Screen: is a preliminary mechanical treatment and the first item of the wastewater treatment system, the task of screen is to retain solids, solid waste that falls into the wastewater stream to avoid congestion of the water pipeline, damage to the pump, and causing difficulties to the next treatment process.
Bar Screen

DrumScreen

Basket Screen

Screw Screen
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Steps creen

Grid treatment equipment: The equipment to process grid during wastewater treatment progress are grid collector, grid classifier, grid washer
Grid collector

Grid collector

Grid classifier

Travelling Scrapper: collect the oil and scum on water surface before the biological treatment progress


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