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LINKS WHAT IS A COUNTER CURRENT DAF?
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The AJM EnviroDAF™ is designed with a unique Counter Current
Dissolved Air Flotation (DAF) system to help overcome some of the problems
encountered with traditional older style Dissolved Air Flotation (DAF)
systems. This counter current system offers a total solution to the common
problem of sludge carryover under high or irregular loadings, without
the need for operator intervention. |
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As can be seen from the following diagram, with the older traditional system,
sludge is moved to the outlet or discharge end of the DAF tank by the
scraper system. Thus, at times when the sludge removal rate is less than
the sludge production rate, the sludge will build up at the outlet end
resulting in the common problem of carry over and contamination of the
treated water. |
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The AJM EnviroDAF™ system design causes the sludge to be scraped to the
inlet end of the DAF tank. Thus as the sludge in the DAF tank starts to
build up the incoming air saturated recycle stream works with (and not
against, as with the old style DAF systems) the scraper mechanism to elevate
the sludge and automatically remove it at a higher rate. |
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As can be clearly seen, the sludge is constantly moved away from the outlet
end of the AJM EnviroDAF™ thus preventing any carry through of sludge
into the discharge. |
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Other advantages include:
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