Nutrient Recovery for Agriculture
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Nutrient Recovery for Agriculture
Food manufacturing wastewaters and farm slurries are rich sources of nutrients. However, the high volumes generated make them expensive to store and transport. They will often be chemically separated and/or diverted to energy generation (e.g. anaerobic digestion, biochar) with a consequent loss in their nutrient potential.
We worked with South Caernarfon Creameries and Bryncir Mart to demonstrate the use of our FloXan® natural chitosan solid/liquid separation aid followed by treatment of released water with our unique shell-based adsorbent product to convert cheese manufacturing wastewater and livestock slurry water into nutrient-dense fertilisers and bathing quality water.
Our technology to recover farm and food nutrients comprises flocculation with a proprietary blend of chitosans, followed by solid/liquid separation by Dissolved Air Floatation (DAF) and wave dewatering. This process generates a high nutrient content cake and clean water.
South Caernarfon Creameries Wastewater Treatment
Our FloXan® technology has been demonstrated at South Caernarfon Creameries’ wastewater treatment plant.
Recovered cheese factory solids were rich in protein, fat and carbohydrate.
Livestock Truck Washdown Water at Bryncir Mart
The livestock truck washdown water was treated using the same technology.
The N and P content of the chitosan-recovered farm manure solids were 70% and 40% higher than without chitosan.
Operating in a pilot-scale, column system, our unique, shell-based adsorbant was able to substantially reduce COD, phosphate and nitrogen in separated water outflows to bathing quality levels. Nutrients were recoverable from the column and the adsorbant could be re-used multiple times.
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