Given the great variety of macromolecules that are part of the recalcitrant COD of an industrial wastewater stream, it is very often necessary to conduct a pilot test on the field to determine which Nyex solution to adopt (Nyex-a or Nyex-e), to extimate the electrical costs associated with the chemical electro-oxidation reaction ( kWh / kgCOD removed) and the connected investment budget for the full-scale solution.
To carry out this phase, Arvia provides various solutions for pilot plants built to accomodate the customer’s needs. The simplest solution is represented by a pre-fabricated stand-alone unit built on a skid where the Nyex module is dropped into a fiberglass tank and connected to the power generator placed externally and controlled by the electrical control panel. The wastewater to be treated is sent to the plant by means of an adjustable flow pump and is percolated from top to bottom of the pre-fabricated unit where it is collected and sent to drain by gravity through appropriate drainage pipes.
Because the electro-oxidation reaction generates volatile compounds such as CO2 and O2, the system will be equipped with a top cap and both natural and forced ventilation pipes capable of extracting the gases generated and removing them from within the system.
There is also the possibility of simultaneously testing the Nyex-a and Nyex-e solutions thanks to a more complex pilot plant designed for longer field tests and able to ensure very accurate performance results. It is a plant built in an ISO naval container and equipped with two Nyex units built on skids, raw wastewater storage tanks, equalization tanks, electric generators and a control panel with programmable PLC and a remote connection system.