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Case Study 1
Municipal Treatment with Belt Filter Press
Sewage Treatment
Plant
Conventional activated sludge treatment, with primary and secondary clarification
and chemical phosphorous removal.
| Population serviced:
|
320,000 |
| Average daily flow: | 42 MIGD (190 MLD) |
| Sludge production: | 50 t/day |
Application
|
Equipment: |
Simon-Ashbrook-Hartley
2 m belt press |
|
Old
Mixer: |
Venturi
(flapper valve) |
|
New
mixer: |
6”
OPTIFLOCTM |
|
Flow:
|
70
- 130 IGPM (5.3-10 L/s) |
|
Sludge
type: |
Raw
primary and secondary |
|
Composition:
|
50-60%
primary 40-50% secondary |
| Waste paper: | 0-10% |
|
Conditioner:
|
Allied
Colloids, dry, cationic Secodyne, mannich |
Belt
Filter Press Performance
| Venturi | Optifloc TM | Improvement | |
| Feed TS (%) | 3.3 | 3.3 | |
| Cake TS (%) | 20.9 | 19.9 | 5% |
| Pressate TSS(mg/L) | 2909 | 1309 | 55% |
| Dosage(kg/t) | 5.0 | 3.2 | 35% |
Comparison of dosage
requirement with conventional
(Venturi) mixing and OPTIFLOCTM
