SLIDE MẤU HAY VỀ TIẾNG ANH CHUYÊN NGÀNH QUẢN LÝ

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SLIDE MẤU HAY VỀ TIẾNG ANH CHUYÊN NGÀNH QUẢN LÝ

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Water has great importance for human life and all kinds of animals and plants Wherever there is water there is life and the Earth is the only place on the planet all countries But water is heavily contaminated with significant impact on the lives of every living thing on earth • So we conducted group learn about water pollution issues may apply to this situation rediscover life with a source of fresh water for the earth I Concept Environmental “Environmental factors including natural and man-made material factors closely related to each other, surrounded by people, affecting life, production and survival, human development and natural" Environmental pollution Environmental pollution is the state of the environment contaminated by chemical, biological, radiation, noise, affecting human health and other living organisms Environmental pollution is caused by humans and human management Pollution of the water environment Water pollution is a phenomenon waters such as rivers, lakes, sea, ground water is the human activity of contaminating substances can cause harm to humans and the creatures living in the wild II Situations • Pace of urbanization and rapid industrialization and increasing population pressure on increasingly heavy on water resources in the territory • The water environment in many urban areas, industrial zones and craft villages increasingly contaminated by waste water, waste gas and solid • In large cities hundreds of industrial production facilities are polluting the environment because there is no water works and waste treatment facilities • For example, in the city of Taiyuan, industrial waste water discharged from the base paper production, iron and steel, non-ferrous metallurgy, coal mining in the dry season, the total volume of wastewater in the region accounts for about 15% of river flow Bridge, papermaking wastewater with a pH from 8.4 to and mg NH4 / 1, high levels of organic matter, brown sewage smell unpleasant Due to floods Due to population growth Systems are not dredged canals leading to accumulation of large amounts of organic matter from sewage , garbage and causing siltation affect the drainage of water Landfill does not meet the technical requirements , leachate from garbage seep into groundwater or runoff into canals on the ground The surface water flow in rivers and canals also contaminated by oil from ship traffic , transportation or other incidents on the river , the sea And many other causes also cause water pollution IV Sequel 1.For people • Cause many dangerous diseases examples cancer, mutations Especially cancer • Aaste from the mining industry, coal, gas, plumbing lead Anemia, kidney disease neurological disorders, environmental destroyed • Harmful bacteria in contaminated water from human wastes human and animal causes cholera, typhoid and polio • lack of clean water for the works • And many other consequences as ecological balance, beauty, animals and plants living on the water environment For economy • Aquatic Livestock Retardation • The rice farmer becomes difficult • Health care costs due to pollution of water is a lot V Solution Prevent all sources far away from the factory, work shaps, industrial park Domestic wastewater from risidential treatment area must pass before being discharged in to river Carrying away impurities, plants and animals residues from the down east highland hills ice… Trench systemsestablished in each city ecdogy house hold Limited use of fertilizers and toxic compounds in agriculture

Ngày đăng: 20/06/2016, 08:46

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Mục lục

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  • I. Concept

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  • II. Situations

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  • III. Cause

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