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SRU - Sodium Reduction Unit

Preventing the discharge of nitrate and phosphate from greenhouses

June 2020
Gallery SRU - Sodium Reduction Unit 1
Gallery SRU - Sodium Reduction Unit 1


By solving the problem of the accumulation of sodium in the irrigation water of the greenhouse, SRU solves the problem of the discharge of nitrate and phosphate from greenhouses, reducing the problem of eutrophication of natural water sources, ultimately resulting in sufficient oxygen levels in the water to support aquatic life.

The SRU will help greenhouse growers to completely eliminate the discharge of nitrate and phosphate into the environment. The process allows growers to re-use 100% of the nitrate and phosphate nutrients in the greenhouse. The result is a much better environment because the discharge of nitrate and phosphate causes Eutrophication in rivers. It keeps the sodium level in the greenhouse nutrient solutions constant, removing the need for growers to discharge. The process is based on ion exchange, the only technology that can completely separate nitrate and phosphate from sodium and keep them separate. The result is a full recovery of nitrate and phosphate and the cost-effective discharge of sodium from the greenhouse.

Label Date June 26, 2020
From South Africa
Maturity stage Prototype testing in the real world
Looking For New clients, Funding Opportunities, Partnership Opportunities

The environmental benefits

  • Zero discharge of nitrate and phosphate
  • 42% reduction in CO2 emissions
  • Magnesium saved: 1800 kg/ha/20 years
  • Phosphor saved: 150 kg/ha/20 years
  • Borate saved: 5 kg/ha/20 years

The Financial benefits

  • SRU running costs are covered by the reduction in fertilizers usage resulting in a cost of €1,50/day/hectare.

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile

Optima Agrik (Pty) ltd

Optima Agrik has developed solutions for the lowering of the concentration of undesirable salts in irrigation water.

View company profile
Headquarters Haenertsburg, 0730, South Africa
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Optima Agrik (Pty) ltd has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.