3.2.1 SSP1 Main Septic
This section details the Main Septic Tank and Lift Well serving Bungalows 17–59, designated as SPS1 (SSP1) in the collection network Zone 1.
Location and Overview
- Location: Adjacent to the causeway, near the access road to Bungalows 17–59
Role in Collection Network
SPS1 (SSP1) serves Zone 1 of the collection network. It receives gravity sewer from Bungalows 17–59 and pumped effluent from Zone 3 (via SPS3/SSP3 under-lake rising main). Primary treated effluent is routed to WWTP Primary Tank 1 (PT-1).
Primary Septic Tank
Tank Specifications
| Item | Detail |
|---|---|
| Type | Precast concrete |
| Capacity | ~18,000 L |
| Dimensions | Approx. 2.4 m diameter, 6.0 m length |
Flow System
- Inflow: Gravity sewer from Bungalows 17–59 (DN150 common main) and pumped effluent from Zone 3 (SSP3 under-lake rising main)
- Discharge: Primary treated effluent to WWTP Primary Tank 1 (PT-1)
Lift Well System
Lift Well Structure
- Type: Precast concrete (appears to be 2.4 m diameter pipes)
Pump System
| Item | Detail |
|---|---|
| Configuration | Duty and standby pump set |
| Type | Xylem 3069 Series Submersible Pump |
| Manufacturer | Xylem Water Solutions |
| Power | 3.6 kW / 2.5 hp |
| Flow Rate | Max 2640 L/min |
| Max Temperature | 40°C |
| Power Supply | Three-phase |
| Serial Numbers | 3069 1720 1139 254 / 3069 1720 2446154 |
| Installation | 2 units |
| Manual | Xylem 3069 Series Operating Manual |
Control System
Controller
| Item | Detail |
|---|---|
| Type | HydroStart Dual Pump Controller |
| Manufacturer | MATelec Australia |
| System Status Indicators | Power On, Enabled, Level Alarm |
| Pump Status (both pumps) | Auto/Manual, Pump On, Fault |
| Manual | HydroStart Standard Manual |
Float Switches
| Item | Detail |
|---|---|
| Quantity | 2 units (pump activation and high level) |
| Model | Kelco K10M |
| Voltage | 0–240 V, 15 A resistive |
| Type | SPDT Float Switch |
| Cable | 10 m CPE rubber |
| Manufacturer | Kelco (Australia) |
| Documentation | K-Series Installation Sheet |
Wiring Note
Blue wire is common.
Alarm System
- Features: Visual and audible alarms
- Main Board: Visual alarm strobe for power status
Version Control
| Version | Date | Description |
|---|---|---|
| 1.0 | 2025-10-06 | Initial Release |
| 2.0 | 2026-06-22 | Updated flow paths for WWTP upgrade |
Next Review Date: 2026-12-22