The first, in the north, has seven Landia JetMix units going into operation in sludge tanks, whilst in the south, nine mixing systems have been specified. One of the mixing solutions from Danish company Landia, JetMix incorporates its original chopper pump invented in 1950, fitted with jetting nozzles configured for each tank. Similar to its AirJet aeration system, which continuously reduces the particle sizes of solids, and reduces odours, JetMix is externally mounted for easy servicing.
Landia technical sales engineer Howard Burton said, “We were approached by a water company and after a raft of contracts for differences (CFD) modelling, they began their rolling programme of upgrades, appointing framework contractors to handle each project. Another water company embarked on a major site upgrade, and they too chose Landia JetMix. Water companies are embracing the benefits of low-energy usage and total cost of ownership from a product that will give reliable service.”
Previously, at Glatfelter, a global supplier of engineered materials, Landia JetMix replaced a mixing system for an open-topped 1000m3 above ground at 7m glass-lined steel tank used for pH correction.
The mixer that was replaced was said to be cumbersome to retrieve, causing health and safety issues. It was also reportedly costly downtime due to breakdowns. Now, the retrofitted Landia JetMix ensures that there is no buildup of crust in the centre of the tank, which regularly used to clog up the old pump. Following the first JetMix system, Glatfelter invested in four Landia units, two for a 1500m3 vessel, one for a 500m3 tank, and one for a below ground 150m3 pit, solving crusting issues.
