This also has the potential to block migration and mating patterns, which would lead to a decrease in the population of certain species (“Various Disadvantages of Hydropower,” conserve-energy-future.com). It also presents various construction challenges such as: the initial production costs, the amount of space required, and requiring only construction materials of the finest quality. Dam breakage could result in massive floods, which would hurt animals and people alike. It has also been shown that small run-off plants produce between .01 and .03 pounds of carbon dioxide per kilowatt hour (“Environmental Impacts of,” ucsusa.com). Despite all of these drawbacks, with careful consideration in planning and precise execution, many of these possibilities can, potentially, be avoided.
While the storms are part of the natural cycle of the ecosystem, they are the greatest hazard to the sandy-shore animals (Brown, A.C., and A. McLachlan). Other, more severe issues are the result of human activities. These incorporate the wet weather discharges, such as storm water, combined sewer and sanitation overflows, the discharges from recreational or commercial vessels, and the nutrients run-off from the agricultural activities. As a result of precipitation from rainfall or snow-melting, there is a huge discharge from the lines of combined sewers, and sanitary systems. The rainwater that washes away the chemicals, sediments, motor oil, antifreeze pollutants, and fertilizers ends up in the nearest beaches and causes a huge environmental risk.
Stainless steel is more corrosion and rusting resistant than low carbon steel. In steel, the iron surface is easily form a oxide film and tends to form more oxide. This cause the oxide diffuse inside the alloy so rusting can occurs readily. However, stainless steel contains plenty of chromium. The chromium can form a passivation (oxide film) and obstruct the diffusion of the oxygen from surface to the internal structure.
Pollution is the addition of any harmful addition to the environment. River pollution is caused by a number of factors including sewage pipes, corporation waste and illegal dumping. Many Rivers around Ireland are or have been polluted in the past, such as the River Lee, Liffey and Tolka. River pollution isn’t as big of a problem as it is in some parts of the world such as India, however it can kill fish and other organisms living in the river and can also be a threat to human health. According to the Environmental Protection Agency, 71 % of the country’s rivers are in good condition, however much can be done to improve this.
Earth is basically surrounded with potential clean energy source. However, without proper management the pollution can ruin these luxuries. Polluted water is certainly harmful towards aquatic beings, but not only that it also can cause degrading of riverbanks due to dead plants that could not sustain the structure of the soil which usually the root cause of flash
Planet earth is made up of over two-thirds of water and less than one-third of land. Having contaminated water, exposes us to significant health risks. Water pollution is caused by several different human activities that result in toxins, chemicals and waste in our water supply. A 1969 United Nations report defined ocean pollution as: "the introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities, including fishing, impairment of quality for use of sea water and reduction of amenities." There are several types of water pollutants; one category is the microbiological, which refers to the contamination of viruses and bacteria in water.
WATER POLLUTION INTRODUCTION It is called ‘Pollution’, “when something is added to the environment that makes it unclean or unsafe” (C.Dozier, 2001,p1). According to Arvind Kumat, (2008,p.142) “Water pollution is defined as the addition of some substance (organic, inorganic, biological, and radiological) or factor (e.g. heat) which degrades the quality of water so that it either become a health hazard or unfit to use. Water pollution not only affects plants and organisms living in the bodies of water, but it also damages the natural biological communities. (Dingra and Singh,2004) Over 70% of the Earth’s surface is covered by water but less than 1% of it is available for drinking and agriculture; thus making water pollution a very significant
(Moloi, 2013). Damming of rivers on the other hand has a high impact on the quality of the water. If a plant will be isolated into the water for a long time, this may cause the inclination of phosphates and other dissolved nutrients in the water or simply, eutrophication. (Moloi, 2013). It has been said that water pollution starts to transpire when unwanted flow of liquid wastes spreads over the water source, which later on causes the change of the water quality.
Water pollution caused by heavy metals is a global problem. The discharge of toxic metals into the ecosystem may severely affect the biotic as well as abiotic components of the environment. These metals are generally derived from different industrial activities such as mining, metal finishing, battery manufacturing, electroplating, etc. and are responsible for contaminating the receiving water bodies even when present in trace amounts. This is due to their carcinogenic and toxic properties (ATSDR, 2013).
Water pollution is defined as when many toxic chemicals are added into the water the water is polluted. A small drop of harmful chemical in a house pump or cannel can polluted the water in heavy amount. This can be much harmful for human. While a large amount, a chemical in a river can pollute low water. “Any change or modification in the physical, chemical and biological properties of water that will have a detrimental consequence on living things is water pollution.” Water pollution affects the drinking water, lakes, rivers and all over the world.