New Biomar system for fermenting whey / ferment excess whey or whey permeates / singular fermentation of whey and whey concentrates

For some time now it has been common practice to ferment excess whey or whey permeates together with dairy wastewater. Fluctuating sales on the market for whey products and technological changes in the production process are making the singular fermentation of whey and whey concentrates more and more interesting. CSB values of between 20,000 and 140,000 milligrams per litre mean a high gas yield, even with smaller quantities.

On account of high salt and nutrient concentrations (N, P), the biotechnological process is significantly more complex than with wastewater from the dairy industry. A stable anaerobic process with a constant gas yield requires suitable reactor technology. A high level of biotechnological know-how with suitable strategies for substrate pre-treatment and nutrient adjustment is required. For this purpose, EnviroChemie has modified a reactor system from the Biomar series and tested it for more than one year.

An essential component is the option of holding back biomass using centrifugal technology. A powerful decanter, in conjunction with modified gas separation devices, increases operational reliability and efficiency. Our own biotechnological department determines the nutrient conditions in the specific whey concerned in advance, and makes recommendations concerning any supplementary additives that may be required. The first large-scale technical plant will be entering service in Sweden shortly. Further projects are being planned.