Grit Classifier
Grit classifier is a grit removal, conveying and dewatering device. It is used to separate sand, gravel and fine solid particles in water and is very helpful in wastewater treatment. The structure used in the design and construction of the gravel classifier allows the unit to remove up to 95% of the sand from the water.
The unit is made of 304 or 316 stainless steel. It is robust, compact and fully enclosed to minimize maintenance and simplify installation.
Working principle of grit classifier
- The grit-water mixture enters the classifier’s settling hopper. Flow slows in the hopper, allowing heavier mineral particles such as sand and grit to settle while the separated water flows toward the overflow.
- A slowly rotating inclined screw collects settled grit from the bottom of the hopper and conveys it above the water level. Water drains back into the hopper as the grit moves up the trough.
- The sand separator is connected to the clear water reservoir, which is flushed with clear water after each separation of sewage to keep the interior clean;
- The dewatered grit is discharged into a collection container. Separated water returns to the treatment process at the point specified by the plant design. Separation performance depends on particle size and density, feed flow and the selected classifier.
Features
- Temperature, moisture and impact resistance
- Simple operation
- Reduced energy consumption
- Low installation, maintenance and repair costs
- Ability to design and produce gravel classifiers of different sizes and capacities
Applications
The presence of solids and fine particles (such as sand) in water is one of the biggest limitations of various industrial equipment and can cause severe damage to its components. Therefore, solids removal for many applications is accomplished by a variety of methods such as grit classifiers.
- Grit removal in drinking water treatment
- Removal of fine particles from water in the wastewater pre-treatment stage to prevent damage to pumps and other components
- Reduction of grit deposits, abrasion and pipe clogging
- Improving the efficiency of clarifiers and aeration equipment
KUOSI, the manufacturer of grit classifiers for wastewater treatment, will provide you with all the information you need to know about grit classifier design points, working principles and prices.