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首页> 外文会议>International Water Association(IWA) Conference; 20050518-20; Xi'an(CN) >Studies on the use of anaerobic baffled reactor for the continuous anaerobic digestion of LAS wastewater
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Studies on the use of anaerobic baffled reactor for the continuous anaerobic digestion of LAS wastewater

机译：厌氧折流板反应器连续厌氧消化LAS废水的研究

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Biodegradation of linear alky benzene sulphonate (LAS) was investigated in this study. From anaerobic batch experiment investigations, a relationship between the biological utilization of glucose as co-substrate for the reduction of LAS under anaerobic conditions was proposed using an anaerobic baffled reactor (ABR) The anaerobic batch experiment on LAS showed that the gas production which the substrate contained sodium acetate and glucose obviously larger than the gas production which the substrates only contained LAS, and the effecting of glucose was prior to the effecting of sodium acetate. In continuous experiment, therefore, the glucose should be regard as the co-substrate. The volumetric LAS loading rate was 0.025kgLAS/ (m3.d), and the sludge loading rate was 0.006gLAS/(gVSS.d). The ABR was seed digested sewage sludge to operate for 1 years to assess reactor performance during start-up ,then operated for 6 months with a feed contained LAS .Influent LAS to the reactor was 1000mg/L,72h of HRT , and the glucose was regard as co-substrate , operated 60 days , the removal efficiency of COD could stable at 70%, when the concentration of LAS increased to 1250 mg/L,55h of HRT, the removal efficiency of COD still maintain at 70%. These parameters showed that the treatment of LAS had a good property which could be endured shock loading rate. In this experiment, it was important to control the pH values, especially in the first compartment. The reason that when pH values had been decreased in the first compartment, the concentration of sulfate was also decreased which led to the increasing of the concentration of dissociative of H_2S, and the activity of methanogenic bacteria was also inhibited which led to the increasing of concentration of COD in the first compartment, this result in the total removal efficiency of COD had been decreased.
机译：在这项研究中研究了线性烷基苯磺酸盐（LAS）的生物降解。通过厌氧分批实验研究，提出了利用厌氧折流板反应器（ABR）在厌氧条件下生物利用葡萄糖作为共底物还原LAS的关系。LAS厌氧分批实验表明产生底物的气体所含的乙酸钠和葡萄糖明显大于仅包含LAS的底物的产气量，并且葡萄糖的影响要先于乙酸钠。因此，在连续实验中，应将葡萄糖视为共底物。 LAS的体积加载率为0.025kgLAS /（m3.d），污泥的加载率为0.006gLAS /（gVSS.d）。 ABR是一种种子消化的污水污泥，运行1年以评估启动期间反应器的性能，然后使用含LAS的进料运行6个月。流入反应器的LAS为1000mg / L，HRT为72h，葡萄糖为以共底物为例，操作60天，COD去除率稳定在70％，当LAS浓度增加到1250 mg / L，HRT 55h时，COD去除率仍保持在70％。这些参数表明LAS的治疗具有良好的性能，可以承受冲击负荷率。在该实验中，控制pH值非常重要，尤其是在第一个隔室中。当第一室的pH值降低时，硫酸盐的浓度也降低，这导致H_2S的离解物浓度增加，而产甲烷菌的活性也受到抑制，导致浓度升高。在第一个隔室中去除COD的结果是，COD的总去除效率降低了。

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