Envh7002 Environmental Health Risks Of Assessment Answers
Is this a point-source pollutant or nonpoint-source pollutant? Explain.
What are the harmful impacts of the pollution?
Describe impacts to both humans and to ecosystem structure and function.
What steps are in place to eliminate the pollutant or to mitigate harm from the pollutant?
Describe examples of laws or regulations that apply to the pollution and its sources.
Also, describe educational programs, technology, or other initiatives that are used to help control the pollution.
Have the programs, best management practices, or regulations been effective in resolving harm from the pollutant?
Give examples of progress, or explain with examples what more could be done.
Answer:
Eutrophication
Eutrophication refers to the excessive algal and plant growth due to an increase in the availability of restrictive growth factors required for photosynthesis such as carbon dioxide, sunlight, and fertilizers. Eutrophication is a point source pollutant, this is because it entails the discharge of nutrients like phosphorus, and nitrogen into water sources by waste treatment plants and other human activities like farming.
Impact of the Pollution
Eutrophication has a negative impact on both humans and the ecosystem. The major consequences of Eutrophication to the ecosystem include the growth of blue- green algae, which limits light penetration into the water causing die- off plants and success of predators that use light to catch their prey (Cosme, Jones, Cheung & Larsen, 2017). To humans, it causes taint the quality of domestic water, hypoxia, and the ruin of recreation facilities.
Ways to Eliminate Eutrophication
Eutrophication can be solved by the reduction of the external load of nutrients or by manipulating directly the water ecosystem by reducing pollution. Another method to eliminate the problem is through the removal of the sediments.
Laws and Regulations that apply to Eutrophication
An example of a law that applies to eutrophication is the Discharge Standard where penalties and sanctions apply to those who do not comply with this law. The aim of the law is to ensure goal, policies, and principles toward environmental protection are carried out.
Programs and Technologies to Control Eutrophication
New technologies have been put in place to control eutrophication. They include effluent reuse, pollution reduction, recycling and recovery, and safe disposal of substances. In addition, programs that aim at environmental protection include increasing forest cover to prevent erosion and the siltation of reservoirs, the use of new technologies and programs to control eutrophication is effective, as it has led to a reduction in water pollution caused by the harmful waste from factories.
Further, to eliminate eutrophication, public awareness is imperative. This involves the implementation of programs that promote community education on the effects of pollution. In addition, programs that aim at public participation in the planning and decision-making processes, and sensitization on the rational use of water should be conducted (Schoen, Xue, Wood, Hawkins, Garland & Ashbolt, 2017).
References
Cosme, N., Jones, M. C., Cheung, W. W., & Larsen, H. F. (2017). Spatial differentiation of marine eutrophication damage indicators based on species density. Ecological Indicators, 73, 676-685.
Schoen, M. E., Xue, X., Wood, A., Hawkins, T. R., Garland, J., & Ashbolt, N. J. (2017). Cost, energy, global warming, eutrophication and local human health impacts of community water and sanitation service options. Water Research, 109, 186-195.
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