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How does Henry's law relate with wastewater treatment?

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Wiki User
04/23/2009

a sewage plant works by having a primary treatment that help take out all of the excess oil and trash that goes into it then comes the secondary treatment that they put chloride in it to kill all the bacteria or anotherway putting it into an o zone layer which acts like a dienfactant torwards bacteria andlast it mightbe transffered to the river, lake, or stream and afterthat it goes to your homes! henrys law is that the solubility of a gas in a liquid is proportional to the pressure of that gas above the liquid. Henry's law has since been shown to apply for a wide range of dilute solutions, not merely those of gases. An everyday example of Henry's law is given by carbonated soft drinks. Before the bottle or can is opened, the gas above the drink is almost pure carbon dioxide at a pressure slightly higher than atmospheric pressure. The drink itself contains dissolved carbon dioxide. When the bottle or can is opened, some of this gas escapes, giving the characteristic hiss (or "pop" in the case of a champagne bottle). Because the pressure above the liquid is now lower, some of the dissolved carbon dioxide comes out of solution as bubbles. If a glass of the drink is left in the open, the concentration of carbon dioxide in solution will come into equilibrium with the carbon dioxide in the air, and the drink will go "flat": luckily for drinks manufacturers, this is a relatively slow process for solutions of carbon dioxide in water. so to relate this to waste water treatment....the bugs act as the dissolved carbon dioxide etc