Watson-Marlow Bredel pumps have been chosen for critical sludge pumping work at the only main waste treatment plant on the Island of Jersey.
The Island of Jersey with a population of 87,500 relies on a single waste treatment plant located in the town of St Helier, the Bellozanne Depot where all solid and liquid waste from the 110 pumping stations is treated.
Working with a single plant on a small island with limited space, the Jersey Public Services Department needed to be sure of a totally reliable and effective pumping solution that could deal with the peaks and troughs of the holiday season and operate 24/7.
Sludge transfer and digester feed pumps from Watson-Marlow Bredel were therefore selected to ensure this reliability.
Over the years, Public Service Stores, part of the Jersey Government has grown to expect a high level of service, quality and performance from Watson-Marlow Bredel peristaltic pumps and hoses.
The Bellozanne Depot uses Watson-Marlow Bredel SP100 high flow, high pressure hose pumps for primary sludge transfer and digester feed.
Matthew McNulty, Purchasing Office for Public Service Stores comments that the increasingly stringent levels of discharge consent and the need to constantly reduce operating costs require that critical processes are carried out reliably, hence their preference for Watson-Marlow Bredel pumps over the last 20 years.
Key advantages include consistent and accurate performance as well as self-priming and dry-running features.
The six SP100 pumps at Bellozanne Depot feed sewerage from settlement tanks into digesters where the methane gas is used as an energy source for other processes.
The sludge is then moved to a drying plant where the moisture is removed and the remainder made into pellets.
The remaining finer effluent is completely processed in the secondary treatment and ultraviolet plants.
Philip Bolton, Business Development Manager from Watson-Marlow Bredel explains the benefits of peristaltic pumps in sewerage treatment.
Operating costs are very high with traditional positive displacement technology such as progressive cavity pumps.
Pumping abrasive sludge causes excessive wear on stators and rotors, and the cavity design also means that fluid cannot be pumped as quickly or effectively.
Peristaltic technology on the other hand, eliminates these problems. Additionally, reinforced hoses in peristaltic pumps can easily be replaced, eliminating downtime associated with mechanical failure while keeping maintenance costs low.
Designed for continuous operation at pressures up to 16 bar/220 psi, the SP100 hose pumps can easily handle most sewage treatment applications.