水利工程施工过程中的高浓度废水污染物排放控制技术研究

Discharge Control Technology of High Concentration Wastewater Pollutants in Water Conservancy Construction Process

为了提高废水污染物的排放控制效果,提出了水利工程施工过程中的高浓度废水污染物排放控制技术。利用硝基苯模拟水利施工过程中的高浓度废水,分析了NT100活性炭、NT200活性炭和NT300活性炭对硝基苯的吸附穿透曲线,确定了污染物吸附的最佳活性炭类别,通过分析水流速度、温度对穿透曲线的影响,结合吸附平衡实验,实现了废水污染物的排放控制。结果表明,选择NT100活性炭作为最佳吸附剂时,当水流速度为10 mL/min、水温为10℃时,废水污染物的吸附效果最好,而且NT100活性炭吸附硝基苯符合Langmuir方程,提高了废水污染物的排放控制效果。

In order to improve the emission control effect of wastewater pollutants,the high concentration wastewater pollutant emission control technology during the construction of water conservancy projects is proposed.Nitrobenzene is used to simulate the high concentration wastewater in the process of water conservancy construction.The adsorption breakthrough curves of NT100 activated carbon,NT200 activated carbon and NT300 activated carbon for nitrobenzene are analyzed,and the optimal active carbon type for pollutant adsorption is determined.The discharge control of wastewater pollutants is realized by analyzing the impact of water flow speed and temperature on the breakthrough curve,combined with the adsorption balance experiment.The results show that when NT100 activated carbon is selected as the best adsorbent,when the water flow rate is 10 mL/min and the water temperature is 10℃,the adsorption effect of wastewater pollutants is the best.The adsorption of nitrobenzene by NT100 activated carbon conforms to Langmuir equation,which improves the emission control effect of wastewater pollutants.