Troubleshooting
Polymer Problems
Polymer make-up, ageing or dosing faults
Many dewatering problems are really polymer problems: poorly made-up solution, aged or degraded polymer, air-locked dosing pumps or the wrong product for the sludge. Because polymer drives flocculation, faults here show up as wet cake and cloudy filtrate.
The symptom
Many dewatering problems are really polymer problems: poorly made-up solution, aged or degraded polymer, air-locked dosing pumps or the wrong product for the sludge. Because polymer drives flocculation, faults here show up as wet cake and cloudy filtrate.
Causes and corrective actions
| Possible cause | Corrective action |
|---|---|
| Under- or over-diluted make-up solution | Prepare to the recommended concentration and allow full maturation. |
| Aged or degraded polymer | Use fresh solution; avoid prolonged storage of made-up polymer. |
| Air-locked or worn dosing pump | Bleed air, check tubing and calibrate the pump. |
| Wrong polymer charge or molecular weight | Run jar tests to select a suitable product. |
RF Series Screw Press
Two-Screw Unit with Control Panel
Ready-to-connect dewatering unit with touch panel control, flocculation tank and cake discharge chute.
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