upflow

Depending on the raw water quality, the illustrated structure could be used to host alternative treatment systems such as upflow roughing filters installed in the outer ring and two slow sand filters placed in the centre tank.

8. Classification of roughing filters 1996

It was, therefore, decided to construct a treatment scheme applying natural purification processes such as upflow roughing filters in layers and slow sand filters.

8. Classification of roughing filters 1996

You can propel enemies by catching them in the 'upflow' and even crush them against ceilings.

Jolt 2008

You also have some stronger upflow (ph) of the winds.

CNN Transcript Aug 8, 2009 2009

Agriculture contributes less than 2 per cent to GDP in GCC countries, but it overexploits groundwater resources, most of which are non-renewable, resulting in their depletion and quality deterioration due to seawater intrusion and the upflow of saltwater.

Global Environment Outlook (GEO-4)~ Chapter 6 2008

* The white, wet upflow regions tend to be in the warm western parts of the oceans, like the Warm Pool, while the dark, dry downflow regions tend to be in the cooler eastern parts of the oceans.

Bill Gray Presentation « Climate Audit 2006

There is, therefore, a constant eastward breeze in the air of the outer galleries, and an upflow during the lunar day up the shafts, complicated, of course, very greatly by the varying shape of the galleries, and the ingenious contrivances of the Selenite mind.

First Men in the Moon Herbert George 2006

The upflow regions are the areas with white specks heavy thunderstorms.

Road Map #3 « Climate Audit 2006

Henry could see on the horizon huge cumulus clouds rearing over zones of rising air, thunderheads that were sustained by the constant upflow of warm water and air.

A Furnace Afloat JOE JACKSON 2003

When raw water quality is low, adding upflow roughing filters is recommended.

Chapter 5 2000