厌氧条件下序批式间歇反应系统与完全混合反应系统对氢分压的影响

研究了在厌氧条件下以葡萄糖为基质的序批式间歇反应系统(ASBR)与完全混合反应系统(CSTR)中氢分压的变化.结果表明,在完全混合反应系统中,微生物中糖原含量保持在142.52mg.g-1(以VSS计),氢分压稳定在291.3Pa,最大氢利用速率为0.703g.g-.1d-1.在序批间歇反应系统中,当进水结束时,50.17%的葡萄糖转化为糖原储存在细胞体内,氢分压达到最大为14.3Pa;当反应结束时,微生物细胞中储存的糖原被完全代谢,氢分压降至最低,为3.5Pa,反应器中污泥最大氢利用速率为1.719g.g-.1d-1.序批式反应器氢利用速率较大及糖原储存的存在,降低了系统的氢分压,保证了厌氧系统的高效、稳定的运行.

Effects of sequencing batch and continuous reactor on the hydrogen partial pressure in the anaerobic system

The change of the hydrogen partial pressure was investigated in anaerobic sequencing batch reactor (ASBR) and continuous stirred tank reactor (CSTR) using glucose as substrate under the anaerobic condition. The results indicated that the content of glycogen kept in 142.52 mg·g^-1, the hydrogen partial pressure was stabilized in 291.3 Pa and the maximum rate of hydrogen utilization (HUR) was 0.703 g·g^-1·d^-1 in CSTR. 50.17% glucose transformed to glycogen in cell bodies, and the hydrogen partial pressure reached to the maximum (14.3 Pa) after the influent in ASBR. In the end of the reaction, the glycogen in microorganism was metabolized completely, the hydrogen partial pressure was the lowest (3.5 Pa), and the maximum HUR in sludge was 1.719 g·g^-1·d^-1. The decrease of hydrogen partial pressure ensured the anaerobic system operated efficiently and steadily in batch reactors due to the higher hydrogen utilization rate and the presence of glycogen.