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Primary and secondary
settling
tank
Longitudinal scraper
The  -longitudinal
scraper is suitable for application in rain water collecting tanks,
primary and secondary settling tanks (single, dual and triple tanks)
as well as for sludge tanks and is provided with mechanical or
hydraulical operated scaper shield or as suction scraper with our
without pumps.
Circular sraper
The -circular
scraper is suitable for application in rain water collecting tanks,
secondary settling tanks as well as for sludge tanks and is provided
with a centrally (tank centre) or externally (tank border) installed
drive. The scraper bridge can reach across the total tank diameter
(up to 70 m), 2/3 of the diameter or across the half tank.
Chain scraper
The -chain
scraper is constructed with steel chains or non-metal chains
and is suitable for sewage treatment plants with rectangular
sedimentation tanks.
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