Upgrades & Automation
Extending asset life through intelligent modernization.
SNG Engineering specializes in transforming legacy water infrastructure into future-ready facilities. By integrating advanced automation with robust mechanical and electrical retrofitting, we enhance the capacity, reliability, and safety of existing Water Treatment Plants (WTP) and Wastewater Treatment Plants (WWTP) while reducing long-term operational costs.
PLC & SCADA Integration
We provide sophisticated automation solutions that act as the "brain" of your treatment facility. Our team designs and programs custom Programmable Logic Controller (PLC) and Supervisory Control and Data Acquisition (SCADA) systems to ensure seamless, autonomous operation.
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Custom Logic Programming:
Developing site-specific Functional Design Specifications (FDS) to automate complex treatment sequences and process interlocks. -
Centralized Data Visualization:
Creating intuitive Human Machine Interface (HMI) dashboards for real-time monitoring of flow, pressure, and water quality parameters. -
Remote Management:
Enabling secure, off-site access to facility controls, allowing for rapid response to system alarms and process adjustments.
AS/NZS 3000 (Wiring Rules)
AS/NZS 4024 (Safety of Machinery)
Mechanical Retrofitting
SNG Engineering revitalizes aging facilities by replacing or upgrading critical mechanical components. We focus on enhancing system resilience and energy efficiency without the need for complete facility reconstruction.
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High-Efficiency Component Replacement:
Upgrading outdated pumps, valves, and mixers with modern, low-maintenance alternatives. -
Filtration System Overhauls:
Retrofitting existing tanks with advanced Membrane Bioreactor (MBR) technology or UV sterilization units to meet modern water quality standards. -
Corrosion & Wear Remediation:
Restoring structural and mechanical integrity to equipment exposed to harsh wastewater environments.
AS 3735:2001 (Concrete Structures for Retaining Liquids)
AS 4100 (Steel Structures) | AS/NZS 4024 (Safety of Machinery)
Electrical Infrastructure Upgrades
A reliable facility requires a robust electrical foundation. We upgrade site power distribution and control systems to support modern high-load equipment and ensure compliance with updated Australian safety standards.
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Switchboard & Control Panel Upgrades:
Designing and installing custom-built electrical panels and Motor Control Centres (MCCs). -
Power Quality & Distribution:
Optimizing site cabling and backup power systems to prevent downtime during grid fluctuations. -
Energy-Saving Drive Integration:
Installing Variable Frequency Drives (VFD) to precisely control motor speeds and significantly reduce power consumption.
Relevant Engineering Standards: AS 3000
AS 3008 (Cable Selection)
AS 3017 (Electrical Verification)
AS 3012 (Construction Site Power)
Real-Time Operational Control
We bridge the gap between physical infrastructure and digital intelligence. Our integration services ensure that every part of your facility communicates effectively, providing the data needed for proactive maintenance and optimized resource use.
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Advanced Analytical Sensing:
Integrating high-precision pH, turbidity, dissolved oxygen (DO), and flow sensors to provide the raw data required for autonomous decision-making. -
PID Control Loop Optimization:
Implementing Proportional-Integral-Derivative (PID) control loops to ensure exact chemical dosing and motor speeds, maintaining process stability even during variable influent conditions. -
Automated Compliance Reporting:
Utilizing SCADA-generated EPA compliance reports and environmental discharge audit logs to simplify regulatory oversight and ensure transparent environmental stewardship.
ADWG (Drinking Water Guidelines)
WSA 04 (Sewerage Code of Australia)
AS 4799 (Underground Utility Infrastructure)
Explore our other services
Is your facility ready for the future of automated water management?
Start your modernization consultation with SNG Engineering today!
Common Questions Answered
Frequently Asked Questions
A Programmable Logic Controller (PLC) is the industrial hardware that directly controls the physical equipment, such as starting a pump or opening a valve based on sensor data. Supervisory Control and Data Acquisition (SCADA) is the overarching software layer that collects data from multiple PLCs, providing a centralized interface for operators to monitor trends, manage alarms, and view facility-wide performance.
Yes. SNG Engineering specializes in integrating modern automation into legacy infrastructure. We achieve this by installing new instrumentation and wiring into existing electrical panels and developing a Functional Design Specification (FDS) to bridge the gap between old mechanical assets and new digital control systems.
A Membrane Bioreactor (MBR) combines biological treatment with high-efficiency membrane filtration. It can be retrofitted into existing Wastewater Treatment Plant (WWTP) basins to significantly improve effluent quality and increase treatment capacity within the same footprint, often eliminating the need for secondary clarifiers.
Our triple ISO certification ensures that every upgrade is delivered with technical rigor. ISO 9001 governs our software version control and hardware traceability; ISO 14001 ensures that mechanical retrofits improve the plant’s environmental footprint; and ISO 45001 mandates strict safety protocols during the “live” transition from manual to automated control.
A Variable Frequency Drive (VFD) is an electrical device used to control the speed of an AC motor by varying the frequency of the power supplied to it. In a treatment plant, VFDs allow pumps and blowers to run at precisely the speed required for the current demand, often reducing energy consumption by 30–50% compared to fixed-speed operations.
SCADA systems automatically log critical process data – such as turbidity levels, chlorine residuals, and discharge flow rates, directly into environmental discharge audit logs. This ensures that EPA compliance reports are generated with 100% accuracy, providing a transparent and tamper-proof record that aligns with ADWG and WSA 04 standards.
Upgrading a Water Treatment Plant (WTP) primarily focuses on potable water safety, often involving precision chemical dosing and UV sterilization to meet ADWG standards. Upgrading a Wastewater Treatment Plant (WWTP) focuses on nutrient removal and environmental protection, frequently requiring the modernization of biological reactors (like IDEA or MBR systems) to meet strict discharge licenses.
Yes. SNG Engineering is fully certified under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. Our team of engineers and technicians are experienced in delivering compliant upgrades across NSW and Queensland, ensuring all electrical works meet AS/NZS 3000 and all mechanical installations adhere to relevant Australian Standards.
