Wednesday, September 28, 2016

What are the Different stages of Sewage Treatment Process?

Have you ever wondered where does this all wastewater go, once you are done with bathing and cleaning purposes in your home? You can always get in-detailed information about the sewage process from your water supplier. For example, if you are a consumer of Thames Water, you can call them directly at Thames Water Contact Number.

In the meanwhile, you can also go through this information over here. Wastewater from flushing your toilet, bathing, washing sinks and general cleaning directly goes down the drainage system in your home and then into a pipe, which eventually joins a larger sewer pipe under the road. This larger pipe is joined to a major pipe that leads to the wastewater treatment center.

The sewage process consists of following steps:

During the process of screening, large objects such as, diapers, nappies, cotton buds, face wipes, sanitary item and even broken bottles, bottle tops, plastics and rags that might block or damage the industrial equipments, are removed from the wastewater. Furthermore, special equipments are also used to get rid of grit that gets washed into the sewer.

The process of ‘primary treatment’ works on separating the organic solid matter (or human waste) from the wastewater. In this process, the wastewater is put into large settlement tanks, where the solid waste gets settled to the bottom of the tank. This settled solid waste is called ‘sludge’. In these circular tanks, large scrappers continuously scrape the floor of the tank and push the sludge towards the center where it is pumped away for further treatment. The rest of the water is then moved to the next stage of the treatment process.

Even though, during the ‘primary treatment’ option, it’s made sure that the visible bits of sludge have been removed from the wastewater, the water suppliers still ensure that the smaller invisible nasty bugs are also taken out from the rest of the water . During the ‘secondary treatment’ stage, the water is put into large rectangular tanks, known as aeration lanes. In these tanks, air is pumped into the water to encourage good bacteria to break down and eat the tiny bits of sludge that weren’t able to be taken care of while the sludge scrapping process. The good thing is, the more these bacteria eat the sludge, the more they grow and multiply and hence make sure that the water is sludge-clear.

In the ‘Final Treatment’ process, the almost treated wastewater is made to pass through a settlement tank. However, due to settling of the bacterial action, more sludge is formed here and hence once gain scrapping is done to remove the sludge and collect the water for treatment. Ultimately, the water is ‘supposed’ to be free of any harmful substances and chemicals in this stage and is allowed to flow over a bed of sand where it is filtered to remove any additional particles. This filtered water is then released into the river.

If you want to know how the sludge is used to generate electricity, please feel free to call Thames Water Contact Number and their team of advisors will guide you with the available resources to answer your queries.


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