Vortex Grit Chamber

Short Description:

The vortex grit chamber is typically installed upstream of the primary clarifier in municipal wastewater treatment plants. After sewage passes through the bar screen, this unit is used to remove large inorganic particles (diameter greater than 0.5 mm). Most grit removal is achieved via air-lift pumping; however, if grit is extracted using mechanical pumps, enhanced wear resistance is required.

This equipment features a steel tank structure, suitable for small to medium flow applications. It functions as a single cyclone grit chamber, and can also be configured in a combined structure similar to the Dole-type grit chamber. Compared to conventional systems, this integrated design occupies less space and offers higher operational efficiency.

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Working Principle

Raw sewage enters tangentially, initiating a vortex motion. With the aid of an impeller, a controlled swirling flow is generated to promote fluidization. Sand particles, often mixed with organic matter, are scrubbed clean through mutual friction and settle to the center of the hopper under gravity and vortex resistance.

The separated organic materials are carried upward along the axial flow. The collected grit is then lifted via an air-lift or pump system and directed to a grit separator. After separation, the clean grit is discharged into a grit bin (cylinder), while the remaining sewage returns to the bar screen chamber.

Product Features

1. Compact footprint and space-saving design, with minimal environmental impact and good surrounding conditions.

2. Stable grit removal performance under varying flow rates. The system ensures efficient sand-water separation, and the extracted sand has low moisture content for easy transportation.

3. Fully automated operation with a PLC control system that manages sand washing and discharge cycles reliably and efficiently.

Technical parameters

Model	Capacity	Device		Pool Diameter	Extraction Amount	Blower
Model	Capacity	Impeller speed	Power	Pool Diameter	Extraction Amount	Volume	Power
XLCS-180	180	12-20r/min	1.1kw	1830	1-1.2	1.43	1.5
XLCS-360	360			2130	1.2-1.8	1.79	2.2
XLCS-720	720			2430	1.8-3	1.75
XLCS-1080	1080			3050	3.0-5.0	1.75
XLCS-1980	1980		1.5kw	3650	5-9.8	2.03	3
XLCS-3170	3170			4870	9.8-15	1.98	4
XLCS-4750	4750			5480	15-22	1.98
XLCS-6300	6300			5800	22-28	2.01
XLCS-7200	7200			6100	28-30	2.01