地下渗滤系统处理生活污水中浓度去除率与系统去除率对比研究

通过在试验场建立地下渗滤系统装置,系统在运行达到熟化后,应用其处理生活污水,水力负荷为1.8 cm/d。结果表明,地下渗滤系统对COD、氨氮、总氮的平均浓度去除率分别为87.9%、98.3%、42.9%,平均系统去除率分别为92.3%、98.9%、62.9%。其中,出水COD、氨氮、总氮的平均浓度分别为16.8、0.41、32.78 mg/L。各指标系统去除率都大于浓度去除率,说明系统去除率比浓度去除率更能精确表示地下渗滤系统处理生活污水的能力,尤其是对总氮的去除率更高。

大孔吸附树脂处理模拟苯甲酸废水的研究

目的选择合适的树脂并选择最佳的工艺条件处理模拟苯甲酸废水．方法用大孔吸附树脂对模拟苯甲酸废水进行处理，通过静态吸附和动态吸附相结合的方法得出H-103大孔吸附树脂处理苯甲酸废水的最适合的工艺条件．结果在苯甲酸浓度3000mg／L、温度室温18℃～20℃时，最佳吸附条件是动态吸附流速7BV／h；最佳洗脱条件乙醇用量为80mL．静态吸附后，苯甲酸的浓度去除率为78．7％，动态吸附后浓度去除率为99．98％，树脂的反复使用性能良好．结论用H-103大孔吸附树脂处理苯甲酸废水效果良好．

人工湿地中不同植物对生活污水的净化研究

本文阐述了不同植物在潜流人工湿地处理生活污水的研究中对不同污染物的净化效果,经分析表明:第2个单元潜流湿地中菖蒲对TP及浊度的净化效果较好,去除率达到了60%和70%;第4、第5单元美人蕉和芦苇对于NO3--N的去除率达到12.2%和11.9%;第5单元芦苇对TN的净化效果较好,去除率达到15%;而5个单元对于CODmn的净化效率相当,第2单元对各指标都有较高的去除率。另外,该潜流人工湿地对滏阳河水总体净化效果较好,TP、TN、NO3--N、CODmn、以及浊度的出水质量浓度分别为0.01 mg/L、3.1 mg/L、3.5 mg/L、2.7 mg/L和0.085度。按照GB3838-2002,出水水质除TN低于Ⅴ类水标准外,其余指标均达到Ⅱ类水标准。

Study on Emulsifier Wastewater Treatment through UASB+SBR Technology

[Objective] The aim was to study the COD removal effect of emulsifier wastewater and provide experimental basis for the design, adjustment and operation of project. [Method] Using UASB+SBR technology to process emulsifier wastewater, the problems in operation process were discussed. [Result] The experiment carried out for 71 d, under the situation of large changes of COD concentration (the highest: 10 924 mg/L, the lowest: 2 880 mg/L, mean value: 5 751 mg/L), COD removal efficiency of UASB was around 70% and the COD removal efficiency of SBR was above 70%, which met the emission standard. [Conclusion] The combined technology had good treatment effect on the emulsifier wastewater.

Modified two-phase anaerobic baffled process for low-concentration wastewater treatment

In this study low-concentration wastewater was investigated in the integral two-phase anaerobic baffled reactor by determining the removal of COD at various HRT,reflex ratios,and temperatures. Results indicate that the removal efficiency of COD is more than 90% at 25 ℃ and 10-h HRT with no wastewater recycled,and the removal efficiency is up to 88% at 8-h HRT and reflex ratio of 150%. The removal efficiency is decreased with the decreasing temperature and HRT. The removal efficiency of COD is approximately 60% at 10 ℃,which proves that the temperature does not affect it apparently. This research has significance for reducing the cost of wastewater and sludge treatment in cold area.