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AD Plant Smell
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<blockquote data-quote="thesilentone" data-source="post: 3659688" data-attributes="member: 6194"><p>You make a very good point, this material is called 'wash through' and represents max 1.5% of the total volume.</p><p>However the system is designed to deal with this, as well as the primary tank where most of the digestion takes place (over 90%) the material then enters a secondary digester where any remaining VS is degraded before entering the final storage tank/lagoon.</p><p></p><p>In the case of food-waste plants, the process can also perform waste recovery (waste in a the front end - product out at the back end). To achieve this, the process plant must comply with QSI PAS110 see: <a href="http://www.wrap.org.uk/content/bsi-pas-110-producing-quality-anaerobic-digestate" target="_blank">http://www.wrap.org.uk/content/bsi-pas-110-producing-quality-anaerobic-digestate</a></p><p></p><p>This standard sets a number of limits, one of which being the RBP (residual biogas potential). This is the amount of VS left un-degraded by the process. This low limit is tough to achieve, however it ensures an efficient digestion process and quality end product.</p></blockquote><p></p>
[QUOTE="thesilentone, post: 3659688, member: 6194"] You make a very good point, this material is called 'wash through' and represents max 1.5% of the total volume. However the system is designed to deal with this, as well as the primary tank where most of the digestion takes place (over 90%) the material then enters a secondary digester where any remaining VS is degraded before entering the final storage tank/lagoon. In the case of food-waste plants, the process can also perform waste recovery (waste in a the front end - product out at the back end). To achieve this, the process plant must comply with QSI PAS110 see: [URL]http://www.wrap.org.uk/content/bsi-pas-110-producing-quality-anaerobic-digestate[/URL] This standard sets a number of limits, one of which being the RBP (residual biogas potential). This is the amount of VS left un-degraded by the process. This low limit is tough to achieve, however it ensures an efficient digestion process and quality end product. [/QUOTE]
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