As solid material decays, it uses up oxygen, which is needed by the plants and animals living in the water. The processes in a water treatment plant are shown in the illustration. Water Pollution Water pollution is any chemical, biological, or physical change in water quality that has a harmful effect on living organism or makes water unsuitable for desired uses. Additionally, avoid using pesticides and herbicides in order to prevent groundwater contamination. Poor drinking water treatment and unfit water can always cause an outbreak of infectious diseases such as cholera etc. The most deadly form of water pollution, pathogenic microorganisms that cause waterborne diseases, kills almost 2 million people in underdeveloped countries every year. Water pollution and treatment PPT 1. In today's world, sewage water pollution is one of the major problems faced by most cities. This kind of pollution leads to health-related and environmental issues. Secondary treatment removes more than 90 percent of suspended solids. First, pollution increases water treatment prices. Point source pollution refers to contaminants that enter a waterway via a single, identifiable source, such as a waste water treatment pipe or a factory chimney.Non-point source pollution is when the contamination is coming from many scattered locations. The ecosystem can be critically affected, modified and destructured because of water pollution. According to the United Nations, more than 80% of the worldwide wastewater goes back in … This is due to the additional energy costs and chemicals to filter and clean the water. Examples of non-point source pollution … Prior to industrialization, the pollution of rivers and streams was not as significant a problem. (The next page explains that process) There are also lots of organizations and groups that help educate people about the dangers of water pollution. This has increased water treatment costs by almost $4.00 per 1,000 gallons, according to the EPA For example, the Great Lakes in Minnesota suffer from enormous algae blooms. Inadequate sewage collection and treatment are sources of water pollution. In many developed cities, waste or sewage treatment is very efficient and designed to minimize pollution of water bodies. Pollution has many other sources and costs. Economically, it makes good sense to find remedies for environmental pollution. 7.4 Water Treatment Resolution of the global water pollution crisis requires multiple approaches to improve the quality of our fresh water and move towards sustainability. Increased Water Treatment Costs . Water is an essential resource for all life on Earth. Dilution. "Primary treatment" removes about 60 percent of suspended solids from wastewater. Related Topics: Surface Water Pollution Causes . Source-water protection is the first step in water treatment, with the natural and engineered processes following. Water pollution is controlled by treatment of wastewater. Bodies of water can become polluted in a number of ways. Sewage Water Pollution: A Deadly Threat to Biodiversity. This treatment also involves aerating (stirring up) the wastewater, to put oxygen back in. The methods used for the treatment of wastewater depend upon the characteristics of the particular wastewater ( sewage treatment), contaminants present and final mode of disposal. With proper treatment of water, it is possible to reduce water pollution. Humans are affected by pollution and can contract diseases such as hepatitis through faecal matter in water sources. The external cost of pollution caused by automobiles has been estimated well over $50 billion a year, with some estimates as high as $234 billion. 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