Improved Influent Distribution And Increased Surface Area For Bairds Malt
Bairds Malt is a leading UK-based supplier of high quality malt products to the Brewing and Distilling Industries across the globe. The Pencaitland plant produces 47,000 tonnes of malt per year specifically for the global distilling market. They have successfully used trickling filter technology to treat their wastewater produced from the maltings process for many years. Two of their biotowers shown in the picture above had come to the end of their working life and required replacement.
ACWA Services Ltd were chosen to dismantle the existing biotowers and build 2 new ones directly on the same bases. The new towers are part of a turnkey solution to process the waste waters using 21st century technology to reduce energy bills for Bairds. Each biotower is approximately 4.8m x 4.8m section and contains 125m3 of PP vertical flow structured media. They were designed to reduce an influent COD of 1000mg/l by at least 60% at a flow rate of 560m3/day.
ACWA Services selected 2H Water Technologies to manufacture and install plastic structured media into the new biotowers based on achieving the required COD/BOD reduction. We supplied a combination of PP cross-flow media and vertical flow media to vastly improve influent distribution through all the media to maximise biomass population in the biotowers. The new media also provides 25% more surface area than the previously installed media but with the same size openings to give more process performance.
2H manufactured and supplied BIOdek type KVP619 vertical flow media with 125m2/m3 specific surface area. ACWA Services chose our BIOdek structured plastic media for the Bairds Malt project because it is highly durable, has a large surface area and can be used to construct modules with the optimal compressive strength, high void volume and large specific surface area needed to deal with higher organic loadings. The results confirm ACWA made the right choice.