Environmental, Health and Safety

Next Generation Organic Waste Digester for Food and Drink Sector

05 December 2017

Advetec, a specialist in the treatment and reduction of solid and liquid organic waste, has launched the Advetec XO, an evolution of the company’s successful Bio-Thermic Digester (BTD) technology. The system is designed to rapidly reduce organic content within waste at the source, reducing off-site transportation and processing costs for food processors and helping companies achieve zero waste to landfill.

The small footprint, fully-contained on-site solution delivers a 60 percent to 90 percent reduction in mass from mixed Source: AdvetecSource: Advetecorganic waste streams, with typical OPEX cost savings of 10 percent to 15 percent from day one.

The completely re-engineered system features improvements to both the mechanical integrity of the machine and internal processes, as well as the control software and remote monitoring systems. These ensure a more rugged and versatile machine, which is easier to optimize for individual customer requirements and changing waste stream composition at different production times.

The units incorporate a new exoskeleton to aid lifting and transportation, upgraded drive units with increased torque and changes to optimize the internal processes which move and mix waste as it passes through the machine. These improve performance capabilities with different waste streams, with overall efficiency gains of 10 percent over previous models.

Cycle times for waste digestion as material passes through the machine are now between 24 and 72 hours depending on density and composition of the waste. The Advetec XO is the only on-site solution which can handle non-organic waste contained within the organics, eliminating the need to sort or treat waste prior to processing.

The only infrastructure requirements are a power supply and a flat concrete base. In most cases operators can simply swap out existing skips or compactors and replace them with the new machine. No additional space is required and existing automated or manual material handling systems, previously used to load skips and compactors, can be adopted.

A new software and sensor package with cloud-based data monitoring provides improved control capabilities to benefit performance and ensure the Advetec XO is operating at its peak capability. Status alerts covering key parameters enable engineers to predict issues early and make changes remotely.

The Advetec XO process uses a bespoke blend of thermophilic bacteria and nutrients to digest the organic content in waste via an exothermic reaction. This generates heat which sustains the high temperature environment required for the thermophilic bacteria, and ensures low energy cost. Waste is digested as it moves through the Advetec XO, producing water vapor that can be condensed or vented to the atmosphere. The remaining output material is dry with a potentially high calorific value. It may be suitable for use as refuse-derived fuel or as a soil improver.

The Advetec XO is initially available in three unit sizes to handle different daily waste volumes from one to 13 cubic meters, and is scalable when machines are operated in parallel. This makes the solution equally attractive to the organic waste sector, food manufacturers of all sizes, hotels and restaurants, municipal waste handlers and water utilities.

Machines are delivered pre-assembled and factory tested under simulated loadings following an analysis of the customer’s waste stream.

To contact the author of this article, email sue.himmelstein@ieeeglobalspec.com

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