THE STATUS QUO AND MEASURES TO TREAT SPENT MUSHROOM WASTE IN DANANG CITY

Abstract

This study was conducted to evaluate the status quo of collection, treatment of spent mushroom waste and to propose measures to treat spent mushroom waste in Da Nang city. By June 2015, there have been 18 mushroom farms in Danang city with their capacity of more than 16 tons of input materials per year and the total amount of input materials have reached 925.6 tones. The amount of spent mushroom waste from these farms is 477.3 tons per year, of which the spent waste of oyster mushroom is the highest (65.5%), followed by that of straw mushroom (26.4%), of lingzhi mushroom (7.4%) and of wood ear mushroom (0.7%). Results from analysis and experimental cultivation of fertilizer decomposed from spent mushroom waste show that the compost heap method, which has many advantages, is suitable for treatment of spent mushroom waste from these farms in Da Nang city.