sewage

A detailed Summary of sewage

How is New York City's sewage and garbage treated

You ever wonder where the stuff you flush down the toilet goes? Or where the water goes after you brush your teeth? Or what's under those manholes that has sewage written on it? What happens when you throw wasted in the garbage? You probably don't but all of the content that is discarded throughout the day gets sent to a sewage plant through the pluming system that is connected to your house. One major problem is how to get rid of the waste safely so that it does not disrupted the environment or hurt people or animals. The major problem for the United States is waste water, the amount, and the cost of treatment and disposal. The United States treats over 1 billion tons of waste a year.

What is sewage you ask, the dictionaries defines sewage as; the waste matter from domestic, commercial, and industrial establishment carried off in sewers. When waste matter enters water, the resulting product is called sewage or wastewater. Garbage is defined as; animal or household refuse Sewage is stored in sewers. Then treated or in a sense recycled. Raw sewage includes waterborne waste from sinks, toilets, and industrial processes. Treatment of the sewage is required b

gical processes. Tertiary treatment is necessary when the water will be reused; 99 percent of solids are removed and various chemical processes are used to ensure the water is as free from impurity as possible.

------------------------------------------------------------------------

ed into two sections. In the first, air is pumped through the water. As the organic matter starts to decay, it needs oxygen. The aeration stages supplies it with this oxygen. The bubbles lets grit settle out. The grit is pumped out of the tanks and taken to the landfills. The water then enters its stage of sedimentation. Here the Sludge settles out and is pumped out of the tanks. Some of the water is removed for a stepped called thickening and then the sludge is sent into large tanks called digesters. As the sludge settles to the bottom, the lighter materials float to the surface. This is called "scum" This can include anything from grease and oil, to plastics and soaps. Slow moving rakes remove the scum off the water surface. The scum is thickened and then pumped into the digesters along with the sludge. "Many cities use filtration in sewage treatment including New York City," Mr. Williamson. After the sludge is removed, the liquid sewage is ran through filters, usually sand!

At my tour at the Riverbank State Park we learn that under the park is a sewage treatment plant. Its purpose is to purify the sewage so that is can be released back into the enviornment. My tour guide Mr. Williamson explains that the water contains solid particles, which mixed with the untreated water is

Some common words found in the essay are:
York City's, Riverbank Park, City Williamson, Evidently York, York City, Towards Middle, Hudson Harlem, sewage treatment, york city, solid particles, treatment plant, sewage treatment plant, digesters sludge, pumped tanks, water called, waste water, chemical processes, sludge settles, contains solid particles,

Approximate Word count = 1060
Approximate Pages = 4 (250 words per page double spaced)

Category: Science