Outstanding Sludge Dewatering Performance for Margaret River WWTP
Water Corporation’s Margaret River WWTP was recently upgraded to a new Biological Nutrient Removal process to increase capacity and produce higher quality effluent for discharge.
Project Overview
The upgrade included a new sludge facility to thicken and dewater the waste activated sludge produced from the process.
Hydroflux provided the sludge treatment equipment which consisted of:
- HUBER SDSIC Sludge Thickener
- Transfer Pumping
- HUBER Q-PRESS® Rotary Screw Press
Waste Activated Sludge (WAS) is pumped to the SDISC and flocculated using a cationic polymer. The SDISC thickens the WAS from 0.3 to 4% dry solids. The thickened sludge is stored in a fully mixed short span retention tank and then is dosed with a polymer and is dewatered in a HUBER Q-PRESS®.
The two stage process results in an optimum operating regime for the Q-PRESS® in that a high dry solids load is sent to the Q-PRESS® which maximises the output cake solids.
Whilst the Q-PRESS® can be fed with raw mixed liquor the pre-thickening stage does provide for a high cake solids and hence volume reduction. This installation has mirrored the outstanding performance of the HUBER Q-PRESS® at other Water Corporation sites in terms of solids capture and cake solids. HUBER Q-PRESS® is sized to achieve a capture rate of greater than 95% without the need for downstream filtration.
The entire machine including the main case and legs is fabricated from 316L stainless steel which provides superior resistance to corrosion.
| Item | Value |
| Thickener Type | HUBER SDISC |
| Capacity | 10—40m3/h |
| Output Thickness | 4—5%DS |
| Dewatering Type | HUBER Q-PRESS® |
| Capacity | 2—8m3/h |
| Output Cake Solids | 18—20%DS |
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