Skip to content

Water Purification Information For Essay

Dec. 16, 2015 — Our drinking water is to a large extent purified by millions of "good bacteria" found in water pipes and purification plants, Swedish researchers have found. So far, the knowledge about ... read more

July 23, 2015 — Both prescription and illegal drugs such as morphine, cocaine and oxycodone have been found in surface waters in Canadian rivers. New research shows that wastewater discharged from wastewater ... read more

Dec. 9, 2015 — Inspired by the mangrove plant and human kidney, this novel biomimetic membrane is mechanically stronger and allows only water molecules to pass ... read more

Aug. 17, 2015 — An oxidation process has been developed that uses ozone to degrade contaminants in water that alter the synthesis, transport, action or elimination of natural hormones, responsible for maintain ... read more

Mar. 24, 2015 — Contaminants - such as medical residues and pesticides - go through the traditional wastewater purifying process and go back to the environment. Concern over their volyme in waste and drinking water ... read more

Arsenic Water Purification With Waste Materials

Mar. 16, 2016 — Sand, coral and even waste building materials can become extremely efficient sorbents for water purification from arsenic, if they are treated for this purpose. Scientists have revealed a new ... read more

July 31, 2015 — A synthetic membrane that self assembles and is easily produced may lead to better gas separation, water purification, drug delivery and DNA recognition, according to an international team of ... read more

July 19, 2017 — Researchers have designed a tiny device -- built using a 3-D printer -- that can monitor drinking water quality in real time and help protect against waterborne ... read more

Mar. 20, 2017 — What can the forests of Scandinavia possibly offer to migrants in faraway refugee camps? Clean water may be one thing, suggests a new ... read more

'Sweet' Solution Kills E. Coli in Drinking Water

Nov. 14, 2016 — Paper strips laced with sugar could be the sweetest solution so far, literally, to kill E. coli in contaminated water. A researcher says the “DipTreat” discovery will be key to developing a new ... read more

Water Treatment Process Essay

Clean water supply is essential in establishing and maintaining a healthy community. There are two sources of water supply which are the surface water and ground water. Most natural waters are not suitable for consumption as it is contaminated by pathogens and also natural chemicals and minerals. In addition, as a city grew, wastes from human activities contaminate most of the water supplies. Water treatment plays an important role to properly treat a contaminated source of water supply in order to protect the health of consumers. Water treatment process is defined as a process of eliminating pollutants from untreated water to produce a biologically and chemically risk-free water, which is both potable and palatable for human consumption (SAJ Holdings Sdn Bhd., n.d.). There are six important steps in water treatment process, namely screening, aeration, coagulation and flocculation, sedimentation, filtration and lastly, disinfection (refer to Figure 1 in Appendix 1).
The first step in water treatment process is screening. Raw water undergoes physical screening to remove coarse material and debris as it comes to the water treatment plant. Screening separates particles according to their size alone. As mentioned by Hendricks (2006),
the objective of the screen is to accept a feed containing a mixture of particles of various sizes and separate it into two fractions, an underflow that is passed through the screen and an overflow that is rejected by the screen. (p. 121)
Screening is further divided into coarse and fine screens. Raw water undergoes coarse screen to eliminate floating material of fairly large size as preliminary treatment for the next step. These floating or submerged debris would damage pumps or block inlets, hence it is prudent to provide coarse screens (Binnie & Kimber, 2009). Fine screen removes waterweed, filamentous algae, small wastes, and the larger dwellers of raw water, which is typically the first stage of water treatment.
The second step of water treatment process is aeration. At the aerator, raw water is mixed with air. The aeration process helps to provide oxygen to the raw water which is needed for the oxidation process of dissolved iron and manganese in order for it to precipitate and therefore enables its removal through filtration (SAJ Holdings Sdn Bhd., n.d.). Wormleaton and Tsang (2000) stated that for water treatment process and also natural streams, it is essential to maintain a high amount of dissolved oxygen. Aeration also provides the escape of dissolved gases, such as carbon dioxide and hydrogen sulphide to reduce the corrosiveness of water, thus controls the tastes and odors of the water (Shun, 2007). Groundwater with high dissolved carbon dioxide levels or high concentrations of iron and manganese commonly require aeration as well as water drawn from reservoirs that is low in dissolved oxygen.
Thirdly, the proceeding water treatment step involves coagulation and flocculation. The objective of this step is to...

Loading: Checking Spelling


Read more

Brisbane: Impacts of Water Management Strategies

2449 words - 10 pages 1. Introduction The Queensland region recently suffered its worst drought in over a century. This period was shared with a rapid increase in the city’s population. A combination of severe drought and a rapid increase in population had a permanent impact on the city’s water management strategy. Brisbane population is expected to reach 4.5 million by 2050. This report aims to look at how the relationship between Brisbane’s water resources and...

Water Essay

1225 words - 5 pages Have you ever been in a desert and your mouth was dry and you were sweating hot? Well if you have ever been like this or even just hot, you probably wanted a big glass of water. Water is the number one drinking source for all people, yet that is just the fresh water there is also salt water. Everybody needs water. We use it to cook, bathe, clean, and farmers use it to water the crops. Fish live in it and most other animals have water in their...

Living Machines, Constructed Wetlands and Sustainable Water Resources

3517 words - 14 pages Living Machines, Constructed Wetlands and Sustainable Water Resources Thesis: Conventional waste treatment plants, Living Machines and constructed wetlands can all be used for water purification, but only living machines and constructed wetlands will provide the human race with a sustainable future. Introduction Our liquid planet glows like a soft blue sapphire in the hard edged darkness of space. There is nothing else like it in...

Chlorinated Drinking Water is Necessary for Public Health

1174 words - 5 pages With the aggregation of millions of people in large urban centers, there is an unprecedented amount of human waste to be treated. In this treatment, pathogenic microbes (bacteria, viruses, protozoa, and parasitic worms) must be removed or reduced to harmless levels. It is well known that in any community, at any time, there are always small numbers of people who are either manifestly ill, in some stage of illness but not demonstratively so, or...

Water Recycling Reduces Drinking Water Scarcity

2584 words - 10 pages Water Recycling A Regional Administrator named Felicia Marcus once stated, “Water recycling is a critical element for managing our water resources.” Her statement symbolizes modern technological ideals to increase the reuse of water. Also known as water reclamation, water recycling is the process of extracting previously used water and treating it for reuse. Currently, modern technologies have allowed the application of recycled water to...

Separating seawater through desalination

1003 words - 4 pages Chemistry assignment:The mixture selected in this assignment is seawater obtained from the hydrosphere.The seawater can be separated through out several processes, both chemically and physically. The separation process is known as desalination. This name is getting more common everyday, as the Australian water demand grows with population we can no longer ignore the salinity problem. Desalination process could take use of the...

Geography Research Project 2014

1594 words - 6 pages Amount of Water used The water in Dubai is used in many different ways. Yet the main area in which water is used would be agriculture as seen in Figure 4. 55% of the water that is available to be used is being used on the croplands and golf courses (Kawach 2012). The domestic use of water is lower than that of agriculture. Yet the amount of water used domestically is relatively high. The people of Dubai live a luxury lifestyle and this comes with...

Water Needs In Singapore

2901 words - 12 pages Water Needs In Singapore Singapore's water resources are limited and we should not take the availability of water for granted. Our demand for water is increasing each year. With increasing affluence, Singaporeans enjoy a good standard of living and now own many modern appliances which demand ever greater use of water. Water consumption is also increased by the setting up of more nuclear families and households. Today,...

case study statistic

1586 words - 6 pages Student ID: 2150586 PM 503 SS3 2T Tutor: Alan D. LoganModule Code: PM 011 - 2T(SS3)Class Group: Group ZModule Title: Statistical Design for Science and EngineeringAssessment: Case studyAssignment Title: the quality of water in the reservoirs supplyingthe Greater Glasgow areaTutor Name: Alan D. LoganDate of...

Water engineering

2954 words - 12 pages 1.0 IntroductionThis proposal will deliver a substantial number of new homes on an existing rural village with 20 homes. The proposal will embrace sustainability; focus on water supply, waste water treatment and impact on the hydrological environment for the need of water supply and demand. The existing village has got only 20 houses, therefore the new houses will have a big impact on the existing water supply and the...

Magnetic Water and Treatment: Myth or Magic?

1144 words - 5 pages It is important that everyone know of the need to improve our energy and water savings and assist in reducing the use of electricity, water, and non-renewable fuel sources. There are a number of non-chemical, non-mechanical water treatment technologies. Many of these are known by names such as electronic, magnetic, electrostatic, electromagnetic, and AC induction. The history of these devices goes back to at least 1952. Claims for and...