-low speed vertical shaft aerator: slow turbine designed to aerate and mix the activated sludge in a water treatment plant.
-AIRMAX: trademark of the high efficiency low speed surface aerator designed by KAMPS.
-water aeration: action of oxygenate the waste waters where the micro-organisms, keeping this oxygen, will remove the contaminants.
-activated sludge: mixture of primary treated or screened sewage (or industrial wastewater) combined with organisms to develop a biological floc, and in witch atmospheric air is introduced so that the sludge is activated. This activation reduces the organic content of the sewage.
-oxidation ditch: long channel of an elliptical or circular shape equipped with an aeration equipment called a rotor for generating a water flow and stirring water in the channel to supply oxygen.
-lagoon: group of natural wetlands acting as biofilters, removing sediments and pollutants from the water. In the lagoon, wastewater is treated through a combination of physical, biological and chemical processes. Much of them occur naturally, but some systems use aeration device to add oxygen to the wastewater.
-SOTR (standard oxygenation transfer rate): OTR in clean water when the DO concentration is zero at all points in the water volume, the water temperature is 20°C, and the barometric pressure is 1.00 atm (101 kPa).
-SAE (standard aeration efficiency): SAE = SOTR per unit total power input. Power input may be based on either delivered, brake, or wire power, and this basis must be stated.
-Carrousel: Trade name DHV: oxidation ditch with vertical shaft low turbine.
-ultrafiltration membrane: semipermeable “out-in” membrane against witch a liquid (wastewater) is forced by hydrostatic pressure. The suspended solids and solutes are retained, while water pass through the membrane.
-continuous sand filter: sand water filtration system, where the sand continuously cleans itself, providing a higher filtration quality.
-deaerator: A deaerator is a device that is used for the removal of air and other dissolved gases from feedwater to steam-generating boilers. The aim is to avoid corrosion damage in the metal piping and other metallic equipment.
The STORK-KAMPS deaerator operates on the principles of physical deaeration, the process taking place in two stages:
- by spraying water in the steam space (preliminary deaeration);
- by passing steam into the water reservoirs by means of the so-called steam rake (after deaeration).
- The equilibrium between gas dissolved in water and gas in steam is given by Raoult’law.
-sludge dewatering: Removal of water contained in the excess sludge, in order to reduce its volume after water treatment.
-surface aerator: slow turbine designed to aerate and mix the activated sludge in a water treatment plant on the surface of the basin.
