GRIT & GREASE REMOVAL EQUIPMENT
MODELS GRIT & GREASE REMOVAL EQUIPMENT
EM55 - GRIT AND OIL REMOVAL SCRAPER BRIDGE, SUCTION TYPEE
|Application||Grit and oil removal from municipal and industrial waste water.|
|Characteristics||Longitudinal flow channel, with tapered section (downwards). The channel is divided into two zones: the grit removal zone (normally aerated) the oil removal zone. The two zones are separated by a longitudinal baffle.|
|Operation||The waste water goes through the grit removal system longitudinally; the grit which sediments on the bottom is lifted and conveyed to a lateral channel by air-lifts or submersible pumps. The floating substances in the oil removal zone are conveyed to the hopper by a surface scraper.|
|Materials||Compact equipment in hot dip galvanized carbon steel or stainless steel.|
|Installation||In a concrete channel.|
|Separation||Grit particles larger than 200 microns.|
|Grit lifting systems||Air-lift
|Optional||Separation between grit removal-oil removal zones.
Power supply by cable winding reel.
Air blowing system.
The water speed in the grit removal channel is lower than 0.3 m/sec., therefore the grit having a larger size than 200 microns settles on the bottom. The air distributed by the diffusers fluidifies the grit before it sediments and removes the organic substances which deposit on it. These organic substances and the other substances in the water, thanks to the air effect, float and flow together to the oil removal zone which is on the channel side and is not aerated, then they are taken away by a surface scraper.
The grit settled on the bottom is lifted by a submersible pump or air-lift and conveyed to the lateral channel.
The recommended air delivery is of 10-15 Nm3/h per metre of length of the grit removal channel.
MECHANICAL SOLUTIONS FOR THE SCRAPER BRIDGES
- scraper bridge with concrete runways, equipped with tyred wheels and contrast wheels
- scraper bridge with rails
|1.1||Max. flow rate in the channel||:m³/h||(*)|
|1.2||Width of the grit removal zone||:mm.||(*)|
|1.3||Width of the oil removal zone||:mm.||(*)|
|1.5||Aeration zone air flow rate||:m³/h|
|(*) to be advised when asking for a quotation|