Products Description

Working Principle
The grit removal system operates by decantation to remove grit, sand, and rocks. Influent water flows slowly into
the inlet hopper to allow grit to settle at the bottom of the tank. Then, captured grit is conveyed upward by the
shaftless screw conveyorl. Effluent water evacuates through the top of the hopper to allow complete grit removal.

Our Advantages
Separation efficiency can reach 96 ~ 98%, and particles with a particle size of ≥0.2mm can be separated; shaftless screw conveyor, no bottom bearing, no consumables, reasonable structural design, no blockage, and low maintenance costs.


Model | HLGC-260 | HLGC-320 | HLGC-360 | HLGC-420 |
Diameter of Screw(mm) | 220 | 280 | 320 | 380 |
Capacity(L/S) | 5-12 | 12-20 | 20-27 | 27-35 |
Motor Power (KW) | 0.37 | 0.37 | 0.75 | 0.75 |
RPM(r/min) | 5 | 5 | 4.8 | 4.8 |
Yixing Holly Technology Co., Ltd. is located in Yixing, Jiangsu Province, China. Established in 2007, Holly Technology is a
domestic forerunner in producing environmental equipments and parts used for sewage treatment.
Nowadays, our company has developed into a comprehensive enterprise integrating production, trading, design and installationservice of sewage treatment equipments.










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