Hi Ahmad, Here are my ...

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Hi Ahmad,

Here are my comments

CALCULATIONS:              
  Site Parameters              
  Qmax Qavg BODin BODout          
  m3/d m3/d mg/L mg/L          
  14400 5000 240 20          
                   
  Design assumptions taken            
  f/m MLVSS Y Qufl/Qavg Qwaste/Qufl        
  1/d mg/L MLVSS/BOD 2ry clrf ratio of flows        
  0.3 3000 0.5 0.26 0.03        
                   
  Calculated  Parameters            
  V HRT Qufl Qwaste MLVSS ufl SRT for V     
  m3 d m3/d m3/d mg/L d    
  1333 0.3 1300 39 11538 7.28 6.67    
            On wasted MLVSS On cells generation  
COMMENTS:                
1.- In above calc, additional volume (2xV) is not "active", is equalization volume  
2.- When assuming additional 2xV is with MLVSS, many things may happen: anaerobic decay first
3.- IF 2xV is aeration provided (i.e. DO or respirometry) sludge aging may occur  
4.- If Q  increses significantly over design outflows and wasting at 2ry Clrifier would go wild
5.- In above conditions on 4. the plant will not comply