Raath and Associates specialise in Water and Wastewater treatment solutions. Using proven, all-natural and innovative technologies, Raath and Associates provide tailored solutions to water-based issues.
Nature has spent millions of years developing natural processes that maintain the delicate balance of the environment.
Raath and Associates harness nature’s own technology and use it strategically and precisely, to match the demands of humanity’s ever-developing society.
Wastewater treatment is a complex process. Any solution utilised to treat wastewater ultimately involves the removal/reduction of contaminants and nutrients – making the residual water safe to discharge to our environment.
Modern treatment options use a combination of biological, mechanical or chemical processes. To achieve effective treatment, any process requires a combination of energy or time to be added to the system.
Mechanical processes need electricity to operate
Chemical processes need chemicals to be added
Biological processes need time to work
Raath and Associates patented Combined Works system optimises the balance between energy and time.
Combined Works minimises the mechanical process required – removing costly operations such as membranes or air compressors, instead replacing the energy infused in the system with the energy of gravity.
Combined Works requires NO ADDED CHEMICALS to produce safe, clean, and compliant water.
Combined Works creates a stable biological environment that results in an average sludge age of 40 days (more than twice the normal
time in alternative processes). This allows nature’s process to occur efficiently and safely. This also makes byproducts of the process much less volatile than alternative treatment methods.
Raath and Associates Combined Works system is capable of treating wastewater, from domestic and industrial sources, to the highest standards imposed in New Zealand and Australia.
For over 100 years Wastewater has been treated using activated sludge systems. These systems harness nature’s natural process, and over time
that system has been progressively refined.
The Combined Works process is simply the next step in that progress. The current limitations of the traditional activated sludge treatment are
diminished, and the efficiency of the process is increased. This results in a lower energy, higher quality treatment – all while using the tried and tested techniques that are both proven and fully natural.
Combined works uses two of the most proven systems in the Wastewater treatment industry: Biofilters and Aeration Tanks. These systems are simply arranged in a new and revolutionary way.
Our patented system involves only one moving part – a standard circulation pump. Everything else within the process harnesses the power of gravity, and nature’s own biological treatment.
The revolutionary arrangement of the OpEx v Revenue Combined Works system results in its low footprint, requiring very little land area. The system can be completely contained within a traditional building (aesthetic can be fully customised), and blend seamlessly within a development or town. The building also eliminates limitations of traditional activated sludge treatment by easily regulating temperature and ensuring the process is odourless.
Not only does combined works use treatment systems that are proven over generations, it also optimises those processes. By using the energy of gravity to generate fine bubble aeration, and having only one moving part, the energy required for the system in a fraction of any competing system.
With such a substantial reduction in energy demand and minimal moving parts, the operating costs of the Combined Works system are much lower than alternative methods.
The growth charges and rates imposed by authorities are designed to cover the cost of initial build and operating costs – for systems that are simply more expensive. Therefore, by applying the same rates to the Combined Works system, there is a real and tangible ability to construct the system for less than alternative, and generate ongoing profit over
the long term, on a low maintenance asset.
Example of a 600 section subdivision using Watercare Services Ltd 2024 wastewater rates.
Example generates Profit of $420,000 per year when development is complete
Profit generated from the system scales positively (larger developments generate higher proportional profit).
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