After an ethanol plant initiated some significant process changes, they encountered a final product sulfate issue that they had not faced before. Although the process changes provided excellent yields and the related economics were sound – meeting the final product quality specifications for sulfate became a problem. Blending provided a degree of relief, but created logistical challenges. The customer looked to [...]
With the State of California initiative to reduce water usage by 20% by the year 2020, many plants are focusing their responsibility to become a more environmentally friendly facility. One such facility included a large California hospital seeking to reduce the water treatment costs for their HVAC system. The hospital has three (3) individual cooling tower systems that service three (3) centrifugal chillers which [...]
U.S. Water’s Ethanol Process Technologies (EPT) team engaged in a CO2 Scrubber performance comparison evaluation in an Eastern United States dry grind fuel ethanol plant with a 100 MMgpy nameplate. Parameters compared were: Compliance Reliability Application Cost Residual Bisulfite – and its impact on both yeast vitality and final product sulfur content Accompanying Value The EPT [...]
republished with permission from Ethanol Today , December 2010 In the agribusiness sector where acronyms abound, some corn producers and ethanol plant investors are learning yet another one: ZLD It stands for “zero liquid discharge,” and it could be an important future trend for the ethanol industry as plants weigh the possible benefits of treating and re-using water that has already been [...]