TechnologyKey Information about Wastewater Treatment Plant Design

AdminApril 15, 2019376 min

These days, having hygienic drinking water is essential to all of us. Without clean, water people can get very sick. Luckily few cities make sure that water is always clean enough for us to drink safely. One type of water treatment is dissolving Air Flotation, and it is an exciting procedure. It uses air to clean the water, and it actually does a good job. You would be surprised to find out all of the bacteria that it removes.

Wastewater treatment is a vast process for many towns and industrial fear such as paper mills, chemical, and natural gas processing plants, oil refineries and other different industrial facilities. This contains many types of wastewater treatment systems designed specifically for oily water treatment, sewage water treatment and the removal of a variety of other solids dirty water through a wide range of industrial processes.

When professionals design a wastewater treatment plant, they usually make sure they take into account some important factors relating to the characteristics of the wastewater. In this article, some important considerations about wastewater treatment plant designs have been given below:

  • The wastewater characteristics that experts must consider while designing a treatment plant are the flow of the effluent, along with biological, chemical and physical properties that can affect the quality of effluent.
  • They can decide on how large their effluent treatment plant should be depending on the estimated inflow into the plant which is typically estimated in cubic meters per day almost the world over. It is necessary for engineers to get the right estimates of variations in the inflow in order to get the hydraulic computations right. This is also necessary to help determine the size of conveying pipes and channels correctly.
  • Experts also incorporate in their design the estimated increase in the inflow of effluent in the foreseeable future. Or, at least, the Plant should be built scalable.
  • There can be seasonal variations in the size of inflow. For instance, there could be larger inflows during the day than in the night. Again, the inflow is likely to be greater during the rainy season. They would need to stabilize such inflow and make it constant or near constant so as to protect the functioning of treatment processes downstream.
  • They can achieve this through the use of equalization tanks or ponds. Equalization ponds offer another added benefit. The toxic substances in the effluent can affect the processes that treat the effluent. This effect can be reduced by diluting the toxic effluent by mixing it in equalization ponds with effluent that has lesser toxic composition.

The Plant should be able to stand shocked loads during festival seasons, like Christmas-New Year, Ramzan, etc., and other vacations.

You also need to take into account some physical characteristics of the effluent, while designing your plant. These are the color of the effluent, the solids in it, its temperature and odor.

Among different types of presses that are capable of handling the treatment process, the design using filter plates and cloths remains the most fundamental and efficient. The capability of the equipment is undisputed, as these machines can remove as much as 99% of solid waste products and sludge from the fluid. The use of these presses speeds up the overall treatment process, and also reduces the “biochemical oxygen demand” or “BOD” of the liquid, meaning the amount of oxygen consumed by microorganisms breaking down the organic waste in the water (secondary treatment). For all these reasons and more, the nearly 200-year-old technology is now a mainstay of the wastewater treatment industry.


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