The Waste Water Treatment Process Essay

Recycled water is former wastewater that has gone through a process to remove contaminants so that it can be used for other purposes such as irrigation for crops and landscape (“Water Recycling and Reuse”). Another source of recycled water is gray water, which “is reusable wastewater from residential, commercial and industrial bathroom sinks, bath tub shower drains and clothes washing equipment drains” (“Water Recycling and Reuse”). The treatment process includes three steps, first any solids are removed from the water. Secondly, microorganisms are added to the water to eat dirt particles and as they get fatter, they’ll fall to the bottom of the tank, leaving cleaner water rising to the top. Lastly, water is

reused. At this time 99% of the solids in the water are removed and various

Although sewage systems are able to provide a great deal of sanitation to water before it is released back into a source, the risk of raw sewage overflowing into water sources poses several issues. Not only can raw sewage contain harmful bacteria such as E. coli, it can also negatively affect aquatic life. Human waste typically contains high levels of nitrogen, phosphorous, and other nutrients that are useful for people but can cause many issues in an aquatic environment (Burkholder et. al., 2011). Much of these elements are removed during wastewater treatment, but if they are sent directly to a water source due to flooding, they can cause algae blooms and harm

Environmental Protection Agency (EPA) described the general treatment of wastewater and its two basic stages, primary and secondary. In the primary treatment most solids are caught in a screen, then the sewage goes to a grit chamber to settle small pieces of debris at the bottom, then through the sedimentation tank. Afterwards, secondary treatment removes a majority of the organic matter, eventually being chlorinated before reaching an effluent (EPA, 1998).

Wastewater treatment facilities take all the water used in everyday urban life. Phosphorus is abundant in many soaps and detergents that are used every day in urban areas. From showers and toilets to washing machines, all wastewater has to be sent somewhere and treated. After which its is pumped back out into larger bodies of water such as the Mississippi or Minnesota River (Metropolitan Council). Nitrogen and phosphorus are nutrients that are natural parts of aquatic ecosystems. Nitrogen and phosphorus support the growth of algae and aquatic plants, which provide food and habitat for fish, shellfish and smaller organisms that live in water according to the Environmental Protection Agency

Mostly, wastewaters are usually perilous and unhealthy for human beings, aquatic plants and animals in addition to responsible for the deterioration of environment so it should be treated earlier to its disposal into the aquatic medium and land surfaces. After secondary treatment of domestic and agro-industrial polluted water still discharges large amounts of phosphorus and nitrogen. Such increased percentage of nutrients leads to eutrophication of lakes, rivers, ponds and seas which also leads to augmentation of algal bloom (Lau et al., 1997; Trepanier et al., 2002) and throwing away of wastewaters produces a steady threat to fading of natural resources of fresh water on worldwide (Montaigne and Essick, 2002). Under the extreme nutrients in the wastewater, such as

My lab report was based on how ground water could be affected by contaminants that surround us everyday. “ Access to safe drinking water depends not only on the quality of water at source but also on contamination throughout it's way to the user and practices related to purification and sanitation” ( Mishra, S., & Nandeshwar, S. 2013).I was very surprised that the detergent contaminated the water. I thought that the detergent would stay in the soil but it ended up going through the soil into the water. Which then left the water bubbly and dark. These labs may show that we may need to look into more

All around the world, countries are fighting to keep their drinking water clean. Whether it’s streams, rivers, or lakes, countries have taken great measures to maintain high quality drinking water for both human consumption and animal consumption. Countries must first understand the sources of the polltion, then determine the best methods to eliminate the pollution. Clean drinking water is a valuable resource and a the key to human survival. Plants and animals also depend on water for their growth, so all water must be kept clean. The major contributors to water pollution can be classified in three categories, industrial, agricultural and municipal.

The recycling of water, or “greywater” is household water that is collected from appliances like sinks, showers and water using appliances such as washing machines. In a raw unpurified state is commonly used for vegetation, places like parks, golf courses and local governments report needing to use decreased amounts of expensive fertilizers. Although any water used on city or government property that is “greywater” must first go through a purification process. The decreased need for fertilizer was found to be a cause of nutrients previously in the water that were not removed during the purification process.

Contaminants exist in waste water are either damaging or useful, in both cases they should be extracted whether to discard or to make a use out of it.

"Treat the Earth well. It was not given to you by your parents. It was loaned to you by your children."    Kenyan proverb.

Over the past fifty years, Hawaii has seen a drastic increase in ocean and land pollution. There has been a lot of plastic in the ocean after it has been discarded from use. It affects marine life and us because we eat fish what if fish that are contaminated with poison or full with plastic in them then we eat it, it's really bad for our environment. This increase in pollution is harming the environment in Hawaii. Our food sources, marine life, and wildlife are being negatively affected through air pollutants, water contamination, and physical waste from human activity. Pollution rates need to rapidly decline if we want to stray abroad the potential, irreversible effects on the environment of Hawaii, as well as the entire world.

Incredible water shortage in the Middle East region has compelled countries to reuse this water for many purposes. Treated wastewater can be used in agriculture, industry, recharging aquifers (Middle East Water Shortage). This method leads to conservation of traditional sources of water which further can be used “for meeting the demand for higher-quality water such as that for drinking, or for high value-added industrial and agricultural uses.” Also the climate fickleness’ influence will lessen by means of reuse. But there are few problems connected with leading treatment into usage. One of them are health and environmental risks (Baroudy 2005, 25-35). Purified in such way water contains bacteria, viruses and parasites (Middle East Water Shortage). Use of treated water can cause different infectious and gastrointestinal diseases. According to Baroudy even contact with this water sometimes can cause allergies and other dermatological illnesses (2005, 25-35). Another problem is that this water has some biological and chemical matter dissolved in it, which can obstruct soil pores. Clogged soil has less ability for leaking which leads to bad irrigation efficiencies (Middle East Water Shortage). But, of course, some standards with the purpose to limit these effects were elaborated. Toughening standards require financial investments (Baroudy 2005, 25-35). Process of waste treatment requires special equipment and construction of special water treatment

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

The disposal of untreated wastewater coming from the industries into the water bodies will pollute the water bodies because of its high concentrations. So, the wastewater produced from the industry should be treated properly to meet the permissible limits given by central and state pollution control boards. Therefore it is necessary to treat the wastewater properly with the help of an appropriate treatment plant. However, the treatment plant even though properly planned may not work satisfactory because of several reasons. Hence, it is essential to evaluate the treatment plant considering individual treatment unit in the entire treatment flow. In the present work emphasis has been given to the study of the performance of treatment facilities because of its importance in the conventional treatment of wastewater. Hence, the literature review related to the evaluation of the entire treatment process along with biological treatment process particularly suspended growth process Activated Sludge Process (ASP), attached growth process Trickling Filter (TF) and a combination of the both suspended and attached growth process Hybrid Reactor (HR) is presented in the following sections of this chapter.