With the tightening of legislation and permit standards, Birdseye asked MSE Hiller to develop a solution to treat 400m3/h of wastewater leaving its pea processing site in Hull. The objective was to remove suspended solids from the wastewater to allow for a cleaner effluent to be disposed of to Yorkshire Water sewers.
Birdseye is one of the largest pea processors in the world, and the largest in the UK, processing and freezing around 50,000 tonnes of peas during the harvest season from June to August. Their facility at Hull has 200 growers within a 30-mile radius, which means the peas can be picked, transported and frozen in the shortest possible timescale.
During the pea season, the factory processes 1,000 tonnes of peas 24-hours a day. Fresh water is used to wash the peas and the wastewater was traditionally treated by the local water company.
In June 2019 MSE Hiller carried out pilot testing during the pea season to prove the concept of treating the wastewater by centrifugation; separating solids from the liquid. This proved successful and the company was invited to develop a full-scale process with four DP664Hy DecaPress centrifuges. The recovered solids are discharged as a dry stackable material suitable for transportation off-site by normal road-going skip, trailer or lorry.
The space constraints on site and the short project timescale were going to be a challenge, but a proactive project team was assembled, including the client and site operator, to ensure a timely delivery of the project in readiness for the 2020 season.
Despite the challenges of building a large process plant during the COVID-19 outbreak, with only a few days to spare before the pea season began, MSE Hiller delivered the completed plant on time and on budget.
Ivan Fomin, Managing Director at MSE Hiller said: “The client trusted us to deliver this solution and worked positively and proactively to help us achieve the target. It is great to see what solid teamwork can achieve under challenging circumstances”.