A High Performance Vortex Cavitation Reactor System

What Is VoDCa?

VoDCa , an abbreviation for Vortex devices for Cavitation, is an advanced oxidation reactor that harnesses power of cavitation.

Cavitation is a physical phenomenon involving bubble formation, growth and adiabatic collapse, with the consequent generation of intense pressure and temperature (~1000 atm, ~5,000 K). These conditions lead to the formation of hydroxyl radicals (OH•), extremely reactive oxidising agents that can decompose pollutants

VoDCa’s patented, CFD-optimised design, comprising a tangential inlet and cylindrical axial outlet connected by a disc shaped chamber, imparts and conserves angular momentum of fluid through the process. It creates a sufficient pressure drop to produce cavities/ micro-bubbles which are collapsed in a controlled manner downstream of the system.

Value Features of VoDCa

Unlike the conventional devices used for hydrodynamic cavitation (orifice,venturi etc.), rotating flow in a VoDCa offers several attractive features suitable for beneficially harnessing cavitation


Market Applications of VoDCa


Industrial WWTPs

Industrial Waste Water treatment is highly complex and no single solution can fit all the use cases. Advanced oxidation solutions such as cavitation are useful in instances where conventional technologies are not suitable. Also there exists a hidden opportunity wherein the extent of process intensification brought about by the OH radicals can be so significant that it can be a very attractive commercial proposition and thus should be pursued for its investigation. With its maintenance free and robust retrofit , VoDCA maximises the generation of OH radicals without addition of chemicals which in turn maximises the potential of process intensification in Industrial Waste Water Treatment Plants.


Water De-Scaling In Cooling Towers

VoDCa can also be used for Water Descaling from Cooling Towers. At the moment this product is still being developed , however trials can be offered under an agreement.


Reaction Intensification In Multiphase Systems

VoDCa can also be used for intensifying multiphase reactions (gas-liquid, liquid-liquid). However such specific developments using VoDCa are undertaken on a project basis.

See The Introductory Video

VoDCa Retrofit In Industrial WWTPs

COD Reduction

20 to up-to 70% reduction

More Biogas – Digester

Improving Bio-Degradibility


Ammoniacal Nitrogen Reduction

Color Reduction

15 to up-to 60% reduction

Our Team

Rahul Dahule

Rahul has a track of versatile career roles within a successful startup and multinationals. Within Water Knight Rahul wears many hats; he has a background in chemical engineering and has a rich technical and business experience in product development, plant operations and marketing within established startups  and multinational companies such as The Dow Chemical Company and Philips Lighting. Rahul is researching and developing new technologies and new markets that leverage the technology of vortex cavitation. He has four publications in scientific journals and has five patents (two granted) to his credit. A true creative thinker and a fine art connoisseur, Rahul’s mind is always on lookout for complex experiments and meaningful inventions.

Ranjeet Utikar

Ranjeet, is a result driven professional with over twenty years extensive experience in technology development in chemical / oil and gas, and industrial biotechnology sector. Ranjeet’s work in the area of industrial flow modeling has resulted into direct measurable benefits to the chemical, environmental and auto industries. Ranjeet is also a senior academic researcher in Chemical Engineering at Curtin University, Australia and he has published more than 60 peer reviewed research papers in premier international journals. Ranjeet, together with Vivek had successfully founded Tridiagonal Solutions in the past serving process solutions in flow modelling to various industrial segments. He is an ardent art lover and spends his perfect day by riding his high-tech motorbike on a long and adventurous journey.

Vivek Ranade

Vivek, a world renowned expert, who has contributed significantly to chemical engineering science and practice. His work has resulted in new insights and better designs of industrial flow processes. He has successfully developed solutions and has facilitated their implementation in a wide range of industry. Vivek is the principal inventor of VoDCa, and is constantly looking out to solve challenging problems within various industrial processes. He is also a professor of Chemical Engineering at Queens University in Belfast. He has published more than 125 papers and four books, and is co-inventor of more than 20 patents (granted or filed). A firm believer in humanity, Vivek actively supports various campaigns for social causes.

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