Concept and application of anaerobic suspended granular sludge bed （SGSB） reactor for wastewater treatment

床扩大在 upflow 的设计和操作服务重要功能厌氧的反应堆。扩展小粒的污泥床(EGSB ) 的流动模式的分析大多数 EGSB 反应堆不表现作为的反应堆表演扩展了床反应堆，，广泛地被察觉。更确切地说，这些反应堆基于经典化学反应堆理论作为使流体化的床反应堆表现。在这份报纸，四个床扩大模式，划分的同样静态的床，扩展的床，推迟的床，和使流体化的床，为生物反应器被建议。一个高率的厌氧的推迟的小粒的污泥床(SGSB ) 反应堆然后被开发。SGSB 反应堆是 upflow 厌氧的反应堆，和它的扩大度能容易在一个范围以内被控制由控制 upflow 维持污泥床的推迟的地位速度。照原尺寸的反应堆的结果证实 SGSB 反应堆的使用是有益的。照原尺寸的 SGSB 反应堆稳定地跑并且在高装载率完成高货到付款移动效率(大约 90%)( 一般水准 40 kg

Bed expansion serves an important function in the design and operation of an upflow anaerobic reactor. An analysis of the flow pattern of expanded granular sludge bed （EGSB） reactors shows that most EGSB reactors do not behave as expanded bed reactors, as is widely perceived. Rather, these reactors behave as fluidized bed reactors based on the classic chemical reactor theory. In this paper, four bed expansion modes, divided as static bed, expanded bed, suspended bed, and fluidized bed, for bioreactors are proposed. A high-rate anaerobic suspended granular sludge bed （SGSB） reactor was then developed. The SGSB reactor is an upflow anaerobic reactor, and its expansion degree can be easily controlled within a range to maintain the suspended status of the sludge bed by controlling upfiow velocity. The results of the full-scale reactor confirmed that the use of SGSB reactors is advantageous. The full-scale SGSB reactor runs stably and achieves high COD removal efficiency （about 90%） at high loading rates （average 40 kg-COD·m^-3·d^-1, maximum to 52 kg·COD·m^-3 ·d^-1） based on the SGSB theory, and its expansion degree is between 22% and 37%.