运行条件对膜生物反应器处理猪场厌氧消化液效果的影响

孟海玲; 董红敏; 朱志平; 韩 磊

运行条件对膜生物反应器处理猪场厌氧消化液效果的影响

Influences of operation parameters on performance of MBR treating digested piggery wastewater

摘要

摘要: 为探讨膜生物反应器处理猪场厌氧消化液效果和合适的操作条件，该文分别选择了三种不同的水力停留时间（HRT）、间歇曝气区曝/停比和膜出水抽/停比，根据三水平正交表安排试验。结果表明：进水COD为1240～1830 mg/L，BOD5为154～420 mg/L时，出水COD（化学需氧量）为208～811 mg/L，BOD5（生化需氧量）为7～13 mg/L，COD和BOD5去除率分别达到51.7％～83.2％和93.0％～97.1％。试验所选因素中HRT对COD去除效果的影响最大，HRT=24 h与20 h、15 h时的COD去除率差异显著（P＜0.05），分别平均提高7.3％和13.4％。当水温在24～28℃时NH4+-N去除效果随水温的升高明显提高，但水温上升到28.0～35.8℃时，NH4+-N去除效果随水温变化不大。

Abstract: To optimize operation parameters of MBRs for anaerobic digested piggery wastewater, three different HRTs, intermittent aeration run/off and effluent suction run/off were adopted. Nine tests were arranged according to orthogonal table. The results showed that when influent COD was 1240～1830 mg/L and BOD5 was 154～420 mg/L, effluent COD was 208～811 mg/L and BOD5 was 7～13 mg/L, COD and BOD5 removal rates were 51.7%～83.2% and 93.0%～97.1%, respectively. HRT had a remarkable effect on COD removal during experiments. COD removal with HRT=24 h was different evidently between that with HRT=15 h or 20 h. The increments were 7.3% and 13.4% respectively. When Water temperature was 24～28℃, NH4+-N removal rate improved evidently with water temperature, but water temperature was 28～35.8℃, NH4+-N removal rate changed little with water temperature.

HTML全文

参考文献(0)

施引文献

资源附件(0)