99-15: Online Cooling Tower Cleaning and Water Division Codes and Standards

99-15: Online Cooling Tower Cleaning and Water Division Codes and StandardsThis paper highlights specific problems associated with a Cold Water Basin Cleaning in an eleven (11) cell cross flow cooling tower in Northern Alberta at the Syncrude Canada Site. The cleaning involved structural modifications of nine (9) of the eleven (11) cells and a diversion of 100,000 gallons of water per minute to maintain plant operation. This would be the first cleaning of the tower in 20 plus years of operation and two major hydrogen mishaps

120°F and 150°F

In cases where calcium is the blow-down determining constituent

Historically Bromine based non-oxidizing biocides have been an industry standard with occasional Isothiazolin or Gluteraldhyde dosage

Actual operating experience on and design modifications to a zero discharge process-cooling tower wherein the waste waters provided the make-up

Effective microbiological control can be achieved by monitoring microbial levels as well as actual micro biocide treatment levels

In the wake of this requirement

the easiest

rather than a primary control output

Heat transfer coefficient measurements of this steady-state freezing process indicate improved performance over the traditional ice-on-coil process

due to this stream's high salinity

sewage plants

In almost any water treatment application