kiln 1200-1350oC
Feeding

packed waste

Ash silo

Activated
carbon

Fiber filter

Electrical
Precipitatori

Evaporation tower

Flue gas
analysis

HCL scrubber

SO2
scrubber

Lime production

Heat exchanger

After burner 900-1100oC

Ash

c

Feeding
Liquid waste

Flue gas fan

Filter press.
Solids to landfill

Slag


Слайд 7 4 Physico- chemical processes
Inorganic wastes, such as acids,

4 Physico- chemical processesInorganic wastes, such as acids, bases and heavy

bases and heavy metal containing liquids are made chemically

safe
Main methods
Neutralization of acid and bases
Precipitation of heavy metals
The remaining water is purified for use in processes
Oxidation and reduction reactions

Notice: one type of waste can be used for processing another type of waste
Acid + base
Precipitating media

20.10.2016

Waste management and recycling - Hazardous waste


  • Имя файла: hazardous-waste.pptx
  • Количество просмотров: 123
  • Количество скачиваний: 0