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Get your hands on our high-quality Environmental Pollution PowerPoint template to describe the harmful impacts on the environment due to the release of various pollutants and substances. These pre-designed slides will reduce your presentation preparation time.

Environmentalists, educators, and NGOs can utilize these impressive PowerPoint slides to explain the role of businesses in polluting the environment. You can also showcase environmental pollution's types, causes, and impacts. Moreover, you can also highlight the common pollutants that must be controlled.

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July 28th is approaching, which means that World Nature Conservation Day is just around the corner, and what can we do? We need to save the planet and the environment for future generations! You can start by downloading this template, which is 0% polluting and, moreover, will allow you to...

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Soil Pollution Prevention Project Proposal

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Home / environmental pollution Ppt Presentation Slides

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Chapter 15 Environmental pollution control

Dec 27, 2012

320 likes | 852 Views

Chapter 15 Environmental pollution control. 15.1 The goal of environmental pollution control 15.2 The types of environmental pollution control 15.3 The comprehensive treatment measures of environmental pollution 15.4 Case study . 15.1 The goal of environmental pollution control.

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• solid waste
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• incineration
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Chapter 15 Environmental pollution control 15.1 The goal of environmental pollution control 15.2 The types of environmental pollution control 15.3 The comprehensive treatmentmeasures of environmental pollution 15.4 Case study

15.1The goal of environmental pollution control 15.1.1 Environmental pollution and its characteristics • Generally speaking,environmental pollutants is in lower concentration and long duration • Environmental pollutants can be changed by the biological or chemical effect in environment 15.1.2 The goal of environmental pollution control • Prevent pollutants going to water, atmosphere and soil system • Restore the use function of natural ecosystem

15.2 The types of environmental pollution control • Concentration control and total amount control • Terminal control and process control • Decentralized control and centralized control

15.3 The comprehensive prevention and control measures of environmental pollution • 15.3.1 Water environmentalpollution control • The principle and countermeasures of water pollution comprehensive prevention and control • (2) Basic methods of water pollution control • Physical method, chemical method, physicochemical methodand biological treatment method • (3) Wastewater reclamation

Water self purification Natural water and oxidation ponds Under natural conditions Soil purification Wastewater irrigation Aerobic treatment Suspended growth Activated sludge and its deformation Water self purification Adnate growth Biological filter, Rotating biological contactor, Biological treatment Contact oxidation, Aerobic biological fluidized blanket High-temperature compost Under natural conditions Anaerobic pond Anaerobic treatment Septic tank, Upflow anaerobic sludge blanket Suspended growth Anaerobic digester Under artificially conditions Adnate growth Anaerobic biological fluidized blanket Figure 15－1 The classification method of sewage biological treatment

primary settling tank aeration tank secondary sedimentation tank water-exit water inflow air Surplus sludge Backflow sludge Figure 15－2 Basic processof activated sludge process

Figure 15－3 Land treatment system of waste water

(4) The treatment process of waste water • The main task of primary treatment is to remove suspended solids in sewage, adjust pH valve, reduce the task of subsequent treatment • The task of secondary treatment is to remove the dissolved and colloidal organic pollutants significantly. It is maily used biological method. • The purpose of tertiary treatment is to further remove the pollutants which are not removed in secondary treatment.

Primary treatment secondary treatment tertiary treatment wastewater Biological aeration Chemistry, adsorption, ion exchange, grille Grit chamber Sediment ation tank Second sedimentation tank pool or biological filter disinfection, equipment Backflow sludge Secondary treatment outlet Primary treatment outlet tertiary treatment outlet (emissions, irrigation) (emissions, irrigation) (emissions, reoccupy) Primary sludge Surplus sludge treatment or use Sludge Sludge digestion pool dewatering Figure 15－4 Typical technological process of Municipal wastewater treatment

（5） Wastewater utilization The renewed wastewater can be used in industrial water, agricultural irrigation, urban and groundwater recharge, water treatment.The affect of recycling and reuse in the entire water cycle is showed in figure 15-5 Figure 15-5 The effect of water treatment, regeneration and reuse to water-cycling system

15.3.2The control of atmospheric environmental pollution • （1）The comprehensive treatmentmeasures ofatmospheric pollution • （2）Basic method of atmospheric pollution treatment • The treatment of particle pollutants • Treatment technology of gas polutants • Cleaning particulate pollutants is usually used by duster device .Divided as its main mechanism,there are mechanical duster, wet duster, filter duster and electrostatic duster.

Figure 15-6 Structure profile of cyclone precipitator and spray wet precipitator

Figure 15-7Operation simplified graph of bag dust collector

The treatment ofgas pollutant • Absorption method • Adsorption method • Catalytic conversion process • Combustion method • Condensation method • Biological method

15.3.3 Pollution controlof solid waste （1）The definition and classification of solid waste （2）The treatment and disposal and utilization principle of solid waste • harmlessness • reduction • resource （3）The treatment and resource method of solid waste The treatment and recycling technology of solid waste is mainly include crushing, sorting, thermochemicalprocessing and biological treatment.

（4）The final disposal technologyof solid waste The final disposal method of solid waste can be divided to land disposal and ocean disposal according to the sites of waster disposal. The land disposal is a method based on the land and the soil layer to dispose the solid, divided into stockpiling method, land farming method, landfill method, deep perfusion method etc. The ocean disposal is to put the solid waster into the ocean by the capacity of ocean environment and its self-purification capacity.

Figure 15-8 The structural graphof safe landfill

（5）The treatment and disposal methods of hazardous waste The dangers of hazardous waste is mainly for inflammable, explosive, toxic, corrosive, radioactive and biological cumulative etc. The treatment and disposal methods of hazardous waste are as following Solidification and wrapping Incineration Safe land landfill

15.3.4 Pollution controlof soil environment • Pollution prevention measures of soil environment mainly including: • Strengthen the source control and management of contaminated soil Technical measure of soil pollution treatment Physical improvement • Chemical improvement • Biological improvement

15.3.5 Other physical pollution control Noise pollution control Reform the technology, technics and equipments, reduce noise radiation intensity • Reasonable city planning • Strengthening noise management The technology to noise control • Sound absorption: to reduce the nosie by absorbing sound through sound absorption material or sound absorption structures • Sound insulation : impeding the noise transmitting to the space by sound insulation structure, or control the noise in a certain range. • Sound elimination: reduce propagation of the noise in air by silencers

Radioactive pollution control The main measures of radioactive pollution control are include: Strengthen the treatment of radioactive waste liquor • Properly handling and disposal of radioactive solid wastes • The treatment of radioactive waste gas

Waste gas and liquid purification emissions storage curing packaging storage transportation processing Solid volume reduction waste treatment process Shielding isolation room Figure 15-9 Basic process ofradioactive pollution control

The control of electromagnetic radiation pollution • Reduce the leakage of electromagnetic waves • Adopt effective control measures. • Improve urban planning to achieve region contral The control of light pollution • Strengthen urban planning and management, rational arrangement of light source,reduce the source of light pollution • Safe methods should be taken, such as using movable barriers surrounding the operating area to prevent the non-operator from directly exposure in the harmful light source • Take the necessary personal protection, such as wearing goggles and protective masks which is effective personal protective measures

The control of heat pollution • Improve thermal energyutilization ratio, reduce waste heat emissions • Active develop and use clean energy • Comprehensive utilization of waste heat • Increaseafforest area

15.4 Case study Shenzhen Xiaping Landfill (1) the process of landfill (2) the treatment process of landfill leachate (3) the treatment and usage of landfill gas (LFG) (4) the measure of hygiene management Spraying cars will spray the pesticides regularly, to kill the fly, to prevent the spread of bacteria.The sprinkler will sprinkes water regaularly to prevent the dust flying in the air and there is car washing equipment, to prevent polluting the road by the car’s sludge ,control dust, and also prevent taking pathogens outside.There are fence around the field to prevent light waster blown outside causing contamination.

调节池 吹脱 后期达到 污泥 填埋场 厌氧 城市二级 污水处理 A/O 系统 厂指标后 直接排入 混凝 污泥 填埋场 城市污水处理厂 达标排放 Figure 15-10 Technological process of waste leachate treatment

Figure 15-11 Treatment and utilization technology of landfill methane

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The new climate stripes? How creativity can inspire environmental action

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Without context, vast numbers are meaningless. Data can be incredibly dry, abstract and difficult to visualise. But sometimes scientists find clever ways of presenting complex information in creative, eye-catching and more tangible forms.

In 2019, Ed Hawkins, a climate professor at the University of Reading, created “climate stripes” to illustrate the global average temperature for each year since 1850 in the form of a coloured stripe. Now a cultural icon , these simple blue and red graphics have appeared on football kits , music festival stages and even a Tesla .

Last week, scientists launched new air-quality stripes to depict how concentrations of ultrafine particles known as particulate matter have changed in 176 cities worldwide since 1850. The global threat of air pollution is often considered an invisible killer , but these colourful diagrams show some stark global contrasts. Some offer hope.

Read more: These colourful diagrams show how air quality has changed in over 100 countries around the world since 1850

This roundup of The Conversation’s climate coverage comes from our award-winning weekly climate action newsletter . Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 35,000+ readers who’ve subscribed.

Hawkins makes complicated climate data accessible to all by using shades of blue to represent cooler years and red for warmer years. “Helping science to make this leap from the lab to social media is crucial to changing mindsets,” he writes .

“My research has often focused on communicating the impacts of climate change to new audiences. The more people that see and understand this huge problem, the better chance we have of solving it.”

Read more: #ShowYourStripes: how climate data became a cultural icon

For critical issues like the climate crisis and air pollution, visual storytelling is a powerful tool. By translating statistics into colourful diagrams that tell a story, changing trends become more apparent, relatable and relevant.

Jim McQuaid, an atmospheric scientist at the University of Leeds who helped create the new air quality stripes, remembers the steel furnace smell once common in Britain, which decreased drastically after the Clean Air Act was introduced in 1956.

London’s air quality stripes illustrate how the industrial revolution in Britain triggered various smog events, one of which killed up to 12,000 people in 1952 . But stripes switch from red and orange to more yellow (moderate) and sky blue (fair) as industrial and transport emissions were targeted by the subsequent Clean Air Act in 1993.

Read more: 70 years on from London's Great Smog, we still need cleaner air to protect health

The Beijing stripes show how concentrations of particulate matter rose rapidly with China’s industrial development from the mid-20th century.

But when the 2008 Olympic Games took place, drastic steps were taken – factories were shut or moved away from the city while millions of cars were taken off the road. Dark brown (extremely poor) air quality stripes revert to a lighter shade of orange (poor air quality).

Read more: China's smog kills more than a million each year – but there's a clearer road ahead

Climate drivers

Climate and air pollution are intrinsically linked . Many air pollutants are also known as “climate forcing agents” – they drive the climate crisis. Sooty components of particulate matter known as black carbon have a warming effect.

But other pollutants, notably human-made aerosols including sulphate from industrial chimneys, have the opposite effect . These small particles of pollutants are left suspended in the air and can seed clouds.

Read more: Air pollution: science shows there's no safe limit – here's how laws must change

More particulate matter means more clouds and crucially smaller cloud droplets – this increases the amount of sunlight reflected back into the atmosphere. As scientists at the University of Oxford have found, “all of this increases the amount of sunlight that clouds scatter back to space instead of being absorbed by the Earth”.

By slightly cooling the climate, human-made aerosols mask some of the warming from greenhouse gases – this is known as “global dimming” . But that’s far from good news, because aerosols and their cooling effect are short-lived .

“While the CO₂ emitted into the atmosphere today from cars and coal power stations will still be there centuries later, the aerosols emitted as air pollution will cease to have an influence a month from now,” write Peter Manshausen, Duncan Watson-Parris and Philip Stier from the University of Oxford.

“This means that as soon as we stop emitting aerosols, their buffering effect on climate change disappears, while the greenhouse gases in our atmosphere will continue to heat the planet.”

Read more: Air pollution cools climate more than expected – this makes cutting carbon emissions more urgent

Mapping pollution

In Mukuru, an informal settlement in Nairobi, Kenya, scientists have been working closely with the local community to raise awareness about the severe health effects of air pollution through theatre, storytelling, photography and drawing. Artists from the Mukuru-based Wajuuku Arts Centre painted maps on canvas and took these out into the community so that residents could identify pollution hotspots and sources.

Read more: Using art to tackle air pollution: a story from a Nairobi slum

Using creativity was key to the project’s success, according to researchers Cressida Bowyer at the University of Portsmouth and Heather Price at the University of Stirling.

“If we had gone into the community with aims and ambitions that had already been decided according to the commonly acknowledged causes of air pollution (traffic, industry, cooking methods) we may not have had space to reveal or acknowledge these other sources,” they say.

“Instead, we identified issues that the community recognises as indirect causes of air pollution, such as workers’ rights, alleyways between dwellings that are too narrow for fire-fighting equipment, and poor waste management.”

Even between neighbourhoods, the pollution picture can vary. The best visual tools represent as much nuance as possible.

Read more: Why eye-catching graphics are vital for getting to grips with climate change

James Cheshire, professor of geographic information and cartography at University College London points out that uncertainty is difficult to communicate in any one single image, chart or graph.

“One misconception about the climate crisis is that warming will be uniform across the world,” he says, explaining that oversimplified graphics risk missing the “complex patchwork of effects” behind the headline figures. “Maps can be an invaluable weapon against this misunderstanding.”

Scrolling through time or space is a great way to capture intricacies and highlight anomalies at different scales. Visual storytelling offers hope, not only by demonstrating progress but also by connecting more people with the problem and amplifying possible solutions.

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