THE APPLICATION SOME MICROBIAL STRAINS IN PINEAPPLE WASTEWATER TREATMENT

Abstract

The canning process of pineapple fruit usually generates a huge amount of solid and liquidwaste that should be proper treated before released in to the environment. Wilstewater from theprocessing of fruit is usually high in organic components such as sugars, organic acids, celluloseand can cause serious pollution if released into the environment without proper treatment. Theability of yeast strains (HS and H7) utilizing soluble sugars and organic acids, bacterial strains (X3, X7) degrading cellulose, leads us to apply them in treatment of pineapple wastewater.The batch culture of the above microorganisms for reducing COD of pineapple wastewaterwas carried out. A volume of 200 ml unsteriled pineapple wastewater with initial pH 4,2 and COD 1534 mg/litter, were inoculated with the yeast strains and bacterial strains, with shaking220 rpm/min within 72 h, the experiment addition inoculated microbial strains could removed 94% of COD from wastewater, meanwhile the experiment without inoculated microbial strainsremoved only 37% of COD.