纤维球滤料罐去除废水中污染物的研究

Study on the Effect of Fiber Ball Filter Material Tank on Removing Pollutants from Wastewater

本研究以改性软性滤料为试验对象,通过单一试验探讨不同滤料球径、装填密度以及填层高度对废水中污染物的去除效果,并在单一试验后进行多因素优化试验。研究发现:(1)单因素试验中,当纤维球滤料直径越小时,其去除SS和COD的效果最佳,但直径小的纤维球比直径较大的纤维球更易堵塞;此外当纤维球的装填密度为100 g/L时,过滤效果最好,但在实际应用中装填密度越大处理速度和效率反而降低;而当纤维球的装填高度1000 mm时,其对SS和COD的处理效果最佳,去除率分别为80.1%和27.5%。(2)优化试验中,当纤维球直径为30 mm、装填密度为100 g/L、装填高度为1000 mm时,系统出水的SS和COD去除率最大,分别为85.2%和27.6%。

This study taked modified soft filter material as the experimental object,and explored the removal effect of pollutants in wastewater with different filter material ball diameters,filling densities,and filling layer heights through a single experiment.After a single experiment,a multi factor optimization experiment was conducted.Research had found that:(1)In single factor experiments,the smaller the diameter of the fiber ball filter material,the best removal effect of SS and COD is achieved.However,fiber balls with smaller diameters are more likely to block than fiber balls with larger diameters;In addition,when the filling density of the fiber ball is 100 g/L,the filtration effect is the best,but in practical applications,the higher the filling density,the lower the processing speed and efficiency.When the filling height of the fiber ball is 1000 mm,its treatment effect on SS and COD is the best,with removal rates of 80.1%and 27.5%,respectively.(2)In the optimization experiment,when the diameter of the fiber ball is 30 mm,the filling density is 100 g/L,and the filling height is 1000 mm,the optimal parameters are selected.The removal rates of SS and COD in the effluent of the system are the highest,reaching 85.2%and 27.6%,respectively.