Convert yards of dirt to cubic feet by multiplying the number of yards by 27 (one yard equals 27 cubic feet).onvert cubic feet to pounds by multiplying by the bulk density of topsoil, and then converting from cubic feet to tons. This is 83 pounds per cubic foot by 108 cubic feet, for a mass of 8,964 pounds.
Thermal hydrolysis is a two-stage process combining high-pressure boiling of waste or sludge followed by a rapid decompression.This combined action sterilizes the sludge and makes it more biodegradable, which improves digestion performance.he city of Oslo, Norway installed a system for converting domestic food waste to fuel in 2012. A thermal hydrolysis system produces biogas from the food waste, which provides fuel for the city bus system and is also used for agricultural fertilizer.
A water firm is installing industrial-scale pressure cookers to enhance its vast poo power programme. Thermal hydrolysis process (THP) plants are effectively pressure-cookers that condition sludge, the leftover solids from wastewater treatment, by heating it up to around 160 degrees Celsius.hames Water will be installing the new THP plants at Beckton and Riverside sewage works in Essex, Crossness in Thamesmead, Longreach in Barking, Oxford and Crawley sewage works by 2015.