High Rate Anaerobic

On-site pretreatment provides mutual benefit to Anheuser-Busch and the Town of Merrimack. The town of Merrimack can avoid costly upgrades to their treatment plant, and Anheuser-Busch can achieve a two-pronged energy savings advantage by idling energy-intensive brewery residuals collection units and by generating fuel-offsetting, renewable biogas for its boilers. Biothane has worked with Anheuser-Busch on eight brewery projects to date, starting with limited scopes and progressing to full turnkey responsibility. Merrimack is the most recent A-B facility to use our Biobed Technology.

Produced Water Treatment

The San Ardo project involves treatment of produced water for the purposes of discharge to recharge basins and production of Once Through Steam Generator (OTSG) make-up water. The raw produced water temperature is 200°F, and it contains about 25 ppm free oil, 80 ppm TOC, 240 ppm silica, 26 ppm boron, 240 ppm hardness and 6,500 ppm Total Dissolved Solids (TDS). The project goal was to reduce the feed water TDS to less than 510 ppm and boron to less than 0.64 ppm for recharge basins discharge, while achieving 75% water recovery across the treatment system and minimizing the volume of produced water requiring re-injection. For the purpose of OTSG make-up, the project goal was to reduce the feed water hardness to less than 2 ppm as CaCO3.