Intermittent high pressure sequential bioreactor(IHPSB) with integration of sand filtration system For synthetic wastewater treatment.

• Main Authors: Tai-Wei Tzeng, 曾枱瑋
• Other Authors: Chi-Wang Li
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/32758763092188351460

碩士 === 淡江大學 === 水資源及環境工程學系碩士班 === 96 === In order to obtain high dissolved oxygen (DO) level, a laboratory scale high pressure (3 kg/cm2) bioreactor with a layer of sand in the bottom acting as filter was developed. High DO can support elevated activated sludge growth which in terms can sustain high COD loading. Integration of sand layer inside the reactor can reduce SS in the treated water. During a long-term operation of the intermittent high pressure sequential bioreactor (IHPSB), the results show that the sand filtration effectively reduced treated water SS (< 150 mg/L) when MLSS concentration was less than 18.65 g/L. DO as high as 14 to 18 mg O2/L can be obtained under high pressure aeration. The flux of IHPSB is stable around 500 LMH which is higher than that of MBR. In this study, organic loading rates ranging from 3.34 -14.32 kg COD/m3-day were tested and the removal efficiency of TOC on average was about 90%.