The water and wastewater treatment journey starts with sampling and analysis of your raw water or influent, respectively, to determine the key physical, chemical and biological characteristics. Representative sampling, as well as accurate testing and analysis of a broad range of relevant parameters, is an important foundation for understanding the properties of your water and/or wastewater source and determining what might be achievable.

At Parkway, we provide a range of analytical testing services, including:

• Drinking water testing
• Groundwater testing
• Inorganics & metals testing
• Organics testing
• Wastewater testing
• Microplastics in water testing
• PFAS testing
• Aquatic toxicity testing
• Dioxins & furans testing
• And several other specialty testing services, including microbiological characterisation and physical profiling to determine filterability profile, and therefore determine the treatability, with conventional filtration equipment.

In addition to our inhouse testing facilities and our partner facilities at Victoria University, we work closely with a range of NATA accredited laboratories to provide timely and accurate testing services, for a wide range of commercial and industrial applications.

Further details about these services are outlined in the analytical testing services section of our website.

If you are unsure about what type of sampling and/or testing may be suitable for your specific treatment objectives, please Get in Touch (refer tab). Our team of experienced technicians and water treatment specialists at Parkway, can assist in determining the most suitable testing requirements.

Whilst performing comprehensive water sampling and analysis is important, ultimately, the sufficiency of this testing, can only be determined in the context of what the overall treatment objectives are. The objectives for water treatment and wastewater treatment are contrasted by the desire for water to be treated to make it safe for the purpose of human consumption, as opposed wastewater being treated for the purposes of making it safe to be released (discharge) into the natural environment.

It is important to accurately determine treatment objectives from the outset, in order to focus the evaluation of suitable treatment processes and ensure their efficacy against the respective objectives.

Common water treatment objectives include treating surface or groundwater including bore water, to ensure the treated water meets Australian Drinking Water Guidelines, as outlined by Water Quality Australia, an Australian Government Initiative.

Similarly, the process for effectively managing wastewater from its source, through its collection, transfer, and treatment, to its disposal or reuse, in Australia, is outlined in the Australian Wastewater Quality Management Guidelines, published by Water Services Association of Australia.

Depending on the treatment objectives, the proposed treatment process is likely to need to comply with a range of standards and regulations, which should be considered from the outset, to ensure an efficient design process to ensure the proposed solution is fit-for-purpose.

Once the treatment objectives have been outlined (Step 2) and the characteristics of the raw water or wastewater have been determined (Step 1), a suitable treatment process needs to be systematically developed.

At Parkway Process Solutions, we specialise in the development of robust and effective treatment processes incorporating a range of conventional water treatment processes including:

• Coagulants and flocculants, as part of a broader pre-treatment strategy to remove suspended solids.
• Dissolved air flotation (DAF) as part of clarification strategy.
• Biological processes, from simple aeration, through to MBR and more advanced processes.
• Filters , media filtration and advanced membrane processes including ultrafiltration (UF), nanofiltration (NF), brackish water reverse osmosis (BWRO), and seawater reverse osmosis (SWRO), including RO systems.
• Disinfection processes, from UV disinfection and common chemical disinfection, through to more environmentally sustainable electro-chlorination systems.
• In addition to this short list, is a range of much broader processes suitable for project specific applications, as well as a range of proprietary process technologies developed by Parkway over many years.

Process Screening

Given the typical complexity of raw water, an effective treatment process will generally require sequential treatment through a series of unit operations (process steps), as outlined above.

Parkway has developed a methodical approach to systematically evaluating a range of unit operations to ensure the respective treatment objectives are achieved in an efficient manner.

This process involves:

• Process simulation, based on industry standard as well as proprietary tools developed by Parkway.
• Process validation, which depending on the application may involve a physical test in the form of an experimental activity such as a jar test in the event of testing a coagulant, or more complex testing, such as piloting, for more precise evaluation of membrane performance.

Flowsheet Development

Based on the successful performance of the respective unit operations, these will be integrated in a logical sequence, to initial develop a block flow diagram (BFD), followed by the development of an integrated flowsheet, which is often depicted in the form of a process flow diagram (PFD).

Process Equipment Selection

Once the PFD has been developed, our process engineering team develop detailed equipment lists, based on overall treatment objectives and broader project requirements.

At Parkway, we work closely with many global brands including DuPont, Graco, Grundfos, Hach, Georg Fischer, Mann+Hummel, Prominent, Purolite, Tsurumi, amongst many others, as well as leading local suppliers, including Aquacorp, Envirofluid, Fluidpro, Polymaster, Total Rubber, UV Guard, Waterco and 100’s of other leading industrial water treatment related suppliers.

As the master distributor for these brands in Australia, we provide efficient procurement options as we carry stock across our Australian store network, and also provide technical support for our clients, to ensure project success.

Process Evaluation

Before transitioning to the project execution phase, depending on the scale of the project, it may be appropriate to perform technoeconomic evaluation/s, to ensure the proposed treatment process is not only fit-for-purpose, but also represents suitable value for money.

Additional information about these services, including feasibility studies performed by Parkway, are outlined in the Process Development Services section.

Process Design Package

Depending on the scale of the project, project delivery model and the scope of supply, Parkway be required to provide a suitable process design package, which provides a range of process engineering related deliverables, required for the successful delivery of the process plant, within the broader project context.

Process Technology Package

For more advanced projects, requiring more innovative process flowsheets incorporating proprietary process technologies developed by Parkway, Parkway will provide a process technology package as part of the process engineering related deliverables.

Following development of a Suitable Treatment Process (Step 3) which is represented by the process plant, the remainder of the project will need to be developed collaboratively with the client, to ensure the project remains in line with the project objectives.

Additional requirements, typically required to support the treatment process (process plant) include:

• Balance of plant (BOP), which includes non-process infrastructure (NPI).
• General layout for the project, initially in the form of a general arrangement (GA) drawings.
• Range of additional engineering related outputs.
• Engagement with third parties, including regulators, as relevant.

Whilst Parkway specialises in the development, design and delivery of the core treatment process, Parkway has additional capabilities in relation to BOP, and works closely with strategic partners to be able to support successful project delivery.

Parkway often works closely with civil engineering and construction contractors, to ensure the process plant can be effectively integrated into broader project and site-specific related requirements.

Depending on a specific project location, type and scale, Parkway will endeavour to provide the most effective and best value solution to support our clients meet their project objectives and achieve success.

In the simplest scope of supply, Parkway supplies a range of industrial water treatment related products and services, on a “supply only” basis.

Where Parkway has been engaged during the earlier project phases, particularly during the process development phase, Parkway will work closely with the client to develop a project execution plan (PEP), which may involve Parkway offering to deliver a given project through the following commercial models:

• Design and construct (D&C).
• Build, operate and transfer (BOT).
• Build, own, operate and option to transfer (BOO-T).

Alternatively, Parkway may elect to provide a more limited scope focused on:

• Equipment supply only.
• Treatment plant design only.

Additional details related to project development services provided by Parkway are outlined in the Project Engineering Services section of the Parkway website.

Once the PEP has been developed, and the project has transitioned to the execution phase, before site works commence, fabrication related activities typically commence in a workshop to:

• Fabricate process equipment, including tanks, vessels, piping and similar items.
• Assemble equipment into various packages, which may involve modularisation in the form of packaged skid or containerised solution (installed into a modified shipping container), to minimise the duration and risks associated with onsite installation of the plant.
• Before equipment packages are dispatched from the workshop, they are often tested and/or pre-commissioned through a range of processes, including factory acceptance testing (FAT).

In addition to an established workshop at PPS-Darwin, the primary fabrication workshop operated by Parkway is in the South East of Melbourne in Victoria, through a wholly-owned subsidiary, Tankweld.

Tankweld provides a wide range of industrial fabrication services including specialist aluminium, stainless steel and carbon steel rolling, bending and fabrication services, as outlined below.

Fully Equipped Workshop

• Established 3,000m² fabrication workshop with substantial laydown areas supports production of industrial-scale plants.

Key Equipment

• Heavy machinery including cranes with capacity up to 10 tonne, presses up to 110 tonne and specialised equipment inventory.
• Large vehicle fleet includes trucks, crane truck, forklift & additional vehicles.

Fabrication

• Experienced team of qualified tradespeople proficient in using MMAW, TIG, FCAW, SST, MIG welding & fabrication processes.
• Fabrication with range of materials including aluminum, steel, stainless steel, specialty alloys and plastics, including UPVC.

Additional details about Parkway’s workshop fabrication capabilities, is outlined in the Tankweld section.

Whilst Parkway specialises in the development, design and delivery of the core treatment process, Parkway has additional capabilities in relation to the balance of plant (BOP), and works closely with strategic partners to be able to support successful project delivery, including onsite installation.

In order to maximise the efficiency of onsite installation, during the workshop fabrication process (Step 6), Parkway perform a range of important functions in the workshop, including:

• Fabrication of process equipment, including tanks, vessels, piping and similar items.
• Assembly of equipment into various packages, which may involve modularisation in the form of packaged skid or containerised solution (installed into a modified shipping container), to minimise the duration and risks associated with onsite installation of the plant.

Parkway often works closely with a range of specialised contractors (including electrical and civil), to ensure the process plant can be effectively integrated into broader project and meet site-specific related requirements.

Additional details about Parkway’s onsite installation related capabilities, is outlined in the following sections:

• In South-Eastern Australia, refer to our Tankweld division.
• In the Top End of Australia, refer to PPS-Darwin.
• In Western Australia, refer to PPS-Perth.

Where Parkway has provided onsite installation (Step 7) related activities, Parkway will typically provide the corresponding start-up and commissioning related support services, which directly relate to the relevant scope.

The important process development activities performed earlier in the project lifecycle (Steps 3 & 4), provide the Parkway process specialists with a strong technical basis, to ensure the process plant is successfully commissioned, with key performance parameters in line with the engineered design.

Additional details about Parkway’s start-up and commissioning related capabilities, is outlined in the following sections:

• In South-Eastern Australia, refer to our Tankweld division.
• In the Top End of Australia, refer to PPS-Darwin.
• In Western Australia, refer to PPS-Perth.

Following successful commissioning (Step 8), the water or wastewater treatment plant is officially handed over to the client to operate and maintain the plant. During regular operations of the treatment plant, a range of consumables including water treatment chemicals, filters, membranes and other consumables are often required by the operator. As an established Australian distributor of these products from leading global brands, Parkway ensures our clients have reliable access to everything they need to maintain reliable operations.

In addition to regular operations, treatment plants typically require scheduled maintenance to ensure effective performance. As outlined above, Parkway provide a range of products and services, including experienced operators and technicians, to maintain reliable operations and troubleshoot any issues.

Additional details about Parkway’s operate and maintain related capabilities, is outlined in the following sections:

• In South-Eastern Australia, refer to our Tankweld division.
• In the Top End of Australia, refer to PPS-Darwin.
• In Western Australia, refer to PPS-Perth.

As treatment plants age, particularly as they reach their design life, it can be challenging to ensure reliable performance, particularly if project or regulatory requirements have become more stringent since the plant was first installed.

In order to ensure water treatment related infrastructure remains safe, effective and fit-for-purpose, it may be appropriate to perform periodic reviews.

As experienced process engineers, Parkway is well placed to assess project performance against a range of parameters, and where relevant, make recommendations which may involve a treatment plant upgrade or retrofit, depending on the specific requirements.

In many respects, the upgrade of an existing treatment plant (brownfield project) has many similarities to a new (greenfield) project, as the raw of wastewater needs to be sampled and analysed (Step 1), new objectives determined (Step 2) . . . all the way through to the successful design, installation and commissioning of the upgrades.

Additional details about Parkway’s local capabilities, is outlined in the following sections:

• In South-Eastern Australia, refer to our Tankweld division.
• In the Top End of Australia, refer to PPS-Darwin.
• In Western Australia, refer to PPS-Perth.