摘要:
为开展高效厌氧生物技术处理家禽粪便的应用研究，试验依据固定床厌氧反应器(anaerobic pecked bed reactor)的特点，设计了一个有效容积为20 L的高效厌氧反应器，以猪粪尿为发酵原料，进水COD浓度范围在4 820～54 000 mg/L，实验过程为55 d。按进料的水力停留时间可将实验划分为2个阶段：前期（44 d）和后期（11 d），前期通过提高进料浓度直接提高反应器处理浓度,水力停留时间保持为2 d，每7～8 d为一个周期；后期通过缩短水力停留时间间接提高反应器处理浓度,进料浓度保持不变，每2～3 d为一个周期。通过对厌氧处理系统运行过程中COD、pH、挥发性成分、TN、TP和NH3-N含量的测定，分析了该系统运行特点。结果表明：在发酵的第1～55 d，整个厌氧处理系统能够稳定运行，COD去除率稳定在67%～88%之间；对TN、TP、NH3-N都有很好的去除能力。
Abstract:
In order to research on a highly-effective disposal of poultry manure through anaerobic biotechnology, an efficient anaerobic reactor with an effective volume of 20 L was designed according to the characteristics of anaerobic pecked bed reactor. Pen manure as raw material for fermentation, the raw water COD was adjusted between 4 820 and 54 000 mg/L.The whole process was 55 days, which was divided into two stages according to the raw of hydraulic retention time: the prophase (44 d) and the anaphase (11 d),in the prophase the dealing concentration of reactor was directly advanced by increasing the raw water concentration, the hydraulic remain time (HRT) was maintained 2 days, 7～8 days per cycle. In the anaphase, the dealing concentration of reactor was indirectly advanced by shortening the residence time, and the influent concentration was unchanged, 2～3 days per cycle. COD, pH, volatile components and the content of TN，TP and NH3-N were determined through to the whole procession in the anaerobic treatment system, and analysis of operating characteristics of the system.Results demonstrated that in the fermentation section 1～55 d, the whole system could be stably operated, with a stable COD removal efficiency which were between 67% and 88%; and high capacity in removing TN,TP and NH3-N.
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