The installation of Grundfos pumps and related equipment as part of an international beer brewer\u2019s expansion in Gauteng highlights a common commitment to water and energy efficiency.<\/p>\n\n\n\n
A range of Grundfos submersible pumps, smart digital pumps and vertical multistage centrifugal pumps are installed at this Sedibeng-based brewery\u2019s wastewater plant and its water treatment plant. <\/p>\n\n\n\n
The installation, which is in line with the brewer\u2019s commitment to conserve water as a precious resource, included the installation of a water recovery plant, allowing the operation to further optimise water use within its facility. <\/p>\n\n\n\n
The expansion also saw the upgrading of the water treatment plant, where clean \u2018raw\u2019 water from the municipality is further purified for brewing purposes. After the beer is produced, beer residues and water used for pipe cleaning is treated to meet regulated environmental discharge limits. This can also be re-used for cleaning, reducing the need to draw on the municipal supply. <\/p>\n\n\n\n
According to Raymond Makgoga, Grundfos associate sales engineer, three Grundfos submersible wastewater pumps were provided to transfer water from the brewery to the water recovery plant. After the sedimentation process, water is pumped to the reclamation plant for final treatment. In this circuit, around 6,000 m3<\/sup> of water is pumped daily, with the pumps being driven by 15 kW high-efficiency motors with IE3 rating.<\/p>\n\n\n\n \u201cIn the water treatment plant, a number of Grundfos Smart Digital S and Smart Digital XL pumps are installed, mounted on dosing skids,\u201d says Makgoga. \u201cThese must accommodate a range of chemicals from sodium hydroxide and sodium hypochlorite in the reverse osmosis circuit, to citric acid and anti-scalant in the ultra-filtration circuit.\u201d<\/p>\n\n\n\n Makgoga describes this function as a critical part of the brewery\u2019s operation, and comments on the value of Grundfos control systems.<\/p>\n\n\n\n \u201cThese systems give a high level of control, communicating vital data between the pump and the PLC so that chemical dosing is accurate and appropriate,\u201d he says. \u201cThis eliminates over-dosing and ensures that chemicals are not wasted; the Grundfos pumps are able to measure the volumes of water flow and then dose in proportion.\u201d<\/p>\n\n\n\n The dosing pumps were supplied with the complete package including Grundfos\u2019s CIU 500 interface. The CIU 500 is a standard interface for data transmission between an industrial ethernet network and a Grundfos pump or controller, making data exchange possible between Grundfos pumping systems and a PLC or SCADA system. <\/p>\n\n\n\n Other accessories in the package were pressure relief valves, pressure loading valves for maintaining pressure on the discharge line, and pulsation dampeners to ensure smooth dosing flow.<\/p>\n\n\n\n Energy efficiency is also an important factor, considering the significant energy consumed by wastewater treatment plants. Some 28% of the Sedibeng facility\u2019s energy is consumed by utilities, which are therefore the first port of call for energy saving efforts. <\/p>\n\n\n\n Large pumps in the system transfer about 1,750 m3<\/sup> of water per hour around the brewery, for instance, pumping 24 hours a day. To monitor and conserve energy, he says the company uses a Utilities Benchmark Model (UBM) which compares the electricity used with the kilograms of water treated and chemical oxygen demand (COD). <\/p>\n\n\n\n The use of IE3 energy efficient motors in the Grundfos pump installations has assisted in reducing energy consumption to about 1,3 kW per kilogram COD treated, from a level of over 1,9 previously. These statistics are tracked daily, and the new equipment helps to facilitate this data tracking as the operation works towards even more demanding energy saving targets.<\/p>\n\n\n\n According to Nancy Khumalo, service sales at Grundfos, energy savings can be modelled in advance to indicate how Grundfos pump installations can improve energy consumption.<\/p>\n\n\n\n \u201cThis allows our customers to consider how the Grundfos pumps could contribute to reducing their carbon footprint and their actual electricity costs,\u201d says Khumalo. \u201cWe are also able to provide an estimation of the capital payback period based on these savings.\u201d<\/p>\n\n\n\n As part of the package Grundfos provided training and support to operator-level employees at the brewery. This allowed the plant staff to \u2018take ownership\u2019 of the equipment and understand more about its functioning. <\/p>\n\n\n\n \u201cGrundfos has been proactive in embracing our sustainability vision, and is now guided by our Grundfos Strategy 2025,\u201d he says. \u201cFocusing on people and water, we share the same passion as our customers to impact positively on our global future through high-value, technology-driven solutions.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":" The installation of Grundfos pumps and related equipment as part of an international beer brewer\u2019s expansion in Gauteng highlights a common commitment to water and energy efficiency. A range of Grundfos submersible pumps, smart digital pumps and vertical multistage centrifugal pumps are installed at this Sedibeng-based brewery\u2019s wastewater plant and its water treatment plant. The … Continue reading GRUNDFOS WORKS WITH INTERNATIONAL BREWER FOR SUSTAINABLE EFFICIENCY<\/span> Accurate dosing<\/h1>\n\n\n\n
Saving energy<\/h1>\n\n\n\n
Up-skilling<\/h1>\n\n\n\n