摘要
针对太湖富藻水高有机物浓度特点,研究外循环升流式厌氧污泥床(UASB)反应器处理太湖富藻水的效能和运行效果.研究表明,以城市污水处理厂活性污泥为种泥,自然腐熟5～7d左右的太湖富藻水为原水,进水COD为1 050～2 000mg/L,水力停留时间(HRT)为5d,(32±1)℃温度等条件下,可以在32d内成功启动外循环UASB反应器并达到初步稳定运行.通过降低HRT,分阶段提高COD质量浓度的方法,逐步将外循环UASB处理太湖富藻水的有机负荷提高到3kg COD/(m3.d),其COD去除率可以稳定在75%左右,产气率为0.75L/(L.d),外循环UASB对太湖富藻水具有良好的处理效果.通过电镜观测,发现稳定运行期形成颗粒污泥,且污泥内生物相丰富,分别为丝状菌、杆状菌和球状菌等多种微生物共营生长.
The efficiency and performing of external circulation up-flow anaerobic sludge blanket reac- tor （UASB） in dealing with algae-laden water from Taihu Lake was studied for the high organic matter concentration of algae-laden water. The test results showed that, using naturally decomposed algae-laden water for about 5 ～ 7 d as influent , the external circulation UASB could be completely started and re- mained stable, when the reactor ,which was inoculated sludge from municipal sewage treatment plant , was operated at HRT of 5 d,temperature of （32 ＋l） ℃. Based on declining HRT, increasing COD concentra- tion phasedly, the organic load of the algae-laden water was increased to 3 kgCOD/（m3 · d）, with a stable COD removal of 75% and a gas production rate of 0.75 L/（L · d）, indicating the stability and performance of the external circulation UASB treating the water. Observed by SEM, the granular sludge was found in the stabilization stage with coupled growing micro-organisms such as filamentous bacteria, rod-shaped bac- teria, and spherical bacteria.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第1期87-92,共6页
Journal of Hunan University:Natural Sciences
基金
国家水污染重大科技专项资助项目(2009ZX07101-011)
江苏省太湖治理科研资助项目(TH2010206)
关键词
上流式厌氧污泥床
富藻水
厌氧消化
有机负荷
up-flow anaerobic sludge blanket reactor （UASB）
algae-laden water
anaerobic digestionorganie loading rate
