Investment in new wastewater treatment equipment has enabled a leading producer of cereals and cereal bars to overcome the challenges it was facing with a very problematical effluent. Deeside Cereals had first introduced a new DAF unit (Dissolved Air Flotation) from Watermark (a division of WA Cooke Group) to separate suspended solids and for the thickening of sludge. However, the FOG (Fats Oils and Greases) caused by ingredients such as chocolate, rape seed oil and lecithin (phospholipids) had at one point sent COD (Chemical Oxygen Demand) up to 78,000. ‘Very Strict Compliance Levels’ Karl Johnson, Safety, Heath & Environment Manager at Deeside Cereals, commented: “The DAF unit from Watermark has proved very successful, bringing COD down to 6,000 initially, but with very strict compliance levels to meet for Dŵr Cymru Welsh Water, we wanted to make further improvements to our treatment regime.” He added: “Working closely with Watermark, we agreed…