Return Activated Sludge (RAS) System
for Leachate Treatment Plant
Production Capacity:
120 m3/day
Key Results
- Able to reduce the ammoniacal nitrogen from 200mg/L to less than 5mg/L meeting the Department of Environment’s discharge limit.
- Maintained total suspended solid (TSS) and chemical oxygen demand (COD) below 50mg/l and 400mg/L respectively.
- Clarifier tank with return activated sludge (RAS) system to avoid sludge carry over to final discharge.
Sludge conditioning tank with polymer dosing
Aeration system
Polymer preparation tank with dosing pump to clarifier and conditioning tank
Top of clarifier with buffer and V-notch system to avoid sludge carry over
Bacteria unloading to seed aeration tank
Class session of overall system before handover
Separation of water and sludge after sludge conditioning
RAS pump controlled by timer
