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موضوع عن التلوث بالانجليزي

موضوع عن التلوث بالانجليزي


موضوع عن التلوث بالانجليزي

Water pollution by humans can take various forms. Discover here a complete page dedicated to this problem, which also evokes the solutions to remedy it.
A large amount of water is used in the manufacture of consumer products, for example, in the disorder:
• 41,500 liters of water to produce one kilo of meat.
• 500 liters of water to produce a single orange.
• 1,340,000 liters of water to produce one ton of aluminum.
• 50 liters of water to produce a Saturday newspaper copy.
• about 5,000 liters of water to create one kilogram of rice.
• 4 liters of water to produce a bottle of beer.
We will separate this page dedicated to water pollution into four parts which, in fact, are often related:
• the first part will focus on some effects of urbanization on water quality,
• the second to agriculture in the broad sense,
• the third to industries,
• the fourth to individuals that we are all.
Sources of water pollution by humans
Here is a summary of the different possible sources of water pollution:
• Physical sources:


o Thermal pollution: hot water discharges thermal power plants
o Radioactive Pollution: Radioisotopes Nuclear Facilities
• Source of organic matter:


o Carbohydrates, lipids, proteins: private, agricultural, agro-alimentary effluents
o Ammonia, nitrates: farms and fish farms
• Chemical sources:


o Fertilizers NO3, PO4: agriculture, laundry
o Metals and metalloids: industries, agriculture, acid rain
o Pesticides etc. : agriculture, industries
o Organochlorine solvents: industries
o Organic compounds: industries
o Surfactants: domestic effluents
o Hydrocarbons: oil industry, transport
• Microbiological sources:


o urban effluents
o livestock effluents
Effects of urbanization on water quality
It is not polluting in itself, but it has a lot of indirect effects on water quality. Concreting large areas promotes an acceleration of flows and does not allow time or opportunity for water to infiltrate to be purified by the ground. On the other hand, this systematic concreting of cities favors flooding downstream because of the acceleration of flows precisely. Another significant impact of urbanization on the quality of water and aquatic environments is the change in the environment and this is particularly serious when it comes to river banks or lakes or marine coasts.
Water pollution: the role of agriculture and aquaculture
Globally, agriculture accounts for 70% of water resources, so it is essential to have climate-friendly crops, effective irrigation that reduces the need for water and more energy-efficient food production than, for example, For example, in North America, livestock farming accounts for nearly two-thirds of cereals. A recent report from the International Food Policy Research Institute notes with concern that, according to satellite observations, irrigation drains groundwater much faster than its recharge capacities and that 84% of agricultural soils the world have fertility problems.
Agricultural pollution is due to two main factors: chemicals, fertilizers, pesticides, fungicides, herbicides, insecticides ... livestock with excrement, manure, manure ... and methane (greenhouse effect) ...
Fertilizers, nitrates and phosphates, thus contribute to dystrophication (proliferation of algae, eutrophication is not the appropriate term, since it can be quite natural) inland and coastal waters, whose economic consequences (impact on tourism, fish farming, shellfish farming ...) are added to environmental and ecological damage. Spot pollution is localized: effluent leakage, directly from livestock buildings or leaking crop treatment products related to handling (during filling or emptying of sprayers). Diffuse pollution, related to the use of fertilizers and crop treatment products in the fields, concerns millions of hectares. Regions of intensive agriculture (related to livestock or field crops) are the most affected by pollution.

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إذا أعجبك محتوى مدونتنا نتمنى البقاء على تواصل دائم ، فقط قم بإدخال بريدك الإلكتروني للإشتراك في بريد المدونة السريع ليصلك جديد المدونة أولاً بأول ، كما يمكنك إرسال رساله بالضغط على الزر المجاور ...

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مواضيع بالعربية و الانجليزية topics

2016