In the filtration of a certain sludge, the initial period is effected at a constant rate with the feed pump at full capacity until the pressure differential reaches 400 kPa. The pressure is then...

Extracted text: In the filtration of a certain sludge, the initial period is effected at a constant rate with the feed pump at full capacity until the pressure differential reaches 400 kPa. The pressure is then maintained at this value for the remainder of the filtration. The constant rate operation requires 900 seconds, and one-third of the total filtrate is obtained during this period. The collected cake is to be disposed. Neglecting the resistance of the filter medium and if the time for removing the cake and reassembling the press is 1200 seconds, the total filtration cycle in seconds is Blank 17 (EXPRESS YOUR ANSWER IN FULL SIGNIFICANT VALUE i.e NO DECIMAL VALUE)