Plant specification
Newell WTP
Newell Regional Services Corp. (NRSC) · Brooks, AB, Canada
Status not reported
Pall/Aria Microza microfiltration (MF)
Source: Lake Newell Reservoir
OEM: Pall (now AriaFiltra)
OEM: Kinetico
Typical filtrate
49.6 L/s
Typical output
4.29 MLD
Highest observed
5.9 MLD
Of Pall design flux
45-55%
Rack 1 operating parameters
Typical value and observed spread during normal filtration
| Parameter | Typical | Observed range | Unit | Typical within spread |
|---|---|---|---|---|
| Feed flow | 55 | 45–69 | L/s | |
| Excess recirculation (XR) flow | 5 | 3.4–6.3 | L/s | |
| Filtrate flow | 49.6 | 36.6–62.6 | L/s | |
| Feed pressure | 135 | 113–166 | kPa | |
| Filtrate pressure | 20.5 | 19.4–21.6 | kPa | |
| Transmembrane pressure (TMP) | 98 | 76–129 | kPa | |
| Flux | 36 | 30–45 | LMH | |
| Flux | 21.3 | 17.8–26.5 | gfd | |
| Temperature-corrected specific flux | 2.1 | 1.8–2.36 | gfd/psi |
Material balance check
55.1 − 5 = 50.1 L/s vs 49.6 measured
Feed − XR differs from measured filtrate by 0.5 L/s (1%): consistent.
- Instantaneous filtrate / feed
- 90%
- Pall stated recovery
- 95.8–96 %
Cycling behaviour
Trace shows regular transitions consistent with automatic Pall sequence (flux maintenance / reverse filtration / air scrub / integrity testing / standby): filtrate flow falls to zero, feed flow changes or stops, TMP reverses or becomes non-representative, filtrate pressure rises, then filtration resumes.
- Extended offline period
- Early morning, Rack 1
- Integrated daily production
- 2 ML that day
Possible causes of lower flux
Candidate explanations listed in the record; none confirmed
- plant demand
- number of racks online
- clearwell level
- operator setpoint
- seasonal water temperature
- deliberate fouling control
- plant-wide flow pacing
- conservative membrane operation