Technologies for: Water treatment – Nutrients

Reverse osmosis

Reverse osmosis (RO) is a technology for desalination of brackish or salt (sea) water, using semi-permeable membranes, producing demineralized water and a concentrated saline water stream.  In horticulture applications reverse osmosis, especially low pressure RO systems (operating at max 8 bar)) is commercially and widespread used for treating brackish ground water.  Total costs associated (OPEX […]

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Reducing total dissolved solids using ion exchange

When the ground is desalinated with conventional desalination technology reverse osmosis (RO) often only 50% is converted to desalinated water; resulting in a concentrate of the other 50%. This creates a discharge problem because of the large volume. The reason for the low conversion rate is to reduce the risk of foaling of the membranes. […]

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pH raising of water

The correct pH is very important for the optimal absorption of nutrients. Some nutrients will precipitate when the pH is too high making it impossible for the plants to absorb it. Again when the pH is too low the absorption of some nutrients are restricted. It is recommended that the pH of soil-less production systems […]

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pH lowering with acid dosage

The correct pH is very important for the optimal absorption of nutrients. Some nutrients will precipitate out when the pH is too high, making it impossible for the plants to absorb it. Again when the pH is too low the absorption of some nutrients are restricted. It is recommended that the pH of soil-less production […]

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Capacitive Deionisation for desalination

Capacitive deionization (CDI), is a desalination method. In Capacitive Deionization, water flows through an electrical field that is created by a pair of electrodes. Ions are attracted toward the electrodes and accumulated. CDI does in principle not require any chemicals such as biocides or anti-scalants CapDI typically recovers between 80% and 90% of the water […]

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