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

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).

The Sanitation Districts of Los Angeles County have devised a system to provide wastewater management and have implanted ways to recycle a lot of this water. The three treatments are

After washing your hands there is not much thought to what happens to the dirty water. It goes down the drain and it is gone. Living in Canada is extremely fortunate as it has the most fresh water supply but with the increase of urban settings, toxins, and pollution, this “endless” fresh water supply is declining. A major issue is how to treat waste safely so that it does not affect the environment, or public health. The waterfront water treatment facility has run into constant bypassing issues which prevents water to be properly treated. Bypass water is excess flow discharge from water treatment plants when it reaches capacity. Untreated polluted water is dumped into the waterfront of Toronto which is progressively getting worse due to

While reading this assignment pollution is a major problem in our water supply. However, I believe there are some solutions out there that could cut down on the number of waste that enters our water source. Having our waters being polluted is no small matter, but I think a bigger problem is the consumption of water and the staggering amount of water we waste.

After the dirty water flows in to the treatment plant it goes through Bar Screens, then Grit Channels, which is followed by Influent Pumping, followed by Primary Settling, then to Oxygenation Tanks which undergoes a Secondary Setting then Effluent Pumping. Afterwards the water is then disposed either in the upper NY Bay or the Newark Bay. If after the Effluent Pumping process the water goes to the Main outfall is directed to the Upper NY Bay, if it instead goes to the Chlorine Contact Tank then it is disposed of in the Newark Bay

The project shall install wastewater treatment system. The wastewater shall be treated to meet the effluent standard, then discharging out of the power plant and shall be connected by OWNER at 1m out of boundary of the power plant.

First, control over the discharge can take place at the point of generation within the plant itself. Second, the polluted water can be sent to water treatment plants before it is released into the surrounding water sources. Third, the waste water can be treated within the plant and recycled again, or treated in the plant and released.

Chlorination is used in most Australian capital cities and small water supplies as it is inexpensive, easy to use and protects water within the pipe system. Treating drinking water involves two processes; the physical removal and the chemical disinfection. The traditional seven step water processes used around the globe is Coagulation, flocculation, sedimentation, filtration, disinfection, fluoridation and the storage & distribution. (Refer to figure 1)

Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. Its objective is to produce an environmentally-safe fluid waste stream (or treated effluent) and a solid waste (or treated sludge) suitable for disposal or reuse (usually as farm fertilizer). Using advanced technology it is now possible to re-use sewage effluent for drinking water, although

Water is an important resource for people and there its use is limited. Most of it is contaminated and there is an increasing amount of contamination in it. So many chemicals have mixed that scientist can't even determine what chemicals are in the water. Many of these chemicals come from seeped chemicals used on farmlands while others are purposely applied to the water to destroy unwanted organisms. Some parts of the water are so contaminated that it cannot be treated by purifying plants.

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.

There primary function of Clean Water Act is to devise the fundamental structure to control expulsion of polluted material into the U.S waters and implementing quality principles for surface water. In the light of this Act, several pollution control programs have been implemented by Environmental Protection Agency comprising developing standards against water wastage for manufacturing firms (Stern & Kollikkathara, 2008). It has also defined principles interrelated to quality of water for all pollutants in surface water. Clean Water Act states, it’s illegal to dispose off any contaminant from any point source into negotiable water without any legal authorization.

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.