ppt presentation pollution

Plastic Pollution

A global overview from our world in data.

These slides provide a global overview of plastics production, waste, and pollution of our oceans. They are designed to provide a summary of the plastics challenge and what this tells us about how to address it. A more detailed exploration of this topic can be found at our topic page on Plastic Pollution

• How much plastic does the world produce?
• What is the fate of our plastics?
• How much plastic waste do we produce & how much ends up in the ocean?
• Where does plastic waste come from?
• How much plastic waste is traded?
• How do we tackle plastic pollution?

Annual global production of plastics has increased more than 200-fold since 1950.

In 2019 the world produced more than 450 million tonnes of plastic.

By 2019 cumulative plastic production was around 9.5 billion tonnes.

This is equivalent to more than one tonne of plastic for every person alive today.

Of the global plastic produced over the period from 1950 to 2015:

• 55% straight to landfill
• 30% was still in use
• 8% was incinerated
• 6-7% was recycled

Of 5.8 billion tonnes of plastic no longer in use, ~9% was recycled.

You can explore how the trend in global recycling, incineration and landfill has changed over time here .

Whilst recycling is preferable to incineration or landfill by displacing new plastic production, most plastic can be recycled only once or twice .

This means that most recycled plastic eventually ends up in landfill or incineration.

"Recycling delays, rather than avoids, final disposal" (Geyer et al. 2017)

The world produces around 350 million tonnes of plastic waste each year.

Estimates vary, but studies suggest that 1 to 2 million tonnes enter the oceans annually.

That means 0.5% of plastic waste ends up in the ocean.

We can answer this in multiple ways:

• By land-based and marine sources
• By country or region

Packaging is the largest contributor to plastic waste.

Plastic waste can arise from land (via coastlines and rivers) and from marine sources (such as fishing nets, ropes, lines and abandoned vessels).

How significant is each source for ocean plastics?

However, in certain locations, marine sources can be more significant. The Great Pacific Garbage Patch has more than half (52%) from marine sources due to intensive fishing activity in the Pacific Ocean.

To identify the main geographical contributors to plastic pollution, we need to explore these figures in several steps:

• How much total plastic waste is generated by country
• How much plastic waste is generated by coastal populations - this is plastic which is most at risk of entering the ocean
• How much of coastal plastic waste is mismanaged (open, dumped or not enclosed) and can therefore enter waterways.

This interactive map shows the total plastic waste generation by country in 2010.

Here we see that the largest producers (China, USA, Brazil, Germany, Japan, Pakistan, Nigeria) span all continents.

But to understand the largest contributors to plastic pollution, we must correct for:

• coastal populations (taken as populations within 50km of a coastline)
• how much of this plastic is 'mismanaged'

Mismanaged plastic waste is waste which is inadequately managed (seen in the chart opposite), plus littered waste (seen here ).

High-income countries tend to have effective waste management systems and therefore low levels of inadequately managed waste.

Once we correct for these factors we can understand the geographical distribution of plastic waste at high risk of entering the ocean.

Here we see very strong regional dominance particularly across Asia.

When we aggregate by region we see the majority of plastic at risk of entering the ocean arises from Asia and Africa, with the Americas playing a notable role.

Global trade of plastics has changed a lot in the last few years.

Historically, China has been the largest plastic importer. But in 2017, it banned imports of non-industrial plastic waste.

A number of other middle-income countries have done the same.

We can see this income group's share of global plastic imports has fallen dramatically

You can also see that the amount of plastic waste that rich countries export has fallen.

This is because middle-income countries are less willing to trade.

“If we all do a little, we’ll only achieve a little”

David mackay (sustainable energy without the hot air), high-impact immediate priorities:, development of effective waste management infrastructure in all countries.

Most ocean plastic arises from countries with poor waste management infrastructure.

Cease plastic trade from rich to low or middle-income countries without sufficient investment in waste management infrastructure

The largest plastic exporters are some of the world's richest countries.

Rich countries should handle waste domestically & cease trade of plastic trade unless sufficient infrastructure is in place. A tax for exporting countries is one suggested method of raising funds for waste management services.

Strict legislation and management of fishing activity and waste

Marine plastics can be a major source of ocean pollution (most notably the Great Pacific Garbage Patch ).

Fishing activity should be better-regulated and managed to limit these sources.

Longer-term shifts in consumption models

• How essential plastic is in many aspects (e.g. preventing food losses & waste, sterile environments, construction, medical supplies)
• Plastic alternatives often have other environmental impacts . There are usually trade-offs
• To be globally effective, must be scalable and cheap

Explore this topic in detail at our:

Main topic on plastic pollution.

About the author: Hannah Ritchie is a scientist at the University of Oxford. She is a Researcher at the Oxford Martin Programme on Global Development . About Our World in Data: Our World in Data is an online publication that shows how living conditions are changing. The aim is to give a global overview and to show changes over the very long run, so that we can see where we are coming from, where we are today, and what is possible for the future. www.ourworldindata.org | @HannahRitchie02

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Free Air Pollution PPT Template and Google Slides

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Pollution PPT | 30+ Best Pollution PPT Collection Download Free

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Pollution PPT

• DEFINITION OF POLLUTION
• Types of Pollution
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Air pollution PPT

• What is air
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Environmental pollution PPT 2

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Plastic pollution ppt

• What is pollution?
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Marine pollution PPT

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Land pollution PPT

• What is land pollution? 
• Causes of land pollution
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• WHAT IS NOISE POLLUTION
• Health Effects
• Sources of Noise Pollution
• Solutions for Noise Pollution

Agricultural pollution PPT

• What is agricultural pollution
• Types of agricultural pollution
• Main causes of agricultural pollution
• Effects of agricultural pollution
• Challenges of agricultural pollution
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• Types of the mechanism of agricultural pollution
• Leaching and groundwater poisoning
• Water runoff
• Eutrophication
• Challenges or managements problems of  agricultural pollution
• Prevention and techniques of agriculture pollution
• A figure showing irrigation drainage

Agriculture water pollution PPT

• Agriculture as a cause
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Creative Environmental Pollution PowerPoint Presentation

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This Creative Environmental Pollution PowerPoint Presentation is one of the finest pollution templates from SlideEgg. This is a four nodded template. Environmental pollution is the contamination of the biological and physical elements of the earth/atmosphere system to the extent that standard environmental processes are adversely affected.

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PRESENTATION ON POLLUTION

Jul 22, 2014

2.27k likes | 5.36k Views

PRESENTATION ON POLLUTION. POLLUTION. Man’s First Environmental Problem. POLLUTION. Is the introduction by man into the environment of contaminants that contains harmful substances. Introduction by man, waste matter or

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Presentation Transcript

POLLUTION Man’s First Environmental Problem

POLLUTION • Is the • introduction by • man • into the • environment of • contaminants • that contains • harmful substances • Introduction by man, • waste matter or • surplus energy into • the environment, • which directly or • indirectly causes • damage to man and • his environment

POLLUTANT • A substance or effect which • adversely alters the environment by • changing the growth rate of species, • interferes with the food chain, is toxic, • or interferes with health, comfort • amenities or property values of people.

EFFECTS ON BIOSPHERE • Damage to human health by specific • chemical substances present in the air, food, • water and radioactive material • Damage to natural environment affecting • vegetation, animals, crops, soil and water • Damage to visual quality by smoke, fumes, • dust, noise and waste. • Damage by carcinogens, radioactive • materials and excessive noise.

TYPES OF POLLUTION • Water Pollution • Air Pollution • Land Pollution • Noise Pollution • Waste pollution • Thermal Pollution • Visual Pollution

WATER POLLUTION Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities.

CAUSES OF WATER POLLUTION • Water ( about 99%) • Solids • Carbohydrates • Proteins (These are referred to as • Fat “organic material”.) • Nutrients (Nitrogen and Phosphorus) • Microorganisms. (On average there are about 10 • million per ml of wastewater. Many are pathogens)

sources of WATER POLLUTION • Throwing trashes in water. • Throwing low batteries in • water , lakes , rivers and etc. • The chemicals from factories • that might flow to rivers

AIR POLLUTION • Air pollution is the modification of the natural • characteristics of the atmosphere by a chemical • particulate matter are biological agent. • The atmosphere is a complex ,dynamic natural • gaseous system is that is essential to support • life on the planet earth . • Stratospheric ozone depletion due to air pollution • has long been recognized as a threat to human • health as well as to the earth ecosystem.

EFFECTS OF AIR POLLUTION • Humans • Animals • Vegetation • Materials • Global warming • Ozone depletion • Acid Rain • Various respiratory • illnesses.

LAND POLLUTION Urbanization and Concentration of Population Municipal Solid Waste Industrial Waste and Hazardous Waste Uncontrolled .Land Treatment. Burning open dumps and forest fires Deforestation Mining and Erosion

NOISE POLLUTION Noise pollution or environmental noise is displeasing human or machine created sound that disrupts the activity or happiness of human or animal life. A common form of noise pollution is from transportation, principally motor vehicles. The word "noise" comes from the Latin word nausea meaning "seasickness", or from a derivative (perhaps Latin noxia) of Latin noceō = "I do harm", referring originally to nuisance noise.

EFFECT OF NOISE POLLUTION • No one on earth can escape the sounds of noise- • an unwanted, disturbing sound that causes a • nuisance in the eye of the beholder. • There are numerous effects on the human • environment due to the increase in noise • pollution. • Major sources of noise can be airplanes at • takeoff and landing, and a truck just off the • assembly line, yet we seem accept and enjoy • countless other sounds, from hard rock music to • loud Harley Davidson motor cycles.

WASTE POLLUTION Waste, rubbish, trash, garbage, or junk is unwanted or undesired material. "Waste" is the general term; though the other terms are used loosely as synonyms, they have more specific meanings: rubbish or trash are mixed household waste and including paper and packaging; food waste or garbage (North America) is kitchen and table waste; and junk or scrap is metallic or industrial material. There are other categories of waste as well: sewage, ash, manure, and plant materials from garden operations, including grass cuttings, fallen leaves, and pruned branches.

THERMAL POLLUTION • Thermal pollution is the degradation of • water quality by any process that changes • ambient water temperature. • A common cause of thermal pollution is • the use of water as a coolant by power • plant and industrial manufacturers. • When water used as a coolant is returned • to the natural environment at a higher • temperature, the change in temperature • (a) decreases oxygen supply, and • (b) affects ecosystem composition.

VISUAL POLLUTION • Visual pollution is the term given to unattractive • and man-made visual elements of a vista, • a landscape, or any other thing that a person • does not feel comfortable to look at. • Visual pollution is an aesthetic issue, • referring to the impacts of pollution that • impair one's ability to enjoy a vista or view. • The term is used broadly to cover visibility, • limits on the ability to view distant objects, as • well as the more subjective issue of visual clutter.

POLLUTION MANAGMENT Pollution can be controlled by proper choice of preventive and remedial measures

WASTEWATER TREATMENT Preventive Curative Physical Biological Volume reduction Strength reduction Chemical

WASTEWATER PROCESSING Wastewater Airemissions Water Primary Treatment Secondary Treatment Tertiary Treatment Primarysludge Secondary Sludge Tertiary Sludge

PHYSICAL METHOD Objective: Remove solid or liquid pollutants based on density difference or other physical property (eg. SS or floating solids) • Solvent extraction • Evaporation • Distillation • Filtration • Reverse Osmosis • Electro dialysis • Adsorption

BIOLOGICAL WASTE WATER TREATMENT • Aerobic treatment • Anaerobic treatment • The organic load is defined by the • Biological Oxygen demand (BOD). • In aerobic systems the water is aerated with • compressed air (in some cases oxygen). • Anaerobic systems run under oxygen free • conditions -biogas is a useful product.

AIR POLLUTION CONTROL 80% of the air pollution load is contributed by the transport sector • Use tall stacks • Source reduction by process and raw • material changes (eg. Improved furnace • design and low S fuel) • Recover valuable material (eg. Hg) • Bag filters, scrubbers, ESP, cyclone separators • Absorption, adsorption, combustion and • catalytic reaction

LAND POLLUTION CONTROL • Integrated Solid Waste Management • Good agricultural practices • Remediation of polluted soils • Prevention of erosion and silting • Containment of hazardous waste and • waste water treatment using land treatment • techniques.

NOISE POLLUTION CONTROL • Control noise at source by proper • choice of equipment, design modification , • mounting and proper layout. • Isolation or use of baffles. • Use of ear protection devices.

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Action Plan for Water Pollution Prevention

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