Tank which consist of transfer pump and aerator. Construction of equilization tank may useful to balance treatment intake in the aeration tank. It will also useful in contolling volume of water to be treated in the aeration tank. As such, equilization tank is very important in optimizing treatment process at downstream i.e if water in the aeration tank reach its volume, feed pump will stop feeding the aeration tank while the incoming water will simultaneously accumulated/be in equilization tank before next coming volume.
Like continuos treatment such as extended aeration (EA), Equilization tank will be a buffle tank for the aeration tank during surge flow. Surge flow in treatment process may cause stability of treatment process like 'over' flowing of MLSS which means, the depletion of suspended's food digestor.
Overflowing of digestor to FE will also cause unwanted bacteria (filamentous bacteria) to grow in treatment tank, hence create hard conditions during settlement process.
Guideline by Malaysian authority during wastewater plant construction shows that, construction of equilization tank will subsequently reduce aeration tank size by specific ratio.
