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4 Steps to handle & prevent overflow Problems in a sewage treatment plant



The primary role of a sewage treatment plant is to treat the sewage water. From our observations, we have seen plants not performing this role, and also, the fundamental part of holding the influx water does not happen. Sometimes the water overflows because the tanks are undersized or the people have increased over time. Whatever the reason, the problem needs to be solved immediately, and the association or management has to find a permanent solution. Otherwise, it may cause inconvenience to the tenants and will lead to anger. In Large sites or industries, the STP is away from people, it does not pose a huge problem, but for the STP’s located near apartments or houses, people will not tolerate it. To avoid these problems, people have found a simple way of leaving the sewage to drainage or rainstorms, which is a temporary solution and costs more in the long term.


There are several reasons for the tanks to overflow; let’s look at a few of them and the solution.



1st Step: Check the size of the plant


Sewage in sewage treatment plants undergoes several processes to remove the suspended particles—the treatment plants need enough retention time to complete each process in the plant.  E.g., The collection tank should be prepared to at least hold a day’s total sewage inflow, and others similarly require particular retention time. For some reason, if the plants are undersized and cannot hold the influx, they overflow. So it is always essential to check the size of the tanks.



2nd Step: Increase the capacity


Once you have identified that the capacity is insufficient, there are several methods to handle the situation. I want to share the most cost-effective and straightforward way in the long term.


  1. Increase the size of the tanks for the treatment process to happen; otherwise, use membranes to filter, which may increase the capital and maintenance cost.
  2. OxyO provides solutions to modify a few things in the existing plant and make the plant perform, which reduces the maintenance cost and makes the plant serve better.



3rd Step: Arrange a temporary solution to Handle while alterations are happening


When you have decided on the method to correct the plant,  plan the sewage to be diverted. The housekeepers clean the premises for the work to start. The duration for the plant to set right may vary for different technologies. It may take from 2 weeks to 4 months to fix the plant right. If you plan properly, the plant gets set right in the shortest time.



4th Step: Planning for any increase in the flow.


The last step is prevention; as the plant gets old, the capacity might increase. So it is always to anticipate the maximum flow for a minimum of 10 years and then construct the plant. Also, it is better to review the plan once in 10 years. If the plant needs any alteration, it is better to plant before and do it to prevent sewage overflow and cause unnecessary trouble.



Arun Karunakaran

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