高COD浓度污水与洁净底泥作用的实验研究

通过底泥吸附和污水有机物降解实验 ,研究了高COD浓度污水与洁净底泥的相互作用。结果表明 ,洁净底泥对高COD浓度污水中的污染物具有吸附作用 ,且在起始段此作用较明显 ,但在后期的作用就下降很多。底泥固相量的增加可显著提高水相有机污染物的吸附去除率 ;但对于不同来源的污水 ,并非按照同一比例增加 ,污水性质显著影响底泥的有机污染物吸附量。污水中的有机污染物的生物降解由于其作用缓慢 ,在开始的阶段 ,对水相有机污染物的减少远没有底泥吸附所起的作用大 ;但在后期其累计的作用将明显显现出来

Experimental Research on Interaction of Sewage with High COD and Clear Bottom Sediment

By adsorption and decomposition experiment,interaction of sewage with high COD and clear bottom sediment was studied.The results show that,clear sediment can adsorb organic contaminant in sewage with high COD,which shows high rate in beginning period,and is much slowly at the end.Removal rate rises with increasing of concentration of sediment particle in water phase,but to sewages from different sources,the removal rate is difference,that is,properties of sewage impact on the adsorption of organic contaminants on sediment.Due to the slow action,the decomposition of organic matter in sewage showed little effect on the decline of COD in water at the beginning period,but after a long time,its action adde up and emerged.