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The Harmony process transforms organic waste streams into premium quality, organic based fertilisers for use in agriculture, horticulture, golf courses and land remediation. Bio-Recycle currently owns the license for the Harmony process within Australia, New Zealand, Indonesia and Malaysia.

Harmony fertilisers are known as ‘bridge’ products, as they combine organic matter with concentrated inorganic nutrients to produce higher analysis, slow-release fertilisers. This process ‘bridges the gap’ between relatively insoluble, low analysis organic fertilisers and water-soluble, high analysis ones. By combining these benefits, the Harmony process is able to satisfy the increasing need for environmentally friendly, high-performing fertilisers.

Within the first step of the Harmony process, the organic waste stream (such as chicken manure or biosolids) is mixed with dry, granular chemical fertilisers. This mixture is then conveyed to the proprietary Reactor, where small quantities of mineral acids are added to the mix. The addition of the reagent initiates a chemical reaction within the admixture, whereby the nitrogen is converted into Water Insoluble Nitrogen (WIN) molecules of varying length polymer chains. Following the Reactor stage, the mixture is dried, cooled and graded into homogeneous granules.


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Within the soil, these polymer chains release nitrogen at different rates, depending on the length of the chain. The longer the chain, the more slowly the nitrogen is released. Hence the Harmony ‘bridge’ products are able to release nitrogen to the plant in a controlled manner over a longer period. For each particular market, the time taken for the nitrogen within the granule to completely become available may be altered. In this way, controlled-release, organic-based fertilisers may be manufactured to suit the many varying market requirements.

The granular fertiliser product of the Harmony process has many other advantages. The product has a salt index much lower than many chemical fertilisers, thereby greatly reducing the effects of ‘chemical burn’. The fertiliser granule is of a consistent size and granularity, providing long lasting integrity within storage and even-flow spreading. Furthermore, the granules are generally dust-free, and free of pathogens and unpleasant odours. The Harmony technology can also incorporate some of the organic waste stream as fuel, to dry down the granular product.

The Harmony process also has many benefits for the soil and environment. The organic component of the ‘bridge’ product contributes to increased soil microbial activity and also provides valuable micronutrients.

Over time, organic-based fertilisers will help rebuild the microbial quality or ‘life’ of the soil. Soils with fewer chemical fertilisers will not acidify or leach nutrients into groundwater as quickly, and as more nutrients from organic and organic-based fertilisers remain within the root zone, they are more efficient in delivering a plant’s individual requirements.

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