การพัฒนาระบบบำบัดน้ำเสียที่มีความเค็มและไนโตรเจนสูง จากกิจกรรมสะพานปลาแบบกระบวนการยูเอเอสบีที่มีการเติมแบคทีเรียคัดสายพันธุ์

Abstract

This research aims to develop a UASB treatment system with selected microorganism for fish pier wastewater containing high  oil&grease and  nitrogen, together with high gas production potential. Raw wastewater used in this study was from fish pier, Samutsakorn.  At steady state condition, the UASB with selected microorganism could remove COD up to 77.6 and 88.0 % at upflow velocities of  1 and 3 m/hrs, respectively.  This performance was prior to the UASB system without selected microorganisms, which could reduce COD  only 66.8% at upflow velocity at 1 m/hr. Moreover, the structure of  granular sludge inside the UASB reactor with selected microorganisms were round shape and  more dense in  microbial community than in the case of  UASB reactor without selected microorganisms.  Therefore, the  developed system could be promising for  high saline fish-pier wastewater treatment.