How much do you know about the factors that affect the sludge dryness of the stacked screw sludge dehydrator? In order to help users understand more product knowledge, our staff will give you a brief introduction of its related knowledge.

1. Sludge properties: when other parameters are fixed, the sludge dryness of different industries will be different after dewatering. For example, the sludge dryness of paper industry should be dry, while the sludge dryness of petroleum industry should be wet.

2. In order to save cost, some manufacturers of stacked screw sludge dehydrators shorten the filter body of stacked screw sludge dehydrators. If the filter body is too short, the filtrate will be discharged before it is completely filtered out, resulting in the sludge not drying.

3. The back pressure gap of the back pressure plate is too large, it will not form squeezing pressure on the sludge, and the sludge is not dry. The smaller the back pressure gap is, the greater the squeezing pressure is, and the greater the dryness of the sludge is. However, the back pressure gap is too small, which will lead to the sludge can not be discharged, resulting in axle holding.

4. Flocculation effect of sludge: the dosage of PAM. Generally, Cationic PAM can be used for sludge dewatering. The dosage of PAM directly affects the flocculation effect of sludge. If the dosage is small, the flocculation effect is poor, and the sludge dryness is poor. If the dosage is too large, the sludge will be sticky and slippery, and the sludge dryness will become poor. The appropriate dosage can ensure the appropriate dryness of sludge The stability of sludge inflow concentration and flow rate is also an important factor affecting the flocculation effect. Generally, the sludge concentration from the sludge pool will fluctuate obviously. When the sludge concentration becomes lower, the sludge inflow will increase. If no one intervenes, the dosage will be insufficient, resulting in poor flocculation effect.

5. In order to improve the sludge output, some sites adjust the spindle speed higher, which will also cause the filtrate to be discharged before it is completely filtered, resulting in the sludge not dry.