Whilst workers from a landmark building in Canada are at home sleeping, Landia’s pumping and mixing equipment quietly goes to work removing highly concentrated sewage at a flow rate of just 2.2 litres per second from a 31,000 litre cistern.
In fact, due to a lack of existing sewage capacity, the authorities in this city could only allow the prestigious seven-storey CAD $100M building to go ahead if such an overnight wastewater removal system could be put securely into place.
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Supplied by Engineered Pump Systems of Port Coquitlam, who have worked in close conjunction with Landia and professional services firm WSP to bring about the most effective low-flow design, Landia’s chopper pumps and mixers are in operation from 11pm until 6am, removing sewage from the cistern that serves the third to seventh floors.
Eric C. Pettit, P.Eng, Project Manager for WSP, provided consulting services through for the project.
“To meet the strict low-flow rate of just 2.2 litres per second that was required for the overnight time slot, we’ve had to throttle the Landia pumps down substantially with a Variable Frequency Drive (VFD) as part of this complex installation. We start the pumps at 100% speed, and then ramp them down to the restrictive flow rate. We then ramp them back up to 100% just before shut-off to ensure that the pump is clear”.
He added: “We are also using an additional Landia chopper pump as a mixer. Initially a standard propeller mixer was used, but it was constantly fouling and tripping on overload due to high concentrations of sanitary products that were causing a floating matt problem. It was also causing foaming, which worsened the unwanted surface matt build-up. We use the additional Landia unit to pump up and into a manifold so as to create a spray action along the floor of the basin, moving any settled material to the pump suction area. This also pre-chops the materials, effectively eliminating the chances of jamming when we are running the VFD-controlled pumps to discharge”.
Earl Masse for Engineered Pump Systems added: “This has been an unusual, challenging yet very rewarding project. The Landia chopper pumps have conclusively proved their non-blocking capability and their ultra-reliability. The specification of a good pumping system to the successful operation of this new building has been crucial”.
www.landiainc.com
+1 (919) 466 0603
Landia Ltd
- 0194 8661 200
- info@landia.co.uk
- http://www.landia.co.uk
- Waymills Industrial Estate, Whitchurch, Shropshire, SY13 1TT GB
About us
Landia's headquarters are located in Lem, which is how it has been since 1933. Today, Landia has subsidiaries in England, Germany, Norway and the US, and a sales office in China. In addition, Landia products are sold in 45 countries worldwide. Landia supplies pumping and mixing solutions to many different industries, with the most important ones being agriculture, wastewater, biogas plants and the fish industry. In general, you will find Landia's products wherever there is a difficult medium to be pumped or mixed. Landia survives by selling quality solutions in close partnership with the customers.
Landia is not a supermarket where customers select products from the shelves. Our technical sales people are always in close discussions with customers, which ensures solutions that work. For Landia, quality in every phase a matter of course, and we have been ISO9001 certified since 1994. Quality also means that many of Landia's products have been in operation for 20-25 years even though the operating conditions may be extreme. In that way, Landia's customers achieve the lowest lifespan costs, while resource consumption is minimised, which further results in a positive impact on the environment.
Where we supply to
Europe, Africa, Asia, Australia, South America, North America
Industries we supply to
Chemicals
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Landia GasMix operating in tank
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LANDIA's EradiGator - Heavy Duty Chopper Pump Mixes & Chops To Clean Your Wet Well
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POPL Tarm WWTP
