GreenTech California (GTC) is a technology company based at the University of California, Irvine (UCI). It has filed a global utility patent for its work in nanobubble technology. This is in relation primarily to water treatment plants using fine filters and RO (Reverse Osmosis). In water treatment there are 3 major problems with RO:
1) significant electrical energy used
2) scaling and biofilm fouling of membranes
3) harsh and polluting chemicals to membranes.
GTC has solved these by creating millions of nanobubbles (“NBs”). Each NB, with its strong negative charge, attracts positively charged nanoparticles of salts and/or metals, bacteria, viruses and protozoans to form large clusters.
Features:
1) being in clusters, nanoparticles become inert
2) clusters are too large to pass through RO membrane but are small enough to be removed by the waste flow. Thus, membrane fouling by scale forming salts (primarily carbonates, bicarbonates and sulfates of calcium and magnesium) are signif...
GreenTech California (GTC) is a technology company based at the University of California, Irvine (UCI). It has filed a global utility patent for its work in nanobubble technology. This is in relation primarily to water treatment plants using fine filters and RO (Reverse Osmosis). In water treatment there are 3 major problems with RO:
1) significant electrical energy used
2) scaling and biofilm fouling of membranes
3) harsh and polluting chemicals to membranes.
GTC has solved these by creating millions of nanobubbles (“NBs”). Each NB, with its strong negative charge, attracts positively charged nanoparticles of salts and/or metals, bacteria, viruses and protozoans to form large clusters.
Features:
1) being in clusters, nanoparticles become inert
2) clusters are too large to pass through RO membrane but are small enough to be removed by the waste flow. Thus, membrane fouling by scale forming salts (primarily carbonates, bicarbonates and sulfates of calcium and magnesium) are significantly reduced and RO operated without adding antiscalant chemicals.

The technology is also used in cooling towers (power stations, hospitals, hotels, etc), in aquaculture and irrigation (horticulture, agriculture, parks, golf courses etc). The technology uses physics and biology to replace chemicals in water processing. It thereby saves significant costs in chemicals and electricity to process water and seawater.
The nanobubble generator (NBG) is a very simple and inexpensive in-pipeline device. It is a unique device for water treatment and cooling towers - that also removes scaling and prevents corrosion in pipes.
The utility patent is extremely valuable. It means that GTC will be the only company worldwide permitted to use nanobubbles in water treatment plants that use fine filters and Reverse Osmosis.
This is one of several nanobubble generators. GTC also has use of other nanobubble patents, for example one for wound healing and dental plaque.
The patents are filed by expert attorneys with the ability to enforce infringements worldwide.
We aim to work directly with public and private water treatment and cooling tower companies and manufacturing industries around the world.
GTC are uniquely able to implement nanobubble generation in tertiary treatment at a very low cost and minimal disruption to operations in existing plants as well as new plants. It is applicable to potable water use including desalination plants as well as reuse/recycling water operations.
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Ramen Patel
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Ramen Patel Engineer Director - Engineering & Technical Services

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Better water management means a healthier environment. GreenTech California is positioned to positively impact the way we think about sustainable water management, and offers a solution that makes water treatment economically viable and environmentally responsible.