VaSA pilot study at a new york landfill

The Pilot Study was funded by the NSF Partnerships for Innovation Program and the New York State Foundation for Science, Technology and Innovation via NYS Center of Excellence in Healthy Water Solutions . The onsite demonstration was performed with the second Generation of  VaSA prototype succeeded at Regional Landfill, Ava, NY. The pilot-scale VaSA system was mainly composed of a vacuum stripper and a gas absorption column, which were connected through a demister and driven by a diaphragm vacuum pump. All the vessels and fittings were stainless-steel tri-clamp sanitary products. The vacuum stripper was custom fabricated and Made In America, having two flat-bottom tanks mounted vertically inside a 473-L vessel. Each tank (outer diameter of 743 mm) and the bottom head (inner diameter of 762 mm) of the large vacuum vessel had a screw plug immersion heater and Type-T thermo- couple for temperature regulation and power control. The conical demister was built with concentric reducers and spools, and loosely packed with stainless-steel scrubbing pads. The demister was designed to separate water vapor from NH3 gas by surface air cooling and reflux water droplets and condensate, targeting a temperature drop.  Water reflux relies on gravity settling of water droplets against upward vapor flow. Demister height determines vapor residence time for condensation. Water reflux rate varies with its diameter and height. The demister was installed with gasket screens and stainless-steel scrubbers to improve water reflux and minimize water vapor flux. The demister was assembled with concentric reducers to match the gradual decrease in vapor flux and temperature. The gas absorption column was built on a cylindrical sanitary spool with ball valves and secondary chambers to add sulfuric acid and discharge absorption solutions. A water/air-cooled water trap was installed before the vacuum pump to further capture the escaped water vapor by condensation. 

KAYA Fertilizers is proud to offer custom solutions we provide customers in our market be it Water Resource Recovery Facility, Wastewater Treatment Plant, Concentrated Animal Feeding Operation (CAFO) or Landfill businesses of all sizes. Our team of skilled professionals is dedicated to working with our clients to create unique products that meet their specific needs and solves their specific problems. We utilize the latest technology and industry best practices to ensure that the solution we present is of the highest quality. At KAYA FERTILIZERS, we understand the importance of delivering custom solutions that meet our clients' timelines and budgets.