皂脚酸化废水的批式厌氧消化处理效果及最佳进料负荷研究  

Investigation of the system performance and optimal organic loading for batch anaerobic digestions of soapstock wastewater

作　　者：王凤娇[1] 徐银鸿 李秀金[1] 刘研萍[1] 袁海荣[1] 邹德勋[1] 朱保宁[1] 

机构地区：[1]北京化工大学化学工程学院北京市环境污染控制与资源化工程研究中心,北京100029

出　　处：《北京化工大学学报（自然科学版）》2016年第6期63-70,共8页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：北京化工大学本科教育教学改革专项研究项目(B201401);北京化工大学大学生创新创业训练计划项目(ZD2016024)

摘　　要：通过批式实验对皂脚酸化废水的厌氧消化处理效果和最佳进料负荷进行了研究。结果表明:皂脚酸化废水的厌氧产甲烷潜力为457 m L/g;当反应周期为20 d时,进料负荷(OLR)分别为5、7.5、10、12.5 g/L(以COD计)的4组皂脚酸化废水批式厌氧消化产气系统,其单位COD累积甲烷产量分别为457、423、433、333 m L/g,产气中的甲烷含量最高分别为74%、72%、73%、72%,化学需氧量(COD)的去除率分别为73.1%、72.2%、71.8%、67.4%,总磷(TP)的去除率分别为76%、65%、59%和56%。通过本研究得出:厌氧消化对皂脚酸化废水中的COD、TP等污染指标有较好的去除作用,且可以实现生物能源的回收利用;在高负荷12.5 g/L下厌氧消化效果出现减退,故建议放大化进料负荷r≤10 g/L。Various batch experiments have been conducted to determine the anaerobic biomethane potential and optimal organic loading for soapstock wastewater digestion. The results showed that after a sufficient batch digestion for 20 days, the biomethane potential of soapstock wastewater was 457 mL/g. 90% of the total biomethane produc- tion was achieved in 5 days. At various organic loading rates of 5, 7.5, 10 and 12.5 g/L, the following results were obtained ： the cumulative biomethane yield was 457,423,433 and 333 mL/g, respectively; the highest meth- ane content was 74% , 72% , 73% and 72% , respectively. COD removal was 73.1% , 72.2% , 71.8% and 67.4% , respectively; total phosphorus removal was 76% , 65% , 59% and 56% , respectively. These results showed that anaerobic digestion technology can be used as the first step in soapstock wastewater treatment, but the highest initial organic loading rate should not exceed 10 g/L.

关 键 词：皂脚酸化废水 厌氧消化 产甲烷性能 进料负荷(OLR) 

分 类 号：X7[环境科学与工程—环境工程]