低温和常温状态下AHR反应器处理生活污水效果比较研究
Comparative study on effect of sewage treatment at low and room temperatures
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摘要: 厌氧处理的传统对象为城市污水厂污泥和高浓度的工业污水。生活污水属于低浓度污水，追寻高效的生活污水厌氧处理工艺是研究者的一致目标，也是厌氧处理研究的热点。研究了在低温和常温状态下长期运行复合式厌氧反应器（AHR）反应器对生活污水的处理效果并分析了其中的影响因素，结果表明，进水平均温度分别为27.9℃和10.6℃情况下，COD处理效果接近，平均去除率分别为30.68%和36.13%；常温工况B/C从进水0.525增加到出水的0.642，低温工况从0.459增加到0.503，常温相比低温可生化提高的幅度稍高；低温下不利于SS的去除效果的提高，常温工况比低温工况的污泥水解率高。Abstract: The traditional targets of anaerobic treatment are the sludge from urban sewage treatment plants and high concentration industrial effluent.The urban sewage is low concentration effluent.To trace efficient anaerobic sewage treatment processes is a consistent goal of researchers and a hot spot in the study of anaerobic treatment.The effects of the combined anaerobic reactor(AHR) for treating sewage at room and low temperatures were studied and the influencing factors were analyzed.The results show that when the average influent temperatures were 27.9℃ and 10.6℃,the COD treatment effect was similar,the average removal rates were 30.68% and 3613%.At room temperature,the B/C was increased from 0.525 in influent to 0.642 in effluent,and at low temperature,it was increased from 0.459 to 0.503.The biodegradability at room temperature was higher than that at low temperature.The low temperature was unfavorable to SS removal by AHR.The hydrolysis rate of sludge at room temperature was higher than that at low temperature.
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Key words:
- AHR reactor /
- low temperature /
- room temperature /
- sewage
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