A system for cleaning re-used water for agricultural irrigation
The agricultural sector consumes around 70-80% of world water resources, nearly three times that of the industrial sector. The use of Solvay Solution OXYSTRONG 15 to disinfect waste water at Milan-Nosedo WWTS allows it to meet high quality irrigation standards while having a smaller economic average effect than the dominant option (UV lamps) and no hazardous by chlorinated by products formed by Sodium Hyopochlorite. The public authority ARPA verifies the quality in terms of chemical and microbiological parameters, acute toxicity test (Daphia magna), and algae growth test (Pseudokirchneriella subcapitata); all controls have demonstrated high quality of water from biotic indexes, improved soil permeability of the area, and restoration of biodiversity and freshwater fishing activities derived from a 10-year perspective. The purified water is utilized to irrigate 3700 hectars of land, producing grains capable of meeting the needs of 140.000 people each year.
Positive facts about OXYSTRONG® 15 for reuse in irrigation of disinfected wastewaters
Generates NO chlorinated by-products (see attached table), To homogenous dosage of a water solution to a water stream is easier to be controlled then homogenous irradiations due to sediments and algae deposition, Liquid dosage requires much
Waste water disinfected with Oxystrong is used for irrigation of 3700 ha where high-value crops are cultivated (corn, rice, grassland & wheat) corresponding to the production of cereals feeding 140.000 people (based on cereals consumption per-capita
Tests preformed by regional Local Authority for the Environmenton on irrigated area have showed improvement of soil permeability, restoration of biodiversity and freshwater fishing activities
Oxystrong(R)15 rapidly breaks down to innocuous products (vinegar, water, and oxygen) as demonstrated in post treatment tests (no chlorinated by product. Sustainability of Oxystrong1 5 is even visible through the improvement of soil permeability of the ar
10% reduction in CO2 emissions compared to sodium hypochlorite Regional authority for the environment verifies the quality of water in terms of chemical, microbiological parameters, acute toxicity (Daphia magna) and algae growth (Pseudokirchneriella subca
Regional authority for the environment verifies the quality of water in terms of chemical, microbiological parameters and execute as well acute toxicity test (Daphia magna) and algae growth tests (Pseudokirchneriella subcapitata); all controls have demons
Oxystrong(R) 15 versus mainstream alternative UV irradiation is less capex intensive and more flexible operations allowing better cost-perfomance: Oxystrong 0,006-0,008 €/m3, UV 0,009-0,010 €/m3 water
The water reuse allows the farmers to save money in purchasing water from the municipalities (lower costs then fresh water), as well the WW station has economic return by providing water to municip.
Oxystrong(R) 15 has very low maintainance costs (just regular checks) versus mainstream alternative UV irradiation requiring replacemet of damaged lamps and cleaning of lamps from algae and sediments.
OXYSTRONG® 15 for reuse in irrigation of disinfected wastewaters website : https://solvay.com/en/brands/oxystrong-15
