What is difference between Stormwater and Wastewater?
You're probably aware of the key differences between wastewater and stormwater.
The distinctions in how they are handled in a town or city environments may be more difficult to grasp. Stormwater may eventually reach a water treatment facility, but not through the sewer, as one might assume. Wastewater is handled differently. Unless properly handled, it is not designed to enter bodies of water.
What is Stormwater?
Stormwater is rain, snowmelt, and ice melt that happens after a storm or on a warm winter or spring day. That water is usually absorbed back into the earth in a rural or forested location. In a metropolis, there is pavement and concrete to keep water from reaching the soil. It needs to go someplace, thus storm drains, ditches, and pipelines aid in water management.
When people see storm drains in a city, they automatically think that everything goes into a sewer. In reality, multiple systems are in place to handle wastewater and stormwater. After a storm or abrupt snow/ice melt, the water that floods into a storm drain enters a drainage system and is returned to rivers, lakes, streams, and ponds untreated.
One issue with untreated water entering a body of water is that it hasn't been cleansed. That water can take up impurities such as road salt, car fluids, debris, and agricultural fertilizers and pesticides, which can then end up in the water. This causes a negative reaction by allowing algal blooms to take over and contaminate a water supply. People should take care to keep these toxins out of storm drains and ditches.
There is a possibility that a river, lake, pond, or other body of water flows into a water treatment facility. For example, if your city pulls water from a neighbouring lake to supply public companies and houses inside the water district, rainwater that enters the lake will ultimately reach the water treatment plant. It would be cleansed and disinfected there before making its way through pipes to homes and businesses.
What is Wastewater?
Wastewater is the liquid emitted by showers, washing machines, sinks, toilets, bathtubs, dishwashers, and other devices. This water is sent through pipes into a sewer or septic tank. If it is discharged into a septic tank, an effluent filter prevents particles from entering the pipes and clogging the pipelines leading to the leach field.
Water passes throu?gh sewage lines to the sewer system for houses and businesses inside a water district that has sewer lines. It is then transported to the district's wastewater treatment plant.
What happens at the Wastewater Treatment Plant?
The first step of wastewater treatment strategy includes collection and pumping. Sewage is collected and big debris are removed using screens. Following that, it is allowed to settle in a grit chamber, where sand and other tiny particles settle. They are removed and disposed of at a landfill.
The wastewater is pumped into tanks where the sludge and particles settle and are collected. That sludge and garbage may wind up in a factory that warms it to kill the germs and turn it into fertilizer, depending on the wastewater treatment plant. The residual effluent is now sent to a secondary treatment facility.However, at this stage, oxygen is added to the residual wastewater to encourage microbes to devour it. Up to 90% of the garbage and chemical pollutants are eliminated by the end of this treatment.
What is left is disinfected using chemical agents and further processed to guarantee that the chemicals used to sterilize the water are less than the Government's permitted limits. UV lighting is utilized in certain wastewater treatment plants to help with this process. Once the water is safe for reuse or discharge into bodies of water, it is pumped to water storage tanks and then distributed to nearby homes and businesses, or it is piped into a lake, river, stream, or other body of water.
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