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A digester gas-fueled Capstone CR65 microturbine provides power to Swineline Farm in South Africa. “In swine farms in South Africa today the normal process for addressing waste and waste management is the use of open anaerobic lagoons that emit significant amounts of methane-rich biogas heavily laden in hydrogen sulfides,” explained Matthew Hayden, CEO of Acrona South Africa LTD, Capstone’s South African distributor. “The installation and operation of an anaerobic waste treatment plant at a farm like Swineline reduces odor to the surrounding communities by as much as 80 percent,” he added. In addition to the foul smell, methane biogas is harmful to the environment since it has a greenhouse gas impact on the atmosphere 21 times that of carbon dioxide. The swine industry widely uses flushing systems to keep piggeries clean. Each standard pig creates an average of 2.5 to 3 kilograms (6 to 7 pounds) of animal waste each day. With 1,000 pigs at Jenkinson’s farm, pig waste management was a round-the-clock-task. “The piggery is built on a flush toilet system,” Jenkinson explained. The pigs stand on gridded floors that collect the waste. “We flush that out with a volume of water that will then enter into the bioreactor via the channels.” The nearby bioreactor – or anaerobic digester – is a covered lagoon near the piggery. “ The cost of ownership to the farmer for the operation of the Capstone solution is best in market.” — Matthew Hayden, CEO Acrona South Africa LTD He continued, “In the bioreactor, with a microbiology process, the waste will be converted into biogas. We have a blower extracting the gas from the reactor into the gas treatment plant. The gas treatment plant basically prepares the gas as a fuel for the microturbine by taking out the condensate and also compressing the gas to a pressure that is acceptable for the turbine to operate.” “All the power we generate gets fed back into the piggery,” he added. The Capstone microturbine provides Swineline an environmentally sound, economical source of electricity to heat the facility, pump water, and run the ventilation system. As one of South Africa’s only 300 commercial pig farms, Swineline continues to be recognized as an industry leader thanks in part to the numerous benefits of the clean-and- green Capstone microturbine installation. In addition to a dramatic reduction in odor and greenhouse gas emissions, and development of a new power source, the single-unit installation has cut the farm’s use of utility electricity by about a third. “Installation of this turbine has reduced my electricity usage by a good 30 to 35 percent,” Jenkinson said. “The farm is a very small farm when you are looking at effluent production. We have only got one turbine installed but by getting the process more effective it could get to the point that I can reduce my electricity usage by even more.” “By offering these solutions we are offering the South African farmer a sustainable, appropriate technology for introducing reliable, renewable energy solutions,” Hayden added. “The cost of ownership to the farmer for the operation of the Capstone solution is best in market. This makes the solution financially viable.” 21211 Nordhoff Street • Chatsworth • CA • 91311 • 866.422.7786 • 818.734.5300 • www.capstoneturbine.com ©2014 Capstone Turbine Corporation. P0314 Case Study CAP427PDF Image | Agricultural Swineline Farm
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