Xem 1-20 trên 20 kết quả Pollution and recycling
  • Environmental Water - Advances in Treatment, Remediation and Recycling has many contents: the environment, water resources, environmental pollutants, types of pollutants, methods of water treatment.

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  • Welcome to the updated and extended version of Eli Picture Dictionary - a complete and stimulating illustrated dictionary for students of all ages.Eli picture Dictionary is organised into 43 illustrated theme pages, many of which include brand new topics chosen for their immediate relevance to students of today.The colourful illustrations introduce well - known

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  • Wastes are very process-specific but the key pollutants can be derived from knowledge of: the process, construction materials, corrosion / erosion mechanisms and maintenance materials. Waste audits are used to gather information on the source, composition, quantity and variability of all wastes. Waste prevention typically involves preventing the arising of waste at source, minimising the arisings and recycling any waste that is generated.

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  • Depletion of mineral resources is one of the major problems in the world. We have consumed available resources as if they were unlimited, and at the same time we generate a huge quantity of waste, thereby contaminating the Earth. The amount of waste in our society reflects how much resources we consume. We, as modern society, create more products and packaging which is visually appealing but cannot be easily decomposed. Energy demands, resource limitations, and environmental pollution are closely linked.

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  • The environmental goods and services  (EGS) sector has  traditionally  included solutions  for problems  such  as  air, noise  and marine pollution,  land  and water  contamination,  as well  as  activities  such  as  environmental  analysis  and  consultancy  and  waste  management  and  recycling.  However  more  recently,  the  definition  of  this  sector  has  widened.

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  • In earlier times, people did not think about the impact of their actions on the environment and on future generations. Mankind hunted certain animals out of existence; damaged or destroyed ecosystems to build industrial plants, buildings, homes, and other developments; polluted the air and waterways; and negatively impacted the health of human beings.

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  • Depletion of mineral resources is one of the major problems in the world. We have consumed available resources as if they were unlimited, and at the same time we generate a huge quantity of waste, thereby contaminating the Earth. The amount of waste in our society reflects how much resources we consume. We, as modern society, create more products and packaging which is visually appealing but cannot be easily decomposed. Energy demands, resource limitations, and environmental pollution are closely linked.

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  • Described as a structural/LID hybrid, the Modular Wetland System – Linear is a revolutionary stormwater treatment system. This treatment system utilizes an innovative combination of physically passive and natural biological treatment processes, including the use of a breakthrough filter media, BioMediaGREEN, which acts as a pre-treatment media filter for the enhanced 4th generation sub-surface flow wetland. These features combined with other various treatment and flow control technologies has lead to a system that maximizes pollutant removal and minimizes maintenance. ...

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  • The Earth never increases the amount of water it contains, nor does it ever lose any of its water. The Earth’s water is recycled in three ways: evaporation, condensation, and precipitation. When the sun heats up the Earth’s oceans, rivers, and lakes the water is turned into water vapor or steam (evaporation). When the water vapor rises into the atmosphere it collects in the forms of clouds (condensation). We all know what clouds do. When clouds get too saturated and heavy with water vapor, they release it in the form...

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  • The environment provides services that are used by both household units and production units of the economy. In the processes of consumption and production, wastes are generated. If the ecological system cannot recycle these wastes as fast as they are generated, wastes accumulate. This constitutes pollution.

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  • Onsite treatment of wastewater and onsite dispersal of treated wastewater is not a new concept. Throughout the history of civilization in this country and other places in the world, onsite wastewater systems have been and will be an integral part of the overall wastewater management infrastructure. Onsite wastewater systems are here to stay and the U.S. Environmental Protection Agency (EPA) views adequately managed onsite systems as a cost-effective and long-term option for meeting public health and water quality goals, particularly in less densely populated areas....

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  • Một nghiên cứu lĩnh vực sử dụng có lợi của chất thải rắn ao cá trồng lúa WS thành lập Trong mùa mưa năm 2007 tại trang trại thí nghiệm của Cửu Long Viện nghiên cứu lúa gạo. Ba liều lượng chất thải ở mức 1, 2 và 3 tấn / ha kết hợp với ứng dụng 1/3 và 2/3 liều Phân bón vô cơ. Tỷ lệ 100% Phân bón vô cơ (60N- 40P2O5-30K2O) phục vụ như là kiểm soát. Không có sự khác biệt đáng kể trong sản lượng nông nghiệp lúa Tất cả điều trị hơn.

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  • In  the  past,  environmental  goods  and  services were  seen  as  having  limited  economic  importance.  Now, environmental issues and activities pervade every aspect of our economic life and performance  and  are  subject  to  challenging  national  and  international  targets,  strict  monitoring  regimes  and  ongoing  discussion  and  debate  in  the  media.  As  understanding  of  environmental  challenges  has  grown, so too has appreciation of the size of the market and the associated business opportunities.

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  • Điều trị và tái chế chất thải và đất từ các ao cá ở đồng bằng sông Cửu Long để cải thiện sinh kế và giảm ô nhiễm nước

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  • Environmental engineering is the application of science and engineering principles to protect and utilise natural resources, control environmental pollution, improve environmental quality to enable healthy ecosystems and comfortable habitation of humans. It is based on multiple disciplines including geology, hydrology, biology, chemistry, physics, medicine, engineering, management, economics, law, etc.

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  • Lead is the most pervasive pollutant found in the Blacksmith Institute’s database and is a well-documented health hazard. The Blacksmith Institute has identified over 500 sites polluted by lead, putting an estimated 16 million people at risk. Based on the Blacksmith Institute’s investigations, the top sources contributing to lead pollution, by population, are lead smelting, mining and ore processing, industrial estates and lead-acid battery recycling and manufacturing.

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  • Pollution prevention. IPPC presumes the use of preventative techniques before any consideration of end-of-pipe control techniques. Many pollution prevention techniques can be applied to LVOC processes and Section 5.2 describes them in terms of source reduction (preventing waste arisings by modifications to products, input materials, equipment and procedures), recycling and waste minimisation initiatives. Air pollutant control.

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  • Sustainability in natural systems is built on the closed-end process of recycling materials. Our present society produces so much that is not recyclable, like resin-molded chairs and air polluting automobile tires, that it is necessary to apply intention to source reduction and product responsibility. Chapter 18 provides knowledge of municipal solid waste and how to disposal and recovery.

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  • Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 18 ENVIRONMENTAL CONTROL AND ENERGY CONSERVATION ENVIRONMENTAL CONTAMINATION ANALYSIS AND PREVENTION 18.2 Recycle Profit Potentials in Municipal Wastes 18.2 Choice of Cleanup Technology for Contaminated Waste Sites 18.4 Cleaning Up a Contaminated Waste Site Via Bioremediation 18.10 Process and Effluent Treatment Plant Cost Estimates by Scale-Up Methods 18.16 Work Required to Clean Oil-Polluted Beaches 18.73 Sizing Explosion Vents for Industrial Structures 18.75 Industrial Building Ventilation for Environmental Safety 18.

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  • Earth's ecosystems continue to exist because they are sustainable. Two fundamental characteristics are crucial to sustainability. First, ecosystems' energy source, the Sun, is non-depletable and non-polluting. Second, there is efficient recycling of nutrients and other chemicals through organisms and through geological and chemical processes that result in no waste accumulation in ecosystems. This chapter provide knowledge of ecosystems: How they work.

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