Recycling Product News Logo

In-vessel system is low-cost, clean, efficient

The X-ACT In-vessel Composting System is designed as a lower cost, cleaner, and more energy efficient way of managing waste. The X-ACT system does not pollute the air or ground water, and produces no leachate or run-off that could pollute underground water tables. The composting drum on these units is turned by a surprisingly low horsepower electric motor. For example; a 10-foot diameter by 32-foot long drum, rotating 30 tons of manure, 10 times per hour, will do so using a 7.5 hp motor. Or, a bigger 10-foot diameter by 72-foot long drum uses only a 10 hp motor – turning 60 tons, 10 times per hour. Compared to the energy requirements of a windrow turner doing exactly the same number of turns, these systems require a much lower amount, contribute positively to surrounding soil and vegetation, and there are far less toxic emissions, according to the manufacturer. Additionally, because these systems offer virtually complete aerobic biodegredation, are fully enclosed and feature negative exhaust and a biofiltersystem, there is no odour To accomplish total aerobic compost-ing, the X-ACT system uses a rotating (or tumbling) enclosed, vessel designed to create the ideal environment for the aerobic bacteria to thrive. If these vessels are housed in a building (which is not necessary because of the insulation encapsulating the vessel) any VOC’s or odours from the building are actually sucked into the vessel, thus cleaning the air in the building itself.

The X-ACT rotating drum eliminates all the guesswork, eliminates the weather factor, and therefore composts exactly the same level of compost every time. Temperatures in the vessel are easily maintained within ideal ranges (around 140 degrees F or 55 degrees C) for the required 72 hours for pathogen kill, as per EPA regulations. Additionally, the X-ACT rotating drum was designed specifically to overcome the problem of stress fractures, common with many traditional in-vessel systems. The vessel is constructed in eight-foot modules, which are then coupled and bolted together, and the X-ACT system uses a centre drive with a low horsepower industrial eurodrive, meaning easy starting and even turning. The vessel is also supported by huge steel wheels and bearing assemblies spaced every 16 feet for even weight distribution.