Here is where you will submit your final project that you were introduced to in
ID: 299254 • Letter: H
Question
Here is where you will submit your final project that you were introduced to in week 6, please review the instructions below and submit the project when you are finished by the due date.
Your final project should be creative and interesting, and should be a minimum of 6 pages in length not to exceed 8 pages and you will use APA style formatting. It should be well-organized and demonstrate an orderly flow of information that clearly addresses the subject chosen.
You should incorporate the following elements in the project:
Problem identification: Clearly indicate the issue you will discuss and the influence this problem has on land, air, water resources, plant life, animal life, and human societies. Discuss the long-term effects this problem will continue to create without a comprehensive solution. The problem can be of local, national, or global scope.
Solutions currently implemented: Discuss how the issue has been addressed historically. Determine the courses of action taken in science, technology, political and economic systems, laws and regulations, community-based initiatives, education, and so forth. Review the successes and limitations of these actions.
Recommendations: Explain the actions that you believe need to be developed and implemented to accomplish change. Discuss your solution from multiple perspectives, such as educational, legislative, scientific, technological, economic, and other points of view.
In addition you should cite at least three other credible sources. Put these on your last page as works cited. You are cautioned to check out internet sources. The web abounds with junk science that is totally unreliable. Be sure to cross check your sources.
Explanation / Answer
The issue of Arsenic contamination of ground water is discussed.Arsenic contamination is a form of ground water pollution which results due to high levels of Arsenic in ground water.The usage of the Arsenic contaminated water can lead to many serious ailments like Arsenic poisoning.It is a global issue and is a very serious problem in Gangetic plains of India,regions of US, Thailand, Taiwan and China.According to a recent study it was found that Arsenic contamination has affected over 137million people in over 70 countries.
Arsenic contaminated water typically contains arsenous acid and arsenic acid or their derivatives.These compounds are extracted from underlying rocks that surround the auifer.
Arsenic contamination in Bangladesh:
Arsenic contamination in Bangladesh and Gangetic plains of India is a serious problem.Prior to 1970s Bangladesh had
Very high infant mortality rates due to ineffective water storage, purification and sewage measures.Periodic monsoons and flooding exacerbated the problems.As a solution UNICEF and World bank advocated the use for wells for drinking water and millions of wells were constructed.As a result infant mortality reduced by 50%, however with over 8million wells constructed ,one fifth of the wells were found to be contaminated with Arsenic above the government's drinking standards.The consumption of contaminated water results can result in serious ailments like cancers in addition to various gastrointestinal and neurological diseases.
The affected wells are typically more than 20m and less than 100m in depth.Groundwater typically close to the surface has spent a shorter time in the ground , therefore absorbing lower amounts of arsenic and water deeper than 100m are exposed to older sediments which have already been depleted of Arsenic.Hence the dangerous aquifers lie in depths in between 20m to 100m from the surface.
Water purification methods
The water purification methods are classified as small scale treatment and large scale treatment.The small scale treatment implies the use of simpler and less expensive methods like the use of Sono Arsenic fiter ,which involves the use of layers of iron turning ,sand and activated carbon containing wood.
The large scale methods involve the filtration techniques involving Coagulation,iron oxide adsorption, activated alumina, ion exchange ,reverse osmosis and electrodylisis on an industrial scale to supply contaminant free water to masses.