3.2.1 SSP1 - Main Septic Tank & Lift Well
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 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
- Type: Precast concrete
- Capacity: ~18,000 Litres
- Dimensions: Approx. 2.4m diameter, 6.0m length
Flow System
- Inflow: Receives 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 2.4m diameter pipes)
Pump System
- Configuration: Duty & Standby pump set
- Type: Xylem 3069 Series Submersible Pump
- Manufacturer: Xylem Water Solutions
- Power: 3.6 kW / 2.5 hp
- Flow Rate: Max 2640 lpm
- 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
- 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
- Quantity: 2 units (pump activation and high level)
- Model: Kelco K10M
- Specifications:
- Voltage: 0–240V, 15A resistive
- Type: SPDT Float Switch
-
Cable: 10 m CPE rubber
Wiring Note
Blue wire is common
- Documentation: K-Series Installation Sheet
- Manufacturer: Kelco (Australia)
Alarm System
- Features: Visual & 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