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The answer depends on exactly what you mean and where you are.
A common meaning is that the main drainage from an area is not separated into surface (basically rain-water drainage) and foul (domestic waste water). In modern housing developments only foul water is treated so surface and foul waters are kept separate.
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∙ 12y ago
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What can cause clean usable water to become toxic?
If your drinking water gets mixed with your sewage water...
What is Difference between treated sewage and untreated sewage?
Untreated sewage is waate product from factorries, nuclear facillities and untreated human waste. This waste is highly dangerous as it contains bacteria, virus, etc... This waste if mixed with river water or water system can cause large damage not just to human but aquatic life aswell. Treated sewage is sewage which is filtered and treated with chlorines and other chemical, after the process the water is ready to be mixed with river, etc. This water is even ready to drink.
What happens to the concentration of oxygen in the water when the sewage is added?
The concentration of oxygen decrease.
What happens to the concentration of oxygen in water when the sewage is added?
The concentration of oxygen decrease.
Why is sewage mixed with air?
Sanitary sewage is treated in plants that mix the raw sewage with bacteria to consume the waste materials. The nature of these bacteria is that they need oxygen to live and grow (they are aerobic bacteria). The plant equipment mixes air into the sewage to increase the transfer of oxygen to the water at much higher rates than quiescent conditions. A an added advantage this mixes the bacteria and sewage so that the bacterial population is much higher and the treatment much faster. The "full" bacteria are separated from the clean water which is discharged to surface watercourses.
How do sewage treatment works use decay and microorganisms?
by have hard sex
What is meant by BOD loading rate?
BOD loading rate is the amount of organic matter added in water or waste water for example sewage water
What is water sewage?
A drainage system for carrying surface water and sewage for disposal.
What happens when drinking water get mixed with sewage?
it would taste pretty bad because the oxygen levels in the water would decrease making it less sterile to drink
What is sewage pollution?
pollution of water sources by anything that can be considered sewage. pollution of water sources by anything that can be considered sewage.
Why is calcium hydroxide added to water during water purification process?
Calcium hydroxide or slaked lime is sometimes added to form a fluffy charged solid that aids in the removal of smaller particles from water. This is used mainly in sewage water preparation.
What activated process is used to separate sewage?
The activated sludge process is commonly used to treat sewage. In this process, microorganisms are added to break down organic matter in the sewage, forming a sludge that settles out, leaving cleaner water behind. The cleaned water is then further treated before being discharged.
