Waste water treatment is a process applied to remove impurities in the wastewater or other sewerage from a system and convert it to a usable liquid form which can then be returned back to the main water supply, or otherwise re-used for different purposes. Waste water treatment plants can be located within a community or a large industrial site, and there are a wide range of different methods available to treat the waste water.
A water treatment plant has a number of major roles to play in our everyday lives, but there is one role that is often overlooked, and that is to reduce the amount of solid waste that is generated within a system. This is done by the separation of solids such as paper, wood, plastic, glass and metals, which are known as solid wastes. These wastes then need to be removed from the sewage system, either manually or through mechanical means, before it can be turned into usable liquid or gas forms.
There are a variety of methods available to reduce the amount of solid wastes that are generated in a sewage treatment plant. A common practice in the UK is to separate household waste water from industrial waste water before it is discharged into rivers and streams. In this case, the household waste water is typically treated in a sewage treatment plant before it is released into a river or stream. Many of the different types of solids contained within the waste water can be separated before it goes through any treatment stage.
Another common practice when it comes to sewage treatment of waste water is to reuse the liquid or gas for a variety of different uses. Some of the most commonly used solids in this category include: water for human consumption, oil for lubrication, pharmaceuticals for pharmaceutical manufacturing and other useful chemical compounds, fertiliser, agricultural by-products, coal ash, plastics and so on. As we have mentioned above, wastewater is a huge source of valuable natural resources, and it is often used for many different purposes, including reusing the waste water for domestic purposes, commercial use, and in the manufacture of new goods and products. This is especially true in the case of biodegradable materials such as plant waste and food waste.
The way in which wastewater is treated is also essential for the protection of the natural environment in which it is discharged. The wastewater from a wastewater treatment plant is discharged into a sewage treatment plant, where it is mixed with chemicals such as chlorine or bromine, which kill any germs and bacteria found within it, leaving behind the purified wastewater. After this the wastewater is passed through a number of different filtration stages in order to produce fresh water which is safe to use for human consumption. Some of the other processes include: carbon and magnetic filtration, ion exchange, multi media block, sub-micron filtration, carbon and ceramic filtration, and others. Other forms of wastewater treatment will also remove naturally occurring impurities, as well as removing heavy metals like lead.
The wastewater from a waste water treatment plant is an essential part of our daily lives, and it provides a valuable resource for our environment. This type of water can provide many different benefits for the local water supply and the whole environment as a whole, including the prevention of sewage spills and flooding, which could cause harm to waterways and lakes or reservoirs. A good quality wastewater treatment plant is therefore an important part of our daily lives, and one that is worth protecting.