|SUBJECT:||Enhance ammonia removal under shock loading conditions – Petroleum Refining WWTP|
|PRODUCT:||Formula 150 – nitrifier bacterial blend|
|SYSTEM OVERVIEW:||DAF->Caustic addition -> Complete Mix Activated Sludge System-> 2-Secondary clarifiers (D=140’; SWD = 12’)
|TREATMENT OBJECTIVE:||To faciliate the recovery of ammonia removal in this large refinery WWTP. Ammonia spills in the process had resulted in excessive influent ammonia loading to the activated sludge basins with subsequent breakthrough into the effluent.|
|TREATMENT PROGRAM:||Formula 150 was applied to the activated sludge basins as follows:
*Adjustment of the influent pH to 9.5 was recommended to increase the pH in the aeration basins.