SPECIAL WORKS
eight-inch holes across it to try to even out the flow distribution.”
Simultaneously mixing and aerating
The recommended solution certainly wasn’t the cheapest, but it came in the form of a simple design, combining a proven chopper pump with a venturi nozzle; the Landia AirJet. Simultaneously mixing and aerating, this system effectively keeps wastewater fresh; economically delivering dissolved oxygen to provide complete aeration.
The next challenge for Black Water was how to incorporate what would be six of the new Landia AirJets onto both sides of the tank.
New Landia AirJets in El Salvador.
They told me I was crazy taking it on, but I already knew that. At least I’ll never be as crazy as the person who thought that it was such a good idea to design a slanted-floor rectangular tank for a paper mill’s wastewater! Additionally, the tank was divided into two halves by a concrete wall, so we had to cut
“Landia helped us calculate the best positioning,” said Roberto, “and I was really pleased that their vastly experienced Aftermarket Manager, Ken Jacobs came over from the US to help ensure that the installation went smoothly. The Landia AirJets had to be installed with middle guideline poles that had to be embedded in specially built
concrete blocks. This allowed the aerators to be then slid to the bottom of the basin. The Landia Chopper Pumps that are part of the AirJet system do a great job and are proving very reliable. Everything is fine now. Thank goodness those horrible odors are no more!”
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